CN112858740B - Insulating type test intelligent control cabinet for medium-voltage switchgear - Google Patents

Insulating type test intelligent control cabinet for medium-voltage switchgear Download PDF

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Publication number
CN112858740B
CN112858740B CN202110114817.1A CN202110114817A CN112858740B CN 112858740 B CN112858740 B CN 112858740B CN 202110114817 A CN202110114817 A CN 202110114817A CN 112858740 B CN112858740 B CN 112858740B
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CN
China
Prior art keywords
wall bushing
switch
outer shell
switching device
control cabinet
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CN202110114817.1A
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Chinese (zh)
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CN112858740A (en
Inventor
苏春强
李强
安海舰
孙浩
吴亮
周敏刚
毛文安
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Xian High Voltage Apparatus Research Institute Co Ltd
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Xi'an High Voltage Electrical Apparatus Research Institute Co ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/02General constructional details
    • G01R1/04Housings; Supporting members; Arrangements of terminals

Abstract

The invention relates to the technical field of control cabinets, in particular to an insulation type test intelligent control cabinet for medium-voltage switchgear, which comprises an outer shell, a first wall bushing, a first insulation support, a first switching device, a second wall bushing, a second switching device and a second insulation support, wherein a plurality of first wall bushings are arranged on the outer side of the outer shell, and a plurality of second wall bushings are also arranged on the outer side of the outer shell. According to the invention, the external shell adopts a closed design, so that external dust can be effectively reduced from entering the control platform, and the internal insulation level of the control platform is ensured not to be reduced in the long-term use process; the pneumatic control valve linear action switch has the advantages of small volume, light weight, high reliability and the like, can effectively save the internal space of a control platform, completely realizes gas-electric isolation and improves test safety.

Description

Insulating type test intelligent control cabinet for medium-voltage switchgear
Technical Field
The invention relates to the technical field of control cabinets, in particular to an intelligent control cabinet for an insulation type test of medium-voltage switch equipment.
Background
The medium voltage switchgear has the excellent characteristics of being capable of configuring different components according to different using conditions, realizing on-site fault isolation, quickly recovering power supply and greatly improving power supply reliability, so that the medium voltage switchgear is widely applied to power distribution systems, railway systems, factory enterprises, oil and gas fields and the like, type tests are carried out for verifying whether products can meet all requirements of technical specifications, the medium voltage switchgear is an essential link in new product identification, a test voltage source and a measuring system device which are required by connection are needed in a traditional test method, the state of a test sample is changed or the wiring state is required to be changed again when the test type is changed, the test efficiency is low, and the research on an intelligent control cabinet for the insulation type test of the medium voltage switchgear is of great significance.
Disclosure of Invention
The invention aims to provide an intelligent control cabinet for an insulation type test of medium-voltage switchgear, which solves the existing problems: the traditional test method needs to connect a required test voltage source and a measurement system device when a test is performed, and rewiring is needed when the state of a test sample is changed or the test type is changed, so that personnel are needed to change the wiring state for many times when the test is performed, and the test efficiency is low.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides an intelligent control cabinet of medium voltage switchgear insulation type test, includes outside casing, first wall bushing, first insulating pillar, first switching device, second wall bushing, second switching device and second insulating pillar, a plurality of first wall bushing is installed in the outside of outside casing, a plurality of second wall bushing is still installed in the outside of outside casing, the both ends of first wall bushing and second wall bushing all are provided with the terminal, the terminal that the second wall bushing is located the outside casing is connected with external power source and measurement system respectively, the terminal that the second wall bushing is located the inside of outside casing links to each other with second switching device, second switching device is located the inside of outside casing, second switching device is the same with second wall bushing quantity;
the first switch device is independently arranged on the first insulating support column, the first wall bushing and the second wall bushing cannot be affected due to frequent vibration, the first switch device and the first insulating support column are located inside the outer shell, one end, away from the first switch device, of the first insulating support column is fixed with the inner wall of the outer shell, the number of the first switch devices is the same as that of the second switch device, the first wall bushing is located outside the outer shell and is connected with a sample terminal, and the terminal, located inside the outer shell, of the first wall bushing is provided with a switch contact, and is convenient to be connected with the first switch device, the second grounding switch and the third grounding switch.
Preferably, the outer shell is formed by welding a steel plate, the surface of the outer shell is subjected to plastic spraying treatment, an access door is arranged on the outer side of the outer shell, later maintenance and overhaul can be facilitated, and the pneumatic control hole is further formed in the outer side of the outer shell.
Preferably, the second insulating support is further fixed inside the outer casing, the second switching device is mounted on the second insulating support, and the first insulating support and the second insulating support adopt support insulators, so that the first wall bushing and the second wall bushing are prevented from being affected by frequent action vibration.
Preferably, the first switch device is an up-down linear motion type pneumatic switch, so that the internal space of the control platform can be effectively saved.
Preferably, the outer shell is provided with a plurality of third grounding switches and a plurality of second grounding switches on one side of the second wall bushing, the number of the second grounding switches, the number of the third grounding switches and the number of the second wall bushing are the same, the second grounding switches and the third grounding switches are parallel linear action switches, and when the switches are closed, the second grounding switches are connected with contacts on the first wall bushing so as to realize a grounding function.
Preferably, the second switch device is a linear action type pneumatic switch, so that the internal space of the control platform can be effectively saved, the second switch device is connected with the first switch device for pressurization, and the second switch device is connected with the second grounding switch and the third grounding switch for grounding.
Preferably, except the linkage switch, all switch breaks can be independently opened and closed, pneumatic control valves are arranged on two sides of all the switches, so that the pneumatic control valves completely realize pneumatic and electric isolation, detect the in-place state of the switch action and feed back signals to a control system, and detect the in-place state of the switch action and feed back signals to the control system.
Preferably, a first grounding switch is further installed on the outer side of the outer shell, and the first grounding switch is connected with the sample chassis and the shell and also serves as a protection switch.
Preferably, the bottom end of the outer shell is provided with a supporting beam, so that the outer shell can be effectively separated from the ground when being placed on the ground.
Preferably, the four end angle positions at the top end of the outer shell are respectively provided with a movable hook, so that the carrying equipment is convenient to carry or move through being fixed with the movable hooks.
The invention has at least the following beneficial effects:
1. according to the invention, the test efficiency is remarkably improved by changing the state of the test sample or changing the test type without rewiring.
2. According to the invention, the external shell is in a closed design, so that external dust can be effectively reduced from entering the control platform, the internal insulation level of the control platform is not reduced in the long-term use process, and meanwhile, the shell is provided with an access door, so that the daily maintenance and overhaul of a user can be facilitated; the pneumatic control valve linear action switch has the advantages of small volume, light weight, high reliability and the like, can effectively save the internal space of a control platform, completely realize gas-electricity isolation and improve the test safety; the pneumatic control valve detects the in-place state of the switch action and feeds back a signal to the control system; the control system can be used for controlling related operations such as switch opening and closing and pressurization programs.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a left side view of the overall structure of an intelligent control cabinet for an insulation type test of medium voltage switchgear;
FIG. 2 is a front view of a connection structure of an intelligent control cabinet for an insulation type test of medium voltage switchgear;
FIG. 3 is an enlarged view of a part of the structure of an insulation type test intelligent control cabinet for medium voltage switchgear according to the present invention;
fig. 4 is a right side view of a connection structure of an insulation type test intelligent control cabinet for medium voltage switchgear according to the present invention;
FIG. 5 is a rear view of the connection structure of the intelligent control cabinet for the insulation type test of the medium voltage switchgear;
fig. 6 is a schematic diagram of an insulation type test intelligent control cabinet for medium voltage switchgear according to the present invention.
In the figure: 1. an outer housing; 2. a first grounding switch; 3. a first wall bushing; 4. a first insulating support; 5. a first switching device; 6. a second grounding switch; 7. the second wall bushing; 8. a second switching device; 9. a third grounding switch; 10. a pneumatic control orifice; 11. and a second insulating support.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1-6, an insulation type test intelligent control cabinet for medium voltage switchgear comprises an outer shell 1, a first wall bushing 3, a first insulation support column 4, a first switch device 5, a second wall bushing 7, a second switch device 8 and a second insulation support column 11, wherein a plurality of first wall bushings 3 are installed on the outer side of the outer shell 1, a plurality of second wall bushings 7 are also installed on the outer side of the outer shell 1, a plurality of third grounding switches 9 and a plurality of second grounding switches 6 are also installed on one side of the outer shell 1, which is provided with the second wall bushing 7, the number of the second grounding switches 6, the third grounding switches 9 and the second wall bushing 7 is the same, the second grounding switches 6 and the third grounding switches 9 are parallel linear action switches, and are connected with contacts on the first wall bushing 3 when the switches are closed so as to realize a grounding function;
the outer side of the outer shell 1 is also provided with a first grounding switch 2, and the first grounding switch 2 is connected with the sample underframe and the shell and also serves as a protection switch; the bottom end of the outer shell 1 is provided with a supporting beam, so that the outer shell 1 can be effectively separated from the ground when being placed on the ground; the four end angle positions at the top end of the outer shell 1 are respectively provided with a movable hook, so that the carrying equipment is convenient to carry or move through being fixed with the movable hooks; the outer shell 1 is formed by welding steel plates, the surface of the outer shell 1 is subjected to plastic spraying treatment, an access door is arranged on the outer side of the outer shell 1, later maintenance and overhaul can be facilitated, and a pneumatic control hole 10 is formed in the outer side of the outer shell 1;
terminals are arranged at two ends of the first wall bushing 3 and the second wall bushing 7, the terminals of the second wall bushing 7 positioned at the outer side of the outer shell 1 are respectively connected with an external power supply and a measuring system, the terminals of the second wall bushing 7 positioned at the inner side of the outer shell 1 are connected with second switch devices 8, the second switch devices 8 are positioned in the outer shell 1, and the number of the second switch devices 8 is the same as that of the second wall bushing 7; the second insulating support 11 is also fixed in the outer shell 1, the second switch device 8 is arranged on the second insulating support 11, the first insulating support 4 and the second insulating support 11 adopt support insulators, and the influence of frequent action vibration on the first wall bushing 3 and the second wall bushing 7 is avoided; the second switch device 8 is a linear action type pneumatic switch, so that the internal space of the control platform can be effectively saved, the second switch device 8 is connected with the first switch device 5 for pressurization, and the second switch device 8 is connected with the second grounding switch 6 and the third grounding switch 9 for grounding;
the first switch device 5 is independently arranged on the first insulating support column 4, so that the first wall bushing 3 and the second wall bushing 7 are not affected by frequent action vibration, and the first switch device 5 is an up-down linear action type pneumatic switch, so that the internal space of a control platform can be effectively saved; the first switch device 5 and the first insulating support column 4 are located inside the outer shell 1, one end, away from the first switch device 5, of the first insulating support column 4 is fixed with the inner wall of the outer shell 1, the number of the first switch devices 5 is the same as that of the second switch devices 8, the terminals of the first wall bushing 3 located outside the outer shell 1 are connected with the sample terminals, the terminals of the first wall bushing 3 located inside the outer shell 1 are provided with switch contacts, and the connection 9 with the first switch device 5, the second grounding switch 6 and the third grounding switch is facilitated.
Except the linkage switch, all switch breaks can be independently opened, and all switch both sides are equipped with the pneumatic control valve, accomplish the gas electricity completely and keep apart, and the pneumatic control valve detects switch action state in place and feedback signal to control system.
Working principle: the first grounding switch 2 is connected with the sample chassis and the shell, the outer side terminals of the first wall bushing 3 are respectively connected with the sample terminals ABCabc during test, the outer side terminals of one second wall bushing 7 are connected with the power frequency test transformer, and the outer side terminals of other second wall bushings 7 are respectively connected with the impulse voltage generator and the measurement system thereof;
when the power frequency withstand voltage test is carried out, the first grounding switch 2 is connected with the sample chassis and the shell F, the sample A is grounded by adding high voltage BCabcF, one of the second switching devices 8 is connected with one of the first switching devices 5, the first switching device 5 connected with the second switching device 8 is connected with the inner side terminal of the first wall bushing 3 at the upper end of the first switching device 5, the rest of the second switching devices 8 are connected with the corresponding second grounding switch 6, and the first wall bushing 3 at the lower end of the outer shell 1 is respectively connected with the inner side terminal of the second grounding switch 6 to realize grounding. Wherein, two third grounding switches 9 are connected with the inner side terminals of the first wall bushing 3 corresponding to the upper end of the outer shell 1 to realize grounding.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention, which is defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (7)

1. The utility model provides an experimental intelligent control cabinet of medium voltage switchgear insulation pattern, its characterized in that includes outside casing (1), first wall bushing (3), first insulating pillar (4), first switching device (5), second wall bushing (7), second switching device (8) and second insulating pillar (11), a plurality of first wall bushing (3) are installed in outside casing (1), a plurality of second wall bushing (7) are still installed in the outside of outside casing (1), the both ends of first wall bushing (3) and second wall bushing (7) all are provided with the terminal, the terminal that second wall bushing (7) are located outside casing (1) is connected with external power source and measurement system respectively, terminal and second switching device (8) that second wall bushing (7) are located outside casing (1) are connected, second switching device (8) are located inside casing (1), second switching device (8) are the same with second wall bushing (7) quantity;
the first switch devices (5) are independently arranged on the first insulating support columns (4), the first switch devices (5) and the first insulating support columns (4) are located inside the outer shell (1), one ends, far away from the first switch devices (5), of the first insulating support columns (4) are fixed with the inner wall of the outer shell (1), the number of the first switch devices (5) is the same as that of the second switch devices (8), the terminals, located outside the outer shell (1), of the first wall bushing (3) are connected with the sample terminals, and the terminals, located inside the outer shell (1), of the first wall bushing (3) are provided with switch contacts;
the external shell (1) is provided with a plurality of third grounding switches (9) and a plurality of second grounding switches (6) on one side of a second wall bushing (7), the number of the second grounding switches (6), the number of the third grounding switches (9) and the number of the second wall bushing (7) are the same, and the second grounding switches (6) and the third grounding switches (9) are parallel linear action switches;
except the linkage switch, all switch breaks can be independently opened and closed, and the two sides of all switches are provided with pneumatic control valves;
the outside of the outer shell (1) is also provided with a first grounding switch (2), and the first grounding switch (2) is connected with the sample chassis and the shell and also serves as a protection switch.
2. The intelligent control cabinet for medium voltage switchgear insulation type test according to claim 1, wherein the outer shell (1) is welded by steel plates, the surface of the outer shell (1) is subjected to plastic spraying treatment, an access door is assembled on the outer side of the outer shell (1), and a pneumatic control hole (10) is further formed on the outer side of the outer shell (1).
3. An intelligent control cabinet for medium voltage switchgear insulation pattern test according to claim 1, characterized in that the inside of the outer housing (1) is also fixed with a second insulation support (11), the second switching device (8) is mounted on the second insulation support (11), and the first insulation support (4) and the second insulation support (11) are made of support insulators.
4. An insulation pattern test intelligent control cabinet for medium voltage switchgear as claimed in claim 1, wherein the first switching device (5) is a pneumatic switch with linear motion up and down.
5. An insulation pattern test intelligent control cabinet for medium voltage switchgear according to claim 1, characterized in that the second switching device (8) is a linear motion type pneumatic switch.
6. An intelligent control cabinet for medium voltage switchgear insulation pattern test according to claim 1, characterized in that the bottom end of the outer housing (1) is provided with a supporting beam.
7. An intelligent control cabinet for medium voltage switchgear insulation pattern test according to claim 1, characterized in that the four end angular positions of the top end of the outer housing (1) are provided with movable hooks.
CN202110114817.1A 2021-01-26 2021-01-26 Insulating type test intelligent control cabinet for medium-voltage switchgear Active CN112858740B (en)

