蒙西电网动态稳定问题分析及稳定措施研究
|
摘要
为解决蒙西电网运行中日益严重的动态稳定问题,先以"单机-无穷大"系统为例分析了系统发生低频振荡的机理。再针对蒙西电网运行中出现的动态稳定问题,从改善电网结构、调整输电方式、优化PSS参数等方面提出了解决系统低频振荡的措施。并采用电网调度数据对所提出的各种措施进行了仿真计算分析。计算结果表明所提出的措施对于抑制蒙西电网低频振荡现象效果显著,可有效地提高蒙西电网的动态稳定水平。最后再结合工程投资、建设工期等实际问题,对上述措施进行了简要比较,并给出优选建议?
The dynamic stability issue of West Inner Mongolia Power Grid becomes increasingly severe. To solve this problem, the paper uses "single machine-infinite bus" system as an example for analyzing the mechanism of low frequency oscillation of the system. Aiming at the dynamic stability issues of West Inner Mongolia Power Grid, it proposes the solutions to lower frequency oscillation of the system, including improving power grid structure, adjusting power transmission mode and optimizing parameters of PSS. Using dispatching data of power grid to do simulation calculations, this paper analyzes the proposed solutions. The calculation results show that the proposed solutions have pronounced effect on restraining the low frequency oscillation of Power Grid, can efficiently improve the dynamic stability of Power Grid, and are actually operational in engineering. Finally, in combination with actual issues of investment and duration in engineering construction, this paper gives the brief comparison and selected advices on all solutions above.
The dynamic stability issue of West Inner Mongolia Power Grid becomes increasingly severe. To solve this problem, the paper uses "single machine-infinite bus" system as an example for analyzing the mechanism of low frequency oscillation of the system. Aiming at the dynamic stability issues of West Inner Mongolia Power Grid, it proposes the solutions to lower frequency oscillation of the system, including improving power grid structure, adjusting power transmission mode and optimizing parameters of PSS. Using dispatching data of power grid to do simulation calculations, this paper analyzes the proposed solutions. The calculation results show that the proposed solutions have pronounced effect on restraining the low frequency oscillation of Power Grid, can efficiently improve the dynamic stability of Power Grid, and are actually operational in engineering. Finally, in combination with actual issues of investment and duration in engineering construction, this paper gives the brief comparison and selected advices on all solutions above.
引文
[1]DEMELLO F P,CONCORDIA C.Concepts of synchronous machine stability as affected by excitation control[J].IEEE Transactions on Power Apparatus and Systems,1969,PAS-88(4):316-329.
[2]朱方,赵红光,刘增煌,等.大区电网互联对电力系统动态稳定型的影响[J].中国电机工程学报,2007,27(1):1-7.ZHU Fang,ZHAO Hongguang,LIU Zenghuang,et al.The influence of large power grid interconnected on power system dynamic stability[J].Proceedings of the CSEE,2007,27(1):1-7.
[3]陈刚,何潜,段晓,等.电力系统低频振荡分析与抑制综述[J].南方电网技术,2010,4(3):17-22.CHEN Gang,HE Qian,DUAN Xiao,et al.Overview on analysis and control of low frequency oscillation in power systems[J].Southern Power System Technology,2010,4(3):17-22.
[4]余贻鑫,李鹏.大区电网弱互联对互联系统阻尼和动态稳定性的影响[J].中国电机工程学报,2005,25(11):6-11.YU Yixin,LI Peng.The impact of weak interconnection of bulk power grids to damping and dynamic stability of power systems[J].Proceedings of the CSEE,2005,25(11):6-11.
[5]刘取.电力系统稳定性及发电机励磁控制[M].北京:中国电力出版社,2011.
[6]杨培宏,刘文颖,张继红.PSS和TCSC联合抑制互联电网低频振荡[J].电力系统保护与控制,2011,39(12):11-16.YANG Peihong,LIU Wenying,ZHANG Jihong.Restraining low frequency oscillation of interconnected power grid using PSS and TCSC[J].Power System Protection and Control,2011,39(12):11-16.
[7]刘书铭,李陈营,李琼林.电力系统串联谐波谐振的特性分析与灵敏度计算[J].电力系统保护与控制,2015,43(9):21-27.LIU Shuming,LI Chenying,LI Qionglin.Characteristics analysis of power system series harmonic resonance and sensitivity calculation[J].Power System Protection and Control,2015,43(9):21-27.
[8]李雪亮,张杰,王云鹏.考虑受端励磁系统的交直流稳定性分析[J].电网与清洁能源,2015,31(10):9-15.LI Xueliang,ZHANG Jie,WANG Yunpeng.Stability analysis of HVDC systems considering effects of excitation voltage control of receiving system[J].Power System and Clean Energy,2015,31(10):9-15.
[9]周二专,王宗淦,陈寿荪.多机电力系统PSS设计综合理论和方法研究[J].中国电机工程学报,1988,8(5):28-36.ZHOU Erzhuan,WANG Zonggan,CHEN Shousun.Theory and method for designing and synthesizing pss in multimachine power systems[J].Proceedings of the CSEE,1988,8(5):28-36.
