CN110501636B - Insulation test device of switch equipment - Google Patents
Insulation test device of switch equipment Download PDFInfo
- Publication number
- CN110501636B CN110501636B CN201910879679.9A CN201910879679A CN110501636B CN 110501636 B CN110501636 B CN 110501636B CN 201910879679 A CN201910879679 A CN 201910879679A CN 110501636 B CN110501636 B CN 110501636B
- Authority
- CN
- China
- Prior art keywords
- contact
- conductive
- hollow
- terminals
- voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0416—Connectors, terminals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Gas-Insulated Switchgears (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The invention discloses an insulation test device of switch equipment, which comprises: the device comprises a detection station, a skid, an automatic wiring switching device and a control system; the automatic wiring switching device is controlled by a control system, automatic switching of connection of an upper flange and a high-voltage terminal or an upper low-voltage terminal of the switch equipment to be detected is achieved, automatic switching of connection of a lower flange and the high-voltage terminal or the lower low-voltage terminal of the switch equipment to be detected is achieved, automatic wiring switching and automatic grounding discharging in an insulation detection process are achieved, time-staggered operation is not needed for assembly with the switch equipment to be detected, manual wiring is not needed, working efficiency is improved, personnel safety is guaranteed, and the technical defect that manual wiring is needed in an insulation experiment process of the existing large switch equipment to be detected is overcome.
Description
Technical Field
The invention relates to the technical field of safety detection of switch equipment, in particular to an insulation test device of switch equipment.
Background
With the increasing requirements of people on the dependence and reliability of power supply and the continuous deepening of electric loads, the voltage grade of a power transmission line is higher and higher, and 72.5kV or above transmission grade switch equipment serving as the most important control and protection equipment in power transmission is also rapidly developed.
Because the transmission grade switch equipment has high voltage grade, heavier weight and larger volume and height, when the transmission grade switch equipment is subjected to an insulation test, the current leading method is as follows: the switch device that awaits measuring, the sample promptly, through fixed operation position assembly debugging back, still stay in this position, when treating personnel's time of clearing the field (mostly utilize night time), adopt the ladder of ascending a height or the car of ascending a height to ascend a height the artifical wiring, implement positive polarity insulation test after the wiring is accomplished, need artifical the discharge after positive polarity insulation test, the second is ascended a height the wiring switching-over, implements negative polarity insulation test, after negative polarity insulation test, artifical the discharge once more, the wiring is removed to the manual work of ascending a height three times.
As shown in fig. 1, a power transmission class switchgear, that is, a switchgear 1 to be tested is provided with an upper flange 1-1 and a lower flange 1-2, and during an insulation test, an insulation test of positive and negative polarities between the upper flange 1-1 and the lower flange 1-2 (a switch is in a switching-off state) and an insulation test of the lower flange 1-2 to the ground are required. Because the ground clearance of the upper flange 1-1 and the lower flange 1-2 of the switch equipment 1 to be detected is generally 3350mm and 4750mm or more, and the test wiring is respectively connected to the upper flange 1-1 and the lower flange 1-2, a climbing ladder or a climbing vehicle is required to be equipped for climbing operation when manual wiring, positive and negative polarity wiring switching and wiring releasing after the test are generally adopted.
And because the test article is higher, stability is not good, difficult transportation, so during insulation test, the test article generally keeps the mounted position motionless. The distance between the test article and the test equipment is far during the insulation test, and the difficulty of manual wiring is increased. Meanwhile, because the insulation test of the test sample is a high-voltage test, in order to solve the contradiction between the product assembly and the insulation test safety, the two are usually operated in a staggered time mode, the product assembly operation is generally finished in the daytime, and the insulation test needs to be carried out at night after all assembly operators are cleared.
In addition, because the test needs manual discharge, in order to ensure the test safety, at least two testers need to be arranged, 1 person implements grounding, and the other 1 person implements monitoring, so as to ensure the operation safety.
In summary, the conventional insulation test operation method of the large-scale switchgear has the following disadvantages: firstly, the assembly and the test of the product need time-staggered operation, and the utilization rate of a field and test equipment is influenced; secondly, the insulation test of the switch equipment needs to be performed with multiple ascending operations, and potential safety hazards of personnel ascending operations exist; thirdly, the insulation test of each test article needs at least 2 times of manual discharge, and the risk of high-voltage electric shock of personnel who are carelessly discharged by the manual discharge exists; and fourthly, the work load of wire connection and disconnection is large (three phases and two positions are needed for connecting or disconnecting 6 wires during ascending each time), time and labor are wasted, and the work efficiency is lower.
Disclosure of Invention
The invention aims to provide an insulation test device of switchgear, which is used for realizing the movement of large-scale switchgear and automatic wiring, automatic wiring switching and automatic grounding discharge in the insulation detection process.
In order to achieve the purpose, the invention provides the following scheme:
an insulation test apparatus of a switchgear, the insulation test apparatus comprising: the device comprises a detection station, a skid, an automatic wiring switching device and a control system;
the switching equipment to be detected is arranged on the skid, and the skid is used for conveying the switching equipment to be detected to the detection station or moving the switching equipment to be detected away from the detection station;
the automatic wiring switching device comprises an upper connecting device, a lower connecting device, an upper connecting terminal, a lower connecting terminal, an upper switching device, a lower switching device, an upper contact knife, a lower contact knife, an upper low-voltage terminal, a high-voltage terminal and a lower low-voltage terminal;
one end of the upper connecting device is connected with the upper connecting terminal, one end of the lower connecting device is connected with the lower connecting terminal, control ends of the upper connecting device and the lower connecting device are connected with the control system, the control system is used for controlling the state of the upper connecting device, so that the other end of the upper connecting device is connected with the upper flange of the to-be-detected switch device, and controlling the state of the lower connecting device, so that the other end of the lower connecting device is connected with the lower flange of the to-be-detected switch device;
the upper switching device is fixedly connected to the upper connecting terminal, an output shaft of the upper switching device is connected with one end shaft of the upper contact knife, a control end of the upper switching device is connected with the control system, and the control system is used for controlling the upper switching device to drive the upper contact knife so that the other end of the upper contact knife is connected with the upper low-voltage terminal or the high-voltage terminal;
the lower switching device is fixedly connected to the lower connecting terminal, and an output shaft of the lower switching device is connected with one end shaft of the lower contact knife; the control end of the lower switching device is connected with the control system, and the control system is also used for controlling the lower switching device to drive the lower contact knife, so that the other end of the lower contact knife is connected with the high-voltage terminal or the lower low-voltage terminal;
the upper low-voltage terminal and the lower low-voltage terminal are connected in an equipotential manner through a conductive connecting pipe;
the high-voltage terminal is connected with the high-voltage output end of the insulation tester, and the lower low-voltage terminals are connected with the ground wire of the insulation tester.
Optionally, the automatic wiring switching device further comprises a base, three first hollow brackets, three second hollow brackets and three conductive connecting rods;
the three first hollow brackets and the three second hollow brackets are respectively arranged on the base;
the number of the upper connecting terminals is three, the number of the lower connecting terminals is three, the three upper connecting terminals are respectively arranged at the upper parts of the three first brackets, and the three lower connecting terminals are respectively arranged at the lower parts of the three first brackets;
the number of the upper low-voltage terminals, the number of the high-voltage terminals and the number of the lower low-voltage terminals are three, the three upper low-voltage terminals are respectively arranged at the upper parts of the three second hollow supports, the three high-voltage terminals are respectively arranged at the middle parts of the second hollow supports, and the three lower low-voltage terminals are respectively arranged at the lower parts of the second hollow supports;
the three conductive connecting rods are respectively connected with the three upper low-voltage terminals, the three high-voltage terminals and the three lower low-voltage terminals in an equipotential mode.
Optionally, the first hollow support sequentially comprises a first hollow insulating support and a second hollow insulating support from bottom to top, and the first hollow insulating support is fixed on the base;
the lower connecting terminal is arranged between the first hollow insulating support and the second hollow insulating support; and the upper connecting terminal is arranged at the upper end of the second hollow insulating support.
Optionally, the second hollow support from the bottom up includes hollow conductive support, the hollow insulating support of third and the hollow insulating support of fourth in proper order, hollow conductive support is fixed on the base, low voltage terminal sets up down hollow conductive support with between the hollow insulating support of third, high voltage terminal sets up the hollow insulating support of third with between the hollow insulating support of fourth, it is in to go up the low voltage terminal setting the upper end of the hollow insulating support of fourth.
Optionally, the upper connecting device includes an upper conductive arm and an upper conductive ejector rod, and the upper conductive ejector rod is of a cylinder structure or a gas spring structure;
go up the one end of electrically conductive arm with go up connecting terminal fixed connection, go up the other end of electrically conductive arm with the one end of going up electrically conductive ejector pin is connected, go up the control end of electrically conductive ejector pin with control system connects, control system is used for controlling go up electrically conductive ejector pin, make go up the other end of electrically conductive ejector pin with go up flange joint.
Optionally, the high-voltage terminal includes an upper contact connection structure, a lower contact connection structure, a conductive box, and a high-voltage connection terminal;
the upper contact connecting structure comprises a contact, an opening box, a contact spring and a cover plate;
the conductive box is a box body with openings at two ends, a three-phase connecting rod fixing device with semicircular end faces is arranged inside the conductive box, the three-phase connecting rod is fixedly arranged in the conductive box through the three-phase connecting rod fixing device, and the wiring terminal is fixed outside the conductive box and is electrically connected with the three-phase connecting rod through the conductive box;
the opening box is arranged at the upper part of the three-phase connecting rod, the opening direction of the opening box is upward, the cover plate is buckled at the upper part of the opening box, and the lower part of the cover plate and the upper part of the conductive box are fixedly connected with the opening box;
the contact spring is arranged in the opening box, one end of the contact spring is fixed on the lower bottom surface of the opening box, the other end of the contact spring is fixed on the lower surface of an annular baffle outside the contact, the part of the contact below the annular baffle is arranged in the contact spring, and the part of the contact above the annular baffle penetrates through a through hole arranged on the cover plate to expose the cover plate;
the lower contact connecting structure is the same as the upper contact connecting structure, and the lower contact connecting structure and the upper contact connecting structure are symmetrically arranged.
Optionally, the insulation test device further comprises a secondary connector;
the static end connector of the secondary connector is fixedly arranged on the skid, and the static end connector is connected with the secondary control end of the to-be-detected switch device; and a movable end connector of the secondary connector is fixedly arranged on one side of the detection station, the movable end connector is connected with the control system, and the control system is also used for controlling the on-off state of the to-be-detected switch equipment through the secondary connector.
Optionally, the secondary connector includes a movable end connector, a stationary end connector and a contact protection cover; the movable end connector comprises an air cylinder bracket, an air cylinder, a movable contact insulating seat plate, a plurality of movable connecting terminals, a plurality of first conductive supporting plates, a plurality of hinges, a plurality of second conductive supporting plates, a plurality of movable contact pressure springs and a plurality of movable contacts; the static end connector comprises a static contact insulating seat plate, a plurality of static contacts and a plurality of static wiring terminals;
the air cylinder bracket is fixed on one side of the detection station;
the cylinder is fixed on the cylinder bracket, an output shaft of the cylinder is fixedly connected with the moving contact insulating seat plate, and the cylinder is used for driving the moving contact insulating seat plate to move up and down;
the movable connecting terminals are respectively fixed on the upper surface of the movable contact insulating seat plate, the movable connecting terminals are electrically connected with the first conductive supporting plates, one ends of the first conductive supporting plates are respectively fixedly arranged on the lower surface of the movable contact insulating seat plate, the other ends of the first conductive supporting plates are respectively connected with one ends of the second conductive supporting plates through hinges, and the other ends of the second conductive supporting plates are respectively fixed with the movable contacts;
the plurality of moving contact springs are respectively arranged between the plurality of second conductive supporting plates and the plurality of moving contact insulating base plates;
the static contact insulation base plate is fixed on the skid, the plurality of static contact terminals are respectively arranged on the lower surface of the static contact insulation base plate, and the plurality of static contacts are respectively arranged on the upper surface of the static contact insulation base plate;
the plurality of movable wiring terminals are respectively connected with the control system;
the contact protection cover is arranged outside the static contact and the moving contact, a secondary aviation socket is arranged on the contact protection device, the static wiring terminals are connected with a plurality of pin holes of the secondary aviation socket through wires, and the secondary aviation plug is connected with a secondary control end of the switch device to be detected.
Optionally, a plurality of anti-tipping side plates are arranged on two sides of the detection station along the length direction;
the skids slide between the anti-tipping side plates on the two sides of the detection station.
Optionally, the anti-roll side plate comprises an anti-roll plate, a ball baffle, a plurality of guide balls and a plurality of ball springs;
the anti-tilting pressure plate comprises a first side plate and a second side plate, and one side of the first side plate is connected with one side of the second side plate at a right angle;
the other side of the first side plate is fixed on the side edge of the detection station; the second side plate is positioned above the skid;
the ball baffle is arranged between the second side plate and the station bottom plate, the ball baffle is parallel to the first side plate, a plurality of ball holes are formed in the ball baffle, and the diameter of each ball hole is smaller than that of each guide ball;
one ends of the ball springs are respectively fixed on the first side plate, and the other ends of the ball springs are respectively opposite to the ball holes;
the plurality of guide balls are respectively disposed between the plurality of ball holes and the plurality of ball springs.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
the invention discloses an insulation test device of switch equipment, which comprises: the device comprises a detection station, a skid, an automatic wiring switching device and a control system; the automatic wiring switching device is controlled by a control system, automatic switching of connection of an upper flange and a high-voltage terminal or an upper low-voltage terminal of the switch equipment to be detected is achieved, automatic switching of connection of a lower flange and the high-voltage terminal or the lower low-voltage terminal of the switch equipment to be detected is achieved, automatic wiring switching and automatic grounding discharging in an insulation detection process are achieved, time-staggered operation is not needed for assembly with the switch equipment to be detected, manual wiring is not needed, working efficiency is improved, personnel safety is guaranteed, and the technical defect that manual wiring is needed in an insulation experiment process of the existing large switch equipment to be detected is overcome.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
Fig. 1 is a front view of a structure of an insulation test apparatus of a switchgear provided in the present invention;
fig. 2 is a structural view of an anti-tilting side plate of an insulation test device of a switchgear according to the present invention;
fig. 3 is a left side view of the structure of an insulation test device of a switchgear provided in the present invention;
fig. 4 is a structural view of a secondary connector of an insulation testing apparatus of a switchgear according to the present invention;
fig. 5 is a structural view of a high voltage terminal of an insulation test device of a switchgear according to the present invention;
FIG. 6 is a structural diagram of the automatic wiring switching device during the insulation test of the upper flange according to the present invention;
fig. 7 is a structural diagram of the automatic wiring switching device when the upper flange provided by the invention is grounded and discharged.
Detailed Description
The invention aims to provide an insulation test device of switchgear, which is used for realizing the movement of large-scale switchgear to be detected and automatic wiring, automatic wiring switching and automatic grounding discharge in the insulation detection process.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
As shown in fig. 1, the present invention provides an insulation test apparatus of a switchgear, the insulation test apparatus including: the device comprises a skid 2, a test station 3, a secondary connector 4, an automatic wiring switching device 5 and a control system 6.
The testing station 3 is installed on the ground, the switch device 1 to be detected is installed on the skid 2 and is conveyed to the testing station 3 from the assembling station (or other stations) through the skid 2, after the test station is conveyed in place, the secondary control end of the switch device 1 to be detected is effectively connected with the control system 6 through the secondary connector 4, and the automatic opening and closing operation of the switch device 1 to be detected is achieved through the control system 6. The automatic wiring, the automatic positive and negative polarity wiring switching and the automatic grounding of the upper flange 1-1 and the lower flange 1-2 of the switch device 1 to be detected are realized through the automatic wiring switching device 5.
The switching device 1 to be tested together with the sledge 2 has a height of approximately 5000mm, whereas the width of the base of the sledge 2 is approximately 1000mm, which is inherently less stable.
Fig. 2 shows the overturn-preventing matching details of the skid 2 and the test station 3, wherein a plurality of overturn-preventing side plates are arranged on both sides of the test station 3 along the length direction, each overturn-preventing side plate comprises an overturn-preventing side plate 3-1, each overturn-preventing side plate 3-1 comprises a first side plate and a second side plate, and one side of each first side plate is connected with one side of each second side plate at a right angle; the other side of the first side plate is fixed on the side edge of the detection station; the second side plate is located above the skid, and can effectively prevent the switch device 1 to be detected and the skid 2 from overturning. The inner side of the anti-tilting pressure plate 3-1 is provided with a guide ball 3-2, a ball top spring 3-3 and a ball baffle 3-4, when the switch device 1 to be detected and the skid 2 are conveyed into (or out of) the test station module 3, the effective guide-in/guide-out of the skid 2 is realized through the guide ball 3-2, and meanwhile, the transmission resistance is reduced. The ball head spring 3-3 mainly provides an effective rolling contact force of the guide ball 3-2, and the ball retainer 3-4 functions to support the guide ball 3-2.
Fig. 3 is a left side view of the structure of an insulation testing device of a switchgear, showing the arrangement position of a secondary connector in the insulation testing device, and fig. 4 is a structural view of the secondary connector. As shown in fig. 3 and 4, the secondary connector comprises a movable end connector, a static end connector and a contact protection cover; the moving end connector is provided with an air cylinder support 4-1, an air cylinder 4-2 is fixed on the air cylinder support 4-1, the output end of the air cylinder 4-2 is connected with a moving contact insulating seat plate 4-7, and a plurality of moving contacts 4-9 are arranged on the moving contact insulating seat plate 4-7 through a plurality of first conductive support plates, a plurality of second conductive support plates, a plurality of hinges 4-10 and a plurality of moving contact pressure springs 4-8. On the other side of the moving contact insulation seat plate 4-7, a moving connecting terminal 4-5 is arranged at the corresponding position of each moving contact 4-9, and the moving connecting terminals and the moving contact are in equipotential connection.
The static end connector comprises a static contact insulating seat plate 4-12, a plurality of static contacts 4-11 and a plurality of static wiring terminals 4-13; the skid 2 is provided with a static contact insulation base plate 4-12, a plurality of static contacts 4-11 are arranged on the upper side of the static contact insulation base plate 4-12, a static connecting terminal 4-13 is arranged at the lower side of the static contact insulation base plate 4-12 and at the corresponding position of each static contact 4-11, and the static contacts and the static connecting terminal are connected in an equipotential manner. Contact protection covers 4-3 are arranged outside the moving and static contacts, the contact protection covers 4-3 are fixed on the skids 2 and are provided with secondary aviation sockets 4-4, and a plurality of pin holes on the secondary aviation sockets 4-4 are respectively and effectively electrically connected with a plurality of static wiring terminals 4-13 through connecting wires 4-6.
The output of an electric contact of the movable wiring terminal 4-5 is connected with the control system 6, each electric contact of the secondary aviation socket 4-4 is effectively connected with a secondary aviation plug of a secondary control end of the switch device 1 to be detected, the control system 6 can control the secondary aviation socket to drive the cylinder 4-2 to act, the automatic closing or separation of a movable contact 4-9 and a fixed contact 4-11 of the secondary connector is realized, and the control system 6 operates to realize the automatic opening and closing of the switch device 1 to be detected. The moving contact pressure spring 4-8 plays a role in providing an electric contact force when the moving contact 4-9 and the static contact 4-11 are closed.
Fig. 6 and 7 show the structure of the automatic wiring switching device 5, and fig. 6 shows a state where the upper flange 1-1 is connected to a high voltage and the lower flange 1-2 is connected to a low voltage; fig. 7 shows a state where the upper flange 1-1 is connected to a low voltage and the lower flange 1-2 is connected to a high voltage after the switching operation of the wiring.
The automatic wiring switching device 5 is provided with bases 5-6, and the bases 5-6 are effectively fixed on the ground. Three first hollow insulating supports 5-3 and three hollow conductive supports 5-7 (corresponding to A, B, C three phases respectively) are respectively arranged on the bases 5-6. The structure of the upper connecting device is the same as that of the lower connecting device, the upper connecting device comprises an upper conductive arm and an upper conductive ejector rod, and the lower connecting device comprises a lower conductive arm and a lower conductive ejector rod.
The upper part of each first hollow insulating support 5-3 is provided with a lower operating box 5-4, the lower operating box comprises a lower switching device and a lower connecting terminal, the upper end of the lower operating box 5-4 is provided with a second hollow insulating support 5-16, the upper part of the second hollow insulating support 5-16 is provided with an upper operating box 5-17, and the upper operating box comprises a lower switching device and a lower connecting terminal.
The upper part of each hollow conductive support 5-7 is provided with a lower low-voltage terminal 5-8, the upper end of each lower low-voltage terminal 5-8 is provided with a third hollow insulating support 5-10, the upper part of each third hollow insulating support 5-10 is provided with a high-voltage terminal 5-11, the upper end of each high-voltage terminal 5-11 is provided with a fourth hollow insulating support 5-13, the upper part of each fourth hollow insulating support 5-13 is provided with an upper low-voltage terminal 5-14, and the upper low-voltage terminal 5-14 and the lower low-voltage terminal 5-8 of each phase are connected in an equipotential mode through a conductive connecting pipe 5-9. The conductive connecting pipe is a U-shaped conductive connecting pipe.
The right side of the upper operation box 5-17 (comprising a lower switching device and a lower connecting terminal) is connected with an upper contact knife 5-15, and the right side of the lower operation box 5-4 is connected with a lower contact knife 5-5. The left side of the upper operation box 5-17 is provided with an upper conductive arm 5-18, the left side of the lower operation box 5-4 is provided with a lower conductive arm 5-2, and the left end parts of the upper conductive arm 5-18 and the lower conductive arm 5-2 are correspondingly provided with an upper conductive mandril 5-19 and a lower conductive mandril 5-1.
The upper and lower switching devices may be driving motors.
The three-phase high-voltage terminals 5-11 are connected in an equipotential mode through three-phase conductive connecting rods 5-12, and the three-phase lower low-voltage terminals 5-8 and the three-phase upper low-voltage terminals 5-14 are connected in an equipotential mode through the same scheme.
The upper conductive ejector rod 5-19 is of a cylinder (or similar gas spring) structure, the to-be-detected switch device 1 is in a contraction state before being in place, and after the to-be-detected switch device 1 is in place, the front end of the upper conductive ejector rod 5-19 is ejected out to be in effective conductive contact with the upper flange 1-1 through control. The same applies to the lower conductive post rod 5-1.
The position state switching of the upper contact knife 5-15 and the lower contact knife 5-5 can be realized by controlling the operation box, so that the high-low voltage wiring switching of the upper flange 1-1 and the lower flange 1-2 is realized.
Taking the state of fig. 6 as an example, in the insulation test in this state, the upper flange 1-1 is a high-voltage charged body, after the test is finished, the upper flange 1-1 is charged with residual high-voltage charges, and the upper control box 5-17 is controlled by the background control system 6 to drive the upper contact knife 5-15 to rotate to the upper low-voltage terminal 5-14, so that automatic grounding is realized, and the residual high-voltage charges of the upper flange 1-1 (and the conductive connecting member thereof) are discharged.
In addition, the control system 6 and the door of the test control room are provided with reliable interlocking, and after an insulation test, the door of the test control room cannot be opened under the condition that the high-voltage part of the test system is not effectively grounded, so that the safety of a tester is ensured.
The upper low voltage terminal, the lower low voltage terminal and the high voltage terminal of the invention have the same structure.
Fig. 5 further shows the electrical connection structure of the upper contact blades 5-15 and the high voltage terminals 5-11.
The high-voltage terminal 5-11 of the double-contact structure comprises an upper contact connecting structure, a lower contact connecting structure, a conductive box 5-11-5 and a high-voltage wiring terminal 5-11-6; the upper contact connecting structure comprises a contact 5-11-1, an opening box 5-11-3, a contact spring 5-11-4 and a cover plate 5-11-2; the outer side of the metal conductive box 5-11-5 is provided with a high-voltage wiring terminal 5-11-6, the upper end of the conductive box 5-11-5 is provided with a metal opening box 5-11-3, a contact spring 5-11-4 and a contact 5-11-1 are arranged in the opening box 5-11-3, and a cover plate 5-11-2 is covered outside.
The high-voltage terminal 5-11-6 is connected with a high-voltage output end of the insulation test equipment, and when the contact knife 5-15 is operated to reach the high-voltage terminal 5-11, the high-voltage terminal is contacted with the contact 5-11-1 and realizes contact force for effective electric connection through the compression of the contact spring 5-11-4.
The lower part of the high-voltage terminal 5-11 is provided with a symmetrical structure (a lower contact connection structure), and corresponding electric contact can be realized when the lower contact knife 5-5 strikes the high-voltage terminal 5-11.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
according to the technical scheme, the large-scale switch equipment to be detected is connected through the background control system, so that the automatic wiring, automatic wiring switching and automatic grounding of the insulation test of the large-scale switch equipment to be detected can be conveniently realized, the test operation efficiency is effectively improved, and the test operation safety is guaranteed.
The device can also be used for other wire connection test projects needing ascending height of large-scale electrical equipment.
The embodiments in the present specification are described in a progressive manner, each embodiment is different from the other embodiments in terms of description of the terminals, and the same and similar parts among the embodiments can be referred to each other.
The principle and the implementation manner of the present invention are explained by applying specific examples, the above description of the embodiments is only used to help understanding the method of the present invention and the core idea thereof, the described embodiments are only a part of the embodiments of the present invention, not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the protection scope of the present invention.
Claims (9)
1. An insulation test device of a switchgear, characterized in that the insulation test device comprises: the device comprises a detection station, a skid, an automatic wiring switching device and a control system;
the switching equipment to be detected is arranged on the skid, and the skid is used for conveying the switching equipment to be detected to the detection station or moving the switching equipment to be detected away from the detection station;
the automatic wiring switching device comprises an upper connecting device, a lower connecting device, an upper connecting terminal, a lower connecting terminal, an upper switching device, a lower switching device, an upper contact knife, a lower contact knife, an upper low-voltage terminal, a high-voltage terminal and a lower low-voltage terminal;
one end of the upper connecting device is connected with the upper connecting terminal, one end of the lower connecting device is connected with the lower connecting terminal, control ends of the upper connecting device and the lower connecting device are connected with the control system, the control system is used for controlling the state of the upper connecting device, so that the other end of the upper connecting device is connected with the upper flange of the to-be-detected switch device, and controlling the state of the lower connecting device, so that the other end of the lower connecting device is connected with the lower flange of the to-be-detected switch device;
the upper switching device is fixedly connected to the upper connecting terminal, an output shaft of the upper switching device is connected with one end shaft of the upper contact knife, a control end of the upper switching device is connected with the control system, and the control system is used for controlling the upper switching device to drive the upper contact knife so that the other end of the upper contact knife is connected with the upper low-voltage terminal or the high-voltage terminal;
the lower switching device is fixedly connected to the lower connecting terminal, and an output shaft of the lower switching device is connected with one end shaft of the lower contact knife; the control end of the lower switching device is connected with the control system, and the control system is also used for controlling the lower switching device to drive the lower contact knife, so that the other end of the lower contact knife is connected with the high-voltage terminal or the lower low-voltage terminal;
the upper low-voltage terminal and the lower low-voltage terminal are connected in an equipotential manner through a conductive connecting pipe;
the high-voltage terminal is connected with the high-voltage output end of the insulation tester, and the lower low-voltage terminals are connected with the ground wire of the insulation tester;
the upper connecting device comprises an upper conductive arm and an upper conductive ejector rod, and the upper conductive ejector rod is of an air cylinder structure or an air spring structure; go up the one end of electrically conductive arm with go up connecting terminal fixed connection, go up the other end of electrically conductive arm with the one end of going up electrically conductive ejector pin is connected, go up the control end of electrically conductive ejector pin with control system connects, control system is used for controlling go up electrically conductive ejector pin, make go up the other end of electrically conductive ejector pin with go up flange joint.
2. The insulation test device of switchgear as claimed in claim 1, wherein said automatic wiring switching device further comprises a base, three first hollow brackets, three second hollow brackets and three conductive connecting rods;
the three first hollow brackets and the three second hollow brackets are respectively arranged on the base;
the number of the upper connecting terminals is three, the number of the lower connecting terminals is three, the three upper connecting terminals are respectively arranged at the upper parts of the three first hollow brackets, and the three lower connecting terminals are respectively arranged at the lower parts of the three first hollow brackets;
the number of the upper low-voltage terminals, the number of the high-voltage terminals and the number of the lower low-voltage terminals are three, the three upper low-voltage terminals are respectively arranged at the upper parts of the three second hollow supports, the three high-voltage terminals are respectively arranged at the middle parts of the second hollow supports, and the three lower low-voltage terminals are respectively arranged at the lower parts of the second hollow supports;
the three conductive connecting rods are respectively connected with the three upper low-voltage terminals, the three high-voltage terminals and the three lower low-voltage terminals in an equipotential mode.
3. The insulation test device of the switchgear as claimed in claim 2, wherein the first hollow bracket comprises a first hollow insulating bracket and a second hollow insulating bracket in sequence from bottom to top, and the first hollow insulating bracket is fixed on the base;
the lower connecting terminal is arranged between the first hollow insulating support and the second hollow insulating support; and the upper connecting terminal is arranged at the upper end of the second hollow insulating support.
4. The insulation test device of the switch equipment according to claim 2, wherein the second hollow bracket comprises a hollow conductive bracket, a third hollow insulating bracket and a fourth hollow insulating bracket in sequence from bottom to top, the hollow conductive bracket is fixed on the base, the lower low-voltage terminal is arranged between the hollow conductive bracket and the third hollow insulating bracket, the high-voltage terminal is arranged between the third hollow insulating bracket and the fourth hollow insulating bracket, and the upper low-voltage terminal is arranged at the upper end of the fourth hollow insulating bracket.
5. The insulation test device of a switchgear as claimed in any of claims 1 to 4, wherein the high voltage terminal comprises an upper contact connection structure, a lower contact connection structure, a conductive box and a high voltage connection terminal;
the upper contact connecting structure comprises a contact, an opening box, a contact spring and a cover plate;
the conductive box is a box body with openings at two ends, a three-phase connecting rod fixing device with semicircular end faces is arranged inside the conductive box, a three-phase connecting rod is fixedly arranged in the conductive box through the three-phase connecting rod fixing device, and the high-voltage wiring terminal is fixed outside the conductive box and is electrically connected with the three-phase connecting rod through the conductive box;
the opening box is arranged at the upper part of the three-phase connecting rod, the opening direction of the opening box is upward, the cover plate is buckled at the upper part of the opening box, and the lower part of the cover plate and the upper part of the conductive box are fixedly connected with the opening box;
the contact spring is arranged in the opening box, one end of the contact spring is fixed on the lower bottom surface of the opening box, the other end of the contact spring is fixed on the lower surface of an annular baffle outside the contact, the part of the contact below the annular baffle is arranged in the contact spring, and the part of the contact above the annular baffle penetrates through a through hole arranged on the cover plate to expose the cover plate;
the lower contact connecting structure is the same as the upper contact connecting structure, and the lower contact connecting structure and the upper contact connecting structure are symmetrically arranged.
6. The insulation test apparatus of a switchgear according to claim 1, wherein the insulation test apparatus further comprises a secondary connector;
the static end connector of the secondary connector is fixedly arranged on the skid, and the static end connector is connected with the secondary control end of the to-be-detected switch device; and a movable end connector of the secondary connector is fixedly arranged on one side of the detection station, the movable end connector is connected with the control system, and the control system is also used for controlling the on-off state of the to-be-detected switch equipment through the secondary connector.
7. The insulation test device of switchgear as claimed in claim 6, wherein the secondary connector comprises a moving end connector, a static end connector and a contact protection cap; the movable end connector comprises an air cylinder bracket, an air cylinder, a movable contact insulating seat plate, a plurality of movable connecting terminals, a plurality of first conductive supporting plates, a plurality of hinges, a plurality of second conductive supporting plates, a plurality of movable contact pressure springs and a plurality of movable contacts; the static end connector comprises a static contact insulating seat plate, a plurality of static contacts and a plurality of static wiring terminals;
the air cylinder bracket is fixed on one side of the detection station;
the cylinder is fixed on the cylinder bracket, an output shaft of the cylinder is fixedly connected with the moving contact insulating seat plate, and the cylinder is used for driving the moving contact insulating seat plate to move up and down;
the movable connecting terminals are respectively fixed on the upper surface of the movable contact insulating seat plate, the movable connecting terminals are electrically connected with the first conductive supporting plates, one ends of the first conductive supporting plates are respectively fixedly arranged on the lower surface of the movable contact insulating seat plate, the other ends of the first conductive supporting plates are respectively connected with one ends of the second conductive supporting plates through hinges, and the other ends of the second conductive supporting plates are respectively fixed with the movable contacts;
the plurality of moving contact pressure springs are respectively arranged between the plurality of second conductive supporting plates and the plurality of moving contact insulating base plates;
the static contact insulation base plate is fixed on the skid, the plurality of static contact terminals are respectively arranged on the lower surface of the static contact insulation base plate, and the plurality of static contacts are respectively arranged on the upper surface of the static contact insulation base plate;
the plurality of movable wiring terminals are respectively connected with the control system;
the contact protection cover is arranged outside the static contact and the moving contact, a secondary aviation socket is arranged on the contact protection cover, the static wiring terminals are connected with a plurality of pin holes of the secondary aviation socket through wires, and the secondary aviation plug is connected with a secondary control end of the switch device to be detected.
8. The insulation test device of the switchgear as claimed in claim 1, wherein a plurality of anti-tipping side plates are provided on both sides of the detection station along a length direction;
the skids slide between the anti-tipping side plates on the two sides of the detection station.
9. The insulation test apparatus of a switchgear as claimed in claim 8, wherein the anti-roll side plate comprises an anti-roll plate, a ball baffle, a plurality of guide balls, and a plurality of ball springs;
the anti-tilting pressure plate comprises a first side plate and a second side plate, and one side of the first side plate is connected with one side of the second side plate at a right angle;
the other side of the first side plate is fixed on the side edge of the detection station; the second side plate is positioned above the skid;
the ball baffle is arranged between the second side plate and the station bottom plate, the ball baffle is parallel to the first side plate, a plurality of ball holes are formed in the ball baffle, and the diameter of each ball hole is smaller than that of each guide ball;
one ends of the ball springs are respectively fixed on the first side plate, and the other ends of the ball springs are respectively opposite to the ball holes;
the plurality of guide balls are respectively disposed between the plurality of ball holes and the plurality of ball springs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910879679.9A CN110501636B (en) | 2019-09-18 | 2019-09-18 | Insulation test device of switch equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910879679.9A CN110501636B (en) | 2019-09-18 | 2019-09-18 | Insulation test device of switch equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110501636A CN110501636A (en) | 2019-11-26 |
| CN110501636B true CN110501636B (en) | 2021-08-06 |
Family
ID=68592114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910879679.9A Active CN110501636B (en) | 2019-09-18 | 2019-09-18 | Insulation test device of switch equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110501636B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112129507A (en) * | 2020-09-23 | 2020-12-25 | 中航宝胜电气股份有限公司 | Automatic testing device and testing method for mechanical characteristics and loop resistance of switch equipment |
| CN113394033A (en) * | 2021-06-15 | 2021-09-14 | 中航宝胜电气股份有限公司 | Automatic running-in system and method for power transmission grade high-voltage vacuum circuit breaker |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101807758B (en) * | 2010-04-13 | 2012-11-14 | 河北工业大学 | Test electric connector of low voltage breaker |
| CN204101682U (en) * | 2014-10-10 | 2015-01-14 | 中骏电气（厦门）有限公司 | Vacuum circuit breaker pressure resistant testing device |
| CN204967077U (en) * | 2015-08-16 | 2016-01-13 | 宋国民 | High tension switchgear's insulator spindle |
| CN105182012A (en) * | 2015-08-24 | 2015-12-23 | 国网湖南省电力公司带电作业中心 | Distribution test method and wiring device |
| CN106584269A (en) * | 2015-10-13 | 2017-04-26 | 龚福鑫 | Multi-track slippage platform |
| CN207123596U (en) * | 2017-03-29 | 2018-03-20 | 福建骐航实业有限公司 | A kind of fuse detection means |
| CN107765044B (en) * | 2017-11-03 | 2023-09-26 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Change-over transformer temperature rise test is with change-over switch device |
| CN107797058A (en) * | 2017-11-27 | 2018-03-13 | 湖南长高成套电器有限公司 | A kind of breaker detects test system eventually |
| CN108037450A (en) * | 2018-01-03 | 2018-05-15 | 广西电网有限责任公司电力科学研究院 | A kind of high-voltage circuitbreaker automatic detection device and detection method |
| CN109061458B (en) * | 2018-08-28 | 2024-07-02 | 杭州杰涵机械科技有限公司 | Automatic detection device for secondary circuit of circuit breaker and operation method of automatic detection device |
| CN209387699U (en) * | 2018-12-18 | 2019-09-13 | 国网安徽省电力有限公司宣城供电公司 | A kind of wheelbarrow switch Insulation Test auxiliary device of automation |
-
2019
- 2019-09-18 CN CN201910879679.9A patent/CN110501636B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN110501636A (en) | 2019-11-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110501636B (en) | Insulation test device of switch equipment | |
| CN105392658B (en) | Vehicle charging connector | |
| CN110854739B (en) | Overhead transmission line electricity testing grounding method based on unmanned aerial vehicle | |
| CN108828415B (en) | GIS equipment, cable terminal connecting device for GIS and voltage withstand test method of cable terminal connecting device | |
| KR101562258B1 (en) | Disconnecting switch of gas insulation switching system | |
| KR101545202B1 (en) | Disconnecting switch of gas insulation switching system | |
| CN112129507A (en) | Automatic testing device and testing method for mechanical characteristics and loop resistance of switch equipment | |
| CN109254243A (en) | A kind of high-voltage circuitbreaker test short jumper device | |
| CN202119856U (en) | Simulation test apparatus for overhead high voltage circuit grounding short circuit fault | |
| CN107482329B (en) | A kind of easily ground line operating platform | |
| CN107284488B (en) | Test trolley with pole setting function | |
| CN203895397U (en) | Solid insulation fuse | |
| CN216979240U (en) | Withstand voltage test equipment | |
| CN110275057A (en) | A kind of non-contact type high voltage DC power transmission line electroscopic device and electricity-testing method | |
| CN107672475A (en) | Charge connector, charging device and external member and charging method | |
| CN213986696U (en) | Automatic discharge safety grounding device for high-capacity direct-current voltage withstand test platform | |
| CN209148844U (en) | A kind of high-voltage circuitbreaker test short jumper device | |
| CN211294758U (en) | Overvoltage protection lightning protection post insulator | |
| CN103996579B (en) | For the slidingtype switching device shifter of low-voltage circuit breaker main electrical scheme short circuit preliminary examination | |
| CN113381330A (en) | Electric shock prevention device for maintenance of middle handcart type switch cabinet circuit breaker compartment | |
| CN205194450U (en) | Circuit cross arm insulator of taking shelter from thunder | |
| CN216268719U (en) | Fill automatic butt joint that charges of electric pile | |
| CN111934232A (en) | Vehicle-mounted movable transformer substation | |
| CN210467671U (en) | Operating mechanism box for single-grounding high-voltage isolating switch | |
| CN106019022B (en) | Cover plate test device for connecting gas chamber between oil-gas type transformer and GIS and operation method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |