Abstract:The control system for doubly-fed pumped storage units used to regulate the grid power was modeled using a hydraulic-mechanical-electric coupled system of the pumped storage power plant for transient process. The power control system modeled a doubly-fed induction machine (DFIM) using the stator voltage oriented vector control strategy. The model was used to study the power regulation of a 300 MW doubly-fed variable speed unit connected to an infinite bus with comparisons to a conventional fixed-speed unit with an electrically excited synchronous machine. The results show that the DFIM stator active power can be controlled directly by the rotor current so that the stator active power of the variable speed unit can accurately track the power reference. The fixed-speed unit output power is the mechanical power generated by the pump turbine, which can be changed by modifying the guide vane opening and adjusting the flow. However, the penstocks are quite long, so the flow rate and the power of the fixed-speed unit change slowly.
胡万丰, 樊红刚, 王正伟. 双馈式抽水蓄能机组功率调节仿真与控制[J]. 清华大学学报(自然科学版), 2021, 61(6): 591-600.
HU Wanfeng, FAN Honggang, WANG Zhengwei. Simulated power control for doubly-fed pumped storage units. Journal of Tsinghua University(Science and Technology), 2021, 61(6): 591-600.
[1] SCHMIDT J, KEMMETMULLER W, KUGI A. Modeling and static optimization of a variable speed pumped storage power plant[J]. Renewable Energy, 2017, 111:38-51. [2] 余向阳, 朱咏, 高春阳. 双馈水轮发电机快速功率响应的控制策略研究[J]. 水力发电学报, 2019, 38(5):89-96.YU X Y, ZHU Y, GAO C Y. Control strategies for rapid power responses of doubly-fed hydro generators[J]. Journal of Hydroelectric Engineering, 2019, 38(5):89-96. (in Chinese) [3] PANNATIER Y, KAWKABANI B, NICOLET C, et al. Investigation of control strategies for variable-speed pump-turbine units by using a simplified model of the converters[J]. IEEE Transactions on Industrial Electronics, 2010, 57(9):3039-3049. [4] 王婷婷, 赵杰君, 王朝阳. 我国电网对抽水蓄能电站变速机组的需求分析[J]. 水力发电, 2016, 42(12):107-110, 114.WANG T T, ZHAO J J, WANG C Y. Demand analysis of variable speed units of pumped-storage power station in power grid of China[J]. Water Power, 2016, 42(12):107-110, 114. (in Chinese) [5] 赵杰君, 栾凤奎, 杨霄霄. 抽水蓄能变速机组前期规划策略初探[J]. 水力发电, 2018, 44(4):57-59.ZHAO J J, LUAN F K, YANG X X. Study on preliminary planning strategy of variable speed unit of pumped-storage power station[J]. Water Power, 2018, 44(4):57-59. (in Chinese) [6] 畅欣. FSC可变速抽水蓄能机组功率调节特性研究[D]. 北京:华北电力大学(北京), 2016.CHANG X. Research on power control for variable speed pumped storage with full-size converter[D]. Beijing:North China Electric Power University (Beijing), 2016. (in Chinese) [7] ILIEV I, TRIVEDI C, DAHLHAUG O G. Variable-speed operation of Francis turbines:A review of the perspectives and challenges[J]. Renewable and Sustainable Energy Reviews, 2019, 103:109-121. [8] NICOLET C, PANNATIER Y, KAWKABANI B, et al. Benefits of variable speed pumped storage units in mixed islanded power network during transient operation[C]//Proceedings of HYDRO 2009. Lyon, France, 2009. [9] NASIR U, IQBAL Z, MINXIAO H, et al. Active and reactive power control of a variable speed pumped storage system[C]//Proceedings of the 2015 IEEE 15th International Conference on Environment and Electrical Engineering (EEEIC). Rome, Italy, 2015. [10] SARAS AÚG A J I, PÉREZ-DÍAZ J I, WILHELMI J R, et al. Dynamic response and governor tuning of a long penstock pumped-storage hydropower plant equipped with a pump-turbine and a doubly fed induction generator[J]. Energy Conversion and Management, 2015, 106:151-164. [11] DAMDOUM A, SLAMA-BELKHODJA I, PIETRZAK-DAVID M, et al. Low voltage ride-through strategies for doubly fed induction machine pumped storage system under grid faults[J]. Renewable Energy, 2016, 95:248-262. [12] NAG S, LEE K Y. DFIM-based variable speed operation of pump-turbines for efficiency improvement[J]. IFAC- PapersOnLine, 2018, 51(28):708-713. [13] 张高高, 姜海军, 徐青, 等. 基于机组运行特性曲线的变速抽水蓄能机组自适应协调控制方法[J]. 水力发电, 2019, 45(8):80-84.ZHANG G G, JIANG H J, XU Q, et al. Adaptive coordinated control method of variable speed pumped-storage unit based on unit operating characteristic curves[J]. Water Power, 2019, 45(8):80-84. (in Chinese) [14] WYLIE E B, STREETER V L, SUO L. Fluid transients in systems[M]. Englewood Cliffs, USA:Prentice Hall, 1993. [15] 王欣竹, 韩民晓, TESHAGER B G. 双馈式可变速抽水蓄能机组无功特性分析[J]. 电网技术, 2019, 43(8):2918-2925.WANG X Z, HAN M X, TESHAGER B G. Reactive power characteristics analysis of doubly fed adjustable-speed pumped storage unit[J]. Power System Technology, 2019, 43(8):2918-2925. (in Chinese) [16] ABAD G, LOPEZ TABERNA J, RODRIGUEZ M, et al. Doubly fed induction machine:Modeling and control for wind energy generation[M]. New York, USA:Wiley, 2011. [17] 倪以信, 陈寿孙, 张宝霖. 动态电力系统的理论和分析[M]. 北京:清华大学出版社, 2002.NI Y X, CHEN S S, ZHANG B L. Theory and analysis of dynamics of power systems[M]. Beijing:Tsinghua University Press, 2002. (in Chinese) [18] MARCHAL M, FLESH G, SUTER P. The calculation of waterhammer problems by means of the digital computer[C]//Proceedings of the International Symposium on Waterhammer in Pumped Storage Projects. Chicago, USA, 1965. [19] XU D H, BLAABJERG F, CHEN W J, et al. Advanced control of doubly fed induction generator for wind power systems[M]. New York, USA:Wiley, 2018.