CN2569308Y - Gas insulation electronic type capacitive voltage mutual inductor - Google Patents
Gas insulation electronic type capacitive voltage mutual inductor Download PDFInfo
- Publication number
- CN2569308Y CN2569308Y CN 02278989 CN02278989U CN2569308Y CN 2569308 Y CN2569308 Y CN 2569308Y CN 02278989 CN02278989 CN 02278989 CN 02278989 U CN02278989 U CN 02278989U CN 2569308 Y CN2569308 Y CN 2569308Y
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- voltage
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- gas
- power amplifier
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Abstract
The utility model relates to a gas insulation electronic type capacitive voltage mutual inductor which adopts insulating gas as a medium and adopts a voltage follow power amplifier for outputting required power. A high voltage capacitor and a low-voltage capacitor of a voltage divider, which are arranged in an insulating sleeve barrel are serially connected, and an output terminal of the low-voltage capacitor of the voltage divider is connected with a series circuit of a voltage transducer and a choke coil. A secondary winding of the voltage transducer is connected with a cable, and a voltage signal is delivered to the voltage follow power amplifier, and is used as enlarged reference of the voltage follow power amplifier. Because the voltage divider adopts low-voltage output, non-offset reactance and accessories are exist, and thus the capacitive voltage mutual inductor has no ferromagnetic resonance. The utility model has the advantage of simple structure.
Description
The utility model relates to and a kind ofly converts high voltage the high voltage measuring of low-voltage to, and the transformer device of hf channel can be provided, and especially adopts gas-insulated medium impregnating agent, and the capacitance type potential transformer of electron-amplifier is adopted in output.
Present widely used capacitance type potential transformer adopts the oil-insulation medium as impregnating agent more; exist the shortcoming of leakiness; and the danger of exploding and firing arranged; the conversion of its voltage then is that one tens kilovolts high-voltage signal is provided by capacitor voltage divider; becoming low voltage signal to provide power conversion of signals by an electromagnetic type intermediate transformer to measuring, protecting; since high-tension existence, so its complex structure, the failure rate height.For solving the load capacity problem of capacitance type potential transformer, adopted the method for reactor compensation, thereby guarantee that capacitance type potential transformer all can satisfy the requirement of certainty of measurement under underloading and full load conditions, but a series of problems have been brought like this, because the existence of reactor, there is the ferro resonance problem inevitably in capacitance type potential transformer.For addressing this problem, installed a series of protection components such as damper additional in electromagnetic unit inside, greatly reduce the long journey reliability of capacitance type potential transformer.Though also adopted gas-insulated in the patented technology that patent ZL01240311.3 announces, the problems referred to above still exist.This root place that just the capacitance type potential transformer rate of failure is high.
For solving problems such as capacitance type potential transformer ferro resonance and load-bearing capacity, the utility model provides a kind of gas-insulated electron type capacitance type potential transformer.The utility model gas-insulated electron type capacitance type potential transformer has not only kept the advantage of existing capacitance type potential transformer, and has removed compensation reactor and supporting part thereof, fundamentally eliminates the ferro resonance problem of capacitance type potential transformer.
Adopt the low-voltage transmitter, output voltage power output not only, have not from capacitor voltage divider take out can and the advantage of no transformer secondary voltage drop, make the capacitor voltage divider function single-minded thereby reach, the reliability height, instrument transformer does not have secondary voltage drop, the purpose that accuracy is high.
The technical scheme that its technical problem that solves the utility model gas-insulated electron type capacitance type potential transformer adopts is: in insulating sleeve, the high-voltage capacitance and the low-voltage capacitance of capacitor voltage divider are in series, the two-terminal of low-voltage capacitance is drawn, and in insulating sleeve, filling insulating gas, insulating gas not only plays insulating effect but also play fire-proof and explosion-proof effect.The two-terminal of low-voltage capacitance connects a voltage transmitter, voltage signal is become several required voltages deliver on the terminal board, and these voltage signals are delivered on the voltage follow power amplifier by cable, measures and protection usefulness for inserting.When need are made communication port with capacitor voltage divider, can between the voltage terminal of secondary capacitor and voltage transmitter, connect a choke, enter voltage transmitter to stop high-frequency signal.Capacitor voltage divider is only drawn low pressure, sends into voltage transmitter, and no High-Voltage Insulation problem only needs the atmospheric air insulation.Voltage transmitter only provides a reference voltage signal to the voltage follow power amplifier; the voltage follow power amplifier is loaded in the control room; externally measured and protection power demand is provided by the control room power supply; this capacitance type potential transformer does not extract power from voltage divider substantially; and need not to adopt compensation reactor; thereby make this capacitance type potential transformer operating state away from resonance point, can prevent to produce ferro resonance.Owing to there is not the ferro resonance problem, so the utility model gas-insulated electron type capacitance type potential transformer is simple in structure, parts are few, the reliability height.Capacitor voltage divider and voltage transmitter are gas-insulated, the danger that no leakage of oil is caught fire, and cable only transmits voltage signal, can not produce the problem of the secondary voltage drop of voltage transformer, help the raising of measurement accuracy, reached thus measure accurate, simple in structure, no ferro resonance, reliability height, fire-proof and explosion-proof purpose.
Characteristics of the present utility model are, not only kept capacitance type potential transformer insulation margin height, but the advantage of double as communication port, the ferro resonance of former capacitance type potential transformer existence and the problem of secondary voltage drop have also been overcome, simplify the structure of instrument transformer, improved the operational reliability and the measurement accuracy of capacitance type potential transformer.Gas isolated employing has obtained no leakage of oil, good looking appearance, fire-proof and explosion-proof effect.
The utility model is described in further detail below in conjunction with drawings and Examples.
Among the figure: 1. voltage divider high-voltage capacitance, 2. voltage divider low-voltage capacitance, 3. insulating sleeve, 4. insulating gas, 5. voltage divider low-voltage capacitance voltage extraction tube, 6. voltage divider low-voltage capacitance earth terminal sleeve pipe, 7. transmitter box, 8. voltage transmitter, 9. voltage transmitter secondary winding, 10. cable, 11. voltage follow power amplifiers, 12. choking-windings, 13. carrier interface, 14. the voltage transmitter voltage terminal, 15. voltage transmitter earth terminals, 16. carrier interface short circuit sheets.
In the illustrated embodiment, voltage divider high-voltage capacitance 1 and voltage divider low-voltage capacitance 2 are connected in series, and are assembled in the insulating sleeve 3, are full of insulating gas 4 in the insulating sleeve 3, and insulating gas 4 can be SF
6Gas, N
2Air and their mist or other gas that can insulate of gas, drying.The pressure-wire of voltage divider low-voltage capacitance 2 is drawn out in the transmitter box 7 by voltage divider low-voltage capacitance voltage extraction tube 5, and the earth connection of voltage divider low-voltage capacitance 2 is drawn out in the transmitter box 7 by voltage divider low-voltage capacitance earth terminal sleeve pipe 6.Voltage divider low-voltage capacitance voltage extraction tube connects the voltage terminal 14 of voltage transmitter 8 for 5 times, earth terminal 15 ground connection of voltage transmitter 8, voltage transmitter secondary winding 9 outlets of voltage transmitter 8 connect cable 10, voltage signal is delivered on the voltage follow power amplifier 11, so that the voltage signal of external equipment desired volume to be provided.Voltage divider low-voltage capacitance earth terminal sleeve pipe connects an end of choking-winding 12 for 6 times, and the other end of choking-winding 12 connects ground connection with the earth terminal 15 of voltage transmitter 8.Voltage divider low-voltage capacitance earth terminal sleeve pipe 6 is simultaneously through carrier interface 13 and carrier interface short circuit sheet 16 short circuit ground connection.When the needs access carrier, the carrier interface short circuit sheet 16 of carrier interface 13 is opened, and the access carrier device gets final product.Constitute a complete no oil, fire-proof and explosion-proof, no ferro resonance, no secondary voltage drop thus, gas-insulated electron type capacitance type potential transformer simple in structure.
Claims (7)
1. capacitance type potential transformer, voltage divider high-voltage capacitance and voltage divider low-voltage capacitance are connected in series, be loaded among the insulating sleeve, be full of insulating gas in the insulating sleeve, the pressure-wire of voltage divider low-voltage capacitance is drawn by voltage divider low-voltage capacitance voltage extraction tube, the earth connection of voltage divider low-voltage capacitance is drawn by voltage divider low-voltage capacitance grounding sleeve, it is characterized in that: the voltage terminal of voltage transmitter links to each other with voltage divider low-voltage capacitance voltage extraction tube, the earth terminal of voltage transmitter links to each other with choking-winding one terminal with earth connection, the another terminal of choking-winding links to each other with carrier interface with voltage divider low-voltage capacitance earth terminal sleeve pipe, carrier interface is not when carrying ripple, by carrier interface short circuit sheet short circuit ground connection, the voltage signal of voltage transmitter secondary winding output is received on the voltage follow power amplifier through cable, is externally supplied the voltage signal of desired volume by the voltage follow power amplifier.
2. gas-insulated electron type capacitance type potential transformer according to claim 1, it is characterized in that: the insulating gas that is filled in its insulating sleeve can be SF
6Gas, air, N
2Gas, or their mist, or other insulating gas.
3. gas-insulated electron type capacitance type potential transformer according to claim 1; it is characterized in that: the voltage signal of the secondary winding output of voltage transmitter; be sent to the voltage follow power amplifier through cable; voltage transmitter is not substantially from the voltage divider absorbed power; cable only transmits voltage signal; transmission power not, the externally measured and required power of protection is only provided by the voltage follow power amplifier.
4. gas-insulated electron type capacitance type potential transformer according to claim 1 is characterized in that: voltage transmitter adopts the low pressure input and output, and the transfer overvoltage signal.
5. gas-insulated electron type capacitance type potential transformer according to claim 1 is characterized in that: choking-winding is connected in series between the voltage terminal and earth terminal of capacitor voltage divider low-voltage capacitance with voltage transmitter, and places in the transmitter box.
6. according to claim 1 and gas-insulated electron type capacitance type potential transformer according to claim 3, it is characterized in that: the voltage follow power amplifier is linked to each other with the voltage transmitter secondary winding in the transmitter box by cable, the voltage follow power amplifier is installed in the control room, the voltage follow power amplifier can be one, also can be a plurality of, also can be a multi-channel structure.
7. according to claim 1, claim 3 and gas-insulated electron type capacitance type potential transformer according to claim 6, it is characterized in that: the power that the voltage follow power amplifier is exported external circuit is to be supplied with by the power supply in control room, the voltage follow power amplifier only obtains voltage signal from voltage transmitter, and not absorbing the power of voltage transmitter, the voltage signal that the voltage signal of voltage follow power amplifier output is followed the voltage transmitter output of being sent into by cable changes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02278989 CN2569308Y (en) | 2002-09-02 | 2002-09-02 | Gas insulation electronic type capacitive voltage mutual inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02278989 CN2569308Y (en) | 2002-09-02 | 2002-09-02 | Gas insulation electronic type capacitive voltage mutual inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2569308Y true CN2569308Y (en) | 2003-08-27 |
Family
ID=33742166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02278989 Expired - Fee Related CN2569308Y (en) | 2002-09-02 | 2002-09-02 | Gas insulation electronic type capacitive voltage mutual inductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2569308Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101839960A (en) * | 2010-04-09 | 2010-09-22 | 江苏雷宇高电压设备有限公司 | Complete power-frequency oil-gas partial discharge-free test transformer equipment |
| CN101713793B (en) * | 2009-12-04 | 2012-02-01 | 中国西电电气股份有限公司 | Gas insulation-based DC high voltage measuring device |
| CN102749556A (en) * | 2011-03-11 | 2012-10-24 | 北京瑞恒天威电力电子有限公司 | Capacitance-type insulating capacitive voltage-dividing insulation monitor |
| CN103207300A (en) * | 2013-03-21 | 2013-07-17 | 许继集团有限公司 | Post-type gas insulation electronic voltage transformer |
| CN103354160A (en) * | 2013-08-02 | 2013-10-16 | 苏州贝腾特电子科技有限公司 | High-voltage transformer |
| CN110836994A (en) * | 2018-08-15 | 2020-02-25 | 大连北方互感器集团有限公司 | All-insulation type capacitor 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 |
-
2002
- 2002-09-02 CN CN 02278989 patent/CN2569308Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101713793B (en) * | 2009-12-04 | 2012-02-01 | 中国西电电气股份有限公司 | Gas insulation-based DC high voltage measuring device |
| CN101839960A (en) * | 2010-04-09 | 2010-09-22 | 江苏雷宇高电压设备有限公司 | Complete power-frequency oil-gas partial discharge-free test transformer equipment |
| CN101839960B (en) * | 2010-04-09 | 2012-05-23 | 江苏雷宇高电压设备有限公司 | Complete power-frequency oil-gas partial discharge-free test transformer equipment |
| CN102749556A (en) * | 2011-03-11 | 2012-10-24 | 北京瑞恒天威电力电子有限公司 | Capacitance-type insulating capacitive voltage-dividing insulation monitor |
| CN102749556B (en) * | 2011-03-11 | 2015-08-05 | 北京恒瑞电力电子有限公司 | The insulated monitor of capacitor voltage equalizing insulation core body |
| CN103207300A (en) * | 2013-03-21 | 2013-07-17 | 许继集团有限公司 | Post-type gas insulation electronic voltage transformer |
| CN103207300B (en) * | 2013-03-21 | 2016-08-03 | 许继集团有限公司 | A kind of column support type gas-insulating electronic voltage transformer |
| CN103354160A (en) * | 2013-08-02 | 2013-10-16 | 苏州贝腾特电子科技有限公司 | High-voltage transformer |
| CN103354160B (en) * | 2013-08-02 | 2015-11-04 | 国家电网公司 | A kind of high-voltage mutual inductor |
| CN110836994A (en) * | 2018-08-15 | 2020-02-25 | 大连北方互感器集团有限公司 | All-insulation type capacitor 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
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |