CN102998503B - Mutual inductor electronic unit, electronic mutual inductor and replacing method of electronic unit - Google Patents
Mutual inductor electronic unit, electronic mutual inductor and replacing method of electronic unit Download PDFInfo
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- CN102998503B CN102998503B CN201210462996.9A CN201210462996A CN102998503B CN 102998503 B CN102998503 B CN 102998503B CN 201210462996 A CN201210462996 A CN 201210462996A CN 102998503 B CN102998503 B CN 102998503B
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- electronic unit
- mutual inductor
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- circuit tuning
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000012937 correction Methods 0.000 claims description 11
- 238000005259 measurement Methods 0.000 claims description 8
- 238000012423 maintenance Methods 0.000 abstract description 6
- 238000012986 modification Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000002463 transducing effect Effects 0.000 description 1
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Abstract
The invention relates to a mutual inductor electronic unit, an electronic mutual inductor and a replacing method of the electronic unit. The mutual inductor electronic unit comprises a first adjusting circuit capable of meeting accuracy requirements by adjusting coefficients, a second adjusting circuit and a serial port. The second adjusting circuit is capable of meeting accuracy requirement of the integral electronic mutual inductor when forming the electronic mutual inductor with a sensor head. The serial port can conduct reading and writing with an upper computer. A two-stage adjusting circuit is arranged on the mutual inductor electronic unit, so that users can simply download modification coefficients of the second adjusting circuit into a new electronic unit in the replacement process. The method is free of accuracy loss, simple to operate and short in period and greatly saves maintenance cost.
Description
Technical field
The present invention relates to the replacing options of mutual inductor electronic unit, electronic mutual inductor and electronic unit thereof.
Background technology
At present, the electronic mutual inductor of widespread use in intelligent substation is formed primarily of electronic unit two parts of on high-tension side sensing head and low-pressure side, due to the limitation of production technology, mutual inductor transducing head structure parameter cannot reach completely the same, the difference of a sensing element existence ± 1%, therefore, every sensing head must carry out error correction by electronic unit, and the overall measurement accuracy of mutual inductor just can be made to reach requirement.But when electronic unit breaks down, the on-the-spot power-off of staff is changed, and need scene in conjunction with sensing head debugging electronic unit, thus meet accuracy requirement, realize the harmless exchange of precision.In the field adjustable stage in maintenance process, require that the power operation cycle is long, attended operation is complicated, and maintenance cost increases thereupon.
Summary of the invention
During in order to overcome existing electronic mutual inductor fault, require staff's power operation field adjustable, maintenance period is caused to extend, the problem that maintenance cost increases, the invention provides a kind of electronic unit spot replace method of electronic mutual inductor and this electronic mutual inductor, on-the-spot without the need to debugging direct replacing, the precision realizing electronic mutual inductor can't harm.
In order to solve the problems of the technologies described above, the invention provides a kind of mutual inductor electronic unit, this electronic unit comprise can by regulation coefficient meet accuracy requirement own the first Circuit tuning, forms electronic mutual inductor with sensing head time pass through to adjust and make the second Circuit tuning of satisfied overall electronic mutual inductor accuracy requirement and can carry out with host computer the serial ports read and write.
Present invention also offers a kind of electronic mutual inductor, comprise sensing head and electronic unit, described electronic unit comprise can by regulation coefficient meet itself accuracy requirement the first Circuit tuning, forms electronic mutual inductor with sensing head time pass through to adjust and make the second Circuit tuning of satisfied overall electronic mutual inductor accuracy requirement and can carry out with host computer the serial ports read and write.
Present invention also offers a kind of replacing options of electronic unit of electronic mutual inductor, the step of the method is as follows:
1). get one makes to meet accuracy requirement when dispatching from the factory electronic unit through the first Circuit tuning adjustment;
2). be arranged on sensing head by this electronic unit and form electronic mutual inductor, the coefficient adjusting this electronic unit second Circuit tuning, to revise the error of sensing head, makes electronic unit match with it, meets the overall measurement accuracy requirement of electronic mutual inductor;
3). the correction factor of electronic unit second Circuit tuning of this electronic mutual inductor is preserved by its debug serial port;
4). judge whether this electronic mutual inductor electronic unit damages, if damaged, the electronic unit more renewed is on this sensing head;
5). downloaded in the electronic unit newly changed by the correction factor of electronic unit second Circuit tuning previously preserved, the electronic unit newly changed can match with this sensing head, and meets the overall measurement accuracy requirement of electronic mutual inductor;
6). repeat step 4) and 5), make in electronic mutual inductor electronic unit onsite application process, to realize the harmless replacing of precision.
Make to meet the electronic unit of accuracy requirement when the new electronic unit changed in described step 4) dispatches from the factory through regulation coefficient.
The invention has the beneficial effects as follows: the present invention is by arranging two-stage Circuit tuning to mutual inductor electronic unit, in the new electronic unit that only correction factor of the second Circuit tuning need be downloaded to during replacing, the method can't harm precision, simple to operate, cycle is short, greatly saves maintenance cost.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that mutual inductor electronic unit consistance of the present invention realizes;
Fig. 2 is the schematic diagram that electronic mutual inductor consistance of the present invention realizes;
Fig. 3 is that electronic mutual inductor of the present invention can't harm the schematic diagram exchanging and realize;
Fig. 4 is the process flow diagram of the replacing options of electronic mutual inductor electronic unit.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further.
The embodiment of mutual inductor electronic unit of the present invention
The electronic unit of electronic mutual inductor refers to collector, and its effect is that the simulation small voltage signal that sensing head exports is converted to digital signal, then sends bay device to certain communication modes.Electronic unit is dimerous by hardware and software, and between individuality, its ardware feature can not be completely the same.Therefore, we are provided with the first Circuit tuning, when all electronic units input same signal, by adjusting the correction factor of the first Circuit tuning, make the output of all electronic units completely the same.So just reach the on all four effect of all electronic unit conversion characteristics.Electronic mutual inductor be by sensing head and electronic unit dimerous.And the characteristic step between different sensing head may be completely the same, and sensing head have can not carry out adjusting to consistent.Therefore, we are provided with the second Circuit tuning of electronic unit, when sensing head and electronic unit uniting and adjustment, by adjusting the correction factor of the second Circuit tuning of electronic unit, make the precision of sensing head reach measuring accuracy requirement.
As shown in Figure 1, adjusted coefficient K 1 module 6 and second-order correction COEFFICIENT K 2 module 7 of debug serial port 5, first Circuit tuning is included in this electronic unit 1.To electronic unit without concrete accuracy requirement, only has coherence request.Wherein electronic unit 1 is before dispatching from the factory, and need the consistance ensureing electronic unit 1, this consistance is by regulating the adjusted coefficient K 1 of its first Circuit tuning to realize.First, this electronic unit 1 is connected with host computer 4, host computer 4 is preset as 1 by the debug serial port of electronic unit 1 the adjusted coefficient K 2 of the second Circuit tuning; Electronic unit 1 itself has on-line tuning ability 3, then regulates the adjusted coefficient K 1 of the first Circuit tuning, makes this electronic unit 1 can meet its consistance and accuracy requirement, and is cured the adjusted coefficient K 1 of the first now obtained Circuit tuning.
