CN103308832B - A kind of high-voltage cable insulating transition joint local discharge test device and using method - Google Patents
A kind of high-voltage cable insulating transition joint local discharge test device and using method Download PDFInfo
- Publication number
- CN103308832B CN103308832B CN201310211359.9A CN201310211359A CN103308832B CN 103308832 B CN103308832 B CN 103308832B CN 201310211359 A CN201310211359 A CN 201310211359A CN 103308832 B CN103308832 B CN 103308832B
- Authority
- CN
- China
- Prior art keywords
- cable
- high frequency
- current sensor
- frequency current
- insulation intermediate
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000007704 transition Effects 0.000 title claims abstract description 10
- 238000009413 insulation Methods 0.000 claims abstract description 31
- 238000005259 measurement Methods 0.000 claims abstract description 13
- 238000001514 detection method Methods 0.000 claims abstract description 9
- 230000007547 defect Effects 0.000 abstract description 3
- 210000001367 artery Anatomy 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Landscapes
- Testing Relating To Insulation (AREA)
Abstract
The present invention relates to a kind of high-voltage cable insulating transition joint local discharge test device, two tie points that described each cross interconnected case is connected with same insulation intermediate connector connect respectively one end of a cable, this cable middle part turns to multiturn coil, in this coil, install a High Frequency Current Sensor, the output of this High Frequency Current Sensor connects measurement of partial discharge equipment. In the present invention, connect by cable two tie points that each is connected with insulation intermediate connector, realize the shelf depreciation band electro-detection of insulation intermediate connector by the output of High Frequency Current Sensor, avoided in prior art cross interconnected case and in flakes dimensional standard differ, cannot place the defect of High Frequency Current Sensor, test process is rapid, very convenient.
Description
Technical field
The invention belongs to high-voltage cable insulating transition joint local discharge test device field, in especially a kind of high-voltage cable insulatingBetween joint local discharge test device and using method.
Background technology
Power industry standard DL/T5221-2005 " urban electric power cable run designing technique regulation " and enterprise of State Grid Corporation of ChinaIndustry standard Q/GDW512-2010 " power cable line operating standard " regulation: the metallic shield ground connection side of cable metal jacketThe selection of formula should meet the following requirements: (1) cable run shorter and meet induced voltage regulation require time, can take at circuit oneHold direct ground connection and at the other end through overvoltage limiter ground connection, or the direct ground connection of middle part single-point and limitting through overvoltage at two endsDevice ground connection processed. (2) cable run beyond above-mentioned situation, should be evenly divided into cable run three sections or three multiple section, adoptsImplement cross interconnected ground connection with insulating joint.
110kV and the cross interconnected earthing mode of above Voltage Cable Lines Construction as shown in Figure 1, comprise high-tension cable 2, electricityCable terminals 1, insulation intermediate connector 3 and cross interconnected case 5, between cable terminal and rightmost insulation intermediate connector twoIndividual insulation intermediate connector connects a cross interconnected case by wire 4 respectively, and six tie points are set in each cross interconnected case,Three tie points that are arranged in top are connected with the insulation intermediate connector left side of threephase cable respectively, are positioned at three tie points of belowBe connected with the insulation intermediate connector right side in threephase cable respectively, interconnection between two groups of tie points of above and below, is positioned atThree tie points of below are all by sheath protector ground connection.
In test, cross interconnected case in flakes on High Frequency Current Sensor be installed detect the high frequency partial electric discharge arteries and veins in earth currentRush current signal, evaluate the running status of cable termination, but in real process, due to the interconnected case of each producer and chi in flakesVery little different with standard, exist in flakes too wide, sensor wear to enter, and chest space is too little, in flakes between distance too near,The situations such as not reserved sensor space, cause measuring local discharge signal.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of high-voltage cable insulating rational in infrastructure, convenient operation is providedTransition joint local discharge test device.
The technical scheme that the present invention takes is:
A kind of high-voltage cable insulating transition joint local discharge test device, comprises three high-tension cables, insulation intermediate connector and friendshipsPitch interconnected case, three insulation intermediate connectors are installed on every high-tension cable, wherein two insulation intermediate connectors connect respectively by cableConnect a cross interconnected case, it is characterized in that: two connections that described each cross interconnected case is connected with same insulation intermediate connectorPoint connects respectively one end of a cable, and this cable middle part turns to multiturn coil, installs a High Frequency Current Sensor in this coil,The output of this High Frequency Current Sensor connects measurement of partial discharge equipment.
And described High Frequency Current Sensor connects described measurement of partial discharge equipment by coaxial signal line.
And the measurement category that the number of turn of described coil is High Frequency Current Sensor is divided by flowing through in the cable in parallel with tie pointCurrent value.
Another object of the present invention is to provide a kind of using method of high-voltage cable insulating transition joint local discharge test device,It is characterized in that: comprise the following steps:
(1) a tie point that one end of cable and cross interconnected case is positioned to top is connected;
(2) make the middle part of cable repeatedly be wrapped in High Frequency Current Sensor;
(3) the other end of cable and cross interconnected case are positioned at below and with step (1) described in tie point be connected same insulation indirectAnother tie point of head connects;
By the output of High Frequency Current Sensor by coaxial signal line and measurement of partial discharge equipment connection;
(5) complete the shelf depreciation band electro-detection of an insulation intermediate connector in a phase high-tension cable;
Repeating step (1)～(5), complete the shelf depreciation band electro-detection of insulation intermediate connector in all phase high-tension cables.
Advantage of the present invention and good effect are:
In the present invention, connect by cable two tie points that each is connected with insulation intermediate connector, by high frequency electric sensingThe output of device realizes the shelf depreciation band electro-detection of insulation intermediate connector, has avoided in prior art cross interconnected case and chi in flakesVery little standard differs, and cannot place the defect of High Frequency Current Sensor, and test process is rapid, very convenient.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further described, and following embodiment is illustrative, is not determinate, can notLimit protection scope of the present invention with following embodiment.
A kind of high-voltage cable insulating transition joint local discharge test device, as shown in Figure 1, comprises three high-tension cables 2, insulationTransition joint 3 and cross interconnected case 5, install three insulation intermediate connectors on every high-tension cable, wherein two insulation indirectHead connects respectively a cross interconnected case by cable, and innovation of the present invention is: described each cross interconnected case and same insulationTwo tie points 6,7 that transition joint connects connect respectively one end of a cable 11, and this cable middle part turns to multiturn coil 12,In this coil, install a High Frequency Current Sensor 10, the output of this High Frequency Current Sensor connects measurement of partial discharge equipment 8.
In the present embodiment, described High Frequency Current Sensor connects described measurement of partial discharge equipment by coaxial signal line 9. DescribedThe number of turn N of coil be the measurement category M of High Frequency Current Sensor divided by the current value I flowing through in the cable in parallel with tie point,Be N=M/I.
The using method of above-mentioned high-voltage cable insulating transition joint local discharge test device, comprises the following steps:
(1) a tie point that one end of cable and cross interconnected case is positioned to top is connected;
(2) make the middle part of cable repeatedly be wrapped in High Frequency Current Sensor;
(3) the other end of cable and cross interconnected case are positioned at below and with step (1) described in tie point be connected same insulation indirectAnother tie point of head connects;
By the output of High Frequency Current Sensor by coaxial signal line and measurement of partial discharge equipment connection;
(5) complete the shelf depreciation band electro-detection of an insulation intermediate connector in a phase high-tension cable;
Repeating step (1)～(5), complete the shelf depreciation band electro-detection of insulation intermediate connector in all phase high-tension cables.
In the present invention, connect by cable two tie points that each is connected with insulation intermediate connector, by high frequency electric sensingThe output of device realizes the shelf depreciation band electro-detection of insulation intermediate connector, has avoided in prior art cross interconnected case and chi in flakesVery little standard differs, and cannot place the defect of High Frequency Current Sensor, and test process is rapid, very convenient.
Claims (1)
1. a high-voltage cable insulating transition joint local discharge test device, comprise three high-tension cables, insulation intermediate connector and cross interconnected case, wherein two insulation intermediate connectors in three insulation intermediate connectors installing on every high-tension cable are connected to same cross interconnected case by cable, it is characterized in that: two tie points that each described cross interconnected case is connected with same insulation intermediate connector connect respectively one end of same cable, this cable middle part turns to multiturn coil, in this coil, install a High Frequency Current Sensor, the output of this High Frequency Current Sensor connects measurement of partial discharge equipment,
Described High Frequency Current Sensor connects described measurement of partial discharge equipment by coaxial signal line;
The number of turn of described coil is that the measurement category of High Frequency Current Sensor is divided by the current value flowing through in the cable in parallel with tie point;
The using method of this device comprises the following steps:
(1) a tie point that one end of cable and cross interconnected case is positioned to top is connected;
(2) make the middle part of cable repeatedly be wrapped in High Frequency Current Sensor;
(3) the other end of cable and cross interconnected case are positioned at below and with step (1) described in tie point another tie point of being connected same insulation intermediate connector connect;
By the output of High Frequency Current Sensor by coaxial signal line and measurement of partial discharge equipment connection;
(5) complete the shelf depreciation band electro-detection of an insulation intermediate connector in a phase high-tension cable;
Repeating step (1)～(5), complete the shelf depreciation band electro-detection of insulation intermediate connector in all phase high-tension cables.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310211359.9A CN103308832B (en) | 2013-05-31 | 2013-05-31 | A kind of high-voltage cable insulating transition joint local discharge test device and using method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310211359.9A CN103308832B (en) | 2013-05-31 | 2013-05-31 | A kind of high-voltage cable insulating transition joint local discharge test device and using method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103308832A CN103308832A (en) | 2013-09-18 |
| CN103308832B true CN103308832B (en) | 2016-05-04 |
Family
ID=49134263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310211359.9A Active CN103308832B (en) | 2013-05-31 | 2013-05-31 | A kind of high-voltage cable insulating transition joint local discharge test device and using method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103308832B (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103558532A (en) * | 2013-11-20 | 2014-02-05 | 国家电网公司 | Partial discharge on-line detection system of high-voltage crosslinked polyethylene power cable |
| CN103558534B (en) * | 2013-11-20 | 2016-01-20 | 国家电网公司 | The two-dimentional Weibull Parameter Spectrum clustering method of high-tension cable discharge signal |
| US10401416B2 (en) | 2014-07-18 | 2019-09-03 | Prysmian S.P.A | Electrical cable link apparatus and electrical cable system comprising the apparatus |
| WO2016190823A1 (en) | 2015-05-28 | 2016-12-01 | Em Elektri̇k Malzemeleri̇ Yükleni̇m Sanayi̇ Ti̇caret Anoni̇m Şi̇rketi̇ | Link box with built-in partial discharge sensor |
| CN105717428B (en) * | 2016-02-19 | 2018-09-04 | 西安交通大学 | A kind of cable partial discharge live correction method based on HFCT |
| CN105913738B (en) * | 2016-06-08 | 2018-09-07 | 云南电网有限责任公司昆明供电局 | A kind of high-tension cable oversheath trouble shoot simulation teching device |
| CN106054098B (en) * | 2016-08-16 | 2019-01-15 | 国网天津市电力公司 | Voltage Cable Lines Construction GIS terminal shelf depreciation field calibration method |
| CN108344925B (en) * | 2017-01-24 | 2021-04-06 | 中国石油化工股份有限公司 | Power cable partial discharge monitoring device and method |
| CN108344928B (en) * | 2017-01-24 | 2021-04-06 | 中国石油化工股份有限公司 | Power cable partial discharge online monitoring device and method |
| CN108344926B (en) * | 2017-01-24 | 2021-04-06 | 中国石油化工股份有限公司 | Power cable partial discharge online monitoring device and method |
| CN108344927B (en) * | 2017-01-24 | 2021-04-06 | 中国石油化工股份有限公司 | Power cable partial discharge monitoring device and method |
| US11183828B1 (en) | 2020-06-12 | 2021-11-23 | hvGrid-tech Inc. | Device with health monitoring |
| CN112462199A (en) * | 2020-11-26 | 2021-03-09 | 国网上海市电力公司 | Partial discharge detection device and method based on cross-connection box |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102221665A (en) * | 2011-03-21 | 2011-10-19 | 江苏省电力公司无锡供电公司 | Power cable partial discharge detection contrast method |
| CN102981106A (en) * | 2012-11-12 | 2013-03-20 | 华北电力大学 | Online inspection method of three-phase cross interconnected electric cable intermediate head partial discharge |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3145916B2 (en) * | 1996-02-28 | 2001-03-12 | 東京電力株式会社 | Noise removal method for partial discharge measurement |
| KR100632078B1 (en) * | 2005-06-10 | 2006-10-04 | 엘에스전선 주식회사 | Noise discriminating device and method for detect the partial discharge in underground power cable |
-
2013
- 2013-05-31 CN CN201310211359.9A patent/CN103308832B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102221665A (en) * | 2011-03-21 | 2011-10-19 | 江苏省电力公司无锡供电公司 | Power cable partial discharge detection contrast method |
| CN102981106A (en) * | 2012-11-12 | 2013-03-20 | 华北电力大学 | Online inspection method of three-phase cross interconnected electric cable intermediate head partial discharge |
Non-Patent Citations (2)
| Title |
|---|
| XLPE电力电缆局部放电定位技术研究;周凤争等;《天津电力技术》;20111231(第4期);第1,2,9页 * |
| XLPE电缆交叉互联系统中的局放脉冲传播特性;姚翔等;《高电压技术》;20080229;第34卷(第2期);第416页第1节，图1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103308832A (en) | 2013-09-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103308832B (en) | A kind of high-voltage cable insulating transition joint local discharge test device and using method | |
| CN103323751B (en) | A kind of high pressure stub cable insulation terminal local discharge test device and using method | |
| CN102737828B (en) | With the capacitance type potential transformer of transient over-voltage monitoring unit | |
| CN202749745U (en) | Special-purpose grounding lead wire for intersecting interconnection box maintenance | |
| CN104880652A (en) | Electrified partial discharge test system of switch cabinet and voltage signal extraction device thereof | |
| CN105510645A (en) | Wiring method for automatic detection of three-phase integrated-type power transformer | |
| CN105445567B (en) | The nuclear-phase method of totally enclosed type generalized information system | |
| Papadopoulos et al. | Low-voltage distribution line performance evaluation for PLC signal transmission | |
| US10389213B2 (en) | Apparatus for reduced voltage stress on AC motors and cables | |
| CN201181944Y (en) | Network appliance port and network appliance | |
| CN103219686A (en) | Three-core outdoor cable terminal | |
| US20130062115A1 (en) | Outdoor control cable | |
| Yang et al. | Effects of segmented shield wires on signal attenuation of power-line carrier channels on overhead transmission lines—Part I: Modeling method | |
| CN203103897U (en) | Cold shrink intermediate connector | |
| Kharlamov et al. | Characteristics of PLC channels over high voltage power cables and mixed cable-overhead high voltage power lines | |
| CN204964626U (en) | High pressure parallel reactor winding is together with sheathed tube insulation resistance test circuit | |
| CN103308799B (en) | The Apparatus and method for that a kind of cable-line parameter be connected with GIS is measured | |
| CN105225816A (en) | A kind of current transformer with high voltage standard capacitor function | |
| CN201430402Y (en) | Connection system for tower and ground wires | |
| CN205301503U (en) | One -tenth dish cable partial discharge detection device | |
| CN110221156A (en) | A kind of separation of high voltage power cable leakage current and detection method | |
| CN202994832U (en) | General wire collecting box for transformer test | |
| CN104375033A (en) | Device for testing long-term operation performance of direct current cable system under extra-high voltage strong current working condition | |
| Kaloudas et al. | Simulation of switching and lightning transients in parallel single-core underground cables | |
| CN203894274U (en) | Transformer integrated testing case |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |