CN205139307U - 500kV high pressure parallel reactor interturn insulation capability test device - Google Patents
500kV high pressure parallel reactor interturn insulation capability test device Download PDFInfo
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- CN205139307U CN205139307U CN201520962950.2U CN201520962950U CN205139307U CN 205139307 U CN205139307 U CN 205139307U CN 201520962950 U CN201520962950 U CN 201520962950U CN 205139307 U CN205139307 U CN 205139307U
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Abstract
The embodiment of the utility model discloses 500kV high pressure parallel reactor interturn insulation capability test device, this testing arrangement are used for detecting high -pressure parallel reactor interturn insulation nature, establish perfect reactor interturn insulation performance and detect and criterion. This testing arrangement includes the vary voltage module, the divider, the model discharges, rogowski coil, high -voltage probe and oscillograph, wait with the difference that it places in the model that discharges to detect interturn insulation defect model, adjust the voltage of vary voltage module, the divider is measured and is waited to detect the voltage of interturn insulation defect model when puncturing, voltage and current waveform among the test circuit are measured in oscillograph monitoring and analysis, and contrast with normal interturn insulation model, thereby it detects and criterion to establish reactor interturn insulation performance, this standard provides the contrast standard for reactor fault detection, help technical staff quickly determine failure cause.
Description
Technical field
The utility model relates to electrical equipment detection technique field, particularly relates to a kind of 500kV high-voltage shunt reactor turn-to-turn insulation performance testing device.
Background technology
Along with greatly developing of electrical network, in recent years in electric device 500kV high-voltage shunt reactor quantity also in continuous increase.When shunt reactor can be used to weaken unloaded or underloading, the power-frequency voltage caused by capacity effect of long transmission line raises, and also has the reactive power distribution that improves in voltage's distribiuting along the line and light-loaded circuit and reduces the effect of line loss.Operating experience and the data of domestic and international reactor show, the failure cause of all kinds of reactor has a lot, and such as, iron core leakage field, vibration and noise etc., wherein between coil turn, insulation fault accident is in the great majority.
The means such as in prior art, when reactor breaks down, technician uses normal experiment to detect, online and sampling oil chromatography data analysis are analyzed Reactor Fault, also need if desired to hang cover disassembling analysis.This series of inspection is not effectively investigated reactor turn-to-turn insulation fault, can only the ruuning situation of reflected reactance device from the side, also can waste the time and efforts of technician on the contrary.
But the prerequisite of reactor turn-to-turn insulation fault being carried out to effectively investigation is, to the detection of reactor turn-to-turn insulation performance and judgement, there are clear and definite appraisal standards.So, build the proving installation that is assessed 500kV high-voltage shunt reactor turn-to-turn insulation performance reliably, analyze the insulativity of reactor turn-to-turn insulation, and the detection of the reactor turn-to-turn insulation performance of Erecting and improving and criterion need the problem of solution badly.
Utility model content
The utility model embodiments provides a kind of 500kV high-voltage shunt reactor turn-to-turn insulation performance testing device, this device obtains the detection waveform of inter-turn insulation defect in various degree by test, the detection of the reactor turn-to-turn insulation performance of Erecting and improving and criterion, during to solve Reactor Fault in prior art, the detection of contrast reactor turn-to-turn insulation performance and criterion, carry out the problem of effectively investigation in time to reactor turn-to-turn insulation fault.
In order to solve the problems of the technologies described above, the utility model embodiment discloses following technical scheme:
The utility model discloses a kind of 500kV high-voltage shunt reactor turn-to-turn insulation performance testing device, comprising: voltage changing module, voltage divider, discharging model, Rogowsky coil, high-voltage probe and oscillograph;
Described voltage changing module and described discharging model and Rogowsky coil are connected in series, and described voltage divider and described discharging model and Rogowsky coil are connected in parallel, and described high-voltage probe and oscillograph are connected in series and are parallel to the two ends of described discharging model.
Preferably, described voltage changing module comprises power supply, contact transformer and middle exciting transformer, and described power supply is connected with described contact transformer and middle exciting transformer respectively, and described contact transformer connects described middle exciting transformer.
Preferably, described 500kV high-voltage shunt reactor turn-to-turn insulation performance testing device also comprises protective resistance, and described protective resistance is series between described voltage changing module and described discharging model.
Preferably, described discharging model is set to the tempered glass oil groove of girdle tests electrode.
Preferably, described discharging model also comprises inter-turn insulation defect model to be detected, and described inter-turn insulation defect model to be detected is arranged in the tempered glass oil groove of described girdle tests electrode.
Preferably, the length of the tempered glass oil groove of described girdle tests electrode is set to 520mm, 340mm, 450mm respectively.
Preferably, described power supply is the three-phase alternating-current supply being not less than 10KVA capacity, power frequency 380V.
Preferably, described contact transformer is the transtat manually or automatically that input and output rated voltage is respectively 380V.
The beneficial effects of the utility model comprise: this pick-up unit be used for gather simulation different situations under inter-turn insulation defect waveform monitoring and analysis result, and collection result is carried out saving as turn-to-turn insulation fault detect and criterion, be convenient to determine turn-to-turn insulation failure condition fast.According to the contrast standard stored, this pick-up unit also can be used to detect new reactor, detects reactor turn-to-turn insulation and whether meets use standard, and whether there is inter-turn insulation defect, carries out the inspection work before the use of new reactor.
When reactor breaks down, the very first time is detected reactor turn-to-turn insulation performance, is detecting and after comparative analysis to voltage and current waveform, confirms whether fault is caused by turn-to-turn insulation, and such as coil insulation punctures over the ground, turn-to-turn insulation short circuit etc.If so, then fault restoration can be carried out, if not, so just can get rid of turn-to-turn insulation fault, carry out next step and detect, confirm real guilty culprit.In addition, the testing result of this pick-up unit also can be used for the analysis of auxiliary Reactor Fault, helps technician's quick position Reactor Fault reason, accelerates work efficiency.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, for those of ordinary skills, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
A kind of 500kV high-voltage shunt reactor turn-to-turn insulation performance testing device structural representation that Fig. 1 provides for the utility model embodiment;
In Fig. 1, symbol represents:
1-voltage changing module, 2-voltage divider, 3-discharging model, 4-Rogowsky coil, 5-high-voltage probe, 6-oscillograph, 7-contact type voltage regulator, exciting transformer in the middle of 8-, 9-power supply, 10-protective resistance.
Embodiment
The utility model embodiment provides a kind of proving installation of 500kV high-voltage shunt reactor turn-to-turn insulation performance.Technical scheme in the utility model is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all should belong to the scope of the utility model protection.
Be more than core concept of the present utility model, in order to make those skilled in the art person understand the utility model scheme better, below in conjunction with accompanying drawing, the utility model is described in further detail.
See Fig. 1, it is the proving installation structural representation of a kind of 500kV high-voltage shunt reactor turn-to-turn insulation performance that the utility model embodiment provides.
The 500kV high-voltage shunt reactor turn-to-turn insulation performance testing device that the utility model provides comprises: voltage changing module 1, voltage divider 2, discharging model 3, Rogowsky coil 4, high-voltage probe 5 and oscillograph 6.Voltage changing module 1 is connected in series with discharging model 3 and Rogowsky coil 4, and voltage divider 2 is connected in parallel with discharging model 3 and Rogowsky coil 4, and high-voltage probe 5 and oscillograph 6 are connected in series and are parallel to the two ends of discharging model 3.
Voltage changing module 1 comprises power supply 9, contact type voltage regulator 7 and middle exciting transformer 8.Power supply 9 is connected with contact type voltage regulator 7 and middle exciting transformer 8 respectively, and contact type voltage regulator 7 connects middle exciting transformer 8.Wherein, power supply 9 for being not less than power frequency (50Hz) the 380V three-phase alternating-current supply 9 of 10kVA capacity, and is equipped with corresponding earth leakage protection, for test loop provides safe and reliable test source.Power supply 9 inputs to contact type voltage regulator 7, and input and output rated voltage is the manual and automatically adjustable transformer of 380V, is the input voltage that test loop provides continuously adjustabe stable.Middle exciting transformer 8, input and output rated voltage is respectively 380V/430V/50kV/75kV, provides high-voltage test electric power for turn insulation detects.
Voltage divider 2, is connected in parallel on discharging model 3 and Rogowsky coil 4 two ends, and for high-potting provides the function of monitoring test voltage, and attached measurement gauge outfit can record trial voltage value when puncturing automatically.
Discharging model 3 is the tempered glass oil groove of the girdle tests electrode of long 520mm, wide 340mm and high 450mm.
Rogowsky coil 4, input current 5A ~ 100kA, output 0 ~ 20mA0 ~ 5V0 ~ 10V, the corresponding 0 ~ 3MHz of frequency band, measure the current parameters of discharging model 3 under high-potting voltage.
High-voltage probe 5, the trial voltage waveform of monitoring high tension loop, inputs to oscillograph 6 after signal conversion and monitors.
Oscillograph 6, four-way, 150/100/70MHz frequency range, sampling rate 1GSa/s and 25GSa/s, voltage 2mV ~ 10V are the 3 times turn to turn test monitorings of different discharging model and analytical voltage and current waveform.
Test philosophy: power frequency 380V three-phase alternating-current supply supply input contact type voltage regulator 7, the output voltage of middle exciting transformer 8 is controlled by regulation contact voltage regulator 7, middle exciting transformer 8 is applied on discharging model 3, and trial voltage value when being punctured by the measurement gauge outfit monitoring test of voltage divider 2, adopt Rogowsky coil 4 and high-voltage probe 5 to measure the electric current of test loop and voltage respectively simultaneously and after signal conversion, input to oscillograph 6 carry out waveform monitoring and analysis.
In order to oscillograph 6 is broken in the counterattack preventing turn-to-turn insulation high-potting from puncturing rear formation, be connected in series with protective resistance 10 between voltage changing module 1 and discharging model 3, the resistance value of protective resistance 10 is 100k Ω.
In addition, the utility model also comprises inter-turn insulation defect model to be detected, and this pick-up unit comprises following four kinds:
1. the turn-to-turn insulation model between normal wires;
2. the turn-to-turn insulation model of 5mm cushion block is had between wire;
3. jagged between wire turn-to-turn insulation model;
4. between wire, damaged area is about 1cm
2turn-to-turn insulation model.
But above-mentioned four kinds of models should as the restriction of the utility model protection domain, and those skilled in the art can select other defect model according to actual needs, and it all should fall within protection domain of the present utility model.
Testing process:
The correct line of test is completed according to test philosophy, voltage changing module 1 is connected in series with discharging model 3 and Rogowsky coil 4, voltage divider 2 is connected in parallel with discharging model 3 and Rogowsky coil 4, and high-voltage probe 5 and oscillograph 6 are connected in series and are parallel to the two ends of discharging model 3.
Get four kinds of inter-turn insulation defect models to be detected to be respectively positioned in the tempered glass oil groove of girdle tests electrode and to test;
Record turn-to-turn insulation breakdown voltage value, current waveform and the voltage waveform under different model;
Analyze voltage and current waveform when different inter-turn insulation defect model to be detected punctures, and with the contrast under normal turn-to-turn insulation model, and store the criterion and the contrast standard that are formed and judge inter-turn insulation defect, judge having the greatest impact to turn-to-turn insulation performance under which kind of defect condition.
In reality, for jagged inter-turn insulation defect.When reactor breaks down, isolated part after disintegration is taken back laboratory with jagged turn-to-turn insulation sample, this proving installation is used to test, and the same batch turn-to-turn insulation sample jagged with the band of simulation and the normal normal turn-to-turn insulation with batch sample contrast, find out disintegration part with failure modes situation corresponding to jagged inter-turn insulation defect sample by the analysis of image data, thus determine the reason of turn-to-turn insulation fault.
The test result of this proving installation can in conjunction with conventional electrical test data, dispatch from the factory or check that the special test data (as: office puts and withstand voltage test data) of handing-over, daily on-line monitoring chromatographic data or the scene test figure etc. that draws oil sample comprehensively is analyzed.Thus, auxiliary judgment the need of further hanging cover inspection, and, if equipment there occurs fault really, also can assistant analysis equipment failure.If through detecting, Reactor Fault not being caused by turn-to-turn insulation fault, then can get rid of the reason of turn-to-turn insulation fault, carrying out other and detecting.
Due in electric net device, the long loss produced apart from transmission of electricity along with the higher meeting of electric pressure more and more less, for cloud net, major network is mainly 500kV, 220kV and 110kV, so each side of comprehensive power grid operation is considered only to have installed high-voltage shunt reactor in 500kV side, being promoted in glory of circuit offside can be reduced on the one hand, the reactive-load compensation of long distance powedr transmission band can be compensated on the other hand and reduce high voltage bus power frequency stable state high pressure.So the turn to turn insulation test device that the utility model provides is mainly used in 500kV high-voltage shunt reactor turn-to-turn insulation.
Seen from the above description, this proving installation for detecting the performance test of high resistance device turn-to-turn insulation, by the test to different inter-turn insulation defect model, the reactor turn-to-turn insulation Performance Detection of Erecting and improving and criterion.So this proving installation can be used for high-voltage shunt reactor manufacturing firm and works out the better coil of performance, also can be applied in units such as being engaged in the research of 500kV high-voltage shunt reactor, operation and maintenance simultaneously.
It should be noted that, in this article, the such as relational terms of " first " and " second " etc. and so on is only used for an entity or operation to separate with another entity or operational zone, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
The above is only embodiment of the present utility model, those skilled in the art is understood or realizes the utility model.To be apparent to one skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (8)
1. a 500kV high-voltage shunt reactor turn-to-turn insulation performance testing device, it is characterized in that, comprising: voltage changing module (1), voltage divider (2), discharging model (3), Rogowsky coil (4), high-voltage probe (5) and oscillograph (6);
Described voltage changing module (1) is connected in series with described discharging model (3) and Rogowsky coil (4), described voltage divider (2) is connected in parallel with described discharging model (3) and Rogowsky coil (4), and described high-voltage probe (5) and oscillograph (6) are connected in series and are parallel to the two ends of described discharging model (3).
2. 500kV high-voltage shunt reactor turn-to-turn insulation performance testing device according to claim 1, it is characterized in that, described voltage changing module (1) comprises power supply (9), contact type voltage regulator (7) and middle exciting transformer (8), described power supply (9) is connected with described contact type voltage regulator (7) and middle exciting transformer (8) respectively, and described contact type voltage regulator (7) connects described middle exciting transformer (8).
3. 500kV high-voltage shunt reactor turn-to-turn insulation performance testing device according to claim 1; it is characterized in that; described 500kV high-voltage shunt reactor turn-to-turn insulation performance testing device also comprises protective resistance (10), and described protective resistance (10) is series between described voltage changing module (1) and described discharging model (3).
4. 500kV high-voltage shunt reactor turn-to-turn insulation performance testing device according to claim 1, it is characterized in that, described discharging model (3) is set to the tempered glass oil groove of girdle tests electrode.
5. 500kV high-voltage shunt reactor turn-to-turn insulation performance testing device according to claim 4, it is characterized in that, described discharging model (3) also comprises inter-turn insulation defect model to be detected, and described inter-turn insulation defect model to be detected is arranged in the tempered glass oil groove of described girdle tests electrode.
6. 500kV high-voltage shunt reactor turn-to-turn insulation performance testing device according to claim 4, it is characterized in that, the length of the tempered glass oil groove of described girdle tests electrode is set to 520mm, 340mm, 450mm respectively.
7. 500kV high-voltage shunt reactor turn-to-turn insulation performance testing device according to claim 2, it is characterized in that, described power supply (9) is for being not less than the three-phase alternating-current supply of 10KVA capacity, power frequency 380V.
8. 500kV high-voltage shunt reactor turn-to-turn insulation performance testing device according to claim 2, is characterized in that, described contact type voltage regulator (7) is respectively the transtat manually or automatically of 380V for input and output rated voltage.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520962950.2U CN205139307U (en) | 2015-11-26 | 2015-11-26 | 500kV high pressure parallel reactor interturn insulation capability test device |
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| CN201520962950.2U CN205139307U (en) | 2015-11-26 | 2015-11-26 | 500kV high pressure parallel reactor interturn insulation capability test device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105259488A (en) * | 2015-11-26 | 2016-01-20 | 云南电网有限责任公司电力科学研究院 | 500kV high-voltage parallel electric reactor turn-to-turn insulation performance testing platform |
| CN113639784A (en) * | 2020-04-27 | 2021-11-12 | 安徽帕维尔智能技术有限公司 | Intelligent electric wire netting terminal monitoring devices |
| CN114859186A (en) * | 2022-04-11 | 2022-08-05 | 江苏邦士医疗科技有限公司 | Device and method for rapidly measuring lowest dielectric strength margin |
-
2015
- 2015-11-26 CN CN201520962950.2U patent/CN205139307U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105259488A (en) * | 2015-11-26 | 2016-01-20 | 云南电网有限责任公司电力科学研究院 | 500kV high-voltage parallel electric reactor turn-to-turn insulation performance testing platform |
| CN113639784A (en) * | 2020-04-27 | 2021-11-12 | 安徽帕维尔智能技术有限公司 | Intelligent electric wire netting terminal monitoring devices |
| CN114859186A (en) * | 2022-04-11 | 2022-08-05 | 江苏邦士医疗科技有限公司 | Device and method for rapidly measuring lowest dielectric strength margin |
| CN114859186B (en) * | 2022-04-11 | 2023-05-09 | 江苏邦士医疗科技有限公司 | Device and method for rapidly measuring minimum dielectric strength margin |
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