CN105223478A - Based on the GIS partial discharge live detection test unit of defects simulation - Google Patents
Based on the GIS partial discharge live detection test unit of defects simulation Download PDFInfo
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- CN105223478A CN105223478A CN201510681725.6A CN201510681725A CN105223478A CN 105223478 A CN105223478 A CN 105223478A CN 201510681725 A CN201510681725 A CN 201510681725A CN 105223478 A CN105223478 A CN 105223478A
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Abstract
The invention discloses a kind of GIS partial discharge live detection test unit based on defects simulation, comprise partial discharge-free test transformer, detection impedance is put without office, detector is put in GIS defects simulation equipment and charged office, partial discharge-free test transformer is connected with the defective FRU be preset in GIS defects simulation equipment by putting detection impedance without office, GIS defects simulation device interior is provided with built-in wideband superfrequency sensor, GIS defects simulation device external is provided with external wideband superfrequency sensor, built-in wideband superfrequency sensor, the input end that external wideband superfrequency sensor puts detector with charged office is respectively connected, the present invention can be used in the GIS partial discharge live detection test under all kinds of defects simulation, can in all kinds of defect of real simulation, carry out the live detection test of local discharge signal during all kinds of defect, there is structural principle simple, required cost is low, the advantage that test findings reliability is high.
Description
Technical field
The present invention relates to live detection and the diagnostic techniques of GIS defect, be specifically related to a kind of GIS partial discharge live detection test unit based on defects simulation.
Background technology
GIS device due to floor area little, operational reliability is high, electric system application widely, especially at power supply system, most widely used, its ruuning situation is directly connected to the reliability of the person, device security and customer power supply.Because GIS is that provision for sealing, research technique are limited, the time between overhauls(TBO) is longer, and preventive trial traditionally or routine test are difficult to find internal defects, or just there will be insulation fault in the test period, the loss caused and affect huge.In recent years, the live detection technical development of power equipment is rapid, for high-tension switch cabinet, due to the impact of the factor such as aging after equipment quality defect and long-time running, GIS 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 GIS device in advance.Therefore, GIS device live detection technology is studied to the safe and stable operation and the customer power supply reliability important in inhibiting that ensure GIS device.
At present, GIS device live detection technology is still in the starting stage, and the application of GIS device office being put to live detection technology is also only confined to the reading of live detection instrument data, empirical, subjective; Meanwhile, current GIS device office puts live detection technology and is also in theoretical research and desirable defects simulation stage, cannot for the live detection signal characteristic of GIS equipment partial discharge 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: for the problems referred to above of prior art, there is provided a kind of can all kinds of defect of real simulation, the live detection test of local discharge signal when carrying out all kinds of defect in GIS analogue means, the GIS partial discharge live detection test unit based on defects simulation that simple, the required cost of structural principle is low, test findings reliability is high.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is:
A kind of GIS partial discharge live detection test unit based on defects simulation, comprise partial discharge-free test transformer, detection impedance is put without office, detector is put in GIS defects simulation equipment and charged office, described partial discharge-free test transformer is connected with the defective FRU be preset in GIS defects simulation equipment by putting detection impedance without office, described GIS defects simulation device interior is provided with built-in wideband superfrequency sensor, described GIS defects simulation device external is provided with external wideband superfrequency sensor, described built-in wideband superfrequency sensor, the input end that external wideband superfrequency sensor puts detector with charged office is respectively connected.
Preferably, described GIS defects simulation equipment comprises the GIS tank body presetting defective FRU, conductor is provided with in described GIS tank body, described defective FRU comprises most advanced and sophisticated defective FRU, suspension defective FRU, void defects parts, particle defects parts, loose contact current mode defective FRU, described most advanced and sophisticated defective FRU, suspension defective FRU, void defects parts, particle defects parts, loose contact current mode defective FRU is placed in GIS tank body respectively by an adjusting screw(rod) movable cloth for adjustment stroke, described conductor lays respectively at most advanced and sophisticated defective FRU, suspension defective FRU, void defects parts, particle defects parts, in the adjustment stroke of loose contact current mode defective FRU, the top of described adjusting screw(rod) is provided with handle, described adjusting screw(rod) and GIS tank body are threaded, described conductor respectively with most advanced and sophisticated defective FRU, suspension defective FRU, void defects parts, particle defects parts, an electrode contact of loose contact current mode defective FRU or gap are arranged.
Preferably, described GIS tank body is provided with the high pressure coupling sleeve pipe for the extraneous undesired signal that is coupled, and described high pressure coupling sleeve pipe is connected with conductor.
Preferably, described conductor is serially connected with disconnector, and the operating mechanism fixed and arranged of described disconnector is on GIS tank body, described high pressure coupling sleeve pipe is connected with conductor by disconnector.
Preferably, at least one is provided with in described GIS tank body for monitoring the video probe of defective FRU.
Preferably, the present invention also comprises the Apparent discharge magnitude monitoring modular of the defective FRU local discharge signal Apparent discharge magnitude under charging operation state for monitoring GIS defects simulation equipment, be provided with RC divider in described GIS tank body, described Apparent discharge magnitude monitoring modular by RC divider with put without office detect impedance be connected.
Preferably, described Apparent discharge magnitude monitoring modular is that detector is put in off-line office.
Preferably, detector is put in described charged office is that detector is put in the charged office of superfrequency.
Preferably, described built-in wideband superfrequency sensor, external wideband superfrequency sensor are the wideband superfrequency sensor of 300MHz-1500MHz.
The GIS partial discharge live detection test unit that the present invention is based on defects simulation has following advantage:
1, the GIS partial discharge live detection test unit that the present invention is based on defects simulation comprises partial discharge-free test transformer, detection impedance is put without office, detector is put in GIS defects simulation equipment and charged office, partial discharge-free test transformer is connected with the defective FRU be preset in GIS defects simulation equipment by putting detection impedance without office, GIS defects simulation device interior is provided with built-in wideband superfrequency sensor, GIS defects simulation device external is provided with external wideband superfrequency sensor, built-in wideband superfrequency sensor, the input end that external wideband superfrequency sensor puts detector with charged office is respectively connected, shelf depreciation excitation can be applied to the defective FRU be preset in GIS defects simulation equipment by partial discharge-free test transformer, preset defective FRU is made to produce shelf depreciation, and put by charged office the local discharge signal that detector can gather defective FRU, thus for the GIS partial discharge live detection test under all kinds of defects simulation, can in all kinds of defect of real simulation, carry out the live detection test of local discharge signal during all kinds of defect, there is structural principle simple, required cost is low, the advantage that test findings reliability is high.
2, the present invention carrys out Simulated GlS defect by GIS defects simulation equipment, can preset most advanced and sophisticated defect, suspension defect, void defects, particle defects four kinds of exemplary voltages defects and loose contact current mode defect etc. as required, defect type can be expanded neatly, what GIS partial discharge was simulated is more comprehensive, truly can reflect the defect characteristics of GIS, and defective FRU is without the need to dismounting, thus can switching tests type easily.
Accompanying drawing explanation
Fig. 1 is the framed structure schematic diagram of the embodiment of the present invention.
Fig. 2 is the structural representation of GIS tank body in the embodiment of the present invention.
Fig. 3 is the structural representation of a defective FRU in the embodiment of the present invention.
Marginal data: 1, partial discharge-free test transformer; 2, detection impedance is put without office; 3, GIS defects simulation equipment; 30, GIS tank body; 301, high pressure coupling sleeve pipe; 302, video probe; 31, built-in wideband superfrequency sensor; 32, external wideband superfrequency sensor; 33, most advanced and sophisticated defective FRU; 34, suspension defective FRU; 35, void defects parts; 36, particle defects parts; 37, loose contact current mode defective FRU; 38, conductor; 381, disconnector; 382, operating mechanism; 39, adjusting screw(rod); 391, handle; 4, detector is put in charged office; 5, Apparent discharge magnitude monitoring modular; 51, RC divider.
Embodiment
As shown in Figure 1, the present embodiment comprises partial discharge-free test transformer 1 based on the GIS partial discharge live detection test unit of defects simulation, put without office and detect impedance 2, detector 4 is put in GIS defects simulation equipment 3 and charged office, partial discharge-free test transformer 1 is connected with the defective FRU be preset in GIS defects simulation equipment 3 by putting detection impedance 2 without office, GIS defects simulation equipment 3 inside is provided with built-in wideband superfrequency sensor 31, GIS defects simulation equipment 3 outside is provided with external wideband superfrequency sensor 32, built-in wideband superfrequency sensor 31, external wideband superfrequency sensor 32 puts detector 4 respectively input end with charged office is connected.The present embodiment can apply shelf depreciation excitation to the defective FRU be preset in GIS defects simulation equipment 3 by partial discharge-free test transformer 1, the defective FRU be preset in GIS defects simulation equipment 3 is made to produce shelf depreciation, and put by charged office the local discharge signal that detector 4 can gather defective FRU, thus for the GIS partial discharge live detection test under all kinds of defects simulation, can all kinds of defect of real simulation, carry out the live detection test of local discharge signal during all kinds of defect, there is structural principle simple, required cost is low, the advantage that test findings reliability is high.
In the present embodiment, partial discharge-free test transformer 1 provides trial voltage by putting detection impedance 2 without office to the GIS defects simulation equipment 3 presetting defective FRU, partial discharge-free test transformer 1 is without shelf depreciation pressure-producing part, concrete employing XD-200 type product, thus shelf depreciation is not produced in boost process, avoid impacting the test of local discharge signal live detection.
The present embodiment also comprises the Apparent discharge magnitude monitoring modular 5 of the defective FRU local discharge signal Apparent discharge magnitude under charging operation state for monitoring GIS defects simulation equipment 3, be provided with RC divider 51 in GIS tank body 30, Apparent discharge magnitude monitoring modular 5 by RC divider 51 with put without office detect impedance 2 be connected.Monitored the Apparent discharge magnitude obtained by Apparent discharge magnitude monitoring modular 5, put the Partial discharge signal that detector 4 detects to charged office and provide the reference frame of discharge capacity size, thus the relation between true partial discharge quantity and live detection signal characteristic can be obtained.Apparent discharge magnitude monitoring modular 5 detects and presets partial discharge quantity under the GIS defects simulation equipment 3 charging operation state of defective FRU and as the Apparent discharge magnitude of local discharge signal, put by the actual partial discharge quantity of Apparent discharge magnitude monitoring modular 5 and charged office the local discharge signal that detector 4 detects to compare, can so that systematic study live detection signal characteristic and true discharge capacity relation, and the validity etc. detected, thus be establishment GIS live detection technical manual, accurate evaluation switch cubicle operation conditions and formulation GIS maintenance decision provide great importance.In the present embodiment, Apparent discharge magnitude monitoring modular 5 puts detector for off-line office, and Apparent discharge magnitude monitoring modular 5 specifically adopts XD51 type numeral office to put detector.
In the present embodiment, charged office puts detector 4 and puts detector for the charged office of superfrequency, and concrete employing PDS-T90 type detector, there are ultrasonic wave electrified detection, UHF band electro-detection two kinds of functions.
In the present embodiment, built-in wideband superfrequency sensor 31, external wideband superfrequency sensor 32 are the wideband superfrequency sensor of 300MHz-1500MHz.In the present embodiment, detector 4 is put for detecting the local discharge signal of GIS defects simulation equipment 3 under charging operation state in charged office, when the defective FRU generation shelf depreciation of GIS defects simulation equipment 3, the Partial discharge signal also outside radiated electromagnetic wave of 300MHz-1500MHz will be produced, through built-in wideband superfrequency sensor 31, external wideband superfrequency sensor 32 is converted into electric signal after receiving, and be transferred to charged office and put detector 4, by regulating the size of the defect order of severity controllable adjustable partial discharge quantity of partial discharge-free test transformer 1 or change defective FRU, the local discharge signal characteristic of actual GIS when all kinds of defect can be detected easily, and testing result can be directly used in and instructs in the live detection work of actual high-voltage GIS.
As shown in Figures 2 and 3, GIS defects simulation equipment 3 comprise preset defective FRU GIS tank body 30, GIS tank body 30 in be provided with conductor 38, defective FRU comprises most advanced and sophisticated defective FRU 33, suspension defective FRU 34, void defects parts 35, particle defects parts 36, loose contact current mode defective FRU 37, most advanced and sophisticated defective FRU 33, suspension defective FRU 34, void defects parts 35, particle defects parts 36, loose contact current mode defective FRU 37 is placed in GIS tank body 30 respectively by adjusting screw(rod) 39 movable cloth for adjustment stroke, and conductor 38 lays respectively at most advanced and sophisticated defective FRU 33, suspension defective FRU 34, void defects parts 35, particle defects parts 36, in the adjustment stroke of loose contact current mode defective FRU 37, the top of adjusting screw(rod) 39 is provided with handle 391, and adjusting screw(rod) 39 and GIS tank body 30 are threaded, conductor 38 respectively with most advanced and sophisticated defective FRU 33, suspension defective FRU 34, void defects parts 35, particle defects parts 36, an electrode contact of loose contact current mode defective FRU 37 or gap are arranged.The present embodiment comprises most advanced and sophisticated defective FRU 33, suspension defective FRU 34, void defects parts 35, particle defects parts 36, loose contact current mode defective FRU 37 by the defective FRU be preset in GIS tank body 3, can the tip at GIS device scene, suspension electrode, air gap, free particulate and loose contact truly, the defect situation of true reflection GIS.Adjusting screw(rod) 39 is rotated by handle 391, the i.e. situation that comes into operation of adjustable corresponding defective FRU (most advanced and sophisticated defective FRU 33, suspension defective FRU 34, void defects parts 35, particle defects parts 36, loose contact current mode defective FRU 37), time such as only for simulating most advanced and sophisticated defect, decline most advanced and sophisticated defective FRU 33 input, suspension defective FRU 34, void defects parts 35, particle defects parts 36, loose contact current mode defective FRU 37 are risen and exit, can realize only simulating most advanced and sophisticated defect.GIS defects simulation equipment 3 builds the defects simulation of GIS for actual high-voltage switch cubicle and live detection test platform is put in office, the defect of actual GIS is simulated by the GIS tank body 30 presetting defective FRU, all kinds of defect is all by being with defective original parts to realize in GIS, 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 GIS operational process easily.
As shown in Figure 2, GIS tank body 30 is provided with the high pressure coupling sleeve pipe 301 for the extraneous undesired signal that is coupled, high pressure coupling sleeve pipe 301 is connected with conductor 38, and external interference signal is passed to the inside of GIS tank body 3 by the terminal block (being equivalent to antenna) of high pressure coupling sleeve pipe 4.High pressure coupling sleeve pipe 301, can the running environment of imitating substation reality for the extraneous undesired signal that is coupled, for simulated field GIS device office put detect significant.
As shown in Figure 2, conductor 38 is serially connected with disconnector 381, and operating mechanism 382 fixed and arranged of described disconnector 381 is on GIS tank body 30, high pressure coupling sleeve pipe 301 is connected with conductor 38 by disconnector 381.The input state of high pressure coupling sleeve pipe 301 can be controlled easily by disconnector 381.
As shown in Figure 2, being provided with at least one in GIS tank body 30 for monitoring the video probe 302 of defective FRU, input and the shelf depreciation state of defective FRU can being detected conveniently by video, test convenient.
The present embodiment puts live detection test method based on the GIS office of the GIS partial discharge live detection test unit of defects simulation, and step comprises: 1) defective FRU is preset: according to defect type preset defect parts in GIS defects simulation equipment 3 of test; 2) detection is put in office: the trial voltage regulating partial discharge-free test transformer 1 to export respectively, the defect level of defective FRU, and put detector 4 by charged office and detect and preset the local discharge signal of GIS defects simulation equipment 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 in GIS defects simulation equipment 3, 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 GlS defects simulation equipment 3 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.For verifying the validity of the present embodiment, the present embodiment being tested and trys out, good, esy to use, safe and reliable through test proving effect, reach designing requirement completely.
The above is only the preferred embodiment of the present invention, protection scope of the present invention be not only confined to above-described embodiment, and all technical schemes belonged under thinking of the present invention all belong to protection scope of the present invention.It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (9)
1. the GIS partial discharge live detection test unit based on defects simulation, it is characterized in that: comprise partial discharge-free test transformer (1), put without office and detect impedance (2), detector (4) is put in GIS defects simulation equipment (3) and charged office, described partial discharge-free test transformer (1) is connected with the defective FRU be preset in GIS defects simulation equipment (3) by putting detection impedance (2) without office, described GIS defects simulation equipment (3) inside is provided with built-in wideband superfrequency sensor (31), described GIS defects simulation equipment (3) outside is provided with external wideband superfrequency sensor (32), described built-in wideband superfrequency sensor (31), external wideband superfrequency sensor (32) puts detector (4) respectively input end with charged office is connected.
2. the GIS partial discharge live detection test unit based on defects simulation according to claim 1, it is characterized in that: described GIS defects simulation equipment (3) comprises the GIS tank body (30) presetting defective FRU, be provided with conductor (38) in described GIS tank body (30), described defective FRU comprises most advanced and sophisticated defective FRU (33), suspension defective FRU (34), void defects parts (35), particle defects parts (36), loose contact current mode defective FRU (37), described most advanced and sophisticated defective FRU (33), suspension defective FRU (34), void defects parts (35), particle defects parts (36), loose contact current mode defective FRU (37) is placed in GIS tank body (30) respectively by an adjusting screw(rod) for adjustment stroke (39) movable cloth, and described conductor (38) lays respectively at most advanced and sophisticated defective FRU (33), suspension defective FRU (34), void defects parts (35), particle defects parts (36), in the adjustment stroke of loose contact current mode defective FRU (37), the top of described adjusting screw(rod) (39) is provided with handle (391), described adjusting screw(rod) (39) and GIS tank body (30) are threaded, described conductor (38) respectively with most advanced and sophisticated defective FRU (33), suspension defective FRU (34), void defects parts (35), particle defects parts (36), an electrode contact of loose contact current mode defective FRU (37) or gap are arranged.
