CN202502194U - High voltage switch cabinet partial discharge on-line monitoring device - Google Patents
High voltage switch cabinet partial discharge on-line monitoring device Download PDFInfo
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- CN202502194U CN202502194U CN2012200170719U CN201220017071U CN202502194U CN 202502194 U CN202502194 U CN 202502194U CN 2012200170719 U CN2012200170719 U CN 2012200170719U CN 201220017071 U CN201220017071 U CN 201220017071U CN 202502194 U CN202502194 U CN 202502194U
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- switch cabinet
- pulse current
- monitoring
- office
- frequency pulse
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Abstract
The utility model discloses a high voltage switch cabinet partial discharge on-line monitoring device. A high frequency pulse current device is clamped at an outlet three-phase cable body of a switch cabinet to obtain a pulse current signal, and whether the switch cabinet has any partial discharge in normal operation is monitored. According to the utility model, the monitoring of the partial discharge in a high voltage switch cabinet is realized, a protection signal is given timely for a partial discharge state harming the safe operation of the switch cabinet, and the security of the operation of a power grid is raised. The utility model has the advantages of simple structure, small volume, good test performance, convenient installation and high reliability, and the sensitivity and accuracy of a partial discharge test are greatly raised.
Description
Technical field
Present technique belongs to monitoring technical field, is specifically related to a kind of local discharge on-line monitoring device.
Background technology
High-tension switch cabinet office puts measuring technology and is mainly ground electric wave (TEV) and two kinds of methods of ultrasound wave (AE) now.Known switch cubicle shelf depreciation on-line testing appearance; Adopt the non-intruding detection mode, through uhf electromagnetic wave (UHF claims the superfrequency method again) and ultrasound wave (AE; Claim acoustic-emission again) external sensing principle; Through adopting ground electric wave method to measure transient state voltage-to-ground (being called for short TEV) and use the ultrahigh frequency method directly to measure the UHF electromagnetic wave signal, the insulation defect of high-tension switch cabinet is carried out online detection and diagnosis, implementation is got up cumbersome; And can cause certain interference to electrical equipment; So to this situation, our utility model a kind of high-tension switch cabinet local discharge on-line monitoring device, adopt the cramp joint of high-frequency pulse current device on the outlet threephase cable body of switch cubicle; Sensor adopts Luo Gaofusi Rogowski lubber ring principle, monitors switch cubicle in the normal shelf depreciation incident that whether took place in service through the joint pulsed current signal that monitoring outlet threephase cable branch is supported the front.It is simple in structure, volume is little, test performance is good, easy for installation, reliability is high, has improved sensitivity and the accuracy of test greatly.Can solve the defective and the deficiency of existing switch cubicle partial discharge monitoring effectively.
The utility model content
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of high-tension switch cabinet local discharge on-line monitoring device comprises that data server (9), office put monitoring terminal (7), high-frequency pulse current device (4); Data server (9) is positioned over transformer station's master-control room, and the instrument cabinet that monitoring terminal (7) is positioned over switch cubicle (1) is put in office, and high-frequency pulse current device (4) cramp joint is on the appearance cable body (2) of switch cubicle (1); Data server (9) is put monitoring terminal (7) with each innings and is adopted 485 communication buses (8) to be connected, and office puts monitoring terminal (7) and adopts coaxial cable for high frequency (5) to be connected with high-frequency pulse current device (4).With high-frequency pulse current device (4) cramp joint on the outlet threephase cable body (2) of switch cubicle (1); Exactly in order to divide the joint of supporting the front to monitor unusual pulsed current signal at outlet threephase cable (2) better timely; Office puts monitoring terminal (7) and adopts coaxial cable for high frequency (5) to carry out the collection of pulsed current signal then, is uploaded to data server (9) through 485 buses (8) again.Put characteristic if the pulsed current signal that monitors satisfies office, then can judge shelf depreciation took place one time in the switch cubicle (1).
Technique scheme can be found out; Because the utility model is implemented the cramp joint of high-frequency pulse current device on the outlet threephase cable body of switch cubicle, the pulsed current signal of the joint of supporting the front in order to monitoring outlet threephase cable branch is to judge whether shelf depreciation took place in the switch cubicle.Therefore the utility model is compared with prior art and is had the following advantages:
With the cramp joint of high-frequency pulse current device on the outlet threephase cable body of switch cubicle, first, save sensor, reduce the monitoring cost; The magnetic field of the power current that second and third phase cable bus produces can be offset, the magnetic vibration of effectively avoiding sensor to produce because of power current.
2. dependable performance and detect effectively adopts the cramp joint of high-frequency pulse current device on the outlet threephase cable body of switch cubicle.
3. easy for installation, quick, reliability is high.Because traditional ultra-high frequency antenna is sent out, can produce uhf electromagnetic wave when putting in monitoring switch cubicle office, attenuation ratio is more serious; Employing with the cramp joint of high-frequency pulse current device on the outlet threephase cable body of switch cubicle; The Pulse Electric that produces fails to be convened for lack of a quorum and propagates along cable; It is less to decay, so can monitor more accurately whether shelf depreciation took place in the switch cubicle, has improved the sensitivity drawn game that test office puts greatly and has put accuracy.
4. the canoe of high-frequency pulse current device adopts sensor Luo Gaofusi Rogowski lubber ring principle, and the monitoring frequency range is 10M-100M, can effectively avoid frequency band in line of electric force, producing carrier signal and low frequency noises below the 10M.
Description of drawings
For clearer explanation the utility model embodiment or technical scheme of the prior art, will do simple introduction to the accompanying drawing of required use among the embodiment or in the description of the Prior Art below.
Fig. 1 is the structural representation of the utility model.
Fig. 2 is high-frequency pulse current device cramp joint demonstration graph on three cable bodies of switch cubicle outlet.
Description of reference numerals:
1. switch group; 2. outlet threephase cable; 3. shielding layer grounding line;
4. high-frequency pulse current device; 5. coaxial cable for high frequency; 6. user;
7. monitoring terminal is put in office; 8.485 bus; 9. data server;
Embodiment
Mainly comprise with reference to Fig. 1 present embodiment: comprise that data server (9), office put monitoring terminal (7), high-frequency pulse current device (4); Data server (9) is positioned over transformer station's master-control room, and the instrument cabinet that monitoring terminal (7) is positioned over switch cubicle (1) is put in office, and high-frequency pulse current device (4) cramp joint is on the outlet threephase cable body (2) of switch cubicle (1); High-frequency pulse current device (4) adopts the work of magnetic coupling scheme, detects not have between loop and the high tension loop directly to connect electrical communication, and field monitoring is put in the office that is highly suitable for high-tension switch cabinet (1).Data server (9) is put monitoring terminal (7) with each innings and is adopted 485 communication buses (8) to be connected, and office puts monitoring terminal (7) and adopts coaxial cable for high frequency (5) to be connected with high-frequency pulse current device (4).Said office puts monitoring terminal (7) and adopts arm processor, generally gathers 10-15 power frequency period.When in the high-tension switch cabinet (1) shelf depreciation being arranged; To have the extremely short pulse current of process along discharge channel produces; The width of these current impulses is generally the ns level; The Pulse Electric that produces fails to be convened for lack of a quorum along cable transmission; On the outlet threephase cable body (2) of switch cubicle (1), high-frequency pulse current device canoe adopts sensor Luo Gaofusi Rogowski lubber ring principle, divides the joint of supporting the front to monitor unusual pulsed current signal at outlet threephase cable (2) better timely with high-frequency pulse current device (4) cramp joint; Office puts monitoring terminal (7) and adopts coaxial cable for high frequency (5) to carry out the collection of pulsed current signal then, is uploaded to data server (9) through 485 buses (8) again.Put characteristic if the pulsed current signal that monitors satisfies office, then can judge shelf depreciation took place one time in the switch cubicle (1), then can arrange interruption maintenance, avoid the further deterioration of equipment, ensure the high-tension switch cabinet safe operation.
Claims (3)
1. high-tension switch cabinet local discharge on-line monitoring device is characterized in that: comprise that data server (9), office put monitoring terminal (7), high-frequency pulse current device (4); Data server (9) is positioned over transformer station's master-control room, and the instrument cabinet that monitoring terminal (7) is positioned over switch cubicle (1) is put in office, and high-frequency pulse current device (4) cramp joint is on the outlet threephase cable body (2) of switch cubicle (1); High-frequency pulse current device (4) adopts the work of magnetic coupling scheme, the pulse current of monitoring threephase cable branch head, and field monitoring is put in the office that is highly suitable for high-tension switch cabinet (1); Data server (9) is put monitoring terminal (7) with each innings and is adopted 485 communication buses (8) to be connected, and office puts monitoring terminal (7) and adopts coaxial cable for high frequency (5) to be connected with high-frequency pulse current device (4).
2. high-tension switch cabinet local discharge on-line monitoring device according to claim 1 is characterized in that: said office puts monitoring terminal (7) and adopts arm processor, generally gathers 10-15 power frequency period.
3. high-tension switch cabinet local discharge on-line monitoring device according to claim 1 is characterized in that: the canoe of said high-frequency pulse current device (4) adopts sensor Luo Gaofusi Rogowski lubber ring principle, and the frequency band signals of monitoring is 10M-100M.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200170719U CN202502194U (en) | 2012-01-13 | 2012-01-13 | High voltage switch cabinet partial discharge on-line monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200170719U CN202502194U (en) | 2012-01-13 | 2012-01-13 | High voltage switch cabinet partial discharge on-line monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202502194U true CN202502194U (en) | 2012-10-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200170719U Expired - Lifetime CN202502194U (en) | 2012-01-13 | 2012-01-13 | High voltage switch cabinet partial discharge on-line monitoring device |
Country Status (1)
| Country | Link |
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| CN (1) | CN202502194U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103558524A (en) * | 2013-11-12 | 2014-02-05 | 国网上海市电力公司 | Detection device for partial discharge of switch cabinet |
| CN106019089A (en) * | 2016-05-12 | 2016-10-12 | 国网上海市电力公司 | Method for carrying out partial discharging determination based on related relationship feature of alternate signals |
| CN108732478A (en) * | 2018-09-10 | 2018-11-02 | 清华四川能源互联网研究院 | Partial discharge of switchgear on-line monitoring system based on superfrequency punching current sensor and method |
-
2012
- 2012-01-13 CN CN2012200170719U patent/CN202502194U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103558524A (en) * | 2013-11-12 | 2014-02-05 | 国网上海市电力公司 | Detection device for partial discharge of switch cabinet |
| CN106019089A (en) * | 2016-05-12 | 2016-10-12 | 国网上海市电力公司 | Method for carrying out partial discharging determination based on related relationship feature of alternate signals |
| CN108732478A (en) * | 2018-09-10 | 2018-11-02 | 清华四川能源互联网研究院 | Partial discharge of switchgear on-line monitoring system based on superfrequency punching current sensor and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Yan Xuewen Document name: Notification of Passing Examination on Formalities |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200116 Address after: 100000 Beijing Haidian District Xixiaokou Road 66 Zhongguancun Dongsheng Science Park Area A Building 3 Co-patentee after: SHAANXI PUBLIC INTELLIGENT SCIENCE & TECHNOLOGY CO., LTD. Patentee after: BEIJING ZHIXIN MICROELECTRONIC SCIENCE & TECHNOLOGY CO., LTD. Address before: 710075 Shaanxi city of Xi'an province high tech Zone Fenghui Road No. 34 Building 1, unit 1, room 11502 Patentee before: SHAANXI PUBLIC INTELLIGENT SCIENCE & TECHNOLOGY CO., LTD. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121024 |