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81. 发明授权

US5093630A Overvoltage protection in series thyristor string for static var compensator 失效
标题翻译：用于静态电压补偿器的系列电机中的过电压保护
公开(公告)号：US5093630A
公开(公告)日：1992-03-03
申请号：US507491
申请日：1990-04-11
申请人： Naoko Sato
发明人： Naoko Sato
IPC分类号： G05F1/45 , G05F1/70 , H02J3/18 , H02M1/088 , H03K5/151 , H03K17/0812
CPC分类号： H03K17/08124 , G05F1/45 , H02J3/1864 , H02M1/088 , H03K5/151 , Y02E40/12
摘要： A gate pulse generator for a static var compensator (SVC) constituted by a thyristor switched capacitor (TSC) comprises voltage detectors for respectively detecting forward and reverse voltages applied to antiparallel-connected thyristors in the TSC. The antiparallel-connected thyristors comprise a plurality of series-connected forward thyristors and a plurality of series-connected reverse thyristors. The gate pulse generator monitors the forward and reverse voltages and determines whether a period in which both the forward and reverse voltages are zero continues for a predetermined period while reverse-phase sides of the antiparallel-connected thyristors are held in conduction periods, respectively. The gate pulse generator prolongs an active period of a forward conduction period signal by the predetermined period. Upon switching from in-phase conduction to reverse-phase conduction, even if some of the plurality of series-connected thyristors are turned off, these thyristors are turned on again within the predetermined period, and an overvoltage is not applied to these thyristors.

82. 发明授权

US4897593A Reactive power compensator for electric power system 失效
标题翻译：电力系统无功补偿器
公开(公告)号：US4897593A
公开(公告)日：1990-01-30
申请号：US293450
申请日：1989-01-04
申请人： Hiroo Konishi , Yasuo Matsuda
发明人： Hiroo Konishi , Yasuo Matsuda
IPC分类号： G05F1/70 , H02J3/18
CPC分类号： H02J3/1864 , Y02E40/12
摘要： A reactive power compensator for an electric power system includes a voltage control circuit which amplifies a differential voltage between the potential command value and a potential signal corresponding to the voltage of the electric power system detected by a potential detector. The voltage control circuit outputs a reactive power compensation control signal. The control signal is fed to a reactive power output circuit which controls the voltage of the power system in order to compensate for reactive power in the power system. A gain calculation circuit is provided for setting the gain of the voltage control circuit to a value proportional to the level of short-circuit capacity of the system power on the system power supply side of the reactive power output circuit.
摘要翻译：一种用于电力系统的无功补偿器包括电压控制电路，该电压控制电路放大电势指令值与对应于由电位检测器检测到的电力系统的电压的电位信号之间的差分电压。电压控制电路输出无功功率补偿控制信号。控制信号被馈送到无功功率输出电路，其控制电力系统的电压以补偿电力系统中的无功功率。提供增益计算电路，用于将电压控制电路的增益设定为与无功功率输出电路的系统电源侧的系统电源的短路容量的电平成正比的值。

83. 发明授权

US4891570A Static var compensator with thyristor control 失效
标题翻译：具有晶闸管控制的静态无功补偿器
公开(公告)号：US4891570A
公开(公告)日：1990-01-02
申请号：US127904
申请日：1987-12-02
申请人： Tomoharu Nakamura , Hiroyuki Irokawa , Syoichi Mashiko , Hidehiko Shimamura , Hirofumi Tsutsumi
发明人： Tomoharu Nakamura , Hiroyuki Irokawa , Syoichi Mashiko , Hidehiko Shimamura , Hirofumi Tsutsumi
IPC分类号： H02J3/18
CPC分类号： H02J3/1864 , Y02E40/12
摘要： A static var compensator which includes a transformer with one end connected to an electric power system and a series circuit constituted by a reactor and a thyristor bulb connected between the other end of the transformer and ground. A voltage detection device detects the voltage of the electric power system and the output of the voltage detection device is sample an even number of times for every cycle of the voltage. A register is provided for storing sampled values an adder is provided for adding absolute values of the sampled values stored in the register. A firing angle of the thyristor bulb is controlled by a control device in accordance with a deviation of an output of the adder from an output of a voltage setting device. A deviation deriving device obtains a deviation of an output of the control device from a predetermined value corresponding to a present var, and an output of the deviation deriving devices is fed back to an input side of the control device.
摘要翻译：一种静态无功补偿器，包括一端连接到电力系统的变压器和由电抗器和连接在变压器的另一端与地之间的晶闸管构成的串联电路。电压检测装置检测电力系统的电压，并且对于电压的每个周期，电压检测装置的输出采样偶数次。提供用于存储采样值的寄存器，用于添加存储在寄存器中的采样值的绝对值的加法器。晶闸管灯泡的点火角由控制装置根据加法器的输出与电压设定装置的输出的偏差来控制。偏差导出装置将控制装置的输出的偏差与对应于当前var的规定值取得，偏差导出装置的输出反馈到控制装置的输入侧。

84. 发明授权

US4859884A Gate signal generator for thyristor valve 失效
标题翻译：门控信号发生器用于晶闸管阀门
公开(公告)号：US4859884A
公开(公告)日：1989-08-22
申请号：US216538
申请日：1988-07-08
申请人： Teruo Yoshino
发明人： Teruo Yoshino
IPC分类号： C08G79/02 , H02H7/12 , H02J3/18 , H02M1/08 , H02M1/088 , H02M1/092 , H03K17/0812 , H03K17/292
CPC分类号： H02M1/092 , H02H7/1206 , H02J3/1864 , H03K17/08124 , Y02E40/12
摘要： A gate signal generator comprises U- and X-phase set circuits for discriminating, after the conduction period of every cycle, whether OFF time intervals of U- and X-phase thyristors are greater or smaller than a predetermined value, a reset circuit for detecting that both the U- and X-phase circuits do not provide outputs, a flip-flop set in response to an output from the U- or X-phase set circuit and reset in response to an output from the reset circuit, AND gates for calculating AND products of an output from the flip-flop and U- and X-phase forward voltage signals and for outputting the signals at a start of the forward voltage application after setting the flip-flop, and OR gates for calculating OR sums of outputs from the AND gates and outputs from the normal gate circuits. Gate signals are applied to the thyristors in response to the outputs from the OR gates.
摘要翻译：一个门信号发生器包括U相和X相设置电路（6U，6X SIM 8U，8X），用于在每个周期的导通周期之后，判断U相和X相晶闸管的关闭时间间隔（TN）（3U ，3X）大于或小于预定值;用于检测U相和X相电路（6-8）都不提供输出的复位电路（9），响应中设置的触发器（10）耦合到来自U相或X相设置电路（6-8）的输出（FFS）并且响应于来自复位电路（9）的输出（FFR）复位，用于计算AND产物的与门（70V，70X）来自触发器（10）的输出（FF）和U相和X相正向电压信号（FVU，FVX），并在用于在正向电压施加开始时输出信号（F70U，F70X）触发器（10）和用于从与门（70U，70X）输出的输出（F70U，F70X）的OR和和来自普通门电路（5U，5X）的输出（GP5U，GP5X）的OR门（80U，80X））。响应于来自OR门（80U，80X）的输出（GPU，GPX），门控信号（GPU，GPX）被施加到晶闸管（3U，3X）。

