Distributed energy voltage cooperative control strategy based on multi-station fusion system

摘要

In recent years, distributed energy sources have been connected to the power system, and in the future there will certainly be a high penetration of distributed power sources in the power system. The randomness of new energy sources combined with the uncertainty of loads will bring great challenges to the stable operation of multi-station fusion systems. Effective voltage control techniques can improve voltage quality while meeting the premise of system operational safety and reliability. The impact of distributed energy on the reactive voltage control of multi-station fusion systems is analysed. The increase in active and reactive power generated by wind farms will lead to an increase in voltage at the grid connection and when the power generated by wind farms fluctuates, the voltage of the system will also fluctuate. The presence of distributed photovoltaics makes it possible for the voltage at the customer’s end to be higher than the voltage at the distribution transformer. The various devices used for reactive voltage regulation are described and their advantages and disadvantages are compared, as well as the modes of reactive voltage control. Finally, the optimal control of reactive voltages and the impact of energy storage and charging vehicles on multi-station convergence systems are presented. Finally, this paper simulates and analyzes the control effect of STATCOM for multi-station fusion system.