一种电容式电压互感器状态诊断方法
A State Diagnosis Method for Capacitive Voltage Transformers
谷斌 1胡庆春 1江晨玲1
作者信息
- 1. 深圳供电局有限公司,广东深圳 518000
- 折叠
摘要
电容式电压互感器因制造简单、质量小、体积小、成本低、运行可靠等优点,广泛应用于电力系统中,现有检查手段主要是周期性停电检查,然而停电检查周期在3 a左右,在此期间电压互感器若发生性能恶化却不能及时发现处理,会导致更为严重的后果.为解决该难题,文章提出了一种基于电压互感器二次电压曲线的诊断方法,通过该方法及时发现了27组电压互感器电容击穿的隐患,并通过一个220 kV站221PT曲线进行了说明.
Abstract
Capacitive voltage transformers are widely used in power systems due to their advantages of simple manufacturing,light weight,small size,low cost,and reliable operation.The existing inspection methods mainly include periodic power outage inspections.Then,the power outage inspection cycle was around 3 years,during which the performance of the voltage transformer deteriorated and could not be detected and dealt with in a timely manner,resulting in more serious consequences.To solve this problem,this article proposes a diagnostic method based on the secondary voltage curve of voltage transformers.Through this method,the hidden danger of 27 sets of voltage transformer capacitor breakdown was discovered in a timely manner,and explained through a 221PT curve of a 220 kV station.
关键词
电容式电压互感器/击穿/曲线/诊断Key words
capacitive voltage transformer/breakdown/curve/diagnosis引用本文复制引用
出版年
2024
NETL
NSTL
万方数据