CN101231333A - Portable metrology charge instrument - Google Patents

Portable metrology charge instrument Download PDF

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Publication number
CN101231333A
CN101231333A CNA200810013748XA CN200810013748A CN101231333A CN 101231333 A CN101231333 A CN 101231333A CN A200810013748X A CNA200810013748X A CN A200810013748XA CN 200810013748 A CN200810013748 A CN 200810013748A CN 101231333 A CN101231333 A CN 101231333A
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CN
China
Prior art keywords
contactor
casing
relay protection
establish
lead
Prior art date
Application number
CNA200810013748XA
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Chinese (zh)
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CN101231333B (en
Inventor
任杰
段伦兴
孟庆玲
刘冉
刘键
Original Assignee
莱芜供电公司
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Priority to CN200810013748XA priority Critical patent/CN101231333B/en
Publication of CN101231333A publication Critical patent/CN101231333A/en
Application granted granted Critical
Publication of CN101231333B publication Critical patent/CN101231333B/en

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Abstract

The invention discloses a portable load meter specific for measurement, comprising a case body (1), a current meter (2), a voltage meter (3), a switching on knob (4), a switching off knob (5) and a temperature controller. The invention is characterized in that an upper current transformer (6) is fixed in the front upper part of the case body (1), an upper relay protection AC contactor (7) and a controlling AC contactor (7') are parallelly fixed in the front lower part of the case body (1), an upper power consumption load (8) is fixed at the back side of the cabinet (1) for simulating user's load, resulting in normal work of an on-site electrical power meter. The portable load meter specific for measurement can perform on-site metering and wire-checking in the case of short of load transmission from the user, so as to ensure accurately metering the user's power consumption, prevent wire checking and connecting for the second time and save cost. The invention further has the advantages of simple structure, convenient and standard operation and remarkably improved labor efficiency; and can be widely used for wiring detection of electrical power meter in power supply enterprises.

Description

Portable metrology charge instrument

Technical field

The present invention relates to the utility appliance of a kind of power supply enterprise verification electric energy meter, a particularly a kind of auxiliary electric energy performance tester detects the portable metrology charge instrument of connection box of electric energy meter and error.

Background technology

Whether the wiring that electric energy meter and mutual inductor detect in power supply enterprise correctly is a numerous and diverse job, normally when the user queries or regularly patrols, the band electric energy meter on-site calibrator is just pinpointed the problems when site inspection is measured, this has often caused certain loss, and the labour cost height is unfavorable for the raising of power supply enterprise's measurement Management Level.Present employed electric energy meter on-site calibrator, form by voltage, current sampling circuit, Programmable Gain Amplifier Circuit, modulus converter A/D, central processing unit or digital signal processor, pulse input circuit, this electric energy meter on-site calibrator structure is little, can be easy to carry, help on-the-spot the detection.During at the scene to electrical energy meter calibration, to be inserted the sample circuit of electric energy meter on-site calibrator by the voltage of school electric energy meter, current signal, by central processing unit or DSP CONTROL, the A/D analog to digital converter is digital signal with analog signal conversion and calculates electric parameter in real time, simultaneously, system receives by the verification of the pulse signal of school electric energy meter realization to electric energy meter by pulsating sampler.Obviously, this electric energy meter on-site calibrator only having under the situation of load, just can be had current signal by the school electric energy meter, could be examined by the school.Therefore, present employed electric energy meter on-site calibrator still has the following disadvantages: the one, and do not have the electric power frequent customer under the situation of power load and can't on-the-spotly detect, have only when the client just can carry out the scene under the situation of electricity consumption and detect, make the on-the-spot restriction that has been subjected to the client that detects; The 2nd, along with power customer increases gradually, already expand in the new clothes client transmission process at electric power, most power customers make the electric-power metering personnel can't utilize electric energy meter on-site calibrator to carry out the inspection of on-the-spot school because of suitable measurement load can not be provided; During in addition because of capacitive loads such as power customer electric welding, smeltings, metrological personnel also is difficult to utilize electric energy meter on-site calibrator to judge the correctness of its measuring apparatus wiring, this repeatedly tests client's measuring apparatus with regard to causing metrological personnel, the human and material resources cost of power supply enterprise is improved, if there is error connection to take place, also can cause electric quantity loss, directly endanger the economic interests of electric power enterprise; The 3rd, in testing process, need and user's coordination, inconvenient operation, also lack of standardization.

Summary of the invention

The object of the present invention is to provide and a kind ofly make that power supply enterprise can independently carry out, standard operation, fast detecting, and can stop to measure mistake, improve disposable electricity metering wiring accuracy, the portable metrology charge instrument of raising labour efficiency of sending.

For reaching above purpose; the technical solution adopted in the present invention is: this portable metrology charge instrument; by casing; reometer; voltage table; switch knob; opening button constitutes; reometer; voltage table; switch knob and opening button are installed on the upper face of casing; it is characterized in that preceding upper lateral part in casing fixing on current transformer; relay protection A.C. contactor and control A.C. contactor on side by side fixing of preceding side lower part in casing; power consumption load on rear side in casing is fixing; the power consumption load is connected with the control A.C. contactor by lead; on the upper face of casing, also establish temperature controller; the relay protection A.C. contactor is connected in series with the control A.C. contactor; the upper end of control A.C. contactor is connected with the lower end of temperature controller with the relay protection A.C. contactor by lead respectively; realize the on-off function of power consumption load by temperature controller; provide the simulation output load by the power consumption load; the duty of temperature controller control power consumption load, thus reach a kind of balancing the load.The present invention also implements by following measure: the preceding side lower part in casing is also established earth leakage protective device and fuse, earth leakage protective device is connected with the upper end of fuse by lead, the lower end of fuse is connected with opening button by lead, and be connected with the relay protection A.C. contactor simultaneously, when the switch closure of earth leakage protective device is served electricity, the upper end of three-phase firewire input relay protection A.C. contactor, wherein a phase firewire is imported fuse simultaneously, and through fuse input relay protection A.C. contactor, the relay protection A.C. contactor is by lead-in wire and branch, switch knob connects, and realizes dividing, switch knob running protection function; On the upper face of casing, also be provided with combined floodgate run signal pilot lamp and separating brake stop signal pilot lamp; Described power consumption load, by seal case, liquid heat medium, the combined heated pipe constitutes, liquid heat medium and combined heated Guan Jun are contained in the seal case, the combined heated pipe is connected with the relay protection A.C. contactor by lead, heating realizes the power consumption load to liquid heat medium by the combined heated pipe, adjustment by temperature controller realizes the power consumption size, needed power consumption payload during with accurate simulation test, establish liquid heat medium in upper end wall one side of seal case and add pipe, opposite side is established safety valve, on a sidewall of seal case, establish liquid level and show glass tube, on the sidewall of the bottom of seal case, establish the bleeder valve of liquid heat medium, temperature probe inserts in the thermometer hole of seal case, and is connected with temperature controller by lead; Described casing is the rectangular parallelepiped housing, establishes junction block on the right side wall of casing, establishes insulcrete at the base portion of junction block, establishes chamber door in the front side of casing, establishes liquid level and show the glass tube view window on the casing left side wall, is provided with roller in the bottom of casing.Use when of the present invention, adopt cable that junction block is connected with client's low pressure leading-out terminal, and the client's that closes low pressure goes out wiretap, electric energy meter field effect instrument is connected on the tested electric energy meter, can carry out the scene detection.Under the situation that no client's load, portable metrology charge instrument also do not start, the imperfect phasor graph that electric energy meter on-site calibrator is tested, electric current I on indicator gauge (A), active power P (W), reactive power Q, phasing degree  ° are blank, and line inspection table as a result also is blank.Along with the startup of portable metrology charge instrument, the standard phasor graph appears in electric energy meter on-site calibrator, and electric current I on indicator gauge (A), active power P, reactive power Q, phasing degree  ° and the line inspection all have accurate data to represent in each hurdle as a result.

Beneficial effect of the present invention is: detect with the electric energy meter field effect instrument of present use and compare, owing to increased and carried load device, so, not reaching load because of various reasons the client send under the electric condition, by provide the simulation load to carry out field-checking for the client, the line inspection, guaranteed that client's electricity consumption accurately measures, stop the generation of error connection, prevent electric quantity loss, solved and already expanded the new family of going up because of the zero load difficult problem that can't look into wiring, avoided secondary to look into wiring, saved enterprise cost, simultaneously, simple in structure, easy to operate standard, can significantly improve operating personnel's efficiency, the wiring that can be widely used in power supply enterprise's metering electric energy meter detects.

Description of drawings

Fig. 1 is a structure front-view schematic diagram of the present invention.

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

Fig. 3 looks synoptic diagram for the right side of the present invention.

Fig. 4 looks synoptic diagram for a left side of the present invention.

Fig. 5 is assembly structure front-view schematic diagram in the casing of the present invention.

Fig. 6 is that the present invention is along the horizontal cross-sectional schematic of power consumption load.

Fig. 7 is circuit theory diagrams of the present invention.

Fig. 8 for the present invention when embodiment 1 uses, the client is zero load, when this portable metrology charge instrument does not start yet, the electric energy meter on-site calibrator display image.

Fig. 9 for the present invention when embodiment 1 uses, after this portable metrology charge instrument starts, the electric energy meter on-site calibrator display image.

Figure 10 for the present invention in embodiment 2 uses, the client is zero load, when this portable metrology charge instrument does not start yet, the electric energy meter on-site calibrator display image.

Figure 11 for the present invention in embodiment 2 uses, after this portable metrology charge instrument starts, the electric energy meter on-site calibrator display image.

Embodiment

Make the present invention with reference to accompanying drawing 1,2,3,4,5,6,7.This portable metrology charge instrument; by casing 1; reometer 2; voltage table 3; switch knob 4; opening button 5 constitutes; reometer 2; voltage table 3; switch knob 4 and opening button 5 are installed on the upper face of casing 1; tool be characterised in that the preceding upper lateral part in casing 1 fixing on current transformer 6; relay protection A.C. contactor 7 and control A.C. contactor 7 on side by side fixing of preceding side lower part in casing 1 '; power consumption load 8 on rear side in casing 1 is fixing; power consumption load 8 is by lead and control A.C. contactor 7 ' be connected; on the upper face of casing 1, also establish temperature controller 9; relay protection A.C. contactor 7 and control A.C. contactor 7 ' be connected in series, control A.C. contactor 7 ' the upper end be connected with the lower end of temperature controller 9 by lead respectively with relay protection A.C. contactor 7.The present invention also implements by following measure: the preceding side lower part in casing 1 is also established earth leakage protective device 16 and fuse 12, earth leakage protective device 16 is connected by the upper end of lead with fuse 12, the lower end of fuse 12 is connected with opening button 5 by lead, and be connected with relay protection A.C. contactor 7 simultaneously, when the switch closure of earth leakage protective device 16 is served electricity, the upper end of three-phase firewire input relay protection A.C. contactor 7, wherein a phase firewire is imported fuse 12 simultaneously, and through fuse 12 input relay protection A.C. contactors 7, relay protection A.C. contactor 7 is by lead-in wire and branch, switch knob 5,4 connect, and realize dividing, switch knob 5,4 running protection functions; On the upper face of casing 1, also be provided with combined floodgate run signal pilot lamp 10 and separating brake stop signal pilot lamp 11; Described power consumption load 8 is by seal case 8a, liquid heat medium 8b, combined heated pipe 8c constitutes, liquid heat medium 8b and combined heated pipe 8c all are contained in the seal case 8a, combined heated pipe 8c is connected with relay protection A.C. contactor 7 by lead, establish liquid heat medium in upper end wall one side of seal case 8a and add pipe 8e, opposite side is established safety valve 8d, on the sidewall of seal case 8a, establish liquid level and show glass tube 8f, on the sidewall of the bottom of seal case 8a, establish the bleeder valve 8g of liquid heat medium 8b, temperature probe 8m inserts in the thermometer hole of seal case 8a, and is connected with temperature controller 9 by lead; Described casing 1 is the rectangular parallelepiped housing, on the right side wall of casing 1, establish junction block 13, establish insulcrete 17, establish chamber door 18 in the front side of casing 1 at the base portion of junction block 13, on casing 1 left side wall, establish liquid level and show glass tube view window 14, be provided with roller 15 in the bottom of casing 1.Fig. 8 has provided when embodiment 1 uses, this portable metrology charge instrument is connected with client's low pressure leading-out terminal by cable, electric energy meter on-site calibrator is connected on the tested electric energy meter, zero load the client, when this portable metrology charge instrument does not start yet, the image that electric energy meter on-site calibrator shows is incomplete phasor graph.Fig. 9 has provided when embodiment 1 uses, and under the uncharge situation of client, after starting this portable metrology charge instrument, the image that electric energy meter on-site calibrator shows is the standard phasor graph.Figure 10 has provided when embodiment 2 uses, and under the uncharge situation of client, when this portable metrology charge instrument did not start yet, the image that electric energy meter on-site calibrator shows was incomplete phasor graph.Figure 11 has provided when embodiment 2 uses, and when portable metrology charge instrument started, what electric energy meter on-site calibrator showed was the standard phasor graph.

