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.
关键词
高压隔离开关/反射式光纤角度传感器/最小二乘法/曲线拟合
Key words
high voltage disconnector/reflective fiber-optic angle sensor/least squares method/curve fitting
维普
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