Abstract：Poorly damped oscillation is a key factor that affects the stability of large-scale interconnected power grids and is one of the major problems that limit the power exchange capacity between different areas. Aiming at the poorly damped mode, this paper proposed ambient-data-driven participation-factor-based generation rescheduling strategy for enhancing interarea mode damping. Firstly, subspace dynamic mode decomposition (Sub-DMD) algorithm was used to calculate the participation factor with respect to generator active power online from ambient data, and the relationship between the generation output and the mode damping can be quantified. Based on the identification results of modal phase, the generators for rescheduling can be divided into two groups. Combining with the power flow of the regional section, the adjustment direction of the two groups can be determined. Therefore, the key generators for enhancing the damping in the sink and source can be accurately determined. Finally, based on the participation factor identification results, combing with the principle of reducing the generation output in the source and increasing that in the sink accordingly, and fully considering the power limit of the adjustable generators and actual rescheduling feasibility constraints, the online damping enhancement strategy solely relying on synchronized ambient data was realized. The numerical simulation of IEEE 16-generator 5-area system and a real system verify the effectiveness and feasibility of the proposed method in terms of interarea mode damping enhancement.
王丽馨, 杨德友, 蔡国伟, 高晗. 自然激励下发电机有功参与因子提取及其在阻尼调制中的应用[J]. 电工技术学报, 2022, 37(5): 1194-1203.
Wang Lixin, Yang Deyou, Cai Guowei, Gao Han. Extraction of Participation Factor with Respect to Generation Active Power under Natural Excitation and Its Application in Damping Modulation. Transactions of China Electrotechnical Society, 2022, 37(5): 1194-1203.
[1] 熊连松, 修连成, 王慧敏, 等. 储能系统抑制电网功率振荡的机理研究[J]. 电工技术学报, 2019, 34(20): 4373-4380. Xiong Liansong, Xiu Liancheng, Wang Huimin, et al.Mechanism of energy storge system to suppress grid power oscillations[J]. Transactions of China Electrote-chnical Society, 2019, 34(20): 4373-4380. [2] 郑安然, 郭春义, 殷子寒, 等. 提高弱交流系统下混合多端直流输电系统小干扰稳定性的控制参数优化调节方法[J]. 电工技术学报, 2020, 35(6): 1336-1345. Zheng Anran, Guo Chunyi, Yin Zihan, et al.Optimal adjustment method of control parameters for improving small-signal stability of hybrid multi-terminal HVDC system under weak AC condition[J]. Transactions of China Electrotechnical Society, 2020, 35(6): 1336-1345. [3] 马燕峰, 霍亚欣, 李鑫, 等. 考虑时滞影响的双馈风电场广域附加阻尼控制器设计[J]. 电工技术学报, 2020, 35(1): 158-166. Ma Yanfeng, Huo Yaxin, Li Xin, et al.Design of wide area additional damping controller for doubly fed wind farms considering time delays[J]. Transactions of China Electrotechnical Society, 2020, 35(1): 158-166. [4] 丁贵立, 林涛, 陈汝斯, 等. 抗饱和广域时滞阻尼控制器参量Lyapunov设计策略[J]. 电工技术学报, 2019, 34(20): 4347-4357. Ding Guili, Lin Tao, Chen Rusi, et al.Research on design method of anti-windup wide-area time-delay damping controller[J]. Transactions of China Electrotechnical Society, 2019, 34(20): 4347-4357. [5] 于之虹, 李芳, 孙璐, 等. 小干扰稳定调度控制策略在线计算方法[J]. 中国电机工程学报, 2014, 34(34): 6191-6197. Yu Zhihong, Li Fang, Sun Lu, et al.An enhanced algorithm of online small signal stability control strategy generation[J]. Proceedings of the CSEE, 2014, 34(34): 6191-6197. [6] 杨德友, 王文嘉. 基于多变量阻尼比灵敏度的有功调制方法研究[J]. 电网技术, 2017, 41(11): 3612-3619. Yang Deyou, Wang Wenjia.On-line active power modulation based on multi-variable damping ratio sensitivity[J]. Power System Technology, 2017, 41(11): 3612-3619. [7] Li Chongtao, Chiang H D, Du Zhengchun.Network-preserving sensitivity-based generation rescheduling for suppressing power system oscillations[J]. IEEE Transactions on Power Systems, 2017, 32(5): 3824-3832. [8] Wu Guihong, Du Zhengchun, Li Chongtao, et al.VSC-MTDC operation adjustments for damping inter-area oscillations[J]. IEEE Transactions on Power Systems, 2019, 34(2): 1373-1382. [9] Archer B A, Annakkage U D, Jayasekara B, et al.Accurate prediction of damping in large interconnected power systems with the aid of regression analysis[J]. IEEE Transactions on Power Systems, 2008, 23(3): 1170-1178. [10] Huang Zhenyu, Zhou Ning, Tuffner F, et al.Improving small signal through operating point adjustment[C]//IEEE PES General Meeting, Minneapolis, MN, USA, 2010: 1-8. [11] 杨德友, 王文嘉, 高际惟, 等. 随机数据驱动下的机电振荡参数在线提取与阻尼调制(二): 基于有功调节的区间模式阻尼调制策略[J]. 中国. 电机工程学报, 2018, 38(9): 2571-2579. Yang Deyou, Wang Wenjia, Gao Jiwei, et al.On line electromechanical oscillation analysis and damping modulation for power system using ambient data (part II): inter area modes damping regulating based on generators redispatching[J]. Proceedings of the CSEE, 2018, 38(9): 2571-2579. [12] Mendoza-Armenta S, Dobson I.Applying a formula for generator redispatch to damp interarea oscillations using synchrophasors[J]. IEEE Transactions on Power Systems, 2016, 31(4): 3119-3128. [13] Andrija T S, Aleksandar M S.Rapid small-signal stability assessment and enhancement following changes in topology[J]. IEEE Transactions on Power Systems, 2015, 30(3): 1155-1163. [14] 鲍颜红, 徐伟, 徐泰山, 等. 基于机组出力调整的小干扰稳定辅助决策计算[J]. 电力系统自动化, 2011, 35(3): 88-91. Bao Yanhong, Xu Wei, Xu Taishan, et al.Small-signal stability auxillary decision-making calculation based on power generation adjustment[J]. Automation of Eletric Power Systems, 2011, 35(3): 88-91. [15] 鲍颜红, 冯长有, 徐泰山, 等. 电力系统在线安全稳定综合辅助决策[J]. 电力系统自动化, 2015, 39(1): 104-110. Bao Hongyan, Feng Changyou, Xu Taishan.Online security and stability comprehensive auxillary decision-making of power system[J]. Automation of Eletric Power Systems, 2015, 39(1): 104-110. [16] Kundur P.Power system stability and control[M]. New York: McGraw-Hill, 2001, 31(4): 699-827. [17] Takeishi N, Kawahara Y, Yairi T.Subspace dynamic mode decomposition for stochastic Koopman analysis[J]. Physical Review, 2017, 96(3): 1-11. [18] Yang Deyou, Zhang Tao, Cai Guowei, et al.Synchrophasor-based dominant electromechanical oscillation modes extraction using OpDMD considering measurement noise[J]. IEEE Systems Journal, 2019, 13(3): 3185-3193. [19] Canizares C, Fernandes T, Geraldi E, et al.Benchmark models for the analysis and control of small-signal oscillatory dynamics in power systems[J]. IEEE Transactions on Power Systems, 2016, 32(1): 715-722.
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