基于柔性负荷及UPFC的低频振荡抑制策略
|
摘要
随着电力系统结构日益复杂,越来越多的区域电网逐渐实现互联。如何提高电力系统稳定性、供电可靠性成为急需解决的问题。低频振荡是随着电网互联而产生的,给电网安全稳定运行带来了巨大的挑战。研究了大规模柔性负荷及统一潮流控制器(UPFC)相结合的协同控制策略,抑制电力系统低频振荡。建立基于频率反馈的大规模柔性负荷控制策略,并针对UPFC串联侧设计基于功率反馈附加控制策略。最后采用遗传算法对柔性负荷与UPFC协同控制策略的各参数进行优化,得到最优协同控制策略。通过算例验证了该控制策略的有效性。
With the increasing complexity of the power system, more and more regional power grids are connected with each other. Hence, how to improve the stability and reliability of the power system is in urgent need to be solved. Low frequency oscillation, generated from the connection of different grids, brings high challenge to the safe and stable operation of the power grids. In this paper, the collaborative control strategy of large-scale flexible load and Unified Power Flow Controller(UPFC) is studied to suppress the low-frequency oscillation of the power system. The control strategy for large-scale flexible load based on frequency feedback is established, and the additional control strategy based on active-power feedback is designed at the UPFC series side. Finally, genetic algorithm is adopted to optimize the parameters of the cooperative control strategy, so as to develop an optimal cooperative control strategy. The proposed method is validated by numerous examples.
With the increasing complexity of the power system, more and more regional power grids are connected with each other. Hence, how to improve the stability and reliability of the power system is in urgent need to be solved. Low frequency oscillation, generated from the connection of different grids, brings high challenge to the safe and stable operation of the power grids. In this paper, the collaborative control strategy of large-scale flexible load and Unified Power Flow Controller(UPFC) is studied to suppress the low-frequency oscillation of the power system. The control strategy for large-scale flexible load based on frequency feedback is established, and the additional control strategy based on active-power feedback is designed at the UPFC series side. Finally, genetic algorithm is adopted to optimize the parameters of the cooperative control strategy, so as to develop an optimal cooperative control strategy. The proposed method is validated by numerous examples.
引文
[1]CHEN C L,HSU Y Y.Coordinated synthesis of multimachine power system stabilizer using an efficient decentralized modal control(DMC)algorithm[J].IEEETransactions on Power Systems,2007,2(3):543-550.
[2]吴峰,鲁晓帆,陈维荣,等.电力系统稳定器参数优化的研究[J].电力系统保护与控制,2010,38(5):29-33.WU Feng,LU Xiaofan,CHEN Weirong,et al.Research of parameter optimization of power system stabilizer[J].Power System Protection and Control,2010,38(5):29-33.
[3]ZHANG C,KE D,SUN Y,et al.Coordinated supplementary damping control of DFIG and PSS to suppress inter-area oscillations with optimally controlled plant dynamics[J].IEEE Transactions on Sustainable Energy,2018,9(2):780-791.
[4]BARRIOS-MARTíNEZ E,áNGELES-CAMACHO C.Technical comparison of FACTS controllers in parallel connection[J].Journal of Applied Research&Technology,2017,15(1):36-44.
[5]GHORBANI A,EBRAHIMI S Y,GHORBANI M.Active power based distance protection scheme in the presence of series compensators[J].Protection and Control of Modern Power Systems,2017,2(2):57-69.DOI:10.1186/s41601-017-0034-4.
[6]常海军,侯玉强,柯贤波,等.综合FACTS和HVDC协调优化的大规模风电脱网控制方法[J].电力系统保护与控制,2017,45(13):78-84.CHANG Haijun,HOU Yuqiang,KE Xianbo,et al.Amethod of synthesizing coordinated optimization between FACTS and HVDC for curbing large-scale wind turbine tripping[J].Power System Protection and Control,2017,45(13):78-84.
[7]CHAKRAVARTHY S K.Low frequency oscillations in a TCSC system[J].IEEE Power Engineering Review,1999,19(4):55-57.
[8]郑丽平,匡洪海,张曙云,等.TCSC-STATCOM控制对风电并网系统电压稳定性的改善[J].电力系统保护与控制,2017,45(22):90-95.ZHENG Liping,KUANG Honghai,ZHANG Shuyun,et al.Voltage stability improvement of wind power integrated system using TCSC-STATCOM control[J].Power System Protection and Control,2017,45(22):90-95.
[9]CHEN Baoping,LIN Tao,CHEN Rusi,et al.Coordinative optimization of multi-channel PSS and TCSC damping controller to suppress the low-frequency and subsynchronous oscillation[C]//2016 IEEE Power and Energy Society General Meeting(PESGM),July 17-21,2016,Boston,MA,USA:1-5.
[10]WANG L,CHANG C H,KUAN B L,et al.Stability improvement of a two-area power system connected with an integrated onshore and offshore wind farm using a STATCOM[J].IEEE Transactions on Industry Applications,2017,53(2):867-877.
[11]KOYAMA Y,HASEGAWA R,ARAI T,et al.One-pulse control for STATCOM with delta-connected modular multilevel converter[J].IEEJ Transactions on Industry Applications,2017,137(3):246-255.
[12]WANG L,CHANG C H,PROKHOROV A V.Stability improvement of a two-area power system connected with an integrated onshore and offshore wind farm using a STATCOM[C]//2016 IEEE Industry Applications Society Annual Meeting,October 2-6,2016,Portland,OR,USA:1-9.
[13]THIRUMALAIVASAN R,PRABHU N,JANAKI M,et al.Analysis of subsynchronous resonance with generalized unified power flow controller[J].International Journal of Electrical Power&Energy Systems,2013,53(1):623-631.
[14]DASH P K,PATNAIK R K,MISHRA S P.Adaptive fractional integral terminal sliding mode power control of UPFC in DFIG wind farm penetrated multimachine power system[J].Protection and Control of Modern Power Systems,2018,3(3):79-92.DOI:10.1186/s41601-018-0079-z.
[15]李林,宋宗勋,李峰,等.抑制区域间低频振荡的UPFC模糊滑模控制器[J].电力系统保护与控制,2017,45(10):104-109.LI Lin,SONG Zongxun,LI Feng,et al.UPFC fuzzy sliding mode controller for damping inter-area low frequency oscillation[J].Power System Protection and Control,2017,45(10):104-109.
[16]MOLINA-GARCIA A,BOUFFARD F,KIRSCHEN D S.Decentralized demand-side contribution to primary frequency control[J].IEEE Transactions on Power Systems,2011,26(1):411-419.
[17]包宇庆,李扬,王春宁,等.需求响应参与大规模风电接入下的电力系统频率调节研究[J].电力系统保护与控制,2015,43(4):32-37.BAO Yuqing,LI Yang,WANG Chunning,et al.On demand response participating in the frequency control of the grid under high wind penetration[J].Power System Protection and Control,2015,43(4):32-37.
[18]BAO Yuqing,LI Yang,HONG Yingyi,et al.Design of a hybrid hierarchical demand response control scheme for the frequency control[J].IET Generation,Transmission&Distribution,2015,9(15):2303-2310.
[19]HUANG H,LI F.Sensitivity analysis of load-damping characteristic in power system frequency regulation[J].IEEE Transactions on Power Systems,2013,28(2):1324-1335.
[20]张健南,林涛,余光正,等.大规模电力系统阻尼控制器协调优化方法[J].电网技术,2014,38(9):2466-2472.ZHANG Jiannan,LIN Tao,YU Guangzheng,et al.Coordinated optimization of damping controllers in large-scale power system[J].Power System Technology,2014,38(9):2466-2472.
[21]KUNDUR P.Power system stability and control[M].Palo Alto,CA:EPRI,1994.
[2]吴峰,鲁晓帆,陈维荣,等.电力系统稳定器参数优化的研究[J].电力系统保护与控制,2010,38(5):29-33.WU Feng,LU Xiaofan,CHEN Weirong,et al.Research of parameter optimization of power system stabilizer[J].Power System Protection and Control,2010,38(5):29-33.
[3]ZHANG C,KE D,SUN Y,et al.Coordinated supplementary damping control of DFIG and PSS to suppress inter-area oscillations with optimally controlled plant dynamics[J].IEEE Transactions on Sustainable Energy,2018,9(2):780-791.
[4]BARRIOS-MARTíNEZ E,áNGELES-CAMACHO C.Technical comparison of FACTS controllers in parallel connection[J].Journal of Applied Research&Technology,2017,15(1):36-44.
[5]GHORBANI A,EBRAHIMI S Y,GHORBANI M.Active power based distance protection scheme in the presence of series compensators[J].Protection and Control of Modern Power Systems,2017,2(2):57-69.DOI:10.1186/s41601-017-0034-4.
