公开(公告)号：WO1993017345A1

公开(公告)日：1993-09-02

申请号：PCT/US1992009632

申请日：1992-11-05

Applicant: ABB POWER T&D COMPANY INC.

Inventor： ABB POWER T&D COMPANY INC. ,  HEMMINGER, Rodney, C. ,  MUNDAY, Mark, L.

IPC: G01R13/00

CPC classification number: G01D4/00 ,  G01R21/133 ,  G01R22/00 ,  G01R22/10 ,  G01R35/04 ,  Y02B90/248 ,  Y04S20/52

Abstract: Methods and apparatus for electronically displaying metered electrical energy are disclosed. A first processor (14) receives voltage and current signals and determines electrical energy. The first processor (14) generates an energy signal representative of the electrical energy determination. A second processor (16), connected to said first processor, receives the energy signal and generates a display signal representative of electrical energy information. A display (30) is connected to receive the display signal and displays the electrical energy information. In a first embodiment it is preferred for the first processor (14) to determine units of electrical energy from the voltage and current signals and to generate an energy signal representative of the determination of such units and the rate at which the units are determined. In another embodiment the first processor determines and displays watt units, apparent reactive energy units and the rate at which such units are determined. The display (30) may provide energy flow direction information.

Abstract translation: 公开了用于电子显示计量电能的方法和装置。 第一处理器（14）接收电压和电流信号并确定电能。 第一处理器（14）产生代表电能确定的能量信号。 连接到所述第一处理器的第二处理器（16）接收能量信号并产生代表电能信息的显示信号。 连接显示器（30）以接收显示信号并显示电能信息。 在第一实施例中，优选地，第一处理器（14）从电压和电流信号确定电能的单位，并且产生表示这些单元的确定的能量信号以及确定单元的速率。 在另一实施例中，第一处理器确定并显示瓦特单位，表观无功电能单元以及确定这些单元的速率。 显示器（30）可以提供能量流向信息。

公开(公告)号：WO1993017347A1

公开(公告)日：1993-09-02

申请号：PCT/US1992009563

申请日：1992-11-06

Applicant: ABB POWER T&D COMPANY INC.

Inventor： ABB POWER T&D COMPANY INC. ,  MOORMAN, Michael, C.

IPC: G01R19/10

CPC classification number: G01R15/04

Abstract: A method for measuring an unknown voltage (VIN) using a voltage divider network (R1, R2 and R3) in such a way that uncertainties in the values of the resistances do not affect the measurement. The unknown voltage is divided into three fractional voltages, the fractional voltages are measured, and the unknown voltage is divided with a voltage divider comprising first (R1), second (R2) and third (R3) resistors, and a first voltage (V01) is measured across the first resistor, a second voltage (V02) is measured across the second resistor and a third voltage (V03) is measured across the third resistor. The unknown voltage VIN is computed in accordance with the equations disclosed in the specification.

公开(公告)号：WO1994005091A1

公开(公告)日：1994-03-03

申请号：PCT/US1993007883

申请日：1993-08-23

Applicant: ABB POWER T&D COMPANY INC.

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

IPC: H04B03/00

CPC classification number: H04B15/04 ,  H04B3/56 ,  H04B2203/5425 ,  H04B2203/5433 ,  H04B2203/5483 ,  H04B2203/5491 ,  H04L25/0266

Abstract: A power distribution system comprises a high voltage transmission line (10), a transformer (12), a low voltage transmission line coupled to the secondary winding of the transformer, a carrier transponder (18) coupled to the low voltage transmission line, and a capacitor (20). The capacitor (20) is matched to the leakage reactance such that a capacitive reactance of the capacitor combines with the leakage reactance to produce an anti-resonant condition that effectively increases the current in the secondary winding and thereby improves communications between the transponder and a power generation sub-station.

Abstract translation: 配电系统包括高压传输线（10），变压器（12），耦合到变压器的次级绕组的低压传输线，耦合到低电压传输线的载波应答器（18）和 电容器（20）。 电容器（20）与泄漏电抗匹配，使得电容器的电容性电抗与漏电抗相结合以产生有效地增加次级绕组中的电流的反谐振条件，从而改善应答器与功率之间的通信 生成子站。

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).