CN104749507A - High voltage switchgear partial discharge conductive detection testing device and method based on defect simulation - Google Patents
High voltage switchgear partial discharge conductive detection testing device and method based on defect simulation Download PDFInfo
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- CN104749507A CN104749507A CN201510163024.3A CN201510163024A CN104749507A CN 104749507 A CN104749507 A CN 104749507A CN 201510163024 A CN201510163024 A CN 201510163024A CN 104749507 A CN104749507 A CN 104749507A
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Abstract
The invention discloses a high voltage switchgear partial discharge detection testing device and method based on defect simulation. The device comprises a test voltage raising module, a partial discharge conductive detection module and a high voltage switchgear with a defective part. The test voltage raising module supplies test voltage to the high voltage switchgear with the defective part; the partial discharge conductive detection module detects and outputs partial discharge signals of the high voltage switchgear with the defective part during conductive operation. The method includes 1, presetting the defective part according to the defect type; 2, detecting the partial discharge signals according to the different test voltages and detect levels on the basis of the current defect type; 3, changing the defective part, and switching the tests. By the aid of the device and method, various defects of the high voltage switchgear is simulated actually, the conductive detection tests of the partial discharge signals are performed according to various defects, and the device and method has the advantages that structure and principle are simple, the required cost is low and the test results are highly reliable.
Description
Technical field
The present invention relates to live detection and the diagnostic techniques field of high-tension switch cabinet defect, particularly relate to a kind of high-tension switch cabinet office based on defects simulation and put live detection test unit and method.
Background technology
High-tension switch cabinet is the Switch equipment that in electric system, quantity is the hugest, carries the function directly to customer power supply, and its ruuning situation is directly connected to customer power supply the reliability even safe and stable operation of main-transformer.Because high-tension switch cabinet substantial amounts, rotation test period are longer, preventive trial traditionally or routine test are difficult to find internal defects, or just there will be insulation fault in the test period, and the loss caused will be far longer than switch cubicle value itself.In recent years, the live detection technical development of power equipment is rapid, for high-tension switch cabinet, owing to being subject to the impact of environmental factor or the aging action of insulating part own, high-tension switch cabinet there will be all kinds of defect in During Process of Long-term Operation, these defects can cause the generation of shelf depreciation, can find these local discharge signals that may cause insulation fault in advance by live detection technology, are thus conducive to the latency defect finding high-tension switch cabinet in advance.Therefore, high-tension switch cabinet live detection technology is studied to the safe and stable operation and the customer power supply reliability important in inhibiting that ensure high-tension switch cabinet.
At present, high-tension switch cabinet live detection technology is still in the starting stage, and the application for switch cabinet partial discharge live detection technology is also only confined to live detection instrument data and reads, empirical, subjective; Simultaneously, current switch cabinet partial discharge live detection technology is also in theoretical research and desirable defects simulation stage, namely be not the defects simulation carried out for actual switch cabinet, its result of study is applied in actual switch cabinet and can there is larger difference, also cannot for the live detection signal characteristic of high-tension switch cabinet and true discharge capacity relation, detect validity etc. and carry out comprehensive system Journal of Sex Research.
Summary of the invention
The technical problem to be solved in the present invention is just: the technical matters existed for prior art, the invention provides that simple, the required cost of a kind of structural principle is low and live detection test unit and method are put in test findings reliability the is high high-tension switch cabinet office based on defects simulation, can in actual high-voltage switch cubicle all kinds of defect of real simulation, carry out simultaneously local discharge signal during all kinds of defect live detection test.
For solving the problems of the technologies described above, the technical scheme that the present invention proposes is:
Live detection test unit is put in a kind of high-tension switch cabinet office based on defects simulation, comprise test compression module, office to put live detection module, preset the high-tension switch cabinet of defective FRU, described test compression module is connected with the described high-tension switch cabinet presetting defective FRU; Described test compression module provides trial voltage to the described high-tension switch cabinet presetting defective FRU, described office put live detection module detect described in preset defective FRU the local discharge signal of high-tension switch cabinet under charging operation state and export.
Further improvement as apparatus of the present invention: also comprise the Apparent discharge magnitude monitoring modular be connected with the described high-tension switch cabinet presetting defective FRU, presets high-tension switch cabinet shelf depreciation Apparent discharge magnitude under charging operation state of defective FRU described in described Apparent discharge magnitude monitoring module monitors.
Further improvement as apparatus of the present invention: described Apparent discharge magnitude monitoring modular is pulse current Partial Discharge Detection assembly, described pulse current Partial Discharge Detection assembly comprises interconnective resistive-capacitive voltage divider unit and detector is put in office, described resistive-capacitive voltage divider unit comprises in the derided capacitors C be connected in series and detects impedance R, preset the high-pressure side of the high-tension switch cabinet of defective FRU described in one end connection of described derided capacitors C, the other end presets the earth terminal of the high-tension switch cabinet of defective FRU described in impedance R connection by detecting; Detector is put by presetting high-tension switch cabinet shelf depreciation Apparent discharge magnitude under charging operation state of defective FRU described in the collection of described resistive-capacitive voltage divider unit in described office.
Further improvement as apparatus of the present invention: described defective FRU is the one in the defective support insulator of band, current transformer, contact box, electrification display, lightning arrester.
Further improvement as apparatus of the present invention: it is one in ultrasonic wave electrified detector, transient earth voltage live detection instrument and UHF band electro-detection instrument that live detection module is put in described office.
The present invention also provides a kind of test method of putting live detection test unit based on above-mentioned high-tension switch cabinet office, and step comprises:
1) defective FRU is preset: the defect type according to test determines defective FRU preset in described high-tension switch cabinet;
2) detection is put in office: the trial voltage regulating described test compression module to export respectively, the defect level of defective FRU, and put live detection module by described office and detect and preset the local discharge signal of high-tension switch cabinet under different trial voltages, different defect level of defective FRU, obtain shelf depreciation live detection signal when different tests voltage, different defect level under current defect type respectively;
3) test switches: when needing the test switching to next defect type, be the defective FRU that next defect type is corresponding by current defect part replacement, proceeds to and performs step 2), until complete the test of all defect type.
Further improvement as the inventive method: described step 2) in also comprise Apparent discharge magnitude monitoring step, concrete implementation step is: put detector by interconnective resistive-capacitive voltage divider unit and office and form pulse current Partial Discharge Detection assembly, described resistive-capacitive voltage divider unit comprises in the derided capacitors C be connected in series and detects impedance R, the high-tension switch cabinet high-pressure side of defective FRU is preset described in one end connection of described derided capacitors C, the other end presets the earth terminal of the high-tension switch cabinet of defective FRU described in impedance R connection by detecting, detector is put by presetting the high-tension switch cabinet of defective FRU described in the collection of described resistive-capacitive voltage divider unit at different tests voltage in described office, shelf depreciation Apparent discharge magnitude during different defect level.
Further improvement as apparatus of the present invention: described step 2) in by ultrasonic wave electrified detector, transient earth voltage live detection instrument or UHF band electro-detection instrument detect local discharge signal; Described step 2) the front measure field ground unrest that also comprises is for elimination interference source step.
Compared with prior art, the invention has the advantages that:
1) the present invention is simulated the defect of actual high-voltage switch cubicle by the high-tension switch cabinet presetting defective FRU, can in actual high-voltage switch cubicle operational process all kinds of defect characteristics of real simulation, effectively reduce the error of test findings, improve the reliability of test findings; Put the live detection test platform of live detection module construction local discharge signal with test compression module, office simultaneously, thus can detect the local discharge signal characteristic of actual high-voltage switch cubicle when all kinds of defect easily, and testing result can be directly used in the live detection work instructing actual high-voltage switch cubicle.
2) the present invention is the simulation carried out based on the high-tension switch cabinet of reality, rely on the test that defective FRU preset in high-tension switch cabinet effectively can realize different defect type, truly can reflect the defect characteristics of high-tension switch cabinet, and defective FRU is easy to dismounting and changes, thus can switching tests type easily;
3) high-tension switch cabinet office of the present invention puts live detection test unit and comprises Apparent discharge magnitude monitoring modular further, by Apparent discharge magnitude monitoring module monitors shelf depreciation Apparent discharge magnitude, using the foundation as local discharge signal treatment and analysis, thus can comprehensive and systematic analytic band power detection signal feature and the relation of true partial discharge quantity and the validity of detection.
Accompanying drawing explanation
The structural representation of Fig. 1 to be the present embodiment based on the high-tension switch cabinet office of defects simulation put live detection test unit.
Fig. 2 is the structural representation of the present embodiment middle-high voltage switch and defective FRU.
