Optimal Reactive Power Compensation Configuration in Distribution Power System Integrated with Small Hydro Power Plant

Abstract

Hydropower is the most widely used renewable energy for electricity generation in China, and small hydro power plant (SHPP) is a flexible way of electricity generation in water-rich remote area. Voltage at the end of distribution network may be increased over the acceptable range due to the connection of SHPPs. Magnetic control reactor (MCR) is usually used to reduce the voltage by consuming reactive power. A mathematical model for calculation of the optimal capacity of MCR is proposed in this paper, and particle swarm optimization (PSO) is adopted to solve the optimization problem. Two cases based on the IEEE 33-bus test system are used to validate the proposed method. In the given cases, system voltage is adjusted to the acceptable range.

Analysis of the overvoltage cooperative control strategy for the small hydropower distribution network

“…[18,19], the overvoltage of the SHP isolated network, the power supply, and the region entering the flood season were theoretically analyzed. Ma et al [20] proposed the application of series capacitor compensation technology to solve the problem of voltage failure by analyzing the series compensation principle. Shi [21] presented a method for calculating the optimal acceptance capacity of runoff SHP considering that the adaptive reactive power control is proposed for the problem of overvoltage limit of access point.…”