CN207866958U - It is segmented adding pressure type insulated tension pole local discharge detection device - Google Patents
It is segmented adding pressure type insulated tension pole local discharge detection device Download PDFInfo
- Publication number
- CN207866958U CN207866958U CN201721424643.4U CN201721424643U CN207866958U CN 207866958 U CN207866958 U CN 207866958U CN 201721424643 U CN201721424643 U CN 201721424643U CN 207866958 U CN207866958 U CN 207866958U
- Authority
- CN
- China
- Prior art keywords
- insulated tension
- tension pole
- vacuum
- tank
- impedance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Testing Relating To Insulation (AREA)
Abstract
The utility model discloses segmentation adding pressure type insulated tension pole local discharge detection devices, including multiple isolating transformer, multiple adjustable transformers for being used to connect isolating transformer, multiple partial discharge-free test transformers for being used to connect adjustable transformer and insulated tension pole to be measured and generating high voltage, multiple protection impedances being serially connected on circuit, a vacuum test tank, a coupled capacitor and detection impedance for connecting high voltage power supply；Vacuum test tank connects vacuum pump, and vacuum test tank is connect with the terminal of coupled capacitor, detection impedance respectively, the also effective grounding of vacuum test tank；Coupled capacitor is connected with detection impedance, detects the terminal effective grounding of impedance；Partial discharge-free test transformer is divided into low-pressure section and high-pressure section；Further include being parallel to data collecting card in detection impedance, the input terminal of data collecting card connects PC machine.The utility model is segmented adding pressure type insulated tension pole local discharge detection device, can improve the defects detection efficiency and detection reliability of insulated tension pole.
Description
Technical field
The utility model belongs to Electric Power Equipment Insulation detection device technology field, and in particular to segmentation adding pressure type insulated tension pole
Local discharge detection device.
Background technology
Insulating device of the insulated tension pole as connection high potential part and zero potential part, carries prodigious voltage drop,
This proposes the insulation performance of pull rod very high requirement.With the raising of voltage class of electric power system, the impurity of insulated tension pole
Becoming with internal flaw problem influences an important factor for power equipment safety is run.Currently, the delivery test of insulated tension pole is (such as：
Partial discharge, pressure resistance etc.) internal defects can not be detected completely, in the accident that some insulated tension poles are burst, before transferring
Type-test report, show that insulated tension pole type approval test is qualified.But anatomy experiment hair is carried out to insulated tension pole afterwards
Existing, there are the internal flaws such as interlayer air gap, micro-crack in insulated tension pole.
As it can be seen that in traditional insulated tension pole Partial Discharge Detection exist the more difficult impurity detected in pull rod, interlayer air gap,
The problems such as specific location that the smaller micro-crack of size and electric discharge occur, has highlighted conventional Partial Discharge Detection means to exhausted
The low feature of Inner Defect Testing poor sensitivity, the efficiency of edge pull rod.Therefore, a kind of segmentation pressuring method of development, segmentation detection
The experimental provision of pull rod internal flaw, for improving the defects detection efficiency of insulated tension pole, improving detection reliability, guarantee electric power
The effective action and power network safety operation of equipment are of great significance.
Utility model content
The purpose of this utility model is to provide segmentation adding pressure type insulated tension pole local discharge detection devices, can improve insulation
The defects detection efficiency and detection reliability of pull rod.
The utility model the technical scheme adopted is that segmentation adding pressure type insulated tension pole local discharge detection device, including
Multiple isolating transformers for connecting high voltage power supply, multiple are used for multiple adjustable transformers for connecting isolating transformer
Connection adjustable transformer and insulated tension pole to be measured simultaneously generate the partial discharge-free test transformer of high voltage, multiple are serially connected on circuit
Protect impedance, a vacuum test tank, a coupled capacitor and a detection impedance；Vacuum test tank connects vacuum pump, very
Empty test tank is connect with the terminal of coupled capacitor, detection impedance respectively, the also effective grounding of vacuum test tank；Coupled capacitor and detection
Impedance is connected, and the terminal effective grounding of impedance is detected；Partial discharge-free test transformer is divided into low-pressure section and high-pressure section；Further include
It is parallel to data collecting card in detection impedance, the input terminal of data collecting card connects PC machine.
The utility model is also characterized by：
The model SG-10KVA of isolating transformer, input terminal connect 220V AC powers, output end connection described in
Adjustable transformer；The capacity of adjustable transformer is 30KVA, and output end connects the input terminal of partial discharge-free test transformer.
Detection impedance is composed in parallel by RX24-50W50 Ω J-types resistance and the capacitance of 30kV, 1000pf.
The model Pico6502 of data collecting card.
The tank wall of vacuum test tank is double-layer structure, and polytetrafluoroethylene (PTFE) gas is filled in tank inner cavity；Vacuum is tried
It tests the bottom-open of tank and is fixed on stainless steel base by fixing screws, flange, and set in the edge of stainless steel base
It is equipped with ground terminal, the center of top of vacuum test tank is provided with high-field electrode terminal, is also connected on the top of vacuum test tank
Have a vacuum tube, vacuum tube connects pressure vacuum gauge, be connected separately on the tank wall of vacuum test tank exhaust tube, gas tube,
Annular electrode conducting rod a, annular electrode conducting rod b, are provided with vacuum extraction valve, and vacuum extraction valve and vacuum on exhaust tube
Pump connects, and charge valve is provided on gas tube；Center of top in vacuum test tank is provided with insulated tension pole card slot A, and high
Pressure electrode terminal is connect with insulated tension pole card slot A；It is fixedly installed insulated tension pole card slot B in the center of stainless steel base, and
It is provided with spring in insulated tension pole card slot B, is drawn between insulated tension pole card slot A and insulated tension pole card slot B for insulation to be measured to be arranged
Bar, in being vertically disposed with annular electrode a, annular electrode b on insulated tension pole.
The model V-i240SV of vacuum pump.
Vacuum extraction valve is GM-25 extraction valves, carries vacuum measurement mouth thereon, is installed on apart from vacuum test tank top
On tank wall at 100mm；
Annular electrode conducting rod a passes through tank wall, and is fixed respectively with nut inside and outside tank wall, and annular electrode is led
Electric pole a is mounted on the tank wall apart from vacuum test tank top 315mm, and on a vertical line with vacuum extraction valve.
Charge valve is GM-10 charge valves, is installed on the tank wall at stainless steel base 120mm；
Annular electrode conducting rod b passes through tank wall, and is fixed respectively with nut inside and outside tank wall, and annular electrode is led
On the tank wall of the stainless steel base 315mm of electric pole b mounting distances, and on a vertical line with charge valve.
Protection impedance is RC parallel circuits, and protection impedance is serially connected with the high-pressure section of partial discharge-free test transformer and vacuum is tried
It tests between the high-field electrode terminal of tank.
The beneficial effects of the utility model are：
(1) the utility model is segmented adding pressure type insulated tension pole local discharge detection device, by increasing vacuum test tank, has
Effect improves experimental enviroment, and the defect of insulated tension pole is detected in vacuum environment, makes accuracy of detection higher；
(2) the utility model is segmented adding pressure type insulated tension pole local discharge detection device, is provided in vacuum test tank more
A pressure electrode, can carry out insulated tension pole multistage pressurization, and segmentation is detected the fine defects of insulated tension pole so that detection
More fine, defective locations positioning is more accurate；
(3) the utility model segmentation adding pressure type insulated tension pole local discharge detection device is adopted using high-speed data acquisition card
Collection speed can reach 500M/s, can more efficiently collect subtle local discharge signal so that detection is sensitiveer；
In conclusion the utility model segmentation adding pressure type insulated tension pole local discharge detection device design concept is novel, knot
Structure is simple, can be detected to the local fine defects of insulated tension pole, and there is precision height, sensitivity to position by force, to defective locations
Accurate advantage；In addition, this device is easy to operation, highly practical, used convenient for engineering and experiment.
Description of the drawings
Fig. 1 is the structural schematic diagram that the utility model is segmented adding pressure type insulated tension pole local discharge detection device；
Fig. 2 is that the structure of vacuum test tank in the utility model segmentation adding pressure type insulated tension pole local discharge detection device is shown
It is intended to；
Fig. 3 is the signal that the utility model is segmented that adding pressure type insulated tension pole local discharge detection device is divided to two sections of applied voltage tests
Figure；
Fig. 4 is the signal that the utility model is segmented three sections of applied voltage tests of adding pressure type insulated tension pole local discharge detection device point
Figure.
In figure, 1.PC machines, 2. data collecting cards, 3. vacuum pumps, 4. vacuum test tanks, 5. protection impedances, 6. coupled capacitors,
7. detecting impedance, 8. isolating transformers, 9. adjustable transformers, 10. insulated tension poles to be measured, 11. pressure vacuum gauges, 12. annular electros
Pole a, 13. annular electrode conducting rod a, 14. annular electrode b, 15. annular electrode conducting rod b, 16. high-field electrode terminals, 17. absolutely
Edge pull rod card slot A, 18. vacuum extraction valve, 18,19. charge valve, 20. insulated tension pole card slot B, 21. springs, 22. fixing screws,
23. stainless steel base, 24. flanges, 25. ground terminals, 26. tank inner cavities, 27. partial discharge-free test transformers.