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CN112858740B true CN112858740B (en) 2023-10-20

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113985268A (en) * 2021-10-29 2022-01-28 西安高压电器研究院有限责任公司 Intelligent equipment for insulation test of medium-voltage switchgear
CN117269691A (en) * 2023-09-27 2023-12-22 国网山西省电力公司电力科学研究院 System and method for testing internal state and insulation characteristic of wall bushing

Citations (7)

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Publication number Priority date Publication date Assignee Title
JPS57135806U (en) * 1981-02-20 1982-08-24
CN101539593A (en) * 2009-04-24 2009-09-23 安徽菲迈斯电气有限公司 Intelligent central metal armouring withdrawing voltage sensing device
CN106936089A (en) * 2017-03-20 2017-07-07 正泰电气股份有限公司 Environment protection type high pressure switchgear
CN110048335A (en) * 2018-01-16 2019-07-23 天津平高智能电气有限公司 A kind of switchgear
CN209496101U (en) * 2018-10-31 2019-10-15 广州市一变电气设备有限公司 A kind of switchgear voltage-withstand test connector
CN210040949U (en) * 2019-07-12 2020-02-07 江苏华鹏变压器有限公司 High-voltage switch cabinet
CN212033521U (en) * 2020-06-10 2020-11-27 华仪电气股份有限公司 Mutual inductance sleeve and switch cabinet

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57135806U (en) * 1981-02-20 1982-08-24
CN101539593A (en) * 2009-04-24 2009-09-23 安徽菲迈斯电气有限公司 Intelligent central metal armouring withdrawing voltage sensing device
CN106936089A (en) * 2017-03-20 2017-07-07 正泰电气股份有限公司 Environment protection type high pressure switchgear
CN110048335A (en) * 2018-01-16 2019-07-23 天津平高智能电气有限公司 A kind of switchgear
CN209496101U (en) * 2018-10-31 2019-10-15 广州市一变电气设备有限公司 A kind of switchgear voltage-withstand test connector
CN210040949U (en) * 2019-07-12 2020-02-07 江苏华鹏变压器有限公司 High-voltage switch cabinet
CN212033521U (en) * 2020-06-10 2020-11-27 华仪电气股份有限公司 Mutual inductance sleeve and switch cabinet

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