低压配电网中分布式光储系统的电压协调控制策略

Voltage Coordination Control Strategy for Distributed Optical Storage Systems in Low Voltage Distribution Networks

为解决低压配电网中分布式光储系统的电压越限问题,本文开展电压协调控制策略研究。首先,建立分布式光储系统并网模型。在此基础上,提出基于光伏逆变器剩余容量的电压控制策略、储能参与调压的控制策略和光伏逆变器与储能协调的电压控制策略。最后,结合三种控制策略,对其应用效果进行分析。分析得出,新的控制策略在实际应用中具备有效性,可以解决电压越限问题,提高低压配电网运行稳定性。

In order to solve the problem of voltage exceeding limits in distributed optical storage systems in low-voltage distribution networks,this paper conducts research on voltage coordination control strategies.Firstly,establish a distributed optical storage system grid connection model.On this basis,a voltage control strategy based on the remaining capacity of the photovoltaic inverter,a control strategy for energy storage participating in voltage regulation,and a voltage control strategy for coordinating the photovoltaic inverter and energy storage are proposed.Finally,analyze the application effects of three control strategies.Analysis shows that the new control strategy is effective in practical applications,which can solve the problem of voltage exceeding limits and improve the stability of low-voltage distribution network operation.