1.电力传输与功率变换教育部重点实验室(上海交通大学)，上海市 200240;2.国网湖南省电力有限公司电力调度控制中心，湖南省长沙市 410004;3.国网上海市电力公司电力调度控制中心，上海市 200122;4.国家电网有限公司国家电力调度控制中心，北京市 100031;5.电力系统及发电设备控制和仿真国家重点实验室(清华大学)，北京市 100084
1.Key Laboratory of Control of Power Transmission and Conversion (Shanghai Jiao Tong University), Ministry of Education, Shanghai 200240, China;2.Electric Power Dispatching and Control Center of State Grid Hunan Electric Power Company Limited, Changsha 410004, China;3.Electric Power Dispatching and Communication Center of State Grid Shanghai Municipal Electric Power Company, Shanghai 200122, China;4.National Electric Power Dispatching and Control Center of State Grid Corporation of China, Beijing 100031, China;5.State Key Laboratory of Control and Simulation of Power System and Generation Equipments (Tsinghua University), Beijing 100084, China
This work is supported by National Natural Science Foundation of China (No. 51877134).
Due to the increasing proportion of the installed renewable energy capacity, conventional units have to undertake massive contingency reserves, which leads to poor economics of unit operation. To resolve this issue, this paper proposes the concept of decentralized transfer of contingency reserve (DTCR), which refers to the transfer of part of the centralized contingency reserve from the supply side to the demand side. Then, the benefit assessment method of DTCR as well as reference indicators are developed. The observed diminishing marginal benefit (DMB) of DTCR serves as a reference to select a reasonable capacity of decentralized reserve. The economic load rate threshold (ELRT) is proposed to quantitatively assess the economic load rate range of producing DTCR benefits. Finally, the benefit size, benefit mechanism, impacting factors and applicable scenarios of DTCR are analyzed using 5 IEEE standard systems of 14 buses to 300 buses and considering wind power generators and demand response. Results indicate that the proposed DTCR system can continuously generate economic benefits, optimize power flow distribution, and reduce network loss in daily dispatching. The benefit rate at a single hour can reach 0.34%~12%, and the total benefit in a typical day can reach 2.5% of the total generation cost.
XIAO Jucheng,HE Guangyu,ZHANG Siyuan,et al.Benefit Assessment of Decentralized Transfer of Contingency Reserve[J/OL].Automation of Electric Power Systems,http://doi.org/10.7500/AEPS20191027004.