CN205302779U - Electric energy measurement analogue test device - Google Patents
Electric energy measurement analogue test device Download PDFInfo
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- CN205302779U CN205302779U CN201520978998.2U CN201520978998U CN205302779U CN 205302779 U CN205302779 U CN 205302779U CN 201520978998 U CN201520978998 U CN 201520978998U CN 205302779 U CN205302779 U CN 205302779U
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- 238000005259 measurement Methods 0.000 claims description 20
- 238000004804 winding Methods 0.000 claims description 17
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
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Abstract
The utility model discloses an electric energy measurement analogue test device, including installing high voltage power supply input line, the low voltage power supply input line, current transformer, voltage transformer, combination terminal box, electric energy meter and the burden accuse terminal in installation cabinet, high voltage power supply input line, current transformer, voltage transformer all are located installation cabinet's third is regional, the electric energy meter, joint terminal box and burden accuse terminal lie in installation cabinet's first region, the the low voltage power supply input line is located installation cabinet's second area, be about to third region and second area that high -voltage compartment and low -pressure section located installation cabinet respectively, through the high voltage power supply input line, a current transformer, voltage transformer, the electric energy meter, burden accuse terminal can be realized simulating the massive quantity power supply mode and measured the electric energy, through the the low voltage power supply input line, a current transformer, the high low meter mode simulation electric energy measurement that supplies can be simulated in electric energy meter and burden accuse terminal, the massive quantity power supply simulation both can have been carried out, can carry out the height again supplies low meter simulation, operations of users are facilitated.
Description
Technical field
This utility model relates to technical field of intelligence, particularly to a kind of electric energy metrical simulation test device.
Background technology
In order to improve electric energy metrical personnel and be engaged in dress table and meet electricity post personnel on site and install the technical ability of electric power meter, needing electric energy metrical personnel and be engaged in dress table and meet electricity post personnel and be simulated training and the examination of in-site installation electric power meter, this is accomplished by simulated field and installs the equipment of electric power meter.
When utilizing electric power meter that electric energy is measured, massive quantity power supply and measurement and the high mode for low meter can be adopted to measure, massive quantity power supply and measurement refers to that high-voltage line is powered, high-pressure side is measured, for low meter, height refers to that high-voltage line is powered, low-pressure side is measured, at present, mode of connection when adopting the equipment that different simulated fields installs electric power meter respectively massive quantity power supply and measurement and height to be measured for low meter mode is simulated, when both modes of connection are simulated by needs, the simulation of the one of which mode of connection need to be carried out first with a simulator, then in the simulation utilizing another simulator to carry out the another kind of mode of connection, it is not easy to human users.
Utility model content
Based on this, it is necessary to for unhandy problem, it is provided that a kind of user-friendly electric energy metrical simulation test device.
A kind of electric energy metrical simulation test device, including installing cabinet, high voltage power supply input line, low-tension supply input line, current transformer, voltage transformer, combined connection box, electric energy meter and negative control terminal, described high voltage power supply input line, described low-tension supply input line, described current transformer, described voltage transformer, described combined connection box, described electric energy meter and described negative control terminal may be contained within described installation cabinet, the first dividing plate and the second partition with described first dividing plate Relative vertical it is additionally provided with in described installation cabinet, described second partition is at a stalemate with the top of described installation cabinet, by the cooperation of described first dividing plate and described second partition, spatial separation in described installation cabinet is become first area, second area and the 3rd region, described first area and described second area lay respectively at the both sides of described second partition, described second area and described 3rd regional connectivity,
Described combined connection box, described electric energy meter and described negative control terminal are placed in the side of described second partition, it is positioned at described first area, and described electric energy meter and described negative control terminal are between the top and described combined connection box of described installation cabinet, described combined connection box is between described electric energy meter and described first dividing plate, described low-tension supply input line is placed in the opposite side of described second partition, and it is positioned at described second area, described current transformer is placed in the bottom of described installation cabinet, described voltage transformer is placed in the sidewall that described installation cabinet is relative with described second partition opposite side, and described voltage transformer is near the bottom of described installation cabinet, described current transformer, described voltage transformer and described high voltage power supply input line are respectively positioned in described 3rd region.
Above-mentioned electric energy metrical simulation test device, include and be installed on the high voltage power supply input line installed in cabinet, low-tension supply input line, current transformer, voltage transformer, combined connection box, electric energy meter and negative control terminal, high voltage power supply input line, current transformer, voltage transformer is respectively positioned on the 3rd region of described installation cabinet, electric energy meter, combined connection box and negative control terminal are positioned at the first area installing cabinet, low-tension supply input line is positioned at the second area installing cabinet, the 3rd region and the second area installing cabinet it is respectively arranged on by high-pressure section and low-pressure section, by high voltage power supply input line, current transformer, voltage transformer, electric energy meter, negative control terminal can realize simulation massive quantity power supply and measurement mode and electric energy is measured, by low-tension supply input line, current transformer, electric energy meter and negative control terminal can be simulated height and for low meter mode, electric energy be measured, thus, by above-mentioned electric energy metrical simulation test device, the electric energy metrical simulation of massive quantity power supply and measurement can be carried out, the high electric energy metrical for low meter can be carried out again simulate, user carries out massive quantity power supply and measurement respectively without using independent electric energy measuring equipment and the high electric energy metrical for low meter is simulated, user only need to carry out different connected modes in above-mentioned electric energy metrical simulation test device, the electric energy metrical simulation of different modes can be realized, above-mentioned electric energy metrical simulation test device is utilized user to be giveed training and examines, it is easy to user operation.
