WO2009065294A1 - Unité de mesure automatique pour un transformateur de distribution de puissance - Google Patents

Unité de mesure automatique pour un transformateur de distribution de puissance Download PDF

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Publication number
WO2009065294A1
WO2009065294A1 PCT/CN2008/001765 CN2008001765W WO2009065294A1 WO 2009065294 A1 WO2009065294 A1 WO 2009065294A1 CN 2008001765 W CN2008001765 W CN 2008001765W WO 2009065294 A1 WO2009065294 A1 WO 2009065294A1
Authority
WO
WIPO (PCT)
Prior art keywords
unit
transformer
distribution
metering
distribution transformer
Prior art date
Application number
PCT/CN2008/001765
Other languages
English (en)
Chinese (zh)
Inventor
Bingren Zhou
Baoliang Li
Original Assignee
Bingren Zhou
Baoliang Li
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bingren Zhou, Baoliang Li filed Critical Bingren Zhou
Publication of WO2009065294A1 publication Critical patent/WO2009065294A1/fr

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R21/00—Arrangements for measuring electric power or power factor
    • G01R21/133—Arrangements for measuring electric power or power factor by using digital technique

Definitions

  • the invention relates to an automatic electric energy metering device applied to a distribution transformer, in particular to a distribution transformer for realizing primary side, secondary side electric energy metering, distribution transformer operation condition monitoring and having wireless data (middle A metering device for high-voltage power line carrier data, fiber-optic data transmission functions. It can be applied to electric energy metering, distribution transformer operation parameter monitoring and distribution variable line loss calculation.
  • the power sector is indirectly conducting power metering and electrical condition monitoring through the power distribution back-end equipment outside the distribution transformer.
  • the metering equipment is not only easily altered or destroyed, but also the measurement and measurement links cause construction inconvenience and data. Inaccurate measurement and other issues.
  • the collection of existing energy metering and distribution work states is indirect, or not quantitative enough, and becomes a bottleneck for improving the level of power distribution management.
  • the object of the present invention is to provide an automatic metering device for distribution transformers, which is used for directly realizing energy metering and collecting distribution transformer running state information for distribution transformers, in view of the shortcomings of current distribution energy metering and distribution parameter monitoring technology. And quantitatively determine the state value of the relevant part.
  • the implementation of the device uses a wireless or medium-high voltage power line carrier or optical fiber to implement data transmission, thereby realizing local or remote management and monitoring of energy metering and distribution conditions.
  • the technical solution of the invention is: an automatic metering device applied to a distribution transformer, which comprises a floating power supply unit, a high voltage capacitor divider, a wireless transmission unit or a medium and high voltage power line carrier communication unit or an optical fiber data communication unit, and voltage mutual inductance , current transformer, metering unit, distribution parameter monitoring unit.
  • the suspension power supply unit provides a power supply for the metering unit and the communication unit installed on the primary side of the distribution transformer; the metering unit mounted on the primary side relies on the signal provided by the primary side current transformer and the high voltage capacitor divider to the primary side.
  • the measuring unit installed on the secondary side relies on the signal provided by the secondary side voltage transformer and current transformer to realize the secondary side of the electric quantity, voltage, current and other items.
  • the measurement and distribution parameter monitoring unit is installed on the secondary side of the distribution transformer to realize the functions of distribution variable condition monitoring, variable loss and line loss calculation, phase loss, undervoltage, and power quality analysis.
  • the wireless transmission unit realizes wireless data exchange between the automatic metering device of the distribution transformer and the external device.
  • the medium-high voltage power line carrier communication unit serves as another way for the automatic metering device of the distribution transformer to communicate with the external device, and uses the medium-high voltage power line carrier for data exchange.
  • the optical fiber data transmission unit can also be used as a data communication mode between the primary side unit and the secondary side unit of the automatic metering device of the distribution transformer, and the communication mode between the distribution transformer and other devices.
  • the above-described automatic distribution metering device of the distribution transformer is further characterized in that it is mounted on a primary side and a secondary side of the transformer to realize metering.
  • the installation of the primary and secondary metering units can measure the amount of electricity, current, voltage, phase, power, power factor, and grid frequency of the primary and secondary sides.
  • the above-mentioned distribution transformer automatic metering device is further characterized in that the wireless transmission unit adopts two-way wireless transmission and reception, and is composed of a wireless receiving circuit and a wireless transmitting circuit.
  • the above-mentioned distribution transformer automatic metering device is further characterized in that the medium-voltage power line carrier communication unit adopts a medium-high voltage power line carrier to realize data transmission and reception, and is composed of a medium-high voltage power line carrier receiving circuit and a medium-high voltage power line carrier transmitting circuit.
  • the above-mentioned distribution transformer automatic metering device is further characterized in that the optical fiber communication unit is used to realize data communication between the primary side unit and the secondary side unit of the distribution transformer, and data communication between the distribution transformer and other devices.
  • the above-described distribution transformer automatic metering device is further characterized in that the current transformer is a current transformer for low-voltage power.
  • the automatic metering device of the distribution transformer of the invention realizes the primary side measurement of the distribution transformer according to the principle of "virtual potential". Since the automatic metering device of the distribution transformer simultaneously realizes the secondary side measurement of the distribution transformer, the calculation can be calculated.
  • the variable damage which significantly improves the monitoring and management level of the power distribution, and can be easily applied to the power distribution remote management system.
  • the advantages are: direct metering on the primary side; can be used as the high-voltage side metering part of the remote management system; can be used as the high-voltage side communication part of the remote management system.
  • a further advantage is that a multi-point, two-point transmission of the high-voltage side related metering value can be achieved.
  • FIG. 1 is a schematic block diagram of an automatic metering device for a distribution transformer of the present invention
  • FIG. 2 is a schematic block diagram of a primary side circuit of an automatic metering device for a distribution transformer according to the present invention
  • FIG. 3 is a block diagram of the secondary side circuit of the automatic metering device of the distribution transformer of the present invention.
  • a typical remote distribution management system consists of a distribution transformer automatic metering device and a field service terminal.
  • the automatic measuring device of the distribution transformer performs real-time measurement on the primary side and the secondary side of the distribution transformer and realizes internal wireless data transmission and exchange, and calculates data such as primary side, secondary side power, distribution change, and distribution case, and After wireless transmission to the field service terminal, the field service terminal performs calculation, storage and other processing on the data, and uploads the main station.
  • the main station comprehensively summarizes the data of each field terminal station, and performs list, display, and plot according to the specific requirements of the business department. Comprehensive processing of printing, storage, and alarming. [Examples]
  • an embodiment of the present invention is composed of a voltage transformer, a current transformer, a high voltage capacitor divider, a suspension power unit, a metering unit, a distribution parameter monitoring unit, and a wireless transmission unit
  • the floating power unit is A wide dynamic stable feed power supply specially designed for taking power from a high voltage power grid, applying a bootstrap stability principle output voltage and meeting actual needs
  • the wireless transmission unit adopts two-way wireless transceiver to construct an adaptive low power radio frequency transmission algorithm, Comprehensive ASK or FSK, POLLING and other system mechanisms ensure wireless data transmission between the automatic metering device and the field service terminal;
  • the metering unit installed on the primary side establishes a "virtual potential" reference point for the direct loop of the floating power unit.
  • the coupling voltage is applied to the loop voltage and current to measure the electric quantity, current, voltage, phase, power, power factor and grid frequency of the primary side of the distribution transformer.
  • the metering unit installed on the secondary side measures the electric quantity, current and voltage of the secondary side of the distribution transformer. , phase, power, power factor, grid frequency Reading the data calculated by the metering unit installed on the primary side through the wireless transmission unit and calculating the parameters of the distribution change condition such as the distribution change and the distribution temperature; after receiving the call command of the field service terminal, the wireless transmission unit will The data is sent wirelessly to the field service terminal.
  • FIG. 2 is a block diagram of the primary side circuit of the automatic metering device for distribution transformers.
  • the floating power supply unit builds a low-voltage power supply based on the "virtual potential" principle with a primary side high voltage as a reference point, and provides a power supply for the primary side metering unit, the wireless transmission unit, and the processor;
  • the current transformer uses a low-voltage power current transformer, The output current signal is sampled and conditioned and supplied to the metering unit;
  • the high-voltage capacitor voltage divider supplies the primary side high voltage to the metering unit after sampling and signal conditioning based on the virtual ground voltage division;
  • the metering unit performs the power metering and
  • the data is provided to the processor, and the processor stores data for the data provided by the metering unit; after receiving the wireless command, the wireless transmission unit transmits the command to the processor, and the processor performs wireless data response according to the command request.
  • Figure 3 is a block diagram of the secondary side circuit of the automatic metering device of the distribution transformer.
  • the a, b, c three-phase voltage transformer provides the power supply for the secondary side circuit and provides the voltage signal required by the metering unit;
  • a, b, c three-phase current transformer provides the current signal required by the metering unit;
  • the metering unit measures according to the output signals of the voltage transformer and the current transformer;
  • the distribution monitoring unit realizes the distribution temperature, the distribution variable loss calculation, the undervoltage, etc.
  • the monitoring of the variable working condition the CPU performs unified processing on the data of the memory, the clock, the distribution monitoring unit, and the measuring unit, performs data exchange with the primary side through the wireless transmission unit, and performs processing; the CPU receives the distribution external device through the wireless transmission unit.
  • the wireless command responds to the data via the wireless transmission unit according to the command requirements.

Abstract

Un système de gestion de distribution local ou distant, particulièrement une unité de mesure automatique appliquée à un transformateur de distribution, comprend une alimentation à interruption (1), un diviseur de capacitances haute tension (2), un transformateur de courant (5), une unité de transmission sans fil (4) et une unité de mesure (3), qui sont prévus dans l'enroulement primaire (6) du transformateur, et un transformateur de puissance (22), un transformateur de courant (21), une unité de surveillance de paramètres de transformateur (24) et une unité de mesure (28), qui sont prévus dans l'enroulement secondaire (29) du transformateur. Par la mesure de l'enroulement primaire du transformateur et par l'utilisation de la mesure de l'enroulement secondaire effectuée par l'unité de mesure automatique, la perte du transformateur peut être calculée.
PCT/CN2008/001765 2007-11-02 2008-10-20 Unité de mesure automatique pour un transformateur de distribution de puissance WO2009065294A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNB2007101346219A CN100527181C (zh) 2007-11-02 2007-11-02 配电变压器自动计量装置
CN200710134621.9 2007-11-02

Publications (1)

Publication Number Publication Date
WO2009065294A1 true WO2009065294A1 (fr) 2009-05-28

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PCT/CN2008/001765 WO2009065294A1 (fr) 2007-11-02 2008-10-20 Unité de mesure automatique pour un transformateur de distribution de puissance

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CN (1) CN100527181C (fr)
WO (1) WO2009065294A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100527181C (zh) * 2007-11-02 2009-08-12 江苏通驰自动化系统有限公司 配电变压器自动计量装置
CN101354418B (zh) * 2008-09-22 2011-07-13 河南省电力公司商丘供电公司 一种电力变压器不拆线试验方法
CN102053203A (zh) * 2010-11-04 2011-05-11 武汉国测恒通智能仪器有限公司 高压电能质量检测方法与装置
CN103323647B (zh) * 2013-06-07 2015-12-09 国家电网公司 分级绝缘电磁式pt一次侧电流监测装置及方法
CN103439616A (zh) * 2013-09-05 2013-12-11 国家电网公司 一种变损精确测量装置
CN104502691A (zh) * 2014-12-24 2015-04-08 镇江长河电力技术有限公司 一种配电变压器能效在线监测分析装置
CN104569664A (zh) * 2014-12-24 2015-04-29 镇江长河电力技术有限公司 一种具有配电变压器能效在线监测分析装置的分析系统
CN104515919A (zh) * 2014-12-24 2015-04-15 镇江长河电力技术有限公司 一种配电变压器能效在线监测分析系统
EP3208622B1 (fr) * 2016-02-18 2021-01-20 ABB Power Grids Switzerland AG Procédé et système de mesure de perte de puissance dans un transformateur de puissance
CN107064625A (zh) * 2017-06-06 2017-08-18 宁波恒力达科技有限公司 一种三相四线制高压电能表及测量方法

Citations (5)

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JPS5934166A (ja) * 1982-08-20 1984-02-24 Mitsubishi Electric Corp トランス損失測定装置
CN2253041Y (zh) * 1996-03-18 1997-04-23 李卡 高压计量式电力变压器
CN2812017Y (zh) * 2005-03-10 2006-08-30 武汉国测科技股份有限公司 电力单相高压电能计量模块
CN1866033A (zh) * 2005-05-20 2006-11-22 湖南泰通电力科技有限公司 电网防窃电实时监测系统
CN101183485A (zh) * 2007-11-02 2008-05-21 江苏通驰自动化系统有限公司 配电变压器自动计量装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5934166A (ja) * 1982-08-20 1984-02-24 Mitsubishi Electric Corp トランス損失測定装置
CN2253041Y (zh) * 1996-03-18 1997-04-23 李卡 高压计量式电力变压器
CN2812017Y (zh) * 2005-03-10 2006-08-30 武汉国测科技股份有限公司 电力单相高压电能计量模块
CN1866033A (zh) * 2005-05-20 2006-11-22 湖南泰通电力科技有限公司 电网防窃电实时监测系统
CN101183485A (zh) * 2007-11-02 2008-05-21 江苏通驰自动化系统有限公司 配电变压器自动计量装置

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Publication number Publication date
CN100527181C (zh) 2009-08-12
CN101183485A (zh) 2008-05-21

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