CN201421952Y - Low voltage segmentation load transfer device of power system - Google Patents

Low voltage segmentation load transfer device of power system Download PDF

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Publication number
CN201421952Y
CN201421952Y CN2009200693832U CN200920069383U CN201421952Y CN 201421952 Y CN201421952 Y CN 201421952Y CN 2009200693832 U CN2009200693832 U CN 2009200693832U CN 200920069383 U CN200920069383 U CN 200920069383U CN 201421952 Y CN201421952 Y CN 201421952Y
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CN
China
Prior art keywords
transfer device
power system
strip
load transfer
voltage
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Expired - Lifetime
Application number
CN2009200693832U
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Chinese (zh)
Inventor
潘忠林
刘洪发
周陶宏
周顺福
张弛
任世国
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHANGHAI SHILIN ELECTRIC POWER TECHNOLOGY DEVELOPMENT Co Ltd
Shanghai Municipal Electric Power Co
Original Assignee
SHANGHAI SHILIN ELECTRIC POWER TECHNOLOGY DEVELOPMENT Co Ltd
Shanghai Municipal Electric Power Co
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Application filed by SHANGHAI SHILIN ELECTRIC POWER TECHNOLOGY DEVELOPMENT Co Ltd, Shanghai Municipal Electric Power Co filed Critical SHANGHAI SHILIN ELECTRIC POWER TECHNOLOGY DEVELOPMENT Co Ltd
Priority to CN2009200693832U priority Critical patent/CN201421952Y/en
Application granted granted Critical
Publication of CN201421952Y publication Critical patent/CN201421952Y/en
Anticipated expiration legal-status Critical
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Abstract

The utility model relates to a low voltage segmentation load transfer device of a power system, comprising an operation box body. Six lead pile heads are arranged at the top part of the operation boxbody, a three-phase translation type load switch blade is arranged in the operation box body, the six lead pile heads are divided into two sets, and each set has three phases and are respectively connected with both ends of the three-phase translation type load switch blade. Compared with the prior art, the utility model solves the problems of overlarge single-phase operation current and contact resistance increasing and heating caused by singeing of a contact point in the prior jumper wire device, further improves the conditions of ageing and burning of an insulating layer, also shortens theworking time of an operator, weakens the labor strength of the operator, and enhances the working efficiency and the operation safety.

Description

Low-voltage sectionalized load transfer device of power system
Technical field
The utility model relates to a kind of electric power system 380V overhead transmission line segmentation load transfer device, relates in particular to low-voltage sectionalized load transfer device of power system.
Background technology
At present, the existing 380V low pressure of electric power system segmentation load transfer device is traditional low pressure segmentation jumper device.This device has handed down and has used decades, the defective below finding to exist in running:
(1) there are recessive birth defects.Amplitude of fluctuation is big after being subjected to wind-force, very easily causes fuse to split off but not fuse (can be judged by fracture), and quality and rational deficiency have been quickened the degree of aging of device;
(2) be unable to undergo the impact of big electric current, after impacting for two, three times, situation can be singed or burn out to contact-making surface, because contact resistance increases, heating, is easy to generate fault after the repeated multiple times operation and causes power failure;
(3) the insulating degree is low, and exposed position is big, because the operation of existing jumper device is frequent, not only causes on the bar live line working personnel mistake to bump easily, also causes low pressure jumper device impaired because of misoperation easily;
(4) long-term exposing to the sun and rain, be subject to extraneous factors influences such as weather, environment;
(5) processing safety is lower, and when carrying out the operation of jumper load transfer, operating personnel will outwards put out, and operating procedure is many, easily has an accident; Simultaneously, load current must not be inconsistent greater than the regulation of 50A in the inevitable biconditional operation rules in the load transfer hot line job process, and free-standing exercise is done to cause to operate against regulations.
Summary of the invention
The purpose of this utility model is exactly in order to overcome the defective that above-mentioned prior art exists, a kind of safe and reliable, easy to operate low-voltage sectionalized load transfer device of power system to be provided.
The purpose of this utility model can be achieved through the following technical solutions: low-voltage sectionalized load transfer device of power system, this device comprises the operation casing, it is characterized in that, described operation casing top is provided with six lead-in wire pile crowns, described operation box house is provided with three-phase parallel-moving type load plug-in strip, described six lead-in wire pile crowns are divided into two groups, and every group of three-phase is connected on three-phase parallel-moving type load plug-in strip two ends respectively.
Described three-phase parallel-moving type load plug-in strip is fixed in the operation casing by the plug-in strip positioning supporting frame.
Described three-phase parallel-moving type load plug-in strip is provided with the operating grip of its deciliter of control, and this operating grip is located at the control box external body.
The middle part of described three-phase parallel-moving type load plug-in strip is equipped with grid formula fuse.
In described two groups of lead-in wire pile crowns, one group of end with parallel-moving type load plug-in strip is provided with copper bar and is connected, and another group is provided with insulated conductor with the other end of parallel-moving type load plug-in strip and is connected.
Described copper bar external packets is wrapped with the pyrocondensation insulating barrier.
Described insulated conductor is 240mm 2Insulated conductor.
Described three-phase parallel-moving type load plug-in strip two ends are equipped with muffler, and the every mutually every end of this muffler is provided with five.
Described operation casing is provided with earth connection.
Compared with prior art, it is excessive that the utility model has solved the single-phase operating current of existing jumper device, and contact point is singed, and the contact resistance that causes increases, the situation of heating, and insulating barrier wears out, the situation of burning out is further improved; Simultaneously, shorten operating personnel's operating time and labour intensity, improved operating efficiency and processing safety.
Description of drawings
Fig. 1 is the operation casing schematic diagram of the utility model low-voltage sectionalized load transfer device of power system;
Fig. 2 is the schematic internal view of the utility model low-voltage sectionalized load transfer device of power system;
Fig. 3 is the circuit theory schematic diagram of the utility model low-voltage sectionalized load transfer device of power system.
Embodiment
Below in conjunction with specific embodiment the utility model is described further.
Shown in Fig. 1~3, low-voltage sectionalized load transfer device of power system, this device comprises operation casing 1, described operation casing top is provided with six lead-in wire pile crowns 2, described operation casing 1 inside is provided with three-phase parallel-moving type load plug-in strip 3, described six lead-in wire pile crowns 2 are divided into two groups, and every group of three-phase is connected on three-phase parallel-moving type load plug-in strip 3 two ends respectively.
Described three-phase parallel-moving type load plug-in strip 3 is fixed in the operation casing by plug-in strip positioning supporting frame 4.
Described three-phase parallel-moving type load plug-in strip 3 is provided with the operating grip 9 of its switch of control, and this operating grip 9 is located at operation casing 1 outside, realizes opening and closed parallel-moving type load plug-in strip 3 by guide rail 8.
The middle part of described three-phase parallel-moving type load plug-in strip 3 is equipped with grid formula fuse 7.
In described two groups of lead-in wire pile crowns 6, one group of end with parallel-moving type load plug-in strip 3 is provided with copper bar 5 and is connected, and another group is provided with insulated conductor 6 with the other end of parallel-moving type load plug-in strip 3 and is connected.
Described copper bar 5 external packets are wrapped with the pyrocondensation insulating barrier.
Described insulated conductor 6 is 240mm 2Insulated conductor.
Described three-phase parallel-moving type load plug-in strip 3 two ends are equipped with muffler, and the every mutually every end of this muffler is provided with five.
Described operation casing 1 is provided with earth connection.
In order to overcome the multinomial defective of existing low pressure segmentation jumper device when the 380V power overhead network load transfer, the utility model is developed a kind of novel low pressure segmentation load transfer device, this device can not only be realized 380V overhead transmission line load transfer function, and improved the situation that contact point is easily singed, burnt out, improved the ability of load transfer device antagonism such environmental effects, more safe and reliable, easy to operate to operating personnel, after small-scale application, find to meet fully to produce and actual needs.
The technical scheme that its technical problem that solves the utility model adopts is:
Behind heavy current impact, contact-making surface is singed and is caused contact resistance increase, heating phenomenon, by improving the contact of existing jumper, replaces to reduce singing, burning out of contact point with copper bar at existing low pressure jumper device.
Expose to the sun and rain outside at existing low pressure jumper device is exposed for a long time, be subject to factor affecting such as weather, environment, make an operation casing, on-load switch places in the case, has reduced the influence that bad weather brings.
How easily to have an accident at existing low pressure jumper device operating personnel's operating procedure in the transposing process, and inevitable inconsistent in the operating process with the safety rules, adopt the original free-hand work of operating grip replacement.
Easily cause on the electric pole live line working personnel mistake to bump situation during at the operation of existing low pressure jumper device, novel electric power system low-voltage segmentation load transfer device is contour with order gram case, and mode of operation is identical with order gram case.Operation and maintenance convenient, the safety of getting up like this.
At existing low pressure jumper device the oxidation situation takes place behind heavy current impact, making can be stood the copper bar that big load current impacts.
The box load transfer device construction of novel low pressure is similar to the order gram fuse box that bar becomes.Cancellation rheology device keeps lock electricity (arc-extinction device), and grid formula fuse then reaches the equipment situation as required and decides.Segmentation two side electric currents possess the paired running condition, then make the balance fuse with grid formula fuse during two electrical network paired runnings and use.When needing segmentation to close as operation, then with copper bar with grid formula fuse short circuit.Wherein the shape of copper bar, size, port all should be similar with grid formula fuse.For maintaining easily, operating, it is contour that novel low pressure jumper device is become order gram case with bar.Two sections of low pressure segmentations are with 6 * 120mm 26 road shelves line brackets of JKYJ-1 lead special use are supported, are drawn down.Join with pile crown about the novel low pressure jumper device respectively, draw earth connection down, add one of the earth electrode utmost point,, make low voltage electric network neutral line iterative earthing simultaneously again even the control box body case has protective earthing by the neutral line on the bar.So just, afford load, also be difficult for being burnt out.
Low-voltage sectionalized load transfer device of power system is by 120mm 2JKYJ-1 type insulated conductor, operation casing, 120mm 2Pacify general wire clamp, earth electrode, 35mm 2Steel strand wire, three road cable beareves constitute, and get along and draw 120mm from electric pole two ends segmentation 380V low-voltage line A phase, B phase, C phase, O 2JKYJ-1 type insulated conductor joins through pile crown about three road cable bearer biconditional operation casings, draws 35mm from control box case shell 2Steel strand wire are as earth connection, and are embedded in underground earth electrode and join.
Be equipped with arc-extinction device at the inner disconnecting link interface of control box, installed the extinguishing arc calotte additional.

Claims (9)

1. low-voltage sectionalized load transfer device of power system, this device comprises the operation casing, it is characterized in that, described operation casing top is provided with six lead-in wire pile crowns, described operation box house is provided with three-phase parallel-moving type load plug-in strip, described six lead-in wire pile crowns are divided into two groups, and every group of three-phase is connected on three-phase parallel-moving type load plug-in strip two ends respectively.
2. low-voltage sectionalized load transfer device of power system according to claim 1 is characterized in that, described three-phase parallel-moving type load plug-in strip is fixed in the operation casing by the plug-in strip positioning supporting frame.
3. low-voltage sectionalized load transfer device of power system according to claim 1 is characterized in that, described three-phase parallel-moving type load plug-in strip is provided with the operating grip of its deciliter of control, and this operating grip is located at the control box external body.
4. low-voltage sectionalized load transfer device of power system according to claim 1 is characterized in that, the middle part of described three-phase parallel-moving type load plug-in strip is equipped with grid formula fuse.
5. low-voltage sectionalized load transfer device of power system according to claim 1, it is characterized in that, in described two groups of lead-in wire pile crowns, one group of end with parallel-moving type load plug-in strip is provided with copper bar and is connected, and another group is provided with insulated conductor with the other end of parallel-moving type load plug-in strip and is connected.
6. low-voltage sectionalized load transfer device of power system according to claim 5 is characterized in that, described copper bar external packets is wrapped with the pyrocondensation insulating barrier.
7. low-voltage sectionalized load transfer device of power system according to claim 5 is characterized in that described insulated conductor is 240mm 2Insulated conductor.
8. low-voltage sectionalized load transfer device of power system according to claim 1 is characterized in that, described three-phase parallel-moving type load plug-in strip two ends are equipped with muffler, and the every mutually every end of this muffler is provided with five.
9. low-voltage sectionalized load transfer device of power system according to claim 1 is characterized in that, described operation casing is provided with earth connection.
CN2009200693832U 2009-03-25 2009-03-25 Low voltage segmentation load transfer device of power system Expired - Lifetime CN201421952Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009200693832U CN201421952Y (en) 2009-03-25 2009-03-25 Low voltage segmentation load transfer device of power system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009200693832U CN201421952Y (en) 2009-03-25 2009-03-25 Low voltage segmentation load transfer device of power system

Publications (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101847842B (en) * 2009-03-25 2012-11-07 上海市电力公司 Low-voltage sectionalized load transfer device of power system
CN105655889A (en) * 2014-12-02 2016-06-08 国网上海市电力公司 Box typed low-voltage load transfer device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101847842B (en) * 2009-03-25 2012-11-07 上海市电力公司 Low-voltage sectionalized load transfer device of power system
CN105655889A (en) * 2014-12-02 2016-06-08 国网上海市电力公司 Box typed low-voltage load transfer device

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Granted publication date: 20100310

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