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公开(公告)号：US09871394B2
公开(公告)日：2018-01-16
申请号：US14876010
申请日：2015-10-06
发明人： Wei Ren , Einar Larsen
CPC分类号： H02J7/007 , H02J3/16 , H02J3/1821 , H02J7/0063 , Y02E40/12 , Y02E40/34
摘要： There are provided methods, devices, and systems relating to discharging thyristor-switched capacitors. For example, there is provided a method for discharging the capacitors of a thyristor-switched capacitor (TSC) device coupled to a transmission line. The method includes determining whether an angle of a voltage on the transmission line is within a threshold angle. Further, the method can include operating the device in a discharging mode when the angle is within the threshold angle and the threshold angle is in a predetermined set of threshold angles.
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公开(公告)号：US09853475B2
公开(公告)日：2017-12-26
申请号：US14876030
申请日：2015-10-06
发明人： Wei Ren , Einar Larsen
CPC分类号： H02J7/007 , H02J3/16 , H02J3/1821 , H02J7/0063 , Y02E40/12 , Y02E40/34
摘要： There are provided methods, devices, and systems relating to discharging thyristor-switched capacitors. For example, there is provided a method for discharging a first capacitor, a second capacitor, and a third capacitor. Each of the capacitors is coupled to respective phases of a transmission line. The first capacitor and the third capacitor are each coupled to their respective phase of the transmission line via a pair of anti-parallel thyristors, and the second capacitor is coupled directly to another phase of the transmission line with no thyristors therebetween. The method can include determining whether an angle of a voltage on the transmission line is within a threshold angle. Further, the method can include discharging the first, second, and third capacitors when the angle is within a threshold angle and the threshold angle is any value from a predetermined set of threshold angles.
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公开(公告)号：US20170346287A1
公开(公告)日：2017-11-30
申请号：US15600818
申请日：2017-05-22
申请人： LSIS CO., LTD.
发明人： Yong-Kil CHOI
CPC分类号： H02J3/1821 , H02J3/01 , H02J3/16 , H02J3/1864 , H02J3/26 , H03K17/72 , Y02E40/12
摘要： The present disclosure relates to a reactive power compensation system includes a first measurement unit, a second measurement unit, a reactive power compensation unit, and a controller. The first measurement unit measures impedance of each of at least one load. The second measurement unit measures a voltage and current provided to the at least one load. The reactive power compensation unit compensates the leading reactive power or the lagging reactive power. The controller monitors a change of the impedance in real time, checks a change of the voltage or current according to the change of the impedance, and controls the reactive power compensation unit according to a result of the check to compensate the leading reactive power or the lagging reactive power.if
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公开(公告)号：US20170141571A1
公开(公告)日：2017-05-18
申请号：US15218070
申请日：2016-07-24
申请人： University of Macau
发明人： Man-Chung WONG , Chi-Seng LAM , Yan-Zheng YANG , Wai-Hei CHOI , Ning-Yi DAI , Yajie WU , Chi-Kong WONG , Sai-Weng SIN , U-Fat CHIO , Seng-Pan U , Rui Paulo da Silva MARTINS
CPC分类号： H02J3/01 , G01R31/00 , H02J3/18 , H02J3/1842 , H02J3/1864 , Y02E40/12 , Y02E40/22
摘要： A mixed signal controller for a power quality compensator includes an analog circuit, an analog-to-digital converter (ADC), and a digital circuit. The analog circuit amplifies an input signal from the power quality compensator by a gain factor and outputs an analog signal, which is converted to a digital signal by the ADC. The digital circuit receives the digital signal, calculates the reference compensating current of each phase and then generates a trigger signal via hysteresis PWM to the power quality compensator. The digital circuit includes an evaluation circuit that calculates a value of the system total harmonic distortion after the power quality compensator compensates power and adjusts the gain factor when the value of the system total harmonic distortion reaches a predetermined threshold.
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公开(公告)号：US09472953B2
公开(公告)日：2016-10-18
申请号：US14589663
申请日：2015-01-05
申请人： Hamid Pishdadian
发明人： Hamid Pishdadian
IPC分类号： G05F1/70 , H02J3/18 , H03K17/725 , H03K17/79
CPC分类号： H02J3/1821 , G05F1/70 , H02J3/1864 , H03K17/725 , H03K17/79 , Y02E40/12 , Y10T307/625
摘要： A dynamic high-energy switch used for correcting load imbalance through connecting and disconnecting capacitance in a power feed circuit.
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6.发明申请SUBMODULE IDENTIFICATION IN A MODULAR MULTILEVEL CONVERTER BY MEANS OF MEASURING SIGNAL PROPAGATION TIMES FROM THE CENTRAL CONTROLLER 有权通过测量来自中央控制器的信号传播时间的模块化多模转换器中的子标识公开(公告)号：US20160241125A1
公开(公告)日：2016-08-18
申请号：US15025766
申请日：2014-09-29
IPC分类号： H02M1/08 , H04B10/079
CPC分类号： H02M1/08 , H02J3/1857 , H02M7/483 , H02M2001/0003 , H02M2007/4835 , H04B10/0793 , Y02E40/12 , Y02E40/16 , Y02E40/26
摘要： An electrical apparatus comprises a chain-link converter which includes a plurality of chain-link sub-modules each of which is operable to provide a voltage source. The electrical apparatus also includes a switching control unit to control the chain-link sub-modules. The switching control unit is operatively interconnected with each chain-link sub-module by an electromagnetic radiation conduit. The length of the electromagnetic radiation conduit between the switching control unit and at least one chain-link sub-module differs from the length of the electromagnetic radiation conduit between the switching control unit and at least one other chain-link sub-module. The switching control unit is configured to discern a difference in the time taken for an electromagnetic signal to propagate through each different-length electromagnetic radiation conduit to thereby identify the or each chain-link sub-module associated with each different-length electromagnetic radiation conduit.
摘要翻译： 电气设备包括链式转换器，其包括多个链节子模块，每个链接子模块可操作以提供电压源。 电气设备还包括控制链式子模块的切换控制单元。 切换控制单元通过电磁辐射导管与每个链节子模块可操作地互连。 开关控制单元和至少一个链节子模块之间的电磁辐射导管的长度与开关控制单元和至少一个其它链节子模块之间的电磁辐射导管的长度不同。 开关控制单元被配置为识别电磁信号通过每个不同长度的电磁辐射导管传播的时间差，从而识别与每个不同长度的电磁辐射导管相关联的或每个链节子模块。
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公开(公告)号：US09257844B2
公开(公告)日：2016-02-09
申请号：US13637094
申请日：2011-04-12
申请人： Antero Kähkönen
发明人： Antero Kähkönen
CPC分类号： H02J3/1864 , G05F1/70 , H02M7/003 , Y02E40/12
摘要： An arrangement and a method for reactive power compensation in connection with a power transmission line. The arrangement includes at least one transformer and at least one reactive power compensator connected to the low-voltage side of the transformer and at least one adapter reactor, the adapter reactor being connected in series with the transformer so that the reactive power compensator is connected to the power transmission line via the transformer and the adapter reactor.
摘要翻译： 一种与输电线相关的无功补偿装置和方法。 该装置包括至少一个变压器和连接到变压器的低压侧的至少一个无功功率补偿器和至少一个适配器电抗器，适配器电抗器与变压器串联连接，使得无功功率补偿器连接到 通过变压器和适配器反应器的输电线路。
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公开(公告)号：US09130458B2
公开(公告)日：2015-09-08
申请号：US13634205
申请日：2010-03-15
CPC分类号： H02M7/217 , H02J3/1835 , H02J3/1857 , H02M7/49 , H02M2007/4835 , Y02E40/12 , Y02E40/16 , Y02E40/26 , Y02E40/30
摘要： A static synchronous compensator for use in reactive power compensation, the static synchronous compensator comprising at least one primary compensator limb including first and second DC terminals, and an AC terminal for connection in use to an AC network, the or each primary compensator limb defining first and second limb portions, each limb portion—including at least one switching element connected in series with a chain-link converter—between a respective one of the first and second DC terminals and the AC terminal, the switching elements of the first and second limb portions being operable to switch the respective chain-link converters in and out of circuit between the respective DC terminal and the AC terminal and the chain-link converters being operable to generate a voltage waveform at the AC terminal; and a secondary compensator limb including at least one DC link capacitor connected between the first and second DC terminals, the secondary compensator limb being connected in parallel with the or each primary compensator limb.
摘要翻译： 一种用于无功补偿的静态同步补偿器，所述静态同步补偿器包括至少一个包括第一和第二DC端子的主补偿器支路和用于连接到AC网络的AC端子，所述或每个初级补偿器支路限定第一 和第二肢部，每个肢体部分 - 包括与第一和第二DC端子中的相应一个与AC端子之间的链节转换器串联连接的至少一个开关元件，第一和第二肢体的开关元件 部分可操作以在相应的直流端子和交流端子之间切换各个链节转换器进入和离开电路，链式转换器可操作以在AC端子处产生电压波形; 以及次级补偿器支路，其包括连接在所述第一和第二DC端子之间的至少一个DC链路电容器，所述辅助补偿器支路与所述或每个主要补偿器支路并联连接。
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9.发明申请公开(公告)号：US20130265014A1
公开(公告)日：2013-10-10
申请号：US13907303
申请日：2013-05-31
申请人： Bengt Franken
发明人： Bengt Franken
IPC分类号： G05F1/70
CPC分类号： G05F1/70 , H02J3/1821 , H02J3/1864 , H02J3/1878 , Y02E40/12 , Y02E40/30
摘要： A reactive power compensator. The reactive power compensator includes a power transformer having an AC bus side and a compensator bus side, wherein the power transformer is connectable to an AC grid at the AC bus side. The reactive power compensator further includes a thyristor-switched capacitor and a thyristor-controlled reactor connected to the compensator bus side. The reactive power compensator includes a booster transformer connected in series with the power transformer and to the compensator bus side. The invention also relates to computer programs and computer program products.
摘要翻译： 无功补偿器。 无功补偿器包括具有AC总线侧和补偿器总线侧的电力变压器，其中电力变压器可连接到AC总线侧的AC电网。 无功功率补偿器还包括晶闸管开关电容器和连接到补偿器总线侧的可控硅控制电抗器。 无功补偿器包括与电力变压器和补偿器总线侧串联连接的升压变压器。 本发明还涉及计算机程序和计算机程序产品。
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公开(公告)号：US08519679B2
公开(公告)日：2013-08-27
申请号：US13614707
申请日：2012-09-13
CPC分类号： H02J3/1864 , Y02E40/12
摘要： A one-phase static var compensator apparatus includes a compensator string consisting of a first static var compensator connected serially to a thyristor valve. The compensator string is arranged to be connected on its first end to one phase of a transmission grid of a rated voltage exceeding 69 kV. Moreover, the thyristor valve includes a plurality of thyristors connected serially and the compensator string is arranged to be directly connected to the transmission grid. A corresponding three phase apparatus is also presented.
摘要翻译： 单相静态无功补偿装置包括由串联连接到晶闸管阀的第一静态无功补偿器组成的补偿器串。 补偿器串被布置成在其第一端连接到额定电压超过69kV的输电网的一相。 此外，晶闸管阀包括串联连接的多个晶闸管，并且补偿器串被布置为直接连接到传输格栅。 还提出了相应的三相设备。
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