Event-Triggered Voltage Regulation for High-PV-Penetration Networks With Time Delays

Voltage is an imperative index for the successful operation of distribution networks. With a high penetration of photovoltaic, the intermittence can cause voltage violations that become severer especially during midday and nightfall periods. Coordinated power compensation has shown promising results in rapid voltage regulation while depending on communications. This article proposes a centralized event-triggered voltage regulation method incorporating the impacts of time delay. In order to makes all bus voltages acceptable, a sequential proportional power compensation is first proposed for invariable crucial bus. Then, an event-triggered mechanism is designed by considering multivariate changes under power fluctuations, thus reducing communication burden. Using a quantitative upper boundary obtained here, the impacts of time delays on steady-state regulation performance are fully analyzed. Finally, simulation on MATLAB is conducted to indicate the effectiveness of this method.