全时间维度调度计划安全校核的设计与应用

doi:10.11930/j.issn.1004-9649.201908143

摘要/Abstract

摘要： 由于电网规模日益扩大以及电力市场的推进，电网运行的安全性和可靠性面临更严峻的挑战，调度计划安全校核工作变得尤为重要。针对大时间尺度下无法精确预测负荷及电网结构从而难以进行准确安全校核的情况，设计并开发了全时间维度调度计划安全校核系统。首先从电力调度运行生产流程对月度、周以及日前安全校核功能进行了论述，接着提出了月度、周以及日前全时间维度安全校核的目标。月度以电量完成和发输变电协调优化为目标，周以机组开机方式优化为目标，日前以发电计划为目标。对于月度安全校核，构建基于断面的发电可行域，优化机组的发电可行区间，从而弥补月度负荷预测的误差；对于周安全校核，优化确定机组开机方式；对于日前安全校核，优化发电机组出力。该方法已在某省级电网成功应用，应用结果表明所提出的方法有效，能够满足电网安全校核和生产实际需求。

关键词: 安全校核, 发电可行域, 阻塞断面, 灵敏度

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

吴迪, 王正风, 刘航. 全时间维度调度计划安全校核的设计与应用[J]. 中国电力, 2020, 53(5): 48-55.

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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链接本文: https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.201908143

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

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