Performance enhancement of custom power park

Abstract

Custom power park is an industrial/commercial park that integrates state-of-the-art power quality devices. The power quality devices can be classified into two catalogues: voltage quality enhancement devices and current quality enhancement devices. In order to meet the requirement of large capacity, high reliability, high flexibility in both the voltage and current compensation, several operation modes of multiple DVRs and multiple DSTATCOMs are proposed. Moreover, aiming at the negative interaction which may occur when DVR and DSTATCOM are installed on the same feeder, the paper analyzes the mechanism of the interaction with the harmonic impedance method. The stability problem may occur due to impedance parameter mismatch of two devices. Finally, the analysis results are verified by time domain simulation.