North China Northeastern China Northwestern China Germany US Spain 0 10 20 30

North china northeastern china northwestern china

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North China Northeastern China Northwestern China Germany US Spain 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% Solar Wind Hydro Nuclear Gas Coal
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Challenge III: Heat-driven Operation of Combined Heat and Power (CHP) Units National Average 25% North China 50% Northeast China 70% Heat demand distribution The share of CHP in thermal units Must-run units in heating season Possible range of power output decreases with the increase of heat demand Heat demand is predetermined by heating companies Typically range between 70%- 90% of the nameplate capacity in heating season. Limited Flexibility of CHP
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- 14 - Deregulatio n (2003) Deregulatio n (2003) Five generation groups Five generation groups Two grid companies Two grid companies Challenge IV: Rigid Regulatory Structure
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National Dispatch Center 1 Regional 5 Provincial 26 Municipal 309 County 1702 Challenge IV: Rigid Regulatory Structure Annual/monthly inter-regional transmission plan and dispatch of major units (e.g. Three Gorges Dam) Annual/monthly inter-provincial transmission plan Provincial energy balance and operational dispatch
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Ultra-high voltage super grid State Grid: in 2015 DC:800KV DC:1100KV AC:1000KV
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Deployment of pumped hydro storage
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Potential Cost Effective Solutions Electric Vehicles Integration with Heating System Interregional Transmission Coordination
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Opportunities for Increasing Wind Integration and Reduci ng Emissions 1. Strategy of Coordinated Interregional Transmission : Northeastern region (2020) Shaanxi 2. Energy System Integration between Power and Heating Systems : Beijing-Tianjin-Tangshan (“Jing-Jin- Tang”) region (2015) 3. Influence of EV Development on Wind Integration : Beijing area (2020) Hourly simulation model considering characteristics of individual units Annual assessment of economics
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Opportunities for Increasing Wind Integration and Reducing E missions 1. Strategy of Coordinated Interregional Transmission : Northeastern region (2020) Shaanxi 2. Energy System Integration between Power and Heating Systems : Beijing-Tianjin-Tangshan (“Jing-Jin- Tang”) region (2015) 3. Influence of EV Development on Wind Integration : Beijing area (2020) Hourly simulation model considering characteristics of individual units Annual assessment of economics
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How to Coordinate Interprovincial Transmission? Four possible strategies in 2020 : A) BAU: to determine the interprovincial transmission on an nual and monthly basis ; B) Taking advantage of the interprovincial available transmis sion capacity, sharing reserve among different regions; C) Allowing daily scheduling of interprovincial transmission, but keep reserve requirement within the province; D) Optimizing both transmission and reserve on a regional g rid. EIM HLJ JL LN
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Monthly Wind Curtailment Rate under Different Transmission Scenarios
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Potential Cost Effective Solutions Electric Vehicles Integration with Heating System Interregional Transmission Coordination
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Distribution of Heating Demand in China Geographical distribution of heating demand in 2010
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The Framework of Integrated Power and Heat Energy System Demand Demand Supply Supply
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