Specific implementation mode
The utility model is described in detail with reference to the accompanying drawings and detailed description.
The utility model is segmented adding pressure type insulated tension pole local discharge detection device, and structure is as shown in Figure 1, including multiple
For connect high voltage power supply guarantee test equipment safety isolating transformer 8, it is multiple for connect isolating transformer 8 realize adjust
It is the adjustable transformer 9 of voltage function, multiple for connecting adjustable transformer 9 and insulated tension pole to be measured 10 and the nothing for generating high voltage
Local discharge test transformer 27, multiple be serially connected on circuit are used to prevent power supply noise from flowing into measuring loop and prevent insulation to be measured from drawing
10 shelf depreciation current impulse of bar is diverted to the protection impedance 5, one of power supply for ensureing vacuum environment and placing insulation to be measured
4, one, the vacuum test tank of pull rod 10 itself without shelf depreciation to pulse current provide impedance path coupled capacitor 6 and
One pulse current generated when being used for 10 shelf depreciation of insulated tension pole to be measured is changed into the detection impedance 7 of pulse voltage；Very
Empty test tank 4 connect vacuum pump 3, vacuum pump 3 for give vacuum test tank 4 carry out vacuumize process, vacuum test tank 4 respectively with
The terminal of coupled capacitor 6, detection impedance 7 connect, the also effective grounding of vacuum test tank 4；Coupled capacitor 6 is connected with detection impedance 7,
Detect the terminal effective grounding of impedance 7；Further include having data collecting card 2, and data collecting card 2 is parallel-connected to detection impedance 7
On, the input terminal of data collecting card 2 connects PC machine 1, and data collecting card 2 is for detecting pulse voltage, and PC machine 1 is for adopting data
Data in truck 2 are shown and are stored.
The model Pico6502 of data collecting card 2, acquisition speed can effectively collect part up to 500M/s
Discharge signal, and PC machine 1 is transferred to record.
As shown in Fig. 2, the tank wall of vacuum test tank 4 is double-layer structure, polytetrafluoroethyl-ne is filled in tank inner cavity 26
Alkene gas；It the bottom-open of vacuum test tank 4 and is fixed on stainless steel base 23 by fixing screws 22, flange 24, not
The edge of rust steel base 23 is provided with ground terminal 25, and the center of top of vacuum test tank 4 is provided with high-field electrode terminal 16,
Vacuum tube is also associated on the top of vacuum test tank 4, vacuum tube connects pressure vacuum gauge 11, the tank body side of vacuum test tank 4
It is connected separately with exhaust tube, gas tube, annular electrode conducting rod a13, annular electrode conducting rod b15 on wall, is set on exhaust tube
It is equipped with vacuum extraction valve 18, and vacuum extraction valve 18 is connect with vacuum pump 3, charge valve 19 is provided on gas tube；It is tried in vacuum
The center of top tested in tank 4 is provided with insulated tension pole card slot A17, and high-field electrode terminal 16 is connect with insulated tension pole card slot A17；
It is fixedly installed insulated tension pole card slot B20 in the center of stainless steel base 23, and spring is provided in insulated tension pole card slot B20
For insulated tension pole 10 to be measured to be arranged between 21, insulated tension pole card slot A17 and insulated tension pole card slot B20, in insulated tension pole to be measured
It is in be vertically disposed with annular electrode a12, annular electrode b14 on 10.
For above-mentioned vacuum test tank 4：
Pressure vacuum gauge 11 is installed on the top outer edge position of vacuum test tank 4, and indicating range is -0.1MPa -
0.3MPa；High-field electrode terminal 16 is by nut to being fixed；
Vacuum extraction valve 18 is GM-25 extraction valves, carries vacuum measurement mouth thereon, is installed on and is pushed up apart from vacuum test tank 4
On tank wall at portion 100mm；
Annular electrode conducting rod a13 passes through tank wall, and is fixed respectively with nut inside and outside tank wall and keep good
Good leakproofness, and annular electrode conducting rod a13 is on the tank wall apart from 4 top 315mm of vacuum test tank and true
Empty extraction valve 18 is on a vertical line；
Charge valve 19 is GM-10 charge valves, is installed on the tank wall at 23 120mm of stainless steel base；
Annular electrode conducting rod b15 passes through tank wall, and is fixed respectively with nut inside and outside tank wall and keep good
Good leakproofness, and on the tank wall of stainless 23 315mm of steel base of annular electrode conducting rod b15 mounting distances, and with inflation
Valve 19 is on a vertical line；
The thickness of flange 24 is 18mm, and flange 24 is nested on the outer wall of vacuum test tank 4, and the bottom of flange 24 is provided with 8
It is a for and 23 fixed circular hole of stainless steel base, and stainless steel base 23 is identical with 24 size of flange, compares the every of flange 24
All there are one interior threaded circular holes for a tapping, flange 24 and stainless steel base 23 can be fixed on vacuum test tank with screw
4 bottom；
Insulated tension pole card slot B20 is fixed together by four fixing screws 22 with stainless steel base 23, and mounted on not
The center position of rust steel base 23, is maintained on same vertical line with insulated tension pole card slot A17, is easily installed so to be measured
Insulated tension pole 10.
The model V-i240SV of vacuum pump 3, speed of exhaust 7.2m3/ h, limiting pressure 0.2Pa, vacuum pump 3 and vacuum
The extraction valve 18 of test tank 4 is connected directly, for being vacuumized in vacuum test tank 4.
The model YD-30KVA of partial discharge-free test transformer 27, is divided into low-pressure section and high-pressure section；Low voltage
400V, low-tension current 75A, high tension voltage 100kV, high-tension current 30mA；Its input terminal is connected to the output of adjustable transformer 9
End, a terminal of output end is connected to the ground terminal 25 of vacuum test tank 4 and ensures effective grounding, output end another
The high-field electrode terminal 16 of vacuum test tank 4 is connected to after terminal concatenation low-pass filter.
Protection impedance 5 is RC parallel circuits, protection impedance 5 be serially connected with the high-pressure section of partial discharge-free test transformer 27 with it is true
Between the high-field electrode terminal 16 of empty test tank 4.
The specification of coupled capacitor 6 is 50kV, 5600pf, to ensure that coupled capacitor 6 has certain voltage endurance capability, this practicality
It is novel to use the mode that 6 capacitances are in series and access among circuit, the height of the terminal connection vacuum test tank 4 of coupled capacitor 6
Press electrode terminal 16；Detection impedance 7 is composed in parallel by the capacitance of RX24-50W50 Ω J-types resistance and 30kV, 1000pf.
The model SG-10KVA of isolating transformer 8, input voltage 220V, output voltage 380V；Isolating transformer 8
Input terminal connect 220V AC powers, the output end of isolating transformer 8 connects adjustable transformer 9.
The capacity of adjustable transformer 9 is 30KVA, single-phase 50HZ, input voltage 380V, and the input terminal of adjustable transformer 9 connects
It is connected to the output end of isolating transformer 8, the output end of adjustable transformer 9 is connected to the input terminal of partial discharge-free test transformer 27.
The utility model is segmented adding pressure type insulated tension pole local discharge detection device：
(1) two section of pressurization embodiment：
Under normal circumstances, Partial Discharge Detection is carried out to insulated tension pole 10 to be measured, is first packed into insulated tension pole 10 to be measured
In vacuum test tank 4,10 both ends of insulated tension pole to be measured are pressurizeed and carry out the detection of shelf depreciation；Under rated voltage, this is waited for
Both ends height is presented in the field distribution for surveying insulated tension pole 10, and a kind of intermediate low distribution, especially high-pressure side electric field is higher, if waited for
It surveys 10 internal flaw of insulated tension pole and is located at middle and lower part (close to earthing pole), be then difficult to detect shelf depreciation.
The utility model design two sections of pressuring methods can as shown in figure 3, by high voltage power supply A by protect impedance 5 and
Coupled capacitor 6 is applied in detection impedance 7, and the other end ground connection of detection impedance 7 acquires number by data collecting card 2 in parallel
According to high voltage power supply B is by protecting impedance 5 to be connected on the annular electrode conducting rod a13 on vacuum test tank 4, annular electro
Pole conducting rod a13 is connected with internal insulated tension pole 10 to be measured by annular electrode a12, and one end connection of insulated tension pole 10 to be measured is high
Electrode terminal 16, the other end is pressed to connect ground terminal 25.After the completion of Integrated test facility is built, PC machine 1 is connected to data collecting card 2
Read gathered data.
(2) three sections of pressurization embodiments：
Three sections of pressuring methods are established based on above-mentioned, it is specific as shown in figure 4, high voltage power supply A is by protecting impedance 5 and coupling
Capacitance 6 is applied in detection impedance 7, and detection 7 other end of impedance ground connection passes through 2 gathered data of data collecting card in parallel；High pressure
Power supply B is by protecting impedance 5 to be connected on the annular electrode conducting rod a13 of vacuum test tank 4, annular electrode conducting rod a
13 are connected with internal insulated tension pole to be measured 10 by annular electrode a12；High-field electrode C is located at by protecting impedance 5 to be connected to
On annular electrode conducting rod b15 on vacuum test tank 4, annular electrode conducting rod b15 is tested insulated tension pole 10 with inside and passes through
Annular electrode b14 is connected, a termination high-field electrode terminal 16 of insulated tension pole 10 to be measured, other end ground terminal 25.Whole examination
After the completion of experiment device is built, PC machine 1 is connected to data collecting card 2 and reads gathered data.
When the utility model is divided to two sections of pressurization detections, the centre position of insulated tension pole 10 to be measured is stuck in KF25 clips in advance
As an annular electrode a12, with conducting wire by the annular of annular electrode a12 and vacuum test tank 4 on insulated tension pole 10 to be measured
Electrodes conduct bar a13 is connected, and juxtaposition insulated tension pole 10 to be measured is in closed vacuum test tank 4, with mating fixation spiral shell
Flange and stainless steel base 23 are tightly secured together by nail 22, ensure 4 good seal of vacuum test tank；It was first used before on-test
Vacuum pump 3 carries out vacuumize process to vacuum test tank 4, according to the correct joint test circuits of measuring principle Fig. 1.As shown in figure 3,
Operation adjuster A is slowly increased the voltage of high voltage power supply A with the speed of 200V/s, and high voltage power supply B is not powered at this time.According to experiment
Working specification, if occurred without discharge pulse signal, illustrates that this insulated tension pole 10 to be measured is complete when voltage is added to certain value
It is good；If seeing in the display of PC machine 1 has the appearance of stable discharging pulse signal, illustrate that this insulated tension pole 10 to be measured is defective
In the presence of, remember this voltage value be U0；Under the conditions of defective existing, illustrate to detect defects count below and position defective locations
Method：
After seeing that pulse signal stablizes appearance, the voltage value of high voltage power supply A is slowly decreased to zero, gives high voltage power supply first
B is powered on, and operation pressure regulator B slowly increases the voltage of high voltage power supply B with the speed of 200V/s；When voltage is added to U0When/2 or so
(at this point, the length of the first half that the insulated tension pole to be measured 10 of pressurization only has, therefore pressurize and there was only the former half or so), observe PC
Whether machine 1 has discharge pulse signal appearance；If there is discharge pulse signal occurs, illustrate the BM in insulated tension pole 10 to be measured0It is long
Spend defective presence in range；If occurred without discharge pulse signal, illustrate BM0The insulated tension pole to be measured 10 of section is intact；It connects
It, keeps the U of high voltage power supply B0/ 2 voltages are constant, and operation pressure regulator A slowly increases the electricity of high voltage power supply A with the speed of 200V/s
Pressure, when voltage value reaches U0Slow down pressing speed when left and right, and observes whether PC machine 1 has discharge pulse signal appearance；If there is
Discharge pulse signal occurs, and illustrates the AM in insulated tension pole 10 to be measured0Also defective presence in this length range；Equally, such as
Fruit does not have discharge pulse signal appearance, illustrates that the insulated tension pole to be measured 10 in this length range is intact.In this way, with being divided to two sections to add
The mode of pressure detected position existing for the defects count and defect of insulated tension pole 10 to be measured.
If being divided to two sections of detections, the quantity of defect and positioning are not accurate enough, can continue to increase to insulated tension pole 10 to be measured
Annular electrode is detected by the way of point three sections of pressurizations.With being divided to the preparation of two sections of pressurizations similar, in advance with two
KF25 clips, which are stuck at the trisection point position of insulated tension pole 10 to be measured, is used as two annular electrodes, will be to be measured exhausted with conducting wire
Annular electrode a12, annular electrode a14 on edge pull rod 10 respectively with the annular electrode conducting rod a13 of vacuum test tank 4, annular
Electrodes conduct bar b15 is correspondingly connected with, and insulated tension pole 10 to be measured is placed in closed vacuum test tank 4, by flange 24
It is fixed with stainless steel base 23 and ensures 4 good seal of vacuum test tank.First used vacuum pump 3 to vacuum test tank 4 before on-test
Vacuumize process is carried out, according to the correct joint test circuits of measuring principle Fig. 1.As shown in figure 4, operation adjuster A is with 200V/s
Speed slowly increase the voltage of high voltage power supply A, high voltage power supply B, high voltage power supply C are not powered at this time.According to test operation specification,
When voltage is added to certain value, if occurred without discharge pulse signal, illustrate that this insulated tension pole 10 to be measured is intact；If in PC
Seeing in machine 1 has the appearance of stable discharging pulse signal, illustrates this 10 defective presence of insulated tension pole to be measured, remembers that this voltage value is
