Coordinated voltage control in the electrical distribution network with a source of distributed generation

Distributed generation sources affect the electric network work: voltage, frequency, relaying, etс. In order to not violate voltage valid values the distributed generation source should reduce its active power. The way to regulate voltage in the distribution electric network with distributed generation sources has been developed. It provides coordinated control of different types of regulation means based on the theory of sensitivity and makes it possible for distributed generation sources to regulate voltage at the connection node and can both reduce the system cost and increase the efficiency of the coordinated control of regulation means and distributed generation sources. Such an approach takes into account that the distributed generation source can regulate voltage and power factor in the connection node in the electrical distribution network. Synchronous compensator and regulated under voltage transformer are thought of as means for voltage regulation. In the case of distributed generation source operating in voltage regulation mode with synchronous compensators and regulated under voltage transformers the power losses are less than power losses in the distributed genera-tion source operating in power factor regulation mode. This is due to the fact that distributed generation source doesn't consume reactive power in voltage control mode. So, the proposed approach makes it possible to increase output active power of the distributed generation source and decrease operational costs of means for voltage control