暂态稳定视角下的强关联输电断面及其识别方法
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摘要
多个交流输电断面暂态稳定极限功率相互耦合,给电网安全稳定运行控制带来了极大挑战。文中深入挖掘受扰系统中暂态响应轨迹特征与稳定模式的对应关系,提出了暂态稳定视角下关键输电断面及关联断面的概念,并将关联输电断面分为模式共存机理决定的关联断面和模式演化机理决定的关联断面两类。提出了基于电网电气量变化来反映系统稳定模式的支路同步力系数指标,并结合该指标、图论和暂态稳定模式识别方法,提出了关键断面及关联断面识别的实用算法,有利于克服人工经验方法中因机理分析不足而可能导致的识别不准和效率低下的缺陷,为基于输电断面准确识别的稳定分析或运行监控提供了基础。基于IEEE 10机39节点系统的算例阐明了所提方法的原理及有效性。
The coupling of transient stability limit power among multiple AC transmission sections brings great challenges to the security and stability operation of the power grid. Based on digging the corresponding relationship between the transient response trajectory characteristics and the stability mode in the disturbed system, the concept of the key transmission section and the associated sections from the transient stability perspective is proposed. The associated transmission sections are classified as the mode-coexistence mechanism determined and mode-evolution mechanism determined sections. The index of the synchronization force coefficient is put forward for the disturbance severity of the branch, which is used to reflect the system stability model based on the electrical quantity changes. A practical algorithm for identifying the key section and related sections is then put forward by combining the index, the graph theory and the transient stability mode identification method. The proposed algorithm is helpful for overcoming the lack of inaccuracy and inefficiency of the artificial experience method which is lack of mechanism analysis guidance. It provides the basis for the stability analysis or operation monitoring of the power grid security and stability coordination control based on the accurate identification of transmission section. Based on the example of IEEE 10-machine 39-node system, the principle and effectiveness of the proposed method are illustrated.
The coupling of transient stability limit power among multiple AC transmission sections brings great challenges to the security and stability operation of the power grid. Based on digging the corresponding relationship between the transient response trajectory characteristics and the stability mode in the disturbed system, the concept of the key transmission section and the associated sections from the transient stability perspective is proposed. The associated transmission sections are classified as the mode-coexistence mechanism determined and mode-evolution mechanism determined sections. The index of the synchronization force coefficient is put forward for the disturbance severity of the branch, which is used to reflect the system stability model based on the electrical quantity changes. A practical algorithm for identifying the key section and related sections is then put forward by combining the index, the graph theory and the transient stability mode identification method. The proposed algorithm is helpful for overcoming the lack of inaccuracy and inefficiency of the artificial experience method which is lack of mechanism analysis guidance. It provides the basis for the stability analysis or operation monitoring of the power grid security and stability coordination control based on the accurate identification of transmission section. Based on the example of IEEE 10-machine 39-node system, the principle and effectiveness of the proposed method are illustrated.
引文
[1] 方勇杰.跨区互联电网紧急控制技术未来发展分析[J].电力系统自动化,2011,35(15):1-5.FANG Yongjie. Analysis on trends in emergency control technology of cross-regional interconnected power systems[J]. Automation of Electric Power Systems, 2011, 35(15): 1-5.
[2] 李明节.大规模特高压交直流混联电网特性分析与运行控制[J].电网技术,2016,27(4):985-991.LI Mingjie. Characteristic analysis and operational control of large-scale hybrid UHV AC/DC power grids[J]. Power System Technology, 2016, 27(4): 985-991.
[3] 侯俊贤,韩民晓,李柏青,等.考虑网络拓扑变化的薄弱断面快速评估方法[J].高电压技术,2016,42(1):289-295.HOU Junxian, HAN Minxiao, LI Baiqing, et al. Fast identification method of weak transmission section considering the influence of power network changes[J]. High Voltage Engineering, 2016, 42(1): 289-295.
[4] 王彬,郭文鑫,向德军,等.基于改进支持向量机和两步式聚类分析的电网关键断面辨识和精细规则生成方法[J].电力自动化设备,2017,37(9):166-170.WANG Bin, GUO Wenxin, XIANG Dejun, et al. Grid critical section detection and fine operational rule generation based on improved supported vector machine and two-step clustering analysis[J]. Electric Power Automation Equipment, 2017, 37(9): 166-170.
[5] 苗田,郑超,马世英,等.适应主导薄弱断面迁移的暂态稳定控制[J].电力系统保护与控制,2016,44(19):41-48.MIAO Tian, ZHENG Chao, MA Shiying, et al. Transient stability control adapting to dominant weak section migration[J]. Power System Protection and Control, 2016, 44(19): 41-48.
