高压电器2026，Vol.62Issue(8)：27-33,7.DOI:10.13296/j.1001-1609.hva.2026.08.004
基于振动信号的断路器刚分刚合点计算方法
Calculation Method of Contact Opening/Closing Moment of Circuit Breaker Based on Vibration Signals
李浩 1龙启 2杨旭 3王加磊 1邓劲东 4胡桂平 4梁洪章 5段雄英5
作者信息
- 1. 中国南方电网有限责任公司超高压输电公司昆明局,昆明 650217
- 2. 中国南方电网有限责任公司超高压输电公司,广州 510663
- 3. 中国南方电网超高压输电公司电力科研院,广州 510663
- 4. 南京南瑞继保电气有限公司,南京 211102
- 5. 大连理工大学电气工程学院,辽宁 大连 116024
- 折叠
摘要
Abstract
Aiming at the problem that the contact opening and closing moment of the circuit breaker can not be diret-ly monitored online in power system,in this paper a method for calculating these moments is proposed based on the composite analysis method of short-time energy and sound pressure.After collecting the vibration signal of the circuit breaker through the acceleration sensor,the sound pressure signal is firstly used to determine the area range of the in-stant opening and closing operation.Then,the contact openign and closing moments are accurately determined by the first intersection of the short-time energy and the preset threshold.The method effectively solves the problem that the traditional calculation method fails due to the differences in the operating mechanism,installation position and instal-lation method of sensor.In this study the off line measurement is performed in combination with a high-voltage switch tester,and the time coordinates is unified to obtain the accurate contact opening and closing moments as the experi-mental reference.The experimental results show that the calculation error is controlled within 1 ms,which verifies both accuracy and practicality of the method.The study in this paper not only provides an efficient and accurate calcu-lation method,but also a solution for optimization of the control performance of the phase-selection swiching device.关键词
高压交流SF6瓷柱断路器/在线监测/振动信号/短时能量/刚分刚合点/同步分合闸Key words
high-voltage AC SF6 live tank circuit breaker/on-line monitoring/vibration signals/short-time energy/contact opening and closing moment/synchronized opening and closing operation引用本文复制引用
李浩,龙启,杨旭,王加磊,邓劲东,胡桂平,梁洪章,段雄英..基于振动信号的断路器刚分刚合点计算方法[J].高压电器,2026,62(8):27-33,7.
