CN203643596U - Multi-meter-position three-phase electric energy meter detection system - Google Patents

Multi-meter-position three-phase electric energy meter detection system Download PDF

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Publication number
CN203643596U
CN203643596U CN201320835289.XU CN201320835289U CN203643596U CN 203643596 U CN203643596 U CN 203643596U CN 201320835289 U CN201320835289 U CN 201320835289U CN 203643596 U CN203643596 U CN 203643596U
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CN
China
Prior art keywords
electric energy
phase
energy meter
meter
epi
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CN201320835289.XU
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Chinese (zh)
Inventor
邓诗芸
张俊林
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四川德阳德仪电子仪器有限公司
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Priority to CN201320835289.XU priority Critical patent/CN203643596U/en
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Publication of CN203643596U publication Critical patent/CN203643596U/en

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Abstract

The utility model provides a multi-meter-position three-phase electric energy meter detection system. The detection system comprises a three-phase current source. The three-phase current source, a standard meter and each electric energy meter to be detected occupy a meter position respectively. Primary sides of three-phase voltage isolation mutual inductors in the loops of the meter positions are connected in parallel, and then connected with a three-phase voltage source. Secondary sides are connected with electric energy meters to be detected in the meter positions. The beneficial effects of the detection system are that, the detection system employs the three-phase voltage isolation mutual inductors to replace existing current isolation mutual inductors to play an isolation effect in a three-phase circuit; current series connection and voltage isolation of each electric energy meter to be detected are achieved; the detection system has the same effects with a current isolation mutual inductor isolation current loop.

Description

A kind of multi-epitope three-phase electric energy meter verification system

Technical field

The utility model relates to electric energy calibrating field, relates in particular to a kind of multi-epitope three-phase electric energy meter verification system.

Background technology

At present, the three-phase electric energy meter (intraconnected electric energy meter) that electric current and voltage measurement circuit cannot separate, in producing and applying, quantity is in continuous expansion.While utilizing existing electric energy meter calibration technology to examine and determine this electric energy meter, must in the each epi-position of electric energy meter checking device, increase the three-phase current isolation transformer of a 1:1, guarantee is surveyed the correctness of verification result.

But this electric current isolation transformer is because the requirement of its measurement range is very wide, and power requirement is very large, ensureing that, under the prerequisite of measuring accuracy, volume and weight is just very huge.And the each epi-position of equipment for three-phase electrical energy meter needs to configure a this current transformer, can increase great cost, and cause the structural design of device entirety and production and transport also to become difficulty, be obviously unfavorable for promoting the use of of multi-epitope equipment for three-phase electrical energy meter.

Summary of the invention

For addressing the above problem, the utility model provides a kind of multi-epitope three-phase electric energy meter verification system, comprises a three-phase current source, a three-phase voltage source, and a standard scale, each tested electric energy meter occupies an epi-position; Wherein,

Described three-phase current source is connected with standard scale, and standard scale is connected successively with each tested electric energy meter, and the current return of all epi-positions directly series connection is received electric energy meter meter adapting-seat,

Described three-phase voltage source is connected with standard scale, each tested electric energy meter connects, and forms the voltage circuit of each epi-position, adds three-phase voltage isolation transformer in the voltage circuit of each epi-position.

Further, in the voltage circuit of each epi-position, after the parallel connection of three-phase voltage isolation transformer primary side, be connected to three-phase voltage source, secondary side is connected to the tested electric energy meter of each epi-position.

The beneficial effects of the utility model are: native system adopts three-phase voltage isolation transformer to substitute existing electric current isolation transformer and plays buffer action in three-phase circuit, realize each tested electric energy meter " current-series, voltage isolation ", there is the effect equal with electric current isolation transformer isolation current return.Simultaneously, due to comparatively fixing (50V-400V) of equipment for three-phase electrical energy meter voltage measurement scope, power also less (every epi-position is lower than 10VA), therefore voltage circuit being isolated to needed voltage transformer (VT) volume and weight all can be very little, do not need bypass relay yet, cost reduces greatly, install integrally-built design and transport install also very simple and convenient, be conducive to promoting the use of of multi-epitope equipment for three-phase electrical energy meter.

Brief description of the drawings

Fig. 1 is organigram of the present utility model.

Fig. 2 is the utility model voltage circuit exemplary plot.

Embodiment

The utility model provides a kind of epi-position partition method of multi-epitope equipment for three-phase electrical energy meter.Different from original technology: original technology is " voltage parallel, electric current isolation "; The utility model is " current-series, voltage isolation ".Be elaborated below.

As shown in Figure 1, be the schematic diagram of native system.Native system comprises a three-phase current source, a three-phase voltage source, a standard scale.Wherein, each tested electric energy meter occupies an epi-position.

Described three-phase current source is connected with standard scale, and standard scale is connected successively with each tested electric energy meter, and the current return of all epi-positions directly series connection is received electric energy meter meter adapting-seat,

Described three-phase voltage source is connected with standard scale, each tested electric energy meter connects, and forms the voltage circuit of each epi-position.

As shown in Figure 2, for adding the voltage circuit schematic diagram (other epi-positions are identical) of an epi-position of three-phase voltage isolation transformer: be connected to three-phase voltage source after the three-phase voltage isolation transformer primary side parallel connection of all epi-positions, secondary side is received the electric energy meter of each epi-position, realizes the voltage isolation of each epi-position.

