CN104614698A - Three-phase analogue loader for field calibration of energy measurement device - Google Patents
Three-phase analogue loader for field calibration of energy measurement device Download PDFInfo
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- CN104614698A CN104614698A CN201510055022.2A CN201510055022A CN104614698A CN 104614698 A CN104614698 A CN 104614698A CN 201510055022 A CN201510055022 A CN 201510055022A CN 104614698 A CN104614698 A CN 104614698A
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Abstract
The invention discloses a three-phase analogue loader for field calibration of an energy measurement device. The three-phase analogue loader comprises three-phase simulation loads which are three groups of inductance coils, wherein each group of inductance coils is wound on cylindrical iron core; the three-phase analogue loader further comprises the energy measurement device for detecting electric energy of three-phase analogue loads, a connecting wire for connecting the three-phase analogue loads and the energy measurement device, a switch for shifting the three-phase analogue loads and being in series connected among the three-phase analogue loads and a three-phase power supply, and an indicating lamp for indicating the magnitude of the analogue loads. According to the three-phase analogue loader, after a transformer substation performs load operation, and the energy measurement device can safely, accurately and reliably operate, thus the three-phase analogue loader is small in volume, convenient to carry, practical and flexible.
Description
Technical field
The invention belongs to Electric Energy Metering Technology field, be specifically related to a kind of electric power meter field-checking three-phase simulation load device.
Background technology
In practical application, usual employing electric power meter on-site calibrator carries out the wiring check of electric energy metering secondary, electric energy metering secondary wiring check and judgement can need be carried out with when load at electric energy meter, therefore power transmission cannot to complete wiring check in charged situation the same day, need wait until that circuit is with after load, wiring check is done at scene of again arriving.If fail to find mistake by wiring check in time, occur security incident or economic accident, the consequence caused is by hardly imaginable.For guaranteeing the safe operation of electrical network and metering accurately and reliably, before carrying out circuit on-load, connection box of electric energy meter inspection is very important.
According to the measuring principle of electric energy meter field check meter, no matter three-phase three-wire electric energy meter or three-phase and four-line electric energy meter, connection box of electric energy meter inspection is carried out to utilize electric power meter on-site calibrator, the circuit that electric energy meter measures must with certain load, consider the no-load running situation after newly-built transformer station power transmission, only adopt electric power meter on-site calibrator cannot complete zero load circuit electric energy meter wiring check.
Summary of the invention
In order to solve the problem, the invention provides a kind of electric power meter field-checking three-phase simulation load device.
For achieving the above object, the present invention is by the following technical solutions:
A kind of electric power meter field-checking three-phase simulation load device, comprise three-phase simulation load, described three-phase simulation load is three groups of telefaults, often organizes telefault and is wrapped on the cylindrical plunger of; And for the electric power meter of the electric energy size that detects three-phase simulation load; And for connecting the connecting line between three-phase simulation load and electric power meter; And for switching the switch of three-phase simulation load, it is serially connected with between three-phase simulation load and three-phase supply; And in order to the pilot lamp of instruction simulation load.
The described connecting line for connecting between three-phase simulation load and electric power meter, comprise the voltage connecting wire of three-phase simulation load current extension line and three-phase simulation load, the voltage connecting wire of described three-phase simulation load is connected to the voltage port of electric power meter, and described three-phase simulation load current extension line is connected to the electric current port of electric power meter.
Described electric power meter is three-phase three-wire electric energy meter.
Described pilot lamp is serially connected on the three-phase simulation load current extension line between three-phase simulation load current extraction port and the electric current port of electric power meter.
Described three-phase simulation load current extension line is the some strands of copper conductors be wrapped on telefault.
Described cylindrical plunger is hollow cylinder iron core.
A kind of electric power meter field-checking three-phase simulation load device, comprise three-phase simulation load, described three-phase simulation load is three groups of telefaults, often organizes telefault and is wrapped on the cylindrical plunger of; And for the electric power meter of the electric energy size that detects three-phase simulation load; And for connecting the connecting line between three-phase simulation load and electric power meter; And for switching the switch of three-phase simulation load, it is serially connected with between three-phase simulation load and three-phase supply; And in order to the pilot lamp of instruction simulation load; Described electric power meter is three-phase and four-line electric energy meter.
The described connecting line for connecting between three-phase simulation load and electric power meter, comprises three-phase simulation load current extension line, the voltage connecting wire of three-phase simulation load and the zero line extension line of three-phase simulation load; The voltage connecting wire of described three-phase simulation load is connected to the voltage port of electric power meter, described three-phase simulation load current extension line is connected to the electric current port of electric power meter, and the zero line extension line of three-phase simulation load is connected to the zero line port of electric power meter.
Described pilot lamp is serially connected on the three-phase simulation load current extension line between three-phase simulation load current extraction port and the electric current port of electric power meter.
Described three-phase simulation load current extension line is the some strands of copper conductors be wrapped on telefault.
Beneficial effect of the present invention is:
The electric power meter field-checking three-phase simulation load device that the present invention proposes, simulation threephase load is added when the electric power meter of transformer station does not have load, coordinate practicality with existing electric energy meter on-site calibrator, wiring check is carried out to electric power meter; Ensure that substation line bringing onto load runs safe, accurate, the reliability service of rear measuring apparatus; Compact of the present invention, easy to carry, flexibly practical.
Accompanying drawing explanation
Fig. 1 is electrical schematic diagram of the present invention;
Fig. 2 is phase three-wire three fictitious load device wiring diagram of the present invention;
Fig. 3 is three-phase and four-line fictitious load device wiring diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention will be further described:
As shown in Figure 1, a kind of electric power meter field-checking three-phase simulation load device, comprise three-phase simulation load, described three-phase simulation load is three groups of telefaults L1, L2 and L3, often organizes telefault and is wrapped on the hollow cylinder iron core of; And for the electric power meter of the electric energy size that detects three-phase simulation load; And for connecting the connecting line between three-phase simulation load and electric power meter; And for switching K switch 1, K2 and K3 of three-phase simulation load, it is serially connected with between three-phase simulation load and three-phase supply respectively; And in order to pilot lamp HL1, HL2 and HL3 of instruction simulation load; Described electric power meter is electric energy meter.
Described often group telefault size is 0.154H; K switch 1, K2, K3 of carrying out load switching are set according to required fictitious load size; The voltage connecting wire of described fictitious load is the sub-thread copper conductor be connected with electric energy meter tail voltage port, and described three-phase current extension line is the multiply copper conductor be wrapped on telefault; Described pilot lamp HL1, HL2, HL3 are three of arranging corresponding to threephase load, pilot lamp HL1 series connection A phase current extension line, pilot lamp HL2 series connection B phase current extension line, and pilot lamp HL3 series connection C phase current extension line, in order to indicate the size of switching load.
Figure 2 shows that the phase three-wire three fictitious load device wiring diagram of invention.The A phase current lead-in wire of three-phase simulation load device connects electric energy meter A phase current port; The C phase current lead-in wire of three-phase simulation load device connects electric energy meter C phase current port; The A phase voltage lead-in wire of three-phase simulation load device connects electric energy meter A phase voltage port; The C phase voltage lead-in wire of three-phase simulation load device connects electric energy meter C phase voltage port; The N phase voltage lead-in wire of three-phase simulation load device connects electric energy meter B phase voltage port.
Figure 3 shows that the three-phase and four-line fictitious load device wiring diagram of invention.The A phase current lead-in wire of three-phase simulation load device connects electric energy meter A phase current port; The B phase current lead-in wire of three-phase simulation load device connects electric energy meter B phase current port; The C phase current lead-in wire of three-phase simulation load device connects electric energy meter C phase current port; The A phase voltage lead-in wire of three-phase simulation load device connects electric energy meter A phase voltage port; The B phase voltage lead-in wire of three-phase simulation load device connects electric energy meter B phase voltage port; The C phase voltage lead-in wire of three-phase simulation load device connects electric energy meter C phase voltage port; The N phase terminal of three-phase simulation load device connects electric energy meter N phase port.
The N phase of described three-phase simulation load device is the zero line of three-phase simulation load device.
