CN104020400A - Subsection alternating current voltage withstanding test method for 750kV insulation tool and instrument - Google Patents
Subsection alternating current voltage withstanding test method for 750kV insulation tool and instrument Download PDFInfo
- Publication number
- CN104020400A CN104020400A CN201410260668.XA CN201410260668A CN104020400A CN 104020400 A CN104020400 A CN 104020400A CN 201410260668 A CN201410260668 A CN 201410260668A CN 104020400 A CN104020400 A CN 104020400A
- Authority
- CN
- China
- Prior art keywords
- clamping plate
- plate electrode
- groups
- insulation
- horizontally
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Testing Relating To Insulation (AREA)
Abstract
A subsection alternating current voltage withstanding test method for a 750kV insulation tool and instrument comprises the steps that nine insulation lifting supports, 14 sets of clamping plate electrodes and three sets of grounding devices are configured, and meanwhile a 500kV test transformer, a cylinder electrode and an insulation ladder stool are configured; the insulation lifting supports are erected and arranged on the ground in a 3*3 mode; the clamping plate electrodes are arranged on the insulation lifting supports to form a rectangular frame; the height between the top ends of the insulation lifting supports and the ground is adjusted to be 2.3 m, and the sum of two sets of the clamping plate electrodes of the front transverse row is adjusted to be 4.8 m; a plurality of bar-shaped tested products are placed on the clamping plate electrodes in order; high-voltage voltage-dividing leads of the 500kV test transformer are connected with the cylinder electrode, the two high-voltage voltage-dividing leads are respectively led out of the cylinder electrode to be connected with the middle points of the clamping plate electrodes of the front transverse row, and the tested products of 4.8 m are divided into four equal sections of 1.2 m; voltages are increased to be 234 kV, and voltage increase time is five minutes. The 500kV test transformer is applied, the tested insulation tool and instrument is divided into even sections of 1.2 m under the condition of meeting the test length of 4.7 m under full voltages, and a subsection test is carried out.
Description
Technical field
The present invention relates to a kind of method of AC voltage withstand test of the insulating tool of ehv power transmission equipment being carried out for electric system, specifically a kind of 750kV insulating tool segmentation alternating current withstand voltage test method.
Background technology
Development along with super (spy) high-voltage fence construction, the electric pressure of power transmission and transforming equipment and equipment working condition have had significant lifting, than before, novel intelligent electrical network is more advanced, science, environmental protection more more, also more energy-conservation, in order to adapt to the demand of current electrical network, requirement for power transmission and transforming equipment is also more and more higher, equally, along with the progressively lifting of electric pressure, also more and more higher to the requirement of the dielectric level of insulating tool in work.Maintenance to 750kV power transmission and transforming equipment, just requires all kinds of insulating tool performances to propose higher standard at present, could meet work requirements.
Insulating tool be in electric power safety production work most important one accept equipment, its dielectric strength is directly connected to operator's personal safety.The method that electrical test worker carries out traditional voltage levels insulating tool alternating current voltage withstand testing is the pattern of taking four people to coordinate, in high-potting hall, specific workplace, by a people, be responsible for transmitting and comprise the insulating tools such as electroscope, link rod, ground rod and control lever, other two people form sling colligation series connection in the both sides of insulating tool with rope, a remaining people starts driving and is responsible for lift-off, banding insulation Work tool in the safe range of estimating, consider the deadweight of Work tool and the compactedness of sling, once at most can colligation 20.The drawback of doing is like this mainly: because of staff's difference, the sling degree of tightness of colligation differs, the spacing of Work tool is difficult to be consistent, and has very large potential safety hazard, to staff, has increased psychological burden; And what current a lot of electric power enterprise was all used is the testing transformer of 500kV, cannot meet the full voltage AC voltage withstand test of 750kV insulating tool.So, develop a kind of method that can carry out 750kV insulating tool alternating current voltage withstand testing, be the important research direction of this area.According to the knowledge of the applicant up to the present, also do not have the facility of a set of complete standard moulding and method can carry out 750kV insulating tool segmentation AC voltage withstand test.
Summary of the invention
Order of the present invention is to provide a kind of 750kV insulating tool segmentation alternating current withstand voltage test method.This test method adopts 500kV testing transformer to carry out 750kV insulating tool segmentation AC voltage withstand test, this test method can be in the situation that starting 500kV testing transformer, the segmentation AC voltage withstand test that completes 750kV insulating tool of rapid safety standard, thus reach the test objective that completes fast voltage levels insulating tool in enormous quantities.
For achieving the above object, the technical scheme that the present invention proposes is: a kind of 750kV insulating tool segmentation alternating current withstand voltage test method, is characterized in that comprising the steps:
A. configure nine eradication edge liftable supports, 14 groups of clamping plate electrodes and three cover earthing device, wherein the length of four groups of clamping plate electrodes is 2.4 meters, all the other ten groups of clamping plate electrode lengths identical (quantity according to tested insulating tool is selected 1.6～2.4 meters); Configure 500kV testing transformer, cylinder electrode and insulation step stool simultaneously;
B. nine eradication edge liftable supports are arranged on to ground and are that 3 * 3 rows arrange by horizontally-arranged * tandem; Be positioned at peripheral eight can insulated lift support top fixedly mount eight groups of clamping plate electrodes, at the top of middle tandem insulation liftable support, fixedly mount two groups of clamping plate electrodes, length is that the clamping plate electrode of 2.4 meters is arranged on front horizontally-arranged and rear horizontally-arranged; First group of front horizontally-arranged, with the point midway of first group of clamping plate electrode of rear horizontally-arranged, two groups of clamping plate electrodes are installed, second group of front horizontally-arranged, with the point midway of second group of clamping plate electrode of rear horizontally-arranged, two groups of clamping plate electrodes are installed; Insulation liftable support and clamping plate electrode form rectangular frame;
C. regulate the Height Adjustable insulation strut of nine eradication edge liftable supports, making top is 2.3m apart from floor level; Before adjusting, two groups of clamping plate electrodes of horizontally-arranged are in the position of insulation liftable support, making two groups of clamping plate electrode length sums is 4.8m, the spacing that is the front horizontally-arranged outside two eradication edge liftable supports of rectangular frame is 4.8m, reaches the test length 4.7m that meets 750kV insulating tool; In like manner, after adjusting, two groups of clamping plate electrodes of horizontally-arranged are in the position of insulation liftable support, and making two groups of clamping plate electrode length sums is 4.8m;
D. insulation step stool is positioned over to the periphery of the test facilities of two groups of clamping plate electrodes and Height Adjustable insulation strut composition; Open the bolt of each tandem clamping plate electrode one end, by the sawtooth grooves that is placed on according to the order of sequence clamping plate electrode of many bar dry type products to be tested, then with bolt, train wheel bridge and lower plate are connected and fixed;
E. three cover earthing device are arranged on respectively to three liftable supports of front horizontally-arranged, earthing device one end is connected with supporting plate, the other end is connected with the chassis of this supporting plate place liftable support; Because clamping plate electrode is arranged on liftable support by the supporting plate of metal material, earthing device is connected with supporting plate, clamping plate electrode is by supporting board earthing device by clamping plate electrode, and the inner side of clamping plate electrode is copper sheet parcel, and after therefore connecting, nature is by the insulating tool short circuit ground connection of segmentation;
F. by the high-voltage connection connecting cylinder electrode of 500kV testing transformer, from cylinder electrode two ends, draw respectively a high pressure and divide voltage lead wires, divide voltage lead wires to be connected to first group of clamping plate electrode of installing with the point midway of first group of clamping plate electrode of rear horizontally-arranged of front horizontally-arranged a high pressure, divide voltage lead wires at second group of two groups of clamping plate electrode installing with the point midway of second group of clamping plate electrode of rear horizontally-arranged of front horizontally-arranged another root high pressure; In like manner, because the inner side of clamping plate electrode is copper sheet parcel, after therefore connecting, nature is by the whole short circuits of the insulating tool of this side; Thereby the bar dry type product to be tested of 4.8m is divided into the quartern of 1.2m;
G. confirm that wiring is correct, field staff is cleared out a gathering place; High-voltage connection is connected with 500kV testing transformer output line, bar dry type product to be tested is pressurizeed, boost to 234kV(segmentation voltage and calculate 780 * 1.2 ÷ 4=234kV), 5 minutes pressing times;
H. timing at the uniform velocity step-down after 5 minutes, cuts off the electricity supply after being depressurized to 0 display position, enters test facilities and checks test specimen, if test specimen be take without puncturing, being certified products without flashover, without heating under the trial voltage of regulation and tolerance time.
Insulating tool is that bar dry type product to be tested comprises insulating bar, electroscope, link rod.
What realize the inventive method use is 750kV insulating tool segmentation AC voltage withstand test facility, the technical scheme of these test facilities is: a kind of 750kV insulating tool segmentation AC voltage withstand test facility, is characterized in that: this facility comprises nine liftable supports, 14 groups of clamping plate electrodes, three cover earthing device and cylinder electrodes; Nine liftable supports are arranged on ground and are that 3 * 3 rows arrange by horizontally-arranged * tandem; The top that is positioned at eight peripheral liftable supports fixedly mounts eight groups of clamping plate electrodes, the top of middle tandem liftable support fixedly mounts two groups of clamping plate electrodes, first group of front horizontally-arranged installed two groups of clamping plate electrodes with the point midway of first group of clamping plate electrode of rear horizontally-arranged by the first mid point supporting plate, and second group of front horizontally-arranged installed two groups of clamping plate electrodes with the point midway of second group of clamping plate electrode of rear horizontally-arranged by the second mid point supporting plate; Liftable support comprises base, is arranged on the Height Adjustable insulation strut on base, and Height Adjustable insulation strut upper end is provided with supporting plate; Three liftable supports of front horizontally-arranged are respectively installed a set of earthing device, and earthing device one end is connected with supporting plate, the other end is connected with the chassis of this supporting plate place liftable support; Cylinder electrode two ends are respectively drawn a high pressure and are divided voltage lead wires, the one end that high pressure divides voltage lead wires to be connected to two groups of clamping plate electrodes that connect by the first mid point supporting plate, another root high pressure divides voltage lead wires to be connected to one end of two groups of clamping plate electrodes that connect by the second mid point supporting plate; The length of each front horizontally-arranged, rear horizontally-arranged clamping plate electrode is 2.4 meters.
Three cover earthing device are the earthing device that can meet 750kV insulating tool ac voltage withstanding.Because liftable support, clamping plate electrode etc. also can be used for the AC voltage withstand test of 220kV and 330kV insulating tool, so liftable support specifically Height Adjustable insulation strut can be adjusted to the test of corresponding 2.3 meters, 2.1 meters, 2.8 meters to ground level according to the test demand of tri-kinds of electric pressures of 750kV, 220kV and 330kV is corresponding, while testing, be adjusted to the height that meets testing requirements, regulate liftable support spacing and tested insulating tool length adaptive, thereby reached the object of test.
Clamping plate electrode comprises train wheel bridge and lower plate, the lower surface of train wheel bridge and the upper surface of lower plate are provided with the sawtooth that quantity is equal to, train wheel bridge is connected by metal bolts with lower plate two ends, train wheel bridge sawtooth docks with the crown of lower plate sawtooth, the lower surface of train wheel bridge and the upper surface of lower plate are all provided with the copper sheet electrode with sawtooth laminating, and train wheel bridge tooth paddy and lower plate tooth paddy form rhombus electrode hole.
These test facilities also comprise two cover insulation step stools, and insulation step stool is made by unsaturated polyester, while carrying out ac voltage withstanding, can select ladder level according to staff's height and Work tool height over the ground.During test, be positioned over the both sides of device, for staff, trample, be convenient to the tested insulating tool of bar dry type to be placed into clamping plate electrode etc.
Clamping plate electrode is made by unsaturated polyester resin, because the copper sheet electrode being inlaid with sawtooth laminating is all installed at the serrate position of the upper surface of the lower surface at train wheel bridge and lower plate, in carrying out the process of AC voltage withstand test, insulating tool two ends are placed on rhombus electrode hole, because be inlaid with copper sheet, so can save the operation lack of standardization of carrying out short circuit with bare copper wire, insulating tool is used the two ends of metal bolts fixed electorde again after placing.
Cylinder electrode hangs in the air and is comprised of all-metal, and it is used that this metal electrode is only limited to while carrying out 750kV insulating tool alternating current voltage withstand testing dividing potential drop.
Earthing device is the Special grounding wire that two ends dispose inserted sleeve, when being carried out to segmentation AC voltage withstand test, 750kV insulating tool need to overlap earthing device with three, during work, on three liftable supports of front horizontally-arranged, connect, can meet the demand of 750kV insulating tool segmentation AC voltage withstand test.
Height Adjustable insulation strut comprises that lower beam, upper boom, insulation slotting ring are located at lower beam exterior upper portion with insulation plug, insulation slotting ring, and upper boom is plugged in lower beam, and insulation plug is plugged in insulation slotting ring, and lower beam is fixedly connected with upper boom.Height Adjustable insulation strut is made by unsaturated polyester, and Height Adjustable insulation strut and clamping plate electrode have formed main body insulated frame structure of the present invention.
These test facilities are suitable for the AC voltage withstand test of 750kV bar dry type insulating tool.These test facilities and the present invention submit patented claim on the same day in addition to.The present invention has realized in the situation that possessing 500kV testing transformer, under meeting full voltage, in the test length of 4.7 meters, tested dry type insulation multiplexer is divided into uniform 1.2 meters and carries out Sectional Test, and then complete the segmentation AC voltage withstand test of 750kV insulating tool.Major advantage is:
1. by vertical distribution, made the placement of insulating tool into horizontal distribution, when work, can regulate it to ground level by operation liftable support, the mode that nine liftable supports and the direct short circuit of clamping plate electrode of installing on it have been removed artificial winding from, device good electric property, practical, safety, reliable;
2. having realized use 500kV testing transformer coordinates this device to complete 750kV insulating tool segmentation AC voltage withstand test;
3. in the busy period of the inspection of power industry spring, autumn inspection, realize the problem of voltage levels insulating tool being carried out to test in enormous quantities, slowed down staff's labour intensity, greatly improved work efficiency.
Accompanying drawing explanation
Fig. 1 is structural relation schematic diagram of the present invention,
Fig. 2 is the structural relation schematic diagram of the present invention of another angle,
Fig. 3 is the structural representation of clamping plate electrode,
Fig. 4 is the A portion enlarged drawing of Fig. 3,
Fig. 5 is the structural representation of supporting plate,
Fig. 6 is the schematic diagram of earthing device,
Fig. 7 the present invention carries out the schematic diagram of 750kV test to insulating tool,
Fig. 8 is the structural representation of insulation step stool.
In figure: 1-liftable support, 101-lower beam, 102-upper boom, 103-hole, 104-middle tandem liftable support, 2-earthing device, 201-ground wire, 202-inserted sleeve, 3-chassis, 4-insulation slotting ring, 5-insulation plug, 6-clamping plate electrode, 601-train wheel bridge, 602-lower plate, 603-crown, 604-rhombus electrode hole, 605-copper sheet electrode, 606-bolt, first group of clamping plate electrode of 607-front horizontally-arranged, second group of clamping plate electrode of 608-front horizontally-arranged, 609-the ten one group of clamping plate electrode, 610-the ten two group of clamping plate electrode, 611-the ten three group of clamping plate electrode, 612-the ten four group of clamping plate electrode, 7-supporting plate, 701-clamping plate electrode mounting hole, 702-supporting plate earth jack, 8-high pressure divides voltage lead wires, 9-cylinder electrode, 10-high-voltage connection, 11-insulated sling, 12-tested insulation product, the 13-the first mid point supporting plate, the 14-the second mid point supporting plate, 15-insulation step stool, the spacing of edge liftable support is thoroughly done away with in L-front horizontally-arranged outside two.
Embodiment
Facility embodiment is as shown in Figures 1 and 2: a kind of 750kV insulating tool segmentation AC voltage withstand test facility, and this facility comprises 1,14 groups of clamping plate electrodes of nine liftable supports 6, three cover earthing device 2 and cylinder electrodes 9, nine liftable supports 1 are arranged on ground and are that 3 * 3 rows arrange by horizontally-arranged * tandem, the top that is positioned at eight peripheral liftable supports 1 fixedly mounts eight groups of clamping plate electrodes 6, middle tandem liftable support 104(be take the orientation shown in Fig. 1 as benchmark) top fixedly mount two groups of clamping plate electrodes, first group of clamping plate electrode of front horizontally-arranged 607 installed two groups of clamping plate electrodes with the point midway of first group of clamping plate electrode of rear horizontally-arranged by the first mid point supporting plate 13, i.e. the 11 group of clamping plate electrode 609 and 12 groups of clamping plate electrodes 610, second group of clamping plate electrode of front horizontally-arranged 608 installed two groups of clamping plate electrodes with the point midway of second group of clamping plate electrode of rear horizontally-arranged by the second mid point supporting plate 14, i.e. the 13 group of clamping plate electrode 611 and 14 groups of clamping plate electrodes 612, liftable support 1 comprises base 3, is arranged on the Height Adjustable insulation strut on base 3, and Height Adjustable insulation strut upper end is provided with supporting plate 7, three liftable supports 1 of front horizontally-arranged are respectively installed a set of earthing device 2, and earthing device 2 one end are connected with supporting plate 7, the other end is connected with the chassis 3 of this supporting plate place liftable support, cylinder electrode 9 two ends are respectively drawn a high pressure and are divided voltage lead wires 8, an outer end that high pressure divides voltage lead wires to be connected to the 11 groups of clamping plate electrodes 609 in ground that connect by the first mid point supporting plate 13, another root high pressure divides voltage lead wires to be connected to the outer end of the 13 group of clamping plate electrode connecting by the second mid point supporting plate 14.
The length of each front horizontally-arranged and rear horizontally-arranged clamping plate electrode is 2.4 meters, and first group of clamping plate electrode of front horizontally-arranged 607 is 2.4 meters with first group of clamping plate electrode of rear horizontally-arranged, second group of clamping plate electrode of front horizontally-arranged 608 with the length of second group of clamping plate electrode of rear horizontally-arranged.The length of other clamping plate electrodes, the length of ten groups of longitudinal clamping plate electrodes is 1.6 meters or 2.4 meters, according to the quantity choice for use of being tested insulating tool.Three cover earthing device 2 are the earthing device that can meet 750kV insulating tool ac voltage withstanding.
Referring to Fig. 3 and Fig. 4: clamping plate electrode 6 is strip, clamping plate electrode 6 comprises train wheel bridge 601 and lower plate 602, the upper surface of the lower surface of train wheel bridge 601 and lower plate 602 is provided with the sawtooth that quantity is equal to, train wheel bridge 601 is connected by bolt 606 with lower plate 602 two ends, crown 603 docking of upper and lower clamping plate sawtooth, the upper surface of the lower surface of train wheel bridge 601 and lower plate 602 is all provided with the copper sheet electrode 605 with sawtooth laminating, and the tooth paddy of upper and lower clamping plate forms rhombus electrode hole 604.Referring to Fig. 7: rhombus electrode hole 604 is for clamping tested insulating tool 10, and energising causes conducting, and does not need again the tested insulating tool of short circuit, once just automatic short circuit of clamping.During test, tested insulating tool is arranged on according to the order of sequence one by one to the rhombus electrode hole 604 of ten groups of longitudinal clamping plate electrodes.
Referring to Fig. 1, Fig. 2 and Fig. 7: Height Adjustable insulation strut comprises lower beam 101, upper boom 102, insulation slotting ring 4 and insulation plug 5, insulation slotting ring 4 is located at lower beam 101 exterior upper portion, insulation slotting ring 4 is provided with connecting hole, upper boom 102 has been dug the hole 103 of differing heights over the ground, upper boom 102 is plugged in lower beam 101, insulation plug 5 is plugged in connecting hole and hole 103, and lower beam 101 is fixedly connected with upper boom 102.
Can Height Adjustable insulation strut be adjusted to the test of corresponding 2.3 meters, 2.1 meters, 2.8 meters to ground level according to the test demand of 750kV, 220kV, tri-kinds of electric pressures of 330kV, flexible upper boom 102 while carrying out the AC voltage withstand test of different electric pressures, after being adjusted to required height, connecting hole is aimed at hole 103, insert insulation plug 5, lower beam 101 and upper boom 102 are fixed.14 groups of clamping plate electrodes 6 are all horizontal positioned and identical with the height apart from ground.
As shown in Figure 5: supporting plate 7 is provided with clamping plate electrode mounting hole 701 and supporting plate earth jack 702; Clamping plate electrode mounting hole 701, for mounting clamp plate electrode 6, is about to bolt 606 and is installed on clamping plate electrode mounting hole 701, and clamping plate electrode 6 is fixed on to supporting plate 7, and supporting plate earth jack 702 is for the earthing device 2 of pegging graft.Referring to Fig. 1 and Fig. 2: chassis 3 is provided with chassis earth jack, for the earthing device 2 of pegging graft.The first mid point supporting plate 13, the second mid point supporting plate 14, supporting plate 7 are conducting metal material with chassis 3.
As shown in Figure 6: earthing device 2 comprises ground wire 201, ground wire 201 two ends dispose inserted sleeve 202; Referring to Fig. 7: when 750kV insulating tool is carried out to AC voltage withstand test, at three liftable supports 1 of front horizontally-arranged, a set of earthing device 2 is respectively installed, an inserted sleeve 202 is plugged in supporting plate earth jack 702, and another inserted sleeve 202 is plugged in chassis earth jack.
Liftable support 1 is the insulation cylinder structure consisting of unsaturated polyester; As the physical support of 750kV and 220kV and 330kV insulating tool alternating current voltage withstand testing, each organizes liftable support is independently, during test, according to test demand spacing, puts.Height Adjustable insulation strut and clamping plate electrode have formed main body insulated frame structure of the present invention.
Referring to Fig. 8: these test facilities also comprise the two cover insulation step stools of being made by unsaturated polyester, Fig. 8 is the structural representation of a set of insulation step stool 15, during test, be positioned over the arranged on left and right sides of main body insulated frame structure, for staff, trample, be convenient to the tested insulating tool of bar dry type to be placed into clamping plate electrode etc.
Referring to Fig. 2 and Fig. 7: while carrying out 750kV insulating tool ac voltage withstanding Sectional Test, laid the present invention, the spacing L that adjusts the front horizontally-arranged outside two eradication edge liftable supports of rectangular frame is 4.8m, install clamping plate electrode 6, utilize insulating cord 11 in high-altitude, to rise cylinder electrode 9, make cylinder electrode 9 in horizontal vacant state, from cylinder electrode 9 two ends, draw respectively next root high pressure again and divide voltage lead wires 8, divide voltage lead wires 8 to be connected to the outer end of the 11 group of clamping plate electrode 609 and the 13 group of clamping plate electrode 611 two high pressure, a high pressure divides voltage lead wires 8 to be connected to the link of the 11 group of clamping plate electrode 609 and first group of clamping plate electrode 607 of front horizontally-arranged, another root high pressure divides voltage lead wires 8 to be connected to the link of the 13 group of clamping plate electrode 611 and second group of clamping plate electrode 608 of front horizontally-arranged, also can divide voltage lead wires 8 to be connected on the first mid point supporting plate 13 and the second mid point supporting plate 14 two high pressure, two high pressure divide voltage lead wires 8 that two groups of clamping plate electrodes of front horizontally-arranged are divided into and equal 1.2 meters four sections, make it meet the test length of 4.7 meters of full voltage test, the bolt 606 of opening clamp plate electrode one end, train wheel bridge is started, the tested insulating tool of bar bar type is arranged on according to the order of sequence one by one to the tooth paddy of the lower plate of ten groups of longitudinal clamping plate electrodes, fasten train wheel bridge, the tested insulating tool of bar bar type is arranged in the rhombus electrode hole 604 of ten groups of longitudinal clamping plate electrodes.Cylinder electrode 9 connects high-voltage connection 10, high-voltage connection 10 connects 500kV testing transformer, start 500kV testing transformer, from high-voltage connection 10, start pressurization, through cylinder electrode 9, from high pressure, divide voltage lead wires 8 to be divided into two separately voltage, again from two minutes voltage lead wires again dividing potential drop be four sections from high-voltage connection 10 voltages 1/4th, a whole 750kV insulating tool is carried out to segmentation withstand voltage test simultaneously.
Embodiment of the method is with reference to Fig. 2 and Fig. 7: a kind of 750kV insulating tool segmentation alternating current withstand voltage test method, carries out in the steps below:
A. configure nine eradication edge liftable supports, 14 groups of clamping plate electrodes and three cover earthing device, wherein the length of four groups of clamping plate electrodes is 2.4 meters, and all the other ten groups of clamping plate electrode lengths are identical is 1.6 meters; Configure 500kV testing transformer, cylinder electrode and insulation step stool simultaneously;
B. nine eradication edge liftable supports are arranged on to ground and are that 3 * 3 rows arrange by horizontally-arranged * tandem; Be positioned at peripheral eight can insulated lift support top fixedly mount eight groups of clamping plate electrodes, at the top of middle tandem insulation liftable support, fixedly mount two groups of clamping plate electrodes, length is that the clamping plate electrode of 2.4 meters is arranged on front horizontally-arranged and rear horizontally-arranged; First group of front horizontally-arranged, with the point midway of first group of clamping plate electrode of rear horizontally-arranged, two groups of clamping plate electrodes are installed, second group of front horizontally-arranged, with the point midway of second group of clamping plate electrode of rear horizontally-arranged, two groups of clamping plate electrodes are installed; Insulation liftable support and clamping plate electrode form rectangular frame;
C. regulate the Height Adjustable insulation strut of nine eradication edge liftable supports, making top is 2.3m apart from floor level; Before adjusting, two groups of clamping plate electrodes of horizontally-arranged are in the position of insulation liftable support, making two groups of clamping plate electrode length sums is 4.8m, the spacing that is the front horizontally-arranged outside two eradication edge liftable supports of rectangular frame is 4.8m, reaches the test length 4.7m that meets 750kV insulating tool; In like manner, after adjusting, two groups of clamping plate electrodes of horizontally-arranged are in the position of insulation liftable support, and making two groups of clamping plate electrode length sums is 4.8m;
D. insulation step stool is positioned over to the periphery of the test facilities of two groups of clamping plate electrodes and Height Adjustable insulation strut composition; Open the bolt of each tandem clamping plate electrode one end, by the sawtooth grooves that is placed on according to the order of sequence clamping plate electrode of many bar dry type products to be tested, then with bolt, train wheel bridge and lower plate are connected and fixed;
E. three cover earthing device are arranged on respectively to three liftable supports of front horizontally-arranged, earthing device one end is connected with supporting plate, the other end is connected with the chassis of this supporting plate place liftable support; Because clamping plate electrode is arranged on liftable support by the supporting plate of metal material, earthing device is connected with supporting plate, clamping plate electrode is by supporting board earthing device by clamping plate electrode, and the inner side of clamping plate electrode is copper sheet parcel, and after therefore connecting, nature is by the insulating tool short circuit ground connection of segmentation;
F. by the high-voltage connection connecting cylinder electrode of 500kV testing transformer, from cylinder electrode two ends, draw respectively a high pressure and divide voltage lead wires, divide voltage lead wires to be connected to first group of clamping plate electrode of installing with the point midway of first group of clamping plate electrode of rear horizontally-arranged of front horizontally-arranged a high pressure, divide voltage lead wires at second group of two groups of clamping plate electrode installing with the point midway of second group of clamping plate electrode of rear horizontally-arranged of front horizontally-arranged another root high pressure; In like manner, because the inner side of clamping plate electrode is copper sheet parcel, after therefore connecting, nature is by the whole short circuits of the insulating tool of this side; Thereby the bar dry type product to be tested of 4.8m is divided into the quartern of 1.2m;
G. confirm that wiring is correct, field staff is cleared out a gathering place; High-voltage connection is connected with 500kV testing transformer output line, bar dry type product to be tested is pressurizeed, boost to 234kV(segmentation voltage and calculate 780 * 1.2 ÷ 4=234kV), 5 minutes pressing times;
H. timing at the uniform velocity step-down after 5 minutes, cuts off the electricity supply after being depressurized to 0 display position, enters test facilities and checks test specimen, if test specimen be take without puncturing, being certified products without flashover, without heating under the trial voltage of regulation and tolerance time.
Bar dry type product to be tested comprises insulating bar, electroscope, link rod etc.
Claims (2)
1. a 750kV insulating tool segmentation alternating current withstand voltage test method, comprises the steps:
A. configure nine eradication edge liftable supports, 14 groups of clamping plate electrodes and three cover earthing device, wherein the length of four groups of clamping plate electrodes is 2.4 meters, and all the other ten groups of clamping plate electrode lengths are identical is 1.6 meters; Configure 500kV testing transformer, cylinder electrode and insulation step stool simultaneously;
B. nine eradication edge liftable supports are arranged on to ground and are that 3 * 3 rows arrange by horizontally-arranged * tandem; Be positioned at peripheral eight can insulated lift support top fixedly mount eight groups of clamping plate electrodes, at the top of middle tandem insulation liftable support, fixedly mount two groups of clamping plate electrodes, length is that the clamping plate electrode of 2.4 meters is arranged on front horizontally-arranged and rear horizontally-arranged; First group of front horizontally-arranged, with the point midway of first group of clamping plate electrode of rear horizontally-arranged, two groups of clamping plate electrodes are installed, second group of front horizontally-arranged, with the point midway of second group of clamping plate electrode of rear horizontally-arranged, two groups of clamping plate electrodes are installed; Insulation liftable support and clamping plate electrode form rectangular frame;
C. regulate the Height Adjustable insulation strut of nine eradication edge liftable supports, making top is 2.3m apart from floor level; Before adjusting, two groups of clamping plate electrodes of horizontally-arranged are in the position of insulation liftable support, making two groups of clamping plate electrode length sums is 4.8m, the spacing that is the front horizontally-arranged outside two eradication edge liftable supports of rectangular frame is 4.8m, reaches the test length 4.7m that meets 750kV insulating tool; In like manner, after adjusting, two groups of clamping plate electrodes of horizontally-arranged are in the position of insulation liftable support, and making two groups of clamping plate electrode length sums is 4.8m;
D. insulation step stool is positioned over to the periphery of the test facilities of two groups of clamping plate electrodes and Height Adjustable insulation strut composition; Open the bolt of each tandem clamping plate electrode one end, by the sawtooth grooves that is placed on according to the order of sequence clamping plate electrode of many bar dry type products to be tested, then with bolt, train wheel bridge and lower plate are connected and fixed;
E. three cover earthing device are arranged on respectively to three liftable supports of front horizontally-arranged, earthing device one end is connected with supporting plate, the other end is connected with the chassis of this supporting plate place liftable support; Because clamping plate electrode is arranged on liftable support by the supporting plate of metal material, earthing device is connected with supporting plate, clamping plate electrode is by supporting board earthing device by clamping plate electrode, and the inner side of clamping plate electrode is copper sheet parcel, and after therefore connecting, nature is by the insulating tool short circuit ground connection of segmentation;
F. by the high-voltage connection connecting cylinder electrode of 500kV testing transformer, from cylinder electrode two ends, draw respectively a high pressure and divide voltage lead wires, divide voltage lead wires to be connected to first group of clamping plate electrode of installing with the point midway of first group of clamping plate electrode of rear horizontally-arranged of front horizontally-arranged a high pressure, divide voltage lead wires at second group of two groups of clamping plate electrode installing with the point midway of second group of clamping plate electrode of rear horizontally-arranged of front horizontally-arranged another root high pressure; In like manner, because the inner side of clamping plate electrode is copper sheet parcel, after therefore connecting, nature is by the whole short circuits of the insulating tool of this side; Thereby the bar dry type product to be tested of 4.8m is divided into the quartern of 1.2m;
G. confirm that wiring is correct, field staff is cleared out a gathering place; High-voltage connection is connected with 500kV testing transformer output line, bar dry type product to be tested is pressurizeed, boost to 234kV, 5 minutes pressing times;
H. timing at the uniform velocity step-down after 5 minutes, cuts off the electricity supply after being depressurized to 0 display position, enters test facilities and checks test specimen, if test specimen be take without puncturing, being certified products without flashover, without heating under the trial voltage of regulation and tolerance time.
2. a kind of 750kV insulating tool segmentation alternating current withstand voltage test method according to claim 1, is characterized in that: bar dry type product to be tested comprises insulating bar, electroscope, link rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410260668.XA CN104020400B (en) | 2014-06-12 | 2014-06-12 | 750kV insulating tool segmentation ac voltage withstanding test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410260668.XA CN104020400B (en) | 2014-06-12 | 2014-06-12 | 750kV insulating tool segmentation ac voltage withstanding test method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104020400A true CN104020400A (en) | 2014-09-03 |
| CN104020400B CN104020400B (en) | 2016-09-28 |
Family
ID=51437260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410260668.XA Expired - Fee Related CN104020400B (en) | 2014-06-12 | 2014-06-12 | 750kV insulating tool segmentation ac voltage withstanding test method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104020400B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104635132A (en) * | 2015-03-07 | 2015-05-20 | 国网宁夏电力公司固原供电公司 | Equipment for withstand voltage test of insulation tools and instruments |
| CN105929311A (en) * | 2016-04-29 | 2016-09-07 | 国家电网公司 | Ultrahigh-voltage live-line operation tool segment test apparatus and application method thereof |
| CN106443369A (en) * | 2016-08-31 | 2017-02-22 | 云南电网有限责任公司楚雄供电局 | Electric withstand-voltage test wiring apparatus for multiple insulation rods |
| CN110716114A (en) * | 2019-11-28 | 2020-01-21 | 国网河北省电力有限公司沧州供电分公司 | Insulating rod withstand voltage test appurtenance |
| CN110727001A (en) * | 2018-07-05 | 2020-01-24 | 上海微小卫星工程中心 | Signal source grounding device |
| CN116500396A (en) * | 2023-06-30 | 2023-07-28 | 新河县珠兴铜业有限公司 | Finished product insulativity detection device for insulating material production |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61108977A (en) * | 1984-10-31 | 1986-05-27 | Showa Electric Wire & Cable Co Ltd | Method of withstand voltage test |
| EP0441291A1 (en) * | 1990-02-05 | 1991-08-14 | Sumitomo Wiring Systems, Ltd. | Withstand-voltage testing method and apparatus |
| JPH05240891A (en) * | 1992-02-26 | 1993-09-21 | Togami Electric Mfg Co Ltd | Detecting device for service interruption of high voltage three-phase ac power source of isolated neutral system |
| JPH06269109A (en) * | 1993-03-12 | 1994-09-22 | Mitsubishi Electric Corp | Insulation testing device |
| CN201196676Y (en) * | 2008-05-14 | 2009-02-18 | 中国石化集团胜利石油管理局电力管理总公司 | Pressure-resistant experiment clip for rod-shaped insulation safety appliance |
| CN201740798U (en) * | 2010-06-28 | 2011-02-09 | 中铁电气化局集团有限公司 | Insulating pole withstand voltage test rack |
| CN102495245A (en) * | 2011-12-02 | 2012-06-13 | 山东电力集团公司威海供电公司 | Withstand voltage test platform and test device for insulation rod |
| CN203275465U (en) * | 2013-06-08 | 2013-11-06 | 保定市汇邦电气有限公司 | Insulator spindle overpressure resistant test support |
| CN203299336U (en) * | 2013-06-08 | 2013-11-20 | 国家电网公司 | Multifunctional safety equipment-instrument batch rectification testing instrument |
| CN103713165A (en) * | 2013-12-31 | 2014-04-09 | 国家电网公司 | Support for insulating rod withstand voltage testing |
| CN203587748U (en) * | 2013-12-05 | 2014-05-07 | 国家电网公司 | High-voltage insulating rod detecting table |
| CN203616349U (en) * | 2013-12-10 | 2014-05-28 | 国家电网公司 | An insulating bar withstand voltage test specially-used support |
-
2014
- 2014-06-12 CN CN201410260668.XA patent/CN104020400B/en not_active Expired - Fee Related
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61108977A (en) * | 1984-10-31 | 1986-05-27 | Showa Electric Wire & Cable Co Ltd | Method of withstand voltage test |
| EP0441291A1 (en) * | 1990-02-05 | 1991-08-14 | Sumitomo Wiring Systems, Ltd. | Withstand-voltage testing method and apparatus |
| JPH05240891A (en) * | 1992-02-26 | 1993-09-21 | Togami Electric Mfg Co Ltd | Detecting device for service interruption of high voltage three-phase ac power source of isolated neutral system |
| JPH06269109A (en) * | 1993-03-12 | 1994-09-22 | Mitsubishi Electric Corp | Insulation testing device |
| CN201196676Y (en) * | 2008-05-14 | 2009-02-18 | 中国石化集团胜利石油管理局电力管理总公司 | Pressure-resistant experiment clip for rod-shaped insulation safety appliance |
| CN201740798U (en) * | 2010-06-28 | 2011-02-09 | 中铁电气化局集团有限公司 | Insulating pole withstand voltage test rack |
| CN102495245A (en) * | 2011-12-02 | 2012-06-13 | 山东电力集团公司威海供电公司 | Withstand voltage test platform and test device for insulation rod |
| CN203275465U (en) * | 2013-06-08 | 2013-11-06 | 保定市汇邦电气有限公司 | Insulator spindle overpressure resistant test support |
| CN203299336U (en) * | 2013-06-08 | 2013-11-20 | 国家电网公司 | Multifunctional safety equipment-instrument batch rectification testing instrument |
| CN203587748U (en) * | 2013-12-05 | 2014-05-07 | 国家电网公司 | High-voltage insulating rod detecting table |
| CN203616349U (en) * | 2013-12-10 | 2014-05-28 | 国家电网公司 | An insulating bar withstand voltage test specially-used support |
| CN103713165A (en) * | 2013-12-31 | 2014-04-09 | 国家电网公司 | Support for insulating rod withstand voltage testing |
Non-Patent Citations (1)
| Title |
|---|
| 方年安: "绝缘工具分段与整体工频耐压试验等价性探讨", 《东北电力技术》, no. 7, 31 December 1994 (1994-12-31), pages 44 - 46 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104635132A (en) * | 2015-03-07 | 2015-05-20 | 国网宁夏电力公司固原供电公司 | Equipment for withstand voltage test of insulation tools and instruments |
| CN105929311A (en) * | 2016-04-29 | 2016-09-07 | 国家电网公司 | Ultrahigh-voltage live-line operation tool segment test apparatus and application method thereof |
| CN106443369A (en) * | 2016-08-31 | 2017-02-22 | 云南电网有限责任公司楚雄供电局 | Electric withstand-voltage test wiring apparatus for multiple insulation rods |
| CN106443369B (en) * | 2016-08-31 | 2023-02-28 | 云南电网有限责任公司楚雄供电局 | Many insulating poles of electrodynamic type withstand voltage test termination |
| CN110727001A (en) * | 2018-07-05 | 2020-01-24 | 上海微小卫星工程中心 | Signal source grounding device |
| CN110716114A (en) * | 2019-11-28 | 2020-01-21 | 国网河北省电力有限公司沧州供电分公司 | Insulating rod withstand voltage test appurtenance |
| CN116500396A (en) * | 2023-06-30 | 2023-07-28 | 新河县珠兴铜业有限公司 | Finished product insulativity detection device for insulating material production |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104020400B (en) | 2016-09-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104035014A (en) | Method for alternating-current voltage withstand testing of 220 kV and 330 kV insulated tools and instruments | |
| CN104020400A (en) | Subsection alternating current voltage withstanding test method for 750kV insulation tool and instrument | |
| CN104007375A (en) | Facility for alternating current voltage withstand tests for 200kV and 330kV insulation tools and instruments | |
| CN103175998B (en) | A kind of portable test shaft tower detected for transmission circuit insulator string high-voltage performance | |
| CN204086456U (en) | 750kV insulating tool segmentation alternating-current voltage resistance test device | |
| US9444232B2 (en) | Site grounding and bonding system | |
| CN106451224B (en) | A kind of hot line robot metal oxide arrester replacing options | |
| CN202330483U (en) | Insulating rod test bed | |
| CN201819928U (en) | Fixing bracket for arrestor test | |
| CN204789734U (en) | Electrician's utensil is tested to portable high pressure | |
| CN202562960U (en) | 10-kilovolt (kV) arrester test-bed rack | |
| CN103887735A (en) | Linear charged wire lifting device of electric transmission line | |
| CN104635132A (en) | Equipment for withstand voltage test of insulation tools and instruments | |
| CN203909227U (en) | 220kV and 330kV insulation tool AC high-voltage holding test device | |
| CN104020399A (en) | Subsection alternating current voltage withstanding test facility for 750kV insulation tool and instrument | |
| CN204439788U (en) | Insulating tool withstand voltage test equipment | |
| CN203909222U (en) | Clamp plate electrode for 220 kV and greater insulation tool AC high-voltage holding test device | |
| CN201802299U (en) | Special ladder for high-tension line maintenance | |
| CN205070178U (en) | Portable maintenance power supply box | |
| CN209148844U (en) | A kind of high-voltage circuitbreaker test short jumper device | |
| CN208654276U (en) | A kind of insulating rope voltage resistant test frame | |
| CN112485619A (en) | Hierarchical multifunctional line insulator testing device and method | |
| CN109950830A (en) | The provision for disengagement of hot line robot arrester and method | |
| CN206400166U (en) | Cable fitting more than a kind of double cable OPGW of transformer station's single pole | |
| CN105161878A (en) | Power distribution fast acousto-optic electricity testing grounding wire |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160928 Termination date: 20190612 |