基于分布估计算法的含DG配电网保护布点优化方法  

A Distribution Network Protection Distribution Optimization Method Based on Distribution Estimation Algorithm

作　　者：王韶亮 罗国敏[1] 谭颖婕 WANG Shaoliang;LUO Guomin;TAN Yingjie(School of Electrical Engineering,Beijing Jiaotong University,Beijing 100044,China)

机构地区：[1]北京交通大学电气工程学院,北京100044

出　　处：《电网与清洁能源》2024年第9期21-28,37,共9页Power System and Clean Energy

基　　金：国家自然科学基金资助项目(52077004);国网安徽省电力有限公司科技项目(52120021N00L)。

摘　　要：配电网中继电保护装置可以有效提高系统的运行可靠性,但同时增加了系统的成本投入。传统的保护布点方法不适用于含分布式电源接入的情况,提出了一种计及分布式电源影响的配电网保护布点优化模型,并采用分布估计算法进行求解。首先,分析了分布式电源接入配电网对保护布点的影响。然后,建立了以经济成本最小为目标、供电可靠性为约束的保护布点优化模型,并采用全局优化的分布估计算法对优化模型进行求解。最后,以某实际变电站简化拓扑为例,对所提方法进行了算例分析。结果表明,所建立的优化模型可以很好地适用于分布式电源接入的情况,并且,所采用的分布估计算法对于结构复杂的配电网来说,在收敛性上优于其他算法。The relay protection device in the distribution network can effectively improve the reliability of the system,but at the same time increase the cost of the system.The traditional protection distribution method is not suitable for situations involved with distributed power sources.Therefore,an optimization model of distribution network protection distribution considering the influence of distributed power supply is proposed,and the distribution estimation algorithm is used to solve the model.Firstly,the influence of distributed power on the distribution network is analyzed,and then the optimization model of the protection distribution is established,which takes the minimum economic cost as the goal and the reliability of the power supply as the constraint.The optimization model is solved by the distribution estimation algorithm of global optimization.Finally,the simplified topology of an actual substation is taken as an example to verify the proposed method.The results show that the optimization model established in this paper can be well applied to the situation of distributed power access,and the proposed distribution estimation algorithm is superior to other algorithms in convergence for the complex structure of the distribution network.

关 键 词：保护布点 分布式电源 可靠性 分布估计算法 

分 类 号：TM713[电气工程—电力系统及自动化]