Voltage Control Strategy of OLTC-Inverter in Distribution Transformer Area with High-proportion Residential Photovoltaics

However, the high penetration rate of residential PV grid connection will cause serious voltage overrun, and the coordinated control of PV inverter and OLTC can effectively solve the above problems. Aiming at the current situation that the coordinated control of inverter and OLTC in distribution station area is not studied enough, this paper proposes an OLTC and inverter coordinated control strategy and controller parameter optimization model. The OLTC-inverter voltage coordination control strategy is first proposed, and then the control parameters are optimally designed.