CN103941218B - New clothes electric energy meter scene Universal load tester - Google Patents

New clothes electric energy meter scene Universal load tester Download PDF

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Publication number
CN103941218B
CN103941218B CN201410211923.1A CN201410211923A CN103941218B CN 103941218 B CN103941218 B CN 103941218B CN 201410211923 A CN201410211923 A CN 201410211923A CN 103941218 B CN103941218 B CN 103941218B
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China
Prior art keywords
casing
electric energy
energy meter
contactor
phase
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CN201410211923.1A
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Chinese (zh)
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CN103941218A (en
Inventor
杨文博
冯玉花
陈兴莲
张恒华
张斌
焦诗育
陈继开
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莱芜鲁能开源集团电器有限公司
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Priority to CN201410211923.1A priority Critical patent/CN103941218B/en
Priority claimed from CN201610339519.1A external-priority patent/CN105785314B/en
Publication of CN103941218A publication Critical patent/CN103941218A/en
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Publication of CN103941218B publication Critical patent/CN103941218B/en

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Abstract

The invention discloses new clothes electric energy meter scene Universal load tester, including casing, chamber door and roller, it is characterized in that: in described casing, be provided with digital display meter, current transformer, A.C. contactor, thermal resistor, motor and fan, it is provided with operation on case top and starts gear button, different field load is provided by thermal resistor, motor and fan, start, by running, the gear selection that gear button is different, the transformer low voltage power distribution equipment of different capabilities can be tested.This new clothes electric energy meter field load tester, can be on new on Electricity customers power distribution equipment, after power transmission has checked and accepted formality, the energy measurement instruments reactive power compensator of power distribution equipment is carried out field load test, by in power transmission on-the-spot test, can effectively ensure that electric energy metrical, reactive power compensator are properly functioning, reduce the workload of gauge check personnel, improve the economic benefit of enterprise.

Description

New clothes electric energy meter scene Universal load tester

Technical field

The present invention relates to Electric Energy Metering Technology field, specifically a kind of new clothes electric energy meter scene Universal load is surveyed Examination instrument.It is mainly used in newly going up on Electricity customers power distribution equipment, after power transmission has checked and accepted formality, according to user transformers capacity Electric energy meter, reactive compensation controlling device are carried out field load test, it is ensured that electric energy meter, reactive compensation controlling device Properly functioning.

Background technology

For the Electricity customers on new, at the scene installation power distribution equipment, check and accept after, need the electric energy meter after power transmission Scale, reactive compensation controlling device carry out verifying whether to run well.Owing to most of users are after completing power transmission program, do not have Concrete load running, causes scene cannot verify electric energy meter, reactive compensation controlling device.So it is necessary to etc. Again verify to scene after putting into production to user, reduce operating efficiency.

By retrieval, in order to reach the purpose of Site Detection, have is added in load in the casing of electric energy meter, But it is the most correct to detect wiring;Also the electric capacity in parallel that uses having accesses three phase mains circuit and electric energy as live load The binding post of gauge table tail, " electric energy meter field-checking live load as disclosed in Chinese patent CN202649459U Device ", with three groups of electric capacity in parallel as live load, it is respectively connected to three-phase power line, three phase mains by load fling-cut switch Line accesses the transformer of user's electric energy meter, and voltmeter is accessed in one end that three-phase power line is connected with user transformers low-pressure side And indicator lamp, this " electric energy meter temporary loader for site verification ", also will be with electric energy meter field-checking during use Instrument with the use of, and it is the most correct to detect user's electric energy meter wiring.Have not yet to see Electricity customers on new to join On electric installation, after power transmission has checked and accepted formality, user's electric energy meter wiring can not only be detected the most correct, and can be right The electric energy meter of power distribution equipment, reactive compensation controlling device carry out the report of field load test device.

Summary of the invention

It is an object of the invention to provide one on new on Electricity customers power distribution equipment, when power transmission has checked and accepted formality After, user's electric energy meter wiring can not only be detected whether correct, and to the electric energy meter of power distribution equipment, reactive-load compensation control Device processed also can carry out the new clothes electric energy meter scene Universal load tester of field load test.