[6] 牟颖,张保会,薄志谦.防止输电断面连锁过载的快速控制算法[J].电力系统自动化,2017,41(3):39-45.DOI:10.7500/AEPS20160710004.MOU Ying, ZHANG Baohui, BO Zhiqian. Fast control algorithm for preventing cascading overload on transmission section[J]. Automation of Electric Power Systems, 2017, 41(3): 39-45. DOI: 10.7500/AEPS20160710004.
[7] 方勇杰,崔晓丹,王胜明,等.暂态稳定极限耦合的多个输电断面极限功率协调计算[J].电力系统自动化,2015,39(22):53-58.FANG Yongjie, CUI Xiaodan, WANG Shengming, et al. Coordinated limit power calculation of multi-sections with transient stability limit coupling[J]. Automation of Electric Power Systems, 2015, 39(22): 53-58.
[8] 徐泰山,彭慧敏,苏寅生,等.基于并行模式的关联输电断面极限功率计算[J].电力系统自动化,2012,36(7):66-70.XU Taishan, PENG Huimin, SU Yinsheng, et al. Limit power calculation of correlative transmission interfaces based on a parallel model[J]. Automation of Electric Power Systems, 2012, 36(7): 66-70.
[9] 梁艳红,张文朝,李付强,等.链式电网动态稳定下多断面耦合特性研究[J].电力系统保护与控制,2017,45(4):107-113.LIANG Yanhong, ZHANG Wenchao, LI Fuqiang, et al. Research on multi-sections coupling characteristics of chain network dynamic stability[J]. Power System Protection and Control, 2017, 45(4): 107-113.
[10] 徐泰山,鲍颜红,苏寅生,等.暂态稳定断面功率极限区间和关联度指标计算[J].电力系统自动化,2016,40(20):154-160.XU Taishan, BAO Yanhong, SU Yinsheng, et al. Calculation of power limit interval and correlation degree for transient stability section[J]. Automation of Electric Power Systems, 2016, 40(20): 154-160.
[11] 霍超,崔晓丹,牛拴保,等.一种与直流暂态稳定强相关的交流断面识别方法[J].电力系统保护与控制,2016,44(17):83-89.HUO Chao, CUI Xiaodan, NIU Shuanbao, et al. A quantitative assessment method for degree of transient stability coupling of DC and AC transmission sections[J]. Power System Protection and Control, 2016, 44(17): 83-89.
[12] 姜臻.电力系统输电断面及故障评估关键技术研究[D].武汉:华中科技大学,2014.JIANG Zhen. Studies on key assessment technology of transmission sections and faults in power system[D]. Wuhan: Huazhong University of Science and Technology, 2014.
[13] 方竹,白晓民,丁剑,等.电力系统关键输电断面的动态搜索算法[C]//第十一届全国电工数学学术年会论文集,2007年11月23日,福州,中国:223-231.FANG Zhu, BAI Xiaomin, DING Jian, et al. Dynamic search algorithm of key transmission section of power system[C]//Proceedings of the 11th National Annual Conference on Electrotechnics and Mathematics, November 23, 2007, Fuzhou, China: 223-231.
[14] 周德才,张保会,姚峰,等.基于图论的输电断面快速搜索[J].中国电机工程学报,2006,26(12):32-38.ZHOU Decai, ZHANG Baohui, YAO Feng, et al. Fast search for transmission section based on graph theory[J]. Proceedings of the CSEE, 2006, 26(12): 32-38.
[15] 崔晓丹,张红丽,方勇杰,等.暂态功角弱稳定模式辨识及其协调紧急控制策略[J].电力系统自动化,2018,42(1):91-97.DOI:10.7500/AEPS20170512004.CUI Xiaodan, ZHANG Hongli, FANG Yongjie, et al. Weak stability mode identification of transient power angle and its emergency control strategy[J]. Automation of Electric Power Systems, 2018, 42(1): 91-97. DOI: 10.7500/AEPS20170512004.
[2] 李明节.大规模特高压交直流混联电网特性分析与运行控制[J].电网技术,2016,27(4):985-991.LI Mingjie. Characteristic analysis and operational control of large-scale hybrid UHV AC/DC power grids[J]. Power System Technology, 2016, 27(4): 985-991.
[3] 侯俊贤,韩民晓,李柏青,等.考虑网络拓扑变化的薄弱断面快速评估方法[J].高电压技术,2016,42(1):289-295.HOU Junxian, HAN Minxiao, LI Baiqing, et al. Fast identification method of weak transmission section considering the influence of power network changes[J]. High Voltage Engineering, 2016, 42(1): 289-295.
