CN103558523A - Detection device for partial discharge of switch cabinet - Google Patents

Detection device for partial discharge of switch cabinet Download PDF

Info

Publication number
CN103558523A
CN103558523A CN201310559585.6A CN201310559585A CN103558523A CN 103558523 A CN103558523 A CN 103558523A CN 201310559585 A CN201310559585 A CN 201310559585A CN 103558523 A CN103558523 A CN 103558523A
Authority
CN
China
Prior art keywords
sensor
partial discharge
phase
switchgear
pick
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.)
Pending
Application number
CN201310559585.6A
Other languages
Chinese (zh)
Inventor
朱钦
薛明
殷怡杰
朱启扬
徐力扬
黄成军
郭灿新
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHANGHAI HUACHENG ELECTRICAL TECHNOLOGY Co Ltd
State Grid Shanghai Electric Power Co Ltd
Original Assignee
SHANGHAI HUACHENG ELECTRICAL TECHNOLOGY Co Ltd
State Grid Shanghai Electric Power Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SHANGHAI HUACHENG ELECTRICAL TECHNOLOGY Co Ltd, State Grid Shanghai Electric Power Co Ltd filed Critical SHANGHAI HUACHENG ELECTRICAL TECHNOLOGY Co Ltd
Priority to CN201310559585.6A priority Critical patent/CN103558523A/en
Publication of CN103558523A publication Critical patent/CN103558523A/en
Pending legal-status Critical Current

Links

Abstract

The invention discloses a detection device for partial discharge of a switch board in the field of power grids. The detection device for partial discharge of the switch board comprises the switch cabinet, three-phase cables, an ultrasonic sensor, an ultrahigh-frequency sensor, an oscilloscope and a computer. The switch cabinet comprises a cabinet wall and three-phase prefabricated heads. Each single-phase cable of the three-phase cables is correspondingly connected with one corresponding single-phase prefabricated head of the three-phase prefabricated heads. The ultrasonic sensor is located on the cabinet wall of the switch cabinet. The ultrahigh-frequency sensor is arranged on the periphery of the three-phase prefabricated heads. The ultrasonic sensor and the ultrahigh-frequency sensor are connected with the oscilloscope. The detection device for partial discharge of the switch board further comprises high-frequency current sensors and a spectrum analyzer. Each high-frequency current sensor is fixed to a shielding layer of one corresponding single-phase cable of the three-phase cables. The high-frequency current sensors are connected with the spectrum analyzer. The spectrum analyzer and the oscilloscope are connected with the computer. Both the ultrasonic sensor and the ultrahigh-frequency sensor can move.

Description

A kind of partial discharge of switchgear pick-up unit
Technical field
The present invention relates to a kind of partial discharge of switchgear pick-up unit in electrical network field.
Background technology
The insulating capacity of switch cubicle is the key factor that determine switch cabinet can safe and stable operation.The safe operation of electric system in the insulation fault serious threat that the deficiency of switch cubicle field testing procedure and the switch cubicle putting into operation occur.Partial Discharge Detection is the effective means of reactive switches cabinet insulation status, is also the focus of current research.Detection for partial discharge of switchgear, conventional is acoustoelectric wave checkout equipment at present, adopt ultrasonic sensor to be connected oscillograph with uhf sensor, oscillograph connects computing machine, acoustoelectric wave checkout equipment directly characterizes the intensity of shelf depreciation activity with the form of dB, have simple to operately, the clear and definite feature of rule, is subject to field operator's welcome deeply.Yet shelf depreciation is faint electrical phenomena, in testing process, be very easily subject to the impact of external interference, if can not effectively identify, disturb and got rid of, by the correctness and the validity that are difficult to guarantee that Partial Discharge Data is analyzed.In addition, the positioning function of existing acousto-electric detection equipment is simple, can only realize the coarse localization of switch cabinet body in single point of discharge situation, for the accurate location phasing of many point of discharges and inside switch cabinet, all be difficult to realize, this has greatly reduced the validity of location and the efficiency of maintenance.For this reason, the application of other detection technique of expansion research aspect switch cubicle is necessary.
Summary of the invention
The object of the invention is, in order to overcome the deficiencies in the prior art, provides a kind of partial discharge of switchgear pick-up unit, and it can accurately locate phasing to partial discharge of switchgear, and accurately determines the type of partial discharge of switchgear.
A kind of technical scheme that realizes above-mentioned purpose is: a kind of partial discharge of switchgear pick-up unit, comprise switch cubicle and three-phase electricity cable, and ultrasonic sensor, uhf sensor, oscillograph and computing machine, described switch cubicle comprises cabinet wall and the prefabricated head of three-phase, the corresponding connection of each single-phase prefabricated head in the prefabricated head of each single-phase electricity cable in described three-phase electricity cable and described three-phase; Described ultrasonic sensor is positioned on the cabinet wall of described switch cubicle; Described uhf sensor is positioned at the prefabricated head of described three-phase around; Described ultrasonic sensor is all connected described oscillograph with described uhf sensor, and described oscillograph connects described computing machine; It is characterized in that:
It also comprises High Frequency Current Sensor and spectrum analyzer; Described High Frequency Current Sensor is fixed on the screen layer of each single-phase electricity cable in described three-phase electricity cable, and described High Frequency Current Sensor connects described spectrum analyzer;
Described spectrum analyzer connects described computing machine;
Described ultrasonic sensor and described uhf sensor are all movably.
Further, described High Frequency Current Sensor is by being clamped on the screen layer of each single-phase electricity cable in three-phase electricity cable.
Further, described three-phase electricity cable is provided with shielding layer grounding line, on described shielding layer grounding line, is fixed with High Frequency Current Sensor.
Further, on described three-phase electricity cable, be also provided with armor, described armor is provided with armor ground wire, on described armor ground wire, is fixed with High Frequency Current Sensor.
Further, described High Frequency Current Sensor is by being clamped on the shielding layer grounding line of described three-phase electricity cable and/or on armor ground wire.
Further, described oscillograph is TDS680 type digital storage oscilloscope.
Further, described spectrum analyzer is IFR2398 type spectrum analyzer.
Further, described ultrasonic sensor is all connected with described oscillograph by ZigBee-network with described uhf sensor.
Further, described High Frequency Current Sensor is connected by bus or ZigBee-network with described spectrum analyzer.
Further, described oscillograph is all connected with described computing machine by bus or Wlan wireless network with described spectrum analyzer.
Adopted the technical scheme of a kind of partial discharge of switchgear pick-up unit of the present invention, be that partial discharge of switchgear pick-up unit comprises ultrasonic sensor, High Frequency Current Sensor, uhf sensor, oscillograph, spectrum analyzer and computing machine, described High Frequency Current Sensor is fixed on the screen layer of each single-phase electricity cable in three-phase electricity cable, described High Frequency Current Sensor connects described spectrum analyzer, describedly state ultrasonic sensor and described uhf sensor is all movably, and all connect described oscillograph, described oscillograph and described spectrum analyzer are all connected the technical scheme of described computing machine.Its technique effect is: efficiently solve interference problem in partial discharge of switchgear testing process, improve the confidence level of testing result; And can accurately locate phasing to discharge position, the registration of discharge position is arrived to centimetre-sized.And the type of definite shelf depreciation, greatly facilitate the operation conditions that engineering technical personnel grasp switch cubicle.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of partial discharge of switchgear pick-up unit of the present invention.
Embodiment
Refer to Fig. 1, the present inventor is in order to understand technical scheme of the present invention better, below by embodiment particularly, and is described in detail by reference to the accompanying drawings:
Refer to Fig. 1, a kind of partial discharge of switchgear pick-up unit of the present invention, comprise switch cubicle 1 and three-phase electricity cable 2, switch cubicle 1 comprises prefabricated 12 of cabinet wall 11 and three-phase, the corresponding connection of each single-phase prefabricated head in prefabricated 12 of each single-phase electricity cable in three-phase electricity cable 2 and three-phase; Partial discharge of switchgear pick-up unit also comprises ultrasound wave (AE) sensor 3, high-frequency current (HFCT) sensor 4, ultrahigh frequency (UHF) sensor 5, oscillograph 6, spectrum analyzer 7 and computing machine 8.
Wherein, ultrasonic sensor 3 is positioned on the cabinet wall 11 of switch cubicle 1, and is movably; Uhf sensor 5 is positioned at prefabricated 12 of three-phase around, and is also movably.Ultrasonic sensor 3 is all connected oscillograph 6 with uhf sensor 5.
When the inner shelf depreciation of power equipment occurs, the rising edge of discharge pulse is very steep, and along <1ns current rise time in shelf depreciation path, pulse width mostly is nanosecond, can encourage ultrahigh frequency electromagnetic signal more than 1GHz.Ultrahigh frequency electromagnetic signal is at spatial, and the uhf sensor 5 around of prefabricated 12 of the three-phase by being arranged on switch cubicle 1 just can receive ultrahigh frequency electromagnetic signal.In addition, generation along with electric discharge, being accompanied by explosion shape ultrasonic signal produces, and propagate to surrounding medium, by the ultrasonic sensor 3 being arranged on the cabinet wall 11 of switch cubicle 1, accept this ultrasonic signal, ultrasonic sensor 3 is converted to ultrasonic electrical signal by ultrasonic signal, and ultrasonic sensor 3 and uhf sensor 5 can be measured the local discharging level in equipment.
In ultrahigh frequency electromagnetic signal propagation process, for the uhf sensor 5 of diverse location, the time that different uhf sensors 5 receive ultrahigh frequency electromagnetic signal is different.It is poor that the positioning principle of shelf depreciation point is that uhf sensor 5 receives ultrahigh frequency electromagnetic signal life period, at switch cubicle 1, there is partial discharge position, be the two ends of prefabricated 12 of three-phase, in Fig. 1, for two ends, left and right, respectively place a uhf sensor 5, and whether the ultrahigh frequency electromagnetic signal of observing 5 receptions of two uhf sensors on oscillograph 6 is poor if having time, there is the position that can calculate shelf depreciation point, do not change the wherein position of any one uhf sensor 5, until it is poor to observe two ultrahigh frequency electromagnetic signal life periods on oscillograph 6.Then calculate the position of shelf depreciation point.Yet owing to being subject to the impact of the factors such as ultrahigh frequency electromagnetic signal propagation path and uhf sensor 5 positions, the often accurately identification of ultrahigh frequency electromagnetic signal initial time, can only carry out Primary Location, is difficult to realize the accurate location of shelf depreciation.
Ultrasound wave location is by measuring the ultrasonic signal of local discharge generation, to propagate into the sonac 3 of a plurality of diverse locations on the cabinet wall 11 that is positioned at switch cubicle 1, and on oscillograph 6, observe each ultrasonic sensor 3 and produce the mistiming between ultrasonic electrical signal on oscillograph 6, according to mistiming and ultrasonic propagation velocity, utilize the accurate location of the method calculating shelf depreciation point of space analysis geometry, realize the location of shelf depreciation point, although it is larger that ultrasound wave is decayed in power equipment common used material medium, measure effective range less, but can be on uhf sensor 5 carries out basis that shelf depreciation point is tentatively decided to be, realize the accurate location of shelf depreciation point.
In the present invention, first adopt 5 pairs of local point of discharges of uhf sensor to carry out one-time positioning analysis, determine the approximate range of shelf depreciation point, then adopt supersonic sensing 3 devices to carry out secondary positioning analysis, realize the accurate location of shelf depreciation point.Like this owing to detecting ultrahigh frequency electromagnetic signal and the ultrasonic electrical signal of shelf depreciation simultaneously, therefore by the signal analysis that two kinds of sensors are detected, can more effectively get rid of on-the-spot interference, improve the accuracy of shelf depreciation positioning precision and Classifcation of flaws.
The object of design is like this: uhf sensor 5 can detect the excitation signal being produced by shelf depreciation in switch cubicle 1, it is ultrahigh frequency electromagnetic signal, this excitation signal is that frequency is at UHF frequency band, it is the electromagnetic wave of 300M~3GHz, due to common undesired signal, its frequency is all under 300MHz, and the ultrahigh frequency electromagnetic signal that uhf sensor 5 detects has unrivaled interference free performance.
In the present embodiment, the oscillograph 6 of employing is TDS680 type digital storage oscilloscope, and the waveform of the ultrasonic electrical signal being gathered with ultrahigh frequency electromagnetic signal that uhf sensor 5 is gathered and ultrasonic sensor 3 carries out real-time storage and calls.Ultrasonic sensor 3 is all connected with oscillograph 6 by ZigBee-network with uhf sensor 5, improves the property easy to use of a kind of partial discharge of switchgear pick-up unit of the present invention.
High Frequency Current Sensor 4 is fixed on the screen layer of each single-phase electricity cable in three-phase electricity cable 2, on the body of three-phase electricity cable 2, also can be fixed on the shielding layer grounding line 21 of three-phase electricity cable 2 or on armor ground wire 22.All High Frequency Current Sensor 4 connect spectrum analyzer 7; The ,Jiang partial discharge pulse of partial discharge pulse that High Frequency Current Sensor 4 utilizes the detection of electromagnetic induction coupling principle to flow to the earth is converted into HF voltage pulse and passes to spectrum analyzer 7.Waveform and the phase place of the HF voltage pulse receiving according to spectrum analyzer 7, computing machine 8 can carry out accurate phasing location to local point of discharge, and definite electric discharge type.Can certainly manually to local point of discharge, carry out accurate phasing location according to the waveform and the phase place that show on spectrum analyzer 7, and definite electric discharge type.In the present embodiment, spectrum analyzer 7 is IFR2398 type spectrum analyzer, detects the accuracy of HF voltage pulse to improve spectrum analyzer 7.High Frequency Current Sensor 4 is connected by bus or ZigBee-network with spectrum analyzer 7, wherein uses after Zigbee network, and the use of a kind of partial discharge of switchgear pick-up unit of the present invention is more convenient.
Oscillograph 6 is all connected with computing machine 8 by bus or Wlan wireless network with spectrum analyzer 7, wherein uses Wlan network can realize the remote monitoring of a kind of partial discharge of switchgear pick-up unit of the present invention to partial discharge of switchgear.
Pincerlike High Frequency Current Sensor folder (not shown) makes High Frequency Current Sensor 4 by being clamped to cable body or the shielding layer grounding line 21 of three-phase electricity cable 2, or on armor ground wire 22.The partial discharge pulse that this High Frequency Current Sensor 4 can be extracted switch cubicle 1 self, can obtain again the high frequency partial discharge pulse from three-phase electricity cable 2.
Those of ordinary skill in the art will be appreciated that, above embodiment is only for the present invention is described, and be not used as limitation of the invention, as long as within the scope of connotation of the present invention, to the variation of the above embodiment, modification, all will drop within the scope of claims of the present invention.

Claims (10)

1. a partial discharge of switchgear pick-up unit, comprise switch cubicle (1) and three-phase electricity cable (2), and ultrasonic sensor (3), uhf sensor (5), oscillograph (6) and computing machine (8), described switch cubicle (1) comprises cabinet wall (11) and the prefabricated head of three-phase (12), each single-phase electricity cable in described three-phase electricity cable (2) and each single-phase prefabricated corresponding connection in the prefabricated head of described three-phase (12); Described ultrasonic sensor (3) is positioned on the cabinet wall (11) of described switch cubicle (1); Described uhf sensor (5) is positioned at the prefabricated head of described three-phase (12) around; Described ultrasonic sensor (3) is all connected described oscillograph (6) with described uhf sensor (5), and described oscillograph (6) connects described computing machine (8); It is characterized in that:
It also comprises High Frequency Current Sensor (4) and spectrum analyzer (7); Described High Frequency Current Sensor (4) is fixed on the screen layer of each single-phase electricity cable in described three-phase electricity cable (2), and described High Frequency Current Sensor (4) connects described spectrum analyzer (7);
Described spectrum analyzer (7) connects described computing machine (8);
Described ultrasonic sensor (3) and described uhf sensor (5) are all movably.
2. a kind of partial discharge of switchgear pick-up unit according to claim 1, is characterized in that: described High Frequency Current Sensor (4) is by being clamped on the screen layer of each single-phase electricity cable in three-phase electricity cable (2).
3. a kind of partial discharge of switchgear pick-up unit according to claim 1, is characterized in that: described three-phase electricity cable (2) is provided with shielding layer grounding line (21), is fixed with High Frequency Current Sensor (4) on described shielding layer grounding line (21).
4. a kind of partial discharge of switchgear pick-up unit according to claim 3, it is characterized in that: on described three-phase electricity cable (2), be also provided with armor, described armor is provided with armor ground wire (22), is fixed with High Frequency Current Sensor (4) on described armor ground wire (22).
5. a kind of partial discharge of switchgear pick-up unit according to claim 4, is characterized in that: described High Frequency Current Sensor (4) is by being clamped on the upper and/or armor ground wire (22) of the shielding layer grounding line (21) of described three-phase electricity cable (2).
6. according to a kind of partial discharge of switchgear pick-up unit described in any one in claim 1 to 5, it is characterized in that: described oscillograph (6) is TDS680 type digital storage oscilloscope.
7. according to a kind of partial discharge of switchgear pick-up unit described in any one in claim 1 to 5, it is characterized in that: described spectrum analyzer (7) is IFR2398 type spectrum analyzer.
8. according to a kind of partial discharge of switchgear pick-up unit described in any one in claim 1 to 5, it is characterized in that: described ultrasonic sensor (3) is all connected with described oscillograph (6) by ZigBee-network with described uhf sensor (5).
9. according to a kind of partial discharge of switchgear pick-up unit described in any one in claim 1 to 5, it is characterized in that: described High Frequency Current Sensor (4) is connected by bus or ZigBee-network with described spectrum analyzer (7).
10. according to a kind of partial discharge of switchgear pick-up unit described in any one in claim 1 to 5, it is characterized in that: described oscillograph (6) is all connected with described computing machine (8) by bus or Wlan wireless network with described spectrum analyzer (7).
CN201310559585.6A 2013-11-12 2013-11-12 Detection device for partial discharge of switch cabinet Pending CN103558523A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310559585.6A CN103558523A (en) 2013-11-12 2013-11-12 Detection device for partial discharge of switch cabinet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310559585.6A CN103558523A (en) 2013-11-12 2013-11-12 Detection device for partial discharge of switch cabinet

Publications (1)

Publication Number Publication Date
CN103558523A true CN103558523A (en) 2014-02-05

Family

ID=50012825

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310559585.6A Pending CN103558523A (en) 2013-11-12 2013-11-12 Detection device for partial discharge of switch cabinet

Country Status (1)

Country Link
CN (1) CN103558523A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103884956A (en) * 2014-03-25 2014-06-25 上海局放软件技术有限公司 Device and method for positioning partial discharge of high-voltage equipment through oscilloscope
CN104020121A (en) * 2014-05-28 2014-09-03 广西电网公司电力科学研究院 Switch-cabinet ozone-content identification system based on anti-interference key technology
CN104459493A (en) * 2014-12-16 2015-03-25 江苏宝亨新电气有限公司 Switch cabinet partial discharge on-line monitoring system
CN104749507A (en) * 2015-04-08 2015-07-01 国家电网公司 High voltage switchgear partial discharge conductive detection testing device and method based on defect simulation
CN105116302A (en) * 2015-08-26 2015-12-02 江苏宝亨新电气有限公司 Partial discharge remote monitoring system based on Android switch cabinet
CN106443389A (en) * 2016-11-03 2017-02-22 合肥华义电气科技有限公司 Partial discharge monitoring device of switch cabinet
CN108919069A (en) * 2018-06-07 2018-11-30 广西电网有限责任公司电力科学研究院 A kind of method for detection of partial discharge of switch cabinet of Multi-source Information Fusion
CN108919070A (en) * 2018-06-07 2018-11-30 广西电网有限责任公司电力科学研究院 A kind of partial discharge of switchgear detection system of Multi-source Information Fusion
CN114236298A (en) * 2022-02-24 2022-03-25 山东掌电电力科技有限公司 Power equipment on-line measuring device based on internet

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0627182A (en) * 1992-07-10 1994-02-04 Toshiba Corp Partial discharge monitoring apparatus
US6255808B1 (en) * 1997-07-31 2001-07-03 Siemens Aktiengesellschaft Device for measuring partial discharge in gas-insulated high voltage facilities, the device having a HF sensor and UHF sensor
WO2004083878A1 (en) * 2003-03-19 2004-09-30 Diagnostic Monitoring Systems Limited System and method for monitoring partial discharge in electrical components
CN201355384Y (en) * 2009-02-20 2009-12-02 厦门红相电力设备股份有限公司 System for detecting and managing partial discharge of switch cabinet on-line
CN101750573A (en) * 2009-12-07 2010-06-23 上海市电力公司 Portable cable local discharge detection device
CN202770952U (en) * 2012-06-07 2013-03-06 广东电网公司东莞供电局 Partial discharge detection device of switch cabinet
CN103176110A (en) * 2013-02-01 2013-06-26 广东电网公司电力科学研究院 Partial discharge detection test platform of medium-voltage switch cabinet
CN203249992U (en) * 2013-05-08 2013-10-23 西安电子科技大学 Acousto-electric integration partial discharge detection sensor
CN203630280U (en) * 2013-11-12 2014-06-04 国网上海市电力公司 Detection device for partial discharge of switch cabinet

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0627182A (en) * 1992-07-10 1994-02-04 Toshiba Corp Partial discharge monitoring apparatus
US6255808B1 (en) * 1997-07-31 2001-07-03 Siemens Aktiengesellschaft Device for measuring partial discharge in gas-insulated high voltage facilities, the device having a HF sensor and UHF sensor
WO2004083878A1 (en) * 2003-03-19 2004-09-30 Diagnostic Monitoring Systems Limited System and method for monitoring partial discharge in electrical components
CN201355384Y (en) * 2009-02-20 2009-12-02 厦门红相电力设备股份有限公司 System for detecting and managing partial discharge of switch cabinet on-line
CN101750573A (en) * 2009-12-07 2010-06-23 上海市电力公司 Portable cable local discharge detection device
CN202770952U (en) * 2012-06-07 2013-03-06 广东电网公司东莞供电局 Partial discharge detection device of switch cabinet
CN103176110A (en) * 2013-02-01 2013-06-26 广东电网公司电力科学研究院 Partial discharge detection test platform of medium-voltage switch cabinet
CN203249992U (en) * 2013-05-08 2013-10-23 西安电子科技大学 Acousto-electric integration partial discharge detection sensor
CN203630280U (en) * 2013-11-12 2014-06-04 国网上海市电力公司 Detection device for partial discharge of switch cabinet

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
郭灿新 等: "局部放电HF/UHF联合分析方法的现场电缆终端检测应用", 《电力自动化设备》 *
韦斌 等: "VHF钳型传感器在线检测110kV XLPE电缆局放", 《高电压技术》 *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103884956A (en) * 2014-03-25 2014-06-25 上海局放软件技术有限公司 Device and method for positioning partial discharge of high-voltage equipment through oscilloscope
CN104020121A (en) * 2014-05-28 2014-09-03 广西电网公司电力科学研究院 Switch-cabinet ozone-content identification system based on anti-interference key technology
CN104020121B (en) * 2014-05-28 2016-08-17 广西电网公司电力科学研究院 A kind of switch cubicle ozone content identification system of anti-interference key technology
CN104459493A (en) * 2014-12-16 2015-03-25 江苏宝亨新电气有限公司 Switch cabinet partial discharge on-line monitoring system
CN104749507A (en) * 2015-04-08 2015-07-01 国家电网公司 High voltage switchgear partial discharge conductive detection testing device and method based on defect simulation
CN105116302A (en) * 2015-08-26 2015-12-02 江苏宝亨新电气有限公司 Partial discharge remote monitoring system based on Android switch cabinet
CN106443389A (en) * 2016-11-03 2017-02-22 合肥华义电气科技有限公司 Partial discharge monitoring device of switch cabinet
CN108919069A (en) * 2018-06-07 2018-11-30 广西电网有限责任公司电力科学研究院 A kind of method for detection of partial discharge of switch cabinet of Multi-source Information Fusion
CN108919070A (en) * 2018-06-07 2018-11-30 广西电网有限责任公司电力科学研究院 A kind of partial discharge of switchgear detection system of Multi-source Information Fusion
CN114236298A (en) * 2022-02-24 2022-03-25 山东掌电电力科技有限公司 Power equipment on-line measuring device based on internet

Similar Documents

Publication Publication Date Title
CN103558523A (en) Detection device for partial discharge of switch cabinet
CN103558525A (en) Method for detection of partial discharge of switch cabinet
CN103558524A (en) Detection device for partial discharge of switch cabinet
CN103558526A (en) Method for detection of partial discharge of switch cabinet
CN101706527B (en) Method for detecting arc faults based on time-frequency characteristics of high-frequency current component
CN201269916Y (en) Regional discharging detection system for air insulation combined electrical appliance
CN101865969B (en) Method for on-line monitoring and positioning of partial discharge of gas insulation combined electrical apparatus
CN103913679B (en) High-tension switch cabinet partial discharge monitoring system
CN103913681A (en) System and method for detecting partial discharge under high-frequency voltage
CN203630279U (en) Detection device for partial discharge of switch cabinet
CN104502821A (en) Capacitive sensor based on-line switch cabinet partial discharge monitoring system and method
CN103712551A (en) Power distribution network transformer low-voltage winding deformation on-line monitoring device and method
CN109507556A (en) MDS type switchgear fault detection alarm device
CN103267931B (en) Method for positioning intersecting interconnection cable intermediate head partial discharge
CN202583397U (en) A partial discharge monitoring and positioning system of high-tension switch cabinet
CN103713244B (en) A kind of live detection method for distribution cable shelf depreciation
CN203630280U (en) Detection device for partial discharge of switch cabinet
CN102866329B (en) GIS (Geographic Information System) local discharge monitoring device and method utilizing voltage sharing springs as detectors
CN203825145U (en) Device for detecting partial discharge of terminal of on-site power cable
CN110108993A (en) A kind of multiband three-dimensional joint test method for power equipment shelf depreciation
EP2482090A1 (en) System for measuring partial discharges in power lines
Liu et al. Measuring of very fast transient overvoltage and very fast transient current generated by disconnector operating
KR101789577B1 (en) On-line Patial Discharge Location Monitoring Device of Rotating high voltage three-phase stator winding
CN205562732U (en) Many information fusion diagnostic device of combined electrical apparatus partial discharge
CN202693736U (en) Online partial discharge detecting sensor of GIS (gas insulated substation)

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
C12 Rejection of a patent application after its publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20140205