CN108075452A - A kind of transmission line of electricity Self-Protection Subsystem - Google Patents

A kind of transmission line of electricity Self-Protection Subsystem Download PDF

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Publication number
CN108075452A
CN108075452A CN201711431905.4A CN201711431905A CN108075452A CN 108075452 A CN108075452 A CN 108075452A CN 201711431905 A CN201711431905 A CN 201711431905A CN 108075452 A CN108075452 A CN 108075452A
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CN
China
Prior art keywords
phase
conductive
line
hole
scanning platform
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Granted
Application number
CN201711431905.4A
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Chinese (zh)
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CN108075452B (en
Inventor
储建华
高霞
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Inner Mongolia Tata power transmission and Transformation Engineering Co.,Ltd.
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Suzhou Aijia Automation Technology Co Ltd
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Priority to CN201711431905.4A priority Critical patent/CN108075452B/en
Publication of CN108075452A publication Critical patent/CN108075452A/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means

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  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)

Abstract

The invention discloses a kind of transmission line of electricity Self-Protection Subsystems; the three-phase line that at least two-way is arranged in parallel; the first electrical signal collection unit is provided on the neutral point of the three-phase line; the second electrical signal collection unit is provided on the input terminal parallel wire of two-way three-phase line, the 3rd electrical signal collection unit is provided on the output terminal parallel wire of three-phase line described in two-way；Several fault collection units；Several failure detectors, at least one fault isolation device are provided with one and are conductively connected arm, and the arm both ends that are conductively connected are respectively arranged with a conductive connection-peg, and the conduction connection-peg is contacted with the electric connecting terminal selective conductivity at source of trouble both ends；The present invention improves the security of transmission line of electricity operation, effectively avoids damaging equipment and circuit due to failure.

Description

A kind of transmission line of electricity Self-Protection Subsystem
Technical field
The present invention relates to a kind of circuit intelligent protection system, it is more particularly related to a kind of transmission line of electricity self-insurance Protecting system.
Background technology
Single-phase earthing is 10kV (35kV) single-phase earthing of small current earthing system, and singlephase earth fault is that distribution system is most normal The failure seen mostly occurs in moist, rainy weather.Due on screen of trees, distribution line insulator it is single-phase breakdown, single-phase wire break and Caused by the factors such as toy harm.Single-phase earthing not only affects the normal power supply of user, but also there may be excessively electric Pressure, burns out equipment or even causes phase fault and expand accident.
In actual operation, brick field plastic cloth is fallen on conducting wire because of strong wind, is made transformer substation voltage mutual inductor burn observations, is made Forming apparatus damage, large area blackout.Singlephase earth fault occur after, it is also possible to generate resonance overvoltage, generate times over The resonance overvoltage of normal voltage jeopardizes the insulation of transformer equipment, and severe patient makes transformer equipment insulation breakdown, causes more major issue Therefore.
After singlephase earth fault occurs, it may occur however that intermittent arc grounding causes resonance overvoltage, generates times over just The overvoltage of normal voltage, overvoltage puncture the insulator dielectric further made on circuit, cause serious short circuit accident, simultaneously Part distribution transformer may be burnt, makes the arrester on circuit, fuse insulating breakdown, burn, it is also possible to electrical fire occur Calamity.
It is badly in need of a kind of transmission line of electricity Self-Protection Subsystem as a result, to find the source of trouble in time and cut off rapidly, in order to avoid cause more It is big to influence.
The content of the invention
It is an object of the invention to solve at least the above, and provide the advantages of at least will be described later.
A further object of the invention is to be directed to the design defect of more than transmission line of electricity, provides a kind of transmission line of electricity self-shield System, by fault collection unit and failure detector come automatically to abort situation judge, by fault isolation device will therefore Barrier source is cut off, and to ensure three-phase line normal operation, protects power grid security, avoids expanding tripping scope, so as to improve transmission of electricity The reliability of circuit, the present invention improve the security of transmission line of electricity operation, effectively avoid damaging equipment and circuit due to failure.
In order to realize these purposes and further advantage according to the present invention, a kind of transmission line of electricity Self-Protection Subsystem is provided, Including：
Spare three-phase line, on the former three-phase line being arranged in parallel, the three-phase line input terminal is connected with power end, The output terminal of the three-phase line is connected with electrical equipment, former three-phase line initial and end end and spare three-phase line initial and end both ends point The first electrical signal collection unit She Zhi not be provided on the neutral point of the three-phase line there are one three-phase breaker；
Several fault collection units are disposed on the three-phase line between the three-phase breaker of initial and end end, the event Hinder collecting unit including three pairs of single-phase circuit breakers, first single-phase circuit breaker in single-phase circuit breaker described in each pair is connected on original three In a certain phase line of phase line, second single-phase circuit breaker be connected in the correspondence phase line of spare three-phase line, each list Phase breaker output terminal draws an electric connecting terminal, and so as to form three pairs of electric connecting terminals, the input terminal of three-phase line described in two-way is simultaneously The second electrical signal collection unit is provided on line, the 3rd telecommunications is provided on the output terminal parallel wire of three-phase line described in two-way Number collecting unit；
Failure detector, it is longitudinally several through opening up on the insulation scanning platform including an insulation scanning platform To conductive through hole, each conductive through hole is arranged at intervals, and the conductive through hole upper end protrudes from the insulation scanning platform Upper surface certain distance, the insulation scanning platform upper surface offer one first groove, the conductive through hole along its length Interval is arranged on the both sides of first groove, and first groove is located at the insulation scanning platform upper surface center, described A first straight line driving mechanism and a first straight line displacement ball bar ruler, the first straight line displacement ball bar are provided in first groove The direction of ruler is consistent with the length direction of the insulation scanning platform；It is provided on the movable block of the first straight line driving mechanism One guide pad moved back and forth along first groove is equipped with the conductive contact that a pair of of insulation gap is set on the guide pad It holds, is provided with one first reading head in the guide pad, first reading head is set in the first straight line displacement ball bar ruler On, the input terminal of the first one selection detection unit of conductive contact end connection, the second conductive contact end connects the choosing Select the output terminal of detection unit；Wherein, each electric connecting terminal is electrically connected to a conduction with conductive through hole cooperation Column, same a pair electric connecting terminal on the fault collection unit are plugged in failure detector successively by the conductive column On same a pair conductive through hole in, a pair of conductive contact end by the first straight line driving mechanism drive successively with respectively To the opposing sidewalls conductive contact of the conductive through hole protruding end；And
Fault isolation device moves along the length direction of insulation scanning platform and is arranged on the insulation scanning platform upper table Face, the width first end of the insulation scanning platform upper surface offers one second groove, described to insulate on scanning platform The width second end on surface offers one the 3rd groove, and a second straight line driving mechanism is provided in second groove, Second straight line displacement ball bar ruler is equipped in 3rd groove, the fault isolation device first end is arranged on the second straight line On the movable block of driving mechanism, the second end of the fault isolation device is provided with the second reading head, the second reading headgear Be located on the second straight line displacement ball bar ruler, on the fault isolation device longitudinal extension be provided with one and be conductively connected arm, institute Stating conductive contact arm can move along the width of insulation scanning platform, and the length for being conductively connected arm and continuous three Straight line spacing between the conductive through hole is consistent, and the arm both ends that are conductively connected are vertically arranged with a conductive connection-peg respectively, The diameter of the conduction connection-peg is consistent with the internal diameter of the conductive through hole, and the conduction connection-peg is selected with the conductive through hole Property conduction grafting.
Preferably, the former three-phase line head end is provided with the first three-phase breaker, and the spare three-phase line head end is set The second three-phase breaker is equipped with, the original three-phase line tail end is provided with the 3rd three-phase breaker, the spare three-phase line tail End is provided with the 4th three-phase breaker, wherein, the first three-phase breaker and the second three-phase breaker are arranged on three-phase described in two-way The input parallel connected end downstream of circuit, the 3rd three-phase breaker and the 4th three-phase breaker are arranged on the defeated of three-phase line described in two-way Go out parallel connected end upstream.
Preferably, each fault collection unit is successively set on first three-phase breaker and the 3rd three-phase break On three-phase line between device, the fault collection unit specifically includes：
First pair of single-phase circuit breaker, is made of the first single-phase circuit breaker and the second single-phase circuit breaker, and described first is single-phase Breaker is connected in the first phase line of former three-phase line, and second single-phase circuit breaker is connected on the first of spare three-phase line In phase line；
Second pair of single-phase circuit breaker, is made of the 3rd single-phase circuit breaker and the 4th single-phase circuit breaker, and the described 3rd is single-phase Breaker is connected in the second phase line of former three-phase line, and the 4th single-phase circuit breaker is connected on the second of spare three-phase line In phase line；
3rd pair of single-phase circuit breaker, is made of the 5th single-phase circuit breaker and the 6th single-phase circuit breaker, and the described 5th is single-phase Breaker is connected on the third phase line of former three-phase line, and the 6th single-phase circuit breaker is connected on the 3rd of spare three-phase line In phase line.
Preferably, each fault collection unit is equidistantly disposed on the three-phase line, and described first is single Phase breaker output terminal draws the first electric connecting terminal, and the second single-phase circuit breaker output terminal draws the second electric connecting terminal, described 3rd single-phase circuit breaker output terminal draws the 3rd electric connecting terminal, and the 4th single-phase circuit breaker output terminal draws the 4th electrical connection End, the 5th single-phase circuit breaker output terminal draw the 5th electric connecting terminal, and the 6th single-phase circuit breaker output terminal draws the 6th Electric connecting terminal connects a conductive column on each electric connecting terminal.
Preferably, it is several the conductive through hole equal spacings to be located on the insulation scanning platform, and through exhausted The upper and lower surface of edge scanning platform, conductive through hole described in each pair are arranged on the first groove both sides, a pair of conductive contact The distance between end is consistent with the distance between a pair of conductive through hole lateral wall, and the on each fault collection unit One electric connecting terminal and the second electric connecting terminal are plugged to by the conductive column successively conduction on first insulation scanning platform It is each in the conductive through hole, the 3rd electric connecting terminal and the 4th electric connecting terminal on each fault collection unit pass through institute State conductive column successively it is conductive be plugged to it is each in the conductive through hole on second insulation scanning platform, it is each described therefore The 5th electric connecting terminal and the 6th electric connecting terminal on barrier collecting unit are plugged to the 3rd institute by the conductive column successively conduction It states each in the conductive through hole on insulation scanning platform.
Preferably, the first straight line driving mechanism includes a driving motor, and the driving motor is arranged on the insulation Scanning platform end is provided with a screw with driving mechanism driving axis connection in first groove along its length, A movable block is arranged on the screw, the guide pad is arranged on the upper end of first straight line driving mechanism movable block, and described Guide pad bottom opens up pass through aperture, and first reading head is arranged on the through hole periphery, the first straight line displacement ball Grid ruler is arranged in parallel in first groove of the screw one side, and the guide pad is set in described by the through hole On first straight line displacement ball bar ruler.
Preferably, a pair of conductive contact end is arranged on the guide pad upper end, and the conductive contact end protrudes from Insulation scanning platform upper surface certain distance, a pair of conductive contact end is symmetrically discrete to be arranged on the guide pad two Side, a pair are provided with a collets between the conductive contact end, a conductive contact head, institute are provided on the conductive contact end Conductive contact end is stated to contact with each conductive through hole protruding end sliding conduction by the conductive contact head.
Preferably, the conductive contact head includes fixed conductive seat, conducting rod, sliding conduction seat and conductive boots, described solid Determine conductive seat to be fixed on the conductive contact end, the conducting rod is vertically set on the center of the fixed conductive seat, described Conductive boots are arranged on the sliding conduction seat, and the sliding conduction cover for seat sets activity on the conducting rod, and the slip is led Electric seat and the conducting rod resilient conductive contact, the conduction boots are provided with one and are led with the conductive through hole snug engagement Slot, the guide groove outside, which is provided with, imports angle, and a conductive cambered surface being recessed inwardly, the conduction cambered surface are provided in the guide groove It is connected by an elastic component with the guide groove bottom conductive.
Preferably, the fault isolation device includes：
Stent, by two discrete supporting rods and the guide post group being connected between supporting rod into the stent passes through The bracing member is located at the insulation scanning platform upper surface, and the guide rod and insulation scanning platform upper surface interval are certain Distance, and the direction of the guide rod is consistent with the width of the insulation scanning platform, first supporting rod connection On the movable block of the second straight line driving mechanism, a sliding block is provided on second supporting rod, the sliding block is arranged It slides on the second straight line displacement ball bar ruler, second reading head is arranged on inside the sliding block, and described second reads Several envelopes are in the periphery of the second straight line displacement ball bar ruler；
First telescoping drive mechanism is arranged on the guide rod, and the telescopic end of first telescoping drive mechanism is lived It is dynamic to be set on the guide rod, the distance of stretch out and draw back of first telescoping drive mechanism not less than a pair of conductive contact end it Between distance；
Second telescoping drive mechanism is vertically set on the telescopic end of first telescoping drive mechanism, described second The telescopic end of telescoping drive mechanism is towards the insulation scanning platform upper surface；And
One is conductively connected arm, and length direction is consistent with the length direction of the insulation scanning platform, described to be conductively connected Arm center is arranged on the telescopic end of second telescoping drive mechanism, and one is conductively connected between the conductive connection-peg of arm both sides Straight line spacing between distance and continuous three conductive through holes is consistent, and the conductive connection-peg and the conductive through hole Match, the conduction connection-peg selectivity is plugged on from insulation scanning platform upper surface in the conductive through hole.
Preferably, the selection detection unit includes a first resistor for being sequentially connected in series setting, warning light, current acquisition Unit and second resistance, the first resistor connect first conductive contact head, and the second resistance connects second conduction and connects Contact.
The present invention includes at least following advantageous effect：
1st, the present invention quickly judges the nature of trouble of transmission line of electricity, and may recognize that the specific line that failure occurs Road quickly finds failure and is solved in time, fault coverage is avoided further to expand, and then ensure that provide staff The reliability of transmission line of electricity；
2nd, after failure occurs, transmission line of electricity of the invention can position the spot of failure, and failure spot is had Effect excision, so as to improve the efficiency of the solution failure of staff；
3rd, transmission line of electricity of the invention uses the three-phase power line that two-way is arranged in parallel, wherein after breaking down all the way not The normal work of transmission line of electricity can be influenced, improves transmission line of electricity power supply continuity, meanwhile, after failure occurs, adopted by failure Collection unit, failure detector and fault isolation device can cut off trouble point from power grid, ensure normal in transmission line of electricity Breakdown maintenance is carried out in the case of power supply, so as to solve power failure operation and influence power supply the technical issues of.
Part is illustrated to embody by further advantage, target and the feature of the present invention by following, and part will also be by this The research and practice of invention and be understood by the person skilled in the art.
Description of the drawings
Fig. 1 is the system line figure of transmission line of electricity of the present invention；
Fig. 2 is the structure diagram of fault collection unit；
Fig. 3 is the assembling structure schematic diagram of fault isolation device and failure detector；
Fig. 4 is the structural scheme of mechanism of first straight line driving mechanism；
Fig. 5 is the structure diagram of a pair of conductive contact jaw；
Fig. 6 is selection detection unit internal circuit configuration schematic diagram；
Fig. 7 is the structure diagram that conductive connection-peg is plugged on conductive through hole.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art with reference to specification text Word can be implemented according to this.
It should be appreciated that such as " having ", "comprising" and " comprising " term used herein do not allot one or more The presence or addition of a other elements or its combination.
The present invention provides a kind of transmission line of electricity Self-Protection Subsystem, as shown in figs. 1-7, including a spare three-phase line, simultaneously Join on the former three-phase line set, be arranged in parallel using two-way three-phase line in the present embodiment and build supply network, two-way is defeated Electric three-phase line is in parallel in input terminal and output, and transmission line of electricity of the invention uses the three phase supply line that two-way is arranged in parallel Road wherein after three-phase line breaks down all the way, can cut off, not interfere with the normal work of another way transmission line of electricity in time, So as to improve transmission line of electricity power supply continuity, meanwhile, it, can be right in the case of transmission line of electricity normal power supply after failure occurs The three-phase line to break down carries out breakdown maintenance, so as to avoid, to transmission line of electricity all power-off progress trouble huntings, providing Power supply continuity and reliability.
It is connected after each three-phase line input terminal parallel connection with three-phase electricity source, the output terminal of each three-phase line It is connected after parallel connection with electrical equipment, two-way three-phase power line is arranged in parallel, and is independent of each other, on the neutral point of the three-phase line The first electrical signal collection unit 11 is provided with, for gathering the neutral point voltage of three-phase power line in transmission line of electricity, power transmission line During the normal operation of road, neutral point voltage zero, after singlephase earth fault occurs on three-phase line, neutral point voltage is to rise to Phase voltage, the neutral point voltage collected by the first electrical signal collection unit 11 can judge the list occurred in three-phase line Phase earth fault.
It specifically, further including an earth protective device, is not shown in figure, earth protective device includes be arranged in parallel first First connects end altogether of circuit and second circuit, first circuit and second circuit passes through the first electrical signal collection unit 11 It is connected on the neutral point of the three-phase line, the second connects end altogether ground connection of first circuit and second circuit, described first Circuit includes the first reactance being connected in series and fuse, and the second circuit includes the switch being connected in series and the second reactance, The reactance value of second reactance is more than the reactance value of the first reactance, and the switch is in normally open.
The second electrical signal collection unit 12 is provided on the input terminal parallel wire of three-phase line described in two-way, three described in two-way The 3rd electrical signal collection unit 13 is provided on the output terminal parallel wire of phase line, wherein, the original three-phase line head end is set There is the first three-phase breaker K1, the spare three-phase line head end is provided with the second three-phase breaker K2, the original three-phase line Tail end is provided with the 3rd three-phase breaker K3, and the spare three-phase line tail end is provided with the 4th three-phase breaker K4, wherein, the One three-phase breaker K1 and the second three-phase breaker K2 is arranged on the input parallel connected end downstream of three-phase line described in two-way, and the three or three Phase breaker K3 and the 4th three-phase breaker K4 is arranged on the output-parallel end upstream of three-phase line described in two-way, works as three-phase line On break down after, you can former three-phase line is cut off by the first three-phase breaker K1 and the 3rd three-phase breaker K3, Spare three-phase line is cut off by the second three-phase breaker K2 and the 4th three-phase breaker K4, guarantee is not broken down Three-phase line normal power supply operation.
It is provided with an alarm unit and connects the first electrical signal collection unit 11, the second electrical signal collection unit 12 respectively With the 3rd electrical signal collection unit 13, after the first electrical signal collection unit 11 collects false voltage, you can control alarm is single Member alarm, sends fault-signal, so that staff has found in time and solves failure.
Meanwhile second electrical signal collection unit 12 can gather on spare three-phase line per phase voltage swing, electric current it is big Small and flow direction, when transmission line of electricity normal power supply is run, the second electrical signal collection unit 12 and the 3rd electrical signal collection unit 13 The current direction collected is consistent, when earth fault occurs for a certain phase in three-phase line, passes through the second electrical signal collection Voltage when the three-phase electric signal that unit 12 gathers can judge the corresponding phase and failure to break down mutually normally is positive and negative, tool Body, the respective phase voltage of earth fault two-phase does not occur and rises to line voltage, faulted phase voltage becomes 0, according to non-faulting The size of current of two-phase can calculate that voltage when being out of order mutually normal is positive and negative with flow direction.
Specifically, for example, after earth fault occurs for the first phase on transmission line of electricity three-phase line, and extrapolate the first phase and exist When normal operating voltage is positive voltage, if corresponding event in the second electrical signal collection unit 12 and the 3rd electrical signal collection unit 13 When the electric current of barrier phase flows outwardly simultaneously, then earth fault occurs for the first phase in former three-phase line；If the second electric signal is adopted When corresponding to the electric current of failure phase in collection 12 and the 3rd electrical signal collection unit 13 of unit and flowing inward into simultaneously, then spare three-phase line In the first phase occur earth fault.After earth fault occurs for the first phase on transmission line of electricity three-phase line, and extrapolate first Mutually when normal operating voltage is negative voltage, if right in the second electrical signal collection unit 12 and the 3rd electrical signal collection unit 13 When the electric current of failure phase being answered to flow outwardly simultaneously, then earth fault occurs for the first phase in spare three-phase line；If the second electricity When the electric current of failure phase corresponded in 12 and the 3rd electrical signal collection unit 13 of signal gathering unit flowing inward into simultaneously, then former three-phase Earth fault occurs for the first phase in circuit.
It may determine that earth fault occurs for transmission line of electricity by the first electrical signal collection unit 11 as a result, and send report Alert signal can specifically be judged ground connection event occurs by the second electrical signal collection unit 12 and the 3rd electrical signal collection unit 13 The three-phase line and phase line of barrier if earth fault occurs for former three-phase line, control the first three-phase breaker K1 and the three or three Phase breaker K3 is cut-off simultaneously, if earth fault occurs for spare three-phase line, controls the second three-phase breaker K2 and the 4th Three-phase breaker K4 is cut-off simultaneously.
Specifically, after earth fault occurs, neutral point is grounded by the first reactance and fuse, in the present embodiment, first Reactance is low reactance value reactor, and after earth fault occurs, it is larger to flow through the earth current of the first reactance, is connect so as to accelerate The action response time of ground circuit both ends three-phase breaker, the three-phase breaker at both ends cut-off rapidly, faulty line are cut off, subtract Small time of failure avoids damage line facility and avoids causing upper level circuit breaker trip, so as to avoid failure shadow The further expansion of scope is rung, since the earth current on the first circuit is very big, when ground path both ends three-phase breaker responds, Fuse also fuses immediately, and big earth current is avoided to carry out for a long time, damages three-phase breaker contact, is also beneficial to three-phase break Device is cut-off, and avoids causing long-time arcing or failure of interruption between contact due to high current, hereafter, switch is closed, and neutral point leads to Second circuit ground connection is crossed, the second reactance is big reactance value reactor, after earth fault occurs, flows through the ground connection electricity of the second reactance Stream is smaller, is conducive to three-phase breaker and directly cut-offs, and reduces switch off time, protects three-phase line and equipment.After fault restoration, Fuse is re-replaced, and disconnects switch.
On the other hand, since the earth current of trouble point is capacity current, neutral point is whether through the first reactance grounded Or by the second reactance grounded, which is all inductance current, and direction is with trouble point earth current on the contrary, and trouble point Earth current effective compensation eliminates trouble point ground connection arc current so that trouble point fast arc extinction, both ends three-phase breaker are quickly opened It is disconnected, and ensured the safety of earth point, improve the reliability and security of transmission line of electricity.
Several fault collection units 20 are disposed on the three-phase line between the three-phase breaker of initial and end end, that is, It says, fault collection unit 20 is arranged on the former three-phase line between the first three-phase breaker K1 and the 3rd three-phase breaker K3, And on the spare three-phase line being arranged between the second three-phase breaker K2 and the 4th three-phase breaker K4, fault collection unit 20 For judging the specific location of earth fault generation.
For the fault collection unit 20 including three pairs of single-phase circuit breakers, first in single-phase circuit breaker described in each pair is single-phase Breaker is connected in a certain phase line of former three-phase line, second single-phase circuit breaker is connected on the correspondence phase of spare three-phase line On line, each single-phase circuit breaker output terminal draws an electric connecting terminal, so as to form three pairs of electric connecting terminals, during normal operation, Each single-phase circuit breaker is in closure state.
Specifically, the fault collection unit 20 specifically includes：
First pair of single-phase circuit breaker is made of the first single-phase circuit breaker 211 and the second single-phase circuit breaker 212, and described Two contacts 213,214 of one single-phase circuit breaker 211 are connected in the first phase line of former three-phase line, the second single-phase open circuit Two contacts 215,216 of device 212 are connected in the first phase line of spare three-phase line；
Second pair of single-phase circuit breaker, is made of the 3rd single-phase circuit breaker 221 and the 4th single-phase circuit breaker 222, and described Three single-phase circuit breakers 221 are connected in the second phase line of former three-phase line, and the 4th single-phase circuit breaker 222 is connected on spare three In second phase line of phase line；
3rd pair of single-phase circuit breaker, is made of the 5th single-phase circuit breaker 231 and the 6th single-phase circuit breaker 232, and described Five single-phase circuit breakers 231 are connected on the third phase line of former three-phase line, and the 6th single-phase circuit breaker 232 is connected on spare three On the third phase line of phase line.
In the present embodiment, according to the length of circuit between three-phase line head and the tail both ends, to equidistantly being divided on three-phase line Several nodes are set there are one fault collection unit 20 at the same node on former three-phase line and spare three-phase line, from And the fault collection unit 20 is equidistantly disposed on the three-phase line.First single-phase circuit breaker 211 is defeated Outlet draws the first electric connecting terminal 217, and 212 output terminal of the second single-phase circuit breaker draws the second electric connecting terminal 218, and described the Three single-phase circuit breakers, 221 output terminal draws the 3rd electric connecting terminal 227, and 222 output terminal of the 4th single-phase circuit breaker draws the 4th Electric connecting terminal 228,231 output terminal of the 5th single-phase circuit breaker draw the 5th electric connecting terminal 237, the 6th single-phase circuit breaker 232 output terminals draw the 6th electric connecting terminal 238.
Failure detector include one insulation scanning platform 30, it is described insulation scanning platform 30 on longitudinally through open up it is several To conductive through hole 34, each conductive through hole 34 is arranged at intervals, as shown in the figure, each pair of conductive through hole along insulation scanning platform 30 length direction opens up successively, and conductive through hole is a hollow conducting post, and hollow conducting post is together with insulation scanning platform Shaping, and the hollow conducting post upper end protrudes from the insulation 30 upper surface certain distance of scanning platform, each electricity Connecting pin is electrically connected to a conductive column with conductive through hole cooperation, same a pair electricity on the fault collection unit Connecting pin is plugged in by the conductive column in same a pair conductive through hole 34 on failure detector successively so that is electrically connected It connects end to be conductively connected with corresponding conductive through hole, conductive column is plugged in from insulation scanning platform bottom in conductive through hole, by leading Electric column electrical connection conductive through hole and electric connecting terminal, facilitate the connection of each electric connecting terminal and the scanning platform that insulate, and insulation scanning is flat Platform can be general.
Insulation scanning platform 30 upper surface offers one first groove 31 along its length, between the conductive through hole 34 Every the both sides for being arranged on first groove 31, so as to form two rows of conductive through holes 34 in the first groove both sides, first row is conductive Through hole is correspondingly connected with a certain phase of former three-wire line, and second row conductive through hole is correspondingly connected with the correspondence phase of spare three-phase line, institute The center that the first groove 31 is located at the insulation scanning platform upper surface width direction is stated, one is provided in first groove 31 First straight line driving mechanism and a first straight line displacement ball bar ruler 313, the direction of the first straight line displacement ball bar ruler 313 and institute The length direction for stating insulation scanning platform is consistent.
A guiding moved back and forth along first groove 31 is provided on the movable block of the first straight line driving mechanism Block 126 is equipped with the conductive contact end 321 and 322 that a pair of of insulation gap is set on the guide pad, is set in the guide pad There is one first reading head, first reading head is set on the first straight line displacement ball bar ruler 313, for measuring guide pad 126 displacement distance and position, the input terminal of the first one selection detection unit of the connection of conductive contact end 321, second The conductive contact end 322 connects the output terminal of the selection detection unit, and a pair of conductive contact end is straight by described first Line driving mechanism driving successively with each opposing sidewalls conductive contact to the conductive through hole protruding end.
Specifically, the first straight line driving mechanism includes a driving motor 311, the driving motor 311 is arranged on institute 30 end of insulation scanning platform is stated, one is provided in first groove along its length and drives axis connection with the driving mechanism Screw 312, be arranged with a movable block on the screw 312, driving motor driving screw rotation can drive movable block the Move back and forth in one groove, the guide pad 126 is arranged on the upper end of first straight line driving mechanism movable block, so as to pass through driving Mechanism controls guide pad moves back and forth along the first groove, and 126 bottom of guide pad laterally opens up pass through aperture, and described first Reading head is arranged on the through hole periphery, and the first straight line displacement ball bar ruler 313 is arranged in parallel in 312 one side of screw First groove in, the guide pad is set in by the through hole on the first straight line displacement ball bar ruler, so as to When guide pad is driven to move back and forth along the first groove, the first reading head can read guide pad displacement distance and institute it is in place Put, and then displacement distance to conductive contact end and present position are accurately controlled, with it is selective with each to described conductive logical Hole conductive contact gathers the electric signal between each pair of electric connecting terminal into selection detection unit.
That is, the input of the selection detection unit, output terminal with two a pair of conductive through holes with protruding Conductive contact is held, so as to which current signal between same phase on original three-phase line at same node and spare three-phase line be collected In one selection detection unit, for analyzing failure source position.
A pair of conductive contact end is arranged on the guide pad upper end, and with guide pad synchronizing moving, and the conduction Contact jaw protrudes from insulation scanning platform upper surface certain distance so that at conductive contact end and the protruding end of conductive through hole In same level height, convenient for conductive contact end and conductive through hole protruding end conductive contact, a pair of 321 He of conductive contact end 322 it is symmetrical it is discrete be arranged on the 126 upper end both sides of guide pad, be provided with a collets between a pair of conductive contact end, 321 and 322 insulation gap of conductive contact end is set, a conductive contact head is provided on each conductive contact end, it is described Conductive contact end is contacted by the conductive contact head with each conductive through hole protruding end sliding conduction.
The conductive contact head includes fixed conductive seat 121, conducting rod 122, sliding conduction seat 123 and conductive boots 124, institute It states fixed conductive seat to connect on the conductive contact end, the conducting rod is vertically set on the center of the fixed conductive seat, institute It states conductive boots to be arranged on the sliding conduction seat, the sliding conduction cover for seat sets activity on the conducting rod, the slip Conductive seat and the conducting rod resilient conductive contact, to provide buffer distance, the conduction boots are provided with one and the electrical contact The guide groove being slidably matched is held, is provided on the outside of the guide groove and imports angle, in favor of conductive column and conductive contact head sliding contact, institute It states and a conductive cambered surface 125 being recessed inwardly is provided in guide groove, the conduction cambered surface passes through an elastic component 127 and the guide groove bottom Portion is conductively connected.
The conduction cambered surface 125 is slided with the conductive through hole protruding end to be bonded, when driving motor 311 drives guide pad to move When dynamic, 321 and 322 synchronizing moving of conductive contact end, until protruding end in contact with a pair of conductive through hole, at this point, conductive through hole side Wall is slided by importing angle in guide groove, and conductive contact head conductive contact, due to the sliding conduction seat and the conducting rod Resilient conductive contact, and the conductive cambered surface is connected by an elastic component 127 with the guide groove bottom conductive, passes through two-stage elasticity Contact effectively absorbs overtravel or the deficient stroke between conductive cambered surface 125 and conductive through hole protruding end so that conductive through hole is convex Outlet side wall forms effective conductive contact with conductive cambered surface 125, with continuing to move to for conducting block, realizes selection detection unit Gather the electric signal between two each phases of three-phase line at each node.
Specifically, current embodiment require that three failure detectors, a failure detector is for two three-phases of acquisition Current signal on circuit at same node between a certain phase, three failure detectors can gather same on two three-phase lines Current signal at one node between each phase.
It is equidistantly several to conductive through hole 34 through opening up on insulation scanning platform in the failure detector, and pass through The upper and lower surface of insulation scanning platform is worn, conductive through hole described in each pair is arranged on the first groove both sides, is formed two rows of parallel Conductive through hole, the distance between a pair of conductive through hole lateral wall in the distance between a pair of conductive contact end one Cause so that a pair of conductive contact end in moving process, just with the opposing sidewalls conductive contact of a pair of conductive through hole.
Insulation gap is set between each conductive through hole, the first electrical connection on each fault collection unit 20 217 and second electric connecting terminal 218 of end connects a conductive column respectively, the first electric connecting terminal on each fault collection unit 20 217 and second electric connecting terminal 218 pass through respective conductive column successively conductive plug connection to first failure detector On the conductive through hole in, the 3rd electric connecting terminal 227 and the 4th electric connecting terminal 228 on each fault collection unit 20 By in the conductive through hole on respective conductive column successively conductive plug connection to second failure detector, respectively The 5th electric connecting terminal 237 and the 6th electric connecting terminal 238 on a fault collection unit 20 by respective conductive column successively In the conductive through hole on conductive plug connection to the 3rd failure detector.
Each conductive column is inserted into from the bottom of insulation scanning platform in conductive through hole, and the length of each conductive column is less than The depth of conductive through hole so that leave space in the conductive through hole upper end for being inserted into conductive column.
Specifically, as shown in the figure, first insulation scanning platform includes first pair of conductive through hole 341,342, second pair is led Electric through-hole 343,344, the 3rd pair of conductive through hole 345,346, and so on, first fault collection unit 20 is arranged on first segment At point, second failure collecting unit 20 is arranged at section point, and so on, the on first fault collection unit 20 One electric connecting terminal 217 is plugged to 341 bottom of conductive through hole by conductive column, and the second electric connecting terminal 218 is plugged to by conductive column 342 bottom of conductive through hