CN2600819Y - Device for measuring voltage and current of high-tension switch equipment - Google Patents
Device for measuring voltage and current of high-tension switch equipment Download PDFInfo
- Publication number
- CN2600819Y CN2600819Y CN 02262283 CN02262283U CN2600819Y CN 2600819 Y CN2600819 Y CN 2600819Y CN 02262283 CN02262283 CN 02262283 CN 02262283 U CN02262283 U CN 02262283U CN 2600819 Y CN2600819 Y CN 2600819Y
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- voltage
- bleeder circuit
- processing unit
- impedance
- line
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Abstract
The utility model is a voltage and current measuring device for high-voltage switchgears, characterized in that: the utility model comprises an impedance and bleeder circuit in series connection with a high-voltage wire, as well as a current sensor and a data processing unit in muff coupling with the high-voltage wire, wherein voltage output end of the impedance and bleeder circuit on the high-voltage wire and output end of the current sensor in muff coupling with the high-voltage wire are electrically connected at the input end of the data processing unit. The impedance and bleeder circuit can either be a resistance type bleeder circuit or a capacitance type voltage bleeder. The voltage and current measuring device for high-voltage switchgears has a wide measurement range, a wide frequency coverage and high reliability, and enables accurate motions of protectors in case of malfunctions.
Description
Affiliated technical field: the utility model is a high-tension switch gear electricity consumption piezoelectricity flow measuring apparatus, it is based on voltage, current sensor, and the two is combined integrated, and in addition electronic integrator, electricity are isolated and digital processing technology can be measured voltage, current value and the performance number that shows electric system.
Background technology: measure alternating voltage, electric current at present and mainly rely on the electromagnetic potential transformer summation current transformer, their frequency response is low, and working range is narrow.The Current Transformer Secondary open circuit can produce dangerous high voltage, and when system was short-circuited accident, high amplitude electric current made the current transformer iron core saturated, and the secondary current of output seriously distorts, and causes the protection tripping.And response speed also lags behind, and causes relay misoperation to be done easily.There is ferroresonance in voltage transformer (VT) to system, and electric system is easily damaged.
Summary of the invention: the purpose of this utility model provides a kind of high-tension switch gear electricity consumption piezoelectricity flow measuring apparatus, and its measurement range is big, wide frequency range, and the reliability height can make the protective device precision maneuver under failure condition.
The technical solution of the utility model is: design a kind of high-tension switch gear electricity consumption piezoelectricity flow measuring apparatus, it is characterized in that: it comprises that the current sensor and the data processing unit that one are serially connected in impedance bleeder circuit on the hi-line, are socketed on the hi-line form, the voltage output end of the impedance bleeder circuit on the hi-line and be socketed in the input end that current sensor output terminal on the hi-line is connected electrically in data processing unit.
Described impedance bleeder circuit can be the resistance-type bleeder circuit.
Described impedance bleeder circuit can be the capacitor voltage voltage divider.
Described current sensor can be with Rogowski coil.
Described data processor can be made up of electronic integrator, buffer circuit, digital processing unit, display, the voltage output end of the impedance bleeder circuit on the hi-line, be socketed in the input end that current sensor output terminal on the hi-line is connected electrically in buffer circuit, buffer circuit is electrically connected with computer interface through electronic integrator, digital processing unit; Digital processing unit is connected to display simultaneously.
Characteristics of the present utility model are:
1. output signal is a low level, is easy to and digital protecting and TT﹠C system interface.
2. do not contain iron core, do not have saturatedly, measurement range is big, and wide frequency range can make the protective device precision maneuver under failure condition.
3. second open circuit can not produce high voltage, and it is overheated that second short circuit can not produce.There is very major break down hidden danger owing to can produce high voltage during second open circuit in traditional CT to electrical production and operation always, and novel sensor has fundamentally been stopped the generation of this type of phenomenon, has guaranteed the safety of manpower and equipment.
