智能配电网故障后自愈能力评估研究  

Research on the Evaluation of Self-healing Capability in Smart Distribution Grid After a Fault

作　　者：徐广开 XU Guangkai(Changshu County Electric Power Supply Company,State Grid Jiangsu Electric Power Company Limited,Changshu 215500,China)

机构地区：[1]国网江苏省电力有限公司常熟市供电分公司,江苏常熟215500

出　　处：《科技创新与生产力》2024年第6期75-77,81,共4页Sci-tech Innovation and Productivity

摘　　要：针对对智能配电网在故障后自愈能力进行评估的问题,本文设计了一种以自愈能力关键指标为评估标准的指标自愈能力评判法。首先,在考虑需求侧管理与配电网自动化水平的基础上,建立了衡量智能配电网自愈能力的指标。其次,以故障遍历为验证方法,对配电网各区段故障后的恢复过程进行仿真。再次,根据所提指标对智能配电网自愈能力进行评估,从而获得自愈薄弱区段与薄弱时段,以故障概率作为检验自愈能力的权重,以此计算故障后配电系统的自愈能力。最后,搭建配电系统的数字仿真模型,配电系统被划分为10个区段,依次进行验证,证明了所提评估指标的正确性和可行性。将供电区段故障概率作为该区段的自愈能力水平的权重,进而计算得到全系统自愈能力水平。对含10个区段的配电系统进行数字仿真验证,证明了所提出评估指标和评估方法的有效性。Aiming at the problem to assess the self-healing capability of smart distribution grid after a fault,an index self-healing ability judgement method is designed with the key indexes of self-healing ability as the assessment criteria.Firstly,based on the consideration of demand-side management and distribution grid automation level,the indexes to measure the self-healing capability of smart distribution grid are established.Then,fault traversal is used as a validation method to simulate the recovery process after faults in each section of the distribution grid.Further,the self-healing capability of smart distribution grid is evaluated according to the proposed indexes,so as to obtain the self-healing weak segments and weak time periods,and the self-healing capability of the distribution system is calculated after a fault by using the probability of faults as the weight of testing the self-healing capability.Finally,a digital simulation model of the distribution system is constructed,and the distribution system is divided into 10 zones,which are verified sequentially to prove the correctness and feasibility of the proposed evaluation indexes.The probability of failure of a power supply zone is used as the weight of the self-healing capability level of the zone to calculate the system-wide self-healing capability level.A digital simulation of the distribution system with 10 zones is carried out to prove the validity of the proposed evaluation indexes and evaluation methods.

关 键 词：智能配电网 评估指标 评估方法 自愈控制 供电恢复 

分 类 号：TM727[电气工程—电力系统及自动化] TM762