Embodiment 1

On November 14th, 2007, Laiwu City urban credit cooperative street lamp electric energy meter is detected, this is a low-pressure meter, adopts the high low meter that supplies, and this portable metrology charge instrument is connected with the low pressure leading-out terminal that its client uses by cable, and the low pressure of closing goes out wiretap, electric energy meter on-site calibrator is connected on the tested electric energy meter, starts portable metrology charge instrument, on electric energy meter on-site calibrator, demonstrate the standard phasor graph, through with put into operation after on-load actual measurement, the effect unanimity.

Embodiment 2

On November 27th, 2007, Laiwu City dragon credit big restaurant electric energy meter is detected, this is a high pressure gauge, adopts massive quantity power supply and measurement, and this portable metrology charge instrument is connected with the low pressure leading-out terminal that its client uses by cable, and the low pressure of closing goes out wiretap, electric energy meter on-site calibrator is connected on the tested electric energy meter, start this portable metrology charge instrument after, on electric energy meter on-site calibrator, demonstrate the standard phasor graph, through with put into operation after on-load actual measurement, the effect unanimity.

Claims (5)

1. portable metrology charge instrument; by casing (1); reometer (2); voltage table (3); switch knob (4); opening button (5) constitutes; reometer (2); voltage table (3); switch knob (4) and opening button (5) are installed on the upper face of casing (1); it is characterized in that the fixing current transformer (6) of going up of preceding upper lateral part in casing (1); preceding side lower part in casing (1) fixing relay protection A.C. contactor (7) and the control A.C. contactor (7 ') gone up side by side; the fixing upward power consumption load (8) of rear side in casing (1); power consumption load (8) is connected with control A.C. contactor (7 ') by lead; on the upper face of casing (1), also establish temperature controller (9); relay protection A.C. contactor (7) is connected in series with control A.C. contactor (7 '), and the upper end of control A.C. contactor (7 ') is connected with the lower end of temperature controller (9) with relay protection A.C. contactor (7) by lead respectively.
2. portable metrology charge instrument according to claim 1; it is characterized in that the preceding side lower part in casing (1) also establishes earth leakage protective device (16) and fuse (12); earth leakage protective device (16) is connected by the upper end of lead with fuse (12); the lower end of fuse (12) is connected with opening button (5) by lead; and be connected with relay protection A.C. contactor (7) simultaneously; when the switch closure of earth leakage protective device (16) is served electricity; the upper end of three-phase firewire input relay protection A.C. contactor (7); wherein a phase firewire is imported fuse (12) simultaneously; and through fuse (12) input relay protection A.C. contactor (7), relay protection A.C. contactor (7) is by lead-in wire and branch; switch knob (5; 4) connect.
3. portable metrology charge instrument according to claim 1 is characterized in that also being provided with combined floodgate run signal pilot lamp (10) and separating brake stop signal pilot lamp (11) on the upper face of casing (1).
4. portable metrology charge instrument according to claim 1; it is characterized in that described power consumption load (8) is by seal case (8a); liquid heat medium (8b); combined heated pipe (8c) constitutes; liquid heat medium (8b) and combined heated pipe (8c) all are contained in the seal case (8a); combined heated pipe (8c) is connected with relay protection A.C. contactor (7) by lead; establish liquid heat medium in upper end wall one side of seal case (8a) and add pipe (8e); opposite side is established safety valve (8d); on a sidewall of seal case (8a), establish liquid level and show glass tube (8f); on the bottom sidewall of seal case (8a), establish the bleeder valve (8g) of liquid heat medium (8b); temperature probe (8m) inserts in the thermometer hole of seal case (8a), and is connected with temperature controller (9) by lead.
5. according to claim 1 or 3 described portable metrology charge instruments, it is characterized in that described casing (1) is the rectangular parallelepiped housing, on the right side wall of casing (1), establish junction block (13), establish insulcrete (17) at the base portion of junction block (13), establish chamber door (18) in the front side of casing (1), on casing (1) left side wall, establish liquid level and show glass tube view window (14), be provided with roller (15) in the bottom of casing (1).
CN200810013748XA 2008-01-11 2008-01-11 Portable metrology charge instrument CN101231333B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200810013748XA CN101231333B (en) 2008-01-11 2008-01-11 Portable metrology charge instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200810013748XA CN101231333B (en) 2008-01-11 2008-01-11 Portable metrology charge instrument

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CN101231333A true CN101231333A (en) 2008-07-30
CN101231333B CN101231333B (en) 2012-01-18

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102593735A (en) * 2012-02-27 2012-07-18 江苏省电力公司太仓市供电公司 Portable relay-protection working platform
CN102608374A (en) * 2012-03-30 2012-07-25 辽宁省电力有限公司丹东供电公司 Portable unit power utilization metering device
CN103941218A (en) * 2014-05-20 2014-07-23 莱芜鲁能开源集团电器有限公司 On-site general load tester for newly-mounted electric energy meter
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

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1270188C (en) * 2002-01-30 2006-08-16 湖南省电力试验研究所 Fictitious load source for in-situ checking electric energy meter
CN2938136Y (en) * 2006-08-29 2007-08-22 宋国元 Electric energy field detector with virtual loading
CN201149617Y (en) * 2008-01-11 2008-11-12 莱芜供电公司 Portable load instrument for measurement specially

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102593735A (en) * 2012-02-27 2012-07-18 江苏省电力公司太仓市供电公司 Portable relay-protection working platform
CN102593735B (en) * 2012-02-27 2013-11-06 江苏省电力公司太仓市供电公司 Portable relay-protection working platform
CN102608374A (en) * 2012-03-30 2012-07-25 辽宁省电力有限公司丹东供电公司 Portable unit power utilization metering device
CN103941218A (en) * 2014-05-20 2014-07-23 莱芜鲁能开源集团电器有限公司 On-site general load tester for newly-mounted electric energy meter
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
CN103941218B (en) * 2014-05-20 2016-08-24 莱芜鲁能开源集团电器有限公司 New clothes electric energy meter scene Universal load tester
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

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Effective date of registration: 20121214

Address after: 271100 Laiwu, Shandong Province, West Avenue, No. 21, No.

Patentee after: Laiwu Power Supply Co., Ltd. of Shandong Electric Power Corporation

Patentee after: State Grid Corporation of China

Address before: 271100 Laiwu power supply company, No. 21 West Main Street, Laiwu, Shandong

Patentee before: Laiwu Power Supply Company

ASS Succession or assignment of patent right

Owner name: STATE GRID CORPORATION OF CHINA

Effective date: 20121214

Owner name: LAIWU POWER SUPPLY COMPANY OF SHANDONG ELECTRIC PO

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