CN202650944U - High-voltage isolating switch - Google Patents
High-voltage isolating switch Download PDFInfo
- Publication number
- CN202650944U CN202650944U CN 201220170321 CN201220170321U CN202650944U CN 202650944 U CN202650944 U CN 202650944U CN 201220170321 CN201220170321 CN 201220170321 CN 201220170321 U CN201220170321 U CN 201220170321U CN 202650944 U CN202650944 U CN 202650944U
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- China
- Prior art keywords
- movable contact
- contact spring
- deformation
- stationary contact
- high voltage
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 239000011888 foil Substances 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 7
- 238000004026 adhesive bonding Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 230000003068 static effect Effects 0.000 abstract 3
- 230000003750 conditioning effect Effects 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000005570 vertical transmission Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The utility model relates to a high-voltage isolating switch, and pertains to the technical field of power system substation automation. The high-voltage isolating switch comprises a static contact rod and a movable contact spring. Force sensitive elements are arranged at deformed positions at two sides of the contact position between the static contact rod and the movable contact spring. The force sensitive elements are used for signal output through special shielded wires. According to the utility model, the deformation generated between the movable contact spring and the static contact rod in the high-voltage isolating switch is measured by using the force sensitive elements, and the magnitude of the deformation can be used to judge whether the isolating switch is closed in place. According to the utility model, the operational reliability of high-voltage isolating switch equipment is ensured, the human judgment error behavior is eliminated, and the reliability and accuracy of monitoring results are ensured.
Description
Technical field
The utility model relates to a kind of high voltage isolator, belongs to the power system transformer substation technical field of automation.
Background technology
Transformer station's mesohigh isolating switch is important device for switching in power plant and the transformer station's electrical system, needs to support the use with primary cut-out.Its major function is: guarantee High-Voltage Electrical Appliances and the safety of device when service work, play isolation voltage, can not be used for cutting off, dropping into load current and cut-off short circuit current, only can be used for not producing some handover operation of powerful electric arc.Can high voltage isolator equipment normally operate in and depend on to a great extent whether isolating switch closes a floodgate and put in place.Yet, the cause influence that is in operation and is subjected to the natural environment and climate condition and manufactures and designs, the easily fault of generation machinery or electric aspect.Especially the movable contact spring when isolating switch can not effectively contact with the stationary contact bar, cause movable contact spring and the stationary contact bar contact site heating defective such as overheated, cause high voltage isolator to damage, the electric grid large area power cut accident, not only cause huge economic loss to electric power system, and power station operations staff's personal safety is caused damage.Therefore, judge that accurately whether the isolating switch combined floodgate puts in place is the key issue that solves the normal operation of transformer station's mesohigh isolated switchgear.
The utility model content
The purpose of this utility model provides a kind of high voltage isolator, to solve in the present high voltage isolator owing to loose contact between high voltage isolator movable contact spring and the stationary contact bar or the closed problem not in place of the contactless high voltage isolator that causes.
The utility model provides a kind of high voltage isolator for solving the problems of the technologies described above, comprise stationary contact bar and movable contact spring, the both sides of contact area cause that the deformation position is equipped with force sensitive element between described stationary contact bar and the movable contact spring, and force sensitive element carries out signal output by the private mask line.
Causing between described movable contact spring and the stationary contact bar that the deformation position comprises on the movable contact spring surface is caused on the position, stationary contact bar surface of deformation by pressure between movable contact spring and the stationary contact bar and to be caused on the position, movable contact spring inwall of deformation by pressure between movable contact spring and the stationary contact bar by pressure between movable contact spring and the stationary contact bar and to cause the position that causes deformation by pressure between movable contact spring and the stationary contact bar on the position of deformation and the stationary contact bar inwall.
Described force sensitive element is to cause the deformation position by the both sides that gluing method, welding or screw fixation are installed in contact position between stationary contact bar and the movable contact spring.
Described isolating switch also comprises the signal condition module, and the input of this signal condition module is connected on the force sensitive element by the private mask line.
Described force sensing element is foil gauge.
The beneficial effects of the utility model are: the deformation of the utility model by causing between the movable contact spring in the use force sensitive element measurement high voltage isolator and the stationary contact bar, judge according to the size of deformation quantity whether the isolating switch closure puts in place.The method has been guaranteed high voltage isolator equipment reliability of operation, has stopped artificial error in judgement behavior, has guaranteed reliability and the accuracy of monitoring result.
Description of drawings
Fig. 1 is testing process signal transmission schematic diagram among the utility model embodiment;
Fig. 2 is that foil gauge is installed in high voltage isolator structure chart on the stationary contact bar among the utility model embodiment;
Fig. 3 is that foil gauge is installed in high voltage isolator structure chart on the movable contact spring among the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described further.
The used high voltage isolator mechanical realization variation of at present electric power system, but all can be abstract in adopting vertical-transmission bar rotation of motor-driven, by what machine driving, the movable contact spring of final driving isolation switch is clamped the stationary contact bar, is judged to be " combined floodgate " position again; When the motor reverse rotation, drive the motion of vertical-transmission bar, movable contact spring breaks away from the stationary contact bar, arrives an assigned address, is judged to be " separating brake " position.
The novel high voltage isolator of this use comprises movable contact spring, the stationary contact bar, force sensing element and signal conditioning circuit, the both sides that force sensing element is arranged on contact area between stationary contact bar and the movable contact spring cause the deformation position, the position that causes deformation between movable contact spring in the high voltage isolator and the stationary contact bar comprises that movable contact spring just is easy to measure the position that causes deformation by pressure between movable contact spring and the stationary contact bar on the face in the high voltage isolator, be easy to measure the position that causes deformation by pressure between movable contact spring and the stationary contact bar on the stationary contact bar surface, movable contact spring inwall (groove) is easy to measure and is caused on the position of deformation or the stationary contact bar inwall by pressure between movable contact spring and the stationary contact bar and to be easy to measure the position that causes deformation by pressure between movable contact spring and the stationary contact bar, the described position that is easy to gaging pressure refers under identical operational environment, place the maximum variable quantity that force sensing element can obtain the parameter to be measured that caused by pressure in this position, simultaneously can guarantee that the movable contact spring of high voltage isolator can contact well with the stationary contact bar, high voltage isolator is working properly.Signal conditioning circuit can be arranged in the high-voltage switch gear, also can be arranged on the high-voltage switch gear outside, and the number of force sensing element can according to circumstances arrange, and we describe as an example of movable contact spring example.
As shown in Figure 2, comprise four foil gauges in this high voltage isolator, these four foil gauges are installed in the position that the stationary contact bar both sides of contact area between stationary contact bar and the movable contact spring cause deformation by gluing method, welding or screw fixation respectively, and each foil gauge is connected on the signal conditioning circuit by the private mask line.Four foil gauges in the high voltage isolator shown in Figure 3 are installed in respectively the position that the movable contact spring both sides of contact area between stationary contact bar and the movable contact spring cause deformation, each foil gauge is connected on the signal conditioning circuit by the private mask line, signal conditioning circuit can flexible choice according to the number of foil gauge, if two foil gauges, we can utilize signal conditioning circuit that these two foil gauges and two fixed resistances are formed a half-bridge circuit, if four foil gauges, we can utilize signal conditioning circuit that four foil gauges are consisted of a full-bridge circuit.
Signals transmission in the high voltage isolator of the present utility model as shown in Figure 1, its detailed process is: separate the process of closing a floodgate of closing at high pressure, foil gauge is measured in real time movable contact spring or stationary contact rod variable and is sent to and passes through signal conditioning circuit, signal conditioning circuit converts the signal of telecommunication to the deformation quantity that receives and carries out filtering and amplify processing, convert deformation quantity to the signal of telecommunication, then the signal after signal conditioning circuit will be processed is transferred in the microprocessor, microprocessor is further processed conversion to this signal, send to background data center by wireless mode or wired mode, whether background data center meets designing requirement according to the clamping force between movable contact spring and the stationary contact bar of judging that receives, and then judges whether high voltage isolator closes a floodgate and put in place.
Claims (5)
1. a high voltage isolator comprises stationary contact bar and movable contact spring, it is characterized in that: the both sides of contact position cause that the deformation position is equipped with force sensitive element between described stationary contact bar and the movable contact spring, and force sensitive element carries out signal output by the private mask line.
2. high voltage isolator according to claim 1 is characterized in that: causing between described movable contact spring and the stationary contact bar that the deformation position comprises on the movable contact spring surface is caused on the position, stationary contact bar surface of deformation by pressure between movable contact spring and the stationary contact bar and to be caused on the position, movable contact spring inwall of deformation by pressure between movable contact spring and the stationary contact bar by pressure between movable contact spring and the stationary contact bar and to cause the position that causes deformation by pressure between movable contact spring and the stationary contact bar on the position of deformation and the stationary contact bar inwall.
3. high voltage isolator according to claim 1 is characterized in that: described force sensitive element is to cause the deformation position by the both sides that gluing method, welding or screw fixation are installed in contact position between stationary contact bar and the movable contact spring.
4. high voltage isolator according to claim 1, it is characterized in that: described isolating switch also comprises the signal condition module, the input of this signal condition module is connected on the force sensitive element by the private mask line.
5. according to claim 1,2,3 or 4 described high voltage isolators, it is characterized in that: described force sensing element is foil gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220170321 CN202650944U (en) | 2012-04-20 | 2012-04-20 | High-voltage isolating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220170321 CN202650944U (en) | 2012-04-20 | 2012-04-20 | High-voltage isolating switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202650944U true CN202650944U (en) | 2013-01-02 |
Family
ID=47420011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220170321 Expired - Fee Related CN202650944U (en) | 2012-04-20 | 2012-04-20 | High-voltage isolating switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202650944U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108205094A (en) * | 2016-12-16 | 2018-06-26 | 中国石油化工股份有限公司 | A kind of earthing state monitoring apparatus |
-
2012
- 2012-04-20 CN CN 201220170321 patent/CN202650944U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108205094A (en) * | 2016-12-16 | 2018-06-26 | 中国石油化工股份有限公司 | A kind of earthing state monitoring apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20131202 Address after: No. 1298 Xuchang City, Henan province 461000 XJ Avenue Patentee after: Xuji Electric Co., Ltd. Patentee after: Xuchang Xuji Software Technology Co., Ltd. Patentee after: State Grid Corporation of China Address before: No. 1298 Xuchang City, Henan province 461000 XJ Avenue Patentee before: Xuji Group Co., Ltd. Patentee before: Xuji Electric Co., Ltd. Patentee before: Xuchang Xuji Software Technology Co., Ltd. Patentee before: State Grid Corporation of China |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20190420 |