CN202815157U - Online monitoring system for partial discharge of switch cabinet based on ultra-high frequency - Google Patents
Online monitoring system for partial discharge of switch cabinet based on ultra-high frequency Download PDFInfo
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- CN202815157U CN202815157U CN201220482424.2U CN201220482424U CN202815157U CN 202815157 U CN202815157 U CN 202815157U CN 201220482424 U CN201220482424 U CN 201220482424U CN 202815157 U CN202815157 U CN 202815157U
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- switch cabinet
- partial discharge
- ultra
- high frequency
- monitoring system
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Abstract
The utility model relates to an online monitoring system for partial discharge of a switch cabinet based on ultra-high frequency, which comprises an ultra-high frequency sensor arranged on the switch cabinet, wherein the ultra-high frequency sensor is also connected with a monitoring terminal; and the monitoring terminal is also connected with a server. The online monitoring system for partial discharge of a switch cabinet based on ultra-high frequency has the beneficial effects that the ultra-high frequency sensor is stuck on the observation window at the outer side of the cabinet door of the switch cabinet, an antenna is used for receiving UHF electromagnetic wave signals, and then whether partial discharge of the switch cabinet during the normal operation process happens can be monitored. According to the online monitoring system for partial discharge of a switch cabinet based on ultra-high frequency, the frequency band is between 300 M to 1500 MHZ, interference of low frequency band signals can be effectively avoided, the anti- interference capability is strong, the monitored signals are high in frequency, and sensitivity and reliability of partial discharge monitoring of the switch cabinet can be improved greatly. The online monitoring system for partial discharge of a switch cabinet based on ultra-high frequency has the advantages that the structure is simple, the size is small, the test performances are good, the assembly is convenient, reliability is high, and defects and deficiencies of the partial discharge monitoring of the prior switch cabinet can be effectively solved.
Description
Technical field
The utility model relates to the high-tension switch cabinet monitoring technical field, is specifically related to a kind of partial discharge of switchgear on-line monitoring system based on ultrahigh frequency.
Background technology
The high-tension switch cabinet insulated on-line monitoring is exactly partial discharge monitoring with diagnosing effective method, existing partial discharge monitoring instrument, adopt pulse current method to detect impedance or the current sensor that is linked in the measuring circuit, detect in the high-tension switch cabinet because the pulse current that shelf depreciation causes obtains Apparent discharge magnitude.The topmost problem of this method is exactly that antijamming capability is relatively poor, can't be used for on-the-spot on-line monitoring system; Because it is all influential to accuracy, sensitivity, resolution and the dynamic range etc. measured to detect impedance and amplifier, therefore when the electric capacity of sample is larger, will be subject to the restriction of mutual impedance, the sensitivity meeting of testing tool is subject to certain restrictions; Survey frequency is low, frequency band is narrow, and the quantity of information that comprises is less.
The utility model content
For the deficiencies in the prior art, we adopt a kind of partial discharge of switchgear on-line monitoring system based on ultrahigh frequency.
The technical solution of the utility model is: a kind of partial discharge of switchgear on-line monitoring system based on ultrahigh frequency, comprise the uhf sensor that is arranged on the switch cubicle, described uhf sensor also is connected with monitoring terminal, and described monitoring terminal also is connected with server.
Above-mentioned a kind of partial discharge of switchgear on-line monitoring system based on ultrahigh frequency, described uhf sensor is connected with monitoring terminal by concentric cable, the preferred coaxial cable for high frequency of described concentric cable.
Above-mentioned a kind of partial discharge of switchgear on-line monitoring system based on ultrahigh frequency, described monitoring terminal is connected with server by 485 communication buses.
Above-mentioned a kind of partial discharge of switchgear on-line monitoring system based on ultrahigh frequency, described uhf sensor is arranged on the view window of switch cabinet outer side of door.
The beneficial effects of the utility model are: uhf sensor is sticked on the view window of switch cabinet outer side of door, with antenna reception UHF electromagnetic wave signal, come the monitoring switch cabinet in the normal shelf depreciation that whether occured in service.The utility model frequency band has effectively been avoided the interference of low band signal at 300M-1500MHZ, strong interference immunity, and the monitor signal frequency is high, has improved greatly sensitivity and the reliability of partial discharge of switchgear monitoring.It is simple in structure for the utility model, volume is little, test performance is good, easy for installation, reliability is high.Can effectively solve defective and the deficiency of existing partial discharge of switchgear on-line monitoring.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Among the figure: 1, switch group, 2, uhf sensor, 3, coaxial cable for high frequency, 4, monitoring terminal, 5,485 communication buses, 6, server.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
Structural representation of the present utility model as shown in Figure 1 comprises: server 6, monitoring terminal 4, uhf sensor 2.Server 6 is positioned over transformer station's master-control room, and monitoring terminal 4 is positioned over the instrument cabinet of switch cubicle 1, and uhf sensor 2 sticks on the view window of switch cabinet outer side of door.Uhf sensor 2 here is not the coupling of playing electric capacity, but receives the uhf electromagnetic wave signal with antenna, and field monitoring is put in the office that is highly suitable for high-tension switch cabinet 1.Server 6 adopts 485 communication buses 5 to be connected with each monitoring terminal 4, and monitoring terminal 4 adopts coaxial cable for high frequency 3 to be connected with uhf sensor 2.When in the high-tension switch cabinet 1 shelf depreciation being arranged, can inspire the uhf electromagnetic wave signal, can be along air borne, so uhf sensor 2 is sticked on the view window of switch cabinet outer side of door, in fact receive the uhf electromagnetic wave signal with antenna exactly, then monitoring terminal 4 adopts coaxial cable for high frequency 3 to carry out the collection of electromagnetic wave signal, uploads onto the server 6 by 485 communication buses 5 again.Put characteristic if the electromagnetic wave signal that monitors satisfies office, then can judge in the switch cubicle 1 shelf depreciation occurs, then just can arrange interruption maintenance, avoid the further deterioration of equipment, ensure the high-tension switch cabinet safe operation.
The above only is preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (4)
1. partial discharge of switchgear on-line monitoring system based on ultrahigh frequency, it is characterized in that: comprise the uhf sensor that is arranged on the switch cubicle, described uhf sensor also is connected with monitoring terminal, and described monitoring terminal also is connected with server.
2. a kind of partial discharge of switchgear on-line monitoring system based on ultrahigh frequency according to claim 1, it is characterized in that: described uhf sensor is connected with monitoring terminal by concentric cable.
3. a kind of partial discharge of switchgear on-line monitoring system based on ultrahigh frequency according to claim 1 and 2 is characterized in that: described monitoring terminal is connected with server by 485 communication buses.
4. a kind of partial discharge of switchgear on-line monitoring system based on ultrahigh frequency according to claim 1, it is characterized in that: described uhf sensor is arranged on the view window of switch cabinet outer side of door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220482424.2U CN202815157U (en) | 2012-09-21 | 2012-09-21 | Online monitoring system for partial discharge of switch cabinet based on ultra-high frequency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220482424.2U CN202815157U (en) | 2012-09-21 | 2012-09-21 | Online monitoring system for partial discharge of switch cabinet based on ultra-high frequency |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202815157U true CN202815157U (en) | 2013-03-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220482424.2U Expired - Lifetime CN202815157U (en) | 2012-09-21 | 2012-09-21 | Online monitoring system for partial discharge of switch cabinet based on ultra-high frequency |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202815157U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104749510A (en) * | 2015-04-22 | 2015-07-01 | 长安大学 | Pantograph arc online-monitoring and discharge positioning system |
| CN108020764A (en) * | 2017-12-27 | 2018-05-11 | 国家电网公司 | A kind of high voltage electric equipment local discharge on-line monitoring device |
-
2012
- 2012-09-21 CN CN201220482424.2U patent/CN202815157U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104749510A (en) * | 2015-04-22 | 2015-07-01 | 长安大学 | Pantograph arc online-monitoring and discharge positioning system |
| CN108020764A (en) * | 2017-12-27 | 2018-05-11 | 国家电网公司 | A kind of high voltage electric equipment local discharge on-line monitoring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200106 Address after: 710075 no.22202, unit 2, building 7, Tsinghua Science Park, No.65, Keji 2nd Road, hi tech Zone, Xi'an City, Shaanxi Province Patentee after: SHAANXI PUBLIC ELECTRICAL HOLDING Co.,Ltd. Address before: 710075 Digital Building 8, five road 1502, hi tech Zone, Shaanxi, Xi'an Patentee before: SHAANXI PUBLIC INTELLIGENT TECHNOLOGY CO.,LTD. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130320 |