Monitoring and Analysis of Power Quality Issues in Distribution Network—A Case Study

Abstract

Tracking of system’s overall performance in phrases of Power Quality disturbances and its ill effects on distribution network is growing attention of application toward tracking of Power Quality indices like voltage sag, voltage swell, and harmonics. This paper introduces new index as Power Quality Distortion Index (DI) which offers the contribution of every load on the total distortion of the power system. The presented system set the basis of tracking and analysis of Power Quality indices for distribution network [1]. The characterization of Power Quality problems is found through non-widespread currents, voltages, and frequencies. The Power Quality is related to variations of supply voltage in the form of sags, swells, harmonics, transients, and so on. These issues result in deterioration of energy delivered to end customers, also various disturbances are generated. The loads used by consumers also account for deterioration of Power Quality. Penalties are charged for low power factor loads but at the same time negligence to sizable existence of Power Quality parameter issues like voltage sags and harmonic distortions. Introduction of Custom Power Devices (CPD) is an effective solution over Power Quality problems in distribution network [2]. This paper presents diverse Power Quality indices like Distortion Index as the computational parameter of Power Quality and design of Dynamic Voltage Restorer (DVR) to compensate voltage sag in the system. Effect of DVR on Distortion Index (DI) is also observed, and outcomes are analyzed with the assist of MATLAB/Simulink.