[6]常海军,侯玉强,柯贤波,等.综合FACTS和HVDC协调优化的大规模风电脱网控制方法[J].电力系统保护与控制,2017,45(13):78-84.CHANG Haijun,HOU Yuqiang,KE Xianbo,et al.Amethod of synthesizing coordinated optimization between FACTS and HVDC for curbing large-scale wind turbine tripping[J].Power System Protection and Control,2017,45(13):78-84.
[7]CHAKRAVARTHY S K.Low frequency oscillations in a TCSC system[J].IEEE Power Engineering Review,1999,19(4):55-57.
[8]郑丽平,匡洪海,张曙云,等.TCSC-STATCOM控制对风电并网系统电压稳定性的改善[J].电力系统保护与控制,2017,45(22):90-95.ZHENG Liping,KUANG Honghai,ZHANG Shuyun,et al.Voltage stability improvement of wind power integrated system using TCSC-STATCOM control[J].Power System Protection and Control,2017,45(22):90-95.
[9]CHEN Baoping,LIN Tao,CHEN Rusi,et al.Coordinative optimization of multi-channel PSS and TCSC damping controller to suppress the low-frequency and subsynchronous oscillation[C]//2016 IEEE Power and Energy Society General Meeting(PESGM),July 17-21,2016,Boston,MA,USA:1-5.
[10]WANG L,CHANG C H,KUAN B L,et al.Stability improvement of a two-area power system connected with an integrated onshore and offshore wind farm using a STATCOM[J].IEEE Transactions on Industry Applications,2017,53(2):867-877.
[11]KOYAMA Y,HASEGAWA R,ARAI T,et al.One-pulse control for STATCOM with delta-connected modular multilevel converter[J].IEEJ Transactions on Industry Applications,2017,137(3):246-255.
[12]WANG L,CHANG C H,PROKHOROV A V.Stability improvement of a two-area power system connected with an integrated onshore and offshore wind farm using a STATCOM[C]//2016 IEEE Industry Applications Society Annual Meeting,October 2-6,2016,Portland,OR,USA:1-9.
[13]THIRUMALAIVASAN R,PRABHU N,JANAKI M,et al.Analysis of subsynchronous resonance with generalized unified power flow controller[J].International Journal of Electrical Power&Energy Systems,2013,53(1):623-631.
[14]DASH P K,PATNAIK R K,MISHRA S P.Adaptive fractional integral terminal sliding mode power control of UPFC in DFIG wind farm penetrated multimachine power system[J].Protection and Control of Modern Power Systems,2018,3(3):79-92.DOI:10.1186/s41601-018-0079-z.
[15]李林,宋宗勋,李峰,等.抑制区域间低频振荡的UPFC模糊滑模控制器[J].电力系统保护与控制,2017,45(10):104-109.LI Lin,SONG Zongxun,LI Feng,et al.UPFC fuzzy sliding mode controller for damping inter-area low frequency oscillation[J].Power System Protection and Control,2017,45(10):104-109.
[16]MOLINA-GARCIA A,BOUFFARD F,KIRSCHEN D S.Decentralized demand-side contribution to primary frequency control[J].IEEE Transactions on Power Systems,2011,26(1):411-419.
[17]包宇庆,李扬,王春宁,等.需求响应参与大规模风电接入下的电力系统频率调节研究[J].电力系统保护与控制,2015,43(4):32-37.BAO Yuqing,LI Yang,WANG Chunning,et al.On demand response participating in the frequency control of the grid under high wind penetration[J].Power System Protection and Control,2015,43(4):32-37.
[18]BAO Yuqing,LI Yang,HONG Yingyi,et al.Design of a hybrid hierarchical demand response control scheme for the frequency control[J].IET Generation,Transmission&Distribution,2015,9(15):2303-2310.
[19]HUANG H,LI F.Sensitivity analysis of load-damping characteristic in power system frequency regulation[J].IEEE Transactions on Power Systems,2013,28(2):1324-1335.
[20]张健南,林涛,余光正,等.大规模电力系统阻尼控制器协调优化方法[J].电网技术,2014,38(9):2466-2472.ZHANG Jiannan,LIN Tao,YU Guangzheng,et al.Coordinated optimization of damping controllers in large-scale power system[J].Power System Technology,2014,38(9):2466-2472.
[21]KUNDUR P.Power system stability and control[M].Palo Alto,CA:EPRI,1994.