单相接地故障辅助研判方法在配电自动化数据分析中的应用

Ancillary Diagnostic Method for Single-phase Ground Fault Based on Analysis of Data from Distribution Automation System

单相接地故障是配电网络中最常见的故障类型之一,其准确快速地定位对于提高电网的可靠性和供电质量具有重要意义。随着配电自动化技术的发展,大量的数据被采集和存储,为故障分析提供了丰富的信息资源。本文介绍了一种单相接地故障辅助研判方法在配电自动化数据分析中的应用。首先,将介绍接地故障的定位原理,包括故障时负荷数据获取、故障前负荷数据获取以及零序电流获取等内容。然后,将详细阐述辅助研判程序,包括数据清洗和辅助研判的具体步骤。最后,将通过两个实际的技术应用案例来展示单相接地故障辅助研判方法在配电自动化数据分析中的应用效果。结果表明,该方法能够有效利用配电自动化系统中的数据,提高单相接地故障的识别和定位准确率,为电网运维提供技术支持。

Single-phase ground fault is one of the most common fault types in distribution networks,and its accurate and rapid localization is crucial for improving the reliability and power supply quality of the power grid.With the development of distribution automation technology,a large amount of data is collected and stored,providing rich information resources for fault analysis.This paper introduces an auxiliary analysis method for single-phase ground faults applied in the data analysis of distribution automation.Firstly,the principles of fault localization are presented,including the acquisition of load data during faults,pre-fault load data acquisition,and zero-sequence current acquisition.Then,the auxiliary analysis procedure,including data cleaning and specific steps of auxiliary analysis,is detailed.Finally,the application effectiveness of the single-phase ground fault auxiliary analysis method in distribution automation data analysis is demonstrated through two practical technical cases.The results indicate that this method effectively utilizes data in distribution automation systems,improves the accuracy of identification and localization of single-phase ground faults,and provides technical support for power grid operation and maintenance.