Voltage Regulation and Loss Minimization in Distribution Network with Renewable Generation using Smart-Inverters

摘要

Usage of renewable energy resources has always been a topic of great interest in the world of power, but high penetration of distributed generation (DG) into the distribution system may degrade the quality of the power system. The intermittent nature of distributed generation can lead to the voltage sags and swells. These negative effects can be mitigated if we can properly manage the reactive power in the system. Because of their slow response characteristics, the present reactive power compensation equipment installed in the power system cannot compensate the rapid power fluctuations of the renewable generators. Therefore, there is a requirement for the development of smart inverters to mitigate these negative effects. By absorbing or injecting the reactive power to the grid these inverters help in reducing the thermal losses and voltage violations of the system. The main goal of this paper is to show these beneficial effects on voltage and losses when the reactive power control using smart inverters is introduce to the distribution system. Numerical experiments are conducted to show the effectiveness of the smart inverters in voltage regulation and loss reduction.