CN101377976A - Electronic voltage transformer - Google Patents
Electronic voltage transformer Download PDFInfo
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- CN101377976A CN101377976A CNA2007101317663A CN200710131766A CN101377976A CN 101377976 A CN101377976 A CN 101377976A CN A2007101317663 A CNA2007101317663 A CN A2007101317663A CN 200710131766 A CN200710131766 A CN 200710131766A CN 101377976 A CN101377976 A CN 101377976A
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- voltage
- transformer
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- arm resistance
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Abstract
The invention relates to an electronic type voltage transformer which consists of equalizing electrodes, epoxy resin mixed glue, a high-voltage arm resistance, a low-voltage arm resistance, an over-voltage protection device, and a transformer body. The high-voltage arm resistance is connected with the low-voltage arm resistance in series and is provided with one equalizing electrode respectively at the upper end and the lower end thereof; and the right side of the low-voltage arm resistance is connected with the over-voltage protection device. The electronic type voltage transformer which uses a resistance or resistance-capacitance voltage divider principle does not have ferromagnetic resonance, overcomes the disadvantage of iron core saturation, and allows open circuit as well as short circuit. Compared with the traditional transformer, the electronic type voltage transformer has the advantages of small volume, light weight, simple structure, wide frequency band, and no resonance. In the electrical equipment such as various indoor and outdoor circuit breakers, column switches, high and medium voltage switchgears and the like, the traditional transformer can be replaced widely.
Description
Technical field: the present invention relates to a kind of electronic type voltage transformer.
Technical background: therefore traditional electromagnetic transformer has limited power system development because volume and weight is big, cost is high, frequency band is narrow, be subjected to electromagnetic interference, output can not be with computer networking, can not realize intelligent control.Exist the possible of resonance, poor reliability as perceptual material.
Summary of the invention: purpose of the present invention will provide a kind of electronic type voltage transformer exactly.It can overcome the existing above defective of traditional electromagnetic transformer well.The object of the present invention is achieved like this, a kind of electronic type voltage transformer is made up of the equal piezoelectricity utmost point, epoxy resin mixed glue, high-voltage arm resistance, low-voltage arm resistance, overvoltage protection, current transformer body, it is characterized in that: high-voltage arm resistance is connected with low-voltage arm resistance, and descends two ends that an equal piezoelectricity utmost point respectively is set thereon; At described low-voltage arm resistance the right overvoltage protection in parallel.The present invention adopts a kind of electronic type voltage transformer of resistance or capacitance-resistance voltage divider principle not have ferro resonance, has overcome saturated shortcoming unshakable in one's determination, allows open circuit and short circuit.Compare with traditional instrument transformer, have advantages such as volume is little, in light weight, simple in structure, bandwidth, no resonance.In electric equipments such as various indoor and outdoor circuit breakers, on-pole switch, high pressure switch cubicle, can extensively substitute traditional instrument transformer.
Description of drawings: Fig. 1 is a conspectus of the present invention;
1. equal the piezoelectricity utmost point, 2. high-voltage arm resistance, 3. low-voltage arm resistance, 4. overvoltage protection.
Embodiment: the invention will be further described below in conjunction with accompanying drawing:
In the drawings, a kind of electronic type voltage transformer is made up of the equal piezoelectricity utmost point, epoxy resin mixed glue, high-voltage arm resistance, low-voltage arm resistance, overvoltage protection, current transformer body, it is characterized in that: high-voltage arm resistance 2 is connected with low-voltage arm resistance 3, and descends two ends that an equal piezoelectricity utmost point 1 respectively is set thereon; Overvoltage protection 4 in parallel on described low-voltage arm resistance 3 the right.During concrete enforcement, adopt resistance or capacitance-resistance voltage divider principle, its output is linear in whole measuring range, convert a high voltage to low-voltage, exports standard compliant secondary voltage after treatment.Overvoltage protection is set, and is in order to prevent low-voltage arm resistance and to damage, and can limit the secondary voltage protection measuring system that raises.Owing to have stray capacitance between high-pressure side and voltage divider body and the ground, make voltage divider produce error, and the voltage skewness.Distribute, reduce the voltage divider error for improving voltage, add bucking electrode to compensate voltage divider stray capacitance over the ground at the voltage divider high-pressure side.Simultaneously, add bucking electrode, make voltage divider stray capacitance relative fixed over the ground at earth terminal.Central low layer at a kind of electronic type voltage transformer that adopts resistance or capacitance-resistance voltage divider principle is provided with low-voltage arm resistance; the right in described low-voltage arm resistance is provided with overvoltage protection; above low-voltage arm resistance, dash and fill out with epoxy resin mixed glue; high-voltage arm resistance is set above epoxy resin mixed glue, and the left side, upper end of high-voltage arm resistance is provided with the equal piezoelectricity utmost point.Adopt a kind of electronic type voltage transformer of resistance or capacitance-resistance voltage divider principle, secondary output meets the specified secondary output voltage of IEC60044-7:1999 and GB/T208407-2007 " electronic type voltage transformer " standard.Can be directly and instrument, protective relaying device interface, directly supporting with intermediate switchgear cabinet.Thereby realize the function of metering, control, measurement, protection.
Claims (1)
1. an electronic type voltage transformer is made up of the equal piezoelectricity utmost point, epoxy resin mixed glue, high-voltage arm resistance, low-voltage arm resistance, overvoltage protection, current transformer body, it is characterized in that: high-voltage arm resistance (2) is connected with low-voltage arm resistance (3), and descends two ends that an equal piezoelectricity utmost point (1) respectively is set thereon; At described low-voltage arm resistance (3) the right overvoltage protection (4) in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101317663A CN101377976A (en) | 2007-08-29 | 2007-08-29 | Electronic voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101317663A CN101377976A (en) | 2007-08-29 | 2007-08-29 | Electronic voltage transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101377976A true CN101377976A (en) | 2009-03-04 |
Family
ID=40421464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101317663A Pending CN101377976A (en) | 2007-08-29 | 2007-08-29 | Electronic voltage transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101377976A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005289A (en) * | 2010-10-22 | 2011-04-06 | 北京浩霆光电技术有限责任公司 | Resistor-capacitor voltage division principle-based voltage transformer |
| CN102163495A (en) * | 2011-01-26 | 2011-08-24 | 吕强 | Voltage transformer |
| CN102435814A (en) * | 2011-09-30 | 2012-05-02 | 中国电力科学研究院 | Device for measuring arc voltage of direct current circuit breaker |
| CN102565487A (en) * | 2010-12-21 | 2012-07-11 | 珠海威瀚科技发展有限公司 | Electronic type voltage transformer |
| CN103048513A (en) * | 2011-10-14 | 2013-04-17 | 安徽一天电气技术有限公司 | Self-insurance wide-frequency voltage signal collecting device |
| CN103217564A (en) * | 2013-03-28 | 2013-07-24 | 国家电网公司 | Voltage sensor and implementing method thereof based on alloy resistor |
| CN106469601A (en) * | 2016-09-28 | 2017-03-01 | 江苏靖江互感器股份有限公司 | A kind of controller switching equipment is with one or two fusion threephase potential transformers |
| CN108957085A (en) * | 2018-07-26 | 2018-12-07 | 大力电工襄阳股份有限公司 | High-voltage detecting device |
| CN112485530A (en) * | 2020-11-26 | 2021-03-12 | 云南电网有限责任公司电力科学研究院 | System and method for testing resistance value of high-voltage arm of direct-current voltage transformer |
| CN115825527A (en) * | 2022-12-12 | 2023-03-21 | 江苏靖江互感器股份有限公司 | LC compatible voltage sensor |
-
2007
- 2007-08-29 CN CNA2007101317663A patent/CN101377976A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005289A (en) * | 2010-10-22 | 2011-04-06 | 北京浩霆光电技术有限责任公司 | Resistor-capacitor voltage division principle-based voltage transformer |
| CN102565487A (en) * | 2010-12-21 | 2012-07-11 | 珠海威瀚科技发展有限公司 | Electronic type voltage transformer |
| CN102163495A (en) * | 2011-01-26 | 2011-08-24 | 吕强 | Voltage transformer |
| CN102435814A (en) * | 2011-09-30 | 2012-05-02 | 中国电力科学研究院 | Device for measuring arc voltage of direct current circuit breaker |
| CN103048513A (en) * | 2011-10-14 | 2013-04-17 | 安徽一天电气技术有限公司 | Self-insurance wide-frequency voltage signal collecting device |
| CN103217564A (en) * | 2013-03-28 | 2013-07-24 | 国家电网公司 | Voltage sensor and implementing method thereof based on alloy resistor |
| CN103217564B (en) * | 2013-03-28 | 2016-08-31 | 国家电网公司 | A kind of voltage sensor based on resistance alloys and its implementation |
| CN106469601A (en) * | 2016-09-28 | 2017-03-01 | 江苏靖江互感器股份有限公司 | A kind of controller switching equipment is with one or two fusion threephase potential transformers |
| CN108957085A (en) * | 2018-07-26 | 2018-12-07 | 大力电工襄阳股份有限公司 | High-voltage detecting device |
| CN112485530A (en) * | 2020-11-26 | 2021-03-12 | 云南电网有限责任公司电力科学研究院 | System and method for testing resistance value of high-voltage arm of direct-current voltage transformer |
| CN115825527A (en) * | 2022-12-12 | 2023-03-21 | 江苏靖江互感器股份有限公司 | LC compatible voltage sensor |
| CN115825527B (en) * | 2022-12-12 | 2023-11-21 | 江苏靖江互感器股份有限公司 | LC compatible voltage sensor |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090304 |