Three-phase three-wire electric energy meter phase voltage is 57.7V, and three-phase and four-line electric energy meter phase voltage is 220V, and for ensureing sensitivity and the security of the verification of three-phase simulation load device, the rated voltage of fictitious load device is 300V, and bearing power is 3kW.
Electric power meter field-checking three-phase simulation load device of the present invention uses step as follows:
(1) according to connection box of electric energy meter mode, determine the mode of connection of three-phase simulation load device, the voltage port of three-phase simulation load device and electric current port are connected to electric energy meter voltage port and electric current port successively; Selector switch K1, K2 and K3 are got to a point position;
(2) according to practical operation situation, threephase load is connected work by selector switch K1, K2 and K3, and selector switch has three class: zero load, semi-load, entirely carry, and checks that whether pilot lamp work normal, confirm normal after start field-checking work;
(3) after field-checking terminates, first should disconnect the input of electric energy meter voltage, check whether three-phase simulation load device pilot lamp extinguishes, after lamp to be instructed extinguishes, can off voltage electric current connecting line, power cut-off.
By reference to the accompanying drawings the specific embodiment of the present invention is described although above-mentioned; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection scope of the present invention.
Claims (10)
1. an electric power meter field-checking three-phase simulation load device, is characterized in that, comprise three-phase simulation load, and described three-phase simulation load is three groups of telefaults, often organizes telefault and is wrapped on the cylindrical plunger of; And
For detecting the electric power meter of the electric energy size of three-phase simulation load; And
For connecting the connecting line between three-phase simulation load and electric power meter; And
For switching the switch of three-phase simulation load, it is serially connected with between three-phase simulation load and three-phase supply; And
In order to the pilot lamp of instruction simulation load.
2. a kind of electric power meter field-checking three-phase simulation load device as claimed in claim 1, it is characterized in that, the described connecting line for connecting between three-phase simulation load and electric power meter, comprise the voltage connecting wire of three-phase simulation load current extension line and three-phase simulation load, the voltage connecting wire of described three-phase simulation load is connected to the voltage port of electric power meter, and described three-phase simulation load current extension line is connected to the electric current port of electric power meter.
3. a kind of electric power meter field-checking three-phase simulation load device as claimed in claim 2, it is characterized in that, described electric power meter is three-phase three-wire electric energy meter.
4. a kind of electric power meter field-checking three-phase simulation load device as claimed in claim 1, it is characterized in that, described pilot lamp is serially connected on the three-phase simulation load current extension line between three-phase simulation load current extraction port and the electric current port of electric power meter.
5. a kind of electric power meter field-checking three-phase simulation load device as described in claim 2 or 4, it is characterized in that, described three-phase simulation load current extension line is the some strands of copper conductors be wrapped on telefault.
6. a kind of electric power meter field-checking three-phase simulation load device as claimed in claim 1, it is characterized in that, described cylindrical plunger is hollow cylinder iron core.
7. an electric power meter field-checking three-phase simulation load device, is characterized in that, comprise three-phase simulation load, and described three-phase simulation load is three groups of telefaults, often organizes telefault and is wrapped on the cylindrical plunger of; And
For detecting the electric power meter of the electric energy size of three-phase simulation load; And
For connecting the connecting line between three-phase simulation load and electric power meter; And
For switching the switch of three-phase simulation load, it is serially connected with between three-phase simulation load and three-phase supply; And
In order to the pilot lamp of instruction simulation load; Described electric power meter is three-phase and four-line electric energy meter.
8. a kind of electric power meter field-checking three-phase simulation load device as claimed in claim 7, it is characterized in that, the described connecting line for connecting between three-phase simulation load and electric power meter, comprises three-phase simulation load current extension line, the voltage connecting wire of three-phase simulation load and the zero line extension line of three-phase simulation load; The voltage connecting wire of described three-phase simulation load is connected to the voltage port of electric power meter, described three-phase simulation load current extension line is connected to the electric current port of electric power meter, and the zero line extension line of three-phase simulation load is connected to the zero line port of electric power meter.
9. a kind of electric power meter field-checking three-phase simulation load device as claimed in claim 7, it is characterized in that, described pilot lamp is serially connected on the three-phase simulation load current extension line between three-phase simulation load current extraction port and the electric current port of electric power meter.
10. a kind of electric power meter field-checking three-phase simulation load device as claimed in claim 8 or 9, it is characterized in that, described three-phase simulation load current extension line is the some strands of copper conductors be wrapped on telefault.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510055022.2A CN104614698B (en) | 2015-02-03 | 2015-02-03 | Electric power meter field-checking loads device with three-phase simulation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510055022.2A CN104614698B (en) | 2015-02-03 | 2015-02-03 | Electric power meter field-checking loads device with three-phase simulation |
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| CN104614698A true CN104614698A (en) | 2015-05-13 |
| CN104614698B CN104614698B (en) | 2017-12-29 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108196216A (en) * | 2016-11-20 | 2018-06-22 | 国网江西省电力公司赣东北供电分公司 | A kind of electric energy meter verifies three-phase voltage attachment device |
| CN110596474A (en) * | 2019-09-10 | 2019-12-20 | 河南华盛隆源电气有限公司 | Unbalanced three-phase automatic regulating apparatus test circuit and test system |
| CN113466777A (en) * | 2021-06-06 | 2021-10-01 | 国网河北省电力有限公司辛集市供电分公司 | Intelligent electric energy meter error rapid determination device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120101760A1 (en) * | 2010-10-26 | 2012-04-26 | Praveen Sutrave | Method of Enabling Calibration of a Current Transformer, and Associated Apparatus |
| CN202649459U (en) * | 2012-05-28 | 2013-01-02 | 新安县电业公司 | Temporary load device for electric energy metering device field calibration |
| EP2555425A2 (en) * | 2011-08-04 | 2013-02-06 | Tektronix, Inc. | Means of providing variable reactive load capability on an electronic load |
| CN103777172A (en) * | 2013-12-27 | 2014-05-07 | 珠海中慧微电子有限公司 | Reliability testing system of intelligent electric meter and method thereof |
| CN204374405U (en) * | 2015-02-03 | 2015-06-03 | 国家电网公司 | Electric power meter field-checking three-phase simulation load device |
-
2015
- 2015-02-03 CN CN201510055022.2A patent/CN104614698B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120101760A1 (en) * | 2010-10-26 | 2012-04-26 | Praveen Sutrave | Method of Enabling Calibration of a Current Transformer, and Associated Apparatus |
| EP2555425A2 (en) * | 2011-08-04 | 2013-02-06 | Tektronix, Inc. | Means of providing variable reactive load capability on an electronic load |
| CN202649459U (en) * | 2012-05-28 | 2013-01-02 | 新安县电业公司 | Temporary load device for electric energy metering device field calibration |
| CN103777172A (en) * | 2013-12-27 | 2014-05-07 | 珠海中慧微电子有限公司 | Reliability testing system of intelligent electric meter and method thereof |
| CN204374405U (en) * | 2015-02-03 | 2015-06-03 | 国家电网公司 | Electric power meter field-checking three-phase simulation load device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108196216A (en) * | 2016-11-20 | 2018-06-22 | 国网江西省电力公司赣东北供电分公司 | A kind of electric energy meter verifies three-phase voltage attachment device |
| CN110596474A (en) * | 2019-09-10 | 2019-12-20 | 河南华盛隆源电气有限公司 | Unbalanced three-phase automatic regulating apparatus test circuit and test system |
| CN113466777A (en) * | 2021-06-06 | 2021-10-01 | 国网河北省电力有限公司辛集市供电分公司 | Intelligent electric energy meter error rapid determination device |
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Inventor after: Li Weisheng Inventor after: Sun Hailong Inventor after: Li Yaorong Inventor after: Huang Wenbo Inventor after: Zhang Ti Inventor after: Li Dapeng Inventor after: Zhang Shangang Inventor after: Ma Qian Inventor after: Han Xiaodong Inventor after: Wang Xiantai Inventor after: Xu Guangyu Inventor before: Huang Wenbo Inventor before: Li Yaorong Inventor before: Zhang Ti Inventor before: Li Dapeng Inventor before: Zhang Shangang Inventor before: Ma Qian Inventor before: Han Xiaodong Inventor before: Wang Xiantai Inventor before: Xu Guangyu Inventor before: Sun Hailong |
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