Multi-port uninterrupted voltage withstanding operation test platform for GIS three-phase common box interval

Abstract

The utility model relates to the field of high-voltage switch GIS equipment test, in particular to a multi-port uninterrupted voltage-withstanding operation test platform for GIS three-phase common-box spacing. The device comprises twelve four-way assemblies, four three-way assemblies, a first pressure supply assembly, a second pressure supply assembly and a second isolation switch. The first voltage supply assembly comprises a first voltage divider of a capacitive voltage transformer, a first isolation switch, a sixth isolation switch and a seventh isolation switch. The first voltage divider of the capacitive voltage transformer is connected with the first isolation switch. The second voltage supply assembly comprises a second voltage divider, a third isolating switch, a fourth isolating switch and a fifth isolating switch of a capacitive voltage transformer, and the second voltage divider of the capacitive voltage transformer is connected with the third isolating switch; and two ends of the second isolating switch are respectively connected with one end of each of the two four-way assemblies. According to the utility model, the withstand voltage test efficiency and the withstand voltage equipment utilization rate of the interval switch equipment can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to high pressure switch GIS equipment test field especially, and it is a kind of multi-port uninterrupted withstand voltage operation test platform for GIS three-phase common box interval. BACKGROUND

[0002] As the important equipment for ensuring the normal operation of power grid in substation, GIS equipment must meet the corresponding insulation level, so interval switch equipment needs to be subjected to power frequency withstand voltage test when leaving factory.

[0003] When carrying out withstand voltage test, multiple sets of pressure equipment are prepared to carry out pressure in batches.For the GIS equipment of three-phase common box, bushing pressure side lead is frequently disassembled during each phase test, and the pressure efficiency is low.In addition, the pressure machine can only pressurize one group of interval, and the utilization rate of pressure equipment is low. UTILITY MODEL CONTENTS

[0004] The utility model aims at the problems in the background art, and provides a kind of multi-port uninterrupted withstand voltage operation test platform for GIS three-phase common box interval, which can improve the withstand voltage test efficiency of interval switch equipment and the utilization rate of pressure equipment.

[0005] The technical scheme of the utility model is a kind of multi-port uninterrupted withstand voltage operation test platform for GIS three-phase common box interval, comprising twelve four-way assemblies, four three-way assemblies, a first voltage supply assembly, a second voltage supply assembly and a second disconnecting switch.The first voltage supply assembly comprises a capacitor voltage transformer first voltage divider, a first disconnecting switch, a sixth disconnecting switch and a seventh disconnecting switch, and the capacitor voltage transformer first voltage divider is connected with the first disconnecting switch.The second voltage supply assembly comprises a capacitor voltage transformer second voltage divider, a third disconnecting switch, a fourth disconnecting switch and a fifth disconnecting switch, and the capacitor voltage transformer second voltage divider is connected with the third disconnecting switch.The two ends of the second disconnecting switch are respectively connected with one end of each of the two four-way assemblies, and in the two four-way assemblies, the remaining three ends of one four-way assembly are respectively connected with the first disconnecting switch, the sixth disconnecting switch and the seventh disconnecting switch, and the remaining three ends of the other four-way assembly are respectively connected with the third disconnecting switch, the fourth disconnecting switch and the fifth disconnecting switch.The first voltage supply assembly and the second voltage supply assembly are connected in parallel with fourteen three-phase auxiliary disconnecting switches through the remaining ten four-way assemblies and four three-way assemblies, and each three-phase auxiliary disconnecting switch is connected with a straight cylinder at the outer end, and the fourteen straight cylinders have fourteen pressure ports at the outer ends.

[0006] Preferably, five four-way assemblies and two three-way assemblies are distributed on one side of the first voltage supply assembly, and the two three-way assemblies are located outside the five four-way assemblies.Seven four-way assemblies and two three-way assemblies are distributed on one side of the second voltage supply assembly, and the two three-way assemblies are located outside the seven four-way assemblies.

[0007] Preferably, the four-way assembly includes a four-way shell, a first cover plate, a first shield, a conductive rod, a first intermediate contact, a second intermediate contact and an insulator, one of the insulators is arranged at each of two communication ports of the four-way shell, the two communication ports of the four-way shell are connected to the first intermediate contact and the second intermediate contact through the two insulators respectively, one ends of the insulators are connected to the outside through a conductor, one of the remaining two communication ports of the four-way shell is connected to the outside through the first intermediate contact, the remaining one is connected to the first cover plate, and the conductive rod and the first shield are connected to the first intermediate contact.

[0008] Preferably, the three-way assembly includes a three-way shell, a second cover plate, a third intermediate contact, a conductive joint and a second shield, one of the communication ports of the three-way shell is connected to the conductive joint and the third intermediate contact through an insulator, one end of the insulator is connected to the outside through a conductor, the second cover plate is connected to the other communication port of the three-way shell, and the second shield is connected to the third intermediate contact.

[0009] Preferably, the four-way shell and the three-way shell are both aluminum alloy shells.

[0010] Preferably, the fourteen straight tubes are different in length.

[0011] Compared with the prior art, the utility model has the following beneficial technical effects:

[0012] The utility model can improve the efficiency of withstand voltage test of interval switch equipment and the utilization rate of withstand voltage equipment. Two capacitive voltage transformers can realize simultaneous or independent work, and one working does not affect the other equipment to carry out interval butt joint, can realize uninterrupted pressure operation, can simultaneously carry out withstand voltage test to fourteen sets of interval switch equipment, convenient operation, easy assembly, convenient maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 It is a structural schematic view of the utility model embodiment;

[0014] Fig. 2 It is a structural schematic view of the four-way assembly;

[0015] Fig. 3 It is a structural schematic view of the three-way assembly.

[0016] Reference numerals: 100, First voltage divider of capacitive voltage transformer; 200, Second voltage divider of capacitive voltage transformer; 101, First withstand voltage port; 102, Second withstand voltage port; 103, Third withstand voltage port; 104, Fourth withstand voltage port; 105, Fifth withstand voltage port; 106, Sixth withstand voltage port; 107, Seventh withstand voltage port; 108, Eighth withstand voltage port; 109, Ninth withstand voltage port; 110, Tenth withstand voltage port; 111, Eleventh withstand voltage port; 112, Twelfth withstand voltage port; 113, Thirteenth withstand voltage port; 114, Fourteenth withstand voltage port; 21 1. First disconnecting switch; 22. Second disconnecting switch; 23. Third disconnecting switch; 24. Fourth disconnecting switch; 25. Fifth disconnecting switch; 26. Sixth disconnecting switch; 27. Seventh disconnecting switch; 3. Four-way assembly; 31. Four-way housing; 32. First cover plate; 33. First shielding cover; 34. Conductive rod; 35. First intermediate contact seat; 36. Second intermediate contact seat; 37. Insulator; 4. T-way assembly; 41. T-way housing; 42. Second cover plate; 43. Third intermediate contact seat; 44. Conductive connector; 45. Second shielding cover; 5. Three-phase manual disconnecting switch; 6. Straight cylinder. Detailed Implementation

[0017] like Figs. 1-3 As shown in the figure, the multi-port uninterrupted withstand voltage test platform for GIS three-phase common enclosure proposed in this embodiment includes twelve four-way assemblies 3, four three-way assemblies 4, a first pressure supply component, a second pressure supply component, and a second disconnecting switch 22.

[0018] The four-way assembly 3 includes a four-way housing 31, a first cover plate 32, a first shielding cover 33, a conductive rod 34, a first intermediate contact 35, a second intermediate contact 36, and an insulator 37. The four-way housing 31 is made of aluminum alloy, and the internal components are also made of aluminum alloy, providing strong conductivity. One insulator 37 is installed at each of the two connecting ports of the four-way housing 31. Each of the two connecting ports is connected to the first intermediate contact 35 and the second intermediate contact 36 via one end of the insulator 37 facing the four-way housing 31. The other end of the insulator 37 is connected to the outside via a different conductor. One of the remaining two connecting ports of the four-way housing 31 is connected to the outside via the first intermediate contact 35, and the remaining connecting port is connected to the first cover plate 32. The conductive rod 34 and the first shielding cover 33 are connected to the first intermediate contact 35. The components of the four-way assembly 3 are connected by bolts.

[0019] The three-way assembly 4 includes a three-way shell 41, a second cover plate 42, a third intermediate contact 43, a conductive connector 44 and a second shielding cover 45. The three-way shell 41 is an aluminum alloy shell, and the inner parts are also made of aluminum alloy, which has strong conductive ability. One communication port of the three-way shell 41 is connected to the conductive connector 44 and the third intermediate contact 43 through an insulator 37 at one end of the shell, and the other end of the insulator 37 is connected to the outside through different conductors. The second cover plate 42 is connected to the other communication port of the three-way shell 41, and the second shielding cover 45 is connected to the third intermediate contact 43. The components of the three-way assembly 4 are connected by bolts.

[0020] The first voltage supply assembly includes a first voltage divider of a capacitive voltage transformer 100, a first disconnecting switch 21, a sixth disconnecting switch 26 and a seventh disconnecting switch 27, and the first voltage divider of the capacitive voltage transformer 100 is connected to the first disconnecting switch 21.

[0021] The second voltage supply assembly includes a second voltage divider of a capacitive voltage transformer 200, a third disconnecting switch 23, a fourth disconnecting switch 24 and a fifth disconnecting switch 25, and the second voltage divider of the capacitive voltage transformer 200 is connected to the third disconnecting switch 23.

[0022] The second disconnecting switch 22 is connected to one end of each of two four-way assemblies 3, and the other three ends of one four-way assembly 3 are respectively connected to the first disconnecting switch 21, the sixth disconnecting switch 26 and the seventh disconnecting switch 27, and the other three ends of the other four-way assembly 3 are respectively connected to the third disconnecting switch 23, the fourth disconnecting switch 24 and the fifth disconnecting switch 25.

[0023] The first voltage supply assembly and the second voltage supply assembly are connected in parallel through the remaining ten four-way assemblies 3 and four three-way assemblies 4, and fourteen three-phase disconnecting switches 5 are connected in parallel, and the plurality of four-way assemblies 3 and three-way assemblies 4 are connected by a bushing and pass through a conductor inside. The fourteen three-phase disconnecting switches 5 are distributed at intervals, and the three-phase disconnecting switches 5 are suitable for phase conversion interfaces with different interval structures. Each three-phase disconnecting switch 5 is connected to a straight cylinder 6 at the outer end, and the outer ends of the fourteen straight cylinders 6 have fourteen pressure ports, which are respectively connected to the interval switches for testing. The fourteen pressure ports are respectively a first pressure port 101, a second pressure port 102, a third pressure port 103, a fourth pressure port 104, a fifth pressure port 105, a sixth pressure port 106, a seventh pressure port 107, an eighth pressure port 108, a ninth pressure port 109, a tenth pressure port 110, an eleventh pressure port 111, a twelfth pressure port 112, a thirteenth pressure port 113 and a fourteenth pressure port 114. The lengths of the fourteen straight cylinders 6 are different, so as to facilitate the arrangement of the pressure interval space when pressure is applied at the same time, so as to avoid overlapping with each other.

[0024] When each pressure port is subjected to pressure test, the three-hand operation disconnecting switch 5 of the fourteen pressure port positions is operated, the phase position disconnecting switch which needs pressure test is closed, the disconnecting switches of the remaining two phases are opened, and the grounding switch is closed; after the test of the phase is completed, the phase switching operation is performed.

[0025] Five four-way assemblies 3 and two three-way assemblies 4 are distributed on one side of the first voltage supply assembly, and the two three-way assemblies 4 are located outside the five four-way assemblies 3. Seven four-way assemblies 3 and two three-way assemblies 4 are distributed on one side of the second voltage supply assembly, and the two three-way assemblies 4 are located outside the seven four-way assemblies 3.

[0026] The embodiment can improve the pressure test efficiency of the disconnecting switch device and the utilization rate of the pressure device. The two capacitor voltage transformers can work simultaneously or independently, and one working does not affect the other device to perform interval docking, uninterrupted pressure operation can be realized, fourteen groups of disconnecting switch devices can be subjected to pressure test at the same time, expansion can be performed according to needs, the pressure test of different interval structures of 145KV can be met, operation is convenient, easy to assemble, and easy to maintain.

[0027] The capacitor voltage transformer first voltage divider 100 and the capacitor voltage transformer second voltage divider 200 can supply voltage to the devices on both sides respectively, or supply voltage to the devices on both sides individually. Specifically, the following three cases are divided:

[0028] 1. When the second disconnecting switch 22 is disconnected, the capacitor voltage transformer first voltage divider 100 and the capacitor voltage transformer second voltage divider 200 can supply voltage to the devices on the respective sides;

[0029] 2. When the second disconnecting switch 22 is connected, the first disconnecting switch 21 is disconnected, and the third disconnecting switch 23 is connected, the capacitor voltage transformer second voltage divider 200 can supply voltage to the devices on the same side and the opposite side at the same time, and the capacitor voltage transformer first voltage divider 100 is maintained;

[0030] 3. When the second disconnecting switch 22 is connected, the first disconnecting switch 21 is connected, and the third disconnecting switch 23 is disconnected, the capacitor voltage transformer first voltage divider 100 can supply voltage to the devices on the same side and the opposite side at the same time, and the capacitor voltage transformer second voltage divider 200 is maintained.

[0031] The embodiments of the utility model are described in detail in combination with the drawings above, but the utility model is not limited to this, various changes can be made within the knowledge range possessed by the person skilled in the art without departing from the purpose of the utility model.

Claims

1. A multi-port uninterrupted voltage-withstanding operation test platform for a GIS three-phase common-tank compartment, characterized in that, include: Twelve four-way assemblies (3) and four three-way assemblies (4); The first voltage supply assembly includes a first voltage divider (100) of a capacitive voltage transformer, a first disconnecting switch (21), a sixth disconnecting switch (26) and a seventh disconnecting switch (27), wherein the first voltage divider (100) of the capacitive voltage transformer is connected to the first disconnecting switch (21). The second voltage supply assembly includes a second voltage divider (200) of a capacitive voltage transformer, a third disconnect switch (23), a fourth disconnect switch (24) and a fifth disconnect switch (25), wherein the second voltage divider (200) of the capacitive voltage transformer is connected to the third disconnect switch (23); The second disconnecting switch (22) is connected at both ends to one end of each of the two four-way assemblies (3). The other three ends of one four-way assembly (3) are connected to the first disconnecting switch (21), the sixth disconnecting switch (26) and the seventh disconnecting switch (27) respectively, and the other three ends of the other four-way assembly (3) are connected to the third disconnecting switch (23), the fourth disconnecting switch (24) and the fifth disconnecting switch (25) respectively. The first and second pressure supply components are connected in parallel with fourteen three-phase manual disconnect switches (5) through the remaining ten four-way assemblies (3) and four three-way assemblies (4). Each three-phase manual disconnect switch (5) has a straight cylinder (6) connected to its outer end. The fourteen straight cylinders (6) have a total of fourteen pressure-resistant ports at their outer ends.

2. The multi-port uninterrupted voltage-withstanding test platform for GIS three-phase common-tank compartment according to claim 1, characterized in that, The first pressure supply assembly has five four-way assemblies (3) and two three-way assemblies (4) distributed on one side, with the two three-way assemblies (4) located outside the five four-way assemblies (3); the second pressure supply assembly has seven four-way assemblies (3) and two three-way assemblies (4) distributed on one side, with the two three-way assemblies (4) located outside the seven four-way assemblies (3).

3. The multi-port uninterrupted voltage-withstanding test platform for GIS three-phase common-tank compartment according to claim 1, characterized in that, The four-way assembly (3) includes a four-way housing (31), a first cover plate (32), a first shield (33), a conductive rod (34), a first intermediate contact (35), a second intermediate contact (36), and an insulator (37). One insulator (37) is provided at each of the two connecting ports of the four-way housing (31). The two connecting ports of the four-way housing (31) are respectively connected to the first intermediate contact (35) and the second intermediate contact (36) through the two insulators (37) facing the four-way housing (31). The other end of the insulator (37) is connected to the outside through a conductor. One of the connecting ports of the other two connecting ports of the four-way housing (31) is connected to the outside through the first intermediate contact (35). The remaining connecting port is connected to the first cover plate (32). The conductive rod (34) and the first shield (33) are connected to the first intermediate contact (35).

4. The multi-port uninterrupted voltage-withstanding test platform for GIS three-phase common-tank compartment according to claim 3, characterized in that, The three-way assembly (4) comprises a three-way shell (41), a second cover plate (42), a third intermediate contact (43), a conductive connector (44) and a second shielding cover (45), one communication port of the three-way shell (41) is connected to the conductive connector (44) and the third intermediate contact (43) through an insulator (37) towards one end of the shell, the other end of the insulator (37) is connected to the outside through a conductor, the second cover plate (42) is connected at the other communication port of the three-way shell (41), and the second shielding cover (45) is connected to the third intermediate contact (43).

5. The multi-port uninterrupted voltage-withstanding test platform for GIS three-phase common-tank compartment according to claim 4, characterized in that, The four-way shell (31) and the three-way shell (41) are both aluminum alloy shells.

6. The multi-port uninterrupted voltage-withstanding test platform for GIS three-phase common-tank compartment according to claim 1, characterized in that, The fourteen straight tubes (6) are of different lengths.

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