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公开(公告)号：US07692415B2
公开(公告)日：2010-04-06
申请号：US11797077
申请日：2007-04-30
IPC分类号： G05F1/70
CPC分类号： G05F1/70 , H02J3/1864 , Y02E40/12
摘要： A reactive power control apparatus for an AC power system includes a reactive power compensation device, a compensation capacitor device and a compensation capacitor control device. The compensation capacitor control device includes a detection voltage output circuit which outputs a bus detection voltage after the clearing of a voltage drop abnormality, corresponding to the AC voltage of a system bus after the voltage drop abnormality that occurred in the AC power system has been cleared, and a compensation capacitor control circuit which controls the connection status of a compensation capacitor with respect to the system bus. The compensation capacitor control circuit controls the connection status of the compensation capacitor with respect to the system bus, on the basis of the voltage level of the bus detection voltage after the clearing of the voltage drop abnormality.
摘要翻译： 一种用于交流电力系统的无功功率控制装置，包括无功补偿装置，补偿电容器装置和补偿电容器控制装置。 补偿电容器控制装置包括检测电压输出电路，其在清除电压降异常之后输出对应于在AC电力系统中发生的电压降异常之后的系统总线的AC电压已经被清除的总线检测电压 以及补偿电容器控制电路，其控制补偿电容器相对于系统总线的连接状态。 补偿电容器控制电路根据总线检测电压在清除电压降异常之后的电压电平来控制补偿电容器相对于系统总线的连接状态。
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公开(公告)号：US07755333B2
公开(公告)日：2010-07-13
申请号：US12149655
申请日：2008-05-06
CPC分类号： H02J3/1821 , G05F1/70 , H02J3/1864 , Y02E40/12
摘要： A SVC control section detects a bus voltage from an instrument transformer, and adjusts reactive power generated by a SVC according to the detected bus voltage. A cooperative control section generates a control command for controlling the interconnection and parallel-off of a phase lead capacitor and a phase lag reactor on the basis of the amount of reactive power generated by the SVC and the bus voltage detected by the instrument transformer and a voltage sensor. A voltage comparator compares the bus voltage with a predetermined threshold voltage set to a voltage lower than a lower limit value of a steady state fluctuation range of the bus voltage and outputs the comparison result to a circuit breaker control section. When the bus voltage is lower than the threshold voltage, the circuit breaker control section locks the control command from the cooperative control section.
摘要翻译： SVC控制部分检测仪表变压器的总线电压，根据检测到的总线电压调整SVC产生的无功功率。 合作控制部分根据由SVC产生的无功功率和由仪表变压器检测到的总线电压产生用于控制相位超前电容器和相位滞后电抗器的互连和并联的控制命令， 电压传感器 电压比较器将总线电压与设定为低于总线电压的稳态波动范围的下限值的电压设定的预定阈值电压进行比较，并将比较结果输出到断路器控制部。 当总线电压低于阈值电压时，断路器控制部分锁定来自协同控制部分的控制命令。
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公开(公告)号：US20080150496A1
公开(公告)日：2008-06-26
申请号：US11797077
申请日：2007-04-30
IPC分类号： G05F1/70
CPC分类号： G05F1/70 , H02J3/1864 , Y02E40/12
摘要： A reactive power control apparatus for an AC power system includes a reactive power compensation device, a compensation capacitor device and a compensation capacitor control device. The compensation capacitor control device includes a detection voltage output circuit which outputs a bus detection voltage after the clearing of a voltage drop abnormality, corresponding to the AC voltage of a system bus after the voltage drop abnormality that occurred in the AC power system has been cleared, and a compensation capacitor control circuit which controls the connection status of a compensation capacitor with respect to the system bus. The compensation capacitor control circuit controls the connection status of the compensation capacitor with respect to the system bus, on the basis of the voltage level of the bus detection voltage after the clearing of the voltage drop abnormality.
摘要翻译： 一种用于交流电力系统的无功功率控制装置，包括无功补偿装置，补偿电容器装置和补偿电容器控制装置。 补偿电容器控制装置包括检测电压输出电路，其在清除电压降异常之后输出对应于在AC电力系统中发生的电压降异常之后的系统总线的AC电压已经被清除的总线检测电压 以及补偿电容器控制电路，其控制补偿电容器相对于系统总线的连接状态。 补偿电容器控制电路根据总线检测电压在清除电压降异常之后的电压电平来控制补偿电容器相对于系统总线的连接状态。
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公开(公告)号：US20090128100A1
公开(公告)日：2009-05-21
申请号：US12149655
申请日：2008-05-06
CPC分类号： H02J3/1821 , G05F1/70 , H02J3/1864 , Y02E40/12
摘要： A SVC control section detects a bus voltage from an instrument transformer, and adjusts reactive power generated by a SVC according to the detected bus voltage. A cooperative control section generates a control command for controlling the interconnection and parallel-off of a phase lead capacitor and a phase lag reactor on the basis of the amount of reactive power generated by the SVC and the bus voltage detected by the instrument transformer and a voltage sensor. A voltage comparator compares the bus voltage with a predetermined threshold voltage set to a voltage lower than a lower limit value of a steady state fluctuation range of the bus voltage and outputs the comparison result to a circuit breaker control section. When the bus voltage is lower than the threshold voltage, the circuit breaker control section locks the control command from the cooperative control section.
摘要翻译： SVC控制部分检测仪表变压器的总线电压，根据检测到的总线电压调整SVC产生的无功功率。 合作控制部分根据由SVC产生的无功功率和由仪表变压器检测到的总线电压产生用于控制相位超前电容器和相位滞后电抗器的互连和并联的控制指令，以及 电压传感器 电压比较器将总线电压与设定为低于总线电压的稳态波动范围的下限值的电压设定的预定阈值电压进行比较，并将比较结果输出到断路器控制部。 当总线电压低于阈值电压时，断路器控制部分锁定来自协同控制部分的控制命令。
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公开(公告)号：US08648576B2
公开(公告)日：2014-02-11
申请号：US13167926
申请日：2011-06-24
IPC分类号： G05F1/70
CPC分类号： H02J3/1828 , H02J3/1878 , Y02E40/12 , Y10T307/669
摘要： A first SVC is connected to a first bus. A first SVC control unit controls the first SVC. A first fluctuation-component-voltage generating unit includes a voltage reference circuit that outputs a voltage reference value. A second SVC is connected to a second bus. A second SVC control unit controls the second SVC. A second fluctuation-component-voltage generating unit includes a first-order-lag control block with limiter that generates a comparative voltage that follows a bus voltage of the second bus with a predetermined time lag characteristic and is limited within a predetermined range. An impedance value XS1 of slope reactance of the first SVC is set smaller than impedance value XS2 of slope reactance of the second SVC.
摘要翻译： 第一个SVC连接到第一个总线。 第一SVC控制单元控制第一SVC。 第一波动分量电压产生单元包括输出电压基准值的电压基准电路。 第二SVC连接到第二总线。 第二SVC控制单元控制第二SVC。 第二波动分量电压产生单元包括具有限制器的一阶滞后控制块，其产生具有预定时间滞后特性并遵循第二总线的总线电压的比较电压并被限制在预定范围内。 将第一SVC的斜率电抗的阻抗值XS1设定为小于第二SVC的斜率电抗的阻抗值XS2。
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公开(公告)号：US20130002091A1
公开(公告)日：2013-01-03
申请号：US13634854
申请日：2011-03-30
申请人： Yoonho Kim , Takeshi Serizawa , Hiroshi Tanaka , Tadachika Nakayama , Masatoshi Takeda , Noboru Yamada , Koichi Niihara
发明人： Yoonho Kim , Takeshi Serizawa , Hiroshi Tanaka , Tadachika Nakayama , Masatoshi Takeda , Noboru Yamada , Koichi Niihara
摘要： A power-generating system includes a heat source having a temperature that goes up and down over time; a first device that undergoes electric polarization due to a temperature change of the heat source; and a second device that takes out an electric power from the first device.
摘要翻译： 发电系统包括具有随时间上升和下降的温度的热源; 由于热源的温度变化而发生电极化的第一装置; 以及从第一装置取出电力的第二装置。
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公开(公告)号：US20070279016A1
公开(公告)日：2007-12-06
申请号：US11802531
申请日：2007-05-23
申请人： Naohiro Toki , Masatoshi Takeda , Yoshiyuki Kono , Koji Temma
发明人： Naohiro Toki , Masatoshi Takeda , Yoshiyuki Kono , Koji Temma
IPC分类号： G05F1/70
CPC分类号： G05F1/70 , H02J3/1835 , Y02E40/12 , Y02E40/30
摘要： In a system stabilizing control system of controlling reactive power by a reactive power compensating device according to a voltage variation of an electric power system in which a capacitor is connected to a bus through a breaker, when the bus voltage drops, the capacitor is closed through the breaker to suppress a leading compensation reactive power amount caused by the reactive power compensating device, and when the bus voltage rises, the capacitor is disconnected through the breaker to suppress a lagging compensation reactive power amount caused by the reactive power compensating device.
