Distributed Newton‐based voltage control method for high‐penetration PV generation cluster in active distribution networks
Zhongguan Wang, Leijiao Ge, Jinjin Ding, Wei-de Gu
Abstract
Renewable energy generation exhibits a distributed development trend, and has changed the way distribution networks operated. Due to the integration of large‐scale distributed photovoltaic (PV) generation cluster and the access of electronic devices, distribution networks are suffering from more and more serious voltage risks. By using appropriate methods, PV inverters can autonomously regulate reactive power output in a distributed manner to improve voltage profile in networks. In this paper, a distributed Newton‐based voltage control method for large‐scale PV generation cluster in distribution networks is presented to realize distributed coordination of PV inverters, which is based on matrix splitting and approximate Newton iteration, and can fast respond to reactive power mismatch and realize voltage profiles optimization. Exhibiting a more efficient, reliable and flexible performance than existing decentralized methods in IEEE test systems with different PV penetration, the proposed method is demonstrated to be effectively to organize and control PV cluster to realize fast voltage optimization in distribution networks.