Total Harmonic Distortion Calculation in Modified Feeder Distribution System

With the growing demand for electric power, it is becoming necessary to ensure a continuous supply in both low and high-voltage distribution systems. Distribution systems integrated with modern distributed generation (renewable energy resources) enhance power reliability and comply with carbon emission policies worldwide. These policies benefit society by reducing greenhouse gases, promoting clean air, and encouraging sustainable practices and technologies. Flexible AC transmission systems devices like static VAR compensators are used to mitigate transmission power quality issues, while custom power devices like dynamic voltage restorers and distribution static synchronous compensators are used to address distribution-level problems. In this research article, a Photovoltaic (PV) with Distribution Static Synchronous Compensator (PV D-STATCOM) is employed, to enhance voltage stability, improve power quality, reduce power fluctuations in distribution feeder systems, and support grid reliability by providing reactive power compensation and dynamic voltage control. It reduces losses by injecting reactive power (Q) and active power (P) and measures total harmonic distortion (THD). The PSCAD/EMTDC software is used for modeling and IEEE-13 node test feeder systems is taken for multiple case scenarios.