3. the GIS partial discharge live detection test unit based on defects simulation according to claim 2, it is characterized in that: described GIS tank body (30) is provided with high pressure coupling sleeve pipe (301) for the extraneous undesired signal that is coupled, described high pressure coupling sleeve pipe (301) is connected with conductor (38).
4. the GIS partial discharge live detection test unit based on defects simulation according to claim 3, it is characterized in that: described conductor (38) is serially connected with disconnector (381), and operating mechanism (382) fixed and arranged of described disconnector (381) is on GIS tank body (30), described high pressure coupling sleeve pipe (301) is connected with conductor (38) by disconnector (381).
5. the GIS partial discharge live detection test unit based on defects simulation according to claim 4, is characterized in that: be provided with at least one in described GIS tank body (30) for monitoring the video probe (302) of defective FRU.
6. the GIS partial discharge live detection test unit based on defects simulation according to claim 5, it is characterized in that: the Apparent discharge magnitude monitoring modular (5) also comprising the defective FRU local discharge signal Apparent discharge magnitude under charging operation state for monitoring GIS defects simulation equipment (3), be provided with RC divider (51) in described GIS tank body (30), described Apparent discharge magnitude monitoring modular (5) by RC divider (51) with put without office detect impedance (2) be connected.
7. the GIS partial discharge live detection test unit based on defects simulation according to claim 6, is characterized in that: described Apparent discharge magnitude monitoring modular (5) puts detector for off-line office.
8. according to the GIS partial discharge live detection test unit based on defects simulation in claim 1 ~ 7 described in any one, it is characterized in that: described charged office puts detector (4) for the charged office of superfrequency and puts detector.
9. the GIS partial discharge live detection test unit based on defects simulation according to claim 8, is characterized in that: described built-in wideband superfrequency sensor (31), external wideband superfrequency sensor (32) are the wideband superfrequency sensor of 300MHz-1500MHz.
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| CN107505551A (en) * | 2017-09-21 | 2017-12-22 | 国家电网公司 | Gas-insulated stacked switch equipment superfrequency sensor arrangement experimental rig and application |
| CN109061423A (en) * | 2018-09-17 | 2018-12-21 | 重庆大唐国际武隆水电开发有限公司 | A kind of taper partial-discharge ultrahigh-frequency sensor and its design method |
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| CN110824313A (en) * | 2019-11-25 | 2020-02-21 | 深圳供电局有限公司 | Defect simulation structure of closed gas insulated switchgear |
| CN110824313B (en) * | 2019-11-25 | 2022-04-15 | 深圳供电局有限公司 | Defect simulation structure of closed gas insulated switchgear |
| CN113406489A (en) * | 2021-06-18 | 2021-09-17 | 国网宁夏电力有限公司培训中心 | Experimental system device and method for simulating real GIS three-station switch suspension potential |
| CN113960427A (en) * | 2021-10-21 | 2022-01-21 | 国网新疆电力有限公司电力科学研究院 | GIS ultrahigh frequency partial discharge test system |
| CN114594348A (en) * | 2022-01-28 | 2022-06-07 | 国网江苏省电力有限公司电力科学研究院 | Simulation device for GIL/GIS partial discharge high-frequency current propagation |
| WO2023142339A1 (en) * | 2022-01-28 | 2023-08-03 | 国网江苏省电力有限公司电力科学研究院 | Simulation device for high-frequency current propagation in gil/gis partial discharge |
| CN115394157A (en) * | 2022-08-04 | 2022-11-25 | 广西电网有限责任公司防城港供电局 | Switch cabinet simulated discharge device for teaching and training and use method |
| CN117538712A (en) * | 2024-01-09 | 2024-02-09 | 保定天威新域科技发展有限公司 | Discharge type and position switching device and discharge model |
| CN117538712B (en) * | 2024-01-09 | 2024-03-29 | 保定天威新域科技发展有限公司 | Discharge type and position switching device and discharge model |
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Application publication date: 20160106 |