Device and method for manual segmentation and reconnection in reconstruction and extension stage of suspension type tubular busbar

Abstract

The invention provides a manual segmentation and reconnection device and method for a reconstruction and extension stage of a suspension type tubular busbar. The manual segmentation and reconnection device comprises a suspension assembly, a segmentation assembly and a reconnection assembly, wherein the suspension assembly comprises a tubular busbar suspension arm suspended below a cross beam, a wire hanging fitting and a suspension wire clamp; the segmentation assembly comprises two metal end sealing balls installed at the end of the segmented tubular bus, the minimum distance between the two balls is larger than the relative electrical distance of the rated voltage of the bus, and it is guaranteed that one section of bus runs, the other section of bus is reliably and safely grounded, and connected electrical equipment works safely; the reconnection assembly comprises two jumper wire devices arranged at the end part of the segmented tubular bus, and a jumper wire is connected between the jumper wire devices; and long-term operation of the reconnected tubular bus is ensured. Manual segmentation of the tubular bus is realized so as to realize finer-grained power failure operation of a power grid, and influence of reconstruction and expansion on operation of the power grid is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of suspension type busbar processing of electrical equipment, and particularly relates to a suspension type busbar artificial segmentation and reconnection device and method in the expansion and reconstruction stage. BACKGROUND

[0002] The suspension type busbar is applied to 3 / 2 busbar connection power distribution areas of 500 kV and above and double busbar connection or double busbar double segmentation power distribution areas of 220 kV and above. These equipment areas are usually connected to 8 to 16 lines and 2 to 4 main transformers. The number of outgoing lines and main transformer incoming lines connected to each busbar is large, and the collected power is large.

[0003] The expansion and reconstruction operation usually adopts a method of carrying out partial power-off expansion and reconstruction or maintenance work on one busbar, and then carrying out partial power-off expansion and reconstruction or maintenance work on the second busbar. This conventional method needs to carry out replacement, reconstruction, maintenance and expansion operation on the two busbars of 3 / 2 connection or double busbar connection multiple times by rotating power-off. The number of power-off and power-on of the equipment is large and the situation is complex. The equipment hoisting is generally close to the live body operation, which is high-risk and dangerous, and the operation cycle is long, which is not conducive to reducing the number of power-off and shortening the operation time. Artificial segmentation of the busbar in the expansion and reconstruction stage is beneficial to dividing the equipment area into different areas for power-off operation and reducing the live operation. Or reduce the power-off range and reduce the impact on the power grid. The artificial segmentation and reconnection device of the suspension type busbar in the expansion and reconstruction stage is needed to better support the segmentation and reconnection of the busbar. SUMMARY

[0004] In order to solve the above technical problems or at least partially solve the above technical problems, the present application provides a suspension type busbar artificial segmentation and reconnection device and method in the expansion and reconstruction stage.

[0005] In the first aspect, the present application provides a suspension type busbar artificial segmentation and reconnection device in the expansion and reconstruction stage, comprising: A suspension assembly, a segmentation assembly and a reconnection assembly arranged at the position of the artificial segmentation of the suspension type busbar; The suspension assembly comprises four groups of busbar hangers arranged on the cross beam. Two busbar hangers on one side of the cross beam are connected to a group of wire hanging fittings in a V-shaped inclination, the wire hanging fittings are connected to a suspension wire clamp, the wire hanging fittings are also connected to a shielding and grading ring, and the suspension wire clamp clamps the suspension type busbar. The other two busbar hangers on one side of the cross beam are also connected to another group of wire hanging fittings in a V-shaped inclination, the other group of wire hanging fittings is connected to another suspension wire clamp, and the other group of wire hanging fittings is also connected to a shielding and grading ring. The suspension wire clamp also clamps the suspension type busbar. The segment assembly comprises metal end sealing balls which are detachably arranged at the end of the tubular busbar, when the two metal end sealing balls are arranged at the cut end of the tubular busbar, the minimum distance between the two balls is greater than the relative ground electrical distance of the rated voltage of the busbar, so that one segment of the busbar is in operation and the other segment of the busbar is reliably and safely grounded, and the connected electrical equipment is safely operated. The reconnection assembly comprises two jumper devices which are arranged at the end of the segmented tubular busbar, and the jumper devices are connected by a jumper wire, so that the long-term operation of the reconnected tubular busbar is ensured.

[0006] Further, the tubular busbar hanging arm comprises a basket bolt and an insulator string, wherein one end of the basket bolt is movably connected to the cross beam through a hanging ring, the other end of the basket bolt is movably connected to the insulator string through a hanging ring, and the end of the insulator string is movably connected to the wire hanging fitting.

[0007] Further, the shielding grading ring is connected by n type grading segments.

[0008] Further, the suspension wire clamp comprises an upper clamp plate and a lower clamp plate, and a connecting bolt between the upper clamp plate and the lower clamp plate; The top of the upper clamp plate is provided with a hinged seat which is hinged to the wire hanging fitting; the wire hanging fitting comprises a connecting plate, a right-angle hanging plate and a parallel hanging plate which are connected from top to bottom, one end of the parallel hanging plate is hinged to the hinged seat of the upper clamp plate, the other end of the parallel hanging plate is hinged to the right-angle hanging plate, the right-angle hanging plate is hinged to the connecting plate, the top of the connecting plate is movably connected to the insulator string at both ends, and the connecting plate is also connected to the shielding grading ring.

[0009] Further, a plurality of jumper wires are arranged between the ends of the tubular busbar, and split interval rods are arranged between the plurality of jumper wires; and the lengths of the jumper wires are consistent, so that the radii are consistent.

[0010] In the second aspect, the present application provides a method for manually segmenting and reconnecting a suspended tubular busbar in a reconstruction and expansion stage, which applies the suspended tubular busbar reconstruction and expansion stage manual segmentation and reconnection device, and comprises the following steps: In the segmentation process, the target suspended tubular busbar to be manually segmented is powered off, the target suspended tubular busbar to be manually segmented is safely grounded, the suspension assembly is arranged at the position of the target suspended tubular busbar to be manually segmented, the target suspended tubular busbar is cut to ensure that, when the metal end sealing balls are arranged, the minimum distance between the two balls is greater than the relative ground electrical distance of the rated voltage of the busbar, so that one segment of the busbar is in operation and the other segment of the busbar is reliably and safely grounded, and the connected electrical equipment is safely operated, after the target suspended tubular busbar is cut, the cut port is smoothed, burrs are removed, and metal end sealing balls are arranged at the two cut ports of the target suspended tubular busbar; the safety grounding of the suspended tubular busbar segment is released according to the requirement, the power is restored, and the other segment continues to be powered off to carry out the operation. In the reconnection process, the target suspended tubular busbar to be reconnected is powered off, and the target suspended tubular busbar to be reconnected is safely grounded; the metal end sealing ball at the two ports of the target suspended tubular busbar is removed and replaced with a reconnection assembly; the safe grounding of the target suspended tubular busbar is removed, and the target suspended tubular busbar after reconnection is restored to be powered.

[0011] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art: The present application supports segmenting and reconnecting the tubular busbar, and in the expansion or maintenance process, a more fine-grained device area power-off is provided through the segmentation and reconnection of the tubular busbar, so that expansion, maintenance, repair and reconstruction can be carried out at a lower cost.

[0012] In the suspension assembly of the present application, the four groups of tubular busbar hangers are inclined and hoisted in a V shape to ensure the stability of the segmented tubular busbar; the shielding grading ring and the metal end sealing ball optimize the electric field distribution and avoid the occurrence of sharp end discharge. BRIEF DESCRIPTION OF DRAWINGS

[0013] The accompanying drawings, which are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present application and, together with the specification, serve to explain the principles of the present application.

