公开(公告)号：US4264951A

公开(公告)日：1981-04-28

申请号：US47749

申请日：1979-06-12

Applicant: Hiroo Konishi ,  Hisao Amano

Inventor： Hiroo Konishi ,  Hisao Amano

IPC: H02J1/00 ,  G05F1/70 ,  H02J3/18 ,  H02J3/36

CPC classification number: H02J3/1878 ,  H02J3/36 ,  Y02E40/30 ,  Y02E60/60

Abstract: A pair of thyristor converters are connected by a DC power transmission line, and their AC terminals are connected through tapped transformers to AC systems respectively. The output signal of a constant-current circuit in a converter control unit associated with the forward converter is selected to control the gate of the forward converter, while the output signal of a constant-voltage circuit in a converter control unit associated with the reverse converter is selected to control the gate of the reverse converter. When the reactive power is to be controlled, a reactive power signal is applied for the gate control. A voltage limit indication circuit in each control unit receives the AC terminal voltage e.sub.2 of the transformer and the DC current I.sub.d so as to increase the control angle limit with a decrease in the values of e.sub.2 and I.sub.d. When the control advance angle or control delay angle determined by the output signals of the control circuits is larger than the control angle limit, this angle is limited to the control angle limit. When the reactive power is to be controlled, the tap position of either transformer is lowered to decrease e.sub.2 and to increase the control angle limit thereby widening the controllable range of the reactive power. During the start-stop stage or during the protective operation, the output of the voltage limit indication circuit in each control unit is inhibited to permit free variations of the control angle.

Abstract translation: 一对晶闸管转换器通过直流输电线连接，其交流端子分别通过抽头变压器连接到交流系统。 选择与正激变换器相关联的转换器控制单元中的恒流电路的输出信号来控制正激变换器的栅极，而与逆变器相关联的转换器控制单元中的恒压电路的输出信号 被选择来控制反向转换器的门。 当要控制无功功率时，对门控制施加无功功率信号。 每个控制单元中的电压限制指示电路接收变压器的交流端子电压e2和直流电流Id，以便随着e2和Id的值的减小而增加控制角限制。 当由控制电路的输出信号确定的控制提前角或控制延迟角大于控制角限制时，该角度被限制在控制角限制。 当要控制无功功率时，任一变压器的抽头位置降低以减小e2，并增加控制角限制，从而扩大无功功率的可控范围。 在起动停止阶段或保护动作期间，抑制各控制单元中的电压限制指示电路的输出，允许控制角度的自由变化。

公开(公告)号：US5349522A

公开(公告)日：1994-09-20

申请号：US897845

申请日：1992-06-12

Applicant: Hiroo Konishi ,  Hironari Kawazoe ,  Junzo Kawakami ,  Tomoharu Nakamura ,  Yukio Tokiwa ,  Tatsuhito Nakajima

Inventor： Hiroo Konishi ,  Hironari Kawazoe ,  Junzo Kawakami ,  Tomoharu Nakamura ,  Yukio Tokiwa ,  Tatsuhito Nakajima

IPC: G05F1/70 ,  H02J3/18 ,  H02M7/48 ,  H02M5/257

CPC classification number: H02J3/1842 ,  Y02E40/22

Abstract: An AC system having, for example, a voltage source, an inductance and a load has connected thereto an apparatus for controlling the phase and amplitude of the voltage of the system. The instantaneous current and voltage in the AC electrical system are measured and power measurements derived therefrom. The power measurements may be instantaneous real and imaginary power, instantaneous active and reactive power, or active and reactive power averaged over less than one cycle. The power measurements are then used to derive phase related control values, on the basis of which control signals are generated to a converter. The action of the converter in accordance with the control signals thus controls the amplitude and phase of the voltage. By use of power measurements, it is not necessary to measure the phase of the voltage of the AC system.

Abstract translation: 具有例如电压源，电感和负载的AC系统连接有用于控制系统的电压的相位和幅度的装置。 测量AC电气系统中的瞬时电流和电压，并从中得到功率测量值。 功率测量可以是在小于一个周期内平均的瞬时有功和虚功率，瞬时有功和无功功率或有功和无功功率。 然后，功率测量用于导出相位控制值，基于哪个控制信号被产生到转换器。 因此，根据控制信号的转换器的动作因此控制电压的幅度和相位。 通过使用功率测量，不需要测量交流系统电压的相位。

公开(公告)号：US4441032A

公开(公告)日：1984-04-03

申请号：US341575

申请日：1982-01-21

Applicant: Takeichi Sakurai ,  Kiyoshi Goto ,  Hiroo Konishi ,  Tadao Kawai

Inventor： Takeichi Sakurai ,  Kiyoshi Goto ,  Hiroo Konishi ,  Tadao Kawai

IPC: H02J1/00 ,  H02J3/36 ,  H02M7/493

CPC classification number: H02J3/36 ,  Y02E60/60 ,  Y10T307/707

Abstract: Two rectifiers and two inverters are operated under the state under which they are connected in parallel by common transmission lines. These rectifiers and inverters are controlled an independent control apparatus respectively which can selectively apply either the constant current control or the constant voltage control.The control apparatus of each converter has bestowed thereon the reference value of a current to flow through the particular converter and the reference value of a terminal voltage of the particular converter. A signal for lowering the current reference value is added to the control apparatus of one or all of the converters which are to be operated as the inverters. On the other hand, a signal for essentially rendering the terminal voltage of the converter smaller than the voltage reference value is added to the control apparatus of the converter which is to be operated as the converter for determining the voltage of a direct current system.

Abstract translation: 两个整流器和两个逆变器在通过公共传输线并联连接的状态下工作。 这些整流器和逆变器分别被控制为独立的控制装置，其可以选择性地应用恒定电流控制或恒定电压控制。 每个转换器的控制装置在其上赋予流过特定转换器的电流的参考值和特定转换器的端子电压的参考值。 用于降低电流参考值的信号被添加到要用作逆变器的一个或所有转换器的控制装置中。 另一方面，用于将转换器的端子电压基本上变成小于电压基准值的信号被添加到要用作用于确定直流系统的电压的转换器的转换器的控制装置中。

公开(公告)号：US4330815A

公开(公告)日：1982-05-18

申请号：US145741

申请日：1980-05-01

Applicant: Hiroo Konishi

Inventor： Hiroo Konishi

IPC: H02J1/00 ,  H02J3/36 ,  H02M7/757

CPC classification number: H02J3/36 ,  H02M7/7575 ,  Y02E60/60

Abstract: A DC power transmission control system for a DC line inserted between a pair of converters comprises a transformer provided on the AC side of each of the converters for maintaining constant the no-load voltage on the converter side by tap position control. One of the converters is operated as an inverter for control of the DC voltage. The control angle of the converter operated as the inverter is controlled by a signal associated with, e.g., a DC current as a load. The DC terminal voltages of the converters are made variable, thus reducing the amount of increase in the reactive power of the rectifier under a small load condition.

Abstract translation: 插入在一对转换器之间的直流线路的直流电力传输控制系统包括设置在每个转换器的交流侧的变压器，用于通过抽头位置控制来保持转换器侧的空载电压恒定。 其中一个转换器用作控制直流电压的逆变器。 作为逆变器工作的转换器的控制角度由与例如作为负载的DC电流相关联的信号控制。 变换器的直流端子电压是可变的，因此减小了在小负载条件下整流器的无功功率的增加量。

公开(公告)号：US5535113A

公开(公告)日：1996-07-09

申请号：US11352

申请日：1993-01-29

Applicant: Hiroo Konishi

Inventor： Hiroo Konishi

IPC: H02J1/00 ,  H02J3/36 ,  H02M5/45 ,  H02M7/12 ,  H02M7/155 ,  H02M7/48 ,  H02J3/38

CPC classification number: H02M1/4233 ,  H02J3/36 ,  Y02B70/126 ,  Y02E60/60

Abstract: A high voltage dc transmission system uses equipment of self-commutated converters each of which comprises switching devices with a self-commutating (gate-turn-off) function. A first control equipment associated with the rectifier comprises a constant reactive power (var) control circuit for holding constant the reactive power on the input side of the rectifier, and a constant dc voltage control circuit for holding constant the dc system voltage on the output side thereof. A second control equipment associated with the inverter comprises a constant reactive power control circuit for holding constant the reactive power on the output side of the inverter, and a constant active power control circuit for holding constant the active power on the output side thereof. The first control equipment and the second control equipment each have a current control circuit for making independent control of each component of a two-phase current resulted from transformation of a three-phase ac current.

Abstract translation: 高压直流传输系统使用自整流转换器的设备，每个转换器包括具有自换向（闸极关断）功能的开关器件。 与整流器相关联的第一控制设备包括用于保持整流器输入侧的无功功率的恒定无功功率（var）控制电路，以及用于保持输出侧的直流系统电压恒定的恒定直流电压控制电路 其中。 与逆变器相关联的第二控制设备包括：恒定无功功率控制电路，用于保持逆变器输出侧的无功功率;以及恒定有功功率控制电路，用于在其输出侧保持有功功率。 第一控制设备和第二控制设备各自具有电流控制电路，用于对由三相交流电流的变换产生的两相电流的每个分量进行独立控制。

公开(公告)号：US4897593A

公开(公告)日：1990-01-30

申请号：US293450

申请日：1989-01-04

Applicant: Hiroo Konishi ,  Yasuo Matsuda

Inventor： Hiroo Konishi ,  Yasuo Matsuda

IPC: G05F1/70 ,  H02J3/18

CPC classification number: H02J3/1864 ,  Y02E40/12

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US5710492A

公开(公告)日：1998-01-20

申请号：US575599

申请日：1995-12-20

Applicant: Hiroo Konishi ,  Masahiko Amano ,  Masahiro Watanabe ,  Masashi Nishimura

Inventor： Hiroo Konishi ,  Masahiko Amano ,  Masahiro Watanabe ,  Masashi Nishimura

IPC: H02J3/24 ,  H02P9/10 ,  H02P5/16 ,  G05F1/00

CPC classification number: H02P9/105 ,  H02J3/24

Abstract: In a power system wherein a plurality of power plants, load systems and power transmission components are connected to each other for increasing the power transmission capacity of the power system, the power system is stabilized and power swings are suppressed, by controlling a semiconductor switch used in a power system stabilizing apparatus which is provided at the power system in an applying manner adequately corresponding to its operation characteristics and function, in accordance with a stabilizing command signal generated by using state values (for example, voltage, current, power, frequency, phase angle) of the power system, detected by detecting circuits provided in the power system.

Abstract translation: 在其中多个发电厂，负载系统和电力传输部件彼此连接以增加电力系统的输电能力的电力系统中，通过控制所使用的半导体开关，电力系统被稳定并且功率摆动被抑制 在根据通过使用状态值（例如电压，电流，功率，频率等）产生的稳定指令信号的电力系统稳定装置中，其以适合于其操作特性和功能的应用方式设置在电力系统中， 相位角），由电力系统中提供的检测电路检测。

公开(公告)号：US5703791A

公开(公告)日：1997-12-30

申请号：US387097

申请日：1995-02-13

Applicant: Masahiko Amano ,  Masahiro Watanabe ,  Hiroo Konishi ,  Shinya Tanifuji ,  Tomoharu Nakamura

Inventor： Masahiko Amano ,  Masahiro Watanabe ,  Hiroo Konishi ,  Shinya Tanifuji ,  Tomoharu Nakamura

IPC: H02J3/24 ,  H02H7/06

CPC classification number: H02J3/24

Abstract: A system information input means takes in system information and a system state determining means determines states of the system. A component operation state determination means determines operation states of system stabilizing components. A control plan deciding means decides a control plan of the system in consideration of operation states of the system and the system stabilizing components. In deciding the control plan, a swing mode analyzing means firstly analyzes the swing mode at each place of the system on the basis of waveforms of time domain response simulations. Then, a control allotment setting means determines control allotment for each of the system stabilizing components based on the mode analysis and a control parameter setting means control sets the control parameters of each of the system stabilizing components. If plural control plans are obtained, the optimal one is selected based on eigenvalues of dynamics of the system or by evaluating time domain system responses by simulation method. The decided control plan is output to the system stabilizing components by a control plan output means.

