Investigation of the operating strategies of remotely connected embedded generators to help regulating local network voltage

The continued interest in the exploitation of renewable energy sources in recent years has led to the growth of number of embedded generators (EGs) connected to distribution networks. Previous investigations have shown that such generators can adversely affect the process of voltage control due to interference to the performance of associated AVC relays. When an EG is connected at the remote end of a lightly loaded feeder, it causes the weakening and under certain circumstances even diminishing the ability of the source substation AVC relay to control voltage magnitude in the network local to EG. This paper investigates the operating strategies of such EGs which would help the AVC relay with negative reactance compounding to maintain local network voltage within the statutory limits