4. can be used for protection simultaneously and measure two kinds of functions.
Traditional electromagnetic current transducer can not satisfy protection simultaneously and measure two kinds of functions; novel voltage, current sensor are because measurement range is wide; rated output voltage is low; same voltage, current sensor not only can satisfy measurement but also can satisfy the demand of protection; save cost, reduced volume.
5. volume is little, and is in light weight, helps to use best the size of switch cubicle, novel sensor bulk only be traditional electromagnetic transformer volume about 1/3.
The utility model is complied with the development of power technology, satisfy of the requirement of intelligent high-tension switch gear to electric current, voltage sensor, and combine with electronic integrator and digital processing technology, the control of easy and intelligent high-tension switch gear, display unit matches, and can show and transmission voltage value, current value and performance number with digital quantity.
Below in conjunction with the embodiment accompanying drawing the utility model is described further:
Fig. 1 is the utility model electricity principle connection description accompanying drawing.
Description of drawings: among the figure 1, hi-line; 2, impedance bleeder circuit; 3, current sensor; 4, digital processing element; 5, electronic integrator; 6, buffer circuit; 7, digital processing unit; 8, computing machine; 9, display.
Embodiment as shown in Figure 1, it comprises that the current sensor 3 and the data processing unit 4 that one are serially connected in impedance bleeder circuit 2 on the hi-line 1, are socketed on the hi-line form high-tension switch gear electricity consumption piezoelectricity flow measuring apparatus, impedance bleeder circuit 2 is composed in series by impedance Z 1 and impedance Z 2, one end of impedance Z 1 is electrically connected with hi-line 1, one end ground connection of impedance Z 2 is drawn the input end that tie point is electrically connected to the buffer circuit 6 in the data processing unit 4 by impedance Z 1 and impedance Z 2; And the output terminal that is socketed in the current sensor 3 on the hi-line also is connected electrically in another input end of the input end of the buffer circuit 6 in the data processing unit 4.
Claims (5)
1, high-tension switch gear electricity consumption piezoelectricity flow measuring apparatus, it is characterized in that: it comprises that the current sensor and the data processing unit that one are serially connected in impedance bleeder circuit on the hi-line, are socketed on the hi-line form, the voltage output end of the impedance bleeder circuit on the hi-line and be socketed in the input end that current sensor output terminal on the hi-line is connected electrically in data processing unit.
2, high-tension switch gear electricity consumption piezoelectricity flow measuring apparatus according to claim 1, it is characterized in that: described impedance bleeder circuit is the resistance-type bleeder circuit.
3, high-tension switch gear electricity consumption piezoelectricity flow measuring apparatus according to claim 1, it is characterized in that: described impedance bleeder circuit is the capacitor voltage voltage divider.
4, high-tension switch gear electricity consumption piezoelectricity flow measuring apparatus according to claim 1, it is characterized in that: described current sensor is with Rogowski coil.
5, high-tension switch gear electricity consumption piezoelectricity flow measuring apparatus according to claim 1, it is characterized in that: described data processor is made up of electronic integrator, buffer circuit, digital processing unit, display, the voltage output end of the impedance bleeder circuit on the hi-line and be socketed in the input end that current sensor output terminal on the hi-line is connected electrically in buffer circuit, buffer circuit is electrically connected with computer interface through electronic integrator, digital processing unit; Digital processing unit is connected to display simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02262283 CN2600819Y (en) | 2002-09-22 | 2002-09-22 | Device for measuring voltage and current of high-tension switch equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02262283 CN2600819Y (en) | 2002-09-22 | 2002-09-22 | Device for measuring voltage and current of high-tension switch equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2600819Y true CN2600819Y (en) | 2004-01-21 |
Family
ID=34150180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02262283 Expired - Lifetime CN2600819Y (en) | 2002-09-22 | 2002-09-22 | Device for measuring voltage and current of high-tension switch equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2600819Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100552458C (en) * | 2006-07-31 | 2009-10-21 | 深圳市计量质量检测研究院 | High-frequency high-pressure measurement mechanism |
| CN102230945A (en) * | 2011-04-15 | 2011-11-02 | 奇瑞汽车股份有限公司 | High-voltage isolation direct-current voltage acquisition circuit |
| CN102508187A (en) * | 2011-11-30 | 2012-06-20 | 中国西电电气股份有限公司 | Speed parameter calibrating device of high-voltage switch mechanical characteristic tester |
| CN102759650A (en) * | 2012-07-27 | 2012-10-31 | 成都生辉电子科技有限公司 | Electric power intelligent detector |
| CN103245813A (en) * | 2013-03-28 | 2013-08-14 | 国家电网公司 | Comprehensive sensing and measuring device based on alloy resistance and implementation method thereof |
| CN104704376A (en) * | 2012-10-15 | 2015-06-10 | 大陆汽车有限公司 | Method and device for measuring current flowing through switch |
| CN104833837A (en) * | 2015-05-07 | 2015-08-12 | 国网安徽省电力公司 | Isolated pulse voltage real-time measurement system based on analog photoelectric conversion |
| CN108181494A (en) * | 2017-12-29 | 2018-06-19 | 浙江航都电子科技有限公司 | A kind of integrated infrared voltage P/T module |
| CN110297124A (en) * | 2019-08-06 | 2019-10-01 | 南方电网科学研究院有限责任公司 | A kind of ungrounded formula voltage measuring apparatus and method |
-
2002
- 2002-09-22 CN CN 02262283 patent/CN2600819Y/en not_active Expired - Lifetime
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100552458C (en) * | 2006-07-31 | 2009-10-21 | 深圳市计量质量检测研究院 | High-frequency high-pressure measurement mechanism |
| CN102230945A (en) * | 2011-04-15 | 2011-11-02 | 奇瑞汽车股份有限公司 | High-voltage isolation direct-current voltage acquisition circuit |
| CN102508187B (en) * | 2011-11-30 | 2013-10-23 | 中国西电电气股份有限公司 | Speed parameter calibrating device of high-voltage switch mechanical characteristic tester |
| CN102508187A (en) * | 2011-11-30 | 2012-06-20 | 中国西电电气股份有限公司 | Speed parameter calibrating device of high-voltage switch mechanical characteristic tester |
| CN102759650A (en) * | 2012-07-27 | 2012-10-31 | 成都生辉电子科技有限公司 | Electric power intelligent detector |
| CN104704376A (en) * | 2012-10-15 | 2015-06-10 | 大陆汽车有限公司 | Method and device for measuring current flowing through switch |
| US9664742B2 (en) | 2012-10-15 | 2017-05-30 | Continental Automotive Gmbh | Method and device for measuring a current flowing through a switch |
| CN103245813A (en) * | 2013-03-28 | 2013-08-14 | 国家电网公司 | Comprehensive sensing and measuring device based on alloy resistance and implementation method thereof |
| CN103245813B (en) * | 2013-03-28 | 2016-04-20 | 国家电网公司 | A kind of comprehensive sensing measuring apparatus based on resistance alloys and its implementation |
| CN104833837A (en) * | 2015-05-07 | 2015-08-12 | 国网安徽省电力公司 | Isolated pulse voltage real-time measurement system based on analog photoelectric conversion |
| CN108181494A (en) * | 2017-12-29 | 2018-06-19 | 浙江航都电子科技有限公司 | A kind of integrated infrared voltage P/T module |
| CN110297124A (en) * | 2019-08-06 | 2019-10-01 | 南方电网科学研究院有限责任公司 | A kind of ungrounded formula voltage measuring apparatus and method |
| CN110297124B (en) * | 2019-08-06 | 2022-04-12 | 南方电网科学研究院有限责任公司 | Non-grounded voltage measuring device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20120922 Granted publication date: 20040121 |