高压电器2017，Vol.53Issue(6)：147-153,7.DOI:10.13296/j.1001-1609.hva.2017.06.025
基于样条插值和线性拟合分析的高压断路器弹簧机构状态检测
Condition Detection of Spring Mechanism of High-voltage Circuit Breaker Based on Spline Interpolation and Linear Fitting Analysis
杨为 1柯艳国 2朱胜龙 1李宾宾 1陈忠 1赵常威 1宋东波 1杨海涛1
作者信息
- 1. 国网安徽省电力公司电力科学研究院,合肥230022
- 2. 国网安徽省电力公司,合肥230022
- 折叠
摘要
Abstract
In order to effectively detect the operation condition of high voltage circuit breaker based on spring mechanism,the typical current waveform of opening/closing coil is analyzed based on a characteristic extraction method of spline interpolation and multi-scale linear fitting.The method set the time and amplitude matched with the extreme point as the characteristic.The current waveform is firstly smoothed by the cubic splice interpolation,smoothed by the cubic splice interpolation.The signal is divided into several sections by a large scale.Each section is fitted by least square method,and the extreme points can be limited into typical intervals according to the trends of each section.Then the scale is reduced and the procedure would be repeated until the interval is small enough to determine the extreme points as the characteristic points.Finally,the method is applied to detect the mechanical condition of the real circuit breaker in a typical substation.The results have shown that the proposed method can extract the characteristics of opening/closing coil current rapidly and correctly,which can effectively detect the condition of circuit breaker.关键词
高压断路器/弹簧机构/状态监测/电流信号/样条插值/多尺度线性拟合Key words
high-voltage circuit breaker/spring mechanism/condition monitoring/current signal/spline interpolation/multi-scale linear fitting引用本文复制引用
杨为,柯艳国,朱胜龙,李宾宾,陈忠,赵常威,宋东波,杨海涛..基于样条插值和线性拟合分析的高压断路器弹簧机构状态检测[J].高压电器,2017,53(6):147-153,7.
