Voltage and reactive power control method for distribution grid

Reactive power optimization configuration includes two aspects: the choice of the reactive power compensation point and the reactive power compensation capacity. If these can be determined reasonably, voltage quality and system voltage stability can be effectively improved. This can also reduce network losses and improve power supply economics by avoiding long distance transportation of a mass of reactive power. In this paper, the method of OpenDSS AutoAdd function is used to determine the location of installation of capacitor banks. Taking the changes in distribution network into account, the nodes in load IEEE-33 bus system are classified in accordance with classification of load sizes. We combine power flow calculation and changing loads in the scripts to obtain the reactive compensation capacity. Through the calculation, each node voltage is raised and network losses can be significantly reduced. It shows that the proposed method is effective.