基于改进暴力搜索算法的全双向变流供电系统参数设计

doi:10.19595/j.cnki.1000-6753.tces.210431

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摘要针对全双向变流供电系统（双向变流装置作为唯一变流器的供电系统）中潮流计算和参数设计问题,该文建立考虑双向变流装置容量约束的系统潮流计算模型;以潮流计算算法为基础,提出一种基于改进暴力搜索算法的双向变流装置参数设计策略,该算法考虑任一牵引降压混合所（牵混所）解列的情况,以不考虑双向变流装置容量约束的仿真结果为基础,将容量、下垂率和空载电压分三层迭代以求得极限解集。对实际算例进行分析,考虑双向变流装置容量约束后牵混所整流峰值功率得到控制,相邻所可提供功率支援。提出的策略搜索次数为传统暴力搜索算法搜索次数的1.63%;算例工程中,列车为6B编组,最高速度为80km/h,采用上述策略得到解集中,双向变流装置容量下限为7MW。

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关键词 ：双向变流装置, 参数设计, 改进暴力搜索, 容量约束

Abstract：Aiming at the power flow calculation and parameter design in the power supply system (the bidirectional converter device is the only converter), this paper establishes a power flow calculation model of urban rail power supply system considering the capacity constraint of the bidirectional converter device. According to the power flow calculation algorithm, a parameter design strategy of the bidirectional converter device based on the improved brute force search algorithm is proposed, which considers the splitting of each traction substation (TS). In the iteration, to obtain the limit solution set, the capacity, droop rate and no-load voltage are divided into three layers, and the results are based on the simulation without considering the capacity constraint of the bidirectional converter device. The actual case is studied. After considering the capacity constraint of the bidirectional converter device, the peak output power of TS is controlled, and the adjacent TSs can provide power support. The search number of the proposed strategy is 1.63% of the traditional brute force algorithm. In the example case, the train is 6B marshalling with the maximum speed of 80km/h, and the minimum capacity of the bidirectional current converter in the limit solution set is 7MW.

Key words： Bidirectional converter device parameter designing enhanced brute force capacity constraint

收稿日期: 2021-03-30

PACS:

U231+.8

基金资助:国家自然科学基金资助项目（51607148）

通讯作者: 刘炜男,1982年生,副教授,博士生导师,研究方向为城市轨道牵引供电与杂散电流。E-mail: liuwei_8208@swjtu.cn

作者简介: 张戬男,1995年生,博士研究生,研究方向为城市轨道柔性牵引供电。E-mail: zhangjian95@foxmail.com

引用本文:

张戬, 刘炜, 潘卫国, 张浩, 谢伟, 葛洲. 基于改进暴力搜索算法的全双向变流供电系统参数设计[J]. 电工技术学报, 2021, 36(23): 4896-4904. Zhang Jian, Liu Wei, Pan Weiguo, Zhang Hao, Xie Wei, Ge Zhou. Parameter Designing in Power Supply System with Bidirectional Converter Devices as Only Converters Based on Enhanced Brute Force Algorithm. Transactions of China Electrotechnical Society, 2021, 36(23): 4896-4904.

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