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Mitsubishi Electric’s activities on

Smart Community (SC)

May.23, 2013

METERING BILLING/CRM Asia

Tadashi Matsuzaki

Chief Technology Officer

Smart Community Project Group

Corporate Marketing Division

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1. What’s a Smart community and its challenge? How

does Mitsubishi Electric deal with it?

2. Technical development and Mitsubishi Electric’s

activities

3. Feasibility Study and demonstrate experiments

Contents

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1. What’s a Smart community and

its challenge? How does

Mitsubishi Electric deal with it?

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Requirements on energy in a SC

1. Energy independence should be secured even if a wide-are blackout

happens.

2. The power supply system should be a distributed power system

including renewable energy and cogeneration systems.

3. Energy consumption in customers should be fundamentally reduced.

4. The supply side and consumer side should collaborate each other

via DR* *DR：Demand Response

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Supply

Side

Information

Power

Supply a certain amount of power

CEMS

Big power producer

(Power Utility

Company)

Energy System in a SC

Consumer Side

PV On-site

Generator

Local

Generator

EV Center

Using ＩＣＴ

FEMS

HEMS

MEMS

BEMS

BEMS

Local Power Supply

Power Supply

for a specific area

EMS：Energy Management System

CEMS：Community EMS BEMS：Building EMS

FEMS：Factory EMS MEMS：Mansion EMS

HEMS：Home EMS

Butteries

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Challenges on energy system in a SC

Technical Challenge

Institutional Challenge

Operational Challenge

-Demand-Supply Balancing

-Frequency adjustment

-Optimization of voltage

in distribution

- Flexible operation of distribution

network particularly blackouts case

-Deregulation of the electric power

for low-voltage customers

-Deregulation of wheeling service

for low-voltage consumers

-Operational cost on power

generations

-Maintenance of local distribution

network

-Cost of wheeling and back-up

generators

- Incentive cost for DR

-Electric Tariff of Time of Use

-Collection of power charges

-Independent power supply

by a distributed power system

-Energy management by EMS

-Peak reduction by DR

Challenges on Community

Level

Co

nsu

me

r S

upply

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2. Technical development and

Mitsubishi Electric’s activities

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MITSUBISHI’s in-house test site for Smart Grid

and Smart community development

Bulk Power System

Customer

Distribution Network

Transformer substation (GIS, LRT)

EVs and charge station

Artificial load (buildings and houses)

-Operation center -Supply & demand control

system -Next-generation distribution

control system -Advanced metering

infrastructure -Energy management system

Variable speed pumped storage system simulator

Thermal generator simulator

Power system simulator

Rechargeable batteries

communication network

distribution network

Mega solar systems <4,000kW>

150 Smart meters Concentrator SVR SVC Switch with sensor

Self-sustained Operation

Simulator of generator

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We simulate and evaluate the optimal power system in a community with

PV, small gas generators in a community and power provided by a utility

company.

Optimization of voltages in distribution network

Batteries

PV

Equipment for

distribution

network

Power system

simulator Power Substation

Secure of Supply-Demand Balancing

DC/AC

Converter

Small Gas

generator

Supply-Demand

Control System Distribution

Control System

Optimization both of economy and environment

Supply-demand Control in a community

Power

System

Over voltage points by

reverse power flow

Community

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A certain amount of energy will be provided by local distributed power supply during an emergency. In the situation, supply-demand balance need to be adjusted by aggregating local power supplies.

Switch

High Voltage

Distribution

Network

Blackout by a

disaster or accidents

in power system

Supply-Demand Control in a local area

Low Voltage

Distribution

Network

Self-sustained operation in low-

voltage consumers

Self-sustained operation in houses Self-sustained

operation in buildings

Power Utility Company

Self-sustained operation by local power

supply during an emergency

Local

Power

Supply

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PV is being widely installed…

- PV contributes to “the reduction of CO2 emission” in normal situation and “a certain level of local independent operation” in blackouts.

- CEMS does the energy optimization in normal situation and the supply-demand control only by local power supply to secure the minimum level of living.

Local supply-demand control and the prediction of PV power generation

Provided by a utility company Provided by a

utility company

Energy Optimization &

Power Reduction by

life pattern changes

Current

Keep a minimum level of living by reducing energy

usage and using power by PV and on-site generator

In a smart community

There are various rules and restrictions in Electricity Business Act in Japan. (eg. It’s not allowed to use distribution networks owned by a utility company. Deregulation of electric power is not allowed for low-voltage customers.）

There are some cases that installing their own distribution networks are considered.

