计及FACTS的暂态安全稳定紧急控制策略
|
摘要
FACTS控制与传统控制手段缺乏协调可能威胁电网安全稳定。离线控制策略表在不考虑FACTS设备条件下的断面极限过于保守,紧急控制措施较重;而考虑FACTS设备全部容量均可用于暂态过程时,又会导致断面极限过于乐观,紧急控制措施不足。提出了计及FACTS的暂态安全稳定紧急控制策略,将FACTS参与电网暂态稳定控制分为FACTS设备主动调节、紧急执行修正策略和分轮次追加控制3个阶段,将传统暂态安全稳定控制和FACTS控制有机结合,既保证了系统的安全性又提高了控制措施的经济性。以可控串补为例,通过实际电网仿真验证了所提策略,仿真结果表明,通过可控串补参与电网暂态稳定控制,降低了暂态过程中的加速能量,可减少传统暂态稳定控制的切机量,同时维持了电网的稳定运行。
The lack of coordination between FACTS control and conventional control may threaten the security and stability of power grid.Without taking FACTS into consideration,the off-line control strategy is too conservative and the emergency control measures are heavy.Meanwhile,if the capacity of FACTS equipment is fully used in the transient process,the section limit will be so optimistic that the emergency control measures may be insufficient.A transient stability emergency control strategy is proposed with consideration of FACTS,which divides the FACTS participated transient stability control into three stages,including FACTS equipment active control,emergency execution correction strategy and in-turn additional control.With the combination of the conventional transient stability control and FACTS control,the system safety is ensured and the economic efficiency of the control measures is improved.The proposed strategy is verified by simulation of a practical power grid.The simulation results show that the participation of the FACTS in the power grid transient stability control can decrease the acceleration energy of the transient process and reduce the cutting-off number of generators while maintaining the stability of the power grid.
The lack of coordination between FACTS control and conventional control may threaten the security and stability of power grid.Without taking FACTS into consideration,the off-line control strategy is too conservative and the emergency control measures are heavy.Meanwhile,if the capacity of FACTS equipment is fully used in the transient process,the section limit will be so optimistic that the emergency control measures may be insufficient.A transient stability emergency control strategy is proposed with consideration of FACTS,which divides the FACTS participated transient stability control into three stages,including FACTS equipment active control,emergency execution correction strategy and in-turn additional control.With the combination of the conventional transient stability control and FACTS control,the system safety is ensured and the economic efficiency of the control measures is improved.The proposed strategy is verified by simulation of a practical power grid.The simulation results show that the participation of the FACTS in the power grid transient stability control can decrease the acceleration energy of the transient process and reduce the cutting-off number of generators while maintaining the stability of the power grid.
引文
[1]CLARK K,FARDANESH B,ADAPA R.Thyristor controlled series compensation application study-control interaction considerations[J].IEEE Transactions on Power Delivery,1995,10(2):1031-1037.
[2]刘海军,任震.静止无功补偿器提高电力系统暂态电压稳定性[J].电力系统自动化,1993,17(12):37-40.LIU Haijun,REN Zhen.A study of transient voltage stabilities improvement by static var compensators in electric power systems[J].Automation of Electric Power Systems,1993,17(12):37-40.
[3]霍超,杨永前,牛拴保,等.一种新的可提高电力系统暂态稳定性的SVC模糊逻辑控制器[J].陕西电力,2015,43(3):76-82.HUO Chao,YANG Yongqian,NIU Shuanbao,et al.A novel SVCfuzzy logic controller to improve the transient stability of power system[J].Shaanxi Electric Power,2015,43(3):76-82.
[4]胡文霞.计及TCSC装置的电力系统电压稳定性研究[D].南宁:广西大学,2008.
[5]张靖,程时杰,文劲宇,等.通过选择SVC安装地点提高电压静态稳定性的新方法[J].中国电机工程学报,2007,27(34):7-11.ZHANG Jing,CHENG Shijie,WEN Jinyu,et al.A novel steadystate voltage stability enhancement method based on SVCallocation[J].Proceedings of the CSEE,2007,27(34):7-11.
[6]李海琛,刘明波,林舜江.考虑暂态电压安全的STATCOM安装地点选择和容量优化[J].电力系统保护与控制,2011,39(5):69-76,80.LI Haichen,LIU Mingbo,LIN Shunjiang.Selection of STATCOM’s installation site and capacity optimization considering transient voltage security[J].Power System Protection and Control,2011,39(5):69-76,80.
[7]吴杰,孙伟,颜秉超,等.应用STATCOM提高风电场低电压穿越能力[J].电力系统保护与控制,2011,39(24):47-51,71.WU Jie,SUN Wei,YAN Bingchao,et al.Improvement of low voltage ride through capability of wind farm using STATCOM[J].Power System Protection and Control,2011,39(24):47-51,71.