U0；Equally, under the conditions of defective existing, it is seen that pulse signal slowly drops the voltage value of high voltage power supply A after stablizing appearance
It is as low as zero, is powered on to high voltage power supply C, operation pressure regulator C slowly increases the voltage of high voltage power supply C with the speed of 200V/s；Work as electricity
Pressure is added to U0When/3 or so (insulated tension pole to be measured 10 of pressurization only have before 1/3 length, therefore only the former 1/3 left that pressurize
It is right), whether observation PC machine 1 has discharge pulse signal appearance.If there is discharge pulse signal occurs, illustrate in insulated tension pole to be measured
10 BM2Defective presence in length range；If occurred without discharge pulse signal, illustrate to be measured in this length range
Insulated tension pole 10 is intact.Then, the U of high voltage power supply C is kept0/ 3 voltages are constant, and high-voltage electricity is slowly increased with the speed of 200V/s
The voltage of source B, when voltage value reaches 2U0Slow down pressing speed when/3 or so, and observes whether PC machine 1 has discharge pulse signal to go out
It is existing.If there is discharge pulse signal occurs, illustrate the M in insulated tension pole 10 to be measured1M2Defective presence in length range；If
There is no discharge pulse signal appearance, illustrates that the insulated tension pole to be measured 10 in this length range is intact.Finally, high voltage power supply is kept
The voltage value of B and high voltage power supply C are constant, and operation pressure regulator A slowly increases the voltage of high voltage power supply A with the speed of 200V/s, when
Voltage value reaches U0Slow down pressing speed when left and right, and observe whether PC machine 1 has discharge pulse signal appearance, if there is the arteries and veins that discharges
Signal appearance is rushed, illustrates the AM in insulated tension pole 10 to be measured1Defective presence in length range；Equally, if not discharging arteries and veins
Signal appearance is rushed, illustrates that the insulated tension pole to be measured 10 in this length range is intact.In this way, being detected with a point mode for three sections of pressurizations
The defects count and defective locations of insulated tension pole 10 to be measured, the precision highers of two sections of detections of score.
The quantity that annular electrode can be continued to increase to insulated tension pole 10 to be measured using above-mentioned pressurization detection mode, using points four
Section, five sections of isopressor modes carry out defects detection to test item paragraph by paragraph, more accurately determine quantity and the position of defect.On
The method stated can also be used to detect with the presence or absence of local fine defects in insulated tension pole 10 to be measured, with reference to Fig. 4 to divide three sections
The detection mode of pressurization briefly gives to illustrate：The voltage value for slowly increasing high voltage power supply A first, when being pressurized to test operation specification
Defined voltage U1When, if not occurring discharge pulse signal in PC machine 1 at this time, traditional detection method will judge insulation to be measured
The good zero defect of 10 insulation performance of pull rod exists, and the part such as certain micro-cracks, micro- air gap in insulated tension pole 10 to be measured is subtle to be lacked
It is trapped under this voltage that shelf depreciation does not occur, these fine defects would not be detected.To prevent missing inspection locally subtle
Defect falls the voltage of power supply A at this time, is changed to the voltage value of slowly boost source C.When being increased to U1/2-2U1/ 3 (this pressurized segment
Only the 1/3 of pull rod overall length) when, it has been 1.5-2 times when power supply A is powered on that the voltage of this section of insulated tension pole 10 to be measured, which undertakes value,
Insulated tension pole 10 to be measured exists if any fine defects is more easy to that local pulse electric discharge occurs under this voltage；If still discharge off signal goes out
It is existing, illustrate that this section of 10 insulation performance of insulated tension pole to be measured is good.Similarly, M is detected1M2Duan Shi keeps the voltage value of power supply C constant,
The voltage value of high voltage power supply B is slowly increased to 2U1/3-1.3U1；Detect AM1Duan Shi keeps the voltage value of high voltage power supply B, C not
Become, slowly the voltage value of raising high voltage power supply A to 1.3U1-2U1, seen whether discharge pulse signal appearance.If there is electric discharge arteries and veins
Signal appearance is rushed, then there are fine defects for corresponding pressurized segment, if discharge off pulse signal occurs, insulated tension pole 10 to be measured is complete
It is good.In this way, can further detect in insulated tension pole 10 to be measured with the presence or absence of local fine defects.
