Power transmission line parameter online identification method and system based on PMU error correction

• Main Authors: YU JUAN, LEI JIANGLONG, CHANG GUANGHUI, XIANG MINGXU, GONG CANFENG, ZHANG JIANGNAN, YANG ZHIFANG, SONG YANLOU, ZHOU NING, RUAN CHONG, WU PO, WANG DAN, REN PENGLING, HE YONG, SUN LEIMING
• Format: Patent
• Language: Chinese; English
• Published: 13.05.2022
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The invention discloses a power transmission line parameter online identification method and system based on PMU error correction. The method comprises the following steps: firstly, according to error types and corresponding characteristics of measurement data, pre-processing PMU data in a classified manner; then, aiming at a bias error which is difficult to perceive, a PMU measurement error correction method considering a data rule and an error sensitivity characteristic is provided based on a power transmission line centralized equivalent model; finally, on the basis of the above correction method, a whole station PMU data quality treatment scheme is provided. Simulation is carried out through simulation and actual measurement data, and the result shows that compared with an existing method, the method can improve the actual data quality of the PMU, and then effective identification of the power transmission line parameters is achieved. 基于PMU误差校正的输电线路参数在线辨识方法及系统。首先，根据误差类型及测量数据的相应特点，分类型对PMU数据进行预处理。然后，针对难以觉察的