考虑多无功源的光伏电站两阶段无功电压协调控制策略

发布时间：2018-05-31 15:14

本文选题：光伏电站 + 公共连接点　；参考：《电力系统自动化》2017年11期

【摘要】：在综合考虑各种无功源调节性能基础上,提出了一种综合利用静止无功发生器、光伏逆变器和电容器组的光伏电站无功电压协调控制策略,其包含两个控制阶段:第一阶段为考虑多无功源的协调电压控制,最大化利用站内无功源,在减少电容器组投切次数的同时,快速响应系统无功变化,维持公共连接点电压稳定;第二阶段为动态无功优化控制,利用动态无功(静止无功发生器)与静态无功(电容器组)、快速无功(静止无功发生器)与慢速无功(光伏逆变器)的无功代替,使静止无功发生器保留足够的无功裕度,提高电网应对电压崩溃的能力。最后,将所提出的无功电压控制策略应用到实际光伏电站中,验证了该策略的有效性。
[Abstract]:On the basis of considering the regulation performance of various reactive power sources, a coordinated control strategy for the reactive power and voltage of photovoltaic power plants using static Var Generator, Photovoltaic Inverter and Capacitor Bank is proposed. It consists of two control stages: the first stage is to consider the coordinated voltage control of multiple reactive power sources, maximize the use of the reactive power sources in the station, reduce the switching times of the capacitor banks, and quickly respond to the reactive power changes of the system. Maintain the voltage stability of common connection point, the second stage is dynamic reactive power optimal control, By using the reactive power substitution of dynamic reactive power (static var generator) and static reactive power (capacitor bank), fast reactive power (static var generator) and slow reactive power (photovoltaic inverter), the static var generator retains sufficient reactive power margin. Improve the power grid's ability to cope with voltage collapse. Finally, the proposed reactive power and voltage control strategy is applied to the actual photovoltaic power plant to verify the effectiveness of the strategy.
【作者单位】：南瑞集团公司(国网电力科学研究院);国电南瑞南京控制系统有限公司;
【分类号】：TM615

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