Voltage Estimation Method for Distribution Network Based on Wiener Filter

In the process of collecting data from various measurement instruments in distribution networks, they are often vulnerable to various external or internal interferences, resulting in a certain degree of noise in the measured data. This leads to distortion in the calculation of the effective voltage. To address this issue, this paper proposes a voltage estimation method for distribution networks based on Wiener filtering, which effectively filters out the influence of various types of noise. Firstly, the voltage estimation time series model of distribution networks is introduced. Then the basic method and calculation steps of Wiener filtering are presented. The Wiener filter is a popular method for signal processing as it is known for its ability to reduce noise in a signal with minimum distortion of the original signal. Finally, three different types of cases are simulated to validate the proposed method, showing that it meets the accuracy requirements for voltage estimation in distribution networks.