CN203673059U - Three-phase electric energy meter simulation system - Google Patents
Three-phase electric energy meter simulation system Download PDFInfo
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- CN203673059U CN203673059U CN201320886457.8U CN201320886457U CN203673059U CN 203673059 U CN203673059 U CN 203673059U CN 201320886457 U CN201320886457 U CN 201320886457U CN 203673059 U CN203673059 U CN 203673059U
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- 238000004088 simulation Methods 0.000 title claims abstract description 48
- 238000012545 processing Methods 0.000 claims abstract description 57
- 238000005070 sampling Methods 0.000 claims abstract description 20
- 238000004891 communication Methods 0.000 claims abstract description 13
- 230000005611 electricity Effects 0.000 claims abstract description 6
- 230000006870 function Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000012549 training Methods 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000013456 study Methods 0.000 description 2
- 208000033999 Device damage Diseases 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Abstract
The utility model discloses a three-phase electric energy meter simulation system which comprises a simulated electric energy meter and a host computer. The simulated electric energy meter is connected with the host computer via a communication interface. The simulated electric energy meter comprises a sampling module, the sampling module is used for collecting electricity information of circuits, the output end of the sampling module is connected with the input end of a metering module, the metering module is connected with the signal input end of a central processing module via a switching circuit, a first pin of the central processing circuit is connected with a clock unit, a second pin of the central processing circuit is connected with an operation display unit, a third pin of the central processing circuit is connected with the communication interface, a fourth pin of central processing circuit is connected with a storage unit, a fifth pin of the central processing unit is connected with a brake opening/closing simulation relay, the input end of a pulse control module is connected with the output ends of the metering module and the central processing module, the output end of the pulse control module is connected with a pulse simulated lamp, and a power supply module supplies power for the whole system.
Description
Technical field
The utility model relates to a kind of analogue system, relates in particular to a kind of three-phase electric energy meter analogue system.
Background technology
Along with deepening continuously of electricity market process, power industry is being faced with unprecedented opportunities and challenge.In order to ensure the high reliability of electric system, electric power enterprise need to strictly detect the links of system.
At present, when Utilities Electric Co. gives training and examines for electric energy meter appraiser, all use real electric energy meter and calibration equipment, and continue to use traditional papery examination paper and carry out theory examination.In the process of examination, practical operation need to directly access electrical network by electric energy meter and verification system, the damage of equipment causes the raising of the wasting of resources and training cost because testing person's maloperation or operation lack of standardization can cause; The problems such as meanwhile, traditional theory examination mode also exists Assessment dullness, the cycle is long, exercise question is outmoded and mark efficiency.
Utility model content
The purpose of this utility model is to provide a kind of three-phase electric energy meter analogue system, for power industry personnel's study, training, test provide good analogue system, can be safely, efficiently, carry out easily the simulation operations of three-phase electric energy meter, reduce device damage rate, reduce the wasting of resources.
The technical solution adopted in the utility model is:
A kind of three-phase electric energy meter analogue system, comprise simulation electric energy meter and host computer, simulation electric energy meter connects host computer by communication interface, simulation electric energy meter comprises sampling module, metering module, commutation circuit, central processing module and power module, sampling module is used for gathering line electricity information, the output terminal of acquisition module connects the input end of metering module, metering module connects the signal input part of central processing module by commutation circuit, the first pin of central processing module connects clock unit, the second pin attended operation display unit of central processing module, the 3rd pin connecting communication interface of central processing module, the 4th pin of central processing module connects storage unit, the 5th pin of central processing module connects switching on emulation relay, also comprise pulse control module, the input end of pulse control module connects respectively the output terminal of metering module and central processing module, the output terminal of pulse control module connects pulse emulation lamp, power module is whole system power supply.
Described switching on emulation relay adopts external, is arranged at simulation electric energy meter outside.
Described sampling module comprises current transformer and sampling resistor, and current transformer and sampling resistor gather respectively line current, information of voltage.
Described clock unit comprises clock circuit and delivery port, and clock circuit is connected respectively central processing module with delivery port.
Described operation display unit comprises LCDs and button, and the output terminal of button connects central processing module, and the input end of LCDs connects central processing module.
Described communication interface adopts RS485 interface.
The utility model carries out three-phase simulation ammeter by commutation circuit the switching of true and emulation, and in the time that needs truly measure, commutation circuit is connected metering module and central processing module, realizes metering truly; In the time of needs simulation operations, commutation circuit disconnects metering module and central processing module, utilize host computer to connect central processing module by communication interface, thereby complete the simulated actions of three-phase electric energy meter, for power industry personnel's study, training, test provide good analogue system, and can be safely, efficiently, carry out easily the simulation operations of three-phase electric energy meter.
Brief description of the drawings
Fig. 1 is schematic block circuit diagram of the present utility model.
Embodiment
As shown in Figure 1, the utility model comprises simulation electric energy meter and host computer, simulation electric energy meter connects host computer by communication interface, simulation electric energy meter sampling module, metering module, commutation circuit, central processing module and power module, sampling module comprises current transformer and sampling resistor, current transformer and sampling resistor gather respectively line current, information of voltage, the output terminal of current transformer and sampling resistor is connected the input end of metering module, metering module connects the signal input part of central processing module by commutation circuit, the first pin of central processing module connects clock unit, clock unit comprises clock circuit and delivery port, the second pin attended operation display unit of central processing module, operation display unit comprises LCDs and button, the output terminal of button connects central processing module, the input end of LCDs connects central processing module, the 3rd pin connecting communication interface of central processing module, communication interface connects host computer, the 4th pin of central processing module connects memory module, the 5th pin of central processing module connects switching on emulation relay, also comprise pulse control module, the input end of pulse control module connects respectively the output terminal of metering module and central processing module, the output terminal of pulse control module connects pulse emulation lamp, power module is whole system power supply.
Be elaborated for three-phase electric energy meter analogue system described in the utility model below:
Three-phase electric energy meter analogue system described in the utility model can realize real function of measuring, dividing potential drop mode by sampling resistor realizes voltage sample, gather current information by current transformer, numerical value is processed and preserved to the chip that sampling numerical value is flowed in metering module.In the time that needs truly measure, central processing module is connected metering module by controlling commutation circuit, to computation chip transmitted signal, now computation chip passes to central processing module by the data of preservation by output terminal, central processing module calculates data with different rates, numerical value is passed to display section, and show in LCDs.Wherein, commutation circuit can adopt relay to realize, by the on off operating mode of central processing module pilot relay;
Central processing module is realized duty and the zero clearing action of computation chip by signal port to the control of computation chip.True function of measuring and existing three-phase electric energy meter function of measuring roughly the same, belong to prior art, and in this not go into detail.
Three-phase electric energy meter analogue system described in the utility model can realize the function of measuring of analogue simulation, and emulation is measured as electrical parameter is manually set, and is established into data by host computer, transmits by the communication interface (RS485 interface) of simulation electric energy meter; When simulation electric energy meter is during in simulation status, simulation electric energy meter is completely in copying, cut off being communicated with between metering module and central processing module by commutation circuit, close the actual metered of metering module, now simulation electric energy meter is not subject to the impact of metering module actual metered completely, state in the time that education experiment needs analogue simulation, can carry out the phenomenon emulation that substantially can not occur in many reality such as mistake to the overflowing of the successively decreasing of electric weight, electric weight, electric weight; Emulation personnel arrange data by host computer, pass to central processing module, and central processing module is processed its data, then numerical value is passed to display unit, on liquid crystal display, shows.
The stealing electricity phenomenon successively decreasing with electric weight below carries out emulation, and process is as follows:
Switch simulation electric energy meter by host computer and enter simulation model, now, simulation electric energy meter makes metering module not be subject to central processing module control by commutation circuit, PC control simulation electric energy meter produces an electric energy value A, and can be by simulation electric energy meter liquid crystal display out, student can clearly view A electric weight by button; After one minute, PC control simulation electric energy meter produces another electric energy value B (B<A), and can be by simulation electric energy meter liquid crystal display out, and student can clearly view B electric weight by button; Student, by the comparison of 2 electric weight, can be clear that electric weight is successively decreasing, and this belongs to electricity filching behavior in reality, particularly on stem-winder, is easy to occur.PC control simulation electric energy meter is exactly the central processing module that host computer connects simulation electric energy meter, belongs to prior art, is not again repeating.
In the time switching to true metering by emulation metering, truly measure by upper computer selecting, now central processing module is to metering module with reset signal, and metering module will restart metering, and with certain hour interval, numerical value be passed to central processing module.
Three-phase electric energy meter analogue system described in the utility model has been cancelled the built-in relay of existing electric energy meter, the substitute is external switching on emulation relay.Because simulation electric energy meter can use on emulation stage body, emulation stage body, for simulation electric energy meter provides electric energy, meanwhile, can be used as tie and makes simulation electric energy meter connect host computer.Although built-in relay can make simulation electric energy meter power down truly, but can cause the current interruption of emulation stage body, cause the warning of whole stage body, be not suitable for the instructional function of emulation stage body, and employing external relay switch, can simulate whole operating a switch and the state closing a floodgate, and can really not damage to some extent emulation stage body, and can in delivery port, there is relay switch State-output, operating a switch can be by instrument actual measurement delivery port energy states such as logical multimeters with the state closing a floodgate, and gives student one and is familiar with more intuitively.
The utility model can emulation pulse situation, at simulation electric energy meter during in true function of measuring, flashlight is subject to metering module control, metering module sends to emulation flashlight signal by the pulse situation of truly metering by pulse control module, send real pulse by the actual conditions of true metering, can see that emulation flashlight normally glimmers.When in simulation status lower time, emulation flashlight is directly controlled by central processing module, can require to send by host computer according to user the pulse of any frequency of wanting, fast and slow, the electric energy that facilitate student to understand more really electric energy metrical stop walking and the difference of flying away.
Fast, the slow phenomenon simulation process of electric energy metrical is as follows:
Enter simulation model by PC control simulation electric energy meter, now, simulation electric energy meter makes metering module not be subject to central processing module control by commutation circuit, and simulation electric energy meter is by the direct gating pulse output of I/O mouth of central processing module simultaneously; For example, PC control simulation electric energy meter produces a pulse for every 1 second and exports, and can clearly observe emulation flashlight and glimmer every 1 second; Afterwards, host computer is controlled every 10 seconds of simulation electric energy meter again and is produced a pulse and export, and can clearly observe the flicker of emulation flashlight slack-off, means that electric energy metrical has good luck slowly; Finally, PC control simulation electric energy meter flashlight Chang Liang, can clearly observe emulation flashlight and no longer glimmer, and means that electric energy metrical has good luck very soon, to such an extent as to flashlight has little time flicker, and shows normal bright state
Clock circuit of the present utility model is existing mature technology, does not repeat them here.
Claims (6)
1. a three-phase electric energy meter analogue system, it is characterized in that: comprise simulation electric energy meter and host computer, simulation electric energy meter connects host computer by communication interface, simulation electric energy meter comprises sampling module, metering module, commutation circuit, central processing module and power module, sampling module is used for gathering line electricity information, the output terminal of acquisition module connects the input end of metering module, metering module connects the signal input part of central processing module by commutation circuit, the first pin of central processing module connects clock unit, the second pin attended operation display unit of central processing module, the 3rd pin connecting communication interface of central processing module, the 4th pin of central processing module connects storage unit, the 5th pin of central processing module connects switching on emulation relay, also comprise pulse control module, the input end of pulse control module connects respectively the output terminal of metering module and central processing module, the output terminal of pulse control module connects pulse emulation lamp, power module is whole system power supply.
2. three-phase electric energy meter analogue system according to claim 1, is characterized in that: described switching on emulation relay adopts external, is arranged at simulation electric energy meter outside.
3. three-phase electric energy meter analogue system according to claim 2, is characterized in that: described sampling module comprises current transformer and sampling resistor, current transformer and sampling resistor gather respectively line current, information of voltage.
4. three-phase electric energy meter analogue system according to claim 3, is characterized in that: described clock unit comprises clock circuit and delivery port, clock circuit is connected respectively central processing module with delivery port.
5. three-phase electric energy meter analogue system according to claim 4, is characterized in that: described operation display unit comprises LCDs and button, and the output terminal of button connects central processing module, and the input end of LCDs connects central processing module.
6. three-phase electric energy meter analogue system according to claim 5, is characterized in that: described communication interface adopts RS485 interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320886457.8U CN203673059U (en) | 2013-12-31 | 2013-12-31 | Three-phase electric energy meter simulation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320886457.8U CN203673059U (en) | 2013-12-31 | 2013-12-31 | Three-phase electric energy meter simulation system |
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| CN203673059U true CN203673059U (en) | 2014-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320886457.8U Expired - Lifetime CN203673059U (en) | 2013-12-31 | 2013-12-31 | Three-phase electric energy meter simulation system |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108008339A (en) * | 2017-11-16 | 2018-05-08 | 深圳市科陆电子科技股份有限公司 | The method for parameter configuration of virtual electric energy meter and virtual electric energy meter |
| CN108398594A (en) * | 2018-03-08 | 2018-08-14 | 广西网冠电气有限公司 | A kind of intelligent simulation three-phase electric energy meter |
-
2013
- 2013-12-31 CN CN201320886457.8U patent/CN203673059U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108008339A (en) * | 2017-11-16 | 2018-05-08 | 深圳市科陆电子科技股份有限公司 | The method for parameter configuration of virtual electric energy meter and virtual electric energy meter |
| CN108398594A (en) * | 2018-03-08 | 2018-08-14 | 广西网冠电气有限公司 | A kind of intelligent simulation three-phase electric energy meter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210830 Address after: 450000 third floor, power instrument building, No. 85, Fifth Street, Zhengzhou area (Economic Development), Henan free trade Experimental Zone, Zhengzhou City, Henan Province Patentee after: Zhengzhou Sanhui Electronic Technology Co.,Ltd. Address before: 450000 No. 85, Fifth Street, economic and Technological Development Zone, Zhengzhou City, Henan Province Patentee before: ZHENGZHOU SMS ELECTRIC Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140625 |