Claims (9)
1. being segmented adding pressure type insulated tension pole local discharge detection device, which is characterized in that including multiple for connecting high voltage power supply
Isolating transformer (8), multiple adjustable transformers (9) for connecting isolating transformer (8), multiple for connecting pressure regulation transformation
Device (9) and insulated tension pole to be measured (10) simultaneously generate the partial discharge-free test transformer (27) of high voltage, multiple are serially connected on circuit
Protect impedance (5), a vacuum test tank (4), a coupled capacitor (6) and a detection impedance (7)；The vacuum test
Tank (4) connects vacuum pump (3), and the vacuum test tank (4) connect with the terminal of coupled capacitor (6), detection impedance (7) respectively,
The vacuum test tank (4) also effective grounding；The coupled capacitor (6) is connected with detection impedance (7), the detection impedance (7)
Terminal effective grounding；The partial discharge-free test transformer (27) is divided into low-pressure section and high-pressure section；
Further include having the data collecting card (2) being parallel in detection impedance (7), the input terminal connection of the data collecting card (2)
PC machine (1).
2. segmentation adding pressure type insulated tension pole local discharge detection device according to claim 1, which is characterized in that it is described every
Model SG-10KVA from transformer (8), input terminal connect 220V AC powers, and output end connects the pressure regulation transformation
Device (9)；
The capacity of the adjustable transformer (9) is 30KVA, and output end connects the input terminal of partial discharge-free test transformer (27).
3. segmentation adding pressure type insulated tension pole local discharge detection device according to claim 1, which is characterized in that the inspection
Impedance (7) is surveyed to be composed in parallel by RX24-50W50 Ω J-types resistance and the capacitance of 30kV, 1000pf.
4. segmentation adding pressure type insulated tension pole local discharge detection device according to claim 1, which is characterized in that the number
According to the model Pico6502 of capture card (2).
5. segmentation adding pressure type insulated tension pole local discharge detection device according to claim 1, which is characterized in that described true
The tank wall of empty test tank (4) is double-layer structure, and polytetrafluoroethylene (PTFE) gas is filled in tank inner cavity (26)；
The bottom-open of the vacuum test tank (4) and stainless steel base is fixed on by fixing screws (22), flange (24)
(23) on, and the edge of the stainless steel base (23) is provided with ground terminal (25), the top of the vacuum test tank (4)
Portion center is provided with high-field electrode terminal (16), and vacuum tube is also associated on the top of the vacuum test tank (4), and vacuum tube connects
Pressure vacuum gauge (11) is connect, exhaust tube, gas tube, annular electro are connected separately on the tank wall of the vacuum test tank (4)
Pole conducting rod a (13), annular electrode conducting rod b (15) are provided with vacuum extraction valve (18) on the exhaust tube, and described true
Empty extraction valve (18) connect with vacuum pump (3), and charge valve (19) is provided on the gas tube；
Center of top in the vacuum test tank (4) is provided with insulated tension pole card slot A (17), and high-field electrode terminal (16)
It is connect with insulated tension pole card slot A (17)；It is fixedly installed insulated tension pole card slot B in the center of the stainless steel base (23)
(20), it and in the insulated tension pole card slot B (20) is provided with spring (21), the insulated tension pole card slot A (17) is drawn with insulation
It is in be vertically disposed with annular electro on the insulated tension pole (10) for insulated tension pole to be measured (10) to be arranged between bar card slot B (20)
Pole a (12), annular electrode b (14).
6. being segmented adding pressure type insulated tension pole local discharge detection device according to claim 1 or 5, which is characterized in that institute
State the model V-i240SV of vacuum pump (3).
7. segmentation adding pressure type insulated tension pole local discharge detection device according to claim 5, which is characterized in that described true
Empty extraction valve (18) is GM-25 extraction valves, carries vacuum measurement mouth thereon, is installed on apart from 100mm at the top of vacuum test tank (4)
On the tank wall at place；
The annular electrode conducting rod a (13) passes through tank wall, and is fixed respectively with nut inside and outside tank wall, the ring
Shape electrodes conduct bar a (13) is mounted on the tank wall apart from 315mm at the top of vacuum test tank (4), and and vacuum extraction valve
(18) on a vertical line.
8. segmentation adding pressure type insulated tension pole local discharge detection device according to claim 5, which is characterized in that described to fill
Air valve (19) is GM-10 charge valves, is installed on the tank wall at stainless steel base (23) 120mm；
The annular electrode conducting rod b (15) passes through tank wall, and is fixed respectively with nut inside and outside tank wall, the ring
On the tank wall of shape electrodes conduct bar b (15) mounting distance stainless steel base (23) 315mm, and with charge valve (19) at one
On vertical line.
9. segmentation adding pressure type insulated tension pole local discharge detection device according to claim 5, which is characterized in that the guarantor
It is RC parallel circuits to protect impedance (5), the protection impedance (5) be serially connected with the high-pressure section of partial discharge-free test transformer (27) with it is true
Between the high-field electrode terminal (16) of empty test tank (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721424643.4U CN207866958U (en) | 2017-10-31 | 2017-10-31 | It is segmented adding pressure type insulated tension pole local discharge detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721424643.4U CN207866958U (en) | 2017-10-31 | 2017-10-31 | It is segmented adding pressure type insulated tension pole local discharge detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207866958U true CN207866958U (en) | 2018-09-14 |
Family
ID=63474446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721424643.4U Active CN207866958U (en) | 2017-10-31 | 2017-10-31 | It is segmented adding pressure type insulated tension pole local discharge detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207866958U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110146790A (en) * | 2019-05-06 | 2019-08-20 | 西安工程大学 | A kind of special-shaped wave detection device and detection method of shelf depreciation |
| CN111006791A (en) * | 2019-12-26 | 2020-04-14 | 北京利德华福电气技术有限公司 | Temperature measuring device of rectifier transformer |
| CN112505516A (en) * | 2020-09-30 | 2021-03-16 | 江苏省如高高压电器有限公司 | Insulation part electric appliance performance test system for high-voltage electric appliance |
| CN114113946A (en) * | 2021-11-26 | 2022-03-01 | 西安西电高压开关操动机构有限责任公司 | Sectional voltage-withstanding test equipment |
-
2017
- 2017-10-31 CN CN201721424643.4U patent/CN207866958U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110146790A (en) * | 2019-05-06 | 2019-08-20 | 西安工程大学 | A kind of special-shaped wave detection device and detection method of shelf depreciation |
| CN110146790B (en) * | 2019-05-06 | 2021-01-26 | 西安工程大学 | Special-shaped wave detection device and method for partial discharge |
| CN111006791A (en) * | 2019-12-26 | 2020-04-14 | 北京利德华福电气技术有限公司 | Temperature measuring device of rectifier transformer |
| CN112505516A (en) * | 2020-09-30 | 2021-03-16 | 江苏省如高高压电器有限公司 | Insulation part electric appliance performance test system for high-voltage electric appliance |
| CN112505516B (en) * | 2020-09-30 | 2024-04-30 | 江苏省如高高压电器有限公司 | Electrical appliance performance test system for insulating part for high-voltage electrical appliance |
| CN114113946A (en) * | 2021-11-26 | 2022-03-01 | 西安西电高压开关操动机构有限责任公司 | Sectional voltage-withstanding test equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207866958U (en) | It is segmented adding pressure type insulated tension pole local discharge detection device | |
| CN105974290B (en) | A kind of dry-type air-core reactor turn-to-turn insulation performance detecting system and method | |
| CN206671472U (en) | High-tension cable local discharge detection device | |
| CN101639502B (en) | System for automatically measuring charge distribution on surface of solid medium | |
| CN103675623B (en) | GIS partial discharge detection method and system under a kind of surge voltage | |
| CN103267933B (en) | The method of shelf depreciation in measuring transformer induced voltage test device | |
| CN106501696B (en) | A kind of 500kV high-voltage shunt reactor scene local discharge test system and method | |
| CN107632241A (en) | A kind of apparatus and method for testing paper oil insulation partial discharge characteristic | |
| CN105259489B (en) | Extra-high voltage neutral reactor scene induced over voltage withstand test system and method | |
| CN105203930A (en) | Partial discharge test platform and method for high-voltage switch cabinet | |
| CN106199360A (en) | A kind of GIS disc insulator surface defect model | |
| CN103336186A (en) | Method for testing transformer equipment without disassembling lead | |
| CN103149506A (en) | Power transformer interturn insulation surface bubble partial discharge simulation experimental platform and experimental method | |
| CN203191508U (en) | GIS partial-discharge detection test platform based on transient-earthing radio waves | |
| CN110108923A (en) | The test method of high-voltage connection measurement Zinc-Oxide Arrester direct current leakage is not removed | |
| CN105866644A (en) | System for automatically collecting transformer oil paper insulation return voltage and testing method | |
| CN107748295A (en) | A kind of device and method of GIS disc insulators dielectric loss test | |
| CN101034125B (en) | Resonant experimental device of dry-type power transformer partial discharge detection | |
| CN204228795U (en) | A kind of compact broadband capacitive divider measured for square-wave voltage | |
| WO2021012639A1 (en) | Insulation diagnosis and positioning method for insulated tube-type bus bar | |
| CN203249991U (en) | Device applied to transformer induction voltage test | |
| CN201955383U (en) | Measuring device for directly measuring voltage difference between two high-voltage ends | |
| CN206002564U (en) | A kind of dielectric loss and insulation resistance test conversion equipment and pilot system | |
| CN204925324U (en) | A partial discharge test platform for high tension switchgear | |
| Li et al. | Partial discharge monitoring system for PD characteristics of typical defects in GIS using UHF method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |