宁夏电力Issue(1)：58-66,9.DOI:10.3969/j.issn.1672-3643.2025.01.008
基于高频阻抗的断路器合闸电阻损伤时阻抗参数仿真研究
Simulation study on impedance parameters of circuit breaker closing resistance damage based on high-frequency impedance
摘要
Abstract
Pre-insertion resistors are an important component of circuit breakers,playing a protective role by suppres-sing operating overvoltage and closing inrush currents.However,they experience a high failure rate during operation.This study calculates the electrical parameters based on the structural design of the pre-insertion resistors and constructs a simulation model for the equivalent impedance parameters of the circuit breaker's closing resistance,using an RLC circuit as the basic unit.The study explores the variation in the closing resistance impedance parameters under different damage conditions.The results show that for closing resistors with damages such as blackening,burning,cracking,and edge detachment,the high-frequency impedance characteristic curves exhibit clear differences compared to the normal resistance curve.These results validate the feasibility of using high-frequency impedance technology for diagnosing dam-age to the closing resistors.This research provides valuable insights for the future development and optimization of dam-age detection systems for circuit breaker pre-insertion resistors based on high-frequency impedance.关键词
断路器/PIR/等效电路模型/高频阻抗/损伤诊断Key words
circuit breakers/PIR/equivalent circuit model/high-frequency impedance/damage diagnosis分类
动力与电气工程引用本文复制引用
牛勃,戴龙成,殷聆钧,韩旭涛,马飞越,孙尚鹏..基于高频阻抗的断路器合闸电阻损伤时阻抗参数仿真研究[J].宁夏电力,2025,(1):58-66,9.基金项目
国网宁夏电力有限公司科学技术项目(5229DK24000S) （5229DK24000S）
