发电机 励磁系统原理( 1 )
DESCRIPTION
发电机 励磁系统原理( 1 ). 三峡电厂陈小明 [email protected]. 水轮发电厂原理. 大坝、水电厂、水轮机、发电机定子、转子、励磁系统. 水轮发电厂转子. n=60f/P 励磁绕组 ( d 轴) 阻尼绕组( d 轴、 q 轴). 励磁的基本概念. 什么是励磁? 导体切割磁力线感生电动势 e 励磁就是提供一个磁场 B. 4.44: 有效值系数 F: 励磁条件与影响 N: 机端电压影响 Φ: 与励磁电流关系. E=4.44fN Φ. 对于发电机来说,励磁就是产生磁通 Φ. Frequency ( f ) - PowerPoint PPT PresentationTRANSCRIPT
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n=60f/Pddq
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eB
E=4.44fN4.44:F:N::
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GovernorExcitationPmaxPmax/P
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Excitation SystemExcitation Control SystemSynchronous Machine RegulatorExciterSynchronousMachinePowerSystemBlockdiagramm according IEEE
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PID+PSSPSS PID PSS LOPSS Linear Optimal ControlNOPSS Nonlinear Optimal ControlNRPSS Nonlinear Robust Control
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PIDKVGK=100
- GeneratorU , If fU , IE EVoltage RegulatorAVR
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AVRECR/FCRAC/DCSCR
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S101 S106+S107 THYRIPOL
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ACLACFL
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&
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IGBTPN
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=00:ACDC=0:ACDC=1500:DCAC
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UfIfUf0If
- SCR123456123456123400
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1 1.1 1.2 1.32 PSS
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QPQ1212PSS
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,,
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(a)Eq()(Eq=)ECR(b)Eq,EqU(c) Eq()(d)EqEqU(e) U()(f)UEqEq(c) (e)EqUAVR0.40.771.0 Eq900
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1985102200MW220kV130MW1000A170MW11000A170MW2200MW3
- (a)(b)132 abedabcddfed12Eq13bc22dehgdehg mm 2;2+80%=2.5;2.5+80%=3.125;
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- F. P. deMello and C. Concordia. K1DK4K5K2K6K5AVRK5AVR
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PSS
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PSSPSS
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VS AVRK5)AVRUg P 1 2 Ug AVR Uf If P Ug AVR Uf If P AVR+PSS:+ Ug AVR Uf If P
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local model0.52.0Hzinterarea modeltieline model0.10.5Hz 0.52.5Hz 0.22.5Hz 0.12.0Hz
F.D.C.(Power system stabilizer)PSS
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T1T2PSSPSS:AVR(PID)PSS PSSPePf, P,PePff
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PSSPSSPSS1APSS2APSS2B
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PSS
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96810WSCC, . 500Kv, , 130.24Hz,Powertech Lab Inc.()PSSPSS
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11998743PSS
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2200322336377854-4223630MW
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1