In order to reach object above, the technical solution adopted in the present invention is: this new clothes electric energy meter is on-the-spot general negative Carrying tester, including casing, chamber door and roller, chamber door is rotationally connected with the frame of casing, and roller is located at the bottom of casing, and it is special Levy and be: being provided with PA/PV digital display meter inside the epicoele of described casing, the display screen of PA/PV digital display meter is before the epicoele of casing Wallboard square opening stretches out;The casing epicoele front panel of the side of PA/PV digital display meter is sequentially provided with four run indicator;Described The rear wall middle and upper part of box cavity three current transformers, four A.C. contactors, connecting terminal blocks are installed successively and conflux Zero-emission, zero-emission of confluxing is stretched out from the rear wall of casing, is provided with QF1 automatic control switch in the side of connecting terminal block, and QF1 is controlled automatically System switch stretches out from the rear wall of casing, and one end of three current transformers is defeated with the A phase current of PA/PV digital display meter outgoing line side respectively Enter end, B phase current input, C phase current input are connected, and three current transformer other end parallel connections are followed by PA/PV digital display The IC pin of table simultaneously connecing is arranged with confluxing, and arranges the rear wall from casing with confluxing stretches out;Four described A.C. contactors, each Three input wires of A.C. contactor access three respectively and are connected cable L1, L2, L3, wherein first three A.C. contactor Output be connected with 1,3,5,7,9,11,13,15,17 interfaces of connecting terminal block 11 successively, a rear A.C. contactor Output be connected with micro ac motor by electrothermal relay;The roof of casing is provided with four and runs startup gear choosing Select button and four operation stop buttons, run the selections starting gear select buttons by four, it is achieved corresponding new above electricity consumption The transformer capacity that client's power distribution equipment is used;It is in four A.C. contactors that described four operations start gear select button The 1KM 4KM of control action, is concurrently accessed electrothermal relay on the circuit of 4KM;Described micro ac motor is pacified by support On the left of the middle and lower part being contained in casing, the axle head at micro ac motor is provided with fan, the shutter of fan alignment box body sidewall Formula ventilating opening;On the right side of the described middle and lower part in casing fixedly mount thermal resistor, the input of thermal resistor successively with wiring The 1 of terminal block 11,3,5,7,9,11,13,15,17 interfaces connect, and its output termination is confluxed zero-emission, and zero-emission of confluxing accesses four again Run and start gear select button, i.e. 1KM 4KM, so, by micro ac motor and the acting of fan and thermal resistor Energy consumption provide field load;Four described operations start gear select button and four input strings running stop button Access L1 phase by QF1 automatic control switch again after connection and N connects cable.

The present invention implements also by following measure: described thermal resistor is added thermal resistance 1R 9R by nine and forms, nine Add thermal resistance and be divided into three groups, often group three, accessed by connecting terminal block and A.C. contactor respectively and connect cable L1, L2, L3, For thermal resistor for electrical heating;Described thermal resistor and micro ac motor are controlled by four A.C. contactors respectively.

Four operation startup gear select buttons of described A.C. contactor control action, i.e. with heat while of 1KM 4KM The output of resistor connects.

Described PA/PV digital display meter, current transformer, A.C. contactor, connecting terminal block, zero-emission of confluxing, QF1 are automatic Control switch, arrange with confluxing, electrothermal relay, thermal resistor are existing accessory, directly can buy from market.

The beneficial effects of the present invention is: this new clothes electric energy meter field load tester, can on new Electricity customers On power distribution equipment, after power transmission has checked and accepted formality, electric energy meter, the reactive compensation controlling device of power distribution equipment is carried out existing Field load testing, by power transmission on-the-spot test, can effectively ensure that electric energy metrical, reactive compensation controlling device are properly functioning, Reduce the workload of gauge check personnel, improve the economic benefit of enterprise.

Accompanying drawing explanation

Fig. 1 is the casing built-in distribution structure front-view schematic diagram of the present invention.

Fig. 2 is the casing top structure schematic top plan view of the present invention.

Fig. 3 is the circuit theory schematic diagram of the present invention.

In figure: 1, casing;2, chamber door;3, roller;4, PA/PV digital display meter;5, run indicator;6, support;7, miniature friendship Stream motor;8, fan;9, current transformer;10, A.C. contactor;11, connecting terminal block;12, conflux zero-emission;13, thermal resistance Device;14, electrothermal relay;15, startup gear select button is run;16, QF1 automatic control switch;17, stop button is run;18、 Arrange with confluxing.

Detailed description of the invention

The present invention is made with reference to Fig. 1, Fig. 2, Fig. 3.This new clothes electric energy meter scene Universal load tester, including casing 1, chamber door 2 and roller 3, chamber door 2 is rotationally connected with the frame of casing 1, and roller 3 is located at the bottom of casing 1, it is characterised in that: institute Being provided with PA/PV digital display meter 4 inside the epicoele of the casing 1 stated, the display screen of PA/PV digital display meter 4 is from the epicoele front panel side of casing 1 Mouth stretches out, and so can directly observe the display data of PA/PV digital display meter 4;Casing 1 epicoele in the side of PA/PV digital display meter 4 Four run indicator 5 it are sequentially provided with in front panel, can corresponding different transformer capacity field load test display;Described Rear wall middle and upper part in casing 1 chamber installs 9, four A.C. contactors 10 of three current transformers, connecting terminal block 11 and successively Confluxing zero-emission 12, zero-emission 12 of confluxing is stretched out from the rear wall of casing 1, is provided with QF1 in the side of connecting terminal block 11 and automatically controls out Close 16, QF1 automatic control switch 16 stretches out from the rear wall of casing 1, one end of three current transformers 9 respectively with PA/PV digital display The A phase current input of table 4 outgoing line side, B phase current input, C phase current input are connected, and three current transformers 9 are another One end parallel connection is followed by the IC pin of PA/PV digital display meter 4 and connects simultaneously and arrange 18 with confluxing, and arranges 18 with confluxing stretches out from the rear wall of casing 1; Four described A.C. contactors 10, three input wires of each A.C. contactor 10 access three respectively and are connected electricity Cable L1, L2, L3, wherein the output of first three A.C. contactor 10 successively with the 1 of connecting terminal block 11,3,5,7,9,11,13, 15,17 interfaces are connected, and the output of a rear A.C. contactor 10 is connected with micro ac motor 7 by electrothermal relay 14 Connect, provide power supply for micro ac motor 7;The roof of casing 1 is provided with four and runs startup gear select button 15 and four Individual operation stop button 17, runs the selection starting gear select button 15 by four, it is achieved corresponding new upper Electricity customers is joined The transformer capacity that electric installation is used;It is to control in four A.C. contactors 10 that described four operations start gear select button 15 The 1KM 4KM that braking is made, is concurrently accessed electrothermal relay 14 on the circuit of 4KM;Described micro ac motor 7 is by support 6 Being arranged on the left of the middle and lower part in casing 1, the axle head at micro ac motor 7 is provided with fan 8, and fan 8 is directed at casing 1 sidewall Louver-type ventilation mouth, dispels the heat in can making casing 1 by fan 8;Thermoelectricity is fixedly mounted on the right side of the described middle and lower part in casing 1 Resistance device 13, the input of thermal resistor 13 is connected with 1,3,5,7,9,11,13,15,17 interfaces of connecting terminal block 11 successively, its Output termination is confluxed zero-emission 12, and zero-emission 12 of confluxing accesses four again and runs and start gear select buttons 15, i.e. 1KM 4KM, this Sample, provides field load by the energy consumption of micro ac motor 7 and the acting of fan 8 and thermal resistor 13;Described four Run and pass through QF1 automatic control switch again after starting gear select button 15 and four input series connection running stop button 17 16 access L1 phase and N connection cable.

Improvement as the present invention: described thermal resistor 13 is added thermal resistance 1R 9R by nine and forms, and nine add thermoelectricity Resistance is divided into three groups, often group three, is accessed by connecting terminal block 11 and A.C. contactor 10 respectively and connects cable L1, L2, L3, for Thermal resistor 13 is for electrical heating;Described thermal resistor 13 and micro ac motor 7 are controlled by four A.C. contactors 10 respectively.

Four operations of described A.C. contactor 10 control action start gear select button 15, i.e. 1KM 4KM is simultaneously It is connected with the output of thermal resistor 13.

Described PA/PV digital display meter 4, current transformer 9, A.C. contactor 10, connecting terminal block 11, zero-emission 12 of confluxing, QF1 automatic control switch 16, arranges 18, electrothermal relay 14, thermal resistor 13 are existing accessory with confluxing, and directly can purchase from market Buy.

When using the present invention, follow the steps below:

1, check that the case of user becomes and (include high-pressure side, transformer, distribution low-voltage outlet device, electric energy meter and idle Compensate and control device) installed after, the present invention is positioned over new user kit and becomes near distribution low-voltage outlet device, with three Four line connection cable L1, L2, L3, N and distribution low-voltage outlet device breaker use a cable to be connected mutually, inlet wire side wire and User's low-voltage outlet device breaker connects, and outgoing line side is by the binding post on electricity consumption loading tester and four ac contactors Device 10 connects, and controls four A.C. contactors 10 with QF1 automatic control switch 16;Additionally use an earth connection electricity consumption to be born The binding post carried on tester carries out good ground connection.

2, after all cables have connected, according to user's power distribution equipment transformer capacity, according to 100KVA, 200KVA, Six gears of 315KVA, 400KVA, 500KVA, 630KVA control, the present invention end of incoming cables electricity consumption load testing is set Instrument, shows the electrical parameters such as load current, voltage, power.After closing total power switch, the on-the-spot transformer capacity of verification, then select Select gear, test.

3, start gear according to four operations of Capacity Selection A.C. contactor 10 control action of user transformers to select Button 15, i.e. the gear of 1KM 4KM: six kinds of situations can be divided, when the capacity of transformer is 100KVA, select A.C. contactor 1KM in 10 controls gear, i.e. presses and runs first started in gear select button 15, now, only controls to add thermal resistance First group of 1R 3R resistance heating of device 13, every phase one adds thermal resistance, completes load operation;When the capacity of transformer is During 200KVA, select the 2KM in A.C. contactor 10 to control gear, i.e. press and run second started in gear select button 15 Individual, the most only control to add second group of 4R 6R resistance heating of thermal resistor 13, every phase one adds thermal resistance, completes load fortune Turn;When transformer capacity is 315KVA, selects the 3KM in A.C. contactor 10 to control gear, i.e. press operation and start gear In select button 15 the 3rd, the most only controls the 3rd group of 7R 9R resistance heating adding in thermal resistor 13, every phase one Add thermal resistance, complete load operation;When transformer capacity is 400KVA, 1KM, the 2KM in A.C. contactor 10 is selected to control Gear, presses the most simultaneously and runs first and second started in gear select button 15, now controls to add thermal resistor 13 In first group and the heating of second group of 1R 6R resistance, every mutually two add thermal resistance, complete load operation;When transformer capacity is During 500KVA, select 2KM, the 3KM in A.C. contactor 10 to control gear, press operation the most simultaneously and start gear select button 15 In second and the 3rd, the most only control to add second group in thermal resistor 13 and the heating of the 3rd group of 4R 9R resistance, often Two add thermal resistance mutually, complete load operation;When transformer capacity is 630KVA, select the 1KM in A.C. contactor 10, 2KM, 3KM control gear, press the most simultaneously and run first, second and the 3rd started in gear select button 15, this Time all control to add three groups of 1R 9R resistance heating in thermal resistor 13, every mutually three add thermal resistance, complete maximum load fortune Turn;

4, when load operation, the load electrical parameter run, reach PA/PV instrument 4 by three current transformers 9 Display, shows every phase voltage, electric current, apparent energy, effective power factor, reactance capacity and frequency, by showing data above With the Data Comparison on onsite user's electric energy meter, its data are close or consistent, it can be determined that field electric energy measurement table wiring Correctly, after determining that field electric energy measurement table wiring is correct, the reactive factor that can be shown by electric energy meter, with idle benefit The data repaying control device compare, it is determined that the correctness of reactive compensation controlling device display power factor;When needs low value During reactive factor, by controlling the 4KM gear in A.C. contactor 10, i.e. press operation and start in gear select button 15 The 4th, i.e. start micro ac motor 7 and fan 8 and operate, obtain the reactive power value needed, true according to reactive compensation values Surely need whether reactive compensation controlling device runs, it is also possible to judge the wiring correctness of reactive compensation controlling device and device Accuracy;When rotating according to each control part startup thermal resistor 13 and micro ac motor 7 and fan 8, user will be driven Electric energy meter, reactive compensation controlling device operating on power distribution equipment, it is possible to carried out by the data with PA/PV digital display meter 4 Comparison, by starting micro ac motor 7 and fan 8, can record the reactive factor of load, and can determine whether the idle benefit of user Repay the ruuning situation controlling device, thus reach the test purpose that whether properly functioning the electric energy meter to power distribution equipment is, The most just the electric energy meter of multiple transformer gear, the properly functioning use of reactive compensation controlling device can be achieved.

5, then according to Utility companies demand, the startup power factor of reactive compensation controlling device controller is set (generally 0.9);The automatic controller of reactive compensation controlling device is arranged on automated location, and reactive compensation controlling device is by root Automatic cycle switching is carried out according to supply load power factor.Through the present invention PA/PV digital display meter 4 and user's electric energy meter, The comparing of reactive compensation controlling device, when electric energy meter display numerical value is mutually close with the display parameters of PA/PV digital display meter 4 Or time consistent, illustrate that electric energy meter wiring is accurate;When electric energy meter display reactive factor numerical value and idle benefit Repay device controller display power factor close with the display parameters of PA/PV digital display meter 4 or consistent time, illustrate that reactive-load compensation fills Put controller qualified;According to starting micro ac motor 7 and the reactive factor of fan 8 display, and Utility companies demand one As power the factor is lead to consumer's meritorous service value be not less than 0.9 requirement, observe reactive compensation controlling device action situation, if idle benefit Repaying control device regular event, after reactive compensation controlling device puts into, reactive compensation controlling device shows higher than 0.9 or is negative During the power factor being worth, illustrate that reactive compensation controlling device wiring is accurate.When user's electric energy meter shows " reverse merit Rate " time, illustrate that electrical network phase sequence is contrary with user's electric energy meter wiring phase sequence, this take following several method process: 1, change the wiring of user's electric energy meter, typically the wiring of A phase with C phase is swapped;2, from step down side by A phase Wiring with C phase swaps;3, from high pressure inlet wire side cable, the wiring of A phase with C phase is swapped;When starting load is miniature After alternating current generator 7 and fan 8, the display parameters of user's reactive compensation controlling device display power factor and PA/PV digital display meter 4, When user's electric energy meter display data are inconsistent, illustrate that wiring is wrong;Needs carry out the on-the-spot line inspection: 1, check secondary singal line Access the most correct, if according to controller requirement access signal;2, check that whether the voltage signal line of controller is by wanting Ask access;3, the uniformity of a wire and signal transformer is checked.When startup electric loading micro ac motor 7 and fan 8 After, user's reactive compensation controlling device display power factor and electricity consumption load P A/PV digital display meter 4, electric energy meter display data Unanimously, but when not up to Utility companies demand power factor, reactive compensation controlling device should carry out switching do action.As Really akinesia, illustrates to exist fault, needs to carry out the on-the-spot line inspection: be first according to above three step and check, then examine Looking into secondary protective element, as protection fusible core of fuse is unkitted or fuses, whether protection air switch is closing position.According to checking result Correct.

Embodiment 1

On December 1st, 2013, the phase transformation of Laiwu City nine Jia Jingujianchang (includes high-pressure side, transformer, distribution low-pressure line-outgoing Device, electric energy meter and reactive compensation controlling device) it is respectively mounted complete, transformer capacity is 100KVA, the present invention is placed Become near distribution low-voltage outlet device in case, with three-phase and four-line connection cable L1, L2, L3, N and distribution low-voltage outlet device open circuit Device uses cable to connect, and inlet wire side wire is connected with user's low-voltage outlet device breaker, and outgoing line side is by by electric loading Binding post and four A.C. contactors 10 on tester connect, and control four exchanges with QF1 automatic control switch 16 and connect Tentaculum 10.Additionally use an earth connection and the binding post on electricity consumption loading tester is carried out good ground connection.All cables Connecting cable L1, L2, L3, N with three-phase and four-line after having connected uses a cable to be connected with this factory's low-pressure line-outgoing breaker, enters Line side wire is connected with user's power distribution equipment, and outgoing line side and four A.C. contactors 10 connect, with QF1 automatic control switch 16 Control four A.C. contactors 10.After all cables have connected, press and select the 1KM in A.C. contactor 10 to control gear, I.e. press and run first started in gear select button 15, now, only control to add first group of 1-3R electricity of thermal resistor 13 Resistance heating, every phase one adds thermal resistance, completes load operation.Now, electricity consumption load P A/PV digital display meter 4 digital display meter shows:

