Voltage Stability Critical Injection Area Determination via Cross-Relative Gain
Li Xue1, Jiang Tao1, Li Guoqing1, Jia Hongjie2, Hou Kai2
1. Department of Electrical Engineering Northeast Electric Power University Jilin 132012 China; 2. Key Laboratory of Smart Grid of Ministry of Education Tianjin University Tianjin 300072 China;
摘要 提出一种识别影响电力系统电压稳定关键节点的关键注入区域新算法。计算系统各节点的电压稳定指标,确定系统电压稳定关键节点。以电压稳定关键节点为关键注入区域的主导节点,借助相关增益矩阵的相关性质,识别与系统中各电压稳定主导节点存在强电压耦合关系的负荷节点和发电机节点,构建含电压稳定主导节点的电压稳定关键注入区域;针对所得注入区域,给出系统稳态和紧急情况下改善系统电压稳定性的相关控制策略。将所提方法应用于New England 39节点系统中,分析、对比结果验证了所提方法的正确性和有效性。最后将该方法应用于波兰电网中,验证了该方法的实用性。
Abstract:This paper proposes a novel method for identifying the voltage stability critical injection areas (VSCIA) that impact the voltage stability of critical nodes in power systems. The voltage stability critical nodes are identified through the voltage stability index (VSI). Considering the voltage critical nodes as the pilot buses of VSCIAs, the load and generator nodes that have strong voltage coupling with the pilot buses are identified according to the cross-relative gain (CRG) and then the VSCIAs containing the voltage stability pilot buses are constructed. Moreover, based on the practical VSCIAs, a voltage control strategy under steady state and emergency conditions is proposed to improve the voltage stability of the system. Finally, the effectiveness of the proposed method is demonstrated in the New England 39-bus system. Besides, the method is further applied in the Polish power grid to verify its feasibility and practicality in bulk power systems.
[1] 周林, 任伟, 廖波, 等. 并网型光伏电站无功电压控制[J]. 电工技术学报, 2015, 30(20): 168-175. Zhou Lin, Ren Wei, Liao Bo, et al.Reactive power and voltage control for grid-connected PV power plants[J]. Transactions of China Electrotechnical Society, 2015, 30(20): 168-175. [2] 张明锐, 梅杰, 李元浩, 等. 基于切换仿射系统的风电电压稳定控制[J]. 电工技术学报, 2016, 31(3): 171-179. Zhang Mingrui, Mei Jie, Li Yuanhao, et al.The voltage stability control in the wind power system based on the switched affine system[J]. Transactions of China Electrotechnical Society, 2016, 31(3): 171-179. [3] 郭玥, 张红斌, 杨卫红, 等. 柔性直流输电在城市配电网应用中的仿真研究[J]. 电气技术, 2015, 16(6): 14-19. Guo Yue, Zhang Hongbin, Yang Weihong, et al.Simulation study of application of VSC-HVDC in urban distribution network[J]. Electrical Engineering Electr Eng2015, 16(6): 14-19. [4] 周红婷, 宋玮. 计及动态无功控制影响的大规模风电汇集地区电压稳定性分析[J]. 电力系统保护与控制, 2016, 44(7): 13-18. Zhou Hongting, Song Wei.Analysis on voltage stability in large-scale wind farms integration area considering impact of dynamic reactive power control[J]. Power System Protection and Control, 2016, 44(7): 13-18. [5] 李昌超, 鲁宝春, 陈凤英, 等. 基于向量相似度的无功电压分区方法的研究[J]. 电力系统保护与控制, 2014, 42(14): 14-18. Li Changchao, Lu Baochun, Chen Fengying, et al.Reactive power voltage control partitioning based on vector similarity[J]. Power System Protection and Control, 2014, 42(14): 14-18. [6] 郑颖, 孙近文, 张冲, 等, 考虑电动汽车接入的配电系统静态电压稳定裕度研究[J]. 