摘要
抽水蓄能作为技术发展较为成熟的储能形式,主要参与系统的调峰、调频、调相等运行。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IEEE39节点系统为例,通过MATLAB仿真,采用提出的鲁棒控制对抽水蓄能机组参与电网调频加以控制,能够有效地对大规模光伏并网带来的出力波动造成的系统频率偏差变化进行调节,验证了模型的有效性及可行性。
Pumped storage,as a mature type of energy storage technology,mainly participates in peak shaving,frequency modulation and phase modulation of the system.The research studied the way the pumped storage power station participating in frequency modulation operation in large-scale photovoltaic power system.It considered both the economics of thermal power generation and the system deviation adjustment rate firstly.Then,an objective function was established by comprehensively considering to maximize 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,the upper and lower limits of storage capacity and the upper and lower limits of unit output were considered comprehensively.Robust control was 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 was established.Finally,IEEE39 bus system was taken as an example.Through MATLAB simulation,the proposed robust control method was used to control the frequency modulation of pumped storage units,which could effectively adjust the system frequency deviation caused by the output fluctuation caused by large-scale photovoltaic grid connection.The results verify the effectiveness and feasibility of the proposed model.
作者
毛李帆
龚若飞
陈煌
姜文
李聪
MAO Li-fan;GONG Ruo-fei;CHEN Huang;JIANG Wen;LI Cong(Dispatch Control Center of Hainan Power Grid Co. , Ltd. , Haikou 570203,China;Tellhow Software Co. , Ltd. , Nanchang 330096, China)
出处
《科学技术与工程》
北大核心
2020年第32期13235-13239,共5页
Science Technology and Engineering
关键词
电网调频
光伏发电
抽水蓄能
自动发电量控制(AGC)
carbon trading
photovoltaic power generation
pumped storage
automatic generation control(AGC)