Power consumption and Power Supply

PV

Community

On-site

Generator

(Normal)

Blackout

Normal

Blackout

Blackout

PV

Absorption of variation of

PV output by utility company Backup on-site Generator

Community

On-site

Generator

(Normal)

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Multiple power supplies,

…Power provided from a power system, PV, On-site generators, local small thermal power generators, Batteries

Corresponding to various conditions

…”Temperature and Climate”, “Incentive for the reduction of power usage”, “Predicted power generation by PV”, “ Remaining battery level” , “Predicted demand”

In order to accomplish the target, a plan should be made. The supply-demand control should be executed by following the plan.

…Selection of available power supplies, execution of demand control if needed, charging batteries possibly

In addition to supply-demand management, the prediction of PV power generation is important for smart community which has

PV systems

What’s the amount of power generation

tomorrow? I need to make a power

plan using it.

Local Supply-Demand Control and PV prediction

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＊Examples of TOU

a. Time-of-Use(TOU) : Prices are set depending on demand

b. Critical Peak Pricing(CPP): In addition to TOU, the higher price will be set at the critical peak

c. Real-Time-Pricing(RTP): Prices will be varied day-to-day depending on demand

d. Peak Time Rebate (PTR): In addition to TOU, rebates will be paid to customers who reduced power at the

peak

Public requirement

1. Energy consumption in customers should be fundamentally reduced.

Peak-cuts need to be realized.

2. Changes on electricity tariffs： Countermeasure for the power peak

It should be more expensive when the demand is higher.

Introduction of Time of Use

The purpose of EMS for customers

1. The optimal energy use maintaining comfort a. Minimization of electric bill

b. Maximization of incentives

c. Maximization of renewable energy

2. Prepare for an emergency of energy a. The optimal energy use during power shortage

Supply-Demand Balancing by DR - Changes on “Electricity Tariff” in future and for customers

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3. Feasibility Study and

demonstrate experiment

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Demand Balancing System

Demand Prediction

Operation Plan

Economic

Load Dispatch

Tie-Line Control

Local Control

Elementary

school

Junior High

School

Elementary

School

Water Supply

Authority

Commercial

Grid

City Hall Network for

controlling

Wind Generator

8kw

PV

10kw

Wind Generator

8kw PV

10kw

Wind

Generator

4kw

PV 10kw

Sewage treatment plant

Control Mode Interconnect operation

Island operation

Output

Control

Command

Junior High School

ＰＶ（Total １３０ｋＷ）

Biomass Generators （１７０kW×３）

System Image

“Hachinohe City” Micro Grid Project

● Demonstrated the value of the EMS control system for renewable energy

● Control of the power flow at the interconnection point to avoid variation of renewable and demand instability

● Frequency and Imbalances control with a full integrated system that supports all the islanding operation from the planning

stage to the final direct control of batteries and generators

The stable control of renewable energy realized a 70% CO2 reduction and the long term islanding operation

Interconnection

Point

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Local produce and consume model using geothermal power

Specific customers

Supply

Local Power Supply

ICT

Power

Area

Utility

Company

Geothermal

City

Office

Counsel

Hall

(Shelter)

CEMS

School

(Shelter)

Feasibility Study of “Energy Local Supply and Local Consumption model”

Geothermal power owned by

Area Utility Company limitedly supplies Specific customers as

a a base supply.

Power Utility Company

supplies demand variation

Power

Utility

Company

Concept of the way of power supply using geothermal power in a time of blackout

Commercial

Building

In case of an emergency situation, the

shelters are the top priority out of all

public buildings to provide power.

Power

Utility

Company

Resident Resident

Commercial

Building

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Customer3 (Factory)

Customer3 (Factory)

Customer2 (Business Office)

Customer1 (Public Office)

CEMS

CEMS：Community Energy Management System CGS：CoGeneration System

Special Purpose Company

CGS

PV（Self consume

）

Steam

蒸気利用の需要家

FIT

Boiler Water heater Generator

Feasibility study of power supply for a specific area in case of an industrial park

A power utility

company

Ｌｏｃａｌ power supply provides 50% of total power in the industrial park

The rest 50% will be supplied by a power utility company

GAS

Battery

Hot

Water

Cold

Water

Power

Local heat supply is a key factor in terms of profitability

Power provides to

shelter in

emergence situation

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PV Stationary batteries

Smart Meter

BEMS

CEMS

HEMS

Wireless

Metal line (Power Line)

CGS (Gas Cogeneration)

●Supply-Demand Management ●Voltage control-management in distribution network ●AMI,CRM ●Demand Response

Local ICT network

Devices for Power generation and storage

Devices for distribution network

Summary：Smart Community related businesses

and elements

Demand Controller

Distribution Network

Small-size generator (Biomass, Geothermal, Wind, Hydro)

Electric Power equipment (SVC,SVR,Transformer, switches)

FEMS

Power supply

business

Fiber Optical SC

installation

business

Solution

ICT

Power Network

Component Business

Energy related devices

Element

SC related business

●Operation

●Maintenance

Component Business

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