CN212180944U - Switch cabinet partial discharge on-line monitoring system - Google Patents
Switch cabinet partial discharge on-line monitoring system Download PDFInfo
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- CN212180944U CN212180944U CN201922304116.5U CN201922304116U CN212180944U CN 212180944 U CN212180944 U CN 212180944U CN 201922304116 U CN201922304116 U CN 201922304116U CN 212180944 U CN212180944 U CN 212180944U
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- line monitoring
- partial discharge
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Abstract
The utility model discloses a cubical switchboard partial discharge on-line monitoring system relates to discharge monitoring technology field. The utility model comprises a switch cabinet local discharge on-line monitoring device installed in each high-voltage switch cabinet and a plurality of ultrahigh frequency sensors installed at different positions in the high-voltage switch cabinet, wherein each ultrahigh frequency sensor in each high-voltage switch cabinet is electrically connected with the switch cabinet local discharge on-line monitoring device through a coaxial cable respectively, and the switch cabinet local discharge on-line monitoring device in each high-voltage switch cabinet is connected with a server network after being connected with a switch through the Ethernet; the ultrahigh frequency sensor adopts a UHF sensor in a sma joint form, and a magnet adsorption structure is arranged on the surface of the ultrahigh frequency sensor and is adsorbed on the inner wall of a cable chamber in the high-voltage switch cabinet by virtue of magnetic force. The utility model discloses can be real-time accurate carry out real-time supervision to the inside local electric pulse electromagnetic wave signal of cubical switchboard equipment to the partial discharge condition to in the cubical switchboard is evaluateed.
Description
Technical Field
The utility model belongs to the technical field of the monitoring of discharging, especially, relate to a cubical switchboard partial discharge on-line monitoring system.
Background
The insulation strength and the breakdown field strength of an insulator of the power equipment are high, when local discharge occurs in a small range, the breakdown process is fast, local discharge pulse current with a steep rising edge is generated in the breakdown process, the rising time is ns level, and electromagnetic wave signals with the frequency up to GHz are excited. Therefore, the ultrahigh frequency sensor can be used for monitoring the electromagnetic wave signal excited by the partial discharge flow of the electrical equipment to evaluate the partial discharge condition of the switch cabinet.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a cubical switchboard partial discharge on-line monitoring system can be real-time accurate carry out real-time supervision to the inside local electric pulse electromagnetic wave signal of cubical switchboard equipment to the partial discharge condition in to the cubical switchboard evaluates.
In order to solve the technical problem, the utility model discloses a realize through following technical scheme:
the utility model discloses an on-line monitoring system for switch cabinet partial discharge, which comprises a switch cabinet partial discharge on-line monitoring device arranged in each high-voltage switch cabinet and a plurality of ultrahigh frequency sensors arranged at different positions in the switch cabinet;
the ultrahigh frequency sensors in each high-voltage switch cabinet are electrically connected with the switch cabinet partial discharge on-line monitoring device through coaxial cables, and the switch cabinet partial discharge on-line monitoring device in each high-voltage switch cabinet is connected with the switch through the Ethernet and then connected with the server network.
Furthermore, the UHF sensor adopts a sma joint type UHF sensor, and a magnet adsorption structure is arranged on the surface of the UHF sensor and is adsorbed on the inner wall of a cable chamber in the high-voltage switch cabinet by virtue of magnetic force.
Furthermore, the on-line monitoring device for the partial discharge of the switch cabinet adopts an IED type discharge monitoring device in a sma connector form, and is installed on the inner wall of the high-voltage switch cabinet in a wall-mounted manner.
Further, a coaxial cable connected between the ultrahigh frequency sensor and the switch cabinet partial discharge online monitoring device is installed in a cable trench below the high-voltage switch cabinet.
The utility model discloses following beneficial effect has:
the utility model discloses a cubical switchboard partial discharge on-line monitoring system simple structure, the installation of system parts is simple, convenient, the installation effectiveness is high, and the system interference killing feature is strong, and the reliability is high, and simple structure stability is strong, can be real-time accurate carry out real-time supervision to the inside local electric pulse electromagnetic wave signal of cubical switchboard equipment to the partial discharge condition in the cubical switchboard is evaluateed.
Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of the local discharge on-line monitoring system of the switch cabinet of the present invention;
fig. 2 is a topological structure diagram of the switch cabinet partial discharge on-line monitoring system of the present invention;
fig. 3 is a schematic view of a specific installation structure of the on-line monitoring device for partial discharge of the switch cabinet and the ultra-high frequency sensor in the single switch cabinet in fig. 1;
fig. 4 is a schematic diagram of the principle of the installation position and the working state of the ultrahigh frequency sensor and the switch cabinet partial discharge online monitoring device.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "inner", "surface", "inner wall", "below", and the like, indicate positional or orientational relationships and are used merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the components or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Referring to fig. 1-4, the switch cabinet partial discharge on-line monitoring system of the present invention is suitable for integrated installation before the switch cabinet leaves factory or power failure installation of the high voltage switch cabinet in use, and includes a switch cabinet partial discharge on-line monitoring device installed in each high voltage switch cabinet and eight ultra high frequency sensors installed at different positions inside;
and each ultrahigh frequency sensor in each high-voltage switch cabinet is electrically connected with the switch cabinet partial discharge on-line monitoring device through a coaxial cable, and the switch cabinet partial discharge on-line monitoring device in each high-voltage switch cabinet is connected with the switch through the Ethernet and then is connected with the server network.
The ultrahigh frequency sensor adopts a sma joint type UHF sensor, the surface of the ultrahigh frequency sensor is provided with a magnet adsorption structure, the ultrahigh frequency sensor is adsorbed on the inner wall of a cable chamber in the high-voltage switch cabinet by means of magnetic force, and the installation process is simple and convenient. Leading-out wires of the ultrahigh frequency sensors need to penetrate through an interlayer below the switch cabinet and are led out to a cable trench or a cable chamber below the switch cabinet, and the switch cabinet partial discharge online monitoring device is hung on the wall of the cable trench (cable layer); the ultrahigh frequency sensor is used for receiving ultrahigh frequency electromagnetic wave signals excited by partial discharge in the cabinet body. The high-voltage switch cabinet is suitable for integrated installation before the switch cabinet leaves a factory or power failure installation of the high-voltage switch cabinet which is used. The signal frequency band of the ultrahigh frequency sensor is 300 MHz-1.5 GHz (UHF), and the equivalent height is more than or equal to 9 mm.
The on-line monitoring device for the partial discharge of the switch cabinet adopts an IED type discharge monitoring device in a sma connector form, and is installed on the inner wall of the high-voltage switch cabinet in a wall-mounted mode. The ultrahigh frequency partial discharge online monitoring device receives partial discharge signals collected by an ultrahigh frequency sensor with the number of less than or equal to 8 paths through a coaxial cable, the filtering range of the ultrahigh frequency partial discharge online monitoring device is 300 MHz-1.5 GHz (UHF), the detection sensitivity is less than or equal to 5pc, the sampling rate is 20M, the sampling precision is 12 bits, the communication mode with a background is Ethernet, the communication protocol supports 61850, and the number of detection channels is 8.
The coaxial cable connected between the ultrahigh frequency sensor and the switch cabinet partial discharge on-line monitoring device is arranged in a cable trench below the high-voltage switch cabinet.
The signal detected by the ultrahigh frequency sensor is sent to the switch cabinet partial discharge on-line monitoring device through the coaxial cable to be subjected to digital processing of amplification, filtering, detection, digital pulse extraction, digital filtering and partial discharge characteristic quantity calculation, and partial discharge visualization operation, partial discharge judgment, data storage and data uploading are completed.
The utility model discloses a beneficial effect different from prior art includes:
the utility model discloses a cubical switchboard partial discharge on-line monitoring system simple structure, the installation of system parts is simple, convenient, the installation effectiveness is high, and the system interference killing feature is strong, and the reliability is high, and simple structure stability is strong, can be real-time accurate carry out real-time supervision to the inside local electric pulse electromagnetic wave signal of cubical switchboard equipment to the partial discharge condition in the cubical switchboard is evaluateed.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims (4)
1. The utility model provides a cubical switchboard partial discharge on-line monitoring system, includes the cubical switchboard partial discharge on-line monitoring device who installs in each high tension switchgear and installs in a plurality of hyperfrequency sensors of inside different positions department which characterized in that:
the ultrahigh frequency sensors in each high-voltage switch cabinet are electrically connected with the switch cabinet partial discharge on-line monitoring device through coaxial cables, and the switch cabinet partial discharge on-line monitoring device in each high-voltage switch cabinet is connected with the switch through the Ethernet and then connected with the server network.
2. The on-line monitoring system for the partial discharge of the switch cabinet as claimed in claim 1, wherein the UHF sensor is a UHF sensor in the form of a sma connector, and a magnet adsorption structure is arranged on the surface of the UHF sensor and is adsorbed on the inner wall of a cable chamber in the high-voltage switch cabinet by means of magnetic force.
3. The on-line monitoring system for the partial discharge of the switch cabinet as claimed in claim 1, wherein the on-line monitoring device for the partial discharge of the switch cabinet is an IED model discharge monitoring device in a sma connector form, and is mounted on the inner wall of the high-voltage switch cabinet in a wall-mounted manner.
4. The on-line monitoring system for the partial discharge of the switch cabinet according to claim 1, wherein a coaxial cable connected between the ultrahigh frequency sensor and the on-line monitoring device for the partial discharge of the switch cabinet is installed in a cable trench below the high voltage switch cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922304116.5U CN212180944U (en) | 2019-12-20 | 2019-12-20 | Switch cabinet partial discharge on-line monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922304116.5U CN212180944U (en) | 2019-12-20 | 2019-12-20 | Switch cabinet partial discharge on-line monitoring system |
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| Publication Number | Publication Date |
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| CN212180944U true CN212180944U (en) | 2020-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922304116.5U Active CN212180944U (en) | 2019-12-20 | 2019-12-20 | Switch cabinet partial discharge on-line monitoring system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112986767A (en) * | 2021-03-10 | 2021-06-18 | 浙江徕米物联网科技有限公司 | On-line monitoring system is put in distribution room cubical switchboard equipment office |
| CN113030664A (en) * | 2021-03-16 | 2021-06-25 | 贵州电网有限责任公司 | Universal cradle head for switch cabinet partial discharge monitoring device |
-
2019
- 2019-12-20 CN CN201922304116.5U patent/CN212180944U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112986767A (en) * | 2021-03-10 | 2021-06-18 | 浙江徕米物联网科技有限公司 | On-line monitoring system is put in distribution room cubical switchboard equipment office |
| CN113030664A (en) * | 2021-03-16 | 2021-06-25 | 贵州电网有限责任公司 | Universal cradle head for switch cabinet partial discharge monitoring device |
| CN113030664B (en) * | 2021-03-16 | 2022-08-26 | 贵州电网有限责任公司 | Universal cradle head for switch cabinet partial discharge monitoring device |
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