Method and device for control of a series-compensated converter station
    1.
    发明授权
    Method and device for control of a series-compensated converter station 失效
    用于控制串联补偿转换站的方法和装置

    公开(公告)号:US5657213A

    公开(公告)日:1997-08-12

    申请号:US538607

    申请日:1995-10-03

    摘要: Control equipment (CE2) generates an ordered value (AOL) of a control angle (.alpha.) in dependence on a limiting signal (AMAXL), capable of being influenced, for a converter included in a series-compensated converter station. A calculating value (AMARG) of a control angle is calculated continuously according to a predetermined relationship (M0, M1, M2, M3) which at least approximately resembles a relationship according to which, at a commutating margin (.gamma..sub.m) equal to a preselected value (.gamma..sub.p), said control angle is a function (F0) of a current (Id2) and a voltage (Un2) in the converter station and the limiting signal is formed in dependence on the calculating value.

    摘要翻译: 控制设备(CE2)根据包含在串联补偿转换器站中的转换器能够受影响的限制信号(AMAXL)产生控制角(α)的有序值(AOL)。 根据预定关系(M0,M1,M2,M3)连续地计算控制角的计算值(AMARG),该预定关系至少近似类似于在等于预选的换向余量(γm)的关系 值(gamma p),所述控制角度是转换站中的电流(Id2)和电压(Un2)的函数(F0),并且根据计算值形成限制信号。

    High-voltage direct current transmission installation having a high
voltage regulation capability
    2.
    发明授权
    High-voltage direct current transmission installation having a high voltage regulation capability 失效
    具有高电压调节能力的高压直流输电设备

    公开(公告)号:US5701239A

    公开(公告)日:1997-12-23

    申请号:US598389

    申请日:1996-02-08

    CPC分类号: H02J3/36 Y02E60/60

    摘要: An installation for transmission of electric power by means of high-voltage direct current has two converters (SRI, SRII), each of which is connected to an alternating-voltage network (NI, NII) and which are connected to each other through a dc connection (L). One converter (SRI) is controlled as a rectifier and another converter (SRII) is controlled as an inverter. One converter (SRI) is current-controlling and another converter (SRII) is voltage-controlling. The installation has means (VARC.sub.rect) adapted, at such a change of the control angle (.alpha..sub.rect) of the current-controlling converter (SRI) that the angle reaches a limit of a predetermined interval (.alpha..sub.max nom rect -.alpha..sub.min nom rect) to control, by means of the voltage-controlling converter (SRII), the direct voltage (Ud) of the transmission in such a way that said change is limited.

    摘要翻译: 通过高压直流电传输电力的设备有两个转换器(SRI,SRII),每个转换器连接到一个交流电压网络(NI,NII),并通过一个直流 连接(L)。 一个转换器(SRI)被控制为整流器,另一个转换器(SRII)被控制为逆变器。 一个转换器(SRI)是电流控制,另一个转换器(SRII)是电压控制的。 安装具有在电流控制转换器(SRI)的角度达到预定间隔的极限(αmax nom rect-αmin nom rect)的控制角(α1)的这种改变的情况下适用的装置(VARCrect) )通过电压控制转换器(SRII)来控制变速器的直流电压(Ud),使得所述变化受到限制。

    Method and device for control of a series-compensated converter station
    3.
    发明授权
    Method and device for control of a series-compensated converter station 失效
    用于控制串联补偿转换站的方法和装置

    公开(公告)号:US5694306A

    公开(公告)日:1997-12-02

    申请号:US538208

    申请日:1995-10-03

    摘要: Control equipment (CE1) generates an ordered value (AOL) of a control angle (.alpha.) in dependence on a limiting signal (AMINL, AMAXL), capable of being influenced, for a converter included in a series-compensated converter station. A calculating value (AFIRL) of a control angle is calculated continuously according to a predetermined relationship (H'1, H'2) which at least approximately imitates a relationship according to which, at a firing voltage (Ufir) for the valves of the converter equal to a preselected value (Uvref), said control angle is a function (G'0) of a current (Id1) and a voltage (Un1) in the converter station and the limiting signal is formed in dependence on the calculating value. (FIG. 5 )

    摘要翻译: 对于包括在串联补偿转换器站中的转换器,控制设备(CE1)根据能够受到影响的限制信号(AMINL,AMAXL)产生控制角(α)的有序值(AOL)。 根据预定关系(H'1,H'2)连续地计算控制角的计算值(AFIRL),该预定关系至少近似地模拟关系,根据该关系,在用于阀的阀的点火电压(Ufir) 转换器等于预选值(Uvref),所述控制角是转换站中电流(Id1)和电压(Un1)的函数(G'0),并且根据计算值形成限制信号。 (图5)

    Method and device for control of an installation for transmission of
high-voltage direct current
    4.
    发明授权
    Method and device for control of an installation for transmission of high-voltage direct current 失效
    用于控制高压直流传输装置的方法和装置

    公开(公告)号:US5621626A

    公开(公告)日:1997-04-15

    申请号:US538219

    申请日:1995-10-03

    IPC分类号: H02J5/00 H02J1/00 H02J3/36

    CPC分类号: H02J3/36 Y02E60/60

    摘要: An installation for transmission of high-voltage direct current comprises a first and a second converter (SR1, SR2, respectively), each one controlled by a separate piece of control equipment (CE1, CE2, respectively). Each one of the pieces of control equipment comprises a current controller (CC). The current controller of the second converter is supplied with a second current reference value (IOL2) and a current margin (IOM). The control equipment of the second converter comprises a function-forming member (11), which in dependence on an applied measured value (UD) of the direct voltage forms the current margin such that, when the direct voltage exceeds a first preselected voltage level (Udf), it assumes a first value (IOMf) and, when the direct voltage is lower than the first voltage level, it assumes a second value (IOMs), the magnitude of the second value being greater than the magnitude of the first value.

    摘要翻译: 用于传输高压直流电的装置包括第一和第二转换器(分别为SR1,SR2),每个转换器由分别的控制设备(分别为CE1,CE2)控制。 控制设备中的每一个包括电流控制器(CC)。 第二转换器的电流控制器被提供有第二电流参考值(IOL2)和电流裕量(IOM)。 第二转换器的控制设备包括功能形成构件(11),其根据所施加的直流电压的测量值(UD)形成电流裕度,使得当直流电压超过第一预选电压电平( Udf),它假设第一值(IOMf),并且当直流电压低于第一电压电平时,它采用第二值(IOM),第二值的幅度大于第一值的大小。

    Series-compensated converter station
    5.
    发明授权
    Series-compensated converter station 失效
    串联补偿转换站

    公开(公告)号:US5666277A

    公开(公告)日:1997-09-09

    申请号:US526652

    申请日:1995-09-11

    CPC分类号: H02J3/36 H02M7/7575 Y02E60/60

    摘要: A series-compensated converter station in an installation for transmission of high-voltage direct current is connected to an alternating-voltage network (N) with three phases (A, B, C, respectively). The converter station comprises at least two direct-voltage series-connected six-pulse converter bridges (SR1, SR2, respectively), a three-phase transformer coupling with two secondary windings (SW1, SW2, respectively), and a star-connected primary winding (PW) with a neutral point (NP) connected to ground as well as a series capacitor unit (CN) for each one of the three phases. Each one of the converter bridges is connected to a respective secondary winding and the primary winding is connected to the alternating-voltage network via the series-capacitor units. The transformer coupling exhibits a high impedance to zero-sequence currents through the primary winding of the transformer coupling.

    摘要翻译: 在用于传输高压直流电的设备中的串联补偿转换站连接到具有三相(A,B,C)的交流电压网络(N)。 转换器站包括至少两个直流电压串联连接的六个脉冲转换器桥(分别为SR1,SR2),三个二相绕组(分别为SW1,SW2)的三相变压器耦合器和星形连接的初级 绕组(PW),中性点(NP)连接到地,以及串联电容器单元(CN),用于三相中的每一个。 每个转换器桥连接到相应的次级绕组,并且初级绕组经由串联电容器单元连接到交流电压网络。 变压器耦合表现出通过变压器耦合的初级绕组的零序电流的高阻抗。

    Method and device for compensation of unbalance in a series compensated
converter station
    6.
    发明授权
    Method and device for compensation of unbalance in a series compensated converter station 失效
    串联补偿换流站不平衡补偿方法和装置

    公开(公告)号:US5627735A

    公开(公告)日:1997-05-06

    申请号:US558083

    申请日:1995-11-13

    IPC分类号: H02J3/18 H02J3/36 H02M7/757

    摘要: A series-compensated converter station included in an installation for transmission of high-voltage direct current comprises a converter (SR1, SR2) with at least one 6-pulse bridge (BR). Via series capacitors (SCR, SCS, SCT) the 6-pulse bridge is connected to a three-phase alternating-voltage network (N1, N2) with a fundamental frequency (f.sub.01, f.sub.02). Control equipment (CE1, CE2) generates an ordered value (AOL) of a control angle (.alpha.) for valves (V1-V6) included in the 6-pulse bridge in dependence on a limiting signal (AMAXL) capable of being influenced. An amplitude signal (AMPL) is formed which corresponds to the amplitude (C.sub.1) for a component (C.sub.1 cos(2.pi.f.sub.0 t+.phi..sub.1)) of the fundamental frequency in the direct voltage (Udb) of the 6-pulse bridge and a compensating signal (ACOMP) is continuously calculated in dependence on a sensed voltage (Un1, Un2) at the converter station and on the amplitude signal. The limiting signal is formed in dependence on the compensating signal for the purpose of maintaining the commutating margin (.gamma..sub.m) for the valves equal to at least the preselected value (.gamma..sub.p) in case of unbalance between the voltages (UCR, UCS, UCT) of the series capacitors. (FIG. 6)

    摘要翻译: 包括在用于传输高压直流电的设备中的串联补偿转换站包括具有至少一个6脉冲桥(BR)的转换器(SR1,SR2)。 通过串联电容器(SCR,SCS,SCT),6脉冲桥连接到基频(f01,f02)的三相交流电压网络(N1,N2)。 控制设备(CE1,CE2)根据能够受到影响的限制信号(AMAXL)产生包含在6脉冲桥中的阀门(V1-V6)的控制角(α)的有序值(AOL)。 形成对应于6脉冲桥的直流电压(Udb)中的基频的分量(C1cos(2πf0t+ phi1))的振幅(C1)的振幅信号(AMPL)和补偿信号 (ACOMP)根据转换器站处的感测电压(Un1,Un2)和幅度信号连续计算。 根据补偿信号形成限制信号,以便在电压(UCR,UCS,UCT)之间的不平衡的情况下将阀的换向裕度(γm)保持为至少预选值(γp) )串联电容器。 (图6)

    Method And Control Arrangement In A Power System
    7.
    发明申请
    Method And Control Arrangement In A Power System 有权
    电力系统中的方法和控制布置

    公开(公告)号:US20140055116A1

    公开(公告)日:2014-02-27

    申请号:US14066052

    申请日:2013-10-29

    IPC分类号: H02M5/29

    摘要: A method of controlling a magnitude of an electrical parameter in a power system via a high voltage electron tube. The method includes the steps of measuring the magnitude of the electrical parameter; generating a control signal based on the magnitude of the electrical parameter and on a reference magnitude of the electrical parameter; and switching the high voltage electron tube via the control signal such that the reference magnitude of the electrical parameter is essentially obtained. A control arrangement and a power system is also presented.

    摘要翻译: 一种通过高电压电子管控制电力系统中的电参数的大小的方法。 该方法包括测量电参数的大小的步骤; 基于所述电参数的大小和所述电参数的参考幅度产生控制信号; 并且经由控制信号切换高电压电子管,使得基本上获得电参数的参考幅度。 还提出了控制装置和电力系统。

    THYRISTOR CONTROLLED SERIES CAPACITOR MODULE
    8.
    发明申请
    THYRISTOR CONTROLLED SERIES CAPACITOR MODULE 有权
    电容器控制系列电容器模块

    公开(公告)号:US20090147411A1

    公开(公告)日:2009-06-11

    申请号:US12159766

    申请日:2005-12-28

    IPC分类号: H02H7/16

    摘要: A thyristor controlled series capacitor module including a capacitor connectable in series with a power line, a thyristor valve connected in parallel with the capacitor, a breaker connected in parallel with the thyristor valve, and an inductor. By providing a simplified breaker arrangement, the number of components is reduced.

    摘要翻译: 一种晶闸管控制的串联电容器模块,包括可与电源线串联的电容器,与电容器并联连接的晶闸管阀,与晶闸管阀并联连接的断路器和电感器。 通过提供简化的断路器布置,部件的数量减少。

    Method and apparatus for dynamically translating program instructions to microcode instructions
    9.
    发明授权
    Method and apparatus for dynamically translating program instructions to microcode instructions 有权
    用于将程序指令动态地转换为微代码指令的方法和装置

    公开(公告)号:US06611909B1

    公开(公告)日:2003-08-26

    申请号:US09201855

    申请日:1998-12-01

    IPC分类号: G06F922

    摘要: In a computer system the instruction decoding unit for translating program instructions to microcode instructions operates dynamically. Thus the unit receives state signals indicating the state of the computer, such as a trace enabling signal, influencing the translation process in the instruction decoding unit. These state signals are added to the operation code of the program instruction to be decoded, the operation code of the program instruction thus being extended and used as input to a translating table, the extended operation code of the program instruction being taken as an address of a field in the table. The addresses and thus the contents of the fields addressed for the same operation code of a program instruction can then be different for different values of the state signals. Thus generally, the state signals cause the instruction decoder to change its translating algorithm so that the decoder can decode an operation code differently depending on the state which the signals adopt. The dynamic decoding can for a trace enabling signal be used for switching on and off a trace function. In the normal case, when tracing is not desired, no microinstructions supporting the trace function have to executed and thereby the performance and in particular the speed of the computer system will be increased.

    摘要翻译: 在计算机系统中,用于将程序指令转换为微代码指令的指令解码单元动态地进行操作。 因此,单元接收指示计算机的状态的状态信号,例如跟踪使能信号,影响指令解码单元中的转换处理。 这些状态信号被添加到要解码的程序指令的操作代码中,因此程序指令的操作代码被扩展并用作转换表的输入,程序指令的扩展操作代码被视为 表中的一个字段。 因此,对于不同的状态信号值,对于程序指令的相同操作代码寻址的字段的地址和因此的内容可以是不同的。 因此,通常情况下,状态信号使指令译码器改变其翻译算法,使得解码器可根据信号采用的状态对不同的操作码进行解码。 动态解码可以用于跟踪启用信号用于打开和关闭跟踪功能。 在正常情况下,当不期望跟踪时,不需要执行支持跟踪功能的微指令,从而提高计算机系统的性能,特别是速度。

    Apparatus and method for controlling print density in a direct
electrostatic printing apparatus by adjusting toner flow with regard to
relative positioning of rows of apertures
    10.
    发明授权
    Apparatus and method for controlling print density in a direct electrostatic printing apparatus by adjusting toner flow with regard to relative positioning of rows of apertures 失效
    用于通过相对于孔排的相对定位调节调色剂流量来控制直接静电印刷设备中的印刷浓度的装置和方法

    公开(公告)号:US6082850A

    公开(公告)日:2000-07-04

    申请号:US44617

    申请日:1998-03-19

    申请人: Tomas Jonsson

    发明人: Tomas Jonsson

    摘要: A direct electrostatic printing device and method for printing an image to an information carrier with improved harmonization of the printed density from a plurality of rows of apertures. The harmonization of the printed density from apertures from different rows is accomplished by an improved method of controlling the amount of pigment particles transported through the apertures of each row. The method takes into account which row the aperture belongs to and how the rows are positioned in relationship to the pigment particle feed.

    摘要翻译: 一种用于将图像打印到信息载体上的直接静电印刷装置和方法,其具有来自多排孔的印刷密度的协调。 来自不同行的孔的印刷密度的协调是通过改进的方法来控制通过每行的孔传输的颜料颗粒的量来实现的。 该方法考虑了孔属于哪个行,以及这些行与颜料颗粒进料的关系如何。