微型电脑应用

针对故障定位基础数据存在异常值，导致故障研判定位时间较长、准确率较低的问题，提出基于图模型的配电系统抢修预案综合研判方法。利用统计量，检验抢修数据正常样本和实测样本的差异程度，聚类样本数据为多个簇，将与聚类中心差异最大的数据作为异常值，过滤后得到修正数据集，根据跳闸开关等数据，综合研判配电系统故障类别，计算不同类别开关量信息，将信息存在变化的区间视为故障区域，根据区域内设备电流信息熵值，定位故障点，标记在故障传播图模型上，直观展示抢修预案综合研判结果。以某地区实际配电系统抢修预案为例，进行实例测试，其预案包括主线停运、支线停运、台区停运、单户停运故障类别，测试结果表明，该方法缩短了故障研判定位时间，提高了故障研判定位准确率，配电系统抢修预案反馈更加及时可靠。

Aiming at the problem that there are abnormal values in the basic data of fault location, resulting in long time and low accuracy of fault location, a comprehensive research and judgment method of distribution system emergency repair plan based on graph model is proposed. The statistics are used to test the difference between normal samples and measured samples of emergency repair data. The cluster sample data are multiple clusters, and the data with the largest difference from the cluster center are taken as the abnormal value. After filtering, a modified data set is obtained. According to the trip switch and other data, the fault category of distribution system is comprehensively studied and judged, and the switching value information of different categories is calculated, the interval where the information changes is treated as the fault area, the fault point is located according to the equipment current information entropy in the area, and is marked on the fault propagation diagram model, and the comprehensive research and judgment results of the emergency repair plan are visually displayed. Taking the actual distribution system emergency repair plan in an area as an example, the example test is carried out. The plan includes the fault categories of main line outage, branch line outage, station area outage and single household outage. The test results show that this method shortens the fault diagnosis and positioning time, improves the fault diagnosis and positioning accuracy, and the feedback of distribution system emergency repair plan is timelier and more reliable.