CAJ | 학술논문

提出一种基于聚类分析的配电网无整定保护方法，采集被保护馈线在不同运行条件下的故障信息，提取多种故障特征量，组成历史特征样本集；借助聚类分析算法将历史特征样本集划分为故障类与非故障类，并得到相应的聚类中心；实时监测被保护馈线运行状态，通过计算实时特征样本与聚类中心的空间距离对实时特征样本的属性进行判别，从而实现保护判断。仿真结果表明，该方法无需设置保护整定值，不受系统运行方式与过渡电阻大小的影响，对于不同故障条件下的接地故障均能实现准确判断。
제출일충기우취류분석적배전망무정정보호방법，채집피보호궤선재불동운행조건하적고장신식，제취다충고장특정량，조성역사특정양본집；차조취류분석산법장역사특정양본집화분위고장류여비고장류，병득도상응적취류중심；실시감측피보호궤선운행상태，통과계산실시특정양본여취류중심적공간거리대실시특정양본적속성진행판별，종이실현보호판단。방진결과표명，해방법무수설치보호정정치，불수계통운행방식여과도전조대소적영향，대우불동고장조건하적접지고장균능실현준학판단。
A novel non-setting protection method for distribution systems fault based on clustering analysis is proposed in this paper.The fault information of the protected feeder under different operating state is extracted to construct the historical feature sample set.The historical feature samples are divided into fault group and non-fault group by clustering algorithm and the cluster centers are obtained.By comparing the distances between the real-time feature sample and the cluster centers,the attribution of the real-time feature sample is obtained as well as the protec-tion result.The simulation result indicates that the non-setting protection method can realize the protection without the setting value.And the impacts of operating state and transition resistance can be neglected.