1, compression module is tested; 2, live detection module is put in office; 3, the high-tension switch cabinet of defective FRU is preset; 4, Apparent discharge magnitude monitoring modular; 41, resistive-capacitive voltage divider unit; 42, detector is put in office; 31, support insulator; 32, current transformer; 33, contact box; 34, electrification display; 35, lightning arrester.
Embodiment
Below in conjunction with Figure of description and concrete preferred embodiment, the invention will be further described, but protection domain not thereby limiting the invention.
As shown in Figure 1, the present embodiment puts live detection test unit based on the high-tension switch cabinet office of defects simulation, comprise test compression module 1, office to put live detection module 2, preset the high-tension switch cabinet 3 of defective FRU and Apparent discharge magnitude monitoring modular 4, test compression module 1, Apparent discharge magnitude monitoring modular 4 are connected with the high-tension switch cabinet 3 presetting defective FRU respectively.Test compression module 1 provides trial voltage to the high-tension switch cabinet 3 presetting defective FRU, office puts live detection module 2 and detects the local discharge signal preset under the high-tension switch cabinet 3 charging operation state of defective FRU, Apparent discharge magnitude monitoring modular 4 Real-Time Monitoring shelf depreciation Apparent discharge magnitude.Defective FRU is the defective original parts of high-tension switch cabinet inner band, the corresponding preset different defective FRU of test of different defect type.
The present embodiment builds the defects simulation of high-tension switch cabinet for actual high-voltage switch cubicle and live detection test platform is put in office, the defect of actual high-voltage switch cubicle is simulated by the high-tension switch cabinet presetting defective FRU, all kinds of defect is all by being with defective original parts to realize in switch cubicle, effectively reduce the error of test findings, improve the reliability of test findings; In process of the test, defective FRU can be changed easily, can be realized the switching of dissimilar defect by dismounting defective FRU, thus can test all kinds of defects occurred in actual switch cabinet operational process easily.
In the present embodiment, put live detection module 2 by office and detect the local discharge signal of high-tension switch cabinet 3 under charging operation state presetting defective FRU, by regulating the size of the defect order of severity controllable adjustable partial discharge quantity of test compression module 1 or defective FRU, can detect the local discharge signal characteristic of actual high-voltage switch cubicle when all kinds of defect easily, and testing result can be directly used in and instructs in the live detection work of actual high-voltage switch cubicle.
In the present embodiment, it can be ultrasonic wave electrified detector, transient earth voltage live detection instrument or UHF band electro-detection instrument that live detection module 2 is put in office.Concrete, live detection module 2 is put in office can adopt PDS-T90 type detector, has ultrasonic wave electrified detection, transient earth voltage live detection and UHF band electro-detection three kinds of functions.
The Apparent discharge magnitude monitoring modular 4 of the present embodiment by being connected with the high-tension switch cabinet 3 presetting defective FRU, detects the shelf depreciation Apparent discharge magnitude of high-tension switch cabinet 3 under charging operation state presetting defective FRU in real time.The local discharge signal detected by the actual partial discharge quantity detected and live detection instrument is compared, can so that systematic study live detection signal characteristic and true discharge capacity relation and the validity etc. that detects, thus for establishment switch cabinet electrified inspection specifications, accurate evaluation switch cubicle operation conditions with formulate switch cubicle maintenance decision and provide great importance.
In the present embodiment, Apparent discharge magnitude monitoring modular 4 is specially pulse current Partial Discharge Detection assembly, pulse current Partial Discharge Detection assembly comprises interconnective resistive-capacitive voltage divider unit 41 and detector 42 is put in office, resistive-capacitive voltage divider unit 41 comprises in the derided capacitors C be connected in series and detects impedance R, one end of derided capacitors C connects the high-pressure side presetting the high-tension switch cabinet 3 of defective FRU, the other end by detect impedance R connect preset the high-tension switch cabinet 3 of defective FRU earth terminal, namely impedance R and one end common ground of high-tension switch cabinet 3 presetting defective FRU is detected, detector 42 is put by detecting the high-tension switch cabinet 3 shelf depreciation Apparent discharge magnitude under charging operation state presetting defective FRU described in impedance R collection in office.By the Apparent discharge magnitude that pulse current Partial Discharge Detection component detection obtains, provide the reference frame of discharge capacity size to the Partial discharge signal of live detection instrument detection, thus the relation between true partial discharge quantity and live detection signal characteristic can be obtained.
