Exhibit D.2.1







SCADA System Description










The VestasOnlineTM Business Solution for consists of the following system components:







1.

Communication and Server System:




VestasOnlineTM Server. The system manages the continuous collection of data from the wind park units. The data collected are stored in a central database and used for operating and managing the wind farm.




1.1 Power Plant Server.

The standard 19” communication rack contains the server hardware with a minimum 15-minutes UPS unit and galvanic isolation for surge protection. 

The communication rack provides the connection between the park units, the VestasOnlineTM Server and the VestasOnlineTM clients using an Ethernet network interface.




1.2 VestasOnlineTM Business Server Hardware.

Server with Intel processor, min. 2Gb RAM, RAID solution with storage capacity of 2 years data to be kept online, DLT – 100/200 GB tape backup, CD burner, network card, keyboard, mouse and 17” monitor.




1.3 The VestasOnlineTM Business Solution. The software on the Power Plant server enables the VestasOnlineTM Business client as the operator's user interface for accessing and processing the collected park unit data and viewing instant data. The client application is operating on a remote system with communication to the server system through a local network connection or remote connection.




1.4 VestasOnlineTM Server Operating System (OS).

Operating system:

Microsoft Windows Server

SCADA system:

VestasOnlineTM Business Server

Database system:

SQL Server

Backup software:

Tape backup software including SQL Server plug-in




1.5 Remote Access.

Vestas needs remote access as described below. 

The access is established through VPN (Virtual Private Network) connection configured by Vestas on the VestasOnlineTM Server system. Vestas needs unrestricted local and remote access to the system during the service period to fulfill the availability covenants on the wind turbines and be able to perform on-line support, maintenance and upgrades of the VestasOnlineTM Server system.

Buyer is responsible for supplying a T1 internet connection line or equivalent terminated in an Ethernet RJ45 interface with one (1) public IP address.




2.

The VestasOnlineTM Business Client.




Two (2) VestasOnlineTM client licenses. 




2.1

VestasOnlineTM Business Client Requirement.




Operating system:

Minimum Microsoft Windows 2000 Professional

Database system:

Microsoft Data Engine (MSDE) for offline use




The minimum hardware requirements for the client PC are as follows:

				
	PC Hardware requirements

	Processor – CPU

	Memory

	Free Hard disk space


	Minimum

	500 MHz

	128 MB RAM

	Min. 80 MB




Note: Personal computer hardware for VestasOnlineTM Business Client licenses is to be delivered by Buyer.




3.

Wind Farm Communication Network.




The network facilitates and enables the communication between the VestasOnline Server system and the park units.




The Fiber optical cable and converters scope:

Supplier 

-

Fiber optic switches installed within the cabinets in each turbine.

-

Terminate and test fibers. Only the number of fibers used in each cable is to be terminated and tested.

Buyer

-

Fiber cable (minimum 4 wire 50/125 mM multi-mode fiber or 9/125 mM single-mode optical cable).

-

Laying of optic fiber cables.

-

Leaving 20 meters of extra cable per cable coming in to the turbine available on top of turbine foundation for installation and termination.




This calculations only includes multi-mode communication. Single-mode communication might be necessary to configure the entire site. The need for single-mode communication will be determined when the final park layout is ready.




1.

Installation, Configuration and Training.

Installation comprises of the start-up and commissioning of the complete VestasOnlineTM Business Solution.




Software training program (on site):

1 day VestasOnlineTM Business Solution training.








  Class 1

  Item no. 958855.R2

  2006-01-17

  VestasOnline Business Solution

  Remote Control & Monitoring

  Hardware Description

  

  

  Vestas Wind Systems A/S

  Alsvej 21

  DK-8900 Randers

  SF# 1107242

  

  

  

      

  

  

  

  Table of Contents

  Page

  1.

  The VestasOnlineTM Business Server .............................................................................3

  1.1

  Server hardware .....................................................................................................3

  1.2

  Client hardware (optional).......................................................................................3

  1.3

  Communication unit for remote access...................................................................3

  1.4

  Network switches.................................................................................................... 4

  1.5

  Drawer for communication loop switches................................................................4

  1.6

  UPS Units ............................................................................................................... 4

  1.7

  UPS Management...................................................................................................4

  1.8

  Tape Backup solution (optional)..............................................................................4

  1.9

  Air circulation and filtering.......................................................................................5

  1.10

  Air cooling unit (optional) ........................................................................................ 5

  1.11

  Hardware specifications.......................................................................................... 5

  1.11.1

  Server features...........................................................................................5

  1.11.2

  Communication unit features...................................................................... 6

  1.11.3

  Network switches .......................................................................................6

  1.11.4

  Drawers for fibre optical loops....................................................................6

  1.11.5

  UPS units ...................................................................................................6

  1.11.6

  UPS management units .............................................................................7

  1.11.7

  Tape Backup Unit – features...................................................................... 7

  1.11.8

  Air circulation and filtering ..........................................................................7

  1.11.9

  Air cooling unit (optional)............................................................................7

  1.11.10

  19’’ rack cabinet – physical dimensions...................................................8

  1.11.11

  Environmental requirements....................................................................8

  1.11.12

  Power supply requirements.....................................................................8

  1.11.13

  Client PC requirements ...........................................................................8

  2.

  Terminology and Acronyms.............................................................................................9

  The information contained in this document is provided for informational purposes only, and may be out of date or include omissions,

  inaccuracies or other errors. The document is provided AS IS without warranty or commitment of any kind, express or implied.

  At any time, the information contained herein may be subject to change without notice.

  References in this document to products or product capabilities do not imply that they will be available in all Vestas systems or product

  configurations. Nothing contained in this document is intended to, nor shall have the effect of, creating a commitment that may replace

  or alter any terms or conditions in written agreements with Vestas Wind Systems A/S.

  

  

  

  

  

      

  

  1.

  The VestasOnlineTM Business Server

  The VestasOnlineTM Business Server system for

  control and monitoring of wind power plants is

  based on a standard 19” rack cabinet.

  The 19” rack cabinet houses seven units:

  -

  a server with monitor and keyboard

  -

  a communication unit for remote access

  -

  two network switches (redundant)

  -

  a retractable drawer for communication loop

  switches

  -

  a UPS management unit

  -

  two UPS units with surge protection

  (redundant)

  -

  air-cooling and filtering unit (optional)

  1.1 Server hardware

  The server hardware is based on a Hewlett-Packard industry server that is designed for pro-

  fessional applications with focus on high availability and reliability. The server is equipped

  with a flat-panel monitor and keyboard for system administration purposes.

  The server hardware is offered with 3 years onsite warranty for most countries.

  The server is installed with the newest edition of the VestasOnlineTM Business Server soft-

  ware. It provides online communication with wind turbines, the VestasMetPanel meteorologi-

  cal station, the VestasGridPanel grid measurement station, the Power Plant Controller plus

  any optional equipment and collects all relevant data in a database on the server.

  1.2

  Client hardware (optional)

  The client hardware is a 1U (one-unit) 19’’ rack PC built into the rack. The PC uses the same

  keyboard and monitor as the server. The toggling between server and client is handled by

  pressing specific keys on the keyboard. The client PC is installed with latest version of the

  VestasOnlineTM Business Client software.

  1.3

  Communication unit for remote access

  The 19’’ communication unit is based on a Cisco Catalyst 2801 unit with built-in ADSL/VPN

  communication. Two communication slots can be fitted with modules for PSTN and ISDN

  communication. The communication unit is network based. All analogue phone lines are con-

  nected to external wiring through transient protection mounted in the back of the server rack.

  

  

  1.4 Network switches

  The 19’’ network switches are based on the Cisco Catalyst 2950 switch and each of the two

  switches has 24 ports available for network connections. The network communication is re-

  dundant meaning that each of the network switches is connected via network cables to the

  server and all loop switches. In addition to the communication redundancy, the switches are

  powered from different UPS units.

  1.5

  Drawer for communication loop switches

  The communication loop drawer connects all necessary communication loops for the power

  plant infrastructure. Typically one loop/fibre converter is used per electrical feeder in the

  plant, but communication loops for other equipment e.g. inside the substation can also be

  mounted here. The communication units can be rail switches supplied by Moxa or Hirsch-

  mann or it can be CSL fibre converters used for serial networks. Using Moxa or Hirschmann

  switches, each rail switch is connected to both network switches and UPS units to provide

  maximum reliability and availability.

  1.6

  UPS Units

  The UPS unit - MGE Pulsar Extreme 1500 - is designed to protect the server against grid

  drops and will deliver safe power for at least 30 minutes (2 x 1500VA). A surge protector for

  protecting the system against high power transients and currents generated from lightning is

  built into the UPS units.

  

  

  Furthermore, the UPS unit controls the power supply to the rack hardware with only one po-

  wer inlet (e.g. the communication unit for remote access). The UPS controller switches the

  power supply from one UPS to another instantaneously ensuring uninterrupted power to the

  hardware units.

  1.7

  UPS Management

  The UPS Management unit – MGE Multislot – is used for monitoring status signals from the

  UPS units and is monitored by the VestasOnlineTM Business Server through a SNMP inter-

  face. In case a grid drop exceeds the UPS time (30 minutes), the VestasOnlineTM Business

  Server will shut down itself automatically. When the grid has returned and is stabilized, the

  UPS automatically restarts the VestasOnlineTM Business Server.

  An additional environmental sensor unit is attached to the UPS Management unit. This sen-

  sor unit is used for monitoring temperature and humidity inside the VestasOnline TM Server

  rack.

  1.8

  Tape Backup solution (optional)

  Optionally, the VestasOnlineTM Business Server can be equipped with a HP Ultrium 215

  LTO-1 tape drive that is capable of storing up to 200 GB of compressed data on a single

  tape.  The tape backup solution also includes Veritas Backup Exec backup software for

  scheduled backup.

  1.9

  Air circulation and filtering

  The standard 19’’ rack is designed with air circulation to improve cooling. Six fans mounted at

  the top of the rack provide a continuous airflow through the cabinet. The air intake is located

  at the base of the rack through a removable filter tray and the air outlet is mounted at the top

  of the rack next to the ventilation fans.

  The IP class of the rack for this solution is IP 54. If the requirements call for air condition to

  keep the rack hardware within the environmental specifications, the server rack can be or-

  dered with an optional air-cooling unit (see below).

  Please note that air-cooling option cannot be refitted after assembling the

  standard rack!

  1.10

  Air cooling unit (optional)

  The server rack can be supplied with a cooling unit mounted on the rear side of the rack

  panel providing a closed circuit of air inside the rack. The air-cooling unit is maintenance-free

  without any filter or the like. An effective cooling capacity of 820W secures a rack tempera-

  ture of 20-25°C even if the server room temperature rises to 40°C. The IP class of the rack

  for this solution is IP 54.

  1.11 Hardware specifications

  1.11.1 Server features

  •

  Standard 2U 19” rack cabinet

  Intel®Pentium Xeon, min. 3 GHz processor

  (optional dual processor)

  •

  2 GB RAM (optional 4GB)

  •

  4 x 73 GB SCSI hot swappable hard disks

  •

  Dual power supply

  •

  Dual network card

  •

  CD-RW/DVD-ROM drive

  (optional tape backup drive LTO 100/200GB)

  •

  17” LCD Flat-panel monitor,

  keyboard and mouse = 8U

  •

  Power operating area: 100-240VAC / 50-60Hz

  1.11.2

  Communication unit features

  •

  Cisco Catalyst 2801

  •

  Standard 1U 19” rack cabinet

  •

  ADSL/VPN for 1 digital line (built-in)

  •

  2 communication slots available

  Maximum 2 optional card types may be

  selected from the below list:

  o

  PSTN card for 2 analogue lines

  o

  ISDN card for 1 digital line

  •

  Power operating area: 100-240VAC / 50-60Hz.

  1.11.3 Network switches

  •

  2 X Cisco Catalyst 2950 – each with 24 ports

  •

  2 X standard 1U 19” rack cabinet

  •

  Power operating area: 100-240VAC / 50-

  60Hz

  •

  Supports industry standards for network re-

  dundancy

  1.11.4

  Drawers for fibre optical loops

  •

  2 X standard 3U 19” rack drawers.

  Can be fitted with following loops:

  o

  Moxa single- and multi-mode

  o

  Hirschmann single- and multi-mode

  o

  CSL single- and multi-mode

  •

  Maximum number of communication loops is de-

  pendent on the type of switch:

  o

  Moxa: 14 loops

  o

  Hirschmann: 15 loops

  o

  CSL: 6 loops

  1.11.5 UPS units

  •

  2 X MGE Pulsar Extreme 1500

  •

  Standard 2U 19” rack cabinet

  •

  2 x 1500VA Capacity

  •

  AC Power: 115VAC / 60Hz or 230VAC / 50Hz

  1.11.6

  UPS management units

  •

  1 X MGE Multislot

  •

  Standard 1U 19” rack cabinet

  •

  MGM STS

  •

  MGM Metaframe

  1.11.7

  Tape Backup unit (optional)

  •

  1 X Ultrium 215 LTO-1 tape drive 100/200 GB

  •

  Includes Veritas Backup EXEC + SQL plug-in

  for scheduled backup

  •

  Standard 1U 19” rack cabinet

  1.11.8

  Air circulation and filtering

  •

  Six fans for air circulation through the rack

  mounted in the top of the rack.

  •

  Replaceable air filter located in a 19’’ unit

  module for easy access.

  The filter module is located in the base of the

  rack.

  1.11.9

  Air cooling unit (optional)

  •

  CFC-Free refrigerant R134a

  •

  Temperature control: micro controller

  •

  IP class:

  IP54

  •

  Re-circulation of air in server cabinet

  •

  Noise: 65db (1 meter - max output)

  •

  230V/50Hz:

  •

  Nominal current: 2.8A

  •

  Start current (max.): 12.7A

  •

  115V/60Hz:

  •

  Nominal current: 5.6A

  •

  Start current (max.): 25.4A

  

  

  

      

  

  1.11.10  19’’ rack cabinet – physical dimensions

  Server rack without air-cooling option:

  •

  H:

  1740 mm  (68.5 inches)  = 32 U

  W:

  600 mm  (23.6 inches)

  D:

  900 mm  (35.4 inches)

  •

  Weight:  280 kilo  (617 lbs) (fully configured rack)

  •

  IP class

  IP54

  •

  External wiring is entering the panel through the rack floor.

  Server rack mounted with air-cooling option:

  •

  H:

  1740 mm  (68.5 inches) = 32 U

  W:

  600 mm  (23.6 inches)

  D:

  1040 mm  (40.9 inches)

  •

  Weight: 330 kilo (728 lbs) (fully configured rack)

  •

  IP class

  IP54

  •

  External wiring is entering the panel through the rack floor.

  1.11.11 Environmental requirements

  •

  Temperatures

  5oC

  Æ

  30oC  (20oC recommended)

  •

  Humidity

  10%

  Æ

  80%

  Server rack mounted with air-cooling option:

  •

  Temperatures

  5oC

  Æ

  40oC  (20oC recommended)

  •

  Humidity

  10%

  Æ

  80%

  1.11.12  Power supply requirements

  Server rack without air-conditioning option:

  Supply voltage:

  2 X 100 -110VAC

  Æ

  20A

  2 X 230 VAC

  Æ

  13A

  Nominal frequency range:

  47 to 63 Hz

  Server rack mounted with air-conditioning option:

  Supply voltage:

  3 X 100-110VAC

  Æ

  20A

  3 X 230 VAC

  Æ

  13A

  Nominal frequency range:

  47 to 63 Hz

  1.11.13  Client PC requirements

  Minimum system requirements for the client PC:

  •

  1 GHz processor

  •

  128 MB Ram

  •

  50 Mb free disk space

  •

  Microsoft Windows 2000 or higher

  

  

  

      

  

  2. Terminology and Acronyms

  Term

  Description

  ADSL

  Asymmetric Digital Subscriber Line - a technology for transmitting digital in-

  formation at a high bandwidth on existing phone lines to homes and busi-

  nesses

  FWA

  Fixed Wireless Access - a wireless system in which office or home users

  directly connect with the switching center of the telecommunications carrier

  or the interchange channel to use the system

  ISDN

  Integrated Services Digital Network - a set of standards for digital transmis-

  sion over ordinary telephone copper wire as well as over other media

  ISP

  Internet Service Provider - a company that provides access to the Internet

  Object Linking and Embedding - is Microsoft's framework for a compound

  OLE

  document technology.

  OPC

  OLE for Process Control - OPC is open connectivity in industrial automa-

  tion and the enterprise systems that support industry. Interoperability is as-

  sured through the creation and maintenance of open standards specifica-

  tions

  PSTN

  Public Switched Telephone Network - is the world's collection of intercon-

  nected voice-oriented public telephone networks, both commercial and

  government-owned

  SCADA

  Supervision Control And Data Acquisition - the gathering of data from re-

  mote locations in order to control equipment and conditions

  SNMP

  Simple Network Management Protocol - is the protocol governing network

  management and the monitoring of network devices and their functions

  SQL

  Standard Query Language - is a standard interactive and programming lan-

  guage for getting information from and updating a database

  UPS

  Uninterruptible Power System

  VPN

  Virtual Private Network - is a way to use the Internet to provide secure ac-

  cess to remote offices or the like

  

      

  




  Item no. 958079.R2

  2006-04-05

  VestasOnlineTM Business

  Remote Control & Monitoring

  Software Description

  WWW.VESTAS.COM

  Vestas Wind Systems A/S

  38B

  Alsvej 21

  DK-8900 Randers

  SF# 1107244

  

  

  

      

  

                  

  MG&E Turbine Supply Agreement, Exhibit D.2.3

  Item no.: 958079.R2

  VestasOnlineTM Business

  Date:

  200

  6-04-

  05

  Class:

  I

  Software Description

  Issued by: Technology

  Type:

  MAN

  Table of Contents..............................................................Page

  1.

  Introduction...................................................................................................................... 3

  2.

  VestasOnlineTM Business configuration ..........................................................................3

  2.1

  VestasOnlineTM Business key features...................................................................3

  2.2

  Wind turbine range..................................................................................................4

  3.

  VestasOnlineTM Business package .................................................................................4

  3.1

  Online data monitoring............................................................................................ 4

  3.1.1

  Graphical Overview...................................................................................... 4

  3.1.2

  Plant Unit Overview...................................................................................... 5

  3.1.3

  Customized Overviews.................................................................................5

  3.1.4

  Plant Summary Overview.............................................................................5

  3.1.5

  Trend Curves................................................................................................ 5

  3.2

  Wind turbine control................................................................................................ 6

  3.2.1

  Turbine Start, Pause, Stop and Reset..........................................................6

  3.2.2

  Group Start, Stop and Reset ........................................................................6

  3.3

  Reporting ................................................................................................................ 6

  3.3.1

  Standard reports...........................................................................................6

  3.3.2

  Historical logs............................................................................................... 8

  3.3.3

  Report Generator Module...........................................................................10

  3.3.4

  Data Export (Optional)................................................................................12

  3.4

  Additional Features...............................................................................................12

  3.4.1

  OPC Interface.............................................................................................12

  3.4.2

  Notes..........................................................................................................12

  3.4.3

  Messenger..................................................................................................12

  3.4.4

  Acknowledgement of Alarms and Warnings...............................................12

  The information contained in this document is provided for informational purposes only, and may be out of date or include omissions,

  inaccuracies or other errors. The document is provided AS IS without warranty or commitment of any kind, express or implied.

  At any time, the information contained herein may be subject to change without notice.

  References in this document to products or product capabilities do not imply that they will be available in all Vestas systems or product

  configurations. Nothing contained in this document is intended to, nor shall have the effect of, creating a commitment that may replace

  or alter any terms or conditions in written agreements with Vestas Wind Systems A/S.

  

  

  1.

  Introduction

  This document provides an introduction to the VestasOnlineTM Business SCADA

  (Supervisory Control And Data Acquisition) system for control and monitoring of wind

  power plant.

  2.

  VestasOnlineTM Business configuration

  VestasOnlineTM Business Client. The VestasOnlineTM Business client is the operator's user

  interface for viewing instant data as well as accessing and processing the collected data from

  all units in the wind power plant as well as for viewing instantaneous data from the units. The

  client application is operating with the communication system through a local network, a wide

  area network, or a dial-in connection.

  VestasOnlineTM Business Server. The VestasOnlineTM Business server manages the con-

  tinuous collection of data from the units in the wind power plant. The collected data are

  stored in a central database and used for operating and managing the wind power plant.

  Wind Power Plant communication network. The network manages and executes the

  communication between the communication system and the units in the wind power plant.

  2.1

  VestasOnlineTM Business key features

  Control and monitoring of wind turbine generators, meteorology and grid stations

   

  Plant summary - textual and graphical presentations

   

  Presentation of online data from any turbine, e.g. status, power, wind speed,

   

  voltages, current, temperatures and alarms

  Actual active and reactive power control for the complete wind power plant

   

  Advanced power curve presentations including power curves, scatter curves,

   

  reference and wind distribution curves from multiple units

  Availability calculations

   

  Wind and energy rose graphical presentations

   

  Productivity presentations

   

  Presentation of collected 10-minute data. The 10-minute data include mean values,

   

  standard deviations and minimum and maximum values during the averaging period.

  Alarm and event logs for wind power plant, wind turbines and meteorology stations

   

  User-friendly graphical user interface based on Windows standards

   

  Client connection manager concept for multiple power plant access

   

  Personal security login and access profile

   

  Remote control of a single wind turbine or a group of wind turbines:

   

  - Start, Pause, Stop, Yawing and Reset of turbines (where applicable)

  Comprehensive Report Generator Module

   

  2.2

  Wind turbine range

  The VestasOnlineTM Business solution is available for all wind turbines with a TAC, a TAC II,

  a 5000.02 or a 6000 series controller:

  V52

   

  V66

   

  V80

   

  V82-1.65 MW

   

  V90

   

  All wind turbines in the NM series

   

  3.

  VestasOnlineTM Business package

  The VestasOnlineTM Business package consists of a variety of modules.

  The software components can be categorized into three groups:

   

  Online data monitoring

   

  Wind turbine control

   

  Reporting

  3.1

  Online data monitoring

  The software modules focusing on instantaneous value monitoring are:

  3.1.1 Graphical Overview

  The graphical overview module is designed as a geographical layout to provide an online

  overview of the entire wind power plant. The wind power plant unit icons are all placed on top

  of a bitmap image of the site with roads, electrical infrastructure and geographical character-

  istics.

  The module uses colour-coded icons for the individual wind power plant units such as tur-

  bines, meteorology stations and grid monitoring computers. The colour of the units of the in-

  dividual units will change to reflect the current status. For example when a turbine is braked,

  it will appear red; when it is producing power it will indicate the actual output in relation to the

  nominal production by varying a green production bar; when the turbine is running with a

  warning the colour turns to blue and finally if the VestasOnlineTM Server has lost communica-

  tion to a given unit, the colour of this unit turns yellow.

  A separate window - the Plant Notification pane – collects and displays all alarms and other

  events on all units. Additionally, incoming alarms can be announced by sound, synthetic

  speech or hardware devices. The information in the Plant Notification window enables the

  operator to decide whether an alarm or event requires intervention or not. An Acknowledge

  function informs other operators not to take action in a situation that is being addressed al-

  ready. Alternatively, the Plant Notification pane can be positioned on a second monitor for

  better overview.

  3.1.2

  Plant Unit Overview

  All icons - wind turbine, meteorology station, grid measuring station and substation com-

  puters - on the graphical overview can be selected by using the cursor. Right-clicking an icon

  brings up a dedicated menu for the unit in question.

  For each wind turbine, detailed online information is available:

  Operating status

   

  Temperatures throughout the turbine

   

  Production counters

   

  Detailed grid data

   

  For each meteorology station, information about wind speed, wind direction, pressure and

  ambient temperature is available.

  Information about voltages, currents, active production, reactive production, power factor and

  much more is available for each grid computer.

  3.1.3 Customized Overviews

  In addition to the standard mimics/screens provided with the wind turbine, meteorology

  station and grid measuring computer, it is possible to configure project-specific icons with as-

  sociated mimics. The mimics could be designed to provide overview of substations, breakers,

  other relevant I/O status, customer dispatch screens and much more. Also, the mimics can

  be designed with command buttons, bitmaps, trends and user security.

  Please note that all project-specific mimics are optional.

  3.1.4 Plant Summary Overview

  Based on online values retrieved from the wind turbines, the Plant Summary provides a

  highly detailed and dynamic overview of the entire wind power plant. The collected data is

  presented in a table format where each column presents one set of predefined information

  and each row represents a turbine in the wind power plant.

  As standard a number of table templates are provided but it is very easy for users to design

  their own information templates with data from more than a 100 potential columns.

  3.1.5 Trend Curves

  The Trend Curve module offers trending of a large number of different turbine online data

  sets such as wind speed, production etc. The user-defined trending setups can furthermore

  be saved as templates. The trend curves are provided with relevant scaling for the individual

  data presented.

  3.2

  Wind turbine control

  The software features focusing on wind turbine controls are:

  3.2.1

  Turbine Start, Pause, Stop and Reset

  By selecting a turbine icon and right clicking, it is possible to send a Stop, Pause, Start or

  Reset command to the turbine. Furthermore, it is possible to make the turbine nacelle yaw in

  both clockwise and counter-clockwise direction. Only users with appropriate access rights

  can send such commands. Also, the operator must acknowledge the command by entering a

  confirmation.

  3.2.2 Group Start, Stop and Reset

  The Group control module enables the operator to predefine up to 10 turbine groups that can

  be started, stopped or reset simultaneously or with a user-defined delay between the execu-

  tion of the command on the wind turbines in the group.

  3.3 Reporting

  The software modules focusing on reporting are:

  3.3.1 Standard reports

  3.3.1.1

  Power curve module

  The power curve module provides the ability to plot power curves for individual wind turbines

  or groups of wind turbines. The module offers numerous adjustable parameters allowing tar-

  geted user analysis of data. The power curve calculations are based on a 10-minute data

  resolution.

  3.3.1.2 Curve types

  It is possible to generate scatter plots and traditional power curves - both combined with in-

  formation on the given wind distribution and compared to the guaranteed power curve. Fur-

  thermore, scatter plots and power curves can be generated based on maximum and/or mini-

  mum production in the relevant period. Rainy and icy periods can be excluded when the rele-

  vant sensors are available through a VestasOnlineTM meteorology station - VMET.

  3.3.1.3 Wind speeds

  The turbine anemometer(s) can be used for the wind speed measurements as well as the

  anemometers on the meteorology station. Also a calculated free wind speed based on the

  turbine’s anemometer combined with a 6

  th

  order polynomial is available.

  For the meteorology station anemometer wind speeds it is possible to exclude a user-defined

  wind sector to get even more detailed power curves. All power curves can be air density cor-

  rected using information from the meteorology stations to make them comparable with the

  guaranteed power curve.

  

  

  3.3.1.4

  Wind/ Energy rose

  The Wind and Energy rose module provides the operator with tools for calculation of the pre-

  vailing wind direction and furthermore to determine the direction of the energy-intensive

  winds. The module offers the possibility to make wind and energy roses for both wind tur-

  bines and meteorology stations.

  3.3.1.5

  Collected Data Viewer

  The Collected Data Viewer module handles the large amount of data from month counters

  and 10-minute data collected from the wind turbines, the meteorology stations and the grid

  computers in the wind power plant. (If available, the Collected Data Viewer also handles any

  high-resolution data from substations)  The values can be retrieved from the database and

  displayed online in a table format or as a graphical presentation. If some of the values require

  further processing, these values can be saved directly to an Excel spreadsheet or saved as a

  Text-file. Like any other VestasOnlineTM Business module, the Collected Data Viewer is

  highly integrated towards the Microsoft environment which means that features like

  copy/paste work across the applications.

  For each wind turbine more than 300 values are stored in the central database every 10 min-

  utes. These turbine values are grouped in the following categories:

  Grid data

   

  Meteorological data

   

  Status data

   

  Counters

   

  Temperatures

   

  The data points are, if relevant, collected as a minimum, a maximum, an average and vari-

  ance or standard deviation value for each 10-minute period.

  For each meteorology station more than 40 values are stored in the central database every

  10 minutes. The amount of data collected depends on the instrumentation of the computer.

  The meteorology station values are grouped in these categories:

  Wind direction

   

  Wind Speed

   

  Pressure

   

  Ambient temperature

   

  Humidity

   

  Rain detection

   

  Precipitation (Optional)

   

  The data points are, if relevant, collected as minimum, a maximum, an average and a vari-

  ance value for each 10-minute period.

  

  

  For each VestasOnlineTM Grid Measuring Station (VestasGridPanel) more than 100 values

  are stored in the central database every 10 minutes. The grid station values are grouped in

  following categories:

   

  Voltage

   

  Current

   

  Frequency

   

  Power factor

   

  KW (Active power)

   

  KVAr (Reactive power)

   

  KVA (Apparent power)

  The data points are all measured per phase and collected as a minimum, a maximum, an av-

  erage and a sample rate value for each 10-minute period. Furthermore, all production char-

  acteristics are collected as accumulated counters that are collected every 10 minutes.

  3.3.2 Historical logs

  3.3.2.1 Plant log

  All events from the individual wind turbines are recorded in the Plant log module. It is possi-

  ble to select individual wind turbines or groups of wind turbines for reporting purposes. In ad-

  dition to the wind turbine events, the Plant log also holds detailed information about users

  who have logged on to the system including their access level, software version and dongle

  number.

  Furthermore, information about server activities such as UPS alarms, server shutdown etc. is

  also available in the Plant log.

  If substation equipment such as breakers etc. has been integrated into the SCADA system,

  these alarms and events will be available in the Plant log as well.

  3.3.2.2 Statistical log

  The Statistical log module records all events statistics from the individual wind turbines. It is

  possible to select individual wind turbines or groups of wind turbines for reporting purposes.

  The Statistical log presents for each turbine event code:

  Number of occurrences

   

  Total event time

   

  MTBF (Mean Time Between Failure)

   

  3.3.2.3 Turbine logs

  Each wind turbine controller stores a number of event logs. The main purpose of these logs

  is to help operators or service crews to execute efficient troubleshooting at the turbine or from

  a remote location.

  VMP 5000 / 6000 Controller (Vestas wind turbine range)

  On the VMP 5000.02 / 6000 controller series, the Turbine log entries are organized into

  four categories – each category holds up to 700 entries:

  Turbine Alarm log

  Holds information about situations that have caused the wind turbine to stop normal op-

  eration and go from the Run state into either the Pause, Stop, or Emergency Stop state.

  Warning log

  Holds information about possible error situations or other irregularities that require atten-

  tion but do not cause an immediate stop of the wind turbine.

  System log

  Holds information about changes in the set-up of the wind turbine such as user log-

  on/log-off, and the like.

  Operation log

  Holds information of informative nature about the condition of the wind turbine – for ex-

  ample changes in the blade pitch angle, change in the wind direction, change in the

  number of generator revolutions, and the like.

  TAC II Controller (previous NEG-Micon turbine range)

  Turbine Alarm log

  The Turbine Alarm log holds 100 alarms. The log is a circular buffer, which means that it

  always holds the last 100 events. With each alarm event, a snapshot of 75 relevant tur-

  bines key parameters such as production data, wind speeds, grid information tempera-

  tures is also stored for troubleshooting purposes.

  Turbines Statistical log

  The Turbines Statistical log records all event statistics from the wind turbines from day

  one of operation.

  The Turbine Statistical log presents for each wind turbine event code:

  Number of occurrences

   

  Total event time

   

  MTBF (Mean Time Between Failure)

   

  Turbine Power Down log

  The Turbine Power Down log records the events when the turbine controller has lost its

  power (for example in case of a grid outage). The log holds the last 10 events.

  3.3.3 Report Generator Module

  The Report Generator Module is used to extract efficiency calculations, actual production,

  expected production, event reports and many other types of information. The module con-

  sists of 5 individual modules all targeted at different users of the system.

  The modules can be categorized as follows:

   

  Report Archive. For everyone who has access to generated reports

   

  Report Generator. For everyone who has access to generate new reports

   

  Template Designer. (Optional). For on-site operators who need to design new report-

  ing templates. The Template designer offers more than 100 reporting columns.

   

  Shadow Data Editor. (Optional). For on-site operators who are responsible for down-

  time allocation and system database integrity.

   

  Profile Administrator. (Partly optional). For the administrator who is responsible for

  the configuration of the system. This includes turbine event-list allocations, guaranteed

  power curve, raw data validation parameters, user access levels etc.

  3.3.3.1 Report Archive

  The Report Archive holds all reports that have been saved. The saved reports are only avail-

  able (visible) to the user if he or she has explicit access right to the reporting template in

  question. In the archive reports can be added, removed and re-generated.

  3.3.3.2 Report Generator

  Three types of reports are available in the Report Generator. All the reports are generated

  based on the collected 10-minute data from the wind turbines, meteorology stations and grid

  monitoring computers.

  Standard reports

  The Standard reports are based on predefined reporting templates. It is possible to

  choose one single wind turbine or groups of turbines for the individual report. The stan-

  dard reporting periods are day, month and year, but the user can choose any desired

  time interval.

  Historical reports

  The Historical reports are generated on predefined reporting templates. Historical reports

  are generated for single values (e.g. availability or power curve efficiency). The user

  chooses the value and specifies a time period and a resolution (for example one week

  with a 1-day resolution), and the resulting report will present for the wanted value on a

  daily basis for the given week.

  You can choose one single wind turbine or groups of turbines for the individual report.

  

  

  Event reports

  The Event reports are generated on basis of the recorded event codes in the turbines. It

  is possible to choose one single wind turbine or groups of turbines for the individual re-

  ports. The standard reporting periods are Day, Month and Year, but the user can choose

  any desired time interval. It is possible to display the availability allocation category with

  manual added comments if these exist.

  3.3.3.3

  Template Designer (Optional)

  The Template Designer provides the user with functionality for designing specific reports

  based on more than 100 reporting columns. In the user-designed report templates headlines

  can changes; result values formatted and min/max added to the calculations in the columns.

  Examples of available report columns are:

   

  Availability (e.g. manufacturer, owner and environmental)

   

  Power curve efficiencies, load factor

   

  Temperatures - maximum, minimum and average

   

  Actual production, expected production, lost production

   

  Grid data

   

  Accumulated counters (e.g. phase comp. steps engaged, generator cut-in)

   

  Timers (e.g. service hours, hours connected to grid)

   

  Wind speed, wind gusts

  3.3.3.4

  Shadow Data Editor (Optional)

  To ensure full data integrity for generated reports, the Shadow Data Editor lets users fill-in

  gaps in the database by manually adding data. This situation may occur if a wind turbine for

  some reason is without power and no data can be retrieved from the turbine. In such a situa-

  tion the operator must add information to the database by allocating the downtime into the

  relevant category (e.g. owner or manufacture). Other events that could need manual atten-

  tion are for example when the service key has been used. By default the service downtime

  goes against the manufacturer but in case the owner who actually is responsible for the

  downtime, the categorization must be changed in favour of the manufacturer.

  These issues are handled by the Shadow Data Editor:

   

  Database integrity procedures

   

  Manual downtime allocation

   

  Comments added to downtime allocations

   

  Lost data handling

  3.3.3.5 Profile Administrator (Partly optional)

  The Profile Administrator is used for configuration purposes by administrators or power

  users.

  This list includes the main features in the module:

   

  Contractual power curve setup (Optional)

   

  Contractual availability setup (Optional)

   

  System access administration

   

  Report template access setup (Optional)

   

  Parameter validation setup

  3.3.4 Data Export (Optional)

  The Data Export function enables recurrent export of data from units in the wind power plant

  at scheduled time intervals (hour/day/week/month/year).

  The actual export of data is an automated process that does not require any operator inter-

  vention once the operator has linked a template to a data export job. Each data export job

  can be linked to multiple templates.

  The data available for the Data Export function is:

  ƒ

  10-minute data templates created in the Collected Data Viewer (”raw” data)

  ƒ

  Templates created in the Template Designer  (processed data)

  The data export job specifies:

  ƒ

  Media type for the transfer of the data (email or FTP)

  ƒ

  Scheduling of the data export process

  The template specifies:

  ƒ

  Unit(s)

  ƒ

  Signals

  Available output formats are:

  ƒ

  CSV file

  ƒ

  CSV file including column names

  ƒ

  CSV file including coldef data

  ƒ

  PDF

  Note: The Data Export function requires a permanent Internet connection.

  3.4 Additional Features

  3.4.1 OPC Interface

  The OPC Interface supports integration of 3

  rd

  party products that are OPC compatible.

  3.4.2 Notes

  The Notes function lets operators add written comments about units in the wind power plant

  in the form of “sticky notes” that appears next to the turbine icon. The main purpose of this

  feature is to allow operators or service personnel to share information with colleagues – for

  example warning other operators not to restart the turbine due to an error and that service al-

  ready is on its way.

  3.4.3 Messenger

  Enables real-time communication with other users on the VestasOnlineTM Business system.

  3.4.4

  Acknowledgement of Alarms and Warnings

  This feature enables remote acknowledgement of alarms and warnings on wind turbines

  equipped with a 5000.02 or 6000 series controller.