含分布式光伏发电的中压配电网电压控制策略

随着分布式光伏发电并网规模的不断扩大，由光伏发电功率与负荷之间不平衡引发的逆向潮流导致的电压越限问题日益受到关注。在光伏接入点的电压分析及无功/有功调压分析的基础上，提出了无功/有功协调控制策略，通过光伏逆变器的无功输出补偿及光伏发电量优化管理，实现配电网节点电压的控制。仿真分析结果表明，该策略能在兼顾光伏利用效率和经济性的同时，较好地解决含分布式光伏发电的配电网的电压越限问题。

Voltage control strategy for medium voltage distribution network with distributed photovoltaic generators

With the increasing scale of grid-connected distributed photovoltaic power generation system, the problem of voltage violation, which is resulted from the reverse power flow due to the imbalance between power and load, is a matter of great concern. On the basis of analyzing voltage and active / reactive voltage regulation of photovoltaic access points, the reactive / active coordinated control strategy is proposed. The node voltage is controlled through compensating the reactive output compensation of photovoltaic inverter and optimizing photovoltaic power generation. The simulation results show that the strategy can solve the problem of voltage violation in the distribution network of distributed photovoltaic generators while taking the efficiency and economy of photovoltaic utilization into account.