一种适用于黑启动的光储联合发电系统协调控制策略

发布时间：2018-07-10 00:33

本文选题：光储联合发电系统 + 协调控制　；参考：《电网技术》2017年09期

【摘要】：为研究光储联合发电系统的黑启动能力,采用孤岛运行条件下光储系统启动厂用异步电动机的方法模拟电网黑启动过程,建立了光储联合发电系统模型及其控制系统。选择储能作为主电源,采用恒压恒频控制平抑光伏系统出力波动,为系统提供电压与频率支撑。考虑到因储能剩余充电容量不足将引起黑启动失败的情况,基于常规MPPT(maximum power point tracking)算法,提出一种负荷跟踪与MPPT相结合的方法,使光伏系统出力充足时有效跟踪负荷变化,无多余功率向储能充电;出力不足时实现最大功率跟踪,联合储能共同为负荷供电,从而减小所需储能容量。仿真结果验证了所提协调控制策略的可行性和有效性,同时验证了光储联合发电系统能够为大电网的恢复提供黑启动电源,具备快速黑启动能力。
[Abstract]:In order to study the black-start ability of the optical storage combined generation system, the induction motor used in the optical storage system start-up plant is used to simulate the black-start process of the power grid under the condition of isolated island operation, and the model of the optical storage combined generation system and its control system are established. The energy storage is chosen as the main power supply and constant voltage and constant frequency are used to control the force fluctuation of photovoltaic system to provide voltage and frequency support for the system. Considering the failure of black-start due to insufficient residual charge capacity of storage energy, based on the conventional MPPT (maximum power point tracking) algorithm, a method of combining load tracking with MPPT is proposed, which can effectively track the load change when the PV system has sufficient output. No superfluous power is charged to energy storage, and the maximum power tracking is realized when the output is insufficient, and the combined energy storage supplies the load together, thus reducing the required energy storage capacity. The simulation results verify the feasibility and effectiveness of the proposed coordinated control strategy and verify that the optical storage combined generation system can provide black start power for the restoration of large power grid and has the ability of fast black start.
【作者单位】：华北电力大学电气与电子工程学院;国网沧州供电分公司;
【基金】：国家自然科学基金(51607069) 河北省自然科学基金(E2015502012) 中央高校基本科研业务费专项基金资助(2016MS88,2017MS091)~~
【分类号】：TM73

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