CN201514849U - Composite insulation compensation type electronic voltage transformer - Google Patents
Composite insulation compensation type electronic voltage transformer Download PDFInfo
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- CN201514849U CN201514849U CN2009201871343U CN200920187134U CN201514849U CN 201514849 U CN201514849 U CN 201514849U CN 2009201871343 U CN2009201871343 U CN 2009201871343U CN 200920187134 U CN200920187134 U CN 200920187134U CN 201514849 U CN201514849 U CN 201514849U
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Abstract
The utility model relates to a composite insulation compensation type electronic voltage transformer, belonging to the technical field of voltage measurement and protection in power system. The utility model overcomes the defect that overvoltage is formed in the traditional electromagnetic voltage transformer or the capacitive voltage divider and provides a high-precision electronic voltage transformer. The technical scheme is that a resistance voltage divider is formed by a high-voltage arm resistance, a low-voltage arm resistance, a stabilivolt, a high-voltage compensation electrode, a low-voltage compensation electrode and a low-voltage lead, the high-voltage arm resistance and the low-voltage arm resistance are connected in series, the design range of voltage ratio is 10,000 to 5,000 : 5 to 1, low-voltage signals output by the resistance voltage divider are transmitted to a signal processing unit by a dual-shielded twisted cable for processing, and voltage class compliant with input requirement of the subsequent measurement and protection device is obtained. The utility model has the advantages of good linearity, fast response speed, large measurement range, high measurement precision, good practicability and good application prospect.
Description
Technical field
The utility model relates to voltage measurement and resist technology field in the electric power system, is specially electronic type voltage transformer.
Technical background
Electromagnetic potential transformer or capacitive divider are adopted in the collection of power system voltage signal mostly at present.Electromagnetic transformer has inductance coil and ferromagnetic material, frequency band is not wide, when magnetic circuit is saturated, the secondary side voltage waveform distortion can occur, externally be rendered as inductive element, produce the exchange of induction reactance and capacitive reactance with capacitive element in the system, easily form the oscillation circuit of many complexity, if satisfy certain condition, long-term ferro resonance will take place, form overvoltage; Capacitive divider belongs to capacitive element, easily forms resonance with inductive element in the system, also overvoltage can occur.Overvoltage not only jeopardizes the safety of instrument transformer own, and influences the operate as normal that secondary is measured, protected, and poor reliability can't adapt to the intelligentized requirement of power distribution automation and switch, and this is the deadly defect of traditional electromagnetic potential transformer or capacitive divider.
Summary of the invention
A kind of compound inslation offset-type of the utility model electronic type voltage transformer technical problem to be solved is: overcome traditional electromagnetic potential transformer or capacitive divider and can form overvoltage, jeopardize instrument transformer safety and influence the defective that secondary is measured operate as normal; by well-designed high-voltage arm resistance and low-voltage arm resistance voltage ratio, can obtain meeting the electric pressure of follow-up measurement and protection equipment input requirement.
Technical solution adopted in the utility model is: a kind of compound inslation offset-type electronic type voltage transformer is made up of resitstance voltage divider, transmission system and signal processing unit, and resitstance voltage divider is made of high-voltage arm resistance, low-voltage arm resistance, voltage-stabiliser tube, high pressure compensation electrode, low-voltage compensation electrode and low-voltage lead; It is characterized by: described high-voltage arm resistance and low-voltage arm resistance series connection, the design voltage ratio is 10000～5000: 5～1.Voltage-stabiliser tube in parallel on low-voltage arm resistance, high-pressure side at high-voltage arm resistance is provided with a high pressure compensation electrode, low-pressure end at low-voltage arm resistance R2 has installed a low-voltage compensation electrode additional, and the outer tube wall of instrument transformer is an insulating material, and the casting glue can is adopted in interior insulation.
The beneficial effects of the utility model are: compare with traditional voltage transformer, there is not ferro resonance in this product, measures bandwidth, and dynamic characteristic is good, and the range of linearity is big, and insulation system is simple, and volume is little, and cost is low; Can not produce superpotential danger, safety, high reliability, the precision height, temperature influence is little and outside electromagnetic interference is less, can satisfy the requirement of measuring and protecting simultaneously, has great practical value and vast market prospect.
Description of drawings
Fig. 1 is a kind of compound inslation offset-type of the utility model electronic type voltage transformer schematic diagram
1 is resitstance voltage divider, and 2 is transmission system, 3 signal processing units, and 4 is the high pressure compensation electrode, 5 low-voltage compensation electrodes, 6 is low-voltage lead, and R1 is a high-voltage arm resistance, and R2 is a low-voltage arm resistance, and S is a voltage-stabiliser tube.
Embodiment
As shown in Figure 1.A kind of compound inslation offset-type of the utility model electronic type voltage transformer mainly is made up of resitstance voltage divider 1, transmission system 2 and signal processing unit 3.Resitstance voltage divider 1 mainly is that the proportional small voltage signal that is converted to of busbar voltage is exported as sensing head; resitstance voltage divider 1 is made of high-voltage arm resistance R 1, low-voltage arm resistance R2, voltage-stabiliser tube S, high pressure compensation electrode 4, low-voltage compensation electrode 5 and low-voltage lead 6; high-voltage arm resistance R 1 and low-voltage arm resistance R2 series connection; by design high-voltage arm resistance R 1 and low-voltage arm resistance R2 voltage ratio is 10000～5000: 5～1, the tested voltage of electric power system can be converted into obtain to meet the electric pressure that follow-up measurement and the input of protection equipment require.
Be protection secondary side measurement mechanism, voltage-stabiliser tube S in parallel on low-voltage arm resistance R2 is slightly less than its discharge voltage just or equals the maximum voltage that low-pressure side allows.For compensating resistance voltage divider 1 high-voltage connection and high-pressure side stray capacitance, be provided with a high pressure compensation electrode 4 at the high-pressure side of high-voltage arm resistance R 1 to resitstance voltage divider 1 body; For compensating resistance voltage divider 1 stray capacitance over the ground, installed a low-voltage compensation electrode 5 additional at the low-pressure end of low-voltage arm resistance R2, by appropriate design high-low pressure compensating electrode, make the error of instrument transformer satisfy standard-required.The outer tube wall of instrument transformer is an insulating material, and the casting glue can is adopted in interior insulation.Low-voltage lead 6 is drawn by the becket on the chamber wall, and earth terminal directly links to each other with low-voltage compensation electrode 5, and the while is as the bottom of whole instrument transformer.
Transmission system 2 is to be made of double layer screen twisted wire and splicing ear, mainly resitstance voltage divider 1 output signal is delivered to signal processing unit 3, realizes the outside electromagnetic interference function of shielding simultaneously.Signal processing unit 3 mainly is made up of voltage ratio adjustment, filter circuit, phase compensation and amplitude follow circuit, have the impedance conversion, phase compensation and the amplitude regulatory function that realize voltage transformer, make the instrument transformer output signal satisfy the ratio of GB and differ requirement.Resitstance voltage divider 1 output low-voltage signal is transferred to signal processing unit 3 through the double shield twisted wire; signal processing unit 3 is exported standard compliant voltage signal and is measured for instrument and meter and the protection use through ratio adjustment, filtering, phase compensation, amplitude follow circuit.
Claims (1)
1. compound inslation offset-type electronic type voltage transformer, be made up of resitstance voltage divider (1), transmission system (2) and signal processing unit (3), resitstance voltage divider (1) is made of high-voltage arm resistance (R1), low-voltage arm resistance (R2), voltage-stabiliser tube (S), high pressure compensation electrode (4), low-voltage compensation electrode (5) and low-voltage lead (6); It is characterized by: described high-voltage arm resistance (R1) and low-voltage arm resistance (R2) series connection, the design voltage ratio is 10000～5000: 5～1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201871343U CN201514849U (en) | 2009-08-26 | 2009-08-26 | Composite insulation compensation type electronic voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201871343U CN201514849U (en) | 2009-08-26 | 2009-08-26 | Composite insulation compensation type electronic voltage transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201514849U true CN201514849U (en) | 2010-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2009201871343U Expired - Fee Related CN201514849U (en) | 2009-08-26 | 2009-08-26 | Composite insulation compensation type electronic voltage transformer |
Country Status (1)
| Country | Link |
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| CN (1) | CN201514849U (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102169132A (en) * | 2011-04-02 | 2011-08-31 | 烟台东方威思顿电气有限公司 | High-impedance high-temperature stability high-voltage bleeder |
| 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 |
| 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 |
| CN103604979A (en) * | 2013-11-29 | 2014-02-26 | 北京卫星环境工程研究所 | Detector based on capacitor voltage distribution and detecting method thereof |
| CN104090141A (en) * | 2014-07-03 | 2014-10-08 | 北京瑞奇恩互感器设备有限公司 | Electronic type voltage transformer and zero-sequence electronic type voltage transformer |
| CN106053909A (en) * | 2016-07-25 | 2016-10-26 | 浙江天际互感器有限公司 | Resistor divider type three-phase combined voltage transformer with zero sequence voltage output |
| CN106546790A (en) * | 2016-11-25 | 2017-03-29 | 云南电网有限责任公司电力科学研究院 | A kind of differential configuration resitstance voltage divider |
| CN107807264A (en) * | 2017-11-09 | 2018-03-16 | 国网辽宁省电力有限公司电力科学研究院 | Electronic type voltage transformer based on electric resistance partial pressure principle |
| CN108493821A (en) * | 2018-07-03 | 2018-09-04 | 国网湖南省电力有限公司 | Automatic Switching on a kind of distribution net post using electronic sensor |
| CN109270319A (en) * | 2018-11-29 | 2019-01-25 | 西安高研电器有限责任公司 | A kind of multi-tap voltage transformer and its production, adjustment method |
| CN109991463A (en) * | 2019-04-19 | 2019-07-09 | 河北润志电气设备有限公司 | A kind of AC voltage sensor |
| CN110068718A (en) * | 2019-05-30 | 2019-07-30 | 山东联合电力技术有限公司 | A kind of electronic mutual inductor of electric resistance partial pressure |
-
2009
- 2009-08-26 CN CN2009201871343U patent/CN201514849U/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102565487A (en) * | 2010-12-21 | 2012-07-11 | 珠海威瀚科技发展有限公司 | Electronic type voltage transformer |
| CN102169132A (en) * | 2011-04-02 | 2011-08-31 | 烟台东方威思顿电气有限公司 | High-impedance high-temperature stability high-voltage bleeder |
| 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 |
| 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 |
| CN103604979A (en) * | 2013-11-29 | 2014-02-26 | 北京卫星环境工程研究所 | Detector based on capacitor voltage distribution and detecting method thereof |
| CN104090141A (en) * | 2014-07-03 | 2014-10-08 | 北京瑞奇恩互感器设备有限公司 | Electronic type voltage transformer and zero-sequence electronic type voltage transformer |
| CN106053909B (en) * | 2016-07-25 | 2019-08-27 | 浙江天际互感器有限公司 | Electric resistance partial pressure type three-phase combination voltage mutual inductor with residual voltage output |
| CN106053909A (en) * | 2016-07-25 | 2016-10-26 | 浙江天际互感器有限公司 | Resistor divider type three-phase combined voltage transformer with zero sequence voltage output |
| CN106546790A (en) * | 2016-11-25 | 2017-03-29 | 云南电网有限责任公司电力科学研究院 | A kind of differential configuration resitstance voltage divider |
| CN107807264A (en) * | 2017-11-09 | 2018-03-16 | 国网辽宁省电力有限公司电力科学研究院 | Electronic type voltage transformer based on electric resistance partial pressure principle |
| CN108493821A (en) * | 2018-07-03 | 2018-09-04 | 国网湖南省电力有限公司 | Automatic Switching on a kind of distribution net post using electronic sensor |
| CN109270319A (en) * | 2018-11-29 | 2019-01-25 | 西安高研电器有限责任公司 | A kind of multi-tap voltage transformer and its production, adjustment method |
| CN109991463A (en) * | 2019-04-19 | 2019-07-09 | 河北润志电气设备有限公司 | A kind of AC voltage sensor |
| CN110068718A (en) * | 2019-05-30 | 2019-07-30 | 山东联合电力技术有限公司 | A kind of electronic mutual inductor of electric resistance partial pressure |
| CN110068718B (en) * | 2019-05-30 | 2022-01-04 | 山东联合电力产业发展有限公司 | Electronic transformer with resistance voltage division function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ANHUI ONESKY ELECTRIC TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: ANHUI XIANGYUAN ELECTRIC POWER TECHNOLOGY CO., LTD. Effective date: 20110317 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 241007 NO. 18, BINZHANG ROAD, NEW AND HIGH TECHNOLOGY DEVELOPMENT AREA, WUHU CITY, ANHUI PROVINCE TO: 230031 NO. 99, YONGHE ROAD, NEW AND HIGH TECHNOLOGY DEVELOPMENT AREA, HEFEI CITY, ANHUI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110317 Address after: Yonghe Road, high tech Development Zone, Hefei city of Anhui Province, No. 99 230031 Patentee after: Anhui Yitian Electrical Technology Co., Ltd. Address before: 241007 No. 18 Zhangjiang Road, hi tech Development Zone, Anhui, Wuhu Patentee before: Anhui Xiangyuan Power Tech Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100623 Termination date: 20140826 |
|
| EXPY | Termination of patent right or utility model |