CN105259381A - Portable active electric energy metering device - Google Patents
Portable active electric energy metering device Download PDFInfo
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- CN105259381A CN105259381A CN201510714291.5A CN201510714291A CN105259381A CN 105259381 A CN105259381 A CN 105259381A CN 201510714291 A CN201510714291 A CN 201510714291A CN 105259381 A CN105259381 A CN 105259381A
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Abstract
The present invention provides a portable active energy metering device which comprises an mA-level three-phase four-wire active digital electric energy meter, mA-level open-type current transformers, a voltage collection conductive wire formed by a 1.5 mm<2> soft copper conductive wire, a current collection conductive wire formed by a 1 mm<2> soft copper conductive wire, an insertion connection piece, a wire connection clamp and a microcomputer time control switch. The voltage collection conductive wire is divided into two parts by the insertion connection piece. One end of the voltage collection conductive wire is provided with the wire connection clamp. The microcomputer time control switch is connected to the L end and N end of the power supply of the three-phase four-wire active digital electric energy meter in series. The A, B and C wires of a rural power network carrier wire to be measured are sleeved by three open-type current transformers. The portable active energy metering device has the advantages of simple structure and convenient wire connection in use, the metering precision reaches 0.2 to 0.5 grade level of the requirement of a power supply department, the electrical energy metering reading at a time can be conveniently locked, and the requirement of a temporary electrical energy metering device by a rural network branch line is effectively satisfied.
Description
Technical field
The present invention relates to electric power meter technical field, be specifically related to a kind of easy assembling type active energy measuring apparatus.
Background technology
At present, in electrical network, the application of 400V rural power grids is comparatively general, because electricity consumption in agricultural operation has the feature such as dispersiveness, seasonality, thus divide circuit numerous, have a very wide distribution, the electricity consumption cycle is shorter, thus often needs to install ammeter when electricity consumption temporarily and measures electricity consumption, dismounting ammeter again after finishing using.Be generally ampere level straight-through current transformer to the device of rural power grids branched line temporary electricity utilization metering to add three-phase and four-line active electric energy meter and carry out, it needs power failure dismounting bus, affects user power utilization when mounted; Electrical energy meter electricity line ball must adopt 2.5 square millimeters of copper cash, and secondary winding in current transformer line must adopt 4 square millimeters of copper cash, and adopt bind or nut crimping martingale, connection box of electric energy meter difficulty, workload is large, and dress surface condition requires high; And the electric energy meter of interim installing can not enter the low pressure electricity consumption acquisition system (zero point that can gather the electric energy meter every day adding system freezes registration) of power supply department, thus can not read and freeze registration zero point, be unfavorable for effective supervision of power supply department to agricultural operation electricity consumption.
For overcoming to have a power failure, the problem of electric energy meter is installed, usually adopt as model K-30*20 ampere level open type current transformer replaces straight-through current transformer to the device of rural power grids branched line temporary electricity utilization metering at present, a bus need not be torn open and can hot line job in dress table process, do not affect client's normal electricity consumption, dress table is relatively convenient.But open type current transformer precision is on the market general not high at present, and precision is generally 1.0 grades (below primary current 200A is 1% error), is difficult to the 0.2-0.5 level level reached required by power supply department electric energy metrical; And its still exist wiring cumbersome, can not read and freeze the problems such as registration zero point.
Summary of the invention
The object of the invention is: for the problem existing for current rural power grids branched line temporary electricity electric power meter, a kind of structure is simple, easy-to-connect when using, measuring accuracy reach power supply department requirement 0.2-0.5 level level is provided and the easy assembling type active energy measuring apparatus of a certain moment electric energy metrical registration can be locked easily.