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description, and obviously, other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0015] Figure 1 is a top view schematic diagram of the artificial segmentation and reconnection device in the expansion and reconstruction stage of the suspended tubular busbar before artificial segmentation provided by the embodiment of the present application; Figure 2 is a side view schematic diagram of the artificial segmentation and reconnection device in the expansion and reconstruction stage of the suspended tubular busbar before artificial segmentation provided by the embodiment of the present application; Figure 3 is a top view schematic diagram of the artificial segmentation and reconnection device in the expansion and reconstruction stage of the suspended tubular busbar after artificial segmentation provided by the embodiment of the present application; Figure 4 is a side view schematic diagram of the artificial segmentation and reconnection device in the expansion and reconstruction stage of the suspended tubular busbar after reconnection provided by the embodiment of the present application; Figure 5 is a schematic diagram of the artificial segmentation and reconnection device in the expansion and reconstruction stage of the suspended tubular busbar provided by the embodiment of the present application; Figure 6 is a 3 / 2 wiring electrical main wiring diagram before artificial segmentation provided by the embodiment 1 of the present application; Figure 7 This is the 3 / 2 wiring diagram of the main electrical wiring before manual segmentation provided in Embodiment 1 of the present invention; Figure 8 This is the electrical main wiring diagram of the double busbar after manual segmentation provided in Embodiment 2 of the present invention; Figure 9 This is the electrical main wiring diagram of the double busbar after manual segmentation provided in Embodiment 2 of the present invention; Figure 10 This is a flowchart of the manual segmentation and reconnection method for the renovation and expansion stage of the suspended tubular busbar provided in the embodiments of the present invention.

[0016] The labels and their meanings in the diagram are as follows: 1. Parallel hanging plate, 2. Turnbuckle, 3. Insulator string, 4. Shielding equalizing ring, 5. Suspension clamp, 6. Metal end cap ball, 7. Jumper device, 8. Jumper, 9. Connecting plate, 10. Right angle hanging plate. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0019] Example 1 This invention provides a manual segmentation and reconnection device for suspended tubular busbars during renovation and expansion. It is applied during the renovation, maintenance, repair, and expansion of lines associated with the suspended tubular busbar to manually segment the busbar; after the renovation, maintenance, repair, and expansion of the associated lines, the device reconnects the manually segmented sections of the suspended tubular busbar. The device includes: The wiring mode of the connection between the first and second suspension tubular busbars, which respectively powers off the first and second suspension tubular busbars during segmentation or reconnection, and supports independent power-off and live of each suspension tubular busbar segment after segmentation. For the embodiment 1, the wiring mode includes: As shown in Figure 6 and Figure 7 , the wiring mode bus wiring mode includes: a plurality of circuit breaker strings, each circuit breaker string including three left, middle and right circuit breakers connected in series, wherein the left or right circuit breaker can be empty; disconnectors are arranged at both ends of the left, middle and right circuit breakers; the wiring mode connects two main transformers and a plurality of lines; the main transformer or line is connected to the conductor between the middle and left circuit breakers or the conductor between the middle and right circuit breakers.

[0020] As shown in Figure 3 , the 500kV I and 500kV II suspension tubular busbars of the 500kV substation are respectively the first and second suspension tubular busbars. The circuit breaker strings between the first and second suspension tubular busbars are respectively called first, second, third, fourth and fifth circuit breaker strings from bottom to top, wherein the first circuit breaker string includes left circuit breaker 5011, middle circuit breaker 5012 and right circuit breaker 5013, the second circuit breaker string includes left circuit breaker 5021, middle circuit breaker 5022 and right circuit breaker 5023, the third circuit breaker string includes left circuit breaker 5031, middle circuit breaker 5032 and right circuit breaker 5033, the fourth circuit breaker string includes left circuit breaker 5041, middle circuit breaker 5042 and right circuit breaker 5043, and the fifth circuit breaker string includes left circuit breaker 5051, middle circuit breaker 5052 and right circuit breaker 5053.

[0021] The line one is connected to the line between the left circuit breaker 5011 and the middle circuit breaker 5012, and the line five is connected to the line between the middle circuit breaker 5012 and the right circuit breaker 5013; the 1# main transformer is connected to the line between the left circuit breaker 5021 and the middle circuit breaker 5022, and the line six is connected to the line between the middle circuit breaker 5022 and the right circuit breaker 5023; the line two is connected to the line between the left circuit breaker 5031 and the middle circuit breaker 5032, and the 2# main transformer is connected to the line between the middle circuit breaker 5032 and the right circuit breaker 5033; the line three is connected to the line between the left circuit breaker 5041 and the middle circuit breaker 5042, and the line seven is arranged on the line between the middle circuit breaker 5042 and the right circuit breaker 5043; the line four is connected to the line between the left circuit breaker 5051 and the middle circuit breaker 5052, and the line eight is connected to the line between the middle circuit breaker 5052 and the right circuit breaker 5053.

[0022] When the first suspension type tubular busbar or / and the second suspension type tubular busbar needs to be segmented for expansion, maintenance, repair, reconstruction, the suspension type tubular busbar expansion and reconstruction stage manual segmentation and reconnection device is used for suspension type manual segmentation, and after expansion or maintenance, the suspension type tubular busbar expansion and reconstruction stage manual segmentation and reconnection device is used to reconnect the manual segmentation. The segmentation of the first suspension type tubular busbar and the second suspension type tubular busbar is as shown in Figure 7 .

[0023] When the first suspension type tubular busbar is segmented, all left circuit breakers in the connection mode are disconnected, and each suspension type tubular busbar segment of the first suspension type tubular busbar is safely grounded, so that the first suspension type tubular busbar is powered off for manual segmentation; after the segmentation of the first suspension type tubular busbar is completed, the set suspension type tubular busbar segment of the first suspension type tubular busbar is ungrounded, and the set left circuit breaker in the connection mode is closed, so that the set suspension type tubular busbar segment of the first suspension type tubular busbar is powered on, and the other suspension type tubular busbar segments remain powered off.

[0024] When the second suspension type tubular busbar is segmented, all right circuit breakers in the connection mode are disconnected, and each suspension type tubular busbar segment of the second suspension type tubular busbar is safely grounded, so that the second suspension type tubular busbar is powered off for segmentation; after the segmentation of the second suspension type tubular busbar is completed, the set suspension type tubular busbar segment of the second suspension type tubular busbar is ungrounded, and the set right circuit breaker in the connection mode is closed, so that the set suspension type tubular busbar segment of the second suspension type tubular busbar is powered on, and the other suspension type tubular busbar segments remain powered off.

[0025] Specifically, during the manual segmentation process, the suspension assembly is arranged at a position to be manually segmented of the first suspension type tubular busbar or the second suspension type tubular busbar, as shown in Figure 1 , Figure 2 and Figure 5As shown, the suspension assembly comprises a crossbeam arranged above the first and second suspension tubular busbars, four groups of tubular busbar hangers are arranged on the crossbeam, each of the tubular busbar hangers comprises an insulator string 3 and a basket bolt 2, one end of the basket bolt 2 is movably connected to the crossbeam through a U-shaped hanging ring, the other end of the basket bolt 2 is movably connected to the insulator string 3, two tubular busbar hangers are connected to a group of wire hanging fittings in a V-shaped manner, the wire hanging fittings are connected to a suspension wire clamp 5, and the wire hanging fittings are further connected to a shielding grading ring 4. The shielding grading ring 4 is connected by n-shaped grading sections, and the suspension wire clamp 5 comprises an upper clamp plate and a lower clamp plate, and a connecting bolt between the upper and lower clamp plates; a hinged seat is arranged at the top of the upper clamp plate, and the hinged seat is hinged to the wire hanging fitting; the wire hanging fitting comprises a connecting plate 9, a right-angle hanging plate 10 and a parallel hanging plate 1 connected from top to bottom, one end of the parallel hanging plate 1 is hinged to the hinged seat of the upper clamp plate, the other end of the parallel hanging plate 1 is hinged to the right-angle hanging plate 10, and the right-angle hanging plate 10 is hinged to the connecting plate 9, the two ends of the top of the connecting plate 9 are movably connected to the insulator string 3, and the connecting plate is further connected to the shielding grading ring 4. The suspension wire clamp 5 is connected to the tubular busbar. Similarly, the other two tubular busbar hangers are connected to another group of wire hanging fittings in a V-shaped manner, the other group of wire hanging fittings is connected to another suspension wire clamp 5, and the other suspension wire clamp 5 is connected to the tubular busbar; the distance between the two suspension wire clamps 5 is greater than a set distance threshold. With the busbar below the isolating switch foundation as a reference, the actual elevation of the crossbeam hanging point of the tubular busbar is measured, the length of the tubular busbar hanger is determined in combination with the elevation of the tubular busbar and the distance threshold, so that the length of the tubular busbar hanger can make the distance between the two suspension wire clamps 5 meet the distance threshold. During the connection process, the length of the tubular busbar hanger is adjusted through the basket bolt to more finely adapt to the actual situation. It is ensured that the suspension assembly has no defects such as burrs, concave-convex, cracks and the like, and it is ensured that various anti-loosening caps and locking pins for connection and fixation are locked in place.

[0026] The segmented assembly comprises metal end sealing balls 6 of the end portions of the tubular busbars. The first and / or second suspension tubular busbars are segmented; after cutting the first and / or second suspension tubular busbars, the cut ends are smoothed and deburred, and the metal end sealing balls 6 are installed at the two end portions of the first and / or second suspension tubular busbars. When the two metal end sealing balls 6 are respectively installed at the cut end portions of the tubular busbars, the minimum distance between the two balls is greater than the relative ground electrical distance of the rated voltage of the busbar, so as to ensure that one section of the busbar is in operation, the other section of the busbar is reliably and safely grounded, and the connected electrical equipment is safely operated. The structure of the segmented suspension tubular busbar is as shown in Figure 3

[0027] ​The reconnection assembly comprises two jumper devices 7 installed at the end of the segmented rear tube type bus, and a jumper 8 connected between the jumper devices 7; the jumper between the end of the tube type bus ensures long-term operation of the reconnected tube type bus; a plurality of jumpers are arranged between the tube type bus ends, and split interval rods are arranged between the plurality of jumpers; and the length of the jumper 8 is consistent, and the curvature is consistent.

[0028] During the reconnection process, the target suspended tube type bus to be reconnected is powered off by using the wiring mode, and the target suspended tube type bus to be reconnected is safely grounded; the metal sealing ball 6 at the two ports of the target suspended tube type bus is removed and replaced with a reconnection assembly; the safe grounding of the target suspended tube type bus is cancelled, and the target suspended tube type bus after reconnection is powered on by using the wiring mode. The structure of the suspended tube type bus after reconnection is shown in Figure 4 .

[0029] Specifically, during the reconnection process of the first suspended tube type bus, all left circuit breakers in the wiring mode are disconnected, and each suspended tube type bus segment of the first suspended tube type bus is safely grounded, so that the first suspended tube type bus is powered off for reconnection; after the reconnection of the first suspended tube type bus is completed, the safe grounding of the suspended tube type bus segment of the first suspended tube type bus is removed, and the left circuit breaker set in the wiring mode between the first suspended tube type bus and the second suspended tube type bus is closed, so that the first suspended tube type bus is powered on.

[0030] During the reconnection process of the second suspended tube type bus, all right circuit breakers in the wiring mode are disconnected, and each suspended tube type bus segment of the second suspended tube type bus is safely grounded, so that the second suspended tube type bus is powered off for reconnection; after the reconnection of the second suspended tube type bus is completed, the safe grounding of the suspended tube type bus segment of the second suspended tube type bus is removed, and the right circuit breaker set in the wiring mode between the first suspended tube type bus and the second suspended tube type bus is closed, so that the second suspended tube type bus is powered on.

[0031] Embodiment 2 For embodiment 2, as shown in Figure 8 and Figure 9 , the wiring mode comprises: two circuit breakers connected to two main transformers respectively, and the other end of the circuit breaker is connected to the first suspended tube type bus and the second suspended tube type bus through two conductors respectively; the first suspended tube type bus and the second suspended tube type bus are connected to a plurality of lines, line a, line b and line c; a bus tie interval is arranged between the first suspended tube type bus and the second suspended tube type bus, and a bus tie circuit breaker is arranged in the bus tie interval.

[0032] When the first and / or second suspended tubular busbar needs to be segmented due to expansion or maintenance, the suspended artificial segmentation and reconnection device for suspended tubular busbar expansion and reconstruction phase is used to perform suspended artificial segmentation, and after expansion or maintenance, the suspended artificial segmentation and reconnection device for suspended tubular busbar expansion and reconstruction phase is used to reconnect the artificial segmentation. The segmentation of the first and second suspended tubular busbar is as shown in Figure 9

[0033] When the first suspended tubular busbar is artificially segmented, the first suspended tubular busbar is de-energized, and the two suspended tubular busbar segments to be segmented of the first suspended tubular busbar are safely grounded to carry out artificial segmentation work; after the segmentation of the first suspended tubular busbar is completed, the set suspended tubular busbar segment of the first suspended tubular busbar is ungrounded, and the set suspended tubular busbar segment of the first suspended tubular busbar is restored to be energized, and the other suspended tubular busbar segment remains de-energized.

[0034] When the second suspended tubular busbar is artificially segmented, the second suspended tubular busbar is de-energized, and each suspended tubular busbar segment of the second suspended tubular busbar is safely grounded to carry out artificial segmentation work; after the segmentation of the second suspended tubular busbar is completed, the set suspended tubular busbar segment of the second suspended tubular busbar is ungrounded, and the set suspended tubular busbar segment of the second suspended tubular busbar is restored to be energized, and the other suspended tubular busbar segment remains de-energized.

[0035] During the reconnection process, the target suspended tubular busbar to be reconnected is de-energized by using a wiring mode, and the target suspended tubular busbar to be reconnected is safely grounded; the metal end ball at the two ports of the target suspended tubular busbar is removed and replaced with a reconnection assembly; the target suspended tubular busbar is ungrounded, and the reconnected target suspended tubular busbar is restored to be energized.

[0036] Specifically, during the reconnection process of the first suspended tubular busbar, the first suspended tubular busbar is de-energized, and each suspended tubular busbar segment of the first suspended tubular busbar is safely grounded to carry out artificial reconnection work; after the reconnection of the first suspended tubular busbar is completed, the suspended tubular busbar segment of the first suspended tubular busbar is ungrounded, and the first suspended tubular busbar is restored to be energized.

[0037] During the reconnection process of the second suspended tubular busbar, the second suspended tubular busbar is de-energized, and each suspended tubular busbar segment of the second suspended tubular busbar is safely grounded to carry out artificial reconnection work; after the reconnection of the second suspended tubular busbar is completed, the suspended tubular busbar segment of the second suspended tubular busbar is ungrounded, and the second suspended tubular busbar is restored to be energized.

[0038] Example 3 As​Figure 10 As shown, this invention provides a method for manual segmentation and reconnection during the renovation and expansion phase of a suspended tubular busbar, comprising: During the segmentation process, the target suspended tubular busbar to be segmented is de-energized using a wiring method, and then grounded according to the segmentation safety grounding. The suspension assembly is set at the location of the target suspended tubular busbar to be manually segmented. The target suspended tubular busbar is cut at the set safety distance. After cutting, the cut ends are smoothed, burrs are removed, and metal end caps are installed at both ends of the target suspended tubular busbar. The safety grounding of the suspended tubular busbar sub-segments is removed as needed, and the corresponding suspended tubular busbar sub-segments are restored to energization as needed. After the tubular busbar is segmented, more granular zonal power outages and expansion operations can be carried out as needed during operation, maintenance and expansion.

[0039] During the reconnection process, the wiring method involves de-energizing the target suspended tubular busbar to be reconnected and grounding it safely; removing the metal end caps at both ports of the target suspended tubular busbar and replacing them with reconnection components; canceling the safe grounding of the target suspended tubular busbar and restoring the target suspended tubular busbar to be reconnected.

[0040] Specifically, when there are two target suspended tubular busbars and the wiring method is as described in Example 1, during manual segmentation, all left circuit breakers in the wiring method are opened, causing the first suspended tubular busbar to be de-energized for manual segmentation; after the first suspended tubular busbar is segmented, the left circuit breaker set in the wiring method is closed, causing the set suspended tubular busbar sub-segment of the first suspended tubular busbar to be energized; then, all right circuit breakers in the wiring method are opened, causing the second suspended tubular busbar to be de-energized for manual segmentation; after the second suspended tubular busbar is segmented, the right circuit breaker set in the wiring method is closed, causing the set suspended tubular busbar sub-segment of the second suspended tubular busbar to be energized. Specifically, during the reconnection process, all left circuit breakers in the wiring configuration are disconnected, and each segment of the first suspended tubular busbar is safely grounded to facilitate reconnection. After the reconnection of the first suspended tubular busbar is completed, the safety grounding of the segments of the first suspended tubular busbar is removed, and the left circuit breaker set in the wiring configuration is closed, energizing the first suspended tubular busbar. Then, all right circuit breakers in the wiring configuration are disconnected, and each segment of the second suspended tubular busbar is safely grounded, de-energizing the second suspended tubular busbar to facilitate reconnection. After the reconnection of the second suspended tubular busbar is completed, the safety grounding of the segments of the second suspended tubular busbar is removed, and the right circuit breaker set in the wiring configuration is closed, energizing the second suspended tubular busbar.

[0041] When the target suspension type busbar is two and the wiring mode is the wiring mode of Embodiment 2, during manual segmentation, the first suspension type busbar is powered off, each suspension type busbar segment of the first suspension type busbar is safely grounded to perform manual segmentation; after the first suspension type busbar is segmented, the set suspension type busbar segment of the first suspension type busbar is ungrounded; the set sub-busbar of the first suspension type busbar is live; then, the second suspension type busbar is powered off, each suspension type busbar segment of the second suspension type busbar is safely grounded to perform manual segmentation; after the second suspension type busbar is segmented, the set suspension type busbar segment of the second suspension type busbar is ungrounded; the set sub-busbar of the second suspension type busbar is live. During reconnection, the first suspension type busbar is powered off, each suspension type busbar segment of the first suspension type busbar is safely grounded to perform reconnection; after the first suspension type busbar is reconnected, the suspension type busbar segment of the first suspension type busbar is ungrounded; the first suspension type busbar is live; then, the second suspension type busbar is powered off, each suspension type busbar segment of the second suspension type busbar is safely grounded to perform reconnection; after the second suspension type busbar is reconnected, the suspension type busbar segment of the second suspension type busbar is ungrounded; the second suspension type busbar is live.

[0042] In the embodiments of the present application, it should be understood that the disclosed structure and method can be implemented in other manners. For example, the above-described structure embodiments are merely schematic; the division of the units is only a logical function division; there can be another division manner in actual implementation; for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed coupling or direct coupling or communication connection between units can be indirect coupling or communication connection through some interfaces, structures or units, and can be electrical, mechanical or in other forms.

[0043] The units described as separate components can or can not be physically separate, and the components displayed as units can or can not be physical units, i.e., can be located in one place, or can be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purposes of the embodiments.

[0044] In addition, each functional unit in the various embodiments of the present application can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit. The integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

[0045] The foregoing is considered as illustrative only of the principles of the application. Numerous modifications and changes will readily occur to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Therefore, the scope of the application is indicated by the claims rather than by the foregoing description, and all changes that come within the meaning and range of equivalents are intended to be embraced therein.

Claims

1. A device for artificial sectioning and reconnection of a suspended tubular busbar in a retrofitting phase, characterized in that it comprises: The invention relates to a suspension type tubular busbar manual segmentation position setting suspension assembly, segmentation assembly and reconnection assembly. The suspension assembly comprises four groups of tubular busbar hangers arranged on a crossbeam, two tubular busbar hangers on one side of the crossbeam are connected to a group of wire hanging fittings in a V-shaped manner, the wire hanging fittings are connected to a suspension wire clamp (5), the wire hanging fittings are further connected to a shielding equalizing ring (4), the suspension wire clamp (5) clamps the suspension type tubular busbar, and two other tubular busbar hangers on the other side of the crossbeam are also connected to another group of wire hanging fittings in a V-shaped manner, the other group of wire hanging fittings is connected to another suspension wire clamp (5), the other group of wire hanging fittings is further connected to another shielding equalizing ring (4), and the suspension wire clamp (5) also clamps the suspension type tubular busbar. The segmentation assembly comprises metal end sealing balls (6) which are detachably arranged at the ends of the tubular busbar, two metal end sealing balls (6) are respectively arranged at the cut ends of the tubular busbar, the minimum distance between the two balls is greater than the relative ground electrical distance of the rated voltage of the busbar, so that one section of the busbar is operated, the other section of the busbar is reliably and safely grounded, and the connected electrical equipment is safely operated. The reconnection assembly comprises two jumper devices (7) which are arranged at the ends of the segmented tubular busbar, and a jumper (8) is connected between the jumper devices (7), so that the long-term operation of the reconnected tubular busbar is ensured. The tubular busbar hanger comprises a basket bolt (2) and an insulator string (3), one end of the basket bolt (2) is movably connected to the crossbeam through a hanging ring, the other end of the basket bolt (2) is movably connected to the insulator string (3) through a hanging ring, and the end of the insulator string (3) is movably connected to the wire hanging fitting.

2. The suspended tubular busbar retrofitting, expanding, segmenting and reconnecting device according to claim 1, characterized in that, The shielding equalizing ring (4) is connected by n-shaped equalizing segments.

3. The suspended tubular busbar retrofitting, expanding, segmenting and reconnecting device according to claim 1, characterized in that, The suspension wire clamp (5) comprises an upper clamp plate and a lower clamp plate, and a connecting bolt is arranged between the upper and lower clamp plates.

4. The suspended tubular busbar retrofitting, expanding, segmenting and reconnecting device according to claim 1, characterized in that, The top of the upper clamp plate is provided with a hinged seat, and the hinged seat is hinged to the wire hanging fitting; the wire hanging fitting comprises a connecting plate (9), a right-angle hanging plate (10) and a parallel hanging plate (1) which are connected from top to bottom, one end of the parallel hanging plate (1) is hinged to the hinged seat of the upper clamp plate, the other end of the parallel hanging plate (1) is hinged to the right-angle hanging plate (10), the right-angle hanging plate (10) is hinged to the connecting plate (9), the top of the connecting plate (9) is movably connected to the insulator string (3) at both ends, and the connecting plate (9) is further connected to the shielding equalizing ring (4). The jumper (8) between the ends of the tubular busbar is arranged in multiple strands, and split interval rods are arranged between the multiple strands of jumpers; and the lengths of the jumpers (8) are consistent, and the radii are consistent.

5. The retrofitting and artificial sectionalizing and reclosing device for a suspended tubular bus according to claim 1, characterized in that, The invention relates to a suspension type tubular busbar manual segmentation position setting suspension assembly, segmentation assembly and reconnection assembly.

6. A method for manual sectioning and reconnection of a suspended tubular busbar in a reconstruction phase, applied to the device for manual sectioning and reconnection of a suspended tubular busbar in a reconstruction phase according to any one of claims 1-5, characterized in that, ​ In the segmentation process, the target suspension type tubular busbar to be artificially segmented is powered off, and the target suspension type tubular busbar to be artificially segmented is safely grounded; the suspension assembly is arranged at the position of the target suspension type tubular busbar to be artificially segmented; the target suspension type tubular busbar is cut, so that when the metal end sealing ball is installed, the minimum distance between the two balls is greater than the relative ground electrical distance of the rated voltage of the busbar, the operation of one section of the busbar is ensured, the other section of the busbar is reliably and safely grounded, the connected electrical equipment is safely operated, after the target suspension type tubular busbar is cut, the cutting port is smoothed, burrs are removed, and the metal end sealing ball is installed at the two cutting ports of the target suspension type tubular busbar; the safety grounding of the suspension type tubular busbar section is released according to the requirement, the power is restored, and the other section is continuously powered off to carry out the operation; In the reconnection process, the target suspension type tubular busbar to be reconnected is powered off, and the target suspension type tubular busbar to be reconnected is safely grounded; the metal end sealing ball at the two ports of the target suspension type tubular busbar is removed and replaced with a reconnection assembly; the safety grounding of the target suspension type tubular busbar is released, and the target suspension type tubular busbar after reconnection is restored to be powered.

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