CN202454490U - Breaker for realizing on-line monitoring of vacuum degree of vacuum explosion chamber - Google Patents
Breaker for realizing on-line monitoring of vacuum degree of vacuum explosion chamber Download PDFInfo
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- CN202454490U CN202454490U CN2011202828206U CN201120282820U CN202454490U CN 202454490 U CN202454490 U CN 202454490U CN 2011202828206 U CN2011202828206 U CN 2011202828206U CN 201120282820 U CN201120282820 U CN 201120282820U CN 202454490 U CN202454490 U CN 202454490U
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Abstract
The present utility model discloses a breaker for realizing on-line monitoring of vacuum degree of a vacuum explosion chamber. The breaker comprises a monitoring device arranged on the edge of a shielding cover of the vacuum explosion chamber, the monitoring device is connected with a control device through an optical fiber transmission line, the control device is used for receiving vacuum explosion chamber vacuum monitoring signals emitted by a sensor and comparing the signals with data set in the control device, displaying in real time and giving out a vacuum explosion chamber leakage alarm; a monitoring method is realized through arranging the voltage sensor on the edge of the shielding cover of the vacuum explosion chamber to detect the level change of the shielding cover, thus pressure change of gas inside the vacuum explosion chamber can be monitored, and the method comprises high voltage area monitoring and safety area judging. In the beaker for realizing on-line monitoring of vacuum degree of the vacuum explosion chamber, the above special structure is provided, the relation between level of the vacuum breaker vacuum explosion chamber shielding cover and vacuum degree of the explosion chamber is adopted, and through measuring changes of the level of the vacuum switch shielding cover relative to the normal value, measuring errors caused by environmental changes can be offset.
Description
Technical field
The utility model relates to a kind of electric power system High-tension Switch Devices, especially relates to a kind of circuit breaker of on-line monitoring vacuum level of vacuum arc-quenching chamber.
Background technology
Vacuum circuit-breaker has obtained number of applications with its beyond challenge advantage pressure field in the power transmission and transformation electrical network, and its core component---vacuum interrupter is as a kind of passive electrical vacuum device, and the principal element that influences its reliability is a vacuum degree.Dielectric strength in the vacuum and vacuum degree have close getting in touch.Therefore, the vacuum degree of vacuum interrupter is the important technology index that guarantees vacuum switch insulation property and arc extinction performance.Operating vacuum circuit-breaker, the vacuum degree of its vacuum interrupter just possibly cause vacuum switch can not normally cut-off circuit, thereby influence the normal power supply of distribution system if is lower than some levels, will cause great harm.On-line monitoring vacuum degree then is a kind of effective ways of accident early warning, and when vacuum degree was lower than a certain limit value, automatic early-warning prevented the accident generation in advance.
Therefore online detection, realize the direct measurement of vacuum degree owing to will under the prerequisite of not changing switch main body structure and running status, monitor the variation of its vacuum degree at any time, also has a lot of difficult points.The indirect method that is used for the online detection of vacuum degree mainly contains electro-optical conversion method, coupling capacitance method [4,5] etc.The electro-optical conversion method is based on " electro optic effect " principle; Utilize some optical element (like the Pockels element) in electric field, can change optical property; Thereby convert the electric field change corresponding to the variation of luminous flux with vacuum degree; But the subject matter of this method is that poor work stability, the cost of optical element is high, penetration and promotion on a large scale.
The utility model content
The utility model technical problem to be solved is the circuit breaker that a kind of on-line monitoring vacuum level of vacuum arc-quenching chamber is provided to the problem that exists in the prior art; Its objective is and make high-pressure vacuum breaker have characteristics such as safe, economic, easy to maintenance; Advanced technology is offset the measure error answer environmental change and to produce, and system stability provides good booster action for the field personnel to the diagnosis of equipment.
The technical scheme of the utility model is the circuit breaker of this kind on-line monitoring vacuum level of vacuum arc-quenching chamber; Comprise the monitoring device that is installed in vacuum interrupter radome edge; Described monitoring device is connected with control device through optical fiber transmission line; The vacuum interrupter vacuum monitor signal that described control device receiving sensor sends and the data that are provided with in this signal and the control device are compared shows in real time and sends the vacuum interrupter leakage alarm.
Described monitoring device is made up of with conveyer current transformer, voltage sensor, control and preprocessor, electric light conversion; Voltage sensor is installed in vacuum interrupter radome edge, and the output of voltage sensor is connected with optical fiber transmission line with conveyer through control and preprocessor, electric light conversion.
Described control device is made up of opto-electronic conversion and receiver, control microprocessor, display circuit, alarm control circuit, and described opto-electronic conversion is connected with display circuit, warning circuit through control microprocessor with receiver.
Described voltage sensor is the induction type voltage sensor, and model is BSX-11V20.
Circuit breaker with a kind of on-line monitoring vacuum level of vacuum arc-quenching chamber of said structure has the following advantages:
1. the circuit breaker of this kind on-line monitoring vacuum level of vacuum arc-quenching chamber adopts the current potential and the interior vacuum degree relation of arc control device of vacuum circuit-breaker vacuum interrupter radome; The situation of change of the relative normal value of current potential through measuring the vacuum switch radome, thus offset because the environmental change errors caused.
2. the circuit breaker of this kind on-line monitoring vacuum level of vacuum arc-quenching chamber is communicated with data monitored through optical fiber, monitors the indoor vacuum degree of vacuum extinction in real time, can in time avoid vacuum circuit-breaker normally not cut-off circuit, reduces the loss.
3. the circuit breaker of this kind on-line monitoring vacuum level of vacuum arc-quenching chamber is applied to traditional product with on-line monitoring technique, promotes the technology content of product, realizes the intellectuality of vacuum circuit-breaker, improves competitiveness of product, has good application and popularization value.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described further:
Fig. 1 is the structural representation of the circuit breaker of the utility model on-line monitoring vacuum level of vacuum arc-quenching chamber.
Fig. 2 is the structural representation of monitoring system in the circuit breaker of on-line monitoring vacuum level of vacuum arc-quenching chamber.
In Fig. 1-2,1: monitoring device; 2: control device; 3: current transformer; 4: voltage sensor; 5: control and preprocessor; 6: electric light conversion and conveyer; 7: optical fiber transmission line; 8: opto-electronic conversion and receiver; 9: control microprocessor; 10: display circuit; 11: alarm control circuit.
Embodiment
Combine and to know by structure shown in Fig. 1-2; The circuit breaker of this kind on-line monitoring vacuum level of vacuum arc-quenching chamber comprises the monitoring device 1 that is installed in vacuum interrupter radome edge; Monitoring device 1 is connected with control device 2 through optical fiber transmission line 7; The vacuum interrupter vacuum monitor signal that control device 2 receiving sensors send also compares the data of setting in this signal and the control device 2, shows in real time and sends the vacuum interrupter leakage alarm.Wherein, Monitoring device 1 is made up of with conveyer 6 current transformer 3, voltage sensor 4, control and preprocessor 5, electric light conversion; Voltage sensor 4 is installed in vacuum interrupter radome edge, and the output of voltage sensor 4 is connected with optical fiber transmission line 7 with conveyer 6 through control and the conversion of preprocessor 5, electric light; Control device 2 is made up of opto-electronic conversion and receiver 8, control microprocessor 9, display circuit 10, alarm control circuit 11, and opto-electronic conversion is connected with display circuit 10, warning circuit 11 through control microprocessor 9 with receiver 8.The voltage sensor 4 of above-mentioned indication is the induction type voltage sensor, and model is BSX-11V20.
The method of utilizing the circuit breaker of above-mentioned on-line monitoring vacuum level of vacuum arc-quenching chamber to monitor; Thereby this kind monitoring method is the indoor gas pressure change of potential change monitoring vacuum extinction that voltage sensor 4 is installed in vacuum interrupter radome edge detection radome, comprises higher-pressure region monitoring and place of safety judgement.Wherein the step of higher-pressure region monitoring is; The current potential of each phase vacuum interrupter radome is obtained by voltage sensor 4; And be translated into the signal of telecommunication; Be converted into digital pulse signal through control and preprocessor 5, be converted into light signal with conveyer 6, reach the place of safety control device with the optical transmission mode through optical fiber transmission line 7 through the electric light conversion; The step that the place of safety is judged does; Changing the light signal that receives into digital pulse signal shows through control microprocessor 9; Control microprocessor 9 becomes this signal processing to compare with the improper judgment basis of vacuum level of vacuum arc-quenching chamber that is provided with behind the vacuum interrupter internal gas pressure and judge that carry out the improper warning of vacuum degree according to the result who judges, improper judgment basis promptly; When gas pressure intensity rose to 1X10-1Pa in the vacuum arc control device, vacuum degree was reported to the police.
The operation principle of the utility model is: vacuum circuit-breaker is when work; Some position on its vacuum interrupter radome is the dividing potential drop of the electrostatic capacitance that is had respectively between high-pressure section-radome, the radome-grounding electrode is arranged and to determine; When the vacuum arc control device moved under normal working voltage and internal gas pressure, arc control device shielded and do not have electrostatic charge morning; And the internal gas pressure of working as the vacuum arc control device raises, and causes dielectric strength to reduce, and can discharge between contact and radome, thereby make the radome mountain belts of arc control device that certain electrostatic charge arranged.Therefore, the AC field between radome and the earth will change, and monitoring device is installed in the radome edge just can measures the current potential change, thereby monitoring vacuum interrupter internal gas pressure change.
Claims (4)
1. the circuit breaker of an on-line monitoring vacuum level of vacuum arc-quenching chamber; It is characterized in that: described circuit breaker comprises the monitoring device (1) that is installed in vacuum interrupter radome edge; Described monitoring device (1) is connected with control device (2) through optical fiber transmission line (7); The vacuum interrupter vacuum monitor signal that described control device (2) receiving sensor sends also compares the data of setting in this signal and the control device (2), shows in real time and sends the vacuum interrupter leakage alarm.
2. the circuit breaker of a kind of on-line monitoring vacuum level of vacuum arc-quenching chamber according to claim 1; It is characterized in that: described monitoring device (1) is made up of with conveyer (6) current transformer (3), voltage sensor (4), control and preprocessor (5), electric light conversion; Voltage sensor (4) is installed in vacuum interrupter radome edge, and the output of voltage sensor (4) is connected with optical fiber transmission line (7) with conveyer (6) through control and the conversion of preprocessor (5), electric light.
3. the circuit breaker of a kind of on-line monitoring vacuum level of vacuum arc-quenching chamber according to claim 1 and 2; It is characterized in that: described control device (2) is made up of opto-electronic conversion and receiver (8), control microprocessor (9), display circuit (10), alarm control circuit (11), and described opto-electronic conversion is connected with display circuit (10), warning circuit (11) through control microprocessor (9) with receiver (8).
4. the circuit breaker of a kind of on-line monitoring vacuum level of vacuum arc-quenching chamber according to claim 3 is characterized in that: described voltage sensor (4) is the induction type voltage sensor, and model is BSX-11V20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202828206U CN202454490U (en) | 2011-08-05 | 2011-08-05 | Breaker for realizing on-line monitoring of vacuum degree of vacuum explosion chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202828206U CN202454490U (en) | 2011-08-05 | 2011-08-05 | Breaker for realizing on-line monitoring of vacuum degree of vacuum explosion chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202454490U true CN202454490U (en) | 2012-09-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202828206U Expired - Fee Related CN202454490U (en) | 2011-08-05 | 2011-08-05 | Breaker for realizing on-line monitoring of vacuum degree of vacuum explosion chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202454490U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050326A (en) * | 2012-12-31 | 2013-04-17 | 青岛特锐德电气股份有限公司 | Integrated intelligent vacuum permanent magnet circuit breaker |
| CN103903902A (en) * | 2014-03-14 | 2014-07-02 | 国家电网公司 | Device for measuring pressure of high-voltage circuit breaker arc extinguish chamber based on acoustic surface waves |
| CN110491721A (en) * | 2019-09-25 | 2019-11-22 | 辽宁工程技术大学 | Contact type Vacuity of Vacuum Circuit Breakers on-Line Monitor Device and method built in a kind of |
| CN112992599A (en) * | 2019-12-13 | 2021-06-18 | 天津平高智能电气有限公司 | Vacuum arc-extinguishing chamber vacuum degree measuring device |
| CN113707494A (en) * | 2021-09-09 | 2021-11-26 | 西安交通大学 | Vacuum degree detection device with vacuum arc-extinguishing chamber embedded electrode and method |
| CN113745049A (en) * | 2021-08-27 | 2021-12-03 | 西安交通大学 | Vacuum degree monitoring method and system in vacuum arc extinguishing chamber |
-
2011
- 2011-08-05 CN CN2011202828206U patent/CN202454490U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050326A (en) * | 2012-12-31 | 2013-04-17 | 青岛特锐德电气股份有限公司 | Integrated intelligent vacuum permanent magnet circuit breaker |
| CN103903902A (en) * | 2014-03-14 | 2014-07-02 | 国家电网公司 | Device for measuring pressure of high-voltage circuit breaker arc extinguish chamber based on acoustic surface waves |
| CN110491721A (en) * | 2019-09-25 | 2019-11-22 | 辽宁工程技术大学 | Contact type Vacuity of Vacuum Circuit Breakers on-Line Monitor Device and method built in a kind of |
| CN110491721B (en) * | 2019-09-25 | 2024-03-12 | 辽宁工程技术大学 | Online monitoring device and method for vacuum degree of built-in contact type vacuum circuit breaker |
| CN112992599A (en) * | 2019-12-13 | 2021-06-18 | 天津平高智能电气有限公司 | Vacuum arc-extinguishing chamber vacuum degree measuring device |
| CN112992599B (en) * | 2019-12-13 | 2023-02-17 | 天津平高智能电气有限公司 | Vacuum degree measuring device for vacuum arc extinguish chamber |
| CN113745049A (en) * | 2021-08-27 | 2021-12-03 | 西安交通大学 | Vacuum degree monitoring method and system in vacuum arc extinguishing chamber |
| CN113707494A (en) * | 2021-09-09 | 2021-11-26 | 西安交通大学 | Vacuum degree detection device with vacuum arc-extinguishing chamber embedded electrode and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120926 Termination date: 20140805 |
|
| EXPY | Termination of patent right or utility model |