DOI: 10.11799/ce202601022
Research on an integrated current compensation method for power quality management in underground coal mines
HAO Sirui
BU Pengsheng
Abstract：To address poor power quality under complex operating conditions in underground coal mines,we investigate methods for detecting and compensating abnormal currents.The structural principles and functional characteristics of various types of second-order generalized integrators are analyzed in detail to achieve accurate current tracking and effective filtering.Furthermore,an integrated current compensation method is proposed.Based on the second-order generalized integrator structure for fundamental frequency filtering,the positive-sequence current component is extracted using the symmetric component method,and the active current component is extracted using the instantaneous power theory.The fundamental positive-sequence active component of the load current is then uniformly obtained,and the difference between the actual load current and this component is taken as the total compensation requirement,enabling integrated current detection and compensation.Simulation experiments under various non-ideal load conditions are conducted on the Simulink platform to verify the accuracy of the theoretical analysis.The results demonstrate that this method can achieve integrated detection and compensation of abnormal currents such as reactive power,harmonics,and imbalance,proving its feasibility for power quality management in complex underground coal mine environments.
Keywords：power quality managementsecond-order generalized integratorsymmetric component methodinstantaneous power theoryintegrated current compensation method
Publication Date：2026-01-20
Online Publishing Date：2026-03-10(First online date of this platform, not the publication date of the document)
Pages：6( 178-183 )