The beneficial effects of the utility model are:

Native system adopts three-phase voltage isolation transformer to substitute existing electric current isolation transformer and plays buffer action in three-phase circuit, realize each tested electric energy meter " current-series, voltage isolation ", there is the effect equal with electric current isolation transformer isolation current return.Simultaneously, due to comparatively fixing (50V-400V) of equipment for three-phase electrical energy meter voltage measurement scope, power also less (every epi-position is lower than 10VA), therefore voltage circuit being isolated to needed voltage transformer (VT) volume and weight all can be very little, do not need bypass relay yet, cost reduces greatly, install integrally-built design and transport install also very simple and convenient, be conducive to promoting the use of of multi-epitope equipment for three-phase electrical energy meter.

Claims (2)

1. a multi-epitope three-phase electric energy meter verification system, is characterized in that, comprises a three-phase current source, a three-phase voltage source, a standard scale, and each tested electric energy meter occupies an epi-position; Wherein,
Described three-phase current source is connected with standard scale, and standard scale is connected successively with each tested electric energy meter, and the current return of all epi-positions directly series connection is received electric energy meter meter adapting-seat,
Described three-phase voltage source is connected with standard scale, each tested electric energy meter connects, and forms the voltage circuit of each epi-position, adds three-phase voltage isolation transformer in the voltage circuit of each epi-position.
2. multi-epitope three-phase electric energy meter verification system as claimed in claim 1, is characterized in that, in the voltage circuit of each epi-position, after the parallel connection of three-phase voltage isolation transformer primary side, is connected to three-phase voltage source, and secondary side is connected to the tested electric energy meter of each epi-position.
CN201320835289.XU 2013-12-18 2013-12-18 Multi-meter-position three-phase electric energy meter detection system CN203643596U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320835289.XU CN203643596U (en) 2013-12-18 2013-12-18 Multi-meter-position three-phase electric energy meter detection system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320835289.XU CN203643596U (en) 2013-12-18 2013-12-18 Multi-meter-position three-phase electric energy meter detection system

Publications (1)

Publication Number Publication Date
CN203643596U true CN203643596U (en) 2014-06-11

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104237841A (en) * 2014-09-30 2014-12-24 国家电网公司 Isolation type current leakage detecting device for electric energy meter insulation tests
CN104267369A (en) * 2014-08-01 2015-01-07 云南电力试验研究院(集团)有限公司电力研究院 Separation achieving method for single-phase-three-phase electric energy meter compatible calibration voltage system
CN104267370A (en) * 2014-08-01 2015-01-07 云南电力试验研究院(集团)有限公司电力研究院 Method for achieving compatible meter hanging of meter hanging bases for single-phase electric energy meters and three-phase electric energy meters
CN104316896A (en) * 2014-10-28 2015-01-28 国家电网公司 Method for calibrating errors of electric energy meter under influence of direct currents and even-order harmonic
CN105487041A (en) * 2015-12-28 2016-04-13 云南电网有限责任公司电力科学研究院 Electric energy metering device performance detection system
CN105911512A (en) * 2016-06-06 2016-08-31 国家电网公司 Intelligent electric energy meter constant test system and test method thereof

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104267369B (en) * 2014-08-01 2017-01-18 云南电力试验研究院(集团)有限公司电力研究院 Separation achieving method for single-phase-three-phase electric energy meter compatible calibration voltage system
CN104267369A (en) * 2014-08-01 2015-01-07 云南电力试验研究院(集团)有限公司电力研究院 Separation achieving method for single-phase-three-phase electric energy meter compatible calibration voltage system
CN104267370A (en) * 2014-08-01 2015-01-07 云南电力试验研究院(集团)有限公司电力研究院 Method for achieving compatible meter hanging of meter hanging bases for single-phase electric energy meters and three-phase electric energy meters
CN104267370B (en) * 2014-08-01 2017-07-28 云南电力试验研究院(集团)有限公司电力研究院 The compatible pocket watch solution of list/three-phase electric energy meter pocket watch seat
CN104237841A (en) * 2014-09-30 2014-12-24 国家电网公司 Isolation type current leakage detecting device for electric energy meter insulation tests
CN104316896A (en) * 2014-10-28 2015-01-28 国家电网公司 Method for calibrating errors of electric energy meter under influence of direct currents and even-order harmonic
CN105487041A (en) * 2015-12-28 2016-04-13 云南电网有限责任公司电力科学研究院 Electric energy metering device performance detection system
CN105911512A (en) * 2016-06-06 2016-08-31 国家电网公司 Intelligent electric energy meter constant test system and test method thereof

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
PE01 Entry into force of the registration of the contract for pledge of patent right
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of utility model: Multi-meter-position three-phase electric energy meter detection system

Effective date of registration: 20180907

Granted publication date: 20140611

Pledgee: China branch of the postal savings bank Limited by Share Ltd in Deyang City

Pledgor: SICHUAN DEYANG DEYI ELECTRONIC INSTRUMENT CO., LTD.

Registration number: 2018510000090

Denomination of utility model: Multi-meter-position three-phase electric energy meter detection system

Effective date of registration: 20180907

Granted publication date: 20140611

Pledgee: China branch of the postal savings bank Limited by Share Ltd in Deyang City

Pledgor: SICHUAN DEYANG DEYI ELECTRONIC INSTRUMENT CO., LTD.

Registration number: 2018510000090

PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20200609

Granted publication date: 20140611

Pledgee: China branch of the postal savings bank Limited by Share Ltd. in Deyang City

Pledgor: SICHUAN DEYANG DEYI ELECTRONIC INSTRUMENT Co.,Ltd.

Registration number: 2018510000090