抑制直流连续换相失败的可变速抽水蓄能机组协调控制策略

doi:10.19595/j.cnki.1000-6753.tces.240395

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Abstract

With the further advancement of the construction of "double-high" power system, the continuous phase change failure problem caused by transient voltage at the line commutated converter based high voltage direct current (LCC-HVDC) receiving end has become an important risk factor threatening the safe and stable operation of the power grid. Variable speed pumped storage (VSPS) units have the advantages of large single-machine capacity and fast response speed, which can participate in the transient voltage regulation of the power grid. The transient voltage regulation capability of VSPS can be further used to suppress the LCC-HVDC continuous phase change failure when VSPS is fed into the LCC-HVDC receiving end grid, however, there is still a gap in the domestic and international research in this area.
Firstly, from the structural characteristics of LCC-HVDC receiving end containing VSPS, the risk of phase-change failure faced by receiving end system is explained. Secondly, based on the mechanism of VSPS to inhibit the occurrence of continuous phase-change failure, a coordinated control strategy of VSPS to inhibit the continuous phase-change failure of LCC-HVDC is proposed, which takes the voltage of receiving end converter bus as the input signal, and acts on the reactive power outer loop of VSPS.Then, the reactive power regulation capability of the unit under different operating conditions is analysed by theoretical derivation, and the reactive power allocation scheme for VSPS transient voltage regulation is formulated by considering the maximum rotor current and the capacity limitation of the converter on the grid side. Finally, the reasonableness of the reactive power allocation scheme and the validity of the coordinated control strategy are verified based on the electromagnetic transient model of the VSPS feeder to the LCC-HVDC receiving end.
The validation results show that under different fault times and different fault degrees, the VSPS can reduce the probability of LCC-HVDC continuous phase change failure under most operating conditions by putting in the coordinated control strategy proposed in this paper. At the same time. Priority allocation of reactive power to grid side converter (GSC) can reduce the rotor over current to a certain extent without affecting the transient voltage support effect, ensuring the safe and stable operation of the unit.
The main conclusions of this paper are as follows: (1) The response time delay of the VSPS transient voltage regulation control is within the hundred milliseconds time scale, and for the LCC-HVDC continuous phase change failure fault it can function before the second dip of the bus voltage, which meets the response time requirement for suppressing the continuous phase change failure. (2) Both the stator side of the VSPS and the GSC have a certain amount of reactive power compensation capacity, and taking into account the demand for suppressing the rotor current during the fault increase demand, it is more reasonable to prioritise the assignment of reactive power to the GSC when the unit participates in transient voltage regulation. (3) The coordinated control strategy of VSPS proposed in this paper takes the voltage of the receiving end commutating bus as the in(pu)t signal, and acts on the reactive power outer loop in the control part of the unit. This method enables the VSPS to respond in real time to the dynamic changes in the LCC-HVDC receiving end converter bus voltage, compensate the corresponding reactive power within the safe operating range of the unit, support the converter bus voltage, and thus effectively inhibit the occurrence of LCC-HVDC continuous phase change failure.

Key words： Continuous commutation failed variable speed pump storage unit reactive power characteristic coordinated control strategy

Received: 12 March 2024

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TM721.1

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	Gao Benfeng
	Cui Haojiang
	Yang Peng
	Liang Jifeng
	Li Tiecheng

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Gao Benfeng,Cui Haojiang,Yang Peng等. Coordinated Control Strategy of Variable Speed Pumped Storage Unit for Suppressing Continuous Commutation Failure of HVDC[J]. Transactions of China Electrotechnical Society, 0, (): 2492925-2492925.

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[1] 陈亚红, 邓长虹, 刘玉杰, 等. 抽水工况双馈可变速抽蓄机组机电暂态建模及有功-频率耦合特性[J]. 中国电机工程学报, 2022, 42(3): 942-956.
Chen Yahong, Deng Changhong, Liu Yujie, et al.Electromechanical transient modelling and active power-frequency coupling characteristics of doubly-fed variable speed pumped storage under pumping mode[J]. Proceedings of the CSEE, 2022, 42(3): 942-956.
[2] Joseph A, Desingu K, Semwal R R, et al.Dynamic performance of pumping mode of 250 MW variable speed hydro-generating unit subjected to power and control circuit faults[J]. IEEE Transactions on Energy Conversion, 2018, 33(1): 430-441.
[3] 高本锋, 王义, 范辉, 等. 基于阻尼路径的新能源经LCC-HVDC送出系统次同步交互作用分析方法[J]. 电工技术学报, 2023, 38(20): 5572-5589.
Gao Benfeng, Wang Yi, Fan Hui, et al.A sub-synchronous interaction analysis method of renewable energy generations integrated with LCC-HVDC system based on damping path[J]. Transactions of China Electrotechnical Society, 2023, 38(20): 5572-5589.
[4] Li Hongzheng, Han Kunlun, Liu Shuhao, et al.A dynamic nonlinear VDCOL control strategy based on the Taylor expansion of DC voltages for suppressing the subsequent commutation failure in HVDC transmission[J]. Energies, 2023, 16(21): 7342.
[5] 陈睿康, 李凤婷, 尹纯亚, 等. 基于改进VDCOL的直流系统后续换相失败抑制策略[J]. 电力工程技术, 2022, 41(2): 2-9.
Chen Ruikang, Li Fengting, Yin Chunya, et al.Suppression strategy for subsequent commutation failure of DC system based on improved VDCOL[J]. Electric Power Engineering Technology, 2022, 41(2): 2-9.
[6] 汪娟娟, 郑睿娜, 傅闯, 等. 基于逆变站动态无功控制的后续换相失败抑制方法[J]. 电工技术学报, 2023, 38(17): 4672-4682.
Wang Juanjuan, Zheng Ruina, Fu Chuang, et al.A method based on constant reactive power control of inverter to suppress the subsequent commutation failure in HVDC system[J]. Transactions of China Electrotechnical Society, 2023, 38(17): 4672-4682.
[7] 张志猛, 贾伯岩, 张建忠, 等. 新型大容量调相机在特高压直流输电中的应用研究[J]. 河北电力技术, 2019, 38(4): 1-4, 19.
Zhang Zhimeng, Jia Boyan, Zhang Jianzhong, et al.Research of new large-capacity synchronous condenser in UHVDC transmission application[J]. Hebei Electric Power, 2019, 38(4): 1-4, 19.
[8] Aamir A, Qiao Li, Guo Chunyi, et al.Impact of synchronous condenser on the dynamic behavior of LCC based UHVDC system hierarchically connected to AC system[J]. CSEE Journal of Power and Energy Systems, 2019: 190-198.
[9] 杨健, 洪潮, 周保荣, 等. 受端弱系统条件下STATCOM提升直流输电能力机理研究[J]. 中国电机工程学报, 2019, 39(17): 5005-5014.
Yang Jian, Hong Chao, Zhou Baorong, et al.Study on mechanism of STATCOM improving the transmission capability of HVDC connected to weak AC system[J]. Proceedings of the CSEE, 2019, 39(17): 5005-5014.
[10] Wang Qiang, Li Tianran, Tang Xiaobo, et al.Study on the site selection for synchronous condenser responding to commutation failures of multi-infeed HVDC system[J]. The Journal of Engineering, 2019, 2019(16): 1413-1418.
[11] 刘世超, 王银照, 郑施, 等. 抑制直流连续换相失败的光伏无功补偿策略[J]. 计算机仿真, 2022, 39(9): 101-107.
Liu Shichao, Wang Yinzhao, Zheng Shi, et al.Photovoltaic reactive power compensation strategy for suppressing DC continuous commutation failure[J]. Computer Simulation, 2022, 39(9): 101-107.
[12] 欧阳金鑫, 陈纪宇, 李昂, 等. 兼顾直流电压安全与无功支撑的柔性直流输电故障穿越控制方法[J/OL]. 电工技术学报, 2024: 1-16[2024-05-08]. https://doi.org/10.19595/j.cnki.1000-6753.tces.231447.
Ouyang Jinxin, Chen Jiyu, Li Ang, et al. Fault ride- through control method for VSC-HVDC balancing between DC voltage security and reactive power support[J/OL]. Transactions of China Electrotechnical Society, 2024: 1-16[2024-05-08]. https://doi.org/10.19595/j.cnki.1000-6753.tces.231447.
[13] 姜惠兰, 王绍辉, 李希钰, 等. 考虑动态电压区间无功支撑的双馈风机连锁故障穿越控制策略[J]. 高电压技术, 2022, 48(1): 147-155.
Jiang Huilan, Wang Shaohui, Li Xiyu, et al.Cascading fault ride-through control strategy for doubly-fed wind turbines considering reactive power support in dynamic voltage range[J]. High Voltage Engineering, 2022, 48(1): 147-155.
[14] 李桐, 韩学山. 时变追踪并网光伏电站最大输出功率的无功优化方法[J]. 电工技术学报, 2023, 38(11): 2921-2931.
Li Tong, Han Xueshan.Reactive power optimization for time-varying tracking of maximum output power of grid-connected photovoltaic power station[J]. Transactions of China Electrotechnical Society, 2023, 38(11): 2921-2931.
