The statistical operators of partial discharge, namely fingerprint parameters, are important parameters of PD, which can be used to estimate PD condition of insulation.
局部放电的统计参量，即指纹参量是评定绝缘放电状态的重要参量。
Kalman filter in mathematics is a statistical estimation methods, By a series of errors with the actual measurement data and the physical parameters of the best estimate.
卡尔曼滤波在数学上是一种统计估算方法，通过处理一系列带有误差的实际量测数据而得到的物理参数的最佳估算。
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