CN101231333B - Portable metrology charge instrument - Google Patents

Portable metrology charge instrument Download PDF

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Publication number
CN101231333B
CN101231333B CN200810013748XA CN200810013748A CN101231333B CN 101231333 B CN101231333 B CN 101231333B CN 200810013748X A CN200810013748X A CN 200810013748XA CN 200810013748 A CN200810013748 A CN 200810013748A CN 101231333 B CN101231333 B CN 101231333B
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CN
China
Prior art keywords
contactor
casing
relay protection
lead
fuse
Prior art date
Application number
CN200810013748XA
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Chinese (zh)
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CN101231333A (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; Band electric energy meter field tester is just pinpointed the problems when site inspection is measured; This has often caused certain loss, and labour cost is high, 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 that simultaneously, system receives by the pulse signal of school electric energy meter through pulsating sampler and realizes the verification to electric energy meter.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; Still there is following deficiency in present employed electric energy meter on-site calibrator: 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 on-the-spot the detection receive client's restriction; 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; In addition because of power customer during with capacitive loads such as electric welding, smeltings; Metrological personnel also is difficult to utilize electric energy meter on-site calibrator to judge the correctness of its WT-MSR wiring; This repeatedly tests client's WT-MSR with regard to causing metrological personnel, and 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 scheme that the present invention adopted is: this portable metrology charge instrument; Comprise casing, reometer, voltage table, switch knob, opening button, reometer, voltage table, switch knob and opening button are installed on the upper face of casing, it is characterized in that the preceding upper lateral part in casing is fixed 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 through lead, on the upper face of casing, also establishes temperature controller; The relay protection A.C. contactor is connected in series with the control A.C. contactor, and the upper end of control A.C. contactor connects through the lower ends of lead and temperature controller and relay protection A.C. contactor respectively; Described reometer is connected in the secondary circuit of current transformer; The L1 that described voltage table is connected in parallel on the earth leakage protective device lower end and L2 mutually between; The upper end of described switch knob connects the lower end of opening button; And switch knob is parallelly connected with the normally opened contact of the suction magnetic coil KM1 of relay protection A.C. contactor, and described opening button is connected on after the fuse, and its lower end connects switch knob; Inserting the earth leakage protective device of voltage table and the upper end of relay protection A.C. contactor connects; Temperature controller is connected among the L1, L2, L3 phase circuit of relay protection A.C. contactor, and current transformer is connected on the L2 phase circuit of relay protection A.C. contactor lower end, and the combined heated pipe in the power consumption load is connected on the lower end L1, L2, L3 phase circuit of control A.C. contactor; On-off function through temperature controller realization power consumption load provides the simulation output load through the power consumption load, the duty of temperature controller control power consumption load, thus reach a kind of balancing the load; Earth leakage protective device is connected with the upper end of fuse through lead; The lower end of fuse is connected with opening button through 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 connected with branch, switch knob through lead-in wire, realizes dividing, switch knob running protection function.

The present invention also implements through following measure: described earth leakage protective device and fuse are located at the preceding side lower part in the casing; 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 is made up of seal case, liquid heat medium, combined heated pipe, and 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 through lead; Heating realizes the power consumption load to liquid heat medium through the combined heated pipe, through the adjustment realization power consumption size of temperature controller, 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, establishes liquid level and shows glass tube, on the side walls of seal case, establishes the bleeder valve of liquid heat medium; Temperature probe inserts in the thermometer hole of seal case, and is connected with temperature controller through lead; Described casing is the rectangular parallelepiped housing, on the right side wall of casing, establishes junction block, establishes insulcrete at the base portion of junction block, establishes chamber door in the front side of casing, on the casing left side wall, establishes liquid level and shows the glass tube view window, 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 appearance 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.Startup along with 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: detects with the electric energy meter field effect appearance of present use and compares, carry load device owing to increased, so; Do not reach because of various reasons under the condition that load send electricity the client, carry out field-checking, the line inspection, guaranteed that client's electricity consumption accurately measures through provide simulation to load for the client; Stop the generation of error connection; Prevent electric quantity loss, solved and already expanded the new family of going up, avoided secondary to look into wiring because of the zero load difficult problem that can't 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; Constitute by casing 1, reometer 2, voltage table 3, switch knob 4, opening button 5; 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 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 the preceding side lower part casing 1 in ', power consumption load 8 on the rear side in casing 1 is fixed; Power consumption load 8 is through 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 connect through the lower ends of lead respectively with temperature controller 9 and relay protection A.C. contactor 7; Described reometer 2 is connected in the secondary circuit of current transformer 6; The L1 that described voltage table 3 is connected in parallel on earth leakage protective device 16 lower ends and L2 mutually between; The upper end of described switch knob 4 connects the lower end of opening button 5; And switch knob 4 is parallelly connected with the normally opened contact of inhaling magnetic coil KM1, and described opening button 5 is connected on after the fuse 12, and its lower end connects switch knob 4; Inserting the earth leakage protective device 16 of voltage table 3 and the upper end of relay protection A.C. contactor 7 connects; Temperature controller 9 is connected among the L1, L2, L3 phase circuit of relay protection A.C. contactor 7, and current transformer 6 is connected on the relay protection A.C. contactor 7 lower end L2 phase circuits, the combined heated pipe 8c in the power consumption load 8 be connected control A.C. contactor 7 ' lower end L1, L2, L3 phase circuit on.

The present invention also implements through 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 through the upper end of lead with fuse 12; The lower end of fuse 12 is connected with opening button 5 through 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 connected with branch, switch knob 5,4 through lead-in wire, realizes 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 made up of seal case 8a, liquid heat medium 8b, combined heated pipe 8c; 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 through lead, establishes liquid heat medium in upper end wall one side of seal case 8a and adds pipe 8e, and opposite side is established safety valve 8d; On the sidewall of seal case 8a, establish liquid level and show glass tube 8f; On the side walls 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 through 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 through 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 electric energy meter on-site calibrator images displayed 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 electric energy meter on-site calibrator images displayed 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 electric energy meter on-site calibrator images displayed 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; Adopt the high low meter that supplies, this portable metrology charge instrument is connected with the low pressure leading-out terminal that its client uses through 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, effect is consistent.

Embodiment 2

On November 27th, 2007, Laiwu City dragon credit big restaurant electric energy meter is detected, this is a high pressure gauge; Adopt massive quantity power supply and measurement, this portable metrology charge instrument is connected with the low pressure leading-out terminal that its client uses through 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, effect is consistent.

Claims (4)

1. portable metrology charge instrument; Comprise casing (1), reometer (2), voltage table (3), switch knob (4), opening button (5); 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 ') through lead, on the upper face of casing (1), also establishes 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 ') connects through the lower ends of lead and temperature controller (9) and relay protection A.C. contactor (7) respectively; Described reometer (2) is connected in the secondary circuit of current transformer (6); The L1 that described voltage table (3) is connected in parallel on earth leakage protective device (16) lower end and L2 mutually between; The upper end of described switch knob (4) connects the lower end of opening button (5); And switch knob (4) is parallelly connected with the normally opened contact of the suction magnetic coil KM1 of relay protection A.C. contactor (7); Described opening button (5) is connected on fuse (12) afterwards; Its lower end connects switch knob (4), and the earth leakage protective device (16) that inserts voltage table (3) connects with the upper end of relay protection A.C. contactor (7), and temperature controller (9) is connected among the L1, L2, L3 phase circuit of relay protection A.C. contactor (7); Current transformer (6) is connected on the L2 phase circuit of relay protection A.C. contactor (7) lower end, and the combined heated pipe (8c) in the power consumption load (8) is connected on the lower end L1, L2, L3 phase circuit of control A.C. contactor (7 '); Described power consumption load (8) is made up of seal case (8a), liquid heat medium (8b), combined heated pipe (8c); 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) through 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), establishes liquid level and shows glass tube (8f), on the side walls of seal case (8a), establishes 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) through lead; Earth leakage protective device (16) is connected through the upper end of lead with fuse (12); The lower end of fuse (12) is connected with opening button (5) through 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 connected with branch, switch knob (5,4) through lead-in wire.
2. portable metrology charge instrument according to claim 1 is characterized in that: described earth leakage protective device (16) and fuse (12) are located at the preceding side lower part in the casing (1).
3. portable metrology charge instrument according to claim 1 is characterized in that on the upper face of casing (1), also being provided with combined floodgate run signal pilot lamp (10) and separating brake stop signal pilot lamp (11).
4. 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), 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).
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 CN101231333A (en) 2008-07-30
CN101231333B true CN101231333B (en) 2012-01-18

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1435697A (en) * 2002-01-30 2003-08-13 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

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1435697A (en) * 2002-01-30 2003-08-13 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

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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

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

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