电工技术学报, 2014, 29(8): 20-26. Zheng Ying, Sun Jinwen, Zhang Chong, et al.Study of voltage stability margin for the distribution network with electric vehicle integration[J]. Transactions of China Electrotechnical Society, 2014, 29(8): 20-26. [7] Liu H, Bose A, Venkatasubramanian V.A fast voltage security assessment method using adaptive bounding[J]. IEEE Transactions on Power System, 2000, 15(3): 1137-1141. [8] Zhong J, Nobile E, Bose A, et al.Localized reactive power markets using the concept of voltage control areas[J]. IEEE Transactions on Power System, 2004, 19(3): 1555-1561. [9] Verma M K, Srivastava S C.Approach to determine voltage control areas considering impact of contin- gencies[J]. IEE Proceedings of Generation, Trans- mission and Distribution, 2005, 152(3): 342-350. [10] 徐毅非, 蒋文波, 程雪丽. 基于谱聚类的无功电压分区和主导节点选择[J]. 电力系统保护与控制, 2016, 44(15): 73-78. Xu Yifei, Jiang Wenbo, Cheng Xueli.Partitioning for reactive voltage based on spectral clustering and pilot nodes selection[J]. Power System Protection and Control, 2016, 44(15): 73-78. [11] Sun H, Guo Q, Zhang B, et al.An adaptive zone- division-based automatic voltage control system with applications in China[J]. IEEE Transactions on Power System, 2013, 28(2): 1816-1828. [12] Kessel P, Glavitsch H.Estimating the voltage stability of a power system[J]. IEEE Transactions on Power Delivery, 1986, 1(3): 346-354. [13] 姜涛, 李国庆, 贾宏杰, 等. 电压稳定在线监控的简化L指标及其灵敏度分析方法[J]. 电力系统自动化, 2012, 36(20): 13-18. Jiang Tao, Li Guoqing, Jia Hongjie, et al.Simplified L-index and its sensitivity analysis method for on-line monitoring of voltage stability control voltage stability[J]. Automation of Electric Power Systems, 2012, 36(20): 13-18. [14] 姜涛, 陈厚合, 李国庆. 基于局部电压稳定指标的电压/无功分区调节方法[J]. 电网技术, 2012, 32(7): 208-213. Jiang Tao, Chen Houhe, Li Guoqing.A new algorithm for partitioned regulation of voltage and reactive power in power system utilizing local voltage stability index[J]. Power System Technology, 2012, 32(7): 208-213. [15] 姜涛, 李筱婧, 李国庆, 等. 基于广域量测信息的负荷裕度灵敏度计算新方法[J]. 电工技术学报, 2016, 31(21): 102-113. Jiang Tao, Li Xiaojing, Li Guoqing, et al.A novel synchrophasor measurement-based approach to loading margin sensitivity analysis in power systems[J]. Transactions of China Electrotechnical Society, 2016, 31(21): 102-113. [16] Farsangi M M, Song Y H, Lee K Y.Choice of FACTS device control inputs for damping interarea oscillations[J]. IEEE Transactions on Power System, 2004, 19(2): 1135-1143. [17] Milanovic J V, Duque A C S. Identification of electromechanical modes and placement of PSSs using relative gain array[J]. IEEE Transactions on Power System, 2004, 19(1): 410-417. [18] Wang J, Fu C, Zhang Y.Design of WAMS-based multiple HVDC damping control system[J]. IEEE Transactions on Smart Grid, 2011, 2(2): 363-374. [19] Li Y, Rehtanz C, Ruberg S, et al.Assessment and choice of input signals for multiple HVDC and FACTS wide-area damping controllers[J]. IEEE Transactions on Power System, 2012, 27(4): 1969-1977. [20] Zimmerman R D, Murillo-Sanchez C E, Thomas R J. Matpower: steady-state operations, planning and analysis tools for power systems research and education[J]. IEEE Transactions on Power System, 2011, 26(1): 12-19.