应用于光纤的高压隔离开关状态识别技术

High-voltage disconnector status recognition technology applied to optical fiber

为了解决传统高压隔离开关状态检测方法中无法直接获取分合闸状态的问题,设计了一种应用于光纤的高压隔离开关角度测量传感器,通过最小二乘法,对传感器的输入输出特性曲线进行拟合,采用曲线拟合法进行非线性补偿,以降低传感器的非线性误差。并建立了基于二元回归分析的温度补偿模型对传感器进行温度补偿。实验结果表明:采用曲线拟合法进行非线性补偿后,传感器的非线性误差从15.7%降至5.7%。进行温度补偿后的零位温度系数降低了近3倍,灵敏度温度系数降低了9倍以上,相对误差降低了4.52个百分点,且传感器的平均绝对误差为0.49%,满足设计需求。

In order to solve the problem that the opening and closing state cannot be directly obtained in the traditional high-voltage disconnector state detection method,a high-voltage disconnector angle measurement sensor applied to optical fiber is designed.The input and output characteristic curves of the sensor are fitted by the least squares method,and the curve fitting method is used for nonlinear compensation to reduce the nonlinear error of the sensor.A temperature compensation model based on binary regression analysis is established for temperature compensation.The experimental results show that the nonlinear error of the sensor is reduced from 15.7%to 5.7%after nonlinear compensation by using the curve fitting method.After temperature compensation,the zero temperature coefficient is reduced by nearly 3 times,the sensitivity temperature coefficient is reduced by more than 9 times,the relative error is reduced by 4.52 percentage points,and the average absolute error of the sensor is 0.49%,which meet the design needs.