Title: A cross-regional joint operation control method of small power photovoltaic power grid and municipal power grid
Authors: Ke Qi
Addresses: School of Applied Technology, University of Science and Technology Liaoning, Anshan 114051, Liaoning Province, China
Abstract: Aiming at the problems of high-failure rate of transmission lines and large fluctuation of output waveform in traditional methods, a control method for cross-regional joint operation of low-power photovoltaic grid and municipal grid based on fuzzy logic control is designed. This method combines the overall topological structure of the power supply system and installs a protection circuit to reduce electricity costs. In the entire combined power supply system, the fuzzy logic control method is used to obtain the distance distribution function of the fault nodes in different areas of the power grid, and the effective control of the power grid is realised by adjusting the grid deviation coefficient. The results show that the failure rate of the transmission line is reduced from 6 to 3%, the output waveform fluctuates steadily and the grid operation status is relatively stable, which guarantees the safe operation of the grid.
Keywords: small power photovoltaic grid; municipal grid; joint operation control; fuzzy logic control; distance distribution function.
International Journal of Global Energy Issues, 2022 Vol.44 No.5/6, pp.511 - 523
Received: 14 Jan 2021
Accepted: 08 Aug 2021
Published online: 08 Sep 2022 *