Decentralization and Cooperative Management in Electric Energy System Hideo Ishii, Ph.D.
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1 2017 IERE-TNB Putraja Workshop :Technologies Shaping the Electric Supply Industry Decentralization and Cooperative Management in Electric Energy System Hideo Ishii, Ph.D. November 22, 2017 Advanced Research Organization for Smart Society Waseda University
2 Change in the electric energy policy through 3.11 After 3.11 Before 3.11 Realization of Low Carbon Society by deploying energy management system Installation of high-efficiency equipments & appliances Integration of renewable energy Integration of EV/PHV Balancing demand-supply for electricity & gas etc. + March 11, 2011 Electricity saving Peak cut in electricity demand Lost significant amount of base load supply 2
3 Long term perspective of electricity demand & supply COP21 Paris Agreement : GHG deduction by 26% from 2013 Consumption Economic Growth 1.7%/year 966 Bill.kWh Drastic Energy Saving 196Bill.kWh ( 17%) 981 Bill.kWh T&D loss etc. 1065Bill.kWh Power Source 1278Bill.kWh Saving RES 23% Nuc. 21% GAS 27% Geothermal 1.1% Biomass 4.2% Wind 1.7% PV 7% Hydro 9% PV : 64GW Wind: 10GW Coal 26% OIL 3%
4 Energy Policy & Innovation on Demand side Foundation of the Policy Elevating Energy Self-Sufficiency : 6% 25% Reducing Energy Cost : lower than present Reducing GHG Emission : 26% (base : 2013) Supply Side Electric Power System Reform Mixed use of various resources while increasing RES Demand Side Smart Energy Saving : Energy Management / FEMS, BEMS, HEMS NET Zero Energy House / Building (ZEH / ZEB) Smart Demand : Demand Response Co-Generation, FC EV / PHV Battery, Storage 4
5 Transition of Electric Energy System Power Grid Power グリッド 需要家 New DERs at the end of the Grid low visibility, uncontrollable Accommodate these disruptive technologies Bulk Generation Various DER? Demand response FEMS Co-generation HEMS EV Rooftop PV FC storage BEMS : 2017 ALL RIGHT RESERVED 5 PV
6 Paradigm Change in Electric Energy System Electric Power System Reform Large scale RE installation Large Power Plants + Bulk Grid Demand : Given (Forecast) Vertically Integrated Power Flow : one way Basically Dispatchable Generation Cooperation with Distributed System - Various Resources: e.g. EV, Battery - Integration vs Local Optimum Demand : Control - DR, Nega-watt Trading Horizontally Divided - New Rules, e.g. Simultaneous Equivalence Power Flow : bi-directional Intermittent (Renewable) 6
7 Supply-Demand Balance Control Demand Variation from RE Variation of Total Demand A few tens of min~ several hours component A few min. ~ A few tens of min. component A few sec. ~ A few min. Time Amplitude of demand variation EDC(economic load dispatching control) Forward control based on demand prediction LFC GF 20sec. 2~3min. Variation period EDC 10~20min. LFC(Load Frequency Control) For unpredictable demand variation (1~2% of total demand) GF(Governor-Free) For fast demand variation which can not be covered by LFC 7
8 Challenges in New Paradigm New Electric Energy System Two-way power flow Combination of central & distributed control Co-existence of different optimization : supply-demand balance & new values - maximum use of renewable energy recourses - efficient use of energy including heat, transportation, etc. Resiliency : preparation for emergency New kind of Control for Grid Operator Demand Response and PV Generation Not necessarily owned by grid operators Various sizes The smaller, the larger the number 8
9 RIANT Overview RIANT : Research Institute for Advanced Network Technology Director Prof. Y. Hayashi + 11 Faculty Members + Research Associate Dr. S. Yoshizawa <Research Member> Prof. + H. Ishii Assoc. Prof. Y. Fujimoto Assoc. Prof. M. Ito + 4 Regular Researchers 12 Adjunct Researchers Research Area Distribution network operation methodologies and algorism - voltage regulation - loss minimization Home Energy Management and Human Comfort Data analysis and application - Forecast : demand, RE generation. National Project Distributed cooperative EMS (CREST) Home Energy Management + Demand Response & Standardization WP & PV variation mitigation in power grid + Smart Inverters International Standardization of Communication connecting Grid and Customers 9
