Design and Application of Full-Time Dimension Dispatching Schedule Safety Check

doi:10.11930/j.issn.1004-9649.201908143

Abstract

Abstract: With the increasing of power grid scale and advancement of power market, the safety and reliability of power grid operations are facing increasing challenges, and the safety check of power generation schedules becomes particularly important. Under large time-scale, it is almost impossible to accurately predict the load and grid structure, so it is difficult to conduct safety check accurately. To solve this problem, this paper designs and develops a safety check system of full-time dimension dispatching schedule. It firstly discusses the monthly, weekly and day-ahead safety check functions according to the power dispatching process, and then proposes the full-time (monthly, weekly and day-ahead) dimension safety check goals. The monthly target is based on the completion of power generation plan and the coordinated optimization of power generation and transmission. The weekly target is based on the optimization of generator start-up mode. The day-ahead target is based on the power generation schedule. For the monthly safety check, a power generation feasible domain is constructed based on the power flow section, and the generation feasible range is optimized to compensate for the error of monthly load forecast. For the weekly safety check, the generator start-up mode is determined through optimization. For the day-ahead safety check, the output of generator unit is optimized. The system has been successfully applied in Anhui Power Grid, and the application results show that the proposed method is effective and can meet the needs of power grid safety check.

Key words: safety check, generation feasible domain, blocking section, sensitivity

WU Di, WANG Zhengfeng, LIU Hang. Design and Application of Full-Time Dimension Dispatching Schedule Safety Check[J]. Electric Power, 2020, 53(5): 48-55.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.201908143

https://www.electricpower.com.cn/EN/Y2020/V53/I5/48

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