In the present embodiment, test compression module 1 is without shelf depreciation pressure-producing part, thus does not produce shelf depreciation in boost process, avoids impacting the test of local discharge signal live detection.The present embodiment test compression module 1 specifically adopts the transformer without shelf depreciation.
In the present embodiment, defective FRU is the defective internal part of band in high-tension switch cabinet, by the defect such as point discharge, internal discharge, suspended discharge, creeping discharge that defective FRU simulated high-pressure switch cubicle is common in actual motion.As shown in Figure 2, in the present embodiment, defective FRU can be with the support insulator 31 of defect, current transformer 32, contact box 33, electrification display 34 or lightning arrester 35 etc., also can be set as being with defective miscellaneous part according to test needs.
During practical application, first carry out test connection, and ensure that ground connection is good, needing before test plays a game puts detector 42 and carries out discharge capacity demarcation; Then utilize test compression module 1 to be pressurizeed to the high-tension switch cabinet 3 presetting defective FRU by busbar, and keep enough safe distances during pressurization; Then gather local discharge signal to office put in detector 42 by derided capacitors C, detection impedance R, put detector 42 by office and export Apparent discharge magnitude, detected the local discharge signal presetting the high-tension switch cabinet 3 of defective FRU by live detection instrument; Finally detector 42 is put and live detection instrument detects the data obtained, for follow-up data analysis in record office.
The present embodiment also provides a kind of high-tension switch cabinet office based on defects simulation to put live detection test method, and step comprises:
1) defective FRU is preset: according to defect type preset defect parts in high-tension switch cabinet of test;
2) detection is put in office: the trial voltage regulating test compression module 1 to export respectively, the defect level of defective FRU, and put live detection module 2 by office and detect and preset the local discharge signal of high-tension switch cabinet 3 under different trial voltages, different defect level of defective FRU, obtain local discharge signal when different tests voltage, different defect level under current defect type respectively
;
3) test switches: when needing the test switching to next defect type, be the defective FRU that next defect type is corresponding by current defect part replacement, proceeds to and performs step 2), until complete the test of all defect type.
Adopt said method, the test of all kinds of defect of simulated high-pressure switch cubicle can be switched easily, detect simultaneously and obtain the office that all kinds of defect comprises relation between local discharge signal and trial voltage, defect level and put characteristic.
In the present embodiment, step 2) in also comprise Apparent discharge magnitude monitoring step, concrete implementation step is: put detector 42 by interconnective resistive-capacitive voltage divider unit 41 and office and form pulse current Partial Discharge Detection assembly, resistive-capacitive voltage divider unit 41 comprises in the derided capacitors C be connected in series and detects impedance R, one end of derided capacitors C connects the high-pressure side presetting the high-tension switch cabinet 3 of defective FRU, the other end connects by detecting impedance R the earth terminal presetting the high-tension switch cabinet 3 of defective FRU, high-tension switch cabinet 3 that detector 42 presets defective FRU by resistive-capacitive voltage divider unit 41 collection is put at different tests voltage in office, shelf depreciation Apparent discharge magnitude during different defect level.
In the present embodiment, step 2) in detect local discharge signal by ultrasonic wave electrified detector, transient earth voltage live detection instrument or UHF band electro-detection instrument and detect local discharge signal; Step 2) the front measure field ground unrest that also comprises is for elimination interference source step, thus the accuracy of detection of raising local discharge signal.
For verifying that Usefulness Pair of the present invention invention has been test and trial run, good, esy to use, safe and reliable through test proving effect, reach designing requirement completely.
Above-mentioned just preferred embodiment of the present invention, not does any pro forma restriction to the present invention.Although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention.Therefore, every content not departing from technical solution of the present invention, according to the technology of the present invention essence to any simple modification made for any of the above embodiments, equivalent variations and modification, all should drop in the scope of technical solution of the present invention protection.
Claims (8)
1. put live detection test unit based on the high-tension switch cabinet office of defects simulation for one kind, it is characterized in that, comprise test compression module (1), office puts live detection module (2), presets the high-tension switch cabinet (3) of defective FRU, described test compression module (1) is connected with the described high-tension switch cabinet (3) presetting defective FRU; Described test compression module (1) provides trial voltage to the described high-tension switch cabinet (3) presetting defective FRU, described office put live detection module (2) detect described in preset defective FRU the local discharge signal of high-tension switch cabinet (3) under charging operation state and export.