Technical scheme of the present invention is: easy assembling type active energy measuring apparatus of the present invention, the three-phase and four-line comprising milliampere level is gained merit digital electricity meter, voltage acquisition wire, open type current transformer and current acquisition wire, and above-mentioned three-phase and four-line digital electricity meter 1 of gaining merit has A, B, C, N totally 4 sampled voltage input terminals, L and N totally 2 power ends and IA+, IA-, IB+, IB-, IC+, IC-totally 6 sample rate current input terminals; Its design feature is: also comprise connector, binding clip and microcomputer time-controlled switch;
Above-mentioned voltage acquisition wire is 1.5 square millimeters of soft copper cash; Connector is working of plastics, and connector comprises the male and female that plug type cooperatively interacts; Female is fixedly installed 4 voltage acquisition wires; The other end of these 4 voltage acquisition wires is provided with connection-peg, and the corresponding grafting of A, B, C, N sampled voltage input terminal of digital electricity meter of gaining merit with three-phase and four-line is respectively electrically connected; Male is fixedly installed 4 voltage acquisition wires;
Binding clip is the copper electricity folder being provided with insulation sleeve, and binding clip is provided with 4, termination each welding 1 respectively of 4 voltage acquisition wires that these 4 binding clips are fixedly installed in male;
Microcomputer time-controlled switch has power input, power supply input T end, power output end and power supply and exports T end; Gain merit any one of A, B, C sampled voltage input terminal of digital electricity meter of power input and the three-phase and four-line of microcomputer time-controlled switch is electrically connected; The gain merit sampled voltage input terminal N of digital electricity meter of power supply input T end and three-phase and four-line is electrically connected; The power output end of microcomputer time-controlled switch and power supply export the gain merit power supply L of digital electricity meter of T end and three-phase and four-line and to hold and N holds corresponding electrical connection;
Above-mentioned open type current transformer comprises secondary iron core, two wires winding conducting wire, an iron core; Two wires winding is wrapped on secondary iron core equably; An iron core is rolled by siliconized plate and is rolled into, and during use, an iron core is coated on rural power grids current carrying wire to be measured and forms a winding; Open type current transformer is provided with 3, each socket 1 respectively on A, B, C line of rural power grids current carrying wire to be measured; The two wires winding of each open type current transformer connects respectively 2 current acquisition wires; One end of current acquisition wire is provided with connection-peg; One end with connection-peg of 6 current acquisition wires respectively corresponding and three-phase and four-line gain merit digital electricity meter IA+, IA-, IB+, IB-, IC+, IC-totally 6 corresponding grafting of sample rate current input terminal be electrically connected; Current acquisition wire is 1 square millimeter of soft copper conductor.
Further scheme is: above-mentioned microcomputer time-controlled switch is the microcomputer time-controlled switch of KG316T model.
The present invention has positive effect: (1) easy assembling type electric power meter of the present invention, it is by adopting milliampere level open type current transformer, in the middle of voltage acquisition wire, connector is set, one end of voltage acquisition wire arranges binding clip, the other end arranges connection-peg, current acquisition wire one end arranges the first-class structural design of grafting, when it is used, with the current carrying wire of rural power grids branched line to be measured easily hot line job complete and be connected, and voltage, current lead digital electricity meter of can gaining merit with three-phase and four-line is easily connected, easy-to-connect is quick, time saving and energy saving, improve work efficiency.(2) easy assembling type electric power meter of the present invention, it is by adopting the structural improvement such as the selection of the wire diameter of the milliampere level open type current transformer, milliampere level electric energy meter, voltage acquisition wire and the current acquisition wire that improve, make its measuring accuracy can be better than same device of the prior art, effectively meet the requirement of power supply department 0.2-0.5 class precision.(3) easy assembling type electric power meter of the present invention, it is connected in series microcomputer time-controlled switch on gaining merit digital electricity meter at three-phase and four-line, the working time of electric energy meter is controlled by microcomputer time-controlled switch, zero point is freezed registration in locking and the reading that can realize electric energy meter registration easily, avoid on-the-spot difficulty of checking meter at dead of night, promote power supply department to the supervision level of agricultural operation electricity consumption.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention, also show the electrical connection of itself and rural power grids current carrying wire to be measured in figure;
Fig. 2 is the theory structure schematic diagram of the open type current transformer in Fig. 1.
Reference numeral in above-mentioned accompanying drawing is as follows:
Three-phase and four-line is gained merit digital electricity meter 1,
Voltage acquisition wire 2,
Connector 3, male 31, female 32,
Binding clip 4,
Microcomputer time-controlled switch 5,
Open type current transformer 6, secondary iron core 51, two wires winding 52, iron core 43,
Current acquisition wire 7,
Rural power grids current carrying wire 8.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
(embodiment 1)
See Fig. 1, the easy assembling type active energy measuring apparatus of the present embodiment, it forms primarily of gain merit digital electricity meter 1, voltage acquisition wire 2, connector 3, binding clip 4, microcomputer time-controlled switch 5, open type current transformer 6 and current acquisition wire 7 of three-phase and four-line.
Three-phase and four-line digital electricity meter 1 of gaining merit has A, B, C, N totally 4 sampled voltage input terminals, L and N totally 2 power ends and IA+, IA-, IB+, IB-, IC+, IC-totally 6 sample rate current input terminals; Three-phase and four-line gains merit digital electricity meter 1 for milliampere level active electric energy meter.
Voltage acquisition wire 2 adopts 1.5 square millimeters of soft copper cash.
Connector 3 is working of plastics, and connector 3 is made up of male 31 and female 32, and male 31 and female 32 plug type cooperatively interact; Female 32 is fixedly installed 4 voltage acquisition wires 2; The other end of these 4 voltage acquisition wires 2 is provided with connection-peg, and the corresponding grafting of A, B, C, N sampled voltage input terminal of digital electricity meter 1 of gaining merit with three-phase and four-line is respectively electrically connected; Male 31 is fixedly installed 4 voltage acquisition wires 2, and when male 31 and female 32 grafting, the phase place of 4 voltage acquisition wires 2 in male 31 is electrically connected with A, B, C, N one_to_one corresponding of the voltage acquisition wire 2 of 4 in female 32.
Binding clip 4 is for being provided with the copper electricity folder of insulation sleeve, and binding clip 4 is provided with 4, termination each welding 1 respectively of 4 voltage acquisition wires 2 that these 4 binding clips 4 are fixedly installed in male 31.
Preferably adopt the microcomputer time-controlled switch of KG316T model in microcomputer time-controlled switch 5 the present embodiment, it has power input (showing " entering " word in diagram), power supply input T end, power output end (going out) and power supply and exports T end; Gain merit any one of A, B, C sampled voltage input terminal of digital electricity meter 1 of power input and the three-phase and four-line of microcomputer time-controlled switch 5 is electrically connected (what show in figure is be electrically connected with C terminals); The gain merit sampled voltage input terminal N of digital electricity meter 1 of power supply input T end and three-phase and four-line is electrically connected; The gain merit power supply L of digital electricity meter 1 of power output end and the three-phase and four-line of microcomputer time-controlled switch 5 holds and is electrically connected; The power supply of microcomputer time-controlled switch 5 exports the gain merit power supply N of digital electricity meter 1 of T end and three-phase and four-line and holds and be electrically connected.Microcomputer time-controlled switch 5 and three-phase and four-line digital electricity meter 1 of gaining merit is connected in series, the working time of electric energy meter is controlled by microcomputer time-controlled switch 5, reach the locking of electric energy meter registration, such as, the 23 o'clock 59 minute 30 second energising work of microcomputer time-controlled switch 5 in one day can be set, quit work cutting off the electricity supply for 00: 00: 00 of next day, locking electric energy meter registration, avoids on-the-spot difficulty of checking meter at dead of night.
See Fig. 2, rural power grids current carrying wire 8 to be measured when open type current transformer 6 comprises secondary iron core 61, two wires winding conducting wire 62, iron core 63 and uses; Rural power grids current carrying wire 8 has A, B, C, N totally 4.
Open type current transformer 6, on the basis of commercially available open type current transformer, adopts 1 square millimeter of soft copper wire to increase the transformation of winding quantity and forms, make current transformer reach milliampere level and export, realize accurate measurement; Two wires winding 62 is wrapped on secondary iron core 61 equably; An iron core 63 is rolled by siliconized plate and is rolled into, and during use, an iron core 63 is coated on rural power grids current carrying wire 8 and forms a winding; Open type current transformer 6 is provided with 3, each socket 1 respectively on A, B, C line of 4 rural power grids current carrying wire 8.The two wires winding 62 of open type current transformer 6 has 2 joints (K1 and K2 in Fig. 2).
Current acquisition wire 7 is provided with 6 altogether, and each open type current transformer 6 is supporting arranges 2 current acquisition wires 7; These 2 current acquisition wires 7 are electrically connected with 2 terminals of the Secondary Winding of open type current transformer 6 are corresponding respectively; One end of current acquisition wire 7 is provided with connection-peg; One end with connection-peg of 6 current acquisition wires 7 respectively corresponding and three-phase and four-line gain merit digital electricity meter 1 IA+, IA-, IB+, IB-, IC+, IC-totally 6 corresponding grafting of sample rate current input terminal be electrically connected; Preferably 1 square millimeter of soft copper cash is adopted in current acquisition wire 7 the present embodiment.
To sum up, the easy assembling type electric power meter of the present embodiment, it arranges connector by adopting in the middle of milliampere level open type current transformer, voltage acquisition wire, one end of voltage acquisition wire arranges binding clip, the other end arranges connection-peg, current acquisition wire one end arranges the first-class structural design of grafting, when it is used, with the current carrying wire of rural power grids branched line to be measured easily hot line job complete and be connected, and voltage, current lead can be gained merit with three-phase and four-line easily, digital electricity meter is connected, easy-to-connect is quick, time saving and energy saving, improve work efficiency; It is by adopting the structural improvement such as the selection of the wire diameter of the milliampere level open type current transformer, milliampere level electric energy meter, voltage acquisition wire and the current acquisition wire that improve, make its measuring accuracy can be better than same device of the prior art, effectively meet the requirement of power supply department 0.2-0.5 class precision; It is connected in series microcomputer time-controlled switch on gaining merit digital electricity meter at three-phase and four-line, the working time of electric energy meter is controlled by microcomputer time-controlled switch, zero point is freezed registration in locking and the reading that can realize electric energy meter registration easily, avoid on-the-spot difficulty of checking meter at dead of night, promote power supply department to the supervision level of agricultural operation electricity consumption.
Above embodiment is the explanation to the specific embodiment of the present invention; but not limitation of the present invention; person skilled in the relevant technique without departing from the spirit and scope of the present invention; can also make various conversion and change and obtain corresponding equivalent technical scheme, therefore all equivalent technical schemes all should be included into scope of patent protection of the present invention.
Claims (2)
1. an easy assembling type active energy measuring apparatus, the three-phase and four-line comprising milliampere level is gained merit digital electricity meter (1), voltage acquisition wire (2), open type current transformer (6) and current acquisition wire (7), and described three-phase and four-line digital electricity meter 1 of gaining merit has A, B, C, N totally 4 sampled voltage input terminals, L and N totally 2 power ends and IA+, IA-, IB+, IB-, IC+, IC-totally 6 sample rate current input terminals; It is characterized in that: also comprise connector (3), binding clip (4) and microcomputer time-controlled switch (5);
Described voltage acquisition wire (2) is 1.5 square millimeters of soft copper cash; Connector (3) is working of plastics, and connector (3) comprises the male (31) and female (32) that plug type cooperatively interacts; Female (32) is fixedly installed 4 voltage acquisition wires (2); The other end of these 4 voltage acquisition wires (2) is provided with connection-peg, and the corresponding grafting of A, B, C, N sampled voltage input terminal of digital electricity meter (1) of gaining merit with three-phase and four-line is respectively electrically connected; Male (31) is fixedly installed 4 voltage acquisition wires (2);
Binding clip (4) is for being provided with the copper electricity folder of insulation sleeve, and binding clip (4) is provided with 4, termination each welding 1 respectively of 4 voltage acquisition wires (2) that these 4 binding clips (4) are fixedly installed in male (31);
Microcomputer time-controlled switch (5) has power input, power supply input T end, power output end and power supply and exports T end; Gain merit any one of A, B, C sampled voltage input terminal of digital electricity meter (1) of power input and the three-phase and four-line of microcomputer time-controlled switch (5) is electrically connected; The gain merit sampled voltage input terminal N of digital electricity meter (1) of power supply input T end and three-phase and four-line is electrically connected; The power output end of microcomputer time-controlled switch (5) and power supply export the gain merit power supply L of digital electricity meter (1) of T end and three-phase and four-line and to hold and N holds corresponding electrical connection;
Described open type current transformer (6) comprises secondary iron core (61), two wires winding conducting wire (62), an iron core (63); Two wires winding (62) is wrapped on secondary iron core (61) equably; One time iron core (63) is rolled by siliconized plate and is rolled into, and during use, an iron core (63) is coated on the upper formation winding of rural power grids current carrying wire (8) to be measured; Open type current transformer (6) is provided with 3, each socket 1 respectively on A, B, C line of rural power grids current carrying wire (8) to be measured; The two wires winding (62) of each open type current transformer (6) connects respectively 2 current acquisition wires (7); One end of current acquisition wire (7) is provided with connection-peg; One end with connection-peg of 6 current acquisition wires (7) respectively corresponding and three-phase and four-line gain merit digital electricity meter (1) IA+, IA-, IB+, IB-, IC+, IC-totally 6 corresponding grafting of sample rate current input terminal be electrically connected; Current acquisition wire (7) is 1 square millimeter of soft copper cash.
2. easy assembling type active energy measuring apparatus according to claim 1, is characterized in that: the microcomputer time-controlled switch that described microcomputer time-controlled switch (5) is KG316T model.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510714291.5A CN105259381B (en) | 2015-10-28 | 2015-10-28 | Portable active electric energy metering device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510714291.5A CN105259381B (en) | 2015-10-28 | 2015-10-28 | Portable active electric energy metering device |
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| CN105259381A true CN105259381A (en) | 2016-01-20 |
| CN105259381B CN105259381B (en) | 2017-05-10 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105675937A (en) * | 2016-02-22 | 2016-06-15 | 国家电网公司 | Wiring device for electric energy metering combined junction box |
| CN108761197A (en) * | 2018-03-02 | 2018-11-06 | 国网山东省电力公司潍坊供电公司 | Can hot line job mobile examination metering method and realize the device of this method |
| CN108896798A (en) * | 2018-07-09 | 2018-11-27 | 国网山东省电力公司莱芜供电公司 | A kind of electric energy metering device |
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| CN102419384A (en) * | 2010-09-24 | 2012-04-18 | 陈家斌 | Low-voltage electric energy metering device capable of being assembled and disassembled in electrified state |
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| CN2280912Y (en) * | 1996-08-06 | 1998-05-06 | 湛江威霸电表厂 | Double metering-function three-phase four-wire mutural-induction electric meter preventing from fraudulent use of electricity |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105675937A (en) * | 2016-02-22 | 2016-06-15 | 国家电网公司 | Wiring device for electric energy metering combined junction box |
| CN108761197A (en) * | 2018-03-02 | 2018-11-06 | 国网山东省电力公司潍坊供电公司 | Can hot line job mobile examination metering method and realize the device of this method |
| CN108896798A (en) * | 2018-07-09 | 2018-11-27 | 国网山东省电力公司莱芜供电公司 | A kind of electric energy metering device |
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| CN105259381B (en) | 2017-05-10 |
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