Analysis of Typical Power Quality Disturbance Sources in a Region and Application of Comprehensive Evaluation Methods

Based on the characteristics of power quality disturbance sources and the features of power grids and large-capacity loads in a certain region, this study tested and analyzed the types of typical power quality disturbance sources in the region, summarized the power quality exceedances caused by various disturbance sources in the regional grid, and proposed a comprehensive evaluation method for power quality based on the quantification of the short-board effect. An electrified railway was selected as a case study to conduct a comprehensive evaluation of power quality. This research provides references for power quality pricing, power quality management, and related decision-making.