The embodiment of electronic mutual inductor of the present invention
As shown in Figure 2, this electronic mutual inductor comprises: electronic unit 1 and sensing head 2, wherein includes adjusted coefficient K 1 module 6 of debug serial port 5, first Circuit tuning and adjusted coefficient K 2 module 7 of the second Circuit tuning in electronic unit 1.Wherein electronic unit 1 is before dispatching from the factory, need the consistance ensureing electronic unit 1, this consistance is by regulating the adjusted coefficient K 1 of its first Circuit tuning to realize, first, this electronic unit 1 is connected with host computer 4, and host computer 4 is preset as 1 by the debug serial port of electronic unit 1 the adjusted coefficient K 2 of the second Circuit tuning; Electronic unit 1 itself has on-line tuning ability 3, then regulates the adjusted coefficient K 1 of the first Circuit tuning, makes this electronic unit 1 can meet its consistance and accuracy requirement, and is cured the adjusted coefficient K 1 of the first now obtained Circuit tuning.When this electronic unit 1 needs to coordinate with sensing head 2, machine debugging must be carried out to the electronic sensor be made up of electronic unit 1 and sensing head 2, by regulating the adjusted coefficient K 2 of the second Circuit tuning of electronic unit 1, it is made to meet overall measurement accuracy requirement.
The embodiment of the replacing options of electronic mutual inductor electronic unit of the present invention
The present invention is by arranging two-stage Circuit tuning to mutual inductor electronic unit, and in the new electronic unit that only correction factor of the second Circuit tuning need be downloaded to during replacing, as shown in Figure 4, concrete steps are as follows for its detailed process:
1. get one makes to meet accuracy requirement when dispatching from the factory electronic unit 1 through the adjusted coefficient K 1 of the first Circuit tuning adjustment, before electronic unit 1 dispatches from the factory, by debug serial port 5, be connected with host computer 4, the adjusted coefficient K 2 presetting the second Circuit tuning is 1, regulate the adjusted coefficient K 1 of the first Circuit tuning, ensure electronic unit consistance, meet accuracy requirement.
2. form electronic mutual inductor by electronic unit 1 and sensing head 2, be connected with host computer 4 by the debug serial port 5 of electronic unit 1, regulate the adjusted coefficient K 2 of its second Circuit tuning, ensure that this electronic mutual inductor meets its overall measurement accuracy requirement.
3. and through overregulate gained to the adjusted coefficient K 2 of the second Circuit tuning of electronic unit 1 be saved in host computer 4 by its debug serial port.
4. this electronic mutual inductor in use, if its electronic unit 1 breaks down, when needing to change, only need the electronic unit 8 that new, as shown in Figure 3, this new electronic unit 8 structure is the same with electronic unit 1, and the adjusted coefficient K 1 of the first Circuit tuning of new electronic unit 8 meets its conforming requirement through overregulating and is solidificated in this new electronic unit 8, and the adjusted coefficient K 2 of the second Circuit tuning of new electronic unit 8 is predetermined to be 1.
5. when this new electronic unit 8 will with sensing head 2 with the use of, only this new electronic unit 8 need be connected with host computer 4, by the debug serial port on new electronic unit 8, the adjusted coefficient K 2 of the second Circuit tuning of the electronic unit 1 preserved before host computer 4 is downloaded in the correction factor of the second Circuit tuning of new electronic unit 8, the electronic sensor be now made up of this new electronic unit 8 and sensing head 2 can meet overall measurement accuracy requirement, thus the direct replacing realizing electronic mutual inductor electronic unit is without the need to debugging.
6. repeat step 4 and 5, this method ensure that electronic mutual inductor is in use directly changed without the need to debugging, and meet accuracy requirement.
Claims (4)
1. a mutual inductor electronic unit, is characterized in that: this mutual inductor electronic unit comprise can by regulation coefficient meet itself accuracy requirement the first Circuit tuning, forms electronic mutual inductor with sensing head time pass through to adjust and make the second Circuit tuning of satisfied overall electronic mutual inductor accuracy requirement and can carry out with host computer the serial ports read and write.
2. an electronic mutual inductor, comprise sensing head and electronic unit, it is characterized in that: described electronic unit comprise can by regulation coefficient meet itself accuracy requirement the first Circuit tuning, forms electronic mutual inductor with sensing head time pass through to adjust and make the second Circuit tuning of satisfied overall electronic mutual inductor accuracy requirement and can carry out with host computer the serial ports read and write.
3. a replacing options for electronic mutual inductor electronic unit as claimed in claim 2, is characterized in that: the step of the method is as follows:
1). get one makes to meet accuracy requirement when dispatching from the factory electronic unit through the first Circuit tuning adjustment;
2). be arranged on sensing head by this electronic unit and form electronic mutual inductor, the coefficient adjusting this electronic unit second Circuit tuning, to revise the error of sensing head, makes electronic unit match with it, meets the overall measurement accuracy requirement of electronic mutual inductor;
3). the correction factor of electronic unit second Circuit tuning of this electronic mutual inductor is preserved by described serial ports;
4). judge whether this electronic mutual inductor electronic unit damages, if damaged, the electronic unit more renewed is on this sensing head;
5). downloaded in the electronic unit newly changed by the correction factor of electronic unit second Circuit tuning previously preserved, the electronic unit newly changed can match with this sensing head, and meets the overall measurement accuracy requirement of electronic mutual inductor;
6). repeat step 4) and 5), make in electronic mutual inductor electronic unit onsite application process, to realize the harmless replacing of precision.
4. the replacing options of electronic mutual inductor electronic unit according to claim 3, is characterized in that: the new electronic unit changed in described step 4) is the electronic unit making to meet accuracy requirement when dispatching from the factory through the first Circuit tuning adjustment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210462996.9A CN102998503B (en) | 2012-11-16 | 2012-11-16 | Mutual inductor electronic unit, electronic mutual inductor and replacing method of electronic unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210462996.9A CN102998503B (en) | 2012-11-16 | 2012-11-16 | Mutual inductor electronic unit, electronic mutual inductor and replacing method of electronic unit |
Publications (2)
| Publication Number | Publication Date |
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| CN102998503A CN102998503A (en) | 2013-03-27 |
| CN102998503B true CN102998503B (en) | 2015-01-21 |
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| CN201210462996.9A Expired - Fee Related CN102998503B (en) | 2012-11-16 | 2012-11-16 | Mutual inductor electronic unit, electronic mutual inductor and replacing method of electronic unit |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103323639A (en) * | 2013-05-27 | 2013-09-25 | 河南省电力公司鹤壁供电公司 | Precision lossless replacing method and device for collector in electronic transformer |
| CN112782575B (en) * | 2020-12-27 | 2021-12-14 | 常熟开关制造有限公司(原常熟开关厂） | Current measuring device for circuit breaker, maintenance and correction method of current measuring device and intelligent circuit breaker |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101183606A (en) * | 2007-10-15 | 2008-05-21 | 华中科技大学 | Electronic type current mutual inductor |
| CN102053191A (en) * | 2010-12-06 | 2011-05-11 | 国电南瑞科技股份有限公司 | Electronic voltage transformer using data fusion technology and error calibration method thereof |
| CN201876485U (en) * | 2010-12-01 | 2011-06-22 | 许继集团有限公司 | Electronic transformer based on intelligent conditioning unit |
| CN201887715U (en) * | 2010-11-15 | 2011-06-29 | 山东泰开互感器有限公司 | Voltage transformer error regulating device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8600695B2 (en) * | 2009-12-31 | 2013-12-03 | Veris Industries, Llc | Phase canceling current transducer |
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- 2012-11-16 CN CN201210462996.9A patent/CN102998503B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101183606A (en) * | 2007-10-15 | 2008-05-21 | 华中科技大学 | Electronic type current mutual inductor |
| CN201887715U (en) * | 2010-11-15 | 2011-06-29 | 山东泰开互感器有限公司 | Voltage transformer error regulating device |
| CN201876485U (en) * | 2010-12-01 | 2011-06-22 | 许继集团有限公司 | Electronic transformer based on intelligent conditioning unit |
| CN102053191A (en) * | 2010-12-06 | 2011-05-11 | 国电南瑞科技股份有限公司 | Electronic voltage transformer using data fusion technology and error calibration method thereof |
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