公开(公告)号：EP0594833A4

公开(公告)日：1994-11-17

申请号：EP93911285

申请日：1993-05-13

申请人： ELECTRIC POWER RES INST

发明人： BOWLER COLIN E J ,  LARSEN EINAR V ,  BAKER DANIEL H

IPC分类号： H02J3/12 ,  G05F1/20 ,  H02J3/18 ,  H02J3/24 ,  H02P9/10 ,  H02P13/06 ,  H02K11/00

CPC分类号： G05F1/20 ,  H02J3/1814 ,  H02J3/1878 ,  H02J3/24 ,  H02P9/105 ,  H02P13/06 ,  Y02E40/14 ,  Y02E40/18 ,  Y02E40/30

摘要： A subsynchronous resonance mitigation system (20, 200, 300, 400), including a method and apparatus, for damping undesirable subsynchronous resonance oscillations in a generator (208, 210), which, if left unchecked, may damage the shafts of a turbine-generator set. A remote coupling apparatus, such as a thyristor controlled series capacitor (TCSC) system (30, 34 and 35), a sourced inverter device (302), or a static phase shifter (420), is coupled to the generator (208, 210) by a transmission line (24, 204). In response to a firing command (48, 310), the coupling apparatus introduces subsynchronous resonance mitigating currents into the transmission line (24, 204). Sensors (44, 222, 237) monitor power line parameters and/or the generator speed, and in response thereto, a higher-level controller (86, 220) generates a voltage command (85, 308). A vernier controller (50) responds to the monitored power line parameters and the voltage command (85, 308) to provide the firing command (48, 310) to the coupling apparatus.

摘要翻译： 一种用于抑制发电机（208,210）中的不期望的次同步共振振荡的次同步共振缓解系统（20,200,300,400），所述次同步共振缓解系统（20,200,300,400）包括方法和装置，所述次同步共振缓解系统如果未被检查则可能损坏涡轮机 - 发电机组。 诸如晶闸管控制串联电容器（TCSC）系统（30,34和35），源变换器装置（302）或静态移相器（420）的远程耦合装置耦合到发生器（208,210 ）通过传输线（24,204）传输。 响应于触发命令（48,310），耦合装置将次同步谐振减轻电流引入传输线（24,204）。 传感器（44,222,237）监测电力线参数和/或发电机速度，并且响应于此，较高级控制器（86,220）产生电压命令（85,308）。 游标控制器（50）响应所监视的电力线参数和电压命令（85,308）以向联接装置提供触发命令（48,310）。

公开(公告)号：EP0569557A4

公开(公告)日：1994-12-28

申请号：EP92913731

申请日：1992-06-15

申请人： ELECTRIC POWER RES INST

发明人： LARSEN EINAR V ,  MILLER NICHOLAS W

IPC分类号： G05F1/00 ,  G05F1/20 ,  G05F5/04 ,  H02J3/18 ,  H02P13/06

CPC分类号： G05F1/20 ,  H02J3/1814 ,  H02J3/1878 ,  H02P13/06 ,  Y02E40/10 ,  Y02E40/18 ,  Y02E40/30

摘要： A faster, more controllable phase-shifting transformer system (20, 120) is provided, along with a method of retrofitting and upgrading a preexisting system for faster operation, and a method of applying a desired phase shift to the voltage on a polyphase transmission line (22, 122). A phase-shifting transformer set has series and regulating transformers (30, 40) coupled together by a switching network (50). An optional modulator (60, 80, 90) modulates the phase shift voltage about a nominal level established by the switching network (50). A thyristor augmented switching network (250, 350, 450) may have a pair of thyristor valves (206, 208; 406, 408) augmenting a reversing switch (204; 404) or a thyristor (311) augmented load tap changer (310) for varying the phase shift discreet step magnitude. For continuous effective phase shift control, a thyristor valve (416, 416', 416'') and a harmonic filter (418, 418', 418'') are in parallel with each excited winding (446, 447, 448), and a harmonic filter (414) is in parallel with each regulating winding (444).