Abstract translation: 系统信息输入装置接收系统信息，系统状态确定装置确定系统的状态。 分量运行状态确定装置确定系统稳定部件的运行状态。 控制方案决定装置考虑系统的运行状态和系统稳定部件来决定系统的控制计划。 在决定控制方案时，摆动模式分析装置首先根据时域响应模拟的波形分析系统各处的摆动模式。 然后，控制分配设定装置基于模式分析确定每个系统稳定部件的控制分配，并且控制参数设定装置控制设定每个系统稳定部件的控制参数。 如果获得多个控制计划，则基于系统动力学的特征值或通过模拟方法评估时域系统响应来选择最优的控制计划。 决定的控制计划由控制计划输出装置输出到系统稳定部件。

公开(公告)号：US5396411A

公开(公告)日：1995-03-07

申请号：US209017

申请日：1994-03-11

Applicant: Hiroo Konishi ,  Masahiko Amano ,  Masahiro Watanabe

Inventor： Hiroo Konishi ,  Masahiko Amano ,  Masahiro Watanabe

IPC: H02M7/155 ,  H02M7/12 ,  H02M7/19 ,  H02M7/757 ,  H02M5/45

CPC classification number: H02M7/7575 ,  Y02E60/60

Abstract: A power conversion system for converting between a.c. and d.c. power has a pair of line commutated converters connected in series, and each is connected to a corresponding transformer, one of which transformers is YY connected and the other of which is Y.DELTA. connected. A pair of minimum voltage detectors generate minimum voltage signals, a first one of the minimum voltage signals being YY related and a second one of the minimum voltage signals being Y.DELTA. related. The power conversion system has a control circuit which generate two phase control signals for controlling the pair of line commutated converters respectively. When a fault occurs in a.c. or d.c. apparatus connected to the power conversion system, the control circuit generates the phase control signals on the basis of the first and second minimum voltage signals respectively. In this way, each of the line commutated converters are controlled by an independent signal, so that the power conversion of each is optimized.

Abstract translation: 一种电源转换系统。 和d.c. 电源具有串联连接的一对线路换向转换器，并且各自连接到相应的变压器，其中一个变压器是YY连接的，另一个是Y DELTA连接的。 一对最小电压检测器产生最小电压信号，最小电压信号中的第一个是YY相关的，并且最小电压信号中的第二个是Y DELTA相关的。 电力转换系统具有一个控制电路，分别产生用于控制一对线路换向转换器的两个相位控制信号。 当发生故障时 或直流 连接到电力转换系统的装置，控制电路分别基于第一和第二最小电压信号产生相位控制信号。 以这种方式，每个线路整流转换器由独立的信号控制，使得每个转换器的功率转换被优化。

公开(公告)号：US4263517A

公开(公告)日：1981-04-21

申请号：US8482

申请日：1979-02-01

Applicant: Hiroo Konishi

Inventor： Hiroo Konishi

IPC: H02J1/00 ,  G05F1/56 ,  H02J3/36 ,  H02M7/757

CPC classification number: H02J3/36 ,  H02M7/7575 ,  Y02E60/60 ,  Y10T307/707 ,  Y10T307/724

Abstract: A HVDC system has two converter stations, each of which has two converters connected in cascade to operate as a rectifier or an inverter and the stations are connected through a d.c. power transmission line to each other and are connected to respective a.c. power sources through the a.c. power transmission lines. Each converter is controlled depending on the difference between a current reference for the HVDC system and an actual current flowing in the HVDC system when the converter operates as a rectifier, and controlled depending on the output of the constant margin angle control circuit when the converter operates as an inverter. When the converter operation condition is changed, i.e. another converter operates in addition to the converters in operation or the direction of power transmission in the HVDC system is changed, the current reference for the HVDC system is reduced depending on the d.c. voltage during a predetermined period.

Abstract translation: HVDC系统具有两个转换器站，每个变换站具有两个级联的变频器，用作整流器或逆变器，并且站通过直流连接。 电力传输线彼此连接并相互连接。 电源通过a.c. 输电线路。 当转换器作为整流器工作时，根据HVDC系统的电流基准和在HVDC系统中流动的实际电流之间的差异来控制每个转换器，并且当转换器操作时根据恒定余量角控制电路的输出来控制 作为逆变器。 当转换器工作条件改变时，即除了运行中的转换器之外，另一个转换器还工作，或者HVDC系统中的电力传输方向改变，HVDC系统的电流参考值根据直流电压减小。 电压。