CN201819951U - Digital high-voltage metering device and metering system thereof - Google Patents
Digital high-voltage metering device and metering system thereof Download PDFInfo
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- CN201819951U CN201819951U CN2010205613875U CN201020561387U CN201819951U CN 201819951 U CN201819951 U CN 201819951U CN 2010205613875 U CN2010205613875 U CN 2010205613875U CN 201020561387 U CN201020561387 U CN 201020561387U CN 201819951 U CN201819951 U CN 201819951U
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Abstract
The utility model provides a digital high-voltage metering device, comprising a high-voltage side part and a low-voltage side part, wherein the high-voltage side part comprises a central processing unit, an electronic current transformer, a first voltage sensor, a first switch power supply and a high-voltage electrical display device; and the low-voltage side part comprises a gauge head, a second switch power supply for a communication manager and a communication terminal. In the utility model, by regulating voltage and current signals and matching with the central processing unit, the metering and processing of electric energy on the high-voltage side are realized, primary equipment can be intelligentized; communication can be directly carried out on the low-voltage side by using the voltmeter head or related display devices so as to display the metering results, therefore, the measurement error is avoided; furthermore, by adopting the structure and the matched related elements, the whole volume of the metering device can be greatly reduced; and the installation and debugging can be extremely convenient.
Description
Technical field
The utility model relates to the electric power meter in a kind of high-voltage fence, especially a kind of digital high pressure measurement device.
Background technology
The conventional high-tension electric power meter that uses in the present power distribution network, it all is cabinet style, therefore be also referred to as high-voltage metering cubicle, its common structure is all combined by high voltage potential transformer, high-tension current inductor and electric energy meter, wherein high tension voltage, current transformer are positioned at the isolated area of primary equipment and secondary device, be used for high tension voltage, electric current are converted into low voltage voltage, electric current, electric energy meter then is located in the secondary device, be used for voltage, electric current are carried out data acquisition, finally realize the metering and the demonstration of electric energy.In the existing measuring apparatus, voltage current transformer generally all adopts electromagnetic type, volume and weight is all bigger, and the electric energy meter that is connected, must be the intelligent meter of high-power interface, and be arranged at secondary device, can finish corresponding metering, demonstration work, corresponding cost is also higher, and may cause that the link of measuring error is also many, and in metering cabinet, each components and parts assembly, all convenient inadequately, it is comparatively too fat to move that the structure of whole metering cabinet also can seem, be not convenient for installation, debugging, use also to seem convenient inadequately.
Summary of the invention
The purpose of this utility model is to provide a kind of structure more reasonable, and volume is littler, and is convenient to the digital high pressure measurement device that assembles, debug.
The utility model is that the technical scheme that its technical matters of solution is adopted is:
Digital high pressure measurement device comprises:
The CPU (central processing unit) that is used for electric energy metrical;
The electronic current mutual inductor that is connected with high-voltage power line, this electronic current mutual inductor is connected with CPU (central processing unit) by current signal conditioning unit;
First voltage sensor that is connected with high-voltage power line, this first voltage sensor is connected with central CPU (central processing unit) by voltage signal conditioning unit;
Nurse one's health first Switching Power Supply that unit, voltage signal conditioning unit and CPU (central processing unit) are connected with current signal respectively; And
The high voltage display device that is connected with high-voltage power line;
Described low-pressure side comprises:
Be used to connect the gauge outfit and the communications manager of gauge outfit and communication apparatus, this gauge outfit is connected with CPU (central processing unit) by isolating communication unit with communications manager;
The second switch power supply that connects gauge outfit and communications manager; And
The communicating terminal that connects gauge outfit and communications manager.
Above-mentioned high voltage display device comprises second voltage sensor that is connected with high-voltage power line and the high-voltage charge display device that is connected with second voltage sensor.
Above-mentioned first voltage sensor is the resistor-type voltage sensor.
Above-mentioned second voltage sensor is the capacitor type voltage sensor.
The applied system of digital high voltage measuring apparatus, it comprises above-mentioned digital high voltage measuring apparatus, also comprises secondary device, wherein this secondary device comprises:
Be used to connect the gauge outfit and the communications manager of gauge outfit and communication apparatus, this gauge outfit is connected with CPU (central processing unit) by isolating communication unit with communications manager;
The second switch power supply that connects gauge outfit and communications manager; And
The communicating terminal that connects gauge outfit and communications manager.
The beneficial effects of the utility model are: the utility model adopts the mutual inductor of electronic type, pass through voltage, the conditioning of current signal and the cooperation of CPU (central processing unit), realized in primary system, directly being provided with the scheme of Low-voltage Electronic equipment, can directly in primary system, directly carry out electric energy metrical and processing, with the primary equipment intellectuality, volume with seasonal equipment is also less, the utility model is when cooperating secondary device to use, re-use the isolation communication unit and realize electrical isolation, simultaneously, secondary device can directly carry out communication with ammeter gauge outfit or related display apparatus and show the metering result, avoided measuring error, and cooperate structure of the present utility model and relevant components and parts, can make that overall volume reduces greatly, install, debug all very convenient.
Description of drawings
Further specify below in conjunction with the drawings and specific embodiments:
Fig. 1 is a functional-block diagram of the present utility model;
Fig. 2 is the schematic block diagram of a kind of embodiment of the utility model.
Embodiment
With reference to Fig. 1, digital high pressure measurement device provided by the utility model, mainly comprise the CPU (central processing unit) 3 that is used for electric energy metrical, the electronic current mutual inductor 1 that is connected with high-voltage power line, first voltage sensor 2 that is connected with high-voltage power line, the high voltage display device 5 and first Switching Power Supply 4, wherein, electronic current mutual inductor 1 is used for current sample, desirable a plurality of each bar phase line that connects high voltage bus respectively, and be connected with CPU (central processing unit) 3 by current signal conditioning unit 11 respectively, to gather the coherent signal of electronic current mutual inductor 1 to finish corresponding metering by CPU (central processing unit) 3; First voltage sensor 2 is used for voltage sample, be positioned at the high-pressure side one time owing to CPU (central processing unit) 3 in the utility model, same get a plurality of each bar phase line that connects high voltage bus respectively, and be connected with CPU (central processing unit) 3 by voltage signal conditioning unit 21 respectively, as optimal way, first voltage sensor 2 can adopt the resistor-type voltage sensor, the electronic type dividing potential drop substitutes traditional electromagnetic transformer, primary voltage can be converted into 10V with interior micro-signal, to satisfy the requirement of directly supplying with CPU (central processing unit) 3, and it is little that the resistor-type voltage sensor also possesses volume, and advantages such as transmission frequency bandwidth are suitable for measuring apparatus of the present utility model and use; High voltage display device 5 is used to react the high tension loop charged state, can directly be connected with high-voltage power line; First Switching Power Supply 4, is connected with current signal conditioning unit 11, voltage signal conditioning unit 21 and CPU (central processing unit) 3 and high voltage display device 5 respectively on circuit connects for providing stable power for each components and parts.
As shown in FIG., the secondary device that is cooperated in the utility model use uses, become perfect metering system, wherein, once on high-tension side digital high voltage measuring apparatus, must carry out electrical isolation with secondary device, typical, secondary device mainly is made up of gauge outfit and communications manager 6, second switch power supply 8 and communicating terminal 9.Secondary device needs and the digital high pressure measurement device of primary equipment carries out electrical isolation, the utility model adopts isolation communication unit 7 to realize, wherein gauge outfit is connected with CPU (central processing unit) 3 by isolating communication unit 7 with communications manager 6, with the high-pressure side electrical isolation in extract the metering signal of CPU (central processing unit) 3, the utility model preferably can adopt photoisolator cheaply, realizes as crystal head; Same, second switch power supply 8 is connected with communications manager 6 with gauge outfit, with the control of being correlated with as power supply; The secondary device ammeter gauge outfit of can directly pegging graft shows relevant metering result, also can pass through other modes, connect, therefore need possess communicating terminal 9 as radio communication, this communicating terminal 9 connects gauge outfit and communications manager 6, to use as the terminal of output, input.
In the utility model, high voltage display device 5 comprises second voltage sensor 51 that is connected with high-voltage power line and the high-voltage charge display device 52 that is connected with second voltage sensor 51, second voltage sensor 51 wherein is preferably the capacitive voltage sensor, be suitable for the electric system of 10KV, possesses higher precision, and simple in structure, volume is little, is suitable for using in switch cubicle.
As shown in Figure 2, be applied to the embodiment in the electric system of 10KV three-phase alternating current for the utility model, the three-phase bus that has 10KV in this electric system, device of the present utility model has resistor-type voltage sensor 2 respectively, electronic current mutual inductor 1 and capacitor type voltage sensor 51 are installed on each phase bus, wherein three resistor-type voltage sensors 2 are gathered three-phase voltage signal, be transferred to CPU (central processing unit) 3 through voltage signal conditioning unit 21 and carry out the correspondent voltage metering, three 1 of electronic current mutual inductors are gathered three-phase electricity respectively and are stayed signal, be transferred to CPU (central processing unit) 3 through current signal conditioning unit 11 and carry out corresponding electric current metering, metering signal can be transferred to gauge outfit and communications manager 6 through isolating communication unit 7 isolated communication (as crystal head) for CPU (central processing unit) 3, show by plug-in mounting ammeter gauge outfit or be wirelessly transmitted to checkout equipment by gauge outfit and communications manager 6, reach function of measuring by the GPRS communicating terminal.
The utility model is by voltage, the conditioning of current signal and the cooperation of CPU (central processing unit), on high-tension side electric energy metrical and processing have been realized, with the primary equipment intellectuality, the secondary device side can directly be carried out communication with ammeter gauge outfit or related display apparatus and be shown the metering result, avoided measuring error, and structure of the present utility model and the relevant components and parts of cooperation can make that overall volume reduces greatly, install, debugging is all very convenient.
Claims (7)
1. digital high pressure measurement device is characterized in that comprising:
The CPU (central processing unit) (3) that is used for electric energy metrical;
The electronic current mutual inductor that is connected with high-voltage power line (1), this electronic current mutual inductor (1) is connected with CPU (central processing unit) (3) by current signal conditioning unit (11);
First voltage sensor (2) that is connected with high-voltage power line, this first voltage sensor (2) is connected with central CPU (central processing unit) (3) by voltage signal conditioning unit (21);
Nurse one's health first Switching Power Supply (4) that unit (11), voltage signal conditioning unit (21) and CPU (central processing unit) (3) are connected with current signal respectively; And
The high voltage display device that is connected with high-voltage power line (5).
2. digital high pressure measurement device according to claim 1 is characterized in that: described high voltage display device (5) comprises second voltage sensor (51) that is connected with high-voltage power line and the high-voltage charge display device (52) that is connected with second voltage sensor (51).
3. digital high pressure measurement device according to claim 1 is characterized in that: described first voltage sensor (2) is the resistor-type voltage sensor.
4. digital high pressure measurement device according to claim 1 is characterized in that: described communicating terminal (9) is a wireless communication terminal.
5. digital high pressure measurement device according to claim 2 is characterized in that: described second voltage sensor (51) is the capacitor type voltage sensor.
6. the applied system of digital high voltage measuring apparatus, it is characterized in that: comprise the described digital high voltage measuring apparatus of an above-mentioned arbitrary claim, also comprise secondary device, wherein this secondary device includes:
Be used to connect the gauge outfit and the communications manager (6) of gauge outfit and communication apparatus, this gauge outfit is connected with CPU (central processing unit) (3) by isolating communication unit (7) with communications manager (6);
The second switch power supply (8) that connects gauge outfit and communications manager (6); And
The communicating terminal (9) that connects gauge outfit and communications manager (6).
7. the applied system of digital high voltage measuring apparatus according to claim 6 is characterized in that: described isolation communication unit (7) is a photoisolator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205613875U CN201819951U (en) | 2010-10-14 | 2010-10-14 | Digital high-voltage metering device and metering system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205613875U CN201819951U (en) | 2010-10-14 | 2010-10-14 | Digital high-voltage metering device and metering system thereof |
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| Publication Number | Publication Date |
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| CN201819951U true CN201819951U (en) | 2011-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010205613875U Expired - Fee Related CN201819951U (en) | 2010-10-14 | 2010-10-14 | Digital high-voltage metering device and metering system thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539906A (en) * | 2010-12-21 | 2012-07-04 | 珠海威瀚科技发展有限公司 | Digital high-voltage metering device and metering system thereof |
| CN102608414A (en) * | 2012-03-28 | 2012-07-25 | 山东计保电气有限公司 | Embedded electric energy measuring method and application extension method of high voltage electrical switchgear |
| CN104950281A (en) * | 2015-07-03 | 2015-09-30 | 朗亿德电气股份有限公司 | High-voltage electric energy meter correction box as well as high-voltage electric energy amplitude correction and detection system and method |
| CN108614142A (en) * | 2018-04-28 | 2018-10-02 | 宁波三星医疗电气股份有限公司 | A kind of improved electric power terminal |
-
2010
- 2010-10-14 CN CN2010205613875U patent/CN201819951U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539906A (en) * | 2010-12-21 | 2012-07-04 | 珠海威瀚科技发展有限公司 | Digital high-voltage metering device and metering system thereof |
| CN102608414A (en) * | 2012-03-28 | 2012-07-25 | 山东计保电气有限公司 | Embedded electric energy measuring method and application extension method of high voltage electrical switchgear |
| CN102608414B (en) * | 2012-03-28 | 2014-05-07 | 山东计保电气有限公司 | Embedded electric energy measuring method and application extension method of high voltage electrical switchgear |
| CN104950281A (en) * | 2015-07-03 | 2015-09-30 | 朗亿德电气股份有限公司 | High-voltage electric energy meter correction box as well as high-voltage electric energy amplitude correction and detection system and method |
| CN108614142A (en) * | 2018-04-28 | 2018-10-02 | 宁波三星医疗电气股份有限公司 | A kind of improved electric power terminal |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110504 Termination date: 20191014 |