10 Shinjuku Demonstration Center Layout 10
11 Devices and Appliances in Shinjuku Demo. Center DRAS Smart Houses Smart Meters Smart GAS Meter HEMS Analog Grid Simulator (ANSWER) Air Cond. PHV/EV Charger Distribution Boad Fuel Cells Heat Pump Water Heater Battery PCS for PV 11
12 Electricity Price Electricity Consumption Demand Response Test with Demand Side Equipment Interactive information(demand Response :DR) Price:Signal from Grid EMS Peak shift/cut (control with HEMS) Gather Information HEMS Decide Orientation Order Energy consumed EV/PHV PV Fuel Cell Distribution Network Simulation System (ANSWER) Voltage control Current control Time Route A Smart Meter DR Signal Evaluation Route B HEMS Charge/ Discharge Control Output control Smart control Peak Shift/cut International Standard Protocol DRAS and Head End System meter reading DR Signal output TOU Change of contract capacity Load control Internet Route C wire Current Information Current Control Air Conditioner Light Current Control Heat Pump Water Heater Battery+PCS 12
13 DR & RES Dispatch Center Utility A DR dispatch RE dispatch EMS Demonstration Center Two-way communication IF-HUB Utility B Utility X DR dispatch RE dispatch DR dispatch RE dispatch Nega-watt Server Nega-watt aggregator RE Control Server RE control aggregator 13
14 Research Perspective Distribution line voltage control Sensing : voltage / current Utilizing AMI Autonomous / Central control of voltage regulators (SVR, LTC, etc.) Forecast : Demand, PV generation Smart Inverters Energy Resource Aggregation Cooperative Management & Integration of various energy resources by aggregation Load : Air conditioner, Lighting Water Heater Storage : Battery, EV/PHV Generation : PV, Generator, FC Architecture, Function Allocation & Standard Communication 14
15 Academic Collaboration : CREST (JST) 15 Japan Science & Technology Agency CREST Core Research for Evolutionary Science and Technology Development of distributed cooperative EMS methodologies for multiple scenarios by using versatile demonstration platform
16 Targets of EMS Project 1. Propose integrated cooperative EMS methods for multiple scenarios G/H/B/MEMS method Forecast Plan Control Loss minimization scheme for DS Computer science Economics Cyber security Satellite data 2. Construct EMS platform Implement System Link DR server Monitoring system EMS Simulation Model (Energy cyber field) 3. Embed EMS methods in practical field HEMS B/MEMS GEMS EMS experimental U (Energy physical Implement field) HEMS Support GEMS BEMS Evaluation 16 Actual Power System
17 Concept of EMS Platform for Designing Sustainable Smart City EMSP for designing smart city Satellite data - Solar radiation Sustainable indices of smart city Voltage [V] Distribution network data - Topology, PV, Load Evaluation Geographic data - Longitude, Latitude, Use district, Building coverage Voltage deviation Distribution NW loss PV curtailment CO2 emission Line capacity margin Power loss [kwh] Monitor BEMS GEMS HEMS Control Consumers cost Energy self-sufficiency etc. EMS methodologies 17
18 Spatiotemporal Modeling of City in EMS Platform Target city : Komae, Tokyo [km2] 18 feeders network 10,546 households PV 80% Target city Komae-shi, Tokyo [km2] 18 feeders in J-Model 10,546 households PV 80% Solar radiation 1k m2 mesh data by meteorological satellite 18
19 Evaluation Result of PV Curtailment in Target City Conventional GEMS Advanced GEMS Voltage [V] PV curtailment Voltage [V] No PV curtailment Target city 10,546 households, PV 80%, 18 feeders 19
20 Open DATA based on actual distribution grid 18 Feeders Test Model 1 substations, 18 feeders, 100 switches,,total line length 155 km 48 feeders Peak load: 152 GW, feeders 25.8 GW (17%) Chugoku Kansai Hokuriku Hokkaido Tohoku smart-kikou@list.waseda.jp Kyushu Shikoku 46 feeders Chubu 24.5 GW (16%) Tokyo 49.8 GW (32%) 20
21 21
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