电器与能效管理技术 ›› 2025, Vol. 0 ›› Issue (1): 6-13.doi: 10.16628/j.cnki.2095-8188.2025.01.002

• 研究与分析 • 上一篇    下一篇

基于燃弧能量估计的低压断路器寿命预测方法

徐佳宁1, 杨皓文1, 高偲智1, 陈思磊2, 李兴文1   

  1. 1.西安交通大学 电工材料电气绝缘全国重点实验室, 陕西 西安 710049
    2.西安理工大学 电气工程学院, 陕西 西安 710048
  • 收稿日期:2024-09-15 出版日期:2025-01-30 发布日期:2025-03-17
  • 作者简介:徐佳宁(2000—),女,硕士研究生,研究方向为低压电器的可靠性与寿命预测。|杨皓文(2001—),男,硕士研究生,研究方向为电力设备在线监测与故障诊断。|高偲智(1999—),男,博士研究生,研究方向为低压直流开断新技术及其可靠性。
  • 基金资助:
    陕西省科技计划项目(2022TD-59)

Life Prediction Method of Low Voltage Circuit Breaker Based on Arc Energy Estimation

XU Jianing1, YANG Haowen1, GAO Caizhi1, CHEN Silei2, LI Xingwen1   

  1. 1. The State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710049, China
    2. School of Electrical Engineering, Xi’an University of Technology, Xi’an 710048, China
  • Received:2024-09-15 Online:2025-01-30 Published:2025-03-17

摘要:

低压断路器的寿命预测有利于保障电力系统的安全稳定运行。当前低压断路器寿命预测方法依赖于触头质量、振动等数据的测量和分析,而数据的获取成本过高且处理过程复杂。为此,提出一种基于燃弧能量估计的低压断路器寿命预测方法。首先,采集时间信号和电信号,计算单次燃弧时间和单次燃弧能量映射数据集,并分析两者的相关性;其次,建立拟合函数估计累计燃弧能量,构建剩余电寿命预测模型;最后,利用某塑壳断路器(MCCB)寿命试验数据进行验证。结果表明,所提模型可取得较为理想的寿命预测准确度,为低压断路器的寿命预测提供理论与实践依据。

关键词: 寿命预测, 低压断路器, 燃弧能量, 函数拟合

Abstract:

Predicting the remaining life of low voltage circuit breakers is crucial for ensuring the safety and stability of power systems.The current life prediction methods rely on the measurement and analysis of data such as contact mass and vibrations, which involve high costs and complex processing.In response to this, a life prediction method for low voltage circuit breakers based on arc energy estimation is proposed.Initially, the time and electrical signals are collected to compute a dataset of single arc duration and single arc energy, and their correlation is analyzed.Subsequently, a fitting function is established to estimate the accumulated arc energy, which is used to construct a remaining electrical life prediction model.Finally, the validation using the life test data from a specific molded case circuit breaker (MCCB) demonstrates that the model achieves a satisfactory level of prediction accuracy.The proposed method provides the theoretical and practical foundations for the life prediction of low voltage circuit breakers.

Key words: life prediction, low voltage circuit breaker, arc energy, function fitting

中图分类号: