CN2826448Y - Insulated monitor for capacitance type insulator - Google Patents
Insulated monitor for capacitance type insulator Download PDFInfo
- Publication number
- CN2826448Y CN2826448Y CN 200520119103 CN200520119103U CN2826448Y CN 2826448 Y CN2826448 Y CN 2826448Y CN 200520119103 CN200520119103 CN 200520119103 CN 200520119103 U CN200520119103 U CN 200520119103U CN 2826448 Y CN2826448 Y CN 2826448Y
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- CN
- China
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- display
- core coil
- insulating body
- capacitor type
- type insulating
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- Expired - Lifetime
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Abstract
The utility model relates to an insulated monitor for a capacitance type insulator, which is an attachment of a high-voltage electrical device with a capacitance type insulator, and the insulated monitor is mainly composed of an iron core coil, a display and a protector, wherein the iron core coil is sheathed on a grounding wire of a capacitance type insulator. The current passing through the grounding wire directly reflects the insulated status of the capacitance type insulator. When a small portion of capacitance screens break through, the current is increased. Current signals are input to the display by the iron core coil. When the current signals achieve warning values, working personnel need to early arrange and repair so as to prevent the capacitance insulator from being broken through to cause accidental power cut by the development of insulation defects. The protector is connected in parallel to the display, so the utility model can prevent device voltage resistant tests or systems from the over-measuring range damage of the display caused by over-voltage.
Description
Technical field
This new product belongs to a kind of high-voltage electrical equipment annex, is assemblied on the high-voltage electrical equipment with capacitor type insulating body, is used to monitor whether the capacitance plate insulation damages.
Background technology
The capacitor type bushing, high-tension current inductor with capacitor type core body etc. all belongs to the High-Voltage Electrical Appliances with capacitor type insulating body, its insulator all is by electric conductor, is arranged in the concentric cylindrical electrode of the different-diameter that outer multiple layer metal of electric conductor or semiconductive material make and the composition of interelectrode insulating material composition.Electric conductor and high voltage join during operation, and the most last layer electrode all received on the device housings by ground wire and the direct ground connection of metal counterpoise grounding by firmly being connected with device housings.
When this capacitor type insulating body generation local damage, for example between certain two adjacent electrode after the insulation breakdown, high voltage then continues to be applied between the remaining electrode, make remaining interelectrode electric field intensity increase, and cause to insulate between remaining electrode and damage gradually, finally cause the whole puncture of capacitor type insulating body, cause the system short-circuit power outage, cause very big loss to national economy.
Earth current by the capacitor type insulating body is relevant with the electric capacity of capacitor type insulating body.If between the electrode of capacitor type insulating body puncture is arranged, then electric capacity changes, and flows through going into the earth capacitance electric current and also corresponding variation can taking place of ground wire.Can monitor insulation status by measuring this earth current, and discovery as early as possible has the insulation defect of capacitor type insulating body, when a small amount of electrode punctures, the earth capacitance electric current of measuring of going into increases, monitor promptly provides alarm signal, make equipment just being found in early days of insulation damages, and can obtain the scheduled outage maintenance, the equipment of preventing is in operation to damage suddenly and causes power outage.
Summary of the invention
Purpose of the present invention is intended to have by the early detection of insulation monitoring device the damage of insulation of the high-voltage electrical equipment of capacitor type insulating body, and the equipment that prevents damages the power outage that causes suddenly.
According to a kind of insulation monitoring device that is used for the capacitor type insulating body provided by the invention; be by iron-core coil 1; display 2; protector 3 is formed; the most last layer electrode 5 that it is characterized in that capacitor type insulating body 4 passes iron-core coil 1 with the ground wire 7 that the high-voltage electrical equipment shell 6 of ground connection is connected; the lead-out terminal of iron-core coil 1 is connected by lead with the input terminal of display 2, and two terminals of protector 3 also are connected in parallel on the input terminal of display 2.
The described insulation monitoring device that is used for the capacitor type insulating body, it is characterized in that ground wire 7 that the most last layer electrode 5 of capacitor type insulating body 4 link to each other with high-voltage electrical equipment shell 6 directly by the endoporus of iron-core coil 1 or on iron-core coil 1 the some circles of winding.
The described insulation monitoring device that is used for the capacitor type insulating body, it is characterized in that display 2 is to exchange microampere meter by pointer type to constitute, its display part that is exposed to the high-voltage electrical equipment case surface is the gauge outfit of band pointer, and the latter half of the index dial of gauge outfit is to scribble red caution district.
The described insulation monitoring device that is used for the capacitor type insulating body is characterized in that the protector 3 that is connected in parallel on display 2 input terminals is to be made of semiconductor element.
The major advantage of invention
1 insulation situation at the long-term variation surveillance equipment that passes through capacitance current that can be online in service, when capacitance current surpasses the numerical value of adjusting, meter pointer enters red caution zone, prompting should be carried out interruption maintenance, equipment punctures when preventing that insulation damages is serious, causes unexpected forced outage.
2 measure the capacitance current of ground wire by the method that is sleeved on the iron-core coil coupling on the ground wire, can not disconnect the ground loop of capacitor type insulating body, do not influence the running status of capacitor type insulating body, even if the normal operation that fault can not influence equipment has yet taken place the insulation monitoring device of capacitor type insulating body.
3 protectors are connected in parallel on and can prevent on the display because the high voltage that high-potting applied or system's superpotential make display surpass the range damage.
Description of drawings
Fig. 1 is the principle schematic of the insulation monitoring device of capacitor type insulating body.
Fig. 2 wherein is with the red caution of dash area district for pointer type exchanges the card synoptic diagram of microampere meter as display.
Specific implementation method
Optimum embodiment is: as shown in Figure 1, the ground wire 7 of capacitor type insulating body (for example ground wire of the current transformer of the ground wire of capacitor type wall bushing or capacitor type insulating body) directly is connected on the high-voltage electrical equipment shell 6 by the endoporus of iron-core coil 1, and two terminals of iron-core coil 1 are received display 2 pointer-type by lead and exchanged on the terminal of microampere meter.The protector 3 that the semiconduction element is formed is connected in parallel on the gauge outfit terminal simultaneously.
Claims (4)
1 one kinds of insulation monitoring devices that are used for the capacitor type insulating body; be by iron-core coil (1); display (2); protector (3) is formed; it is characterized in that the ground wire (7) that the most last layer electrode (5) of capacitor type insulating body (4) is connected with high-voltage electrical equipment shell (6) passes iron-core coil (1); the lead-out terminal of iron-core coil (1) is connected by lead with the input terminal of display (2), and two terminals of protector (3) also are connected in parallel on the input terminal of display (2).
2 according to the described a kind of insulation monitoring device that is used for the capacitor type insulating body of claim 1, it is characterized in that ground wire (7) that the most last layer electrode (5) of capacitor type insulating body (4) link to each other with high-voltage electrical equipment shell (6) directly by the endoporus of iron-core coil (1) or on iron-core coil (1) the some circles of winding.
3 according to the described a kind of insulation monitoring device that is used for the capacitor type insulating body of claim 1, it is characterized in that display (2) is to exchange microampere meter by pointer type to constitute, its display part that is exposed to the high-voltage electrical equipment case surface is the gauge outfit of band pointer, and the latter half of the index dial of gauge outfit is to scribble red caution district.
4 according to the described a kind of insulation monitoring device that is used for the capacitor type insulating body of claim 1, it is characterized in that the protector (3) that is connected in parallel on display (2) input terminal is to be made of semiconductor element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520119103 CN2826448Y (en) | 2005-09-15 | 2005-09-15 | Insulated monitor for capacitance type insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520119103 CN2826448Y (en) | 2005-09-15 | 2005-09-15 | Insulated monitor for capacitance type insulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2826448Y true CN2826448Y (en) | 2006-10-11 |
Family
ID=37066637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520119103 Expired - Lifetime CN2826448Y (en) | 2005-09-15 | 2005-09-15 | Insulated monitor for capacitance type insulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2826448Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102262203A (en) * | 2011-04-25 | 2011-11-30 | 南京智达电气有限公司 | Device for monitoring insulating state of capacitor sleeve online and method thereof |
| CN102455401A (en) * | 2010-10-20 | 2012-05-16 | 鹤岗电业局 | Device for improving test efficiency of capacitive current transformer |
| 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 |
| CN104347258A (en) * | 2013-07-29 | 2015-02-11 | 北京瑞恒超高压电器研究所(普通合伙) | Insulated and error self-inspecting type full-intelligent current transformer |
| CN110208669A (en) * | 2019-06-26 | 2019-09-06 | 国网浙江省电力有限公司电力科学研究院 | The device and method of insulation degradation between simulation oil immersed type capacitor panel of current transformer |
-
2005
- 2005-09-15 CN CN 200520119103 patent/CN2826448Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102455401A (en) * | 2010-10-20 | 2012-05-16 | 鹤岗电业局 | Device for improving test efficiency of capacitive current transformer |
| 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 |
| CN102262203A (en) * | 2011-04-25 | 2011-11-30 | 南京智达电气有限公司 | Device for monitoring insulating state of capacitor sleeve online and method thereof |
| CN102262203B (en) * | 2011-04-25 | 2013-09-04 | 南京智达电气有限公司 | Device for monitoring insulating state of capacitor sleeve online and method thereof |
| CN104347258A (en) * | 2013-07-29 | 2015-02-11 | 北京瑞恒超高压电器研究所(普通合伙) | Insulated and error self-inspecting type full-intelligent current transformer |
| CN104347258B (en) * | 2013-07-29 | 2016-12-28 | 北京瑞恒超高压电器研究所(普通合伙) | A kind of insulation and error self-monitoring full Intelligent current transformer |
| CN110208669A (en) * | 2019-06-26 | 2019-09-06 | 国网浙江省电力有限公司电力科学研究院 | The device and method of insulation degradation between simulation oil immersed type capacitor panel of current transformer |
| CN110208669B (en) * | 2019-06-26 | 2024-05-10 | 国网浙江省电力有限公司电力科学研究院 | Device and method for simulating insulation degradation between capacitive screens of oil-immersed current transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20061011 |
|
| EXPY | Termination of patent right or utility model |