[8]LEI X,LI X,POVH D.A nonlinear control for coordinating TCSCand generator excitation to enhance the transient stability of long transmission systems[J].Electric Power System Research,2001,59(2):103-109.
[9]MAHRAN A R,HOGG B W,El-SAYED M L.Co-ordinated control of synchronous generator excitation and static var compensator[J].IEEE Trans on Energy Conversion,1992,7(4):615-622.
[10]苏建设,柯宁,陈陈.提高暂态稳定的励磁与FACTS协调策略设计[J].中国电机工程学报,2003,23(9):6-10.SU Jianshe,KE Ning,CHEN Chen.Coordinated design of generator excitation and FACTS for transient stability enhancement[J].Proceedings of the CSEE,2003,23(9):6-10.
[11]王海风,李乃湖,陈珩.灵活交流输电稳定器安装地点和反馈信号的鲁棒性及正互影响[J].中国电机工程学报,1999,19(10):37-41.WANG Haifeng,LI Naihu,CHEN Heng.On the robustness and positive interactions in selecting the installing locations and feedback signals of FACTS based stabilizers[J].Proceedings of the CSEE,1999,19(10):37-41.
[12]柯宁,苏建设,陈陈.TCSC与SVC用于提高输电系统暂态稳定性的仿真研究[J].电力系统自动化,2004,28(1):20-23.KE Ning,SU Jianshe,CHEN Chen.Simulation study of TCSC and SVC to improve transient stability of transmission system[J].Automation of Electric Power Systems,2004,28(1):20-23.
[13]李亮,江全元,邹振宇.多机电力系统中多台TCSC控制器间的交互影响研究[J].电网技术,2005,29(9):10-14.LI Liang,JIANG Quanyuan,ZOU Zhenyu.Research on interaction among controllers in multi-machine power system[J].Power System Technology,2005,29(9):10-14.
[14]苏建设,陈陈.基于提高暂态稳定性的TCSC与SVC协调设计[J].上海交通大学学报,2003,37(9):1358-1361.SU Jianshe,CHEN Chen.Coordinated design of TCSC and SVC for transient stability enhancement[J].Journal of Shanghai Jiaotong University,2003,37(9):1358-1361.
[15]胡臻达,武守远,戴朝波.特高压输电线路用新型TCSC方案及其控制策略研究[J].电网技术,2012,36(9):73-80.HU Zhenda,WU Shouyuan,DAI Chaobo.A novel TCSC scheme for UHV transmission line and its control strategy[J].Power System Technology,2012,36(9):73-80.
[16]张晓天,侯凯元.采用可控串补的远距离输电系统稳定性研究[J].现代电力,2011,28(3):12-16.ZHANG Xiaotian,HOU Kaiyuan.Study on the stability of long distance transmission system with TCSC[J].Modern Electric Power,2011,28(3):12-16.
[17]尹忠东,童陆园,郭春林,等.基于暂态稳定控制的TCSC装置特性研究[J].电力系统自动化,1999,23(6):19-25.YIN Zhongdong,TONG Luyuan,GUO Chunlin,et al.Research on characteristics of TCSC device based on transient stability control[J].Automation of Electric Power Systems,1999,23(6):19-25.
[18]张采,周孝信.可控串补系统的稳定控制[J].中国电力,1998,31(3):3-6,22.ZHANG Cai,ZHOU Xiaoxin.Stability control on thyristor controlled series compensation system[J].Electric Power,1998,31(3):3-6,22.
[19]柯宁,苏建设,陈陈,等.用可控串补提高暂态稳定性的仿真研究[J].华东电力,2004,32(5):17-20.KE Ning,SU Jianshe,CHEN Chen,et al.Simulation study of TCSCbased on energy function for transient stability enhancement[J].East China Electric Power,2004,32(5):17-20.
[20]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):1-5,77.FANG Yongjie.Analysis on trends in emergency control technology of cross-regional interconnected power systems[J].Automation of Electric Power Systems,2011,35(15):1-5,77.
[2]刘海军,任震.静止无功补偿器提高电力系统暂态电压稳定性[J].电力系统自动化,1993,17(12):37-40.LIU Haijun,REN Zhen.A study of transient voltage stabilities improvement by static var compensators in electric power systems[J].Automation of Electric Power Systems,1993,17(12):37-40.
[3]霍超,杨永前,牛拴保,等.一种新的可提高电力系统暂态稳定性的SVC模糊逻辑控制器[J].陕西电力,2015,43(3):76-82.HUO Chao,YANG Yongqian,NIU Shuanbao,et al.A novel SVCfuzzy logic controller to improve the transient stability of power system[J].Shaanxi Electric Power,2015,43(3):76-82.
[4]胡文霞.计及TCSC装置的电力系统电压稳定性研究[D].南宁:广西大学,2008.
[5]张靖,程时杰,文劲宇,等.通过选择SVC安装地点提高电压静态稳定性的新方法[J].中国电机工程学报,2007,27(34):7-11.ZHANG Jing,CHENG Shijie,WEN Jinyu,et al.A novel steadystate voltage stability enhancement method based on SVCallocation[J].Proceedings of the CSEE,2007,27(34):7-11.