[15] 王欣竹, 韩民晓, Bitew Girmaw Teshage.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): 2918-2924.
Wang Xinzhu, Han Minxiao, Teshager B G.Reactive power characteristic analysis of doubly-fed adjustable-speed pumped storage unit[J]. Power System Technology, 2019, 43(8): 2918-2924.
[16] Wang Xinzhu, Han Minxiao, Teshager B G.A novel method to analyze the reactive power characteristic of doubly fed adjustable-speed pumped storage unit[C]//2018 International Conference on Power System Technology (POWERCON), Guangzhou, 2018: 4143-4148.
[17] 李辉, 钟逸铭, 宋二兵, 等. 交流励磁抽水蓄能机组运行功率能力计算[J]. 太阳能学报, 2020, 41(4): 310-317.
Li Hui, Zhong Yiming, Song Erbing, et al.Calculation of operation power ability for adjustable speed pumped storage unit with ac-excitation machine[J]. Acta Energiae Solaris Sinica, 2020, 41(4): 310-317.
[18] 张慧中, 崔学深, 桂中华, 等. 双馈抽水蓄能机组无功调节极限能力研究[J]. 大电机技术, 2023(2): 1-7, 29.
Zhang Huizhong, Cui Xueshen, Gui Zhonghua, et al.Research on limit capacity of reactive power regulation of doubly-fed pumped storage unit[J]. Large Electric Machine and Hydraulic Turbine, 2023(2): 1-7, 29.
[19] Ma Qing, Deng Changhong, Fan Hu, et al.Research of doubly fed induction machine’s optimal reactive power limit considering junction point’s voltage fluctuation[C]//2020 IEEE 4th Conference on Energy Internet and Energy System Integration (EI2), Wuhan, China, 2020: 2577-2582.
[20] 乔照威, 孙玉田, 戈宝军. 可变速抽水蓄能发电电动机功率特性分析[J]. 大电机技术, 2022(3): 8-13.
Qiao Zhaowei, Sun Yutian, Ge Baojun.Power performance analysis of variable speed pumped storage generator motor[J]. Large Electric Machine and Hydraulic Turbine, 2022(3): 8-13.
[21] Nasir U, Iqbal Z, Rasheed M T, et al.Active and reactive power control of a variable speed pumped storage system[C]//2015 IEEE 15th International Conference on Environment and Electrical Engineering (EEEIC), Rome, Italy, 2015: 6-11.
[22] 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.
[23] Bidgoli M A, Ali Mohammadpour H, Bathaee S M T. Advanced vector control design for DFIM-based hydropower storage for fault ride-through enhancement[J]. IEEE Transactions on Energy Conversion, 2015, 30(4): 1449-1459.
[24] 庄凯勋, 孙建军, 丁理杰, 等. 提升双馈变速抽水蓄能机组频率响应特性的控制策略[J]. 电工技术学报, 2023, 38(23): 6292-6304.
Chuang Kaihsun, Sun Jianjun, Ding Lijie, et al.A control strategy with improved frequency response characteristics of variable speed DFIM pumped storage[J]. Transactions of China Electrotechnical Society, 2023, 38(23): 6292-6304.
[25] 陈骁, 訾鹏, 郝婧, 等. 面向系统功角稳定性提升的变速抽水蓄能机组故障穿越性能优化[J]. 电力系统自动化, 2023, 47(24): 156-164.
Chen Xiao, Zi Peng, Hao Jing, et al.Fault ride-through performance optimization of variable-speed pumped storage units for enhancing power angle stability of power systems[J]. Automation of Electric Power Systems, 2023, 47(24): 156-164.
[26] 赵畹君. 高压直流输电工程技术[M]. 2版. 北京: 中国电力出版社, 2011.
[27] 汤奕, 郑晨一, 楼伯良, 等. 抑制连续换相失败的直流功率控制策略[J]. 电网技术, 2019, 43(10): 3514-3522.
Tang Yi, Zheng Chenyi, Lou Boliang, et al.Research on DC power control strategy for mitigating continuous commutation failure[J]. Power System Technology, 2019, 43(10): 3514-3522.
[28] 杨程祥, 姚伟, 周泓宇, 等. 抑制直流后续换相失败的自适应触发角补偿控制[J]. 电力工程技术, 2022, 41(2): 10-19.
Yang Chengxiang, Yao Wei, Zhou Hongyu, et al.Adaptive firing angle compensation control for mitigating DC subsequent commutation failure[J]. Electric Power Engineering Technology, 2022, 41(2): 10-19.
[29] 李兆伟, 吴雪莲, 曹路, 等. 抑制直流连续换相失败的调相机紧急控制[J]. 电力系统自动化, 2018, 42(22): 91-97.
Li Zhaowei, Wu Xuelian, Cao Lu, et al.Emergency control of synchronous condenser to suppress DC continuous commutation failure[J]. Automation of Electric Power Systems, 2018, 42(22): 91-97.
[30] 陈亚红, 邓长虹, 武荷月, 等. 发电工况可变速抽蓄机组模式切换过程多阶段柔性协调控制[J]. 中国电机工程学报, 2021, 41(15): 5258-5273.
Chen Yahong, Deng Changhong, Wu Heyue, et al.Multi-stage soft coordinated control of variable speed pumped storage unit in the process of mode conversion under the generation condition[J]. Proceedings of the CSEE, 2021, 41(15): 5258-5273.