Accompanying drawing explanation
Fig. 1 is the front elevation of electric energy metrical simulation test device of the present utility model;
Fig. 2 is the back view of electric energy metrical simulation test device of the present utility model
Fig. 3 is the structural representation of the electric energy metrical simulation test device of an embodiment;
Fig. 4 is the structural representation of the electric energy metrical simulation test device of another embodiment;
Fig. 5 is the structural representation of the electric energy metrical simulation test device of another embodiment;
Fig. 6 is the structural representation of the electric energy metrical simulation test device of another embodiment.
Detailed description of the invention
Refer to Fig. 1 and Fig. 2, the electric energy metrical simulation test device of a kind of embodiment is provided, including high voltage power supply input line 100, low-tension supply input line 200, current transformer 300, voltage transformer 400, combined connection box 500, electric energy meter 600, negative control terminal 700 and installation cabinet 800, high voltage power supply input line 100, low-tension supply input line 200, current transformer 300, voltage transformer 400, combined connection box 500, electric energy meter 600 and negative control terminal 700 may be contained within installing in cabinet 800, install in cabinet 800 and be additionally provided with the first dividing plate 810 and the second partition 820 with the first dividing plate 810 Relative vertical, second partition 820 is at a stalemate with the top installing cabinet 800, by the cooperation of the first dividing plate 810 and second partition 820, spatial separation in installation cabinet 800 is become first area 830, second area 840 and the 3rd region 850, first area 830 and second area 840 lay respectively at the both sides of second partition 820, second area 840 connects with the 3rd region 850.
Combined connection box 500, electric energy meter 600 and negative control terminal 700 are placed in the side of second partition 820, it is positioned at first area 830, and electric energy meter 600 and negative control terminal 700 are between top and the combined connection box 500 of installing cabinet 800, combined connection box 500 is between electric energy meter 600 and the first dividing plate 810, low-tension supply input line 200 is placed in the opposite side of second partition 820, and it is positioned at second area 840, current transformer 300 is placed in the bottom installing cabinet 800, voltage transformer puts 400 in installing the sidewall that cabinet 800 is relative with second partition 820 opposite side, and voltage transformer 400 is near the bottom installing cabinet 800, current transformer 300, described voltage transformer 400 and described high voltage power supply input line 100 are respectively positioned in described 3rd region.
Above-mentioned electric energy metrical simulation test device, include and be installed on the high voltage power supply input line 100 installed in cabinet 800, low-tension supply input line 200, current transformer 300, voltage transformer 400, combined connection box 500, electric energy meter 600 and negative control terminal 700, high voltage power supply input line 100, current transformer 300, voltage transformer 400 is respectively positioned on the 3rd region of described installation cabinet 800, electric energy meter 600, combined connection box 500 and negative control terminal 700 are positioned at the first area installing cabinet 800, low-tension supply input line 100 is positioned at the second area installing cabinet 800, the 3rd region and the second area installing cabinet 800 it is respectively arranged on by high-pressure section and low-pressure section, by high voltage power supply input line 100, current transformer 300, voltage transformer 400, electric energy meter 600, negative control terminal 700 can realize simulation massive quantity power supply and measurement mode and electric energy is measured, by low-tension supply input line 200, current transformer 300, electric energy meter 600 and negative control terminal 700 can be simulated height and for low meter mode, electric energy be measured, thus, by above-mentioned electric energy metrical simulation test device, the electric energy metrical simulation of massive quantity power supply and measurement can be carried out, the high electric energy metrical for low meter can be carried out again simulate, user carries out massive quantity power supply and measurement respectively without using independent electric energy measuring equipment and the high electric energy metrical for low meter is simulated, user only need to carry out different connected modes in above-mentioned electric energy metrical simulation test device, the electric energy metrical simulation of different modes can be realized, above-mentioned electric energy metrical simulation test device is utilized user to be giveed training and examines, it is easy to user operation. and without the fund of costing a lot of money, except buying some fee of materials and processing charges, some will expire electric energy meter, negative control terminal, current transformer and voltage transformers of scrapping can be utilized to be fabricated to meet the electric energy metrical simulation test device of related personnel's on-the-job training and examination, save extensive fund for enterprise. each device is concentrated and is placed in installation cabinet 800, so can solve the problem that space is inadequate.
Specifically, current transformer 300 is arranged on the bottom installing cabinet 800, and the sidewall that remotely mounted cabinet 800 is relative with second partition 820 opposite side, to strengthen holding capacity, simultaneously by electric energy meter 600 and negative control terminal 700 sidewall that also remotely mounted cabinet 800 is relative with second partition 820 opposite side, make device uniform force, guarantee that device is solid and reliable, solve voltage transformer 400 to be arranged on the unbalance stress problem being likely to cause device on cabinet 800 sidewall relative with second partition 820 opposite side is installed, it is to avoid device overturning and have an accident.
Refer to Fig. 3 and Fig. 4, wherein in an embodiment, when needs simulation massive quantity power supply and measurement mode carries out electric energy metrical, high voltage power supply input line 100 is connected with the primary winding of current transformer 300, one end of the secondary coil of current transformer 300 is connected with electric energy meter 600 by combined connection box 500, electric energy meter 600 is connected with negative control terminal 700, negative control terminal 700 is connected with the other end of the secondary coil of current transformer 300 by combined connection box 500, and the other end ground connection of the secondary coil of current transformer 300, the secondary coil of current transformer 300, intelligent electric meter and negative control terminal 700 form electric current secondary loop, the electric current that the secondary coil of current transformer 300 produces flows into electric energy meter 600 by one end of the secondary coil of current transformer 300, electric current is flowed into negative control terminal 700 by electric energy meter 600, negative control terminal 700 is by the other end of the secondary coil of electric current inflow current transformer 300.The primary winding of voltage transformer 400 is connected with high voltage power supply input line 100, the secondary coil of voltage transformer 400 is connected with electric energy meter 600 and negative control terminal 700 respectively by combined connection box 500, form voltage secondary shunt circuit, the primary winding of voltage transformer 400 receives power supply high pressure, and the secondary coil of voltage transformer 400 produces voltage and voltage separately flows into electric energy meter 600 and negative control terminal 700.
In order to ensure power system security economical operation; the ruuning situation to power equipment is needed to carry out monitoring and measuring; but general measurement and protection device cannot directly access a high pressure equipment; namely high voltage power supply input line 100 can not be directly connected to; and needing to become the big electric current scaling transformation of high voltage power supply input line 100 small area analysis, instrument is measured in supply and protection device uses. Current transformer 300 is made up of primary winding, the iron core of Guan Bi and secondary coil, its the primary winding number of turn is little, go here and there in needing the power supply high input voltage line of electric current of measurement, therefore it often has whole electric currents of circuit to flow through, secondary coil turn ratio is more, it is serially connected in electric energy meter 600 and negative control terminal 700 loop, current transformer 300 is operationally, its electric current secondary loop is Guan Bi all the time, therefore the impedance of electric energy meter 600 and negative control terminal 700 series coil is only small, and the duty of current transformer 300 is close to short-circuit. Current transformer 300 is big for primary side electric current to be converted to secondary side small area analysis use, and secondary side can not be opened a way. In the present embodiment, when measuring the big electric current of high voltage power supply input line 100, measure for ease of electric energy meter 600, require over current transformer 300 and convert big electric current to small area analysis, additionally the voltage on circuit is all higher, being breakneck as being directly connected to electric energy meter 600 measurement, current transformer 300 just plays unsteady flow and electrical isolation effect. Current transformer 300 converts high electric current to low current in proportion, and the primary winding of current transformer 300 is connected on high voltage power supply input line 100, and secondary coil connects electric energy meter 600 and negative control terminal 700 etc.
Voltage transformer 400 and transformer ' s type seemingly, are all used to the voltage on conversion line. But transformator voltage of transformation in order that conveying electric energy, therefore capacity is very big. And voltage transformer 400 voltage of transformation be primarily intended to for powering to electric energy meter 600 and negative control terminal 700; for the voltage of measurement circuitry, power and electric energy; or being used for the expensive equipment in protection circuit, motor and transformator when line failure, therefore the capacity of voltage transformer 400 is less. Voltage transformer 400 is mainly made up of primary winding, secondary coil, iron core and insulation, when applying a voltage U1 on primary winding, just produce a magnetic flux in the core, according to the law of electromagnetic induction, in secondary coil, then just produce a secondary voltage U2, changing once or the number of turn of Secondary Winding, it is possible to produce different primary voltages and secondary voltage ratio, this just can form not voltage transformer 400 on year-on-year basis.
Negative control terminal 700 is by the connection with electric energy meter 600, electric energy meter 600 is connected with high voltage power supply input line 100 by current transformer 300, and negative control terminal 700 is by the connection of voltage transformer 400 with high voltage power supply input line 100, the data such as each phase current of high voltage power supply input line 100, each phase voltage, active power, reactive power, power factor, quantity of state and pulsed quantity can be acquired, and the data of collection can be uploaded to main website, and the order that acceptable main website issues, control function accordingly.
When needs simulation height carries out electric energy metrical for low meter mode, low-tension supply input line 200 is connected with the primary winding of current transformer 300, one end of the secondary coil of current transformer 300 is connected with electric energy meter 600 by combined connection box 500, electric energy meter 600 is connected with negative control terminal 700, negative control terminal 700 is connected with the other end of the secondary coil of current transformer 300 by combined connection box 500, current transformer 300, intelligent electric meter and negative control terminal 700 form electric current secondary loop, the electric current that the secondary coil of current transformer 300 produces flows into electric energy meter 600 by one end of the secondary coil of current transformer 300, electric current is flowed into negative control terminal 700 by electric energy meter 600, negative control terminal 700 is by the other end of the secondary coil of electric current inflow current transformer 300.Low-tension supply input line 200 is connected with electric energy meter 600 and negative control terminal 700 respectively by combined connection box 500, forming voltage secondary shunt circuit, power supply low pressure is respectively connected to electric energy meter 600 and negative control terminal 700 by combined connection box 500 by low-tension supply input line 200.
By the annexation of high voltage power supply input line 100, current transformer 300, voltage transformer 400, electric energy meter 600 and negative control terminal 700, form phase three-wire three connected mode, form massive quantity power supply and measurement mode and electric energy is measured. Annexation by low-tension supply input line 200, current transformer 300, electric energy meter 600 and negative control terminal 700, form three-phase and four-line annexation, form height for low meter mode, electric energy to be measured, thus, by above-mentioned electric energy metrical simulation test device, the electric energy metrical simulation of massive quantity power supply and measurement can be carried out, the high electric energy metrical for low meter can be carried out again and simulate.
Specifically, general power system provides three-phase electricity, thus, high voltage power supply input line 100 includes A phase input, B phase input and C phase input, A phase input, B phase input and C phase input all input high pressure, it is high-pressure side, carries out the electric energy metrical of massive quantity power supply and measurement mode by accessing electric power meter in high-pressure side. Low-tension supply input line 200 includes U phase input, V phase input, W phase input and neutral point, U phase input, V phase input and W phase input are high-pressure side and entered the low-pressure side after blood pressure lowering, the winding connection having the transformator of neutral point adopts star-like connection, namely the end of three windings is joined together to form neutral point, identify with N, also referred to as zero line, first section of three windings draws formation U phase input, V phase input and W phase input respectively.
Referring to Fig. 5, wherein in an embodiment, current transformer 300 includes the first current transformer TA1, second current transformer TA2 and the 3rd current transformer TA3, voltage transformer 400 includes the first voltage transformer TV1 and the second voltage transformer TV2, and combined connection box side includes a phase voltage terminal 51, a phase current the first terminal 52, a phase current the second terminal 53, b phase voltage terminal 54, b phase current the first terminal 55, b phase current the second terminal 56, c phase voltage terminal 57, c phase current the first terminal 58, c phase current the second terminal 59 and zero terminal 60, combined connection box opposite side includes a phase voltage the first upper terminal 61, a phase voltage the second upper terminal 62, a phase current the first upper terminal 63, a phase current the second upper terminal 64, b phase voltage the first upper terminal 65, b phase voltage the second upper terminal 66, b phase current the first upper terminal 67, b phase current the second upper terminal 68, c phase voltage the first upper terminal 69, c phase voltage the second upper terminal 70, c phase current the first upper terminal 71, c phase current the second upper terminal 72, zero line the first upper terminal 73 and zero line the second upper terminal 74, electric energy meter includes a phase current input 1, a phase voltage input 2, a phase current outfan 3, b phase current input end 4, b phase voltage input end 5, b phase current outfan 6, c phase current input 7, c phase voltage input 8, c phase current outfan 9, zero line side 10, RS-485 communication interface the first port 11 and RS-485 communication interface the second port 12, negative control terminal includes a phase current upstream end 13, a phase voltage upstream end 14, a phase current outflow end 15, b phase current upstream end 16, b phase voltage upstream end 17, b phase current outflow end 18, c phase current upstream end 19, c phase voltage upstream end 20, c phase current outflow end 21, zero line incoming end 22, RS-485 communication interface the 3rd port 23 and RS-485 communication interface the 4th port 24.
Wherein, RS-485 communication interface first port 11 of electric energy meter 600 is RS-485 communication interface A end, RS-485 communication interface second port 12 of electric energy meter 600 is RS-485 communication interface B end, RS-485 communication interface the 3rd port 23 of negative control terminal 700 is RS-485 communication interface A end, and RS-485 communication interface the 4th port 24 of negative control terminal 700 is RS-485 communication interface B end. By the RS-485 communication interface A end of electric energy meter 600 is connected with the RS-485 communication interface A end of negative control terminal 700, the RS-485 communication interface B end of electric energy meter 600 is connected with the RS-485 communication interface B end of negative control terminal 700, it is achieved the communication between electric energy meter 600 and negative control terminal 700.
When needs simulation massive quantity power supply and measurement mode carries out electric energy metrical, one end of the secondary coil of the first current transformer TA1 is connected with combined connection box side a phase current the first terminal 52, a phase current the first terminal 52 is connected with a phase current the first upper terminal 63 by joining sheet, a phase current the first upper terminal 63 is connected with a phase current input 1 of electric energy meter, the a phase current input 1 of electric energy meter is connected with a phase current outfan 3, a phase current outfan 3 of electric energy meter is connected with a phase current upstream end 13 of negative control terminal, the a phase current upstream end 13 of negative control terminal is connected with a phase current outflow end 15, the a phase current outflow end 15 of negative control terminal is connected with a phase current the second upper terminal 64, a phase current the second upper terminal 64 is connected with a phase current the second terminal 53, the other end of the secondary coil of the first current transformer TA1 is connected with a phase current second terminal 53 of combined connection box side, and first other end ground connection of secondary coil of current transformer TA1.
One end of the secondary coil of the second current transformer TA2 is connected with combined connection box side c phase current the first terminal 58, c phase current the first terminal 58 is connected with c phase current the first upper terminal 71 by joining sheet, c phase current the first upper terminal 71 is connected with the c phase current input 7 of electric energy meter, the c phase current input 7 of electric energy meter is connected with c phase current outfan 9, c phase current outfan 9 of electric energy meter is connected with the c phase current upstream end 19 of negative control terminal, the c phase current upstream end 19 of negative control terminal is connected with c phase current outflow end 21, the c phase current outflow end 21 of negative control terminal is connected with c phase current the second upper terminal 72, c phase current the second upper terminal 72 is connected with c phase current the second terminal 59, the other end of the secondary coil of the second current transformer TA2 is connected with c phase current second terminal 59 of combined connection box side, and second other end ground connection of secondary coil of current transformer TA2.
First voltage transformer TV1 includes first coil L1 and tertiary coil L3, second voltage transformer TV2 includes the second coil L2 and the 4th coil L4, one end of first coil L1 is connected with a phase voltage terminal 51 of combined connection box, a phase voltage terminal 51 is connected with a phase voltage the first upper terminal 61 and a phase voltage the second upper terminal 62 respectively by joining sheet, a phase voltage the first upper terminal 61 is connected with a phase voltage input 2, a phase voltage the second upper terminal 62 is connected with a phase voltage upstream end 14 of negative control terminal, the other end of first coil L1 and one end of the second coil L2 connect and ground connection, the other end of first coil L1 is also connected with b phase voltage terminal 54, b phase voltage terminal 54 is connected with c phase voltage the first upper terminal 69 and b phase voltage the second upper terminal 66 respectively by joining sheet, b phase voltage the first upper terminal 65 is connected with b phase voltage input end 5, b phase voltage the second upper terminal 66 is connected with the b phase voltage upstream end 17 of negative control terminal, the other end of the second coil L2 is connected with the c phase voltage terminal 57 of combined connection box, c phase voltage terminal 57 is connected with c phase voltage the first upper terminal 69 and c phase voltage the second upper terminal 70 respectively by joining sheet, c phase voltage the first upper terminal 69 is connected with c phase voltage input 8, c phase voltage the second upper terminal 70 is connected with the c phase voltage upstream end 20 of negative control terminal, one end of tertiary coil L3 is connected with the A phase input of high voltage power supply input line, the other end is connected with one end of the 4th coil L4 and B phase input respectively, the other end of the 4th coil L4 is connected with C phase input.First port 11 of RS-485 communication interface is connected with the 3rd port 23 of RS-485 communication interface, and the second port 12 of described RS-485 communication interface is connected with the 4th port 24 of RS-485 communication interface.
Wherein, voltage transformer 400 also includes the first high voltage safety tube F1, the second high voltage safety tube F2 and the 3rd high voltage safety tube F3, one end of tertiary coil L3 is connected with the A phase input of high voltage power supply input line 100 by the first high voltage safety tube F1, the other end of tertiary coil L3 is connected with the B phase input of high voltage power supply input line 100 by the second high voltage safety tube F2, and the other end of the 4th coil L4 is connected with the C phase input of high voltage power supply input line 100 by the 3rd high voltage safety tube F3. Protective tube and electric fuse, be a kind of installation in circuit, it is ensured that the electric elements that circuit safety runs; it is also referred to as fuse; protective tube can when current anomaly be increased to certain value, and electric current is cut off in self fusing, thus playing the effect that protection circuit safety runs.
Refer to Fig. 6, in another embodiment, when needs simulation height carries out electric energy metrical for low meter mode, one end of the secondary coil of the first current transformer TA1 is connected with combined connection box side a phase current the first terminal 52, a phase current the first terminal 52 is connected with a phase current the first upper terminal 63 by joining sheet, a phase current the first upper terminal 63 is connected with a phase current input 1 of electric energy meter, the a phase current input 1 of electric energy meter is connected with a phase current outfan 3, a phase current outfan 3 of electric energy meter is connected with a phase current upstream end 13 of negative control terminal, the a phase current upstream end 13 of negative control terminal is connected with a phase current outflow end 15, the a phase current outflow end 15 of negative control terminal is connected with a phase current the second upper terminal 64, a phase current the second upper terminal 64 is connected with a phase current the second terminal 53, the other end of the secondary coil of the first current transformer TA1 is connected with a phase current second terminal 53 of combined connection box side.
One end of the secondary coil of the second current transformer TA2 is connected with combined connection box side c phase current the first terminal 58, c phase current the first terminal 58 is connected with c phase current the first upper terminal 71 by joining sheet, c phase current the first upper terminal 71 is connected with the c phase current input 7 of electric energy meter, the c phase current input 7 of electric energy meter is connected with c phase current outfan 9, c phase current outfan 9 of electric energy meter is connected with the c phase current upstream end 19 of negative control terminal, the c phase current upstream end 19 of negative control terminal is connected with c phase current outflow end 21, the c phase current outflow end 21 of negative control terminal is connected with c phase current the second upper terminal 72, c phase current the second upper terminal 72 is connected with c phase current the second terminal 59, the other end of the secondary coil of the second current transformer TA2 is connected with c phase current second terminal 59 of combined connection box side.
One end of the secondary coil of the 3rd current transformer TA3 is connected with combined connection box side b phase current the first terminal 55, b phase current the first terminal 55 is connected with b phase current the first upper terminal 67 by joining sheet, b phase current the first upper terminal 67 is connected with the b phase current input 4 of electric energy meter, the b phase current input 4 of electric energy meter is connected with b phase current outfan 6, the b phase current outfan 6 of electric energy meter is connected with the b phase current upstream end 16 of negative control terminal, the b phase current upstream end 16 of negative control terminal is connected with b phase current outflow end 18, the b phase current outflow end 18 of negative control terminal is connected with b phase current the second upper terminal 68, b phase current the second upper terminal 68 is connected with b phase current the second terminal 56, the other end of the secondary coil of the 3rd current transformer TA1 is connected with b phase current second terminal 56 of combined connection box side.
The U phase input of low-tension supply input line is connected with a phase voltage terminal 51, a phase voltage terminal 51 is connected with a phase voltage the first upper terminal 61 and a phase voltage the second upper terminal 62 respectively by joining sheet, a phase voltage the first upper terminal 61 is connected with a phase voltage input 2, and a phase voltage the second upper terminal 62 is connected with a phase voltage upstream end 14 of negative control terminal. The V phase input of low-tension supply input line is connected with b phase voltage terminal 54, b phase voltage terminal 54 is connected with c phase voltage the first upper terminal 65 and b phase voltage the second upper terminal 66 respectively by joining sheet, b phase voltage the first upper terminal 65 is connected with b phase voltage input 5, and b phase voltage the second upper terminal 66 is connected with the b phase voltage upstream end 17 of negative control terminal. The W phase input of low-tension supply input line is connected with c phase voltage end 57, c phase voltage terminal 57 is connected with c phase voltage the first upper terminal 69 and c phase voltage the second upper terminal 70 respectively by joining sheet, c phase voltage the first upper terminal 69 is connected with c phase voltage input 8, and c phase voltage the second upper terminal 70 is connected with the c phase voltage upstream end 20 of negative control terminal. Neutral point N is connected with zero terminal 60, zero terminal 60 is connected with zero line the first upper terminal 73 and zero line the second upper terminal 74 respectively by joining sheet, zero line the first upper terminal 73 is connected with the zero line side 10 of electric energy meter, and zero line the second upper terminal 74 is connected with zero line incoming end 22. First port 11 of RS-485 communication interface is connected with the 3rd port 23 of RS-485 communication interface, and the second port 12 of described RS-485 communication interface is connected with the 4th port 24 of RS-485 communication interface.
Please continue to refer to Fig. 1 and Fig. 2, wherein in an embodiment, cabinet 800 is installed and is shaped as cuboid, the length installing cabinet 800 is identical with width, the height of cabinet 800 is installed more than the length installing cabinet 800, install in cabinet 800 and be provided with the first dividing plate and the second partition with the first dividing plate Relative vertical, first dividing plate is parallel with the top installing cabinet 800, second partition is at a stalemate with the top installing cabinet 800, the length of the first dividing plate is identical with the length installing cabinet 800, the width of the first dividing plate is less than the width installing cabinet 800, the length of second partition is identical with the length installing cabinet 800, the height of second partition is less than the height installing cabinet 800, first dividing plate forms L shape with second partition.
Wherein in an embodiment, length and the width of installing cabinet 800 are 800 millimeters, and the height installing cabinet 800 is 1800 millimeters, and the distance between the first dividing plate and base plate is 1000 millimeters, and the height of second partition is 800 millimeters.
Wherein in an embodiment, distance between electric energy meter 600 and negative control terminal 700 is more than or equal to 80 millimeters, electric energy meter 600 and negative control terminal 700 distance respectively and between the top of installation cabinet 800 is more than or equal to 40 millimeters, the combined connection box 500 distance respectively and between electric energy meter 600 and negative control terminal 700 is more than or equal to 150 millimeters, and the distance between combined connection box 500 and bottom is more than or equal to 100 millimeters.
Wherein in an embodiment, the single copper conductor that the wire being connected with a phase current the second terminal 53, a phase current the 3rd terminal 54, b phase current the second terminal 57, b phase current the 3rd terminal 58, c phase current the second terminal 511, c phase current the 3rd terminal 512, a phase current the first upper terminal, a phase current the 3rd upper terminal, b phase current the first upper terminal, b phase current the 3rd upper terminal, c phase current the first upper terminal and c phase current the 3rd upper terminal respectively all adopts sectional area to be 4 square millimeters.The single copper conductor that the wire being connected with a phase voltage terminal 51, b phase voltage terminal 55, c phase voltage terminal 59, a phase voltage the first upper terminal, a phase voltage the second upper terminal, b phase voltage the first upper terminal, b phase voltage the second upper terminal, c phase voltage the first upper terminal, c phase voltage the second upper terminal, zero line side 60, zero line the first upper terminal and zero line the second upper terminal respectively all adopts sectional area to be 2.5 square millimeters.
Each technical characteristic of above example can combine arbitrarily, for making description succinct, all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics is absent from contradiction, all it is considered to be the scope that this specification is recorded.
Above example only have expressed several embodiments of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to this utility model the scope of the claims. It should be pointed out that, for the person of ordinary skill of the art, without departing from the concept of the premise utility, it is also possible to make some deformation and improvement, these broadly fall into protection domain of the present utility model. Therefore, the protection domain of this utility model patent should be as the criterion with claims.
Claims (10)
1. an electric energy metrical simulation test device, it is characterized in that, including installing cabinet, high voltage power supply input line, low-tension supply input line, current transformer, voltage transformer, combined connection box, electric energy meter and negative control terminal, described high voltage power supply input line, described low-tension supply input line, described current transformer, described voltage transformer, described combined connection box, described electric energy meter and described negative control terminal may be contained within described installation cabinet, the first dividing plate and the second partition with described first dividing plate Relative vertical it is additionally provided with in described installation cabinet, described second partition is at a stalemate with the top of described installation cabinet, by the cooperation of described first dividing plate and described second partition, spatial separation in described installation cabinet is become first area, second area and the 3rd region, described first area and described second area lay respectively at the both sides of described second partition, described second area and described 3rd regional connectivity,
Described combined connection box, described electric energy meter and described negative control terminal are placed in the side of described second partition, it is positioned at described first area, and described electric energy meter and described negative control terminal are between the top and described combined connection box of described installation cabinet, described combined connection box is between described electric energy meter and described first dividing plate, described low-tension supply input line is placed in the opposite side of described second partition, and it is positioned at described second area, described current transformer is placed in the bottom of described installation cabinet, described voltage transformer is placed in the sidewall that described installation cabinet is relative with described second partition opposite side, and described voltage transformer is near the bottom of described installation cabinet, described current transformer, described voltage transformer and described high voltage power supply input line are respectively positioned in described 3rd region.
2. electric energy metrical simulation test device according to claim 1, it is characterized in that, when needs simulation massive quantity power supply and measurement mode carries out electric energy metrical, described high voltage power supply input line is connected with the primary winding of described current transformer, one end of the secondary coil of described current transformer is connected with described electric energy meter by described combined connection box, described electric energy meter is connected with described negative control terminal, described negative control terminal is connected with the other end of the secondary coil of described current transformer by described combined connection box, and the other end ground connection of the secondary coil of described current transformer, the secondary coil of described current transformer, described electric energy meter and described negative control terminal form electric current secondary loop, the electric current that the secondary coil of described current transformer produces flows into described electric energy meter by one end of the secondary coil of described current transformer, described electric current is flowed into described negative control terminal by described electric energy meter, described electric current is flowed into the other end of the secondary coil of described current transformer by described negative control terminal,The primary winding of described voltage transformer is connected with described high voltage power supply input line, the secondary coil of described voltage transformer is connected with described electric energy meter and negative control terminal respectively by described combined connection box, form voltage secondary shunt circuit, the primary winding of described voltage transformer receives power supply high pressure, and the secondary coil of described voltage transformer produces voltage and described voltage separately flows into described electric energy meter and described negative control terminal.
3. electric energy metrical simulation test device according to claim 1, it is characterized in that, when needs simulation height carries out electric energy metrical for low meter mode, described low-tension supply input line is connected with the primary winding of described current transformer, one end of the secondary coil of described current transformer is connected with described electric energy meter by described combined connection box, described electric energy meter is connected with described negative control terminal, described negative control terminal is connected with the other end of the secondary coil of described current transformer by described combined connection box, described current transformer, described electric energy meter and described negative control terminal form electric current secondary loop, the electric current that the secondary coil of described current transformer produces flows into described electric energy meter by one end of the secondary coil of described current transformer, described electric current is flowed into described negative control terminal by described electric energy meter, described electric current is flowed into the other end of the secondary coil of described current transformer by described negative control terminal, described low-tension supply input line is connected with described electric energy meter and negative control terminal respectively by described combined connection box, forming voltage secondary shunt circuit, power supply low pressure is respectively connected to described electric energy meter and described negative control terminal by described combined connection box by described low-tension supply input line.
