基于GIS缺陷模型的状态监测装置性能验证平台研究

Research on the Platform of State Monitoring Device Based on GIS Defect Model

针对不同厂家GIS局部放电检测设备确性、稳定性和可靠性存在较大差异的问题。本文设计了基于GIS实体缺陷模型,该模型模拟220kV电压等级的GIS母线腔体,设计了4类缺陷放电物理模型尖端缺陷、悬浮缺陷、气隙缺陷、颗粒缺陷,通过分析各种缺陷特性对局部放电量的影响,找出不同类型的稳定可控放电量的放电模型,并针对这四种放电模型,研究其在GIS环境内气压与视在放电量、视在放电量与UHF测试值、视在放电量与AE测试值间的关系,最后提出了一套基于GIS实体缺陷模型的状态监测装置性能评价方法,此方法为提升各类监测装置的准确性、稳定性和可靠性提供了重要的技术保证。

The GIS partial discharge detection devices from manufacturers are quite different in stability and reliability on these issues.In this paper,a physical defect model is designed for simulating the voltage level of 220 kV GIS bus cavity.The paper also design four discharge physical models:tip defect,suspension defect,gap defect and particle defect.By analyzing the impact of various defect characteristics of partial discharge and finding out the discharge model of different types of stable and controllable discharge capacity,and researching the relationship between apparent discharge magnitude,the ambient pressure of GIS,UHF test value and AE test values to four discharge physical models.which provides important technical assurance to enhance the accuracy,stability and reliability of various types of monitoring devices.