[4] 王彬,郭文鑫,向德军,等.基于改进支持向量机和两步式聚类分析的电网关键断面辨识和精细规则生成方法[J].电力自动化设备,2017,37(9):166-170.WANG Bin, GUO Wenxin, XIANG Dejun, et al. Grid critical section detection and fine operational rule generation based on improved supported vector machine and two-step clustering analysis[J]. Electric Power Automation Equipment, 2017, 37(9): 166-170.
[5] 苗田,郑超,马世英,等.适应主导薄弱断面迁移的暂态稳定控制[J].电力系统保护与控制,2016,44(19):41-48.MIAO Tian, ZHENG Chao, MA Shiying, et al. Transient stability control adapting to dominant weak section migration[J]. Power System Protection and Control, 2016, 44(19): 41-48.
[6] 牟颖,张保会,薄志谦.防止输电断面连锁过载的快速控制算法[J].电力系统自动化,2017,41(3):39-45.DOI:10.7500/AEPS20160710004.MOU Ying, ZHANG Baohui, BO Zhiqian. Fast control algorithm for preventing cascading overload on transmission section[J]. Automation of Electric Power Systems, 2017, 41(3): 39-45. DOI: 10.7500/AEPS20160710004.
[7] 方勇杰,崔晓丹,王胜明,等.暂态稳定极限耦合的多个输电断面极限功率协调计算[J].电力系统自动化,2015,39(22):53-58.FANG Yongjie, CUI Xiaodan, WANG Shengming, et al. Coordinated limit power calculation of multi-sections with transient stability limit coupling[J]. Automation of Electric Power Systems, 2015, 39(22): 53-58.
[8] 徐泰山,彭慧敏,苏寅生,等.基于并行模式的关联输电断面极限功率计算[J].电力系统自动化,2012,36(7):66-70.XU Taishan, PENG Huimin, SU Yinsheng, et al. Limit power calculation of correlative transmission interfaces based on a parallel model[J]. Automation of Electric Power Systems, 2012, 36(7): 66-70.
[9] 梁艳红,张文朝,李付强,等.链式电网动态稳定下多断面耦合特性研究[J].电力系统保护与控制,2017,45(4):107-113.LIANG Yanhong, ZHANG Wenchao, LI Fuqiang, et al. Research on multi-sections coupling characteristics of chain network dynamic stability[J]. Power System Protection and Control, 2017, 45(4): 107-113.
[10] 徐泰山,鲍颜红,苏寅生,等.暂态稳定断面功率极限区间和关联度指标计算[J].电力系统自动化,2016,40(20):154-160.XU Taishan, BAO Yanhong, SU Yinsheng, et al. Calculation of power limit interval and correlation degree for transient stability section[J]. Automation of Electric Power Systems, 2016, 40(20): 154-160.
[11] 霍超,崔晓丹,牛拴保,等.一种与直流暂态稳定强相关的交流断面识别方法[J].电力系统保护与控制,2016,44(17):83-89.HUO Chao, CUI Xiaodan, NIU Shuanbao, et al. A quantitative assessment method for degree of transient stability coupling of DC and AC transmission sections[J]. Power System Protection and Control, 2016, 44(17): 83-89.
[12] 姜臻.电力系统输电断面及故障评估关键技术研究[D].武汉:华中科技大学,2014.JIANG Zhen. Studies on key assessment technology of transmission sections and faults in power system[D]. Wuhan: Huazhong University of Science and Technology, 2014.
[13] 方竹,白晓民,丁剑,等.电力系统关键输电断面的动态搜索算法[C]//第十一届全国电工数学学术年会论文集,2007年11月23日,福州,中国:223-231.FANG Zhu, BAI Xiaomin, DING Jian, et al. Dynamic search algorithm of key transmission section of power system[C]//Proceedings of the 11th National Annual Conference on Electrotechnics and Mathematics, November 23, 2007, Fuzhou, China: 223-231.
[14] 周德才,张保会,姚峰,等.基于图论的输电断面快速搜索[J].中国电机工程学报,2006,26(12):32-38.ZHOU Decai, ZHANG Baohui, YAO Feng, et al. Fast search for transmission section based on graph theory[J]. Proceedings of the CSEE, 2006, 26(12): 32-38.
[15] 崔晓丹,张红丽,方勇杰,等.暂态功角弱稳定模式辨识及其协调紧急控制策略[J].电力系统自动化,2018,42(1):91-97.DOI:10.7500/AEPS20170512004.CUI Xiaodan, ZHANG Hongli, FANG Yongjie, et al. Weak stability mode identification of transient power angle and its emergency control strategy[J]. Automation of Electric Power Systems, 2018, 42(1): 91-97. DOI: 10.7500/AEPS20170512004.