4. electric energy metrical simulation test device according to claim 1, it is characterised in that described high voltage power supply input line includes A phase input, B phase input and C phase input.
5. electric energy metrical simulation test device according to claim 4, it is characterised in that described current transformer includes the first current transformer, second current transformer and the 3rd current transformer, described voltage transformer includes the first voltage transformer and the second voltage transformer, and described combined connection box side includes a phase voltage terminal, a phase current the first terminal, a phase current the second terminal, b phase voltage terminal, b phase current the first terminal, b phase current the second terminal, c phase voltage terminal, c phase current the first terminal, c phase current the second terminal and zero terminal, described combined connection box opposite side includes a phase voltage the first upper terminal, a phase voltage the second upper terminal, a phase current the first upper terminal, a phase current the second upper terminal 64, b phase voltage the first upper terminal, b phase voltage the second upper terminal, b phase current the first upper terminal, b phase current the second upper terminal, c phase voltage the first upper terminal, c phase voltage the second upper terminal, c phase current the first upper terminal, c phase current the second upper terminal, zero line the first upper terminal and zero line the second upper terminal, described electric energy meter includes a phase current input, a phase voltage input, a phase current outfan, b phase current input, b phase voltage input, b phase current outfan, c phase current input, c phase voltage input, c phase current outfan, zero line side, RS-485 communication interface the first port and RS-485 communication interface the second port, described negative control terminal includes a phase current upstream end, a phase voltage upstream end, a phase current outflow end, b phase current upstream end, b phase voltage upstream end, b phase current outflow end, c phase current upstream end, c phase voltage upstream end, c phase current outflow end, zero line incoming end, RS-485 communication interface the 3rd port and RS-485 communication interface the 4th port,
When needs simulation massive quantity power supply and measurement mode carries out electric energy metrical, one end of the secondary coil of described first current transformer is connected with a phase current the first terminal described in described combined connection box side, described a phase current the first terminal is connected with described a phase current the first upper terminal by joining sheet, described a phase current the first upper terminal is connected with the described a phase current input of described electric energy meter, the described a phase current input of described electric energy meter is connected with described a phase current outfan, the described a phase current lead-out terminal of described electric energy meter is connected with the described a phase current upstream end of described negative control terminal, the described a phase current upstream end of described negative control terminal is connected with described a phase current outflow end, the described a phase current outflow end of described negative control terminal is connected with described a phase current the second upper terminal, described a phase current the second upper terminal is connected with described a phase current the second terminal, the other end of the secondary coil of described first current transformer is connected with described a phase current second terminal of described combined connection box side, and the other end ground connection of the secondary coil of described first current transformer,
One end of the secondary coil of described second current transformer is connected with c phase current the first terminal described in described combined connection box side, described c phase current the first terminal is connected with described c phase current the first upper terminal by joining sheet, described c phase current the first upper terminal is connected with the described c phase current input of described electric energy meter, the described c phase current input of described electric energy meter is connected with described c phase current outfan, the described c phase current lead-out terminal of described electric energy meter is connected with the described c phase current upstream end of described negative control terminal, the described c phase current upstream end of described negative control terminal is connected with described c phase current outflow end, the described c phase current outflow end of described negative control terminal is connected with described c phase current the second upper terminal, described c phase current the second upper terminal is connected with described c phase current the second terminal, the other end of the secondary coil of described second current transformer is connected with described c phase current second terminal of described combined connection box side, and the other end ground connection of the secondary coil of described second current transformer,
Described first voltage transformer includes first coil and tertiary coil, described second voltage transformer includes the second coil and the 4th coil, one end of described first coil is connected with the described a phase voltage terminal of described combined connection box, described a phase voltage terminal is connected with described a phase voltage the first upper terminal and described a phase voltage the second upper terminal respectively by joining sheet, described a phase voltage the first upper terminal is connected with described a phase voltage input, described a phase voltage the second upper terminal is connected with the described a phase voltage upstream end of described negative control terminal, the other end of described first coil is connected with one end of described second coil and ground connection, the other end of described first coil is also connected with described b phase voltage terminal, described b phase voltage terminal is connected with described c phase voltage the first upper terminal and described b phase voltage the second upper terminal respectively by joining sheet, described b phase voltage the first upper terminal is connected with described b phase voltage input, described b phase voltage the second upper terminal is connected with the described b phase voltage upstream end of described negative control terminal, the other end of described second coil is connected with the described c phase voltage terminal of described combined connection box, described c phase voltage terminal is connected with described c phase voltage the first upper terminal and described c phase voltage the second upper terminal respectively by joining sheet, described c phase voltage the first upper terminal is connected with described c phase voltage input, described c phase voltage the second upper terminal is connected with the described c phase voltage upstream end of described negative control terminal, one end of described tertiary coil is connected with the described A phase input of described high voltage power supply input line, the other end is connected with one end of described 4th coil and described B phase input respectively, the other end of described 4th coil is connected with described C phase input,First port of described RS-485 communication interface is connected with the 3rd port of described RS-485 communication interface, and the second port of described RS-485 communication interface is connected with the 4th port of described RS-485 communication interface.
6. electric energy metrical simulation test device according to claim 5, it is characterized in that, described voltage transformer also includes the first high voltage safety tube, second high voltage safety tube and the 3rd high voltage safety tube, one end of described tertiary coil is connected with the described A phase input of described high voltage power supply input line by described first high voltage safety tube, the other end of described tertiary coil is connected with the described B phase input of described high voltage power supply input line by described second high voltage safety tube, the other end of described 4th coil is connected with the described C phase input of described high voltage power supply input line by described 3rd high voltage safety tube.
7. electric energy metrical simulation test device according to claim 5, it is characterised in that described low-tension supply input line includes U phase input, V phase input, W phase input and neutral point.
8. electric energy metrical simulation test device according to claim 7, it is characterized in that, when needs simulation height carries out electric energy metrical for low meter mode, one end of the secondary coil of described first current transformer is connected with a phase current the first terminal described in described combined connection box side, described a phase current the first terminal is connected with described a phase current the first upper terminal by joining sheet, described a phase current the first upper terminal is connected with the described a phase current input of described electric energy meter, the described a phase current input of described electric energy meter is connected with described a phase current outfan, the described a phase current lead-out terminal of described electric energy meter is connected with the described a phase current upstream end of described negative control terminal, the described a phase current upstream end of described negative control terminal is connected with described a phase current outflow end, the described a phase current outflow end of described negative control terminal is connected with described a phase current the second upper terminal, described a phase current the second upper terminal is connected with described a phase current the second terminal, the other end of the secondary coil of described first current transformer is connected with described a phase current second terminal of described combined connection box side,
One end of the secondary coil of described second current transformer is connected with c phase current the first terminal described in described combined connection box side, described c phase current the first terminal is connected with described c phase current the first upper terminal by joining sheet, described c phase current the first upper terminal is connected with the described c phase current input of described electric energy meter, the described c phase current input of described electric energy meter is connected with described c phase current outfan, the described c phase current lead-out terminal of described electric energy meter is connected with the described c phase current upstream end of described negative control terminal, the described c phase current upstream end of described negative control terminal is connected with described c phase current outflow end, the described c phase current outflow end of described negative control terminal is connected with described c phase current the second upper terminal, described c phase current the second upper terminal is connected with described c phase current the second terminal, the other end of the secondary coil of described second current transformer is connected with described c phase current second terminal of described combined connection box side,
One end of the secondary coil of described 3rd current transformer is connected with b phase current the first terminal described in described combined connection box side, described b phase current the first terminal is connected with described b phase current the first upper terminal by joining sheet, described b phase current the first upper terminal is connected with the described b phase current input of described electric energy meter, the described b phase current input of described electric energy meter is connected with described b phase current outfan, the described b phase current lead-out terminal of described electric energy meter is connected with the described b phase current upstream end of described negative control terminal, the described b phase current upstream end of described negative control terminal is connected with described b phase current outflow end, the described b phase current outflow end of described negative control terminal is connected with described b phase current the second upper terminal, described b phase current the second upper terminal is connected with described b phase current the second terminal, the other end of the secondary coil of described 3rd current transformer is connected with described b phase current second terminal of described combined connection box side,
The described U phase input of described low-tension supply input line is connected with described a phase voltage terminal, described a phase voltage terminal is connected with described a phase voltage the first upper terminal and described a phase voltage the second upper terminal respectively by joining sheet, described a phase voltage the first upper terminal is connected with described a phase voltage input, described a phase voltage the second upper terminal is connected with the described a phase voltage upstream end of described negative control terminal, the described V phase input of described low-tension supply input line is connected with described b phase voltage terminal, described b phase voltage terminal is connected with described c phase voltage the first upper terminal and described b phase voltage the second upper terminal respectively by joining sheet, described b phase voltage the first upper terminal is connected with described b phase voltage input, described b phase voltage the second upper terminal is connected with the described b phase voltage upstream end of described negative control terminal, the described W phase input of described low-tension supply input line is connected with described c phase voltage the first upper terminal and described c phase voltage the second upper terminal, described c phase voltage the first upper terminal is connected with described c phase voltage input, described c phase voltage the second upper terminal is connected with the described c phase voltage upstream end of described negative control terminal, described neutral point is connected with described zero terminal, described zero terminal is connected with described zero line the first upper terminal and described zero line the second upper terminal respectively by joining sheet, described zero line the first upper terminal is connected with the described zero line side of described electric energy meter, described zero line the second upper terminal is connected with described zero line incoming end, first port of described RS-485 communication interface is connected with the 3rd port of described RS-485 communication interface, and the second port of described RS-485 communication interface is connected with the 4th port of described RS-485 communication interface.
9. electric energy metrical simulation test device according to claim 8, it is characterized in that, respectively with described a phase current the second terminal, described a phase current the 3rd terminal, described b phase current the second terminal, described b phase current the 3rd terminal, described c phase current the second terminal, described c phase current the 3rd terminal, described a phase current the first upper terminal, described a phase current the 3rd upper terminal, described b phase current the first upper terminal, described b phase current the 3rd upper terminal, the single copper conductor that the wire that described c phase current the first upper terminal and described c phase current the 3rd upper terminal connect adopts sectional area to be 4 square millimeters.
10. electric energy metrical simulation test device according to claim 8, it is characterized in that, the single copper conductor that the wire being connected with described a phase voltage terminal, b phase voltage terminal, c phase voltage terminal, a phase voltage the first upper terminal, a phase voltage the second upper terminal, b phase voltage the first upper terminal, b phase voltage the second upper terminal, c phase voltage the first upper terminal, c phase voltage the second upper terminal, described zero terminal, described zero line the first upper terminal and described zero line the second upper terminal respectively adopts sectional area to be 2.5 square millimeters.
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| CN201520978998.2U CN205302779U (en) | 2015-11-30 | 2015-11-30 | Electric energy measurement analogue test device |
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| CN108847078A (en) * | 2018-06-08 | 2018-11-20 | 国家电网有限公司 | A kind of dress table connects electric training system |
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