Smart Community Demonstration PJ in Maui

2011 Asia Pacific Clean Energy Summit Smart Community Demonstration PJ in Maui Sep. 13 th, 2011 1:30 p.m. 3:00 p.m. Hitachi, Ltd. Smart City Business Management Division Fumitoshi Emura Hitachi, Ltd. 2011. All rights reserved.

Contents 1. An advanced Island Smart Grid Demonstration Project 2. Objectives & Goals 3. Demonstration Organization & Schedule 4. Overview of Demonstration Project 5. Systems Overview 6. Geographical Image of the Demonstration 7. EV Charger Specification Hitachi Tree in Moanalua Gardens 1

1. An advanced Island Smart Grid Demonstration Project In Maui, Larger scale renewable energy has been already introduced. In addition, PV and EV high penetration have been expected. Hitachi Island Smart Grid Solution Solution Smart PCS Evs and PHVs charger control Battery system Demand Resopnse Information and communication Technologies Issues Excess Energy Influence on frequency Influence on distribution line voltage Difficult of resouce planning Project Feed back to the Products Solution for Impact of EV & PV High Penetration Stable Supply of Electric Power Maximum Utilization of Renewable Energy Hitachi, Ltd. 2011. All rights reserved. 2

2.Objectives & Goals 3

3. Demonstration Organization & Schedule Other supporting partners Nissan Motor Co., Ltd. Advanced Energy Company U.S. Verizon Gr. Okinawa Electric Power Company Stanford University 2011 2012 2013 2014 Feasibility Study System Design Construction Hitachi, Ltd. 2011. All rights reserved. Demonstration 4

4. Overview of Demonstration Project Theme EV-based Remote Island Smart Grid Model on Maui (Hitachi, Sharp, and JFE Engineering) All island Energy Surveillance & control System EMS EVECC Electric Power Storage Charging Station Information Electricity Distribution Substation Information Theme Smart Grid Model at a Substation with One Distribution Grid Level in Kihei (Hitachi) Theme Smart Grid Project for Low-voltage Transformer Level Systems (Hitachi) Theme Comprehensive Research 1) Analysis and evaluation of results from smart grid demonstration (6 companies) 2) Evaluation of cyber security (Hitachi, HP Japan, and Cyber Defense Institute) 3) Evaluation of the economic viability of the system (Mizuho Corporate Bank) 4) Creation and verification of a cutting-edge low-carbon social infrastructure system business model on a remote island (Hitachi, Mizuho Corporate Bank) Hitachi, Ltd. 2011. All rights reserved. 5

5. Systems Overview Maui Monitoring the Demand- Response of the grid.(ratio of Renewable Energy Usage, etc) One Distribution Grid Level Console PCS smart smart PCS Demand Side Monitoring voltage, Monitoring load level In-house voltage, load controldlc Load circuit breaker PV output voltage, reactive power, remote start-up lamp by Smart PCS Unit-by-unit remote load control Remote control method (via Home Gateway or via direct control / discuss during FS) 6

Guangzhou Knowledge City Tianjin Eco-City Dalian Best City New Mexico Smart grid Project Hawaii Smart Grid Smart community F/S in Malaga, Spain Delhi- Mumbai Ind Corridor F/S Project Okinawa EV dissemination Yokohama Smart City Project Kashiwano-ha Campus City Project Rokkasyo-mura PoC for Smart Grid Hitachi, Ltd. 2011. All rights reserved. 10

Mahalo!!

A1. Summery of Solutions (1) All over the island No. Problems Solutions Detailed Methods 1 Excess energy problem 2 Frequency fluctuation 3 Obstacles to EV penetration(high cost) Demand shift correspondent to excess energy from wind farm Load cut off in case of a sharp drop of wind farm generation Decision support for costminimized charger location planning Scheduled control of demand side appliances(ev charger, water heater, battery) -DMS cuts off the demand side appliances (EV charger, water heater, battery) Charger location study with the decision support tool investigating the impact on distribution grid (2)Under the substation/lv No. Problems Solutions Detailed Methods 4 Unknown feeder status 5 Voltage fluctuation(mv) 6 Voltage fluctuation(lv) 7 Overload from EV charge Visualization of feeder status with sensor and meters Load control & reactive power control(mv) Load control & reactive power control(lv) Load control (LV) -RTU data & line sensor on feeder for MV load & voltage --DMS & smart meter for LV load & voltage DMS control charge & discharge of on-grid battery Smart PCS control the reactive power & demand side load -DMS monitor the feeder load and control the demand side load through Home Gateway

A2. An advanced island smart grid demonstration with EV in Maui Situation to surround EV Diversification of power supply and CO2 reduction are demanded by environmental problem of the earth, and energy conservation promotion by introduction EVs attracts attention all over the world. Issue Excess energy by renewable energy output Overload of delivery of electric power equipments by EV quick charging load Influence of distribution network by EVs charge/discharge are not clear Action Effective excess energy usage by instruction of EVs charge demand EV charger output power control and operative number control for distribution network stabilization Clarification of influence to give to distribution network by EV charge/discharge simulation using some batteries Wind Power PV 13

A3. System Configuration of DMS and µ-dms # Functions Overview 1 SCADA (Supervisory Control and Data Acquisition) Function 2 Generation/Execution of the Switching Operation Procedures 3 Fault Management and System Restoration Function 4 Overload Management Function The equipment of the distribution network is periodically monitored and controlled by the operator. Switching operation procedures for network change are automatically generated and executed by the operator. When outage occurs by a fault, the switching operation procedures for recovery are automatically generated and executed by the confirmation of the operator. When overload occurs, the switching operation procedures to eliminate the overload condition are generated and executed by the confirmation of the operator. 5 Load Forecast Function Load forecast of each distribution sections (nodes) is calculated and used for simulation of the network. 6 Distribution Simulation System 7 Demand Response Management Function The simulation is made by AC load flow calculation on the distribution network. Direct control of demand-side appliances through home gateways. 8 Communication with µ-dms Data exchange and cooperative control with µ-dms # Functions Overview 1 Monitoring Function Monitoring the load and voltage of the distribution transformer and the temperature of distribution lines. 2 Controlling Function Direct control of demand-side appliances through home gateways cooperating with DMS. 3 Communication with DMS Data exchange and cooperative control with DMS 14

A4.Comparison with other PJs Area Smart Grid Technology Incentives for Dispersed Energy Source ICT Operation &Planning Customers Project Thermal PV Battery Cyber Cell System Modeling/ <Consortium Leader> Wind DR EV Storage Roof- PV under over Secutiry AMI Wireless Phone Price Others Operation Simulation Farm Farm Top 100kWh 100kWh NEDO Projects US Maui Kihei(NEDO) <Hitachi> New Mexico(NEDO) Europe Spain(NEDO ) <MHI> Lyon(NEDO) <Toshiba> Other projects US Maui Wailea (GE site) <GE> Europe Japan Denmark (EDISON) <IBM> Amsterdam <Accenture> Rokkasyo Mura 0.1MW 15

A5. Smart Grid Demonstration Project at Rokkasyo Village Rokkasho-Mura(Village) Pilot Plant This project evaluates system functionality and energy optimization by using closed grid at specially authorized by Japanese Government. Power Grid Power Distribution Line -Grid side supply and demand management and control (includes power generation and storage) -Energy service integration -Demand side power generation and storage control (includes HEMS functions) Futamata Wind Power Generation Site (JWD) Inter-connection Point PV(100kW) Photovoltaics (Hitachi) Hub Battery (100 kw) Charge/ Discharge NAS Battery (NGK) Multi family building PCS PCS Charge/ Discharge Control Smart House (Panasonic) Surveillance and Control Information Exchange Automatic Surveillance and Control Server (CEMS Server) Heat Pump Control PHV (Plug-in Hybrid Vehicle), PCS (Power Conditioning System) NAS (Sodium-sulfur battery), JWD (Japan Wind Development Co., Ltd.) CEMS (Community Energy Management System) Operator Monitor Smart House (JWD) Information Flow Control Mini-Information Hub Server Control Center (Hitachi) Smart House (Toyota) PHV Charger PHV EV & PHV (Smart Center) Smart House/ Building 16

A6. ZEM2ALL Project in Malaga, Spain Demand Forecast Demand Response CEMS CEMS Sub-EMS/Demand Side CEMS (Community Energy Management System) Water Heat Home Elactricity Commercial Industrial Demand Forecast EV Demand Response EV infrastructure e-parking Quick Charger User Service ICT Platform Taxi EV-Bus (provision) Road Transport EV Center User Service ICT Platform Power System Drainage Municipal Waste Wind farm V2H/H2V EV Infrastructure PV farm Battery 17