CIGRE Study Committee B4
PROPOSAL FOR THE CREATION OF A NEW WORKING GROUP

JWG 1N° B4.82/IEEE

Name of Convenor: Garth Irwin (Canada)
E-mail address: gdi@electranix.com

Technical Issues #2: 8

Strategic Directions #3: 1

The WG applies to distribution networks4: Yes
Potential Benefit of WG work #5: 4
Title of the Group: Guidelines for Use of Real-Code in EMT Models for HVDC, FACTS
and Inverter based generators in Power Systems Analysis
Scope, deliverables and proposed time schedule of the WG:
Background:
Modelling for HVDC, FACTS, wind turbines, solar generators and other power systemequipment that connect to the AC grid through often used generic inverters lack accuracy intransient stability and electromagnetic transients. There is no guarantee that generic basedmodels are valid under a wide range of system conditions – perhaps only tested for predefined small steady state steps/disturbances.
The problem is becoming more important as so many new power electronics equipment are
being installed in the power systems. As there is a technical gap between the manufacturersof these devices (who wrote the code, and are the only ones who truly know what is goingon inside of the models) and the end-user/utility (who is responsible to perform engineeringand operational studies make sure it plays nice with the grid), some guidelines to provide
standard procedures become necessary. Although represents an increasingly huge amountof work for everyone (developers, program developers, utilities etc.) to keep track of all ofthese models – there is no other option besides establishing rules to prevent potential
serious issues in the grid.
Due to this increase use of fast acting power electronic controllers, combining with the factthat wind and solar sources do not contribute to system inertia there is a huge demand formore accurate simulations of controls and protection, and accountability/enforcement toensure expected good actual performances.
Software technology allows possibilities to interface "real-code" controls and protection for
inverters (Wind, PV – Photovoltaic Cells, BESS – Battery Energy Storage Systems, HVDC,
SVC – Static VAR compensator, STATCOM etc.) as opposed to models using building
blocks or the use of generic models in EMT programs, either by real-time simulations (online) as well as off-line commercially available software at almost real-time runs. Thisinvolves the use of executable versions of code to be released by a manufacturer, thus
avoiding full disclosure of sensitive proprietary intellectual property.
Scope:The scope of this Joint Task Force covers the following:
1. To specify what parameters should be considered when asking accurate models for
EMT simulations of inverter based equipment such as Wind generators, PV, BESS,HVDC, SVC, STATCOM etc from their manufacturers
2. Demonstrate the difference (and need) between using a generic models vs RealWG form 2019-V6

code (OEM) as they impact the results. Provide guidance on the implications ofthese results to asset owners, utilities and other stakeholders. Provide guidance on
best approaches in using generic models in the complete absence of OEM provided
model codes. What offline checks/tests can be performed to maximize confidence
levels with the given OEM models or in their absence, with the generic models.
Provide typical benchmark circuit or advice on how to form one.
Deliverables:
Technical Brochure and Executive Summary in ElectraElectra Report
Tutorial6Webinar6
Time Schedule: start: September 2019

Final Report: April 2023

Approval by CIGRE Technical Council Chair:
Date: February 28th, 2019
Approval by IEEE Technical Committee Chair:
Date:
Notes: 1 Working Group (WG) or Joint WG (JWG), 2 See attached Table 1, 3See attached
Table 2, 4 Delete as appropriate, 5 See attached Table 3,6
Presentation of the work done by the WG

WG form 2019-V6

Table 1: Technical Issues for creation of a new WG
12345Active Distribution Networks resulting in bidirectional power and data flows within
distribution levels up to higher voltage networks
Digitalization of the Electric Power Units (EPU): Real-time data acquisition includes
advanced metering, processing large data sets (Big Data), emerging technologies
such as Internet of Things (IoT), 3D, virtual and augmented reality, secure andefficient telecommunication network
The growth of direct current (DC) and power electronics (PE) at all voltage levels
and its impact on power quality, system control, system operation, systemsecurity, and standardisation
The need for the development and significant installation of energy storage
systems, and electric transportation, considering the impact they can have on thepower system development, operation and performance
New concepts for system operation, control and planning to take account of active
customer interactions, and different generation types, and new technology
solutions for active and reactive power flow control

6

New concepts for protection to respond to the developing grid and different
generation characteristics

7

New concepts in all aspects of power systems to take into account increasing
environmental constraints and to address relevant sustainable development goals.

8910

New tools for system technical performance assessment, because of newCustomer, Generator and Network characteristics
Increase of right of way capacity through the use of overhead, underground andsubmarine infrastructure, and its consequence on the technical performance andreliability of the network
An increasing need for keeping Stakeholders and Regulators aware of the technicaland commercial consequences and keeping them engaged during the developmentof their future network

Table 2: Strategic directions of the Technical Council
1

The electrical power system of the future: respond to speed of changes in theindustry

2

Making the best use of the existing systems

3

Focus on the environment and sustainability

4

Preparation of material readable for non-technical audience

Table 3: Potential benefit of work
1

Commercial, business, social and economic benefits for industry or the community
can be identified as a direct result of this work

2

Existing or future high interest in the work from a wide range of stakeholders

3Work is likely to contribute to new or revised industry standards or with other longterm interest for the Electric Power Industry

4

State-of-the-art or innovative solutions or new technical directions

5

Guide or survey related to existing techniques; or an update on past work or
previous Technical Brochures

6

Work likely to contribute to improved safety.

7

Work addressing environmental requirements and sustainable development goals.

WG form 2019-V6