Three-phase firewire voltage U value: 1,235.3 V;2、 232.9 V;3、 233.4 V

Average voltage U value (Avg): 233.8

Three-phase firewire electric current I value: 1,4.24 A;2 、 4.29 A;3、 4.28 A

Average current I value (Avg): 4.27

Frequency (FPEO): 50.00 Hz

Three-phase activity coefficient (COS): 1,1.00;2、1.00 ;3、1.00

Average power factor (Avg): 1.00

Three phase power (P): 1,0.99 KW;2、 0.99 KW;3、 0.99 KW

Mean power (Avg): 0.99

User's electric energy meter shows data:

Three-phase voltage U value: A, 235.3 V;Viewing area code: 02.01.01.00

B 、 232.9 V;Viewing area code: 02.01.02.00

C 、 233.4 V;Viewing area code: 02.01.03.00

Three-phase current I value: A, 4.24 A;Viewing area code: 02.02.01.00

B、 4.29 A ;Viewing area code: 02.02.02.00

B、 4.29 A ;Viewing area code: 02.02.02.00

C、 4.28 A;Viewing area code: 02.02.03.00

Forward active power:

Meritorious general power: 2.97KW;Code: 02.03.00.00

Three phases active power: A, 0.99 KW;Code: 02.03.01.00

B、0.99 KW ;Code: 02.03.02.00

Active power: C, 0.99 KW;Code: 02.03.03.00

Total power factor (COS φ): 1.000 codes: 02.06.00.00

Three-phase total power factor (COS φ): A, 1.000;Code: 02.06.01.00

B, 1.000 codes: 02.06.02.00

C, 1.000 codes: 02.06.03.00

User's reactive compensation controlling device shows total power factor (COS φ): 1.00

Data Comparison is shown by electricity consumption loading tester and user's electric energy meter, close or equal, determine electric energy meter Scale wiring is correct.

Restart the micromachine (its rated power factor 0.86) on electricity consumption loading tester, electricity consumption loading tester number Aobvious table shows:

Three-phase total power factor (COS φ): 1,0.85;2、 0.85;3、 0.85

Data are shown on electric energy meter:

Total power factor (COS φ): 0.856;Code: 02.06.00.00

Three-phase total power factor (COS φ): A, 0.856;Code: 02.06.01.00

B、0.849 02.06.02.00

C、0.857 02.06.03.00

Total power factor (COS φ) is shown: 0.85 on reactive compensation controlling device

Then according to Utility companies demand, the startup power factor of reactive compensation controlling device controller is set (one As be 0.9);The automatic controller of reactive compensation controlling device is arranged on automated location, and reactive compensation controlling device is by basis Supply load power factor carries out automatic cycle switching.Through comparing, user's electric energy meter display numerical value and above ginseng When number is same or like, determine that electric energy meter wiring is accurate;Electric energy meter display reactive factor numerical value and nothing The controller display power factor of Reactive power compensation installations is same or like with above parameter, determines that reactive compensator controller is closed Lattice;According to start motor reactive factor, and Utility companies demand typically power the factor is lead to consumer's meritorous service value be not less than 0.9 want Asking, observe the action situation of reactive compensation controlling device, reactive compensation controlling device is operating normally, at reactive compensation controlling device After input, reactive compensation controlling device display data higher than 0.9 or are the power factor of negative value, determine reactive compensation controlling device Wiring is accurate.

Embodiment 2

On December 25th, 2013, the transformer of Laiwu City Fragrance Hill melon seeds factory, power distribution equipment, electric energy meter, reactive-load compensation Controlling device and be respectively mounted complete, transformer capacity is 200KVA, the present invention is positioned near new user's power distribution equipment, and wiring is same Embodiment 1.

All cables have connected, and press and run second started in gear select button 15, the most only control heating Second group of 4-6R resistance heating of resistor 13, every phase one adds thermal resistance, completes load operation;Electricity consumption loading tester digital display Show on table:

Three-phase voltage U value: 1,235.3 V;2、232.9 V;3、233.4 V

Average voltage U value (Avg): 233.8

Three-phase current I value: 1,8.43 A;2、8.44 A ;3、8.45 A

Three-phase average current I value (Avg): 8.44

Frequency (FPEO): 50.00 Hz

Three-phase activity coefficient (COS): 1,1.00;2、1.00;3、 1.00

Average power factor (Avg): 1.00

Three phase power (P): 1,2.00 KW;2、1.99 KW;3、2.06 KW

Three-phase mean power (Avg): 2.01

Data are shown on electric energy meter:

Three-phase voltage U value: A, 235.3 V code: 02.01.01.00

B, 232.9 V code: 02.01.02.00

C, 233.4 V code: 02.01.03.00

Three-phase current I value: A, 8.43 A code: 02.02.01.00

B, 8.44 A code: 02.02.02.00

C, 8.45 A code: 02.02.03.00

Forward active power:

Meritorious general power: 6.071KW;Code: 02.03.00.00

Three phases active power: A, 2.134 KW code: 02.03.01.00

B, 1.965 KW code: 02.03.02.00

C, 1.972 KW code: 02.03.03.00

Total power factor (COS φ): 1.000 codes: 02.06.00.00

Three-phase total power factor (COS φ): A, 1.000 codes: 02.06.01.00

B, 1.000 codes: 02.06.02.00

C, 1.000 codes: 02.06.03.00

Total power factor (COS φ) is shown: 1.00 on reactive compensation controlling device

By Data Comparison, display data are close or consistent, determine that electric energy meter wiring is correct.

Starting micromachine (its rated power factor 0.86) on tester, tester digital display meter shows:

Three-phase total power factor (COS φ): 1,0.85;2、0.85;3、0.85

Data are shown on electric energy meter:

Total power factor (COS φ): 0.856 code: 02.06.00.00

Three-phase total power factor (COS φ): A, 0.856 code: 02.06.01.00

B, 0.849 code: 02.06.02.00

C, 0.857 code: 02.06.03.00

Total power factor (COS φ) is shown: 0.85 on reactive compensation controlling device

Automatic cycle switching is with embodiment 1.

By data above comparison, comparison method is with embodiment 1.By comparison, its data are close or consistent, determine metering Table measurent wiring is accurate, reactive compensation controlling device controller is qualified, reactive power compensator wiring is accurate.

Embodiment 3

On January 25th, 2014, new Shanghai is contained geotechnique's factory 400KVA transformer low voltage power distribution equipment and tests.Wiring is same Embodiment 1.

Press simultaneously and run first and second started in gear select button 15, now control to add thermal resistor 13 In first group and the heating of second group of 1R 6R resistance, every mutually two add thermal resistance, complete load operation;Start 1R 6R, often The resistance of phase resistance is 3KW, equally will be at electricity consumption loading tester digital display meter, user's electric energy meter, user's reactive-load compensation dress The display data put contrast one by one, and its data are close or consistent, determine that gauge table measurent wiring is accurate, reactive-load compensation dress Put that controller is qualified, reactive power compensator wiring is accurate.

Claims (3)

1. new clothes electric energy meter scene Universal load tester, including casing (1), chamber door (2) and roller (3), chamber door (2) with The frame of casing (1) is rotationally connected, and roller (3) is located at the bottom of casing (1), it is characterised in that: the epicoele of described casing (1) Inside is provided with PA/PV digital display meter (4), and the display screen of PA/PV digital display meter (4) stretches out from the epicoele front panel square opening of casing (1);? Four run indicator (5) it are sequentially provided with in casing (1) the epicoele front panel of the side of PA/PV digital display meter (4);Described casing (1) the rear wall middle and upper part in chamber installs three current transformers (9), four A.C. contactors (10), connecting terminal blocks successively And zero-emission of confluxing (12) (11), being provided with QF1 automatic control switch (16) in the side of connecting terminal block (11), QF1 automatically controls Switch (16) stretches out from the rear wall of casing (1), and zero-emission of confluxing (12) is stretched out from the rear wall of casing (1), three current transformers (9) One end respectively with the A phase current input of PA/PV digital display meter (4) outgoing line side, B phase current input, C phase current input phase Connecting, the other end parallel connection of three current transformers (9) is followed by the IC pin of PA/PV digital display meter (4) simultaneously connecing and arranges (18) with confluxing, Arrange (18) with confluxing stretch out from the rear wall of casing (1);Four described A.C. contactors (10), each A.C. contactor (10) Three input wires access three respectively and be connected cable L1, L2, L3, the wherein output of first three A.C. contactor (10) End is connected with 1,3,5,7,9,11,13,15,17 interfaces of connecting terminal block (11) successively, a rear A.C. contactor (10) Output be connected with micro ac motor (7) by electrothermal relay (14);The roof of casing (1) is provided with four operations Starting gear select button (15) and four operations stop button (17), four are run startup gear select button (15) is four The 1KM 4KM of control action in A.C. contactor (10), is concurrently accessed electrothermal relay (14) on the circuit of 4KM;Described is micro- Type alternating current generator (7) is arranged on the left of the middle and lower part in casing (1) by support (6), and the axle head at micro ac motor (7) sets There are fan (8), the louver-type ventilation mouth of fan (8) alignment casing (1) sidewall;On the right side of the described middle and lower part in casing (1) Fixed installation thermal resistor (13), the input of thermal resistor (13) successively with the 1 of connecting terminal block (11), 3,5,7,9,11, 13,15,17 interfaces connect, and its output termination is confluxed zero-emission (12), and zero-emission of confluxing (12) accesses four again and runs and start gears choosing Select button (15);Four described operations start gear select button (15) and four output strings running stop button (17) Access L1 phase by QF1 automatic control switch (16) again after connection and N connects cable.
New clothes electric energy meter scene the most according to claim 1 Universal load tester, it is characterised in that: described heat Resistor (13) is added thermal resistance 1R 9R by nine and forms, and nine add thermal resistance and are divided into three groups, and often group three, passes through wiring respectively Terminal block (11) and A.C. contactor (10) access and connect cable L1, L2, L3;Described thermal resistor (13) and micro ac motor (7) controlled by four A.C. contactors (10) respectively.
New clothes electric energy meter scene the most according to claim 1 Universal load tester, it is characterised in that: described friendship Four of stream contactor (10) control action run the while of starting gear select button (15), i.e. 1KM 4KM and thermal resistor (13) output connects.
CN201410211923.1A 2014-05-20 2014-05-20 New clothes electric energy meter scene Universal load tester CN103941218B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0871040A2 (en) * 1997-04-08 1998-10-14 Schlumberger Industries Limited Calibration method for an electronic electricity meter
CN2347182Y (en) * 1998-11-06 1999-11-03 张善武 Watt-hour meter wiring tester
EP1498741A1 (en) * 2003-07-15 2005-01-19 Iskraemeco, Merjenje in Upravljanje Energije, D.D. Watthour meter with integrated self-testing
CN2938136Y (en) * 2006-08-29 2007-08-22 宋国元 Electric energy field detector with virtual loading
CN200979592Y (en) * 2006-12-15 2007-11-21 娄瑞童 An inspection apparatus for single-phase load of electric meter
CN101231333A (en) * 2008-01-11 2008-07-30 莱芜供电公司 Portable metrology charge instrument
CN202126498U (en) * 2011-07-05 2012-01-25 安徽省电力公司马鞍山供电公司 On-site detector for single-phase electric energy meter
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
CN203838333U (en) * 2014-05-20 2014-09-17 莱芜鲁能开源集团电器有限公司 On-site universal load tester for newly installed electric energy meters

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0871040A2 (en) * 1997-04-08 1998-10-14 Schlumberger Industries Limited Calibration method for an electronic electricity meter
CN2347182Y (en) * 1998-11-06 1999-11-03 张善武 Watt-hour meter wiring tester
EP1498741A1 (en) * 2003-07-15 2005-01-19 Iskraemeco, Merjenje in Upravljanje Energije, D.D. Watthour meter with integrated self-testing
CN2938136Y (en) * 2006-08-29 2007-08-22 宋国元 Electric energy field detector with virtual loading
CN200979592Y (en) * 2006-12-15 2007-11-21 娄瑞童 An inspection apparatus for single-phase load of electric meter
CN101231333A (en) * 2008-01-11 2008-07-30 莱芜供电公司 Portable metrology charge instrument
CN202126498U (en) * 2011-07-05 2012-01-25 安徽省电力公司马鞍山供电公司 On-site detector for single-phase electric energy meter
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
CN203838333U (en) * 2014-05-20 2014-09-17 莱芜鲁能开源集团电器有限公司 On-site universal load tester for newly installed electric energy meters

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