摘要翻译： 在根据电力系统的电压变化通过无功功率补偿装置控制无功功率的系统稳定控制系统中，其中电容器通过断路器连接到总线，当总线电压下降时，电容器通过 所述断路器抑制由所述无功补偿装置引起的前导补偿无功功率量，并且当所述总线电压上升时，所述电容器通过所述断路器断开，以抑制由所述无功补偿装置引起的滞后补偿无功功率量。
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公开(公告)号：US4812669A
公开(公告)日：1989-03-14
申请号：US66203
申请日：1987-06-25
申请人： Masatoshi Takeda , Kazuo Ikeda , Yoshiharu Tominaga , Kenji Mori
发明人： Masatoshi Takeda , Kazuo Ikeda , Yoshiharu Tominaga , Kenji Mori
CPC分类号： H02J3/01 , H02M1/084 , Y02E40/40 , Y10T307/25
摘要： A harmonic suppressing device provided in a power system such as, for example, a transmission and distribution system or a power generating system, to filter higher harmonic currents generated by a higher harmonic current source of the power system such as, for example, a cycloconverter. The harmonic suppressing device comprises, as the principal components thereof, a passive filter serving as a high-order higher harmonic filtering unit for filtering higher harmonic currents of comparatively high order among those generated by the higher harmonic current source, and an active filter serving as low-order higher harmonic filtering unit for filtering higher harmonic currents of comparatively low orders among those generated by the higher harmonic current source. The active filter comprises: a main active filtering circuit comprising a plurality of switching transistors, rectifying diodes combined with the switching transistors, respectively, a capacitor, and a reactor; an operating circuit which calculates controlling data for controlling the commutating action of the main active filtering circuit on the basis of the detected values of the higher harmonic currents that flows into the power source side of the power system and the detected values of the output voltage of the higher harmonic current source; and a control circuit which gives control signals such as, for example, pulse width modulating signals to the main active filtering circuit. The harmonic suppressing device is capable of filtering higher harmonic currents in a wide frequency band.
摘要翻译： 一种谐波抑制装置，其设置在例如输配电系统或发电系统的电力系统中，以过滤由电力系统的高次谐波电流源产生的高次谐波电流，例如循环换流器 。 谐波抑制装置作为其主要部件包括用作高次谐波滤波单元的无源滤波器，用于对由高次谐波电流源产生的高次谐波电流进行滤波，并且将有源滤波器用作 低次谐波滤波单元，用于过滤由高次谐波电流源产生的较低阶的较高次谐波电流。 有源滤波器包括：主有源滤波电路，包括多个开关晶体管，分别与开关晶体管组合的整流二极管，电容器和反应器; 运算电路，其基于流入电力系统的电源侧的高次谐波电流的检测值和电力系统的输出电压的检测值，计算用于控制主有源滤波电路的换向动作的控制数据 高次谐波电流源; 以及控制电路，其向主要有源滤波电路提供诸如脉冲宽度调制信号的控制信号。 谐波抑制装置能够在宽频带中滤除高次谐波电流。
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公开(公告)号：US20140009127A1
公开(公告)日：2014-01-09
申请号：US13706446
申请日：2012-12-06
申请人： Osamu Mori , Masatoshi Takeda , Shinichi Ogusa
发明人： Osamu Mori , Masatoshi Takeda , Shinichi Ogusa
IPC分类号： G05F1/70
CPC分类号： G05F1/70 , H02M1/4208 , Y02E40/30
摘要： Three-phase TSCs are delta-connected to three-phase AC buses. Each TSC includes a reactor, a capacitor, and a thyristor switch that are electrically connected in series. The thyristor switches of the three phases are arranged so that the terminal-to-terminal distance between respective thyristor switches of respective phases are not uniform. The three-phase TSCs are configured so that the TSCs of two of the three phases having a shortest terminal-to-terminal distance therebetween are opposite to each other in terms of connection order in which the thyristor switch and the capacitor are electrically connected along a loop path made up of the delta-connected TSCs.
摘要翻译： 三相TSC与三相交流母线三角形连接。 每个TSC包括串联电连接的电抗器，电容器和晶闸管开关。 三相的晶闸管开关被布置成使得各相的各个可控硅开关之间的端子间距离不均匀。 三相TSC被配置为使得具有最短的端子间距离的三相中的两相的TSC在晶闸管开关和电容器沿着一个电连接的连接顺序方面彼此相反 环路由三角形连接的TSC组成。
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公开(公告)号：US08339111B2
公开(公告)日：2012-12-25
申请号：US12724610
申请日：2010-03-16
申请人： Masatoshi Takeda , Shinichi Ogusa
发明人： Masatoshi Takeda , Shinichi Ogusa
IPC分类号： G05F1/70
CPC分类号： G05F1/70 , H02J3/1828 , Y02E40/30
摘要： A capacitor bank unit includes three capacitor banks that have respective capacitances that are multiples of a basic capacitance in accordance with a number sequence of the n-th power of 2. One of the capacitor banks has the basic capacitance, remaining two of the capacitor banks includes two subbanks each. The capacitance of a subbank is set to a capacitance that is a multiple of the basic capacitance in accordance with a number sequence of the m-th power of 2. When any one of the capacitor banks fails, each of capacitor banks following the failed capacitor bank substitutes for a capacitor bank located immediately before itself.
摘要翻译： 电容器组单元包括三个电容器组，其具有根据2的n次方的数量级的基本电容的倍数的相应电容。电容器组之一具有基本电容，剩余两个电容器组 包括两个子银行。 子库的电容被设定为基于第二次幂的次数的基本电容的倍数的电容。当任何一个电容器组发生故障时，每个电容器组跟随故障电容器 银行替代位于自身之前的电容器组。
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