计及不确定性因素影响的变电站220kV侧检修规划
Maintenance Planning of 220 kV Side in Substation Considering Uncertain Factors
张侃君 1王婷 1周虎兵 1黎恒烜 1李晨 2唐爱红2
作者信息
- 1. 国网湖北省电力有限公司电力科学研究院,武汉 430077
- 2. 武汉理工大学自动化学院,武汉 430070
- 折叠
摘要
随着高比例可再生能源并网,电源侧的功率波动不断增强,变电站220 kV侧检修期间电网运行面临更多的不确定性风险,对检修规划方案的鲁棒性提出更高要求.但目前还没有成熟的方法能够辅助制定适应于多种不确定性因素耦合的输电环境下的变电站220 kV侧检修规划方案.为此,首先以输电网规划理论为基础,结合工程实践经验,以经济性成本与检修期间系统的可靠性运行能力为优化目标,综合考虑检修工程约束条件以及电网潮流安全条件,构建了变电站220 kV侧检修确定性模型.进一步地,以概率驱动自适应鲁棒优化理论为基础,将可再生能源出力与设备随机故障等不确定性因素嵌入至上述确定性模型中,进而得到了计及不确定性因素影响的变电站220 kV侧检修规划模型,并基于benders分解与线性规划理论对模型进行优化,以提高模型的求解效率.通过对改进IEEE-RTS79算例及实际工程案例进行检修规划分析,验证了模型的有效性.
Abstract
As the integration of high proportions of renewable energy sources into the grid increases,the power fluctua-tions on the supply side increase.During maintenance of the 220 kV side in a substation,the power grid operation faces more uncertainty and risks,which demands higher requirements for robustness in maintenance planning.However,cur-rently there are no mature methods to assist in the development of maintenance plans that can adapt to the complex and changing transmission environment of the 220 kV side in a substation.To address this issue,this paper first builds a de-terministic model for substation maintenance planning on the 220 kV side based on the transmission network planning theory and engineering practice experience.The model considers the optimization objective of economic cost and the re-liability of the system's operation during maintenance,and takes into account maintenance project constraints and power grid flow safety conditions.Furthermore,by using the probability-driven self-adaptive robust optimization theory,renew-able energy output and equipment failures are incorporated as uncertain factors into the aforementioned deterministic model,thus a maintenance planning model for the 220 kV side of a substation that considers the effects of uncertainty factors can be obtained.The model is optimized based on the benders decomposition and linear programming theory to improve the accuracy and speed of the model solution.The effectiveness of the model is verified by analyzing the maintenance planning of an improved IEEE-RTS79 example and a real case in the power grid.
关键词
变电站220kV侧检修/输电网规划/不确定性因素/鲁棒优化/bendersKey words
maintenance of 220 kV side in substation/transmission system planning/uncertain factors/Robust optimi-zation/benders引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据