Optimized combined heat and power dispatch considering the coordination of heat loadelasticity and time-of-use demand response
DOI:DOI: 10.19783/j.cnki.pspc.201515
Key Words:heat load elasticity  time-of-use demand response  combined heat and power system  wind power accommodation
Author NameAffiliation
ZHU Weiye 1. School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
2. State Grid Liaoning Electric Power Co., Ltd., Shenyang 110300, China 
LUO Yi 1. School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
2. State Grid Liaoning Electric Power Co., Ltd., Shenyang 110300, China 
HU Bo 1. School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
2. State Grid Liaoning Electric Power Co., Ltd., Shenyang 110300, China 
LUO Huanhuan 1. School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
2. State Grid Liaoning Electric Power Co., Ltd., Shenyang 110300, China 
ZHANG Yin 1. School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
2. State Grid Liaoning Electric Power Co., Ltd., Shenyang 110300, China 
HAN Yue 1. School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
2. State Grid Liaoning Electric Power Co., Ltd., Shenyang 110300, China 
TANG Muyi 1. School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
2. State Grid Liaoning Electric Power Co., Ltd., Shenyang 110300, China 
TONG Qidong 1. School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
2. State Grid Liaoning Electric Power Co., Ltd., Shenyang 110300, China 
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Abstract:Electrical and heat loads have complementary characteristics in the peak-valley distribution in combined heat and power systems. In optimal dispatch, these complementary characteristics can effectively enhance the peak load regulation and alleviate the wind power curtailment caused by the strong coupling in electricity and heat. Therefore, this paper studies the optimal dispatch of a combined heat and power system considering the coordination of heat load elasticity of heating buildings and the time-of-use electrical demand response. The synergistic promotion mechanism of wind power integration by electrical and heat loads is expounded. From the characteristics of heat and power loads, the heat elastic load model of heating building and the model of time-of-use demand response are established respectively. Then, the coordinated response model of the heat and power loads is established. Incorporating the multi-energy loads model, a day-ahead dispatch model of the combined heat and power system considering the coordination of loads is constructed. The analysis of the example shows that the coordination of heat load elasticity of heating building and time-of-use demand response can effectively improve the operational economy of the system and promote wind power accommodation. This work is supported by the National Key Research and Development Program of China (No. 2017YFB0902100).
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