風電集群多時間尺度有功功率協(xié)調控制策略
發(fā)布時間：2018-08-05 11:20
【摘要】：風力發(fā)電作為技術成熟度最高、應用最廣泛的新能源發(fā)電方式,近年來得到了長足的發(fā)展。在規(guī)模風電并網難、消納難,以及“棄風”問題無法得到有效解決的背景下,建立風電集中預測、控制與調度中心,提高大型風電基地的可觀測性與可控性,優(yōu)化利用風能資源,是風電成為未來電網優(yōu)質電源的必經之路。因此,本文基于國家高技術研究發(fā)展計劃(863計劃)重大項目“風電場、光伏電站集群控制系統(tǒng)研究與開發(fā)”,結合甘肅酒泉地區(qū)風電集群運行管理的實際需要,就大規(guī)模風電集中并網有功功率協(xié)調控制問題展開了研究,具有一定的理論意義和應用價值。論文主要工作如下： (1)研究了計及規(guī)模風電的多時間尺度、分層分區(qū)相協(xié)調的調度策略。分析風電場的有功控制能力及其集中協(xié)調控制的必要性與可行性,提出將風電集群作為整體納入電網一體化分布協(xié)調控制,研究規(guī)模風電多目標、多層級、多控制對象的有功功率控制。提出一種基于CPS實時指標的風電集群與常規(guī)電源的協(xié)調互補控制方法,緩解系統(tǒng)調峰壓力。 (2)基于分層原則設計了風電集群有功功率控制系統(tǒng),并給出集群主站與上級調度中心、下級風電場子站／分散接入風電機組之間的標準化通信點表,實現風電集群自下而上的可觀測,自上而下的主動控制,為集群的智能調度奠定實施基礎。 (3)為充分利用集群內風電場的實時協(xié)調能力,實現科學合理的容量分配,建立了一種動態(tài)優(yōu)先排序法與多目標多約束優(yōu)化算法相結合的風電集群有功功率實時控制模型。提出風電場／分散接入風電機組的動態(tài)分類及排序規(guī)則,基于優(yōu)先控制序列和電網調度要求判定風電場實時控制模式；以提升風電的接納比例、降低集群網損為目標,建立基于超短期風功率預測的有功功率分配模型,優(yōu)化風電場出力,避免風電機組頻繁啟停,實現柔性連續(xù)控制。通過實際風電集群系統(tǒng)對實時控制策略進行了仿真和測試,驗證了該方法的有效性和可行性。
[Abstract]:Wind power generation, as a new energy generation method with the highest technological maturity and the most extensive application, has been greatly developed in recent years. Under the background that it is difficult for large-scale wind power to be connected to the grid, difficult to absorb, and the problem of "abandoning wind" cannot be effectively solved, the centralized prediction, control and dispatch center of wind power is established to improve the observability and controllability of large wind power base. Optimizing the utilization of wind energy resources is the only way for wind power to become a high quality power supply in the future. Therefore, based on the important project of National High Technology Research and Development Program (863 Program), "Wind farm, research and development of photovoltaic power station cluster control system", combined with the actual needs of wind power cluster operation and management in Jiuquan area, Gansu Province, China. In this paper, the coordinated control of active power in a large scale wind power system is studied, which has certain theoretical significance and application value. The main work of this paper is as follows: (1) the scheduling strategy of multi-time scale, hierarchical and partitioned coordination for wind power generation is studied. This paper analyzes the active power control ability of wind farm and the necessity and feasibility of centralized coordinated control, and puts forward that wind power cluster should be integrated into the integrated distributed coordinated control of power grid, and research on scale wind power multi-objective and multi-level. Active power control of multiple control objects. A coordinated and complementary control method of wind power cluster and conventional power supply based on CPS real-time index is proposed to relieve the peak load of the system. (2) based on the principle of stratification, the active power control system of wind power cluster is designed. The standardized communication point table between the main station of the cluster and the superior dispatching center, the sub-station of the lower wind farm and the decentralized access to the wind turbine is given, which can realize the observation from the bottom up and the active control from the top to the bottom of the wind power cluster. (3) in order to make full use of the real-time coordination ability of the wind farm in the cluster, realize the scientific and reasonable capacity distribution, A real-time control model of active power in wind power cluster is established, which combines dynamic precedence method with multi-objective and multi-constraint optimization algorithm. The dynamic classification and sorting rules of wind farm / decentralized access wind turbine are put forward to determine the real time control mode of wind farm based on priority control sequence and grid dispatching requirements, and the aim is to increase the acceptance ratio of wind power and reduce the cluster network loss. An active power distribution model based on ultra-short-term wind power prediction is established to optimize wind farm output, avoid frequent start and stop of wind turbine, and realize flexible continuous control. The real time control strategy is simulated and tested in the wind power cluster system, and the effectiveness and feasibility of the method are verified.
【學位授予單位】：華北電力大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TM614
本文編號：2165639
[Abstract]:Wind power generation, as a new energy generation method with the highest technological maturity and the most extensive application, has been greatly developed in recent years. Under the background that it is difficult for large-scale wind power to be connected to the grid, difficult to absorb, and the problem of "abandoning wind" cannot be effectively solved, the centralized prediction, control and dispatch center of wind power is established to improve the observability and controllability of large wind power base. Optimizing the utilization of wind energy resources is the only way for wind power to become a high quality power supply in the future. Therefore, based on the important project of National High Technology Research and Development Program (863 Program), "Wind farm, research and development of photovoltaic power station cluster control system", combined with the actual needs of wind power cluster operation and management in Jiuquan area, Gansu Province, China. In this paper, the coordinated control of active power in a large scale wind power system is studied, which has certain theoretical significance and application value. The main work of this paper is as follows: (1) the scheduling strategy of multi-time scale, hierarchical and partitioned coordination for wind power generation is studied. This paper analyzes the active power control ability of wind farm and the necessity and feasibility of centralized coordinated control, and puts forward that wind power cluster should be integrated into the integrated distributed coordinated control of power grid, and research on scale wind power multi-objective and multi-level. Active power control of multiple control objects. A coordinated and complementary control method of wind power cluster and conventional power supply based on CPS real-time index is proposed to relieve the peak load of the system. (2) based on the principle of stratification, the active power control system of wind power cluster is designed. The standardized communication point table between the main station of the cluster and the superior dispatching center, the sub-station of the lower wind farm and the decentralized access to the wind turbine is given, which can realize the observation from the bottom up and the active control from the top to the bottom of the wind power cluster. (3) in order to make full use of the real-time coordination ability of the wind farm in the cluster, realize the scientific and reasonable capacity distribution, A real-time control model of active power in wind power cluster is established, which combines dynamic precedence method with multi-objective and multi-constraint optimization algorithm. The dynamic classification and sorting rules of wind farm / decentralized access wind turbine are put forward to determine the real time control mode of wind farm based on priority control sequence and grid dispatching requirements, and the aim is to increase the acceptance ratio of wind power and reduce the cluster network loss. An active power distribution model based on ultra-short-term wind power prediction is established to optimize wind farm output, avoid frequent start and stop of wind turbine, and realize flexible continuous control. The real time control strategy is simulated and tested in the wind power cluster system, and the effectiveness and feasibility of the method are verified.
【學位授予單位】：華北電力大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TM614
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，本文編號：2165639
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