[10]刘涛,宋新立.特征值灵敏度方法及其在电力系统小干扰稳定分析中的应用[J].电网技术,2010,34(4):82-87.LIU Tao,SONG Xinli.Eigenvalue sensitivity and its application in power system small signal stability[J].Power System Technology,2010,34(4):82-87.
[11]尹波,庞松龄,杨眉.基于阻尼灵敏度指标的PSS参数优化[J].电力系统保护与控制,2011,39(8):28-32.YIN Bo,PANG Songling,YANG Mei.Optimization of PSS parameters based on damping sensitivity indices[J].Power System Protection and Control,2011,39(8):28-32.
[12]李生福,张爱玲,李少华.“风火打捆”交直流外送系统的暂态稳定控制研究[J].电力系统保护与控制,2015,43(1):108-114.LI Shenfu,ZHANG Ailing,LI Shaohua.Study on transient stability control for wind-thermal-bundled power transmitted by AC/DC system[J].Power System Protection and Control,2015,43(1):108-114.
[13]丁明,田龙刚,潘浩.交直流混合微电网运行控制策略研究[J].电力系统保护与控制,2015,43(9):1-8.DING Ming,TIAN Longgang,PAN Hao.Research on control strategy of hybrid AC/DC microgrid[J].Power System Protection and Control,2015,43(9):1-8.
[2]朱方,赵红光,刘增煌,等.大区电网互联对电力系统动态稳定型的影响[J].中国电机工程学报,2007,27(1):1-7.ZHU Fang,ZHAO Hongguang,LIU Zenghuang,et al.The influence of large power grid interconnected on power system dynamic stability[J].Proceedings of the CSEE,2007,27(1):1-7.
[3]陈刚,何潜,段晓,等.电力系统低频振荡分析与抑制综述[J].南方电网技术,2010,4(3):17-22.CHEN Gang,HE Qian,DUAN Xiao,et al.Overview on analysis and control of low frequency oscillation in power systems[J].Southern Power System Technology,2010,4(3):17-22.
[4]余贻鑫,李鹏.大区电网弱互联对互联系统阻尼和动态稳定性的影响[J].中国电机工程学报,2005,25(11):6-11.YU Yixin,LI Peng.The impact of weak interconnection of bulk power grids to damping and dynamic stability of power systems[J].Proceedings of the CSEE,2005,25(11):6-11.
[5]刘取.电力系统稳定性及发电机励磁控制[M].北京:中国电力出版社,2011.
[6]杨培宏,刘文颖,张继红.PSS和TCSC联合抑制互联电网低频振荡[J].电力系统保护与控制,2011,39(12):11-16.YANG Peihong,LIU Wenying,ZHANG Jihong.Restraining low frequency oscillation of interconnected power grid using PSS and TCSC[J].Power System Protection and Control,2011,39(12):11-16.
[7]刘书铭,李陈营,李琼林.电力系统串联谐波谐振的特性分析与灵敏度计算[J].电力系统保护与控制,2015,43(9):21-27.LIU Shuming,LI Chenying,LI Qionglin.Characteristics analysis of power system series harmonic resonance and sensitivity calculation[J].Power System Protection and Control,2015,43(9):21-27.
[8]李雪亮,张杰,王云鹏.考虑受端励磁系统的交直流稳定性分析[J].电网与清洁能源,2015,31(10):9-15.LI Xueliang,ZHANG Jie,WANG Yunpeng.Stability analysis of HVDC systems considering effects of excitation voltage control of receiving system[J].Power System and Clean Energy,2015,31(10):9-15.
[9]周二专,王宗淦,陈寿荪.多机电力系统PSS设计综合理论和方法研究[J].中国电机工程学报,1988,8(5):28-36.ZHOU Erzhuan,WANG Zonggan,CHEN Shousun.Theory and method for designing and synthesizing pss in multimachine power systems[J].Proceedings of the CSEE,1988,8(5):28-36.
[10]刘涛,宋新立.特征值灵敏度方法及其在电力系统小干扰稳定分析中的应用[J].电网技术,2010,34(4):82-87.LIU Tao,SONG Xinli.Eigenvalue sensitivity and its application in power system small signal stability[J].Power System Technology,2010,34(4):82-87.
[11]尹波,庞松龄,杨眉.基于阻尼灵敏度指标的PSS参数优化[J].电力系统保护与控制,2011,39(8):28-32.YIN Bo,PANG Songling,YANG Mei.Optimization of PSS parameters based on damping sensitivity indices[J].Power System Protection and Control,2011,39(8):28-32.
[12]李生福,张爱玲,李少华.“风火打捆”交直流外送系统的暂态稳定控制研究[J].电力系统保护与控制,2015,43(1):108-114.LI Shenfu,ZHANG Ailing,LI Shaohua.Study on transient stability control for wind-thermal-bundled power transmitted by AC/DC system[J].Power System Protection and Control,2015,43(1):108-114.
[13]丁明,田龙刚,潘浩.交直流混合微电网运行控制策略研究[J].电力系统保护与控制,2015,43(9):1-8.DING Ming,TIAN Longgang,PAN Hao.Research on control strategy of hybrid AC/DC microgrid[J].Power System Protection and Control,2015,43(9):1-8.