85. 发明授权

US4811236A Transmission line voltage detector for static VAR generator 失效
标题翻译：用于静态VAR发生器的传输线电压检测器
公开(公告)号：US4811236A
公开(公告)日：1989-03-07
申请号：US926303
申请日：1986-11-03
申请人： Michael B. Brennen , Alberto Abbondanti
发明人： Michael B. Brennen , Alberto Abbondanti
IPC分类号： H02J3/18
CPC分类号： H02J3/1864 , Y02E40/12
摘要： In order to maintain low telephone interference (IT factor) during its normal operation and to establish rapid-post-fault voltage support to preserve the integrity of electric power transmission lines in the presence of degraded system impedance and harmonic instability, amplitude detection in a transmission voltage regulator (static VAR generator, SVG) is provided based on real time conventional, or fast, Fourier analysis, data samples being used to establish the fundamental voltage amplitude and collected during a specific, frequency tracking sliding window that precedes the amplitude reading by one line voltage cycle of the transmission line. The number of samples in the window is an integer multiple of the line frequency and, in the case of conventional analysis, the pulse number of the switching power circuit is used in the SVG. The amplitude value is updated after each sampling by shifting (sliding) the one cycle sample data base in a first in - first out manner.
摘要翻译：为了在其正常运行期间保持低电话干扰（IT因素），并且在存在降低的系统阻抗和谐波不稳定性的情况下建立快速故障后电压支持以保持电力传输线的完整性，传输中的幅度检测提供基于实时常规或快速傅立叶分析的电压调节器（静态VAR发生器，SVG），数据样本用于建立基波电压幅度，并在振幅读数之前的特定频率跟踪滑动窗口期间收集传输线的线路电压周期。窗口中的样本数是线路频率的整数倍，在传统分析的情况下，SVG中使用开关电源电路的脉冲数。通过以先进先出的方式移动（滑动）一个循环采样数据库，在每次采样之后更新振幅值。

86. 发明授权

US4797587A Triggering method for a thyristor switch 失效
标题翻译：晶闸管开关触发方式
公开(公告)号：US4797587A
公开(公告)日：1989-01-10
申请号：US31862
申请日：1987-03-30
申请人： Christoph Tschudi , Fritz Wittwer
发明人： Christoph Tschudi , Fritz Wittwer
IPC分类号： H02M1/08 , H02J3/18 , H02M1/088 , H02M1/092 , H03K17/725 , H03K17/72
CPC分类号： H02M1/092 , H02J3/1864 , Y02E40/12
摘要： A triggering method for a thyristor switch which has at least two thyristors wired in series and a thyristor wired in antiparallel to each of these thyristors. The thyristor switch is triggered or cut off as a function of a specifiable on-off signal. At least a single triggering of a thyristor to be switched-on takes place at the earliest if a positive anode-cathode voltage is applied to it which exceeds a specifiable switch-on voltage limiting value. The method comprises generating a trigger standby signal if the on-off signal is in the switch-on condition and, with a specifiable minimum number of thyristors to be triggered wired in series, their anode-cathode voltage is greater than the specifiable switch-on voltage limiting value. At least a single triggering of each thyristor to be switched on takes place by means of a short-duration trigger pulse only during the duration of the trigger standby signal.
摘要翻译：一种晶闸管开关的触发方法，其具有串联的至少两个晶闸管和与这些晶闸管中的每一个反向并联的晶闸管。晶闸管开关作为可指定开关信号的功能被触发或切断。如果向其施加超过可指定的接通电压限制值的正极 - 阴极电压，则最早发生可接通的晶闸管的单次触发。该方法包括：如果开 - 关信号处于接通状态，则产生触发待机信号，并且要指定的最小数量的晶闸管被串联触发，它们的阳极 - 阴极电压大于可指定开关电压限制值。只有在触发待机信号的持续时间期间，通过短时间触发脉冲才能进行每个晶闸管的接通的至少一次触发。

87. 发明授权

US4546303A Static reactive-power compensation apparatus 失效
标题翻译：静态无功补偿装置
公开(公告)号：US4546303A
公开(公告)日：1985-10-08
申请号：US594662
申请日：1984-03-29
申请人： Takafumi Maeda , Setsurou Mine
发明人： Takafumi Maeda , Setsurou Mine
IPC分类号： G05F1/70 , H02J3/18
CPC分类号： H02J3/1864 , Y02E40/12
摘要： A static reactive-power compensating apparatus in which transients having a frequency below a predetermined frequency are not compensated for while all other variations are fully compensated for. A reset filter circuit is connected between the output of a rectifier circuit and a thyristor control circuit, the latter controlling the firing of thyristors which couple a reactive energy storage bank to the power system for compensating for voltage variations in the system. Preferably, the reset filter has a transfer characteristic of sT.sub.1 /(1+sT.sub.1).
摘要翻译：一种静态无功功率补偿装置，其中具有低于预定频率的频率的瞬变不被补偿，而所有其它变化被完全补偿。复位滤波电路连接在整流电路的输出端和晶闸管控制电路之间，晶闸管控制电路控制晶闸管的点火，将可变电容器组耦合到电力系统，以补偿系统中的电压变化。优选地，复位滤波器具有sT1 /（1 + sT1）的传输特性。

88. 发明授权

US4540895A Device having thyristors connected in series 失效
标题翻译：具有串联连接晶闸管的装置
公开(公告)号：US4540895A
公开(公告)日：1985-09-10
申请号：US492490
申请日：1983-05-06
申请人： Masatoshi Takeda
发明人： Masatoshi Takeda
IPC分类号： G05F1/44 , G05F1/70 , H02J3/18 , H02M1/08 , H03K17/082 , H03K17/10 , H03K17/72
CPC分类号： H02M1/08 , G05F1/44 , H02J3/1864 , H03K17/0824 , H03K17/105 , Y02E40/12
摘要： A device comprising a series circuit consisting of a plurality of thyristors connected in series, and a reverse-blocking semiconductor element such as a diode connected in an antiparallel relationship to the series circuit. The device further includes means for detecting whether a sufficient turn-off time is secured for each of the thyristors anterior or posterior to a reference moment at the zero point of a current flowing in the diode, and means for turning on the entirety of the thyristors when the sufficient turn-off time is not secured. Since none of the thyristors is turned off in the state where the turn-off time is insufficient, it becomes possible with certainty to achieve exact prevention of a fault that one or more thyristors, turned off earlier than others are led to breakdown by an overvoltage.
摘要翻译：包括由串联连接的多个晶闸管组成的串联电路的装置以及与串联电路以反并联方式连接的反向阻挡半导体元件，例如二极管。该装置还包括用于检测在二极管中流动的电流的零点处的参考时刻前后的每个晶闸管是否确保足够的关断时间的装置，以及用于接通整个晶闸管的装置当没有确保足够的关闭时间时。由于在关断时间不足的状态下，没有一个晶闸管关断，所以有可能确实地实现一个故障的确切预防，即一个或多个晶闸管早于其他晶闸管导致过压击穿。

89. 发明授权

US4470005A Static VAR generator having a thyristor circuit arrangement providing reduced losses 失效
标题翻译：具有提供降低损耗的晶闸管电路装置的静态VAR发生器
公开(公告)号：US4470005A
公开(公告)日：1984-09-04
申请号：US438431
申请日：1982-11-02
申请人： Laszlo Gyugyi
发明人： Laszlo Gyugyi
IPC分类号： H02H9/04 , G05F1/70 , H02J3/18
CPC分类号： H02J3/1864 , Y02E40/12
摘要： An auxiliary thyristor control circuit inserts a zinc oxide varistor in series with the capacitor bank of a static VAR generator for discharging the capacitor bank when the static VAR generator is subjected to high transient voltages.
摘要翻译：辅助晶闸管控制电路与静电VAR发生器的电容器组串联插入氧化锌压敏电阻器，用于在静态VAR发生器经受高瞬态电压时对电容器组放电。

90. 发明授权

US4398141A Static VAR generators 失效
标题翻译：静态VAR发电机
公开(公告)号：US4398141A
公开(公告)日：1983-08-09
申请号：US303299
申请日：1981-09-15
申请人： Michael B. Brennen , Laszlo Gyugyi , Eric J. Stacey
发明人： Michael B. Brennen , Laszlo Gyugyi , Eric J. Stacey
IPC分类号： H02H7/00 , H02J3/18
CPC分类号： H02J3/1864 , Y02E40/12
摘要： There is provided by this invention a static VAR generator having an auxiliary shutdown firing pulse generator that initiates a thyristor controlled inductive current to cancel only capacitive current supplied by the static VAR generator in the event of failure of the VAR generator's control means monitoring the capacitive current requirements.
摘要翻译：本发明提供一种具有辅助关断点火脉冲发生器的静态VAR发生器，其启动晶闸管控制的感应电流，以在VAR发生器的控制装置监测电容电流的故障的情况下仅抵消由静态VAR发生器提供的电容电流要求。

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