CN203054160U - TEV sensor used in partial discharge detection of switch cabinet - Google Patents
TEV sensor used in partial discharge detection of switch cabinet Download PDFInfo
- Publication number
- CN203054160U CN203054160U CN 201220564813 CN201220564813U CN203054160U CN 203054160 U CN203054160 U CN 203054160U CN 201220564813 CN201220564813 CN 201220564813 CN 201220564813 U CN201220564813 U CN 201220564813U CN 203054160 U CN203054160 U CN 203054160U
- Authority
- CN
- China
- Prior art keywords
- shielding case
- cavity
- tev
- shielding
- tev sensor
- Prior art date
- 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 - Lifetime
Links
Images
Abstract
The utility model relates to a TEV sensor used in partial discharge detection of a switch cabinet, and belongs to the technical field of electrical equipment detection instruments. Through shielding effect of a metal shielding case, a capacity coupler, a circuit board and a sensor power supply and other devices are disposed in the shielding case, so that the TEV sensor has relatively good anti-interference capability.
Description
Technical field
The utility model relates to a kind of TEV sensor that is applied to the switch cubicle Partial Discharge Detection, belongs to power equipment detecting instrument technical field.
Background technology
High-tension switch cabinet is the important component part of system for distribution network of power, and its safe and stable operation is directly connected to economic and social benefits.The defective that exists in manufacturing and the installation process is subjected to electric field force, thermal effect, chemical corrosion and other Effect of Environmental in the long-time running process, might cause insulation breakdown, constitutes potential safety hazard.Therefore, switch cubicle being carried out insulating property detect, in time find incipient fault, is the normal operation that guarantees switch cubicle, reduces maintenance frequency, improves the key of Operation of Electric Systems reliability.
Local discharge characteristic is the important parameter of reflection insulation of electrical installation performance quality.When high voltage electric equipment generation shelf depreciation, the electromagnetic wave of discharge generation blazes abroad by the seam crossing of metal cabinet or the liner of gas-insulated switch, produces current pulse signal simultaneously.The TEV method catches this signal by capacitive coupled sensors exactly, thereby draws amplitude and the discharge pulse frequency of shelf depreciation.The TEV method is easy to use, can chargedly carry out Noninvasive and detect.
The utility model content
This uses novel purpose to be to provide the sensor of a kind of detector switch cabinet transient state voltage-to-ground (TEV) signal, shielding action by metal shielding, equipment such as capacity coupler, circuit board and probe power are placed in the shielding case, make equipment have stronger antijamming capability.
The technical solution of the utility model is: a kind of TEV sensor that is applied to the switch cubicle Partial Discharge Detection, comprise metal shielding, insulation course, capacity coupler, circuit board and probe power, it is characterized in that: described metal shielding is made up of shielding case head and the columniform cavity of circle, described cavity is connected with the shielding case head by screw thread, described insulation course and capacity coupler are installed in the shielding case head, and described circuit board and probe power are positioned at circular cylindrical cavity and are fixed on the cavity wall.Its beneficial effect is: signals collecting and treatment circuit place metal shielding, and antijamming capability is strong.
Aforesaid TEV sensor is characterized in that: described metal shielding is the Al-alloy metal shielding case.
Aforesaid TEV sensor is characterized in that: described shielding case head is central to be circular port, six apertures that evenly distribute around the circular port, embedded permanent magnet.Its beneficial effect is: absorption affinity is strong, can be adsorbed on the switch cubicle housing, and is easy to use.
Aforesaid TEV sensor is characterized in that: described cavity length 18cm.Its beneficial effect is: conveniently moving in the test of switch cubicle shelf depreciation, raise the efficiency.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the sectional view of metal shielding.
Embodiment
Accompanying drawing 1 description of symbols: 11-switch cabinet surface, 12-insulation course, 13-capacity coupler, 14-concentric cable, 15-circuit board, 16-output port
Accompanying drawing 2 description of symbols: 21-shielding case head, 22-shielding case cavity, 23-permanent magnet mounting holes, 24-output port mounting hole
Below in conjunction with accompanying drawing, to originally being that strength is described further.
From Fig. 1 and Fig. 2 as can be seen, this TEV sensor mainly is made up of metal shielding, insulation course 12, capacity coupler 13, concentric cable 14, circuit board 15 and output port.
Fig. 1 is structural representation of the present utility model.Capacity coupler 13 is embedded in insulation course 12, capacity coupler 13 links to each other by concentric cable 14 with circuit board 15, circuit board 15 is made up of power supply, filter circuit, amplifier circuit and linear detection circuit, signal processing circuit adopts the envelope detection technology to obtain the enveloping curve of the high-frequency signal of shelf depreciation generation, gets final product features such as picked up signal peak value and phase place by the general data capture card.Capacity coupler 13 is the flat capacitor coupling mechanism, the material of insulation course 12 is teflon, when sensor places the switch cubicle metal surface, capacity coupler 13 forms capacitive coupling with the switch cubicle metal surface by insulation course 12, the current pulse signal that the inner shelf depreciation of receiving key cabinet produces at cabinet.The signal of the signal that capacity coupler 13 receives after circuit board 15 is handled exported by output port.
Fig. 2 is the sectional view of TEV sensor metal shielding case of the present utility model.Metal shielding is made up of shielding case head 21 and the columniform cavity 22 of circle, cavity 22 is connected with shielding case head 21 by screw thread, insulation course 12 and capacity coupler 13 are installed in the shielding case head 21, circuit board 15 and probe power are positioned at circular cylindrical cavity 22, by being bolted on the cavity wall.Permanent magnet is installed in the permanent magnet mounting holes 23, and output port 16 is positioned at output port mounting hole 24.Metal shielding head 21 central authorities are circular port, and embedded polyfluortetraethylene plate is the capacitive coupling medium, and namely insulation course 12.Even six apertures that distribute around the circular port, embedded permanent magnet can be adsorbed on the switch cubicle housing, and is easy to use.
For the ease of movement, it is longer that the shielding cavity cavity can design, and as the long 18cm of shielding cavity cavity in the present embodiment, for the light antijamming capability of taking into account device simultaneously, the metal shielding of present embodiment can be the Al-alloy metal shielding case.
The beneficial effects of the utility model are: signals collecting and treatment circuit place the Al-alloy metal shielding case, and antijamming capability is strong; The embedded 6 blocks of permanent magnets of sensor front end, absorption affinity is strong, and is easy to use; The shielding cavity cavity length reaches 18cm, and conveniently moving in the test of switch cubicle shelf depreciation is raised the efficiency.
Claims (4)
1. TEV sensor that is applied to the switch cubicle Partial Discharge Detection, comprise metal shielding, insulation course, capacity coupler, circuit board and probe power, it is characterized in that: described metal shielding is made up of shielding case head and the columniform cavity of circle, described cavity is connected with the shielding case head by screw thread, described insulation course and capacity coupler are installed in the shielding case head, and described circuit board and probe power are positioned at circular cylindrical cavity and are fixed on the cavity wall.
2. TEV sensor as claimed in claim 1, it is characterized in that: described metal shielding is the Al-alloy metal shielding case.
3. TEV sensor as claimed in claim 1 is characterized in that: described shielding case head central authorities are circular port, six apertures that evenly distribute around the circular port, embedded permanent magnet.
4. as claim 1,2 or 3 described TEV sensors, it is characterized in that: described cavity length 18cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220564813 CN203054160U (en) | 2012-10-31 | 2012-10-31 | TEV sensor used in partial discharge detection of switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220564813 CN203054160U (en) | 2012-10-31 | 2012-10-31 | TEV sensor used in partial discharge detection of switch cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203054160U true CN203054160U (en) | 2013-07-10 |
Family
ID=48737100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220564813 Expired - Lifetime CN203054160U (en) | 2012-10-31 | 2012-10-31 | TEV sensor used in partial discharge detection of switch cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203054160U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103529309A (en) * | 2013-10-21 | 2014-01-22 | 国家电网公司 | Ultrahigh-frequency sensor based on high-voltage shunt reactor |
| CN105738786A (en) * | 2016-03-30 | 2016-07-06 | 合肥工业大学智能制造技术研究院 | GIS ultrahigh frequency partial discharge signal collection device which shields external interface |
| CN107525958A (en) * | 2017-07-05 | 2017-12-29 | 中国电力科学研究院 | A kind of transient state device and method that induced voltage measures over the ground being used for power equipment |
| CN108169647A (en) * | 2018-03-08 | 2018-06-15 | 云南电网有限责任公司电力科学研究院 | A kind of PD meter for being used to detect high-tension switch cabinet |
| CN112630604A (en) * | 2020-11-13 | 2021-04-09 | 广东电网有限责任公司广州供电局 | Partial discharge detection device based on capacitive sensor |
| CN113884848A (en) * | 2021-09-23 | 2022-01-04 | 浙江华云电力工程设计咨询有限公司 | Anti-transient pulse interference switch cabinet partial discharge detection system |
-
2012
- 2012-10-31 CN CN 201220564813 patent/CN203054160U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103529309A (en) * | 2013-10-21 | 2014-01-22 | 国家电网公司 | Ultrahigh-frequency sensor based on high-voltage shunt reactor |
| CN103529309B (en) * | 2013-10-21 | 2015-09-16 | 国家电网公司 | Based on the superfrequency sensor of high-voltage shunt reactor |
| CN105738786A (en) * | 2016-03-30 | 2016-07-06 | 合肥工业大学智能制造技术研究院 | GIS ultrahigh frequency partial discharge signal collection device which shields external interface |
| CN105738786B (en) * | 2016-03-30 | 2019-02-26 | 合肥工业大学智能制造技术研究院 | A kind of GIS high-frequency local discharging signal pickup assembly shielding external interference |
| CN107525958A (en) * | 2017-07-05 | 2017-12-29 | 中国电力科学研究院 | A kind of transient state device and method that induced voltage measures over the ground being used for power equipment |
| CN108169647A (en) * | 2018-03-08 | 2018-06-15 | 云南电网有限责任公司电力科学研究院 | A kind of PD meter for being used to detect high-tension switch cabinet |
| CN112630604A (en) * | 2020-11-13 | 2021-04-09 | 广东电网有限责任公司广州供电局 | Partial discharge detection device based on capacitive sensor |
| CN113884848A (en) * | 2021-09-23 | 2022-01-04 | 浙江华云电力工程设计咨询有限公司 | Anti-transient pulse interference switch cabinet partial discharge detection system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203054160U (en) | TEV sensor used in partial discharge detection of switch cabinet | |
| CN103197209B (en) | Partial discharge work frequency synchronization signal sensing device | |
| CN201955434U (en) | Local discharge detection TEV (transient earth voltage) sensor of high-voltage switch cabinet | |
| CN208654277U (en) | A kind of high-tension switch cabinet local discharge on-line monitoring device | |
| CN202916392U (en) | Online monitoring system for partial discharge of switch cabinet based on pulse current method and grounding electric wave method | |
| CN103712551A (en) | Power distribution network transformer low-voltage winding deformation on-line monitoring device and method | |
| CN203826281U (en) | Vacuum degree monitoring device of vacuum circuit breaker | |
| CN202583397U (en) | A partial discharge monitoring and positioning system of high-tension switch cabinet | |
| CN103399593A (en) | System and method for inactive and wireless temperature measuring and control of high-voltage switch cabinet | |
| CN103713244B (en) | A kind of live detection method for distribution cable shelf depreciation | |
| CN203117345U (en) | Circuit detecting grounding state of operating cable via high-frequency signal injection | |
| CN203981829U (en) | Local discharge detection device in a kind of high-tension switch cabinet | |
| CN203798466U (en) | Operating temperature measuring device based on surface acoustic wave for conductor connection point in switch cabinet | |
| CN205450181U (en) | A portable equipment for high tension switchgear's local discharge on -line monitoring | |
| CN202471901U (en) | Partial discharge ultrahigh frequency detecting system for switch cabinet | |
| CN102590719A (en) | Surface mounted device (SMD) sensor device for detecting local discharge of power cable terminal head | |
| CN210199238U (en) | Intelligent sensor integrating monitoring of leakage current and partial discharge of sleeve | |
| CN210199237U (en) | Ring main unit partial discharge detection device based on transformation of electrified display | |
| CN203643559U (en) | Sensing device for detecting partial discharge inside GIS through UHF method | |
| CN104330626A (en) | Power grid harmonic wave monitor | |
| CN203502546U (en) | GIS partial discharging on-line monitoring device | |
| CN202178471U (en) | Cable connector for built-in coupler and coupler thereof | |
| CN204964691U (en) | GIS (gas -insulated switchgear) partial discharge monitoring device | |
| CN202502194U (en) | High voltage switch cabinet partial discharge on-line monitoring device | |
| CN203848796U (en) | On-line monitoring device of power distribution network transformer low-voltage winding deformation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: WUHAN NARI LIMITED LIABILITY COMPANY OF STATE GRID Effective date: 20130624 Owner name: DONGGUAN POWER SUPPLY BUREAU, GUANGDONG POWER GRID Free format text: FORMER OWNER: WUHAN NARI LIMITED LIABILITY COMPANY OF STATE GRID ELECTRIC POWER RESEARCH INSTITUTE Effective date: 20130624 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 430074 WUHAN, HUBEI PROVINCE TO: 523000 DONGGUAN, GUANGDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130624 Address after: Study on the test of 523000 in Guangdong city of Dongguan province Dongcheng District East Road No. 219 Patentee after: Dongguan Power Supply Bureau,Guangdong Power Grid Corporation Patentee after: Wuhan Nari Limited Liability Company of State Grid Electric Power Research Institute Address before: 430074 Hubei city of Wuhan province Luo Yu Road, No. 143 Patentee before: Wuhan Nari Limited Liability Company of State Grid Electric Power Research Institute |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130710 |