Local voltage control in distribution networks using PI control of active and reactive power

Overvoltage is becoming increasingly prevalent in distribution networks with high penetration of renewable distributed energy sources (DERs). Local control converter-based resources a flexible and scalable method to prevent this growing issue. Reactive power used for voltage many local schemes. However, the typical range R/X ratios lines indicates that mitigation overvoltage often requires excessive amounts reactive power. Complete reliance on thus limits effectiveness strategies. In work we instead propose combines enhanced factor upper limit tracking using PI control. We develop modelling framework demonstrate stability proposed method. then simulate nonlinear operation two parallel controllers medium test system. • A DERs proposed. Adjustments active injections controllers. System conditions are derived analytically. Iterated load flow simulations system confirm performance.