公开(公告)号：WO1993001660A1

公开(公告)日：1993-01-21

申请号：PCT/US1992005716

申请日：1992-07-08

Applicant: ABB POWER T&D COMPANY INC.

Inventor： ABB POWER T&D COMPANY INC. ,  SHUEY, Kenneth, C.

IPC: H04B03/00

CPC classification number: H04J1/085 ,  H04B3/542 ,  H04B7/12 ,  H04B2203/5416 ,  H04B2203/5483 ,  H04B2203/5491 ,  H04L5/06 ,  H04L5/143

Abstract: A power distribution line communication system for, and method of, reducing effects of signal cancellation at locations along the distribution line (2) due to standing waves caused by reflections of a carrier signal impressed on the distribution line (2). A same outgoing data signal is modulated on each of a plurality of carrier signals (40, 42, 44) having different frequencies. The carrier signal frequencies are selected such that all of the carrier signals (40, 42, 44) will not experience signal cancellation at a same location on the distribution line (2). The modulated carrier signals (40, 42, 44) are simultaneously impressed on the distribution line (2) for transmission to remote locations (4), thereby ensuring reception of the outgoing data signal at each remote location (4).

公开(公告)号：WO1998027476A1

公开(公告)日：1998-06-25

申请号：PCT/US1997022963

申请日：1997-12-15

Applicant: ABB POWER T & D COMPANY INC.

Inventor： ABB POWER T & D COMPANY INC. ,  OTHMAN, Hisham ,  VEDAM, Rajkumar

IPC: G05F01/70

CPC classification number: H02J3/1842 ,  Y02E40/22

Abstract: Voltage flicker is a power quality problem in power distribution circuits (10) which is caused by the operation of fluctuating loads (18) such as AC and DC electric arc furnaces, spot welders, starting of large ac motors, and the like. Converters (12) based on Voltage Source technology (VSC) connected in shunt close to the fluctuating load are found to have the capability of reducing the voltage flicker level. Flicker control systems (20) responsive to the active and reactive power components are used to exploit the capabilities of VSC in accordance with the invention. The flicker control systems (20) reduce the voltage flicker observed at the point of common coupling by adapting, e.g., H-infinity, Linear Quadratic Gaussian, Mininum Variance Control, and self-tuning design methods for flicker control in power systems (10) having fixed or self-tuning flicker controller parameters.

Abstract translation: 电压闪烁是由交流和直流电弧炉，点焊机，大型交流电动机起动等波动负载（18）的运行引起的配电电路（10）中的电力质量问题。 发现基于电压源技术（VSC）的转换器（12）连接在接近波动负载的分流器中，具有降低电压闪烁电平的能力。 根据本发明，使用响应于有功和无功功率部件的闪烁控制系统（20）来利用VSC的能力。 闪烁控制系统（20）通过适应电力系统中的闪烁控制（例如H-infinity，线性二次高斯，最小方差控制和自调谐设计方法）来减少在公共耦合点观察到的电压闪烁（10） 具有固定或自调谐闪烁控制器参数。

公开(公告)号：WO1998011447A1

公开(公告)日：1998-03-19

申请号：PCT/US1997015081

申请日：1997-08-27

Applicant: ABB POWER T & D COMPANY INC.

Inventor： ABB POWER T & D COMPANY INC. ,  SHUEY, Kenneth, C. ,  HEMMINGER, Rodney, C.

IPC: G01R21/06

CPC classification number: G01R21/133 ,  G01R19/2513

Abstract: A method for measuring an AC current in a conductor (10) in which a DC current also exists including the step of obtaining a first AC current measurement, obtaining a measure of a power factor, fundamental frequency component and second harmonic component (S2) and adjusting the first AC current measurement in accordance with an error value to obtain a corrected current measurement (S3, S4). The error value is determined as a function of the power factor, fundamental frequency component and second harmonic component.

Abstract translation: 一种用于测量其中还存在直流电流的导体（10）中的交流电流的方法，包括获得第一交流电流测量，获得功率因数，基频分量和二次谐波分量（S2）的测量步骤，以及 根据误差值调整第一AC电流测量值以获得校正的电流测量值（S3，S4）。 误差值根据功率因数，基波分量和二次谐波分量来确定。

公开(公告)号：WO1997038428A1

公开(公告)日：1997-10-16

申请号：PCT/US1997004529

申请日：1997-04-04

Applicant: ABB POWER T & D COMPANY INC.

Inventor： ABB POWER T & D COMPANY INC. ,  LANOUE, Thomas, J. ,  BARBER, Terry, D. ,  HAAS, Michael, E.

IPC: H01F27/02

CPC classification number: H01F27/022

Abstract: The solid insulation transformer (10) has a rectangular core (50) covered with a compressible closed cell foam to eliminate stress during curing of the cast dielectric material (18) surrounding the core and during operation. Heat pipes (22) are placed between the inner coil and the core to extract heat before the temperature builds up. For safety and to eliminate the need for a separate enclosure, an outer multilayer casing (16) having an incorporated grounding conductive layer is provided to cover the sides of the cast body. The outer casing prevents explosion if dielectric breakdown and arcing occur, and reduces the danger of electric shock.

Abstract translation: 固体绝缘变压器（10）具有用可压缩闭孔泡沫覆盖的矩形芯（50），以消除围绕芯体和操作期间的铸造电介质材料（18）的固化期间的应力。 热管（22）放置在内线圈和芯之间，以在温度升高之前提取热量。 为了安全并且为了消除对单独的外壳的需要，提供具有并入的接地导电层的外部多层外壳（16）以覆盖铸造体的侧面。 如果发生电介质击穿和电弧，外壳可防止爆炸，并减少触电的危险。

公开(公告)号：WO1997013264A1

公开(公告)日：1997-04-10

申请号：PCT/US1996014315

申请日：1996-09-06

Applicant: ABB POWER T & D COMPANY INC.

Inventor： ABB POWER T & D COMPANY INC. ,  AUFERMANN, Albert, H. ,  KARNBACH, Robert, S.

IPC: H01H09/52

CPC classification number: H02B13/025 ,  H02B1/565

Abstract: An improved arc-resistant switchgear enclosure is disclosed. The disclosed arc-resistant switchgear enclosure provides a cost effective structure to collect and channel the pressure and hot gases through the switchgear enclosure. In preferred embodiments, an internal arc chamber (30') is formed by assembling modules and creating a void within the center of the switchgear enclosure. As multiple compartments or modules (10, 12', 14, 24) for a switchgear enclosure are connected, an arc chamber is created within the enclosure. Upon initiation of an arc fault within a particular compartment, a relief flap (40, 42) or cover (42) for that particular compartment opens to channel the pressure and the gases into the internal arc chamber or directly through the top of the enclosure (100). Pressures and gases are vented into the internal arc chamber and flow horizontally through the arc chamber until a path to the top of the switchgear enclosure is reached. These pressures and hot gases are then channeled upward and safely out of the switchgear enclosure. Also disclosed is a ventilation system for an arc-resistant switchgear enclosure that provides natural ventilation while preventing any arc gases from entering the lower, ventilated compartment or compartments. This ventilation system permits the proper venting of pressurized gases originating in the lower ventilated compartment or compartments.

Abstract translation: 公开了一种改进的抗电弧开关柜。 所公开的防弧开关柜提供了一种经济有效的结构，用于收集和通过开关设备外壳的压力和热气体。 在优选实施例中，通过组装模块并在开关柜外壳的中心内产生空隙形成内部电弧室（30'）。 由于用于开关设备外壳的多个隔室或模块（10,12'，14,24）连接，所以在外壳内产生电弧室。 在特定隔室内发生电弧故障时，用于该特定隔室的释放盖（40,42）或盖（42）打开以将压力和气体引导到内部电弧室中或者直接通过外壳的顶部 100）。 压力和气体被排放到内部电弧室中，并且水平地流过电弧室，直到达到开关柜外壳顶部的路径。 然后将这些压力和热气体向上和安全地引导到开关柜外。 还公开了一种用于防弧开关柜的通风系统，其提供自然通风，同时防止任何电弧气体进入下部通风隔室或隔间。 该通风系统允许适当地排出源于下通风隔间或隔间的加压气体。

公开(公告)号：WO1996030843A1

公开(公告)日：1996-10-03

申请号：PCT/US1996002592

申请日：1996-02-26

Applicant: ABB POWER T & D COMPANY INC.

Inventor： ABB POWER T & D COMPANY INC. ,  OCHOA, J., Rafael ,  HIRT, Robert, L.

IPC: G06F17/00

CPC classification number: H02J3/00 ,  G06Q30/0283 ,  H02J3/14 ,  H02J2003/007 ,  Y02B70/3225 ,  Y02E40/76 ,  Y02E60/76 ,  Y04S10/545 ,  Y04S20/222 ,  Y04S40/22 ,  Y04S50/14

Abstract: A computer workstation-based interactive tool for assessing the reliability of power system is disclosed. This tool can be used to determine the effect on the reliability of both substations and bulk generation and transmission systems of system additions, design alternatives, maintenance practices, substation configurations, and spare part policies. Each utility using the present invention is modeled analytically. The model includes load characteristics, demand projections, voltage profiles, energy and operating constraints, operator and automatic responses to the occurrence of contingent events, generating unit dispatch, contingency remedial actions, load shedding practices, demand-side management, and equipment failure modes including planned and unplanned maintenance.

Abstract translation: 公开了一种用于评估电力系统可靠性的基于计算机工作站的交互式工具。 该工具可用于确定变电所的可靠性，系统添加的批量生成和传输系统，设计备选方案，维护做法，变电站配置和备件策略的影响。 使用本发明的每个实用程序被分析地建模。 该模型包括负载特性，需求预测，电压曲线，能量和操作限制，运营商和自动应对或有事件的发生，生成单元调度，应急补救措施，卸载实践，需求侧管理和设备故障模式，包括 计划和计划外的维护。

公开(公告)号：WO1996022840A1

公开(公告)日：1996-08-01

申请号：PCT/US1996000808

申请日：1996-01-18

Applicant: ABB POWER T & D COMPANY INC.

Inventor： ABB POWER T & D COMPANY INC. ,  SEGAL, Vladimir, M.

IPC: B05C05/02

CPC classification number: B32B37/1292 ,  B32B2307/208 ,  H01F27/245 ,  H01F41/0233 ,  Y10T29/49078 ,  Y10T156/1702 ,  Y10T156/18

Abstract: A method for manufacturing a laminate comprising at least two sheets of magnetic material is disclosed. The laminate (10) may be used to form a stacked transformer core. The method increases the productivity of the core-stacking process, decreases the core loss destruction factor, decreases total core loss, decreases acoustic noise generated by the electrical device employing the laminate, and does all of this in a manner which is commercially practical. The method comprises applying an adhesive (12), preferably a hot melt adhesive, in a pattern of thin beads onto one side of a first lamina or sheet of magnetic material, the pattern comprising a plurality of lines, the lines being substantially parallel to each other and substantially perpendicular to a direction of grain orientation or rolling direction of the lamina. A second lamina is then stacked onto the one side of the first lamina, and then a compressive force is applied to specified areas of the laminate. The spacing between the respective lines of adhesive is preferably 1-20 millimeters and, for an approximate diameter (D) of each bead, the spacing (S) between the beads of each line is preferably between D and 2D.

Abstract translation: 公开了一种用于制造包括至少两片磁性材料的叠层的方法。 层叠体（10）可以用于形成堆叠的变压器芯。 该方法提高了芯堆叠过程的生产率，降低了芯损失破坏因子，降低了总磁芯损耗，降低了采用层压板的电气装置产生的声音噪声，并且以商业上可行的方式进行了所有这一切。 该方法包括以薄珠的图案将粘合剂（12），优选热熔粘合剂施加到第一层或磁性材料片的一侧上，该图形包括多条线，该线基本上平行于每条线 其他并且基本上垂直于层片的晶粒取向方向或轧制方向。 然后将第二层层叠在第一层的一侧上，然后将压缩力施加到层压板的特定区域。 各粘合剂线之间的间距优选为1-20毫米，对于每个珠粒的近似直径（D），每条线条之间的间距（S）优选在D和2D之间。

公开(公告)号：WO1996013730A1

公开(公告)日：1996-05-09

申请号：PCT/US1995013959

申请日：1995-10-31

Applicant: ABB POWER T & D COMPANY INC.

Inventor： ABB POWER T & D COMPANY INC. ,  NASRALLAH, Chaoukat, N.

IPC: G01R31/00

CPC classification number: G01R31/1209 ,  H02H1/0023

Abstract: An apparatus for detecting a partial discharge in a high voltage transformer comprising a live tank (100) comprises a metal box (200) detachably connected to the tank (100); a first acoustic sensor (210) inside the box for converting acoustic waves in a first frequency band to a first electrical output signal; signal conditioning circuitry (216) inside the box for amplifying and filtering the first electrical signal; an electrical to optical converter (222), inside the box, for converting the amplified and filtered electrical signal to an optical signal; a fiber optic link (300) for carrying the optical signal to a location remote from the transformer; and an optical to electrical converter (402) at the remote location for converting the optical signal to a second electrical signal, the second electrical signal being indicative of a partial discharge inside the tank (100). The second electrical signal may be fed to an oscilloscope (500) or recording equipment (600) for determination of the occurrence of a partial discharge.

Abstract translation: 一种用于检测包括活箱（100）的高压变压器中的局部放电的装置，包括可拆卸地连接到所述罐（100）的金属盒（200）。 盒内部的第一声传感器（210），用于将第一频带中的声波转换成第一电输出信号; 用于放大和滤波第一电信号的箱内的信号调节电路（216）; 在盒内部的电 - 光转换器（222），用于将放大和滤波的电信号转换成光信号; 用于将光信号传送到远离变压器的位置的光纤链路（300）; 以及在所述远程位置处的用于将所述光信号转换为第二电信号的光电转换器（402），所述第二电信号指示所述罐（100）内部的局部放电。 第二电信号可以被馈送到示波器（500）或记录设备（600），用于确定局部放电的发生。

公开(公告)号：WO1995024014A2

公开(公告)日：1995-09-08

申请号：PCT/US1995002802

申请日：1995-02-28

Applicant: ABB POWER T & D COMPANY INC.

Inventor： ABB POWER T & D COMPANY INC. ,  NOVOSEL, Damir ,  PHADKE, Arun, G.

IPC: G06K00/00

CPC classification number: H02H3/402 ,  G01R31/088

Abstract: A one-terminal process for locating a fault associated with a multi-phase electric power transmission system is disclosed. The process is based on the principle that the current in a fault sequence can be determined by a distribution factor in positive or negative sequence, i.e., it is only ncessary to determine the positive or negative sequence current in the fault. The fault may be a phase-to-ground fault, a phase-to-phase-to-ground fault, a phase-to-phase fault, or a phase-to-phase-to-phase fault. The process begins by obtaining data from one end of a transmission line. If the data is oscillographic data, phasors are calculated. If the measured data is in phasor form, or after phasors have been calculated, the fault type is determined. Thereafter, a decision is made whether the pre-fault data is sound. If the pre-fault data is sound, an appropriate equation is selected for the calculation of the fault location parameter "m". If the pre-fault data is not sound, a decision is made whether the phase is a three-phase fault. If so, a classical reactance formula is employed to compensate for the fault through a resistance by measuring only the imaginary part of the apparent line impedance. If the fault is not a three-phase fault, the reactance formula is not employed and the appropriate equation is selected for the calculation of the fault location parameter. Accurate fault location techniques for radial lines and long lines are also disclosed. The system is insensitive to the zero sequence current distribution factor. No information about the system source impedances is required.

Abstract translation: 公开了一种用于定位与多相电力传输系统相关的故障的单端过程。 该过程基于以下原理：故障序列中的电流可以由正或负序列中的分布因子确定，即仅确定故障中的正序或负序电流是唯一的。 故障可能是相对地故障，相间接地故障，相间故障或相间故障。 该过程通过从传输线的一端获取数据开始。 如果数据是示波数据，则计算相量。 如果测量数据是相量形式，或者在相量计算之后，则确定故障类型。 此后，判断故障前数据是否正确。 如果故障前数据是声音，则选择适当的方程来计算故障定位参数“m”。 如果故障前数据不正确，则确定相位是否为三相故障。 如果是这样，则采用经典电抗公式通过仅测量视在线阻抗的虚部来通过电阻来补偿故障。 如果故障不是三相故障，则不采用电抗公式，并选择适当的方程来计算故障定位参数。 还公开了用于径向线和长线的精确故障定位技术。 该系统对零序电流分布因子不敏感。 不需要有关系统源阻抗的信息。

公开(公告)号：WO1995007777A1

公开(公告)日：1995-03-23

申请号：PCT/US1994009710

申请日：1994-08-31

Applicant: ABB POWER T & D COMPANY INC.

Inventor： ABB POWER T & D COMPANY INC. ,  LINSENBARDT, Thomas, L. ,  HICKMAN, Daniel, H.

IPC: B21C35/02

CPC classification number: B21C23/06 ,  B21C23/005 ,  B21C25/00 ,  B21C35/00 ,  B21C35/02 ,  B21C37/02 ,  B21C37/04

Abstract: Twin metal billets (31) are fed to dual circumferential grooves (44) formed in a rotary wheel (43), and are advanced to a die (21) which has a die opening with a circumferentially discontinuous, annular cross section. The metal merges in the die opening and exits therefrom in the form of a slit tube (34, 36). The tube is advanced over a forming member (38) to form a flat strip (39). As the tube is advanced over the forming member, an alignment system (300) maintains the tube in a centred position. The alignment system includes a light source (302a, b) disposed within the tube and two arrays of photo-transistors (308) arranged to receive light from the light source, the amount of light sensed by each array being a function of the position of the slit in the tube relative to a desired position. Any difference results in a steering roll (318) in contact with the outer surface of the tube pivoting in a direction which will bring the tube back into alignment.

Abstract translation: 双金属坯料（31）被供给到形成在旋转轮（43）中的双周向槽（44），并且前进到具有周向不连续的环形横截面的模具开口的模具（21）。 该金属在模具开口中合并，并以狭缝管（34,36）的形式离开。 管在成形构件（38）上前进以形成扁平条（39）。 当管在成形构件上前进时，对准系统（300）将管保持在居中位置。 对准系统包括设置在管内的光源（302a，b）和布置成接收来自光源的光的两个光电晶体管阵列（308），每个阵列感测的光量是位置的函数 管中的狭缝相对于期望的位置。 任何差异导致转向辊（318）与管的外表面接触，该转向辊在使管回到对准的方向上枢转。