[6]李海琛,刘明波,林舜江.考虑暂态电压安全的STATCOM安装地点选择和容量优化[J].电力系统保护与控制,2011,39(5):69-76,80.LI Haichen,LIU Mingbo,LIN Shunjiang.Selection of STATCOM’s installation site and capacity optimization considering transient voltage security[J].Power System Protection and Control,2011,39(5):69-76,80.
[7]吴杰,孙伟,颜秉超,等.应用STATCOM提高风电场低电压穿越能力[J].电力系统保护与控制,2011,39(24):47-51,71.WU Jie,SUN Wei,YAN Bingchao,et al.Improvement of low voltage ride through capability of wind farm using STATCOM[J].Power System Protection and Control,2011,39(24):47-51,71.
[8]LEI X,LI X,POVH D.A nonlinear control for coordinating TCSCand generator excitation to enhance the transient stability of long transmission systems[J].Electric Power System Research,2001,59(2):103-109.
[9]MAHRAN A R,HOGG B W,El-SAYED M L.Co-ordinated control of synchronous generator excitation and static var compensator[J].IEEE Trans on Energy Conversion,1992,7(4):615-622.
[10]苏建设,柯宁,陈陈.提高暂态稳定的励磁与FACTS协调策略设计[J].中国电机工程学报,2003,23(9):6-10.SU Jianshe,KE Ning,CHEN Chen.Coordinated design of generator excitation and FACTS for transient stability enhancement[J].Proceedings of the CSEE,2003,23(9):6-10.
[11]王海风,李乃湖,陈珩.灵活交流输电稳定器安装地点和反馈信号的鲁棒性及正互影响[J].中国电机工程学报,1999,19(10):37-41.WANG Haifeng,LI Naihu,CHEN Heng.On the robustness and positive interactions in selecting the installing locations and feedback signals of FACTS based stabilizers[J].Proceedings of the CSEE,1999,19(10):37-41.
[12]柯宁,苏建设,陈陈.TCSC与SVC用于提高输电系统暂态稳定性的仿真研究[J].电力系统自动化,2004,28(1):20-23.KE Ning,SU Jianshe,CHEN Chen.Simulation study of TCSC and SVC to improve transient stability of transmission system[J].Automation of Electric Power Systems,2004,28(1):20-23.
[13]李亮,江全元,邹振宇.多机电力系统中多台TCSC控制器间的交互影响研究[J].电网技术,2005,29(9):10-14.LI Liang,JIANG Quanyuan,ZOU Zhenyu.Research on interaction among controllers in multi-machine power system[J].Power System Technology,2005,29(9):10-14.
[14]苏建设,陈陈.基于提高暂态稳定性的TCSC与SVC协调设计[J].上海交通大学学报,2003,37(9):1358-1361.SU Jianshe,CHEN Chen.Coordinated design of TCSC and SVC for transient stability enhancement[J].Journal of Shanghai Jiaotong University,2003,37(9):1358-1361.
[15]胡臻达,武守远,戴朝波.特高压输电线路用新型TCSC方案及其控制策略研究[J].电网技术,2012,36(9):73-80.HU Zhenda,WU Shouyuan,DAI Chaobo.A novel TCSC scheme for UHV transmission line and its control strategy[J].Power System Technology,2012,36(9):73-80.
[16]张晓天,侯凯元.采用可控串补的远距离输电系统稳定性研究[J].现代电力,2011,28(3):12-16.ZHANG Xiaotian,HOU Kaiyuan.Study on the stability of long distance transmission system with TCSC[J].Modern Electric Power,2011,28(3):12-16.
[17]尹忠东,童陆园,郭春林,等.基于暂态稳定控制的TCSC装置特性研究[J].电力系统自动化,1999,23(6):19-25.YIN Zhongdong,TONG Luyuan,GUO Chunlin,et al.Research on characteristics of TCSC device based on transient stability control[J].Automation of Electric Power Systems,1999,23(6):19-25.
[18]张采,周孝信.可控串补系统的稳定控制[J].中国电力,1998,31(3):3-6,22.ZHANG Cai,ZHOU Xiaoxin.Stability control on thyristor controlled series compensation system[J].Electric Power,1998,31(3):3-6,22.
[19]柯宁,苏建设,陈陈,等.用可控串补提高暂态稳定性的仿真研究[J].华东电力,2004,32(5):17-20.KE Ning,SU Jianshe,CHEN Chen,et al.Simulation study of TCSCbased on energy function for transient stability enhancement[J].East China Electric Power,2004,32(5):17-20.
[20]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):1-5,77.FANG Yongjie.Analysis on trends in emergency control technology of cross-regional interconnected power systems[J].Automation of Electric Power Systems,2011,35(15):1-5,77.