附加励磁阻尼控制器对励磁系统的要求分析
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摘要
我国火电基地采用串补技术向负荷中心送电已被验证存在次同步谐振(SSR)问题。为此建立了励磁系统功率单元的时域仿真模型和频域模型,在此基础上分析附加励磁阻尼控制器(SEDC)对功率单元控制模式的要求。通过对功率单元的特性分析、频率特性分析和时域仿真,量化分析励磁系统整流电路触发控制模式对SEDC性能的影响,得到要有效实现SEDC对次同步谐振的阻尼效果,必须要求励磁功率单元采用分相触发模式的结论。
It is already proved that there is subsynchrous resonance(SSR) during power transmission from calfired power plants using series compensation to the load center. Therefore, the time-domain simulation model and frequency-domain model for power unit of excitation system are built, on the basis of which the requirements of the supplementary excitation damping controller(SEDC) on control mode of power unit are analyzed. By analysis of power unit characteristic, frequency characteristic and time-domain simulation, the paper conducts quantitative analysis of the impact of trigger control mode of rectifying circuit on SEDC. It is concluded that phase control mode must be adopted on excitation power unit in order that damping on SSR can be realized.
It is already proved that there is subsynchrous resonance(SSR) during power transmission from calfired power plants using series compensation to the load center. Therefore, the time-domain simulation model and frequency-domain model for power unit of excitation system are built, on the basis of which the requirements of the supplementary excitation damping controller(SEDC) on control mode of power unit are analyzed. By analysis of power unit characteristic, frequency characteristic and time-domain simulation, the paper conducts quantitative analysis of the impact of trigger control mode of rectifying circuit on SEDC. It is concluded that phase control mode must be adopted on excitation power unit in order that damping on SSR can be realized.
引文
[1]刘世宇,谢小荣,王仲鸿.我国火电基地串补输电系统的次同步谐振问题[J].电网技术,2008,32(1):5-8.
[2]陈大宇,赵永林,刘全,等.上都电厂轴系次同步扭振保护系统[J].电力系统保护与控制,2010,38(6):122-125.
[3]O.SAITO,H.MUKAE,K.MUROTANI.Suppression of selfexcited oscillations in series-comopensated transmission lines by excitation control of synchronous machines[J].IEEE Trans.on PAS,1975,Vol.94:1777-1788.
[4]C.E.J.BOWLER,D.H.BAKER,N.A.MINCER,etal.Opera tion and test of the Navajo SSR protective equipment[J].IEEE Trans,on PAS,1978,97(4):1030-1035.
[5]Q.H.LI,D.Z.ZHAO Y.N.YU.A new pole-placement method for excitation control design to damp SSR of a nonidentical two-machine system[J].IEEE Trans.Power Systems,1989,4(3):1176-1181.
[6]WANG L,HSU Y Y.Damping of subsynchronous resonance using excitation controllers and static VAR:a comparison study[J].IEEE Trans.Energy Conversion,1988,3(1):6-13.
[7]HARB A M,WIDYAN M S.Modern nonlinear theory as applied to SSR of the IEEE second benchmark model[C].Proceedings of 2003 IEEE Bologna Power Tech.Conference:Vol 3,Jun 23-26,2003,Bologna,Italy.USA:IEEE,2003:1-7.
[8]HSU Y Y,JENG L H.Damping of subsynchronous oscillations using adaptive controllers tuned by artificial neutral networks[C].IEE Proc.Generation,Transmission and Distribution,1995,142(4):415-422.
[9]汤凡,刘天琪,李兴源.基于蚁群算法的次同步附加励磁阻尼控制器设计[J].电力系统保护与控制,2010,38(19):170-174.
[10]ANAPARTHI K K,PAL B C,El-ZOBAIDI H.Coprime factorisation approach in designing multi-input stabiliser for damping electromechanical oscillations in power systems[C].IEE Proc.Generation,Transmission and Distribution,2005,152(3):301-308.
[11]岑海凤,王西田,杨煜,等.一种用于次同步谐振研究的电力系统外网等值方法[J].电力系统保护与控制,2011,39(4):30-35.
[12]刘世宇,谢小荣,张树卿,等.附加励磁阻尼控制抑制多模态SSR的机理及其关键技术[J].电力系统自动化,2007,31(21):10-14.
[13]张帆,徐政.附加励磁阻尼控制抑制次同步谐振研究[J].电力系统自动化,2007,31(23):24-29.
[14]刘世宇,谢小荣,张东辉.多模态次同步谐振的产生机理与抑制方法[J].清华大学学报(自然科学版),2008,48(4):457-460.
