Research on the Calculation Method of Low Voltage User’s Loop Impedance Based on Binary Linear Regression Model

The calculation of the line impedance in power distribution area is of great significance in the line loss diagnosis, the evaluation of the line health status, and the optimization of maintenance work. However, the research on the calculation of the loop impedance in the power distribution area has not been thorough enough. The existing power flow method and the symmetric component method require too much user measurement data, and the available information is insufficient to support these methods. Therefore, based on the operability and practicability, considering the existing power distribution system construction status, this paper research the user circuit topology and equivalent circuit model of the power distribution area, deduces and establishes the station circuit impedance expression, and optimize the loop impedance model from the power stability aspect. By recording and filtering user-side power consumption data, By introducing hypothesis testing conditions, then take binary linear regression model to calculate the user’s loop impedance, and exemplifying the validity of the studied method.