2. live detection test unit is put in the high-tension switch cabinet office based on defects simulation according to claim 1, it is characterized in that: also comprise the Apparent discharge magnitude monitoring modular (4) be connected with the described high-tension switch cabinet (3) presetting defective FRU, described in described Apparent discharge magnitude monitoring modular (4) monitoring, preset high-tension switch cabinet (3) shelf depreciation Apparent discharge magnitude under charging operation state of defective FRU.
3. live detection test unit is put in the high-tension switch cabinet office based on defects simulation according to claim 2, it is characterized in that: described Apparent discharge magnitude monitoring modular (4) is pulse current Partial Discharge Detection assembly, described pulse current Partial Discharge Detection assembly comprises interconnective resistive-capacitive voltage divider unit (41) and detector (42) is put in office, described resistive-capacitive voltage divider unit (41) comprises in the derided capacitors C be connected in series and detects impedance R, the high-pressure side of the high-tension switch cabinet (3) of defective FRU is preset described in one end connection of described derided capacitors C, the other end presets the earth terminal of the high-tension switch cabinet (3) of defective FRU described in impedance R connection by detecting, detector (42) is put by presetting high-tension switch cabinet (3) shelf depreciation Apparent discharge magnitude under charging operation state of defective FRU described in described resistive-capacitive voltage divider unit (41) collection in described office.
4. live detection test unit is put in the high-tension switch cabinet office based on defects simulation according to claim 3, it is characterized in that: described defective FRU is the one in the defective support insulator of band (31), current transformer (32), contact box (33), electrification display (34), lightning arrester (35).
5. put live detection test unit according to the high-tension switch cabinet office based on defects simulation in Claims 1 to 4 described in any one, it is characterized in that: described office puts that live detection module (2) is ultrasonic wave electrified detector, one in transient earth voltage live detection instrument and UHF band electro-detection instrument.
6. put the test method of live detection test unit based on the high-tension switch cabinet office in Claims 1 to 5 described in any one, it is characterized in that, step comprises:
1) defective FRU is preset: according to defect type preset defect parts in described high-tension switch cabinet of test;
2) detection is put in office: the trial voltage regulating described test compression module (1) to export respectively, the defect level of defective FRU, and put live detection module (2) by described office and detect and preset the local discharge signal of high-tension switch cabinet (3) under different tests voltage, different defect level of defective FRU, obtain shelf depreciation live detection signal when different tests voltage, different defect level under current defect type respectively;
3) test switches: when needing the test switching to next defect type, be the defective FRU that next defect type is corresponding by current defect part replacement, proceeds to and performs step 2), until complete the test of all defect type.
7. live detection test method is put in the high-tension switch cabinet office based on defects simulation according to claim 6, it is characterized in that: described step 2) in also comprise Apparent discharge magnitude monitoring step, concrete implementation step is: put detector (42) by interconnective resistive-capacitive voltage divider unit (41) and office and form pulse current Partial Discharge Detection assembly, described resistive-capacitive voltage divider unit (41) comprises in the derided capacitors C be connected in series and detects impedance R, the high-pressure side of the high-tension switch cabinet (3) of defective FRU is preset described in one end connection of described derided capacitors C, the other end presets the earth terminal of the high-tension switch cabinet (3) of defective FRU described in impedance R connection by detecting, described office put detector (42) gathered by described resistive-capacitive voltage divider unit (41) described in preset the high-tension switch cabinet (3) of defective FRU at different tests voltage, shelf depreciation Apparent discharge magnitude under different defect level.
8. live detection test method is put in the high-tension switch cabinet office according to claim 6 or 7, it is characterized in that: described step 2) in by ultrasonic wave electrified detector, transient earth voltage live detection instrument or UHF band electro-detection instrument detect local discharge signal; Described step 2) the front measure field ground unrest that also comprises is for elimination interference source step.
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| CN110161383A (en) * | 2019-04-30 | 2019-08-23 | 云南电网有限责任公司电力科学研究院 | A kind of detection device for partial discharge of switch cabinet |
| CN110161383B (en) * | 2019-04-30 | 2020-07-28 | 云南电网有限责任公司电力科学研究院 | Switch cabinet partial discharge detection device |
| CN111812459A (en) * | 2020-06-02 | 2020-10-23 | 深圳供电局有限公司 | Simulation test system applied to switch cabinet partial discharge live detection |
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Application publication date: 20150701 |