[15]刘世宇,谢小荣,张东辉,等.附加励磁阻尼控制对励磁系统常规功能的影响[J].电力系统自动化,2008,32(7):6-9.
[16]赫卫国,赵大伟,吕宏水,等.附加励磁阻尼控制器与励磁系统常规功能间的相互影响[J].电力系统自动化,2011,35(12):89-94.
[17]郭锡玖,谢小荣,刘世宇,等.上都电厂SEDC提高次同步扭振阻尼的现场试验[J].电力系统自动化,2008,32(10):97-100.
[18]谢小荣,郭锡玖,吴景龙,等.上都电厂串补输电系统附加励磁阻尼控制抑制次同步谐振的现场试验[J].中国电机工程学报,2010,30(1):27-32.
[19]IEEE Committee Report.Excitation System Models for Power System Stability Studies[J].IEEE Trans.on PAS.1981,100(2).
[20]李友善.自动控制原理(上册)[M].北京:国防工业出版社,1980.
[2]陈大宇,赵永林,刘全,等.上都电厂轴系次同步扭振保护系统[J].电力系统保护与控制,2010,38(6):122-125.
[3]O.SAITO,H.MUKAE,K.MUROTANI.Suppression of selfexcited oscillations in series-comopensated transmission lines by excitation control of synchronous machines[J].IEEE Trans.on PAS,1975,Vol.94:1777-1788.
[4]C.E.J.BOWLER,D.H.BAKER,N.A.MINCER,etal.Opera tion and test of the Navajo SSR protective equipment[J].IEEE Trans,on PAS,1978,97(4):1030-1035.
[5]Q.H.LI,D.Z.ZHAO Y.N.YU.A new pole-placement method for excitation control design to damp SSR of a nonidentical two-machine system[J].IEEE Trans.Power Systems,1989,4(3):1176-1181.
[6]WANG L,HSU Y Y.Damping of subsynchronous resonance using excitation controllers and static VAR:a comparison study[J].IEEE Trans.Energy Conversion,1988,3(1):6-13.
[7]HARB A M,WIDYAN M S.Modern nonlinear theory as applied to SSR of the IEEE second benchmark model[C].Proceedings of 2003 IEEE Bologna Power Tech.Conference:Vol 3,Jun 23-26,2003,Bologna,Italy.USA:IEEE,2003:1-7.
[8]HSU Y Y,JENG L H.Damping of subsynchronous oscillations using adaptive controllers tuned by artificial neutral networks[C].IEE Proc.Generation,Transmission and Distribution,1995,142(4):415-422.
[9]汤凡,刘天琪,李兴源.基于蚁群算法的次同步附加励磁阻尼控制器设计[J].电力系统保护与控制,2010,38(19):170-174.
[10]ANAPARTHI K K,PAL B C,El-ZOBAIDI H.Coprime factorisation approach in designing multi-input stabiliser for damping electromechanical oscillations in power systems[C].IEE Proc.Generation,Transmission and Distribution,2005,152(3):301-308.
[11]岑海凤,王西田,杨煜,等.一种用于次同步谐振研究的电力系统外网等值方法[J].电力系统保护与控制,2011,39(4):30-35.
[12]刘世宇,谢小荣,张树卿,等.附加励磁阻尼控制抑制多模态SSR的机理及其关键技术[J].电力系统自动化,2007,31(21):10-14.
[13]张帆,徐政.附加励磁阻尼控制抑制次同步谐振研究[J].电力系统自动化,2007,31(23):24-29.
[14]刘世宇,谢小荣,张东辉.多模态次同步谐振的产生机理与抑制方法[J].清华大学学报(自然科学版),2008,48(4):457-460.
[15]刘世宇,谢小荣,张东辉,等.附加励磁阻尼控制对励磁系统常规功能的影响[J].电力系统自动化,2008,32(7):6-9.
[16]赫卫国,赵大伟,吕宏水,等.附加励磁阻尼控制器与励磁系统常规功能间的相互影响[J].电力系统自动化,2011,35(12):89-94.
[17]郭锡玖,谢小荣,刘世宇,等.上都电厂SEDC提高次同步扭振阻尼的现场试验[J].电力系统自动化,2008,32(10):97-100.
[18]谢小荣,郭锡玖,吴景龙,等.上都电厂串补输电系统附加励磁阻尼控制抑制次同步谐振的现场试验[J].中国电机工程学报,2010,30(1):27-32.
[19]IEEE Committee Report.Excitation System Models for Power System Stability Studies[J].IEEE Trans.on PAS.1981,100(2).
[20]李友善.自动控制原理(上册)[M].北京:国防工业出版社,1980.