CN102520327A - Location system for turn-to-turn insulation defect of dry type air reactor - Google Patents
Location system for turn-to-turn insulation defect of dry type air reactor Download PDFInfo
- Publication number
- CN102520327A CN102520327A CN2012100065011A CN201210006501A CN102520327A CN 102520327 A CN102520327 A CN 102520327A CN 2012100065011 A CN2012100065011 A CN 2012100065011A CN 201210006501 A CN201210006501 A CN 201210006501A CN 102520327 A CN102520327 A CN 102520327A
- Authority
- CN
- China
- Prior art keywords
- turn
- type air
- dry
- dry type
- air reactor
- 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.)
- Granted
Links
Images
Landscapes
- Testing Relating To Insulation (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention discloses a location system for a turn-to-turn insulation defect of a dry type air reactor, which comprises a charging capacitor, a discharging sphere gap, a first switch, a second switch, a jam inductance and a compensating condenser which are serially connected in sequence to form a closed loop circuit, wherein the charging capacitor and the compensating condenser are respectively connected in parallel with a direct-current power supply and an alternating-current power supply, a connection point connected with one end of the dry type air reactor to be detected is arranged between the first switch and the second switch, and another connection point connected with the other end of the dry type air reactor to be detected is arranged between the charging condenser and the compensating condenser. According to the location system for the turn-to-turn insulation defect of the dry type air reactor, the defect of incapability of locating the turn-to-turn insulation defect of the dry type air reactor is overcome, the detection effect of the traditional detecting device for the present turn-to-turn insulation defect of the dry type air reactor is checked, and development and progress of the detecting device for the turn-to-turn insulation defect of the dry type air reactor detecting device are promoted.
Description
Technical field
The present invention relates to a kind of positioning system, particularly relate to a kind of positioning system of dry-type air-core reactor turn-to-turn insulation defective.
Background technology
In the prior art, the ablaze accident of reactor that causes because of the turn-to-turn insulation defective can take place in the electrical network often.At present; China still is in experience accumulation to the means of dry-type air-core reactor turn-to-turn insulation defects detection and improves the stage; Because dry-type air-core reactor turn-to-turn insulation defective can't position and search, largely limit the development and progress of dry-type air-core reactor turn-to-turn insulation defect detecting technique.Simultaneously; Because the turn-to-turn insulation defective can't be located; The turn-to-turn insulation defective that causes dry-type air-core reactor all can't carry out concrete statistical study to the turn-to-turn insulation defective in the whole service process, thereby also limited reactor perfect at the improvement of structure aspects and design aspect.
Summary of the invention
Technical matters to be solved by this invention provides a kind of positioning system of dry-type air-core reactor turn-to-turn insulation defective, can accurately locate dry-type air-core reactor turn-to-turn insulation defective.
For solving the problems of the technologies described above; The invention provides a kind of positioning system of dry-type air-core reactor turn-to-turn insulation defective; Comprise the charging capacitor, ball discharge crack, first switch, second switch, obstruction inductance and the building-out capacitor that are followed in series to form the closed-loop path; Said charging capacitor, building-out capacitor be parallel connection direct power supply and AC power respectively; Be provided with the tie point that is connected with an end of dry-type air-core reactor to be measured between said first switch and the said second switch, be provided with the tie point that is connected with the other end of dry-type air-core reactor to be measured between said charging capacitor and the said building-out capacitor.
The essence of present technique scheme is to form through power-frequency voltage circuit and high-frequency impulse oscillating voltage circuit mutual superposition, can realize metallicity puncture, low-resistance puncture, high resistant are punctured three kinds of different defects character and position.Wherein, block inductance, building-out capacitor and AC power and constitute the power-frequency voltage circuit, ball discharge crack, charging capacitor and direct supply are formed the high-frequency electrical pulses volt circuit.The function that the circuit that the present technique scheme is showed is realized is that high-frequency impulse oscillating voltage and power-frequency voltage can be superimposed upon on the dry-type air-core reactor to be measured simultaneously, and high-frequency impulse oscillating voltage and power-frequency voltage do not influence the other side's operate as normal mutually.Simultaneously, the power-frequency voltage that applies will guarantee that the voltage on the dry-type air-core reactor to be measured is rated voltage, and electric current is a rated current.Being applied to high-frequency impulse oscillating voltage frequency on the dry-type air-core reactor to be measured and being 100kHz and following, voltage magnitude then stipulates according to related request.The effect of building-out capacitor provides the test current of dry-type air-core reactor to be measured; Reduction is to the capacity requirement of power supply; The capacitance of building-out capacitor is bigger, because consider the physical constraints of equipment, can't require can bear on the building-out capacitor too high high-frequency impulse oscillating voltage.The effect of AC power provides dry-type air-core reactor power current to be measured, and simultaneously, AC power self can not be born the high-frequency impulse oscillating voltage, therefore in the circuit of present technique scheme, has designed the obstruction inductance.The effect of blocking inductance is mainly used in bears HF voltage, reaches the purpose of protection building-out capacitor and AC power.In the present technique scheme institute designed circuit, with the design of the tie point of dry-type air-core reactor to be measured also be crucial, if the choice of location of tie point is improper, can't solve this positioning system technical matters to be solved.The present technique scheme mainly is to have set up the circuit of power-frequency voltage and the stack of high-frequency impulse oscillating voltage, and this circuit can be realized the defect point temperature is sharply raise, and reaches the purpose of defect location then through thermal infrared imager.
Be in series with current-limiting resistance on the said direct supply.Purpose is that high-frequency pulse current is played restriction.
The present invention has following useful technique effect:
(1) filled up the blank that present dry-type air-core reactor turn-to-turn insulation defective can't be located, realized defective is accurately located;
(2) realized the detection effect of present dry-type air-core reactor turn-to-turn insulation defect detecting device is verified, promoted the development and progress of dry-type air-core reactor turn-to-turn insulation defect detecting device;
(3) will make defective locations added up and become possibility, and, instruct and in service the dry-type air-core reactor insulating monitoring is maked an inspection tour for the operation maintenance rules of formulating dry-type air-core reactor provide foundation;
(4), will help instructing reactor perfect at the improvement of structure aspects, design aspect, thereby further improve the operational reliability of dry-type air-core reactor, the probability that the reduction accident takes place to the statistical study of defective locations.
Description of drawings
Fig. 1 is a circuit connection schematic diagram of the present invention;
Fig. 2 is a circuit design rendering of the present invention.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is done further explain.
As shown in Figure 1, a kind of positioning system of dry-type air-core reactor turn-to-turn insulation defective comprises the charging capacitor C, ball discharge crack S, first K switch, the second switch K that are followed in series to form the closed-loop path
1, block inductance L
1With building-out capacitor C
1, said charging capacitor C, building-out capacitor C
1Be connected in parallel respectively direct supply DC and AC power AC, said first K switch and said second switch K
1Between be provided with the tie point that is connected with the end of dry-type air-core reactor L to be measured, said charging capacitor C and said building-out capacitor C
1Between be provided with the tie point that is connected with the other end of dry-type air-core reactor L to be measured.Be in series with current-limiting resistance R on the said direct supply DC.Wherein, block inductance L
1Rated voltage be not less than the rated voltage of tested reactor L, and inductance value is suitable with L; Building-out capacitor C
1Value according to L
1Confirm with L, calculate according to following formula,
The capacitance of charging capacitor C is according to computes,
F≤100kH wherein.The S discharge of under given voltage, lighting a fire in ball discharge crack is for dry-type air-core reactor L to be measured provides the high-frequency impulse oscillating voltage.
As shown in Figure 2, Fig. 2 is the circuit design rendering of high-frequency impulse oscillating voltage stack power-frequency voltage of the present invention.Be the power-frequency voltage circuit in the left-hand broken line frame among the figure, U is a power frequency supply.In the frame of broken lines of right side is high-frequency impulse oscillating voltage circuit, and Udc representes the dc generator in the test unit, and series limiting resistor on the said direct supply, purpose are that high-frequency pulse current is played restriction, thus the protection dc generator.R is a current-limiting resistance, and C is a charging capacitor, and L is a dry-type air-core reactor to be measured.S representes the ball discharge crack, and the discharge of under given voltage, lighting a fire is for dry-type air-core reactor L to be measured provides the high-frequency impulse oscillating voltage.
The present invention has following points for attention in design: 1) block inductance L
1Select for use, the position in circuit, and block inductance L
1The obstruction inductance L is selected in the selection of inductance value for use
1Fundamental purpose be as blocking inductance, make it when not influencing original oscillation circuit, block high-frequency oscillation voltage and be applied on the power-frequency voltage circuit, make the power-frequency voltage circuit not bear high-frequency oscillation voltage, guaranteeing the operate as normal of power-frequency voltage circuit.2) building-out capacitor C
1Select for use, the position in circuit, and building-out capacitor C
1The selection of capacitance, building-out capacitor C
1One side is electric capacity by way of compensation, and is parallelly connected with the power-frequency voltage circuit on the one hand for dry-type air-core reactor L to be measured provides rated current, for high-frequency current provides passage, makes power frequency supply not bear the high-frequency impulse oscillating voltage.
In designed circuit of the present invention, when on dry-type air-core reactor, superposeing power-frequency voltage and high-frequency pulse voltage, selecting charging capacitor C is 3000pF; Current-limiting resistance R resistance is 6k Ω; The gap in adjustment ball discharge crack makes it discharge under 7kV voltage, and will be produced high-frequency impulse oscillating voltage on the examination reactor this moment, and oscillation peak voltage is 7kV; For the work frequency circuit part, block inductance L
1Select and the suitable inductance value of dry-type air-core reactor L to be measured, be 4.24mH, C
1Electric capacity by way of compensation is according to oscillation frequency, dry-type air-core reactor L to be measured with block inductance L
1Select, in this circuit, elect 1000uF as, because oscillation frequency about tens of kHz, is blocked inductance L this moment
1On will bear main high-frequency impulse oscillating voltage, through simulation calculation building-out capacitor C
1On the high-frequency pulse voltage peak value that bears 2.15V only, receive the influence of high-frequency impulse oscillating voltage hardly, thereby guaranteed that the power-frequency voltage circuit does not bear the high-frequency impulse oscillating voltage.
The present invention is through the method for power-frequency voltage and high-frequency pulse voltage stack, has the place of defective for turn-to-turn insulation, under the effect of high-frequency pulse voltage, can make turn-to-turn formation spark discharge and temporary puncture; And the power-frequency voltage of stack can make not blow-out of breakdown between adjacent turns; Both time effects can be so that turn-to-turn insulation forms continuous short-circuit condition, and under the effect of electric arc, the short dot temperature raises rapidly; Can defect point accurately be located through thermal infrared imager; Simultaneously the turn-to-turn insulation defect point can be because of high temperature cabonization, and follows smog, the signable in view of the above position of failure point of respectively sealing.
Above-listed detailed description is to the specifying of one of the present invention possible embodiments, and this embodiment is not in order to limiting claim of the present invention, and the equivalence that all the present invention of disengaging do is implemented or change, all should be contained in the claim of this case.
Claims (2)
1. the positioning system of a dry-type air-core reactor turn-to-turn insulation defective; It is characterized in that: comprise the charging capacitor, ball discharge crack, first switch, second switch, obstruction inductance and the building-out capacitor that are followed in series to form the closed-loop path; Said charging capacitor, building-out capacitor be parallel connection direct power supply and AC power respectively; Be provided with the tie point that is connected with an end of dry-type air-core reactor to be measured between said first switch and the said second switch, be provided with the tie point that is connected with the other end of dry-type air-core reactor to be measured between said charging capacitor and the said building-out capacitor.
2. the positioning system of dry-type air-core reactor turn-to-turn insulation defective according to claim 1 is characterized in that: be in series with current-limiting resistance on the said direct supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210006501.1A CN102520327B (en) | 2012-01-10 | 2012-01-10 | Location system for turn-to-turn insulation defect of dry type air reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210006501.1A CN102520327B (en) | 2012-01-10 | 2012-01-10 | Location system for turn-to-turn insulation defect of dry type air reactor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102520327A true CN102520327A (en) | 2012-06-27 |
| CN102520327B CN102520327B (en) | 2014-01-22 |
Family
ID=46291313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210006501.1A Active CN102520327B (en) | 2012-01-10 | 2012-01-10 | Location system for turn-to-turn insulation defect of dry type air reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102520327B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102981111A (en) * | 2012-12-24 | 2013-03-20 | 宁波电业局 | Interturn insulation detector for dry air reactor |
| CN110824311A (en) * | 2019-11-22 | 2020-02-21 | 南京信息工程大学 | Zinc oxide valve plate breakdown point detection device and method based on image recognition |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3968426A (en) * | 1974-04-22 | 1976-07-06 | James G. Biddle Company | Method of A.C. insulation testing utilizing a variable inductive reactor in parallel with a test specimen |
| CN201133925Y (en) * | 2007-09-19 | 2008-10-15 | 郑役军 | Turn-to-turn short circuit test device |
| CN201681133U (en) * | 2010-05-12 | 2010-12-22 | 江少成 | Dry-type reactor interturn insulation detection device |
| CN202393873U (en) * | 2012-01-10 | 2012-08-22 | 广东电网公司电力科学研究院 | Positioning system for positioning interturn insulation defect of dry-type air-core reactor |
-
2012
- 2012-01-10 CN CN201210006501.1A patent/CN102520327B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3968426A (en) * | 1974-04-22 | 1976-07-06 | James G. Biddle Company | Method of A.C. insulation testing utilizing a variable inductive reactor in parallel with a test specimen |
| CN201133925Y (en) * | 2007-09-19 | 2008-10-15 | 郑役军 | Turn-to-turn short circuit test device |
| CN201681133U (en) * | 2010-05-12 | 2010-12-22 | 江少成 | Dry-type reactor interturn insulation detection device |
| CN202393873U (en) * | 2012-01-10 | 2012-08-22 | 广东电网公司电力科学研究院 | Positioning system for positioning interturn insulation defect of dry-type air-core reactor |
Non-Patent Citations (2)
| Title |
|---|
| 孙强等: "运行中干式电抗器绝缘状况的诊断方法和判断标准", 《电力设备》 * |
| 徐林峰等: "空心电抗器匝间过电压试验用脉冲振荡电路", 《哈尔滨理工大学学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102981111A (en) * | 2012-12-24 | 2013-03-20 | 宁波电业局 | Interturn insulation detector for dry air reactor |
| CN110824311A (en) * | 2019-11-22 | 2020-02-21 | 南京信息工程大学 | Zinc oxide valve plate breakdown point detection device and method based on image recognition |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102520327B (en) | 2014-01-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102520311B (en) | Method for locating turn-to-turn insulation defects of dry type air-core reactor | |
| CN107147096A (en) | Non-effectively earthed system earth fault is mutually actively depressured security processing | |
| JP2017537847A (en) | Decentralized protection system for section feeding of electric railway traction network | |
| CN103280785B (en) | A kind of HVDC (High Voltage Direct Current) transmission line guard method of identifiable design high resistance earthing fault | |
| CN106546893A (en) | Detection method to inter-turn insulation defect | |
| CN102520310B (en) | System for positioning turn-to-turn insulation defect of dry air-core reactor | |
| CN102590699B (en) | Method for positioning inter-turn insulation defect of dry hollow reactor | |
| CN102520327B (en) | Location system for turn-to-turn insulation defect of dry type air reactor | |
| CN202393873U (en) | Positioning system for positioning interturn insulation defect of dry-type air-core reactor | |
| CN105866608A (en) | Power distribution network fault line selection method based on unique through-flow characteristic of resistive current | |
| CN104882866A (en) | Method for protection device to use pulse quantity to distinguish CT secondary side line breaking | |
| CN202393872U (en) | Turn-to-turn insulation defect locating system for dry type air-core reactor | |
| CN105738776A (en) | Detection system and method of turn-to-turn defects of series reactor | |
| CN204241625U (en) | A kind of withstand voltage distance measuring equipment exchanged based on ultralow frequency | |
| CN103344853A (en) | Method for judging faults of parallel capacitors by means of natural vibration frequency | |
| CN105807187A (en) | Single-phase ground-fault assist detection device | |
| CN104007360B (en) | A kind of controllable phase cut-offs the alternating-current measurement device and method of capacitor Internal fuse | |
| CN202177679U (en) | One-point grounding detection device for secondary coil neutral wire of voltage transformer | |
| CN102288868A (en) | One-point grounding detector and detection method for voltage transformer secondary coil neutral line | |
| CN103616581A (en) | Method for testing reactive compensation device without dismounting leads | |
| CN107144766A (en) | A kind of fast diagnosis method for the fault type that earthing or grounding means is shifted for power distribution network | |
| CN207039164U (en) | A kind of controling circuit structure with fault detection capability | |
| CN106556772A (en) | A kind of reactor turn to turn insulation test system | |
| CN111123031B (en) | Fault detection method, low-voltage energy storage pre-operation set device, controller and system | |
| CN104158163B (en) | VFTO protection device and method for transformer in GIS substation |
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 | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 510080 Dongfeng East Road, Dongfeng, Guangdong, Guangzhou, Zhejiang Province, No. 8 Patentee after: Electric Power Research Institute of Guangdong Power Grid Co.,Ltd. Address before: 510080 Dongfeng East Road, Dongfeng, Guangdong, Guangzhou, Zhejiang Province, No. 8 Patentee before: ELECTRIC POWER RESEARCH INSTITUTE OF GUANGDONG POWER GRID Corp. |