CN102680937A - Temporary loader for site verification of electric energy metering device - Google Patents
Temporary loader for site verification of electric energy metering device Download PDFInfo
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- CN102680937A CN102680937A CN2012101681129A CN201210168112A CN102680937A CN 102680937 A CN102680937 A CN 102680937A CN 2012101681129 A CN2012101681129 A CN 2012101681129A CN 201210168112 A CN201210168112 A CN 201210168112A CN 102680937 A CN102680937 A CN 102680937A
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- live load
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- load device
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Abstract
The invention belongs to the technical field of electric energy metering and discloses a temporary loader for site verification of an electric energy metering device. The temporary loader comprises temporary loading devices, voltmeters for displaying no-load voltage on the low voltage side of a transformer and the temporary loading voltage, indication lamps for indicating the temporary loading devices to work and a connection wire for connecting the temporary loader and the low voltage side of the transformer. The temporary loading devices are a plurality of groups of parallel-connection capacitors used for providing primary current, a switch for loading switching is arranged corresponding to each group of capacitors, the two voltmeters are respectively connected between an A phase and a B phase of a three-phase power line and the B phase and a C phase of the three-phase power line in parallel, the two indication lamps are respectively connected with the corresponding voltmeters in parallel, and ends of the connection wire are respectively provided with an insulation wire pincer. The temporary loader performs temporary loading for the electric energy metering device in the condition that the electric energy metering device of an electricity utilization client generates no electricity utilization load, is matched with the existing electric energy meter site verification meter in use, and performs site detection for the connection wire of the electric energy metering device.
Description
Technical field
The invention belongs to the electric energy metrical technical field, mainly propose a kind of electric power meter field-checking and use the live load device.
Background technology
Continuous growth along with social power load; Newly-increased distribution transformer client quantity is also more and more; Electric industry department dress table connects the professional of electricity constantly to be increased; Electric power meter is a steelyard of electric industry department; Its correctness and accuracy are directly connected to the economic benefit that supplies the electricity consumption both sides; The electric energy metrical center is as the management and the executable unit of electric power meter; Will carry out the scene to the new clothes user in routine duties detects; Electric industry department already expands the program of applying to install according to accepting the client at present; To newly-increased client's distribution transforming project installation completion; Check and accept; After signing contract for the supply and use of electricity; Arrange metering field personnel teams and groups; Connect according in ten committed time limits of state net company the client being adorned table; Most of client just founds the factory the initial stage during this, and the project that identifies oneself is injected capital into; Electricity consumption is anxious; Have zero load and do not consider, send electricity to put in place as long as the table meter is installed, just everything is just fine; Stipulate according to " electric energy metrical technical management rules "; The new clothes client must carry out field-checking in one month putting into operation; And part client dress table is when connecing electricity; Nurse life illumination or simple capital construction electricity consumption facility just are used to found the factory; Can't send electricity to be with enough loads at that time at the dress table; Do not possess the field-checking condition, metrological personnel also is difficult to utilize electric energy meter on-site calibrator to judge the correctness of its metering device wiring; Perhaps when transformer station's individual line subscriber being carried out the cycle verification,, cause the electric power meter field-checking in time not carry out, stay hidden danger for the correctness and the accuracy of metering because part transformer station individual line subscriber is under the stopping production situation; Management through quantification unit is often after the dress table connects electricity or transformer station's individual line subscriber ordinary production; Carry out verification once more to the scene after these users are treated formally to put into production; The manpower and materials cost of power supply enterprise is improved; If there is the error connection phenomenon to take place; The electric weight that will certainly cause the metering false wiring moves back benefit, causes unnecessary metering dispute, has restricted the friendship that supplies the electricity consumption both sides; Directly harm supplies electricity consumption both sides' economic interests, influences the social prestige of electric industry department.
Summary of the invention
For solving the problems of the technologies described above; The objective of the invention is to propose a kind of electric power meter field-checking and use the live load device; Make it under the situation of electricity consumption client's electric power meter electric load of no use, carry out interim load to electric power meter; Be used with existing electric energy meter on-site calibrator, the scene carried out in the electric power meter wiring detect.
The present invention adopts following technical scheme for accomplishing above-mentioned purpose:
A kind of electric power meter field-checking is used the live load device, described live load device include live load, in order to show the step down side no-load voltage and detect the voltage table of live load voltage, in order to the pilot lamp of indication live load work and connecting line in order to the live load device is connected with step down side; Described live load is in order to providing the capacitor of primary current, and described capacitor be many groups of parallel connection setting, and every group capacitor and three-phase power line are Y-connection; The group number of said capacitor and the capacity of every group capacitor are confirmed to be provided with according to the size of the required live load that provides; The switch of load switching is carried out in corresponding every group capacitor setting; Described voltage table is two, the AB phase, BC that described two voltage tables are connected in parallel on three-phase power line respectively mutually between, described pilot lamp be two of corresponding setting with described voltage table, each described pilot lamp is parallelly connected with pairing voltage table respectively; The termination of said connecting line has the insulation pliers that is connected with the step down side three-phase power line in order to said live load device.
The three-phase power line of described live load device output is connected with the current transformer of user's electric energy meter, for the current transformer of user's electric energy meter provides primary current.
A kind of electric power meter field-checking that the present invention proposes is used the live load device; Under the situation of electricity consumption client's electric power meter electric load of no use, electric power meter is carried out interim load; Be used with existing electric energy meter on-site calibrator, the scene carried out in the electric power meter wiring detect; Guaranteed that the user is in put into production safe, reliable, the true(-)running of back WT-MSR; The present invention has easy to carry, light and handy characteristics, and the discharge of capacitor, charging process adopt two voltage table indications, guarantee that the charge and discharge of instrument are reliable.
Description of drawings
Fig. 1 is an electrical schematic diagram of the present invention.
Embodiment
With specific embodiment the present invention is illustrated in conjunction with the accompanying drawings:
As shown in Figure 1; A kind of electric power meter field-checking is used the live load device, described live load device includes live load, when showing the step down side no-load voltage and detecting the live load discharge voltage voltage table, in order to the pilot lamp of indication live load work and connecting line in order to the live load device is connected with step down side; Described live load is three group capacitor C1, C2, the C3 that parallel connection is provided with, and three group capacitors and three-phase power line are Y-connection; The capacity of said every group capacitor is 26KVar; K switch 1, K2, the K3 of load switching carried out in corresponding three group capacitor settings; Described K switch 1, K2, K3 adopt DZ47/63 three circle D type isolating switchs; Described voltage table is two, and voltage table V1 is connected in parallel between the AB phase of three-phase power line, and voltage table V2 is connected in parallel between the BC phase of three-phase power line; Be provided with two pilot lamp L1s, the L2 corresponding with voltage table, pilot lamp L1 is parallelly connected with voltage table V1, and pilot lamp L2 is parallelly connected with voltage table V2; The termination of said connecting line has the insulated wire pincers in order to the live load device is connected with the step down side three-phase power line.
Because of the step down side no-load voltage generally reaches 440V, in order to guarantee the sensitivity and the security of the verification of live load device, the rated voltage of live load device is 460V, and the power of live load device is 78KW.
The casing of described live load device is processed by the 2mm iron sheet, and is fixed with horizontally disposed insulcrete in the upper end of casing; Described capacitor C1, C2, C3, voltage table V1, V2, pilot lamp L1, L2, K switch 1, K2, K3 and connecting line are installed on the insulcrete of casing; On described casing, have in order to make things convenient for the handle of live load device carrying.
Described connecting line is three, but every connecting line comprises multiply insulation annealed copper wire spigot head and insulation pliers; It is yellow, green, red that the color of the insulation pliers of three connecting lines is respectively, and is used to distinguish three-phase phase-sequence being connected with the power lead of corresponding step down side, but that the spigot head is used for pilot wire is easy to connect, and insulation pliers is used for fixing connecting line.
Described live load device and electric energy meter on-site calibrator are used; The three-phase power line of described live load device output is connected with the current transformer of user's electric energy meter; The insulation pliers of matching used on-site calibrator connecting line is connected in the connection terminal of electric energy meter tail, the MT3000D frequency electric tester that electric energy meter on-site calibrator adopts Zheng Zhou SMS Electric Co., Ltd to produce; In live load device when work, produce primary current, measures after Current Transformer induces secondary current through the user, detects user's gauging table voltage by matching used on-site calibrator, and whether detect the metering wiring correct.
The use step is following:
1, the live load device does not clamp yellow, green, red three insulation plierses respectively on the binding post of A phase in transformer 400V side, B phase, C phase before transformer powers up; And left rotation and right rotation confirms to make its contact good; Live load device and transformer case keep safe distance more than 1 meter, must not tilt and rock; The three-phase power line of live load device output is connected with the current transformer of user's electric energy meter, and the insulated wire cramp joint of matching used on-site calibrator connecting line is in the connection terminal of electric energy meter tail;
2, based on detecting required load size; Make the capacitor connection work of required charging through switch; The transformer high-voltage side of closing switch; The charged duration of work of instrument forbids to contact the live load device, and checks voltmeter on the live load device shows whether whether be floating voltage, the indicator lamp of step down side in proper working order, confirms to begin to test verification work after normal;
3, behind the test verification end-of-job; Should break off transformer high-voltage side switch earlier after 5 minutes, whether the voltage table pointer on the inspection live load device makes zero is whether discharge off of capacitor, and whether pilot lamp extinguishes; Treat voltage table pointer make zero (capacitor discharge off); After pilot lamp extinguishes, can take off three insulation plierses, end-of-job.
Provide two and detect the whether correct instantiation of metering wiring:
Instance 1: the verification wiring is correct
Certain user is a massive quantity power supply and measurement, and transformer is 250KVA, and current transformer is 15/5; The live load device closes and is connected on transformer low voltage binding post A, B, C phase behind one group of switch; Energising back display voltage 420V, secondary side A phase, C phase current are 0.39A, on-site calibrator phase place UabIa ﹦>60
0, UabIc ﹦>210
0The mode of connection is correct.
Instance 2: the verification wiring is incorrect
Certain user transformers is 400KVA, and current transformer is 30/5, load box two switches that close; Be connected on step down side A, B, C phase; Energising back display voltage 410V, secondary side A phase, C phase current are respectively 0.22A, and the on-site calibrator phase place is UabIa ﹦>120
0, UabIc ﹦>210
0, promptly A phase current polarity connects instead.
Claims (2)
1. an electric power meter field-checking is used the live load device, it is characterized in that: described live load device include live load, in order to show the step down side no-load voltage and detect the voltage table of live load voltage, in order to the pilot lamp of indication live load work and connecting line in order to the live load device is connected with step down side; Described live load is in order to providing the capacitor of primary current, and described capacitor be many groups of parallel connection setting, and every group capacitor and three-phase power line are Y-connection; The switch of load switching is carried out in corresponding every group capacitor setting; The group number of said capacitor and the capacity of every group capacitor are confirmed to be provided with according to the size of the required live load that provides; Described voltage table is two, the AB phase, BC that described two voltage tables are connected in parallel on three-phase power line respectively mutually between, described pilot lamp be two of corresponding setting with described voltage table, each described pilot lamp is parallelly connected with pairing voltage table respectively; The termination of said connecting line has the insulation pliers that is connected with the step down side three-phase power line in order to the live load device.
2. electric power meter field-checking according to claim 1 is used the live load device; It is characterized in that: the three-phase power line of described live load device output is connected with the current transformer of user's electric energy meter, for the current transformer of user's electric energy meter provides primary current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101681129A CN102680937A (en) | 2012-05-28 | 2012-05-28 | Temporary loader for site verification of electric energy metering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101681129A CN102680937A (en) | 2012-05-28 | 2012-05-28 | Temporary loader for site verification of electric energy metering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102680937A true CN102680937A (en) | 2012-09-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101681129A Pending CN102680937A (en) | 2012-05-28 | 2012-05-28 | Temporary loader for site verification of electric energy metering device |
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| CN (1) | CN102680937A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105785314A (en) * | 2014-05-20 | 2016-07-20 | 莱芜鲁能开源集团电器有限公司 | Load tester for electric-energy meter newly-installed on site |
| CN108107313A (en) * | 2018-01-30 | 2018-06-01 | 国网河南省电力公司平顶山供电公司 | The method that unloaded situation judges connection box of electric energy meter correctness |
| 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 |
| CN110171319A (en) * | 2019-06-03 | 2019-08-27 | 国网四川省电力公司电力科学研究院 | A kind of three-phase standard AC charging pile that can be used for tracing to the source |
Citations (5)
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| CN2214004Y (en) * | 1994-11-28 | 1995-11-29 | 张成义 | Standard equivalent load power measuring checker |
| CN2302524Y (en) * | 1997-06-13 | 1998-12-30 | 陈博星 | Electronic phase-sequence meter |
| CN2347182Y (en) * | 1998-11-06 | 1999-11-03 | 张善武 | Watt-hour meter wiring tester |
| JP2000162299A (en) * | 1998-11-26 | 2000-06-16 | Tohoku Electric Power Co Inc | Connection deciding device for watthour meter |
| CN201311473Y (en) * | 2008-09-02 | 2009-09-16 | 芜湖明远电力设备制造有限公司 | Detection device for judging watt hour meter and ammeter wiring |
-
2012
- 2012-05-28 CN CN2012101681129A patent/CN102680937A/en active Pending
Patent Citations (5)
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|---|---|---|---|---|
| CN2214004Y (en) * | 1994-11-28 | 1995-11-29 | 张成义 | Standard equivalent load power measuring checker |
| CN2302524Y (en) * | 1997-06-13 | 1998-12-30 | 陈博星 | Electronic phase-sequence meter |
| CN2347182Y (en) * | 1998-11-06 | 1999-11-03 | 张善武 | Watt-hour meter wiring tester |
| JP2000162299A (en) * | 1998-11-26 | 2000-06-16 | Tohoku Electric Power Co Inc | Connection deciding device for watthour meter |
| CN201311473Y (en) * | 2008-09-02 | 2009-09-16 | 芜湖明远电力设备制造有限公司 | Detection device for judging watt hour meter and ammeter wiring |
Non-Patent Citations (1)
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| 鹿凯华 等: "用电能表现场校验仪检查接线的原理与分析", 《电测与仪表》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105785314A (en) * | 2014-05-20 | 2016-07-20 | 莱芜鲁能开源集团电器有限公司 | Load tester for electric-energy meter newly-installed on site |
| CN105785314B (en) * | 2014-05-20 | 2018-07-06 | 莱芜鲁能开源集团电器有限公司 | The load tester of live new clothes electric energy meter |
| 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 |
| CN108107313A (en) * | 2018-01-30 | 2018-06-01 | 国网河南省电力公司平顶山供电公司 | The method that unloaded situation judges connection box of electric energy meter correctness |
| CN110171319A (en) * | 2019-06-03 | 2019-08-27 | 国网四川省电力公司电力科学研究院 | A kind of three-phase standard AC charging pile that can be used for tracing to the source |
| CN110171319B (en) * | 2019-06-03 | 2024-02-13 | 国网四川省电力公司电力科学研究院 | Three-phase standard alternating-current charging pile capable of being used for tracing |
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Application publication date: 20120919 |