基于鲁棒控制的光伏并网系统中抽水蓄能参与电网调频控制策略

抽水蓄能作为技术发展较为成熟的储能型式,主要参与系统的调峰、调频、调相等运行。本文针对抽水蓄能电站参与含大规模光伏电力系统中的调频运行进行研究,同时兼顾了火力发电的经济性与系统偏差调节速率,建立以综合考虑最大限度发挥抽水蓄能电站调节能力以及快速实现区域控制偏差为目标函数,以库容上下限、机组出力上下限等为约束条件的决策模型。同时提出将鲁棒控制应用于抽水蓄能参与电网调频的应用控制中,建立了火电-抽蓄联合调节的发电控制系统模型。最后,以以IEEE39节点系统为例,通过matlab仿真验证了本文提出的模型的有效性及可行性。

Research on AGC Control Strategy of Pumped Storage Participating in Grid Frequency Modulation in Photovoltaic Grid-connected System Composites

Pumped storage, as a mature type of energy storage technology, mainly participates in peak shaving, frequency modulation and phase modulation of the system. Aiming at the research of Pumped Storage Power Station participating in frequency modulation operation in large-scale photovoltaic power system, this paper establishes the objective of playing an important role to the regulation capacity of pumped storage power station, limiting the output of thermal power, realizing the adjustment of regional control deviation to zero quickly, and taking into account the economic target of thermal power and coal consumption and the shortest adjustment time of the system. The decision-making model of constraints treatment for practical problems such as storage capacity and unit output restriction is considered comprehensively. Robust control is applied to the application of pumped storage in power grid frequency modulation control. A power generation control system model of photovoltaic power generation disturbance and combined regulation of thermal power and pumped storage is established. The validity and feasibility of the proposed model are verified by MATLAB simulation.