Source:JASE-W Japanese Smart Energy Products & Technologies

https://www.jase-w.eccj.or.jp/technologies/index.html

Keywords

Y3

equipment or facility

Z4electricity

smart grid

E29electrical machinery
Fuji Electric Co., Ltd.

Community Energy Management System (CEMS)
Features■ Optimal operation and CO2 reduction by adjustment of power demand of community energy
The Community Energy Management System (CEMS), which is used in an unstable power systemwith renewable energy (photovoltaic and wind power) generation, realizes optimal operation thatminimizes CO2 emission while solving power quality problems due to supply-demand imbalance andreverse power flow.
■ Linkage between EMSs
Factories, buildings, shops, and condominiums are introducing energy management systems (EMSs)
suitable for each of the structures (FEMS, BEMS, REMS, and MEMS) to attain energy optimization andenergy saving independently while community energy center manage the energy of the entire
community to control it.
Basic Concept or Summary

Photovoltaic andwind power generation

Cogenerationand fuel cells

Smart energy
storage system

Commercial powernetwork

Power distribution
officeCommunity

Linkage point
EMS visualization

Expanded use of renewable energy

Demand forecastingPower stabilization and levelingusing storage batteries

Coordinated operation
with large systems

Cooperation of electric
power companies

Renewable energy
generation forecasting
Participation of consumer
in energy operation

Shop

Smart meter

Building

Power company

Distributed
power sources

We constructed an integrated EMS platform that includes CEMSs and various EMSs that support the community energy system
Various features constructed with EMSs can be applied to various systems, both in and out of Japan.
Therefore, each function can be packaged for flexible deployment.

Customers

O-35

S1Automated power distribution

Factory
Smart meter

Photovoltaic
power generation

Photovoltaic
power generation

Storage battery

Storage battery

Smart meter
Photovoltaic
power generation

Fuel cell

Storage battery

Fuel cell■ Characteristic featuresü Support of both small and large systems (scalability)
On a common platform, various operation systems (such as CEMS, BEMS, FEMS, and REMS),
large and small, can be constructed.
ü Collection and visualization of energy data
ü Demand forecastingü Optimal operation plan
ü Global language support
The multi-language support (Japanese, English, and Chinese) enables application in various
districts and countries.
ü Multi-area management support
More than one area can be managed with one system. Furthermore, hierarchical management ofcustomers, facilities, etc. is available.
ü System expansion through linkage with other company's systems
Linkage between CEMS and other company's applications is available via standard interfaces.

Overall configuration - Introduction to Micro Grid

Energy Center

O-35

Power plant

Shopping mallcom
mandFactoryCommunity-installed
energy storage system

Smart PCSPower generationPowergenerationcommandCharge/dischargecommandNetwork sensor

Hospital

Fuel cell

Next-generation
BEMS forhospitals

House and condominium

Indoorindicator

Smartmeter

Convenience store

Town mega
solar powerplant

Next-generation
FEMS for factories

Main functionl Renewable energy (photovoltaic and wind power) generation forecastingl Optimal supply-demand plan, supply-demand control, and frequency control using storage batteriesl Demand response (DR) feature for ensuring load leveling and supply-demand balance
Effects or Remarks
The Dynamic Pricing (DP*) was conducted to verify the technology for balancing and stable control ofsupply and demand of energy in the community.
The electric utility rate during peak hours was changed in five stages from 15 to 150 yen/kWh. As a result,an effect of decreasing the demand by 9 % to 13 % was confirmed (result of social demonstration in theKitakyushu Smart Community Creation Project).
* DP: Dynamic Pricing
The electric utility rate is changed daily according to changes in the supply-demand circumstances of thecommunity. The power saving actions by customers are promoted by raising the electric utility rate in atime zone when the demand becomes excessive in comparison with a limited supply volume (such as
daytime in summer). One of the demand responses (DRs).
Installation in Practice or Schedule
Domestic

In addition to the Kitakyushu Smart Community, other projects include the developmentof the Tohoku Smart Community and the demonstration frequency stabilization for
remote islands.

Overseas

Working on overseas projects, mainly in Southeast Asian countries, taking advantage ofthe record of performance cultivated in Japan.

Contact:

Fuji Electric Co., Ltd.
Gate City Ohsaki, East Tower, 11-2, Osaki 1-chome, Shinagawa-ku, Tokyo, Japan
Tel: +81-3-5435-7028 Fax: +81-3-5435-7529
URL: https://www.fujielectric.com/