摘要
变电站故障会导致供电区内的配电网瘫痪,造成大面积失电。为此,提出一种考虑快速可拆卸变压器的变电站-配电网协同故障恢复方法。构建快速可拆卸变压器应用下的故障恢复框架,阐明变电站变压器的恢复机理;提出“运输—维修”二阶段恢复策略,涵盖快速可拆卸变压器、线路、小型配电变压器3类故障;计及网络重构,建立变电站-配电网故障恢复优化模型,利用广义Benders分解算法进行求解。基于改进的141节点配电网算例进行仿真,验证所提方法的有效性。仿真结果表明,所提方法能够有效缩短变电站-配电网系统故障恢复时间,提高负荷恢复率,且具有更高的求解效率。
The substation fault will lead to the paralysis of distribution network within the supply area,resulting in widespread power outage.Therefore,a substation-distribution network cooperative fault recovery method considering quickly-detachable transformer is proposed.A fault recovery framework under the application of quickly-detachable transformer is constructed,the recovery mechanism of transformer in the substation is elucidated.A“transport-repair”two-stage recovery strategy is proposed,which covers three types of faults of quickly-detachable transformer faults,line faults,and small distribution transformer faults.Considering the network reconfiguration,an optimization model for substation-distribution network fault recovery is established,and the generalized Benders decomposition algorithm is used for solution.The simulation is carried out based on a modified 141-node distribution network example to validate the effectiveness of the proposed method.The simulative results show that the proposed method can effectively shorten the fault recovery time of substation-distribution network system,improve the load recovery rate,and has higher solving efficiency.
作者
汪顺其
丁涛
丁玉杰
杨岳洋
赵焕蓓
赵东宁
WANG Shunqi;DING Tao;DING Yujie;YANG Yueyang;ZHAO Huanbei;ZHAO Dongning(School of Electrical Engineering,Xi’an Jiaotong University,Xi’an 710049,China;State Grid Qinghai Electric Power Research Institute,Xining 810000,China)
出处
《电力自动化设备》
北大核心
2025年第10期100-109,共10页
Electric Power Automation Equipment
基金
智能电网重大专项(2030)(2024ZD0802000)
国家电网公司科技项目(52280024000L)。
关键词
配电网
故障恢复
快速可拆卸变压器
线路维修
变电站
distribution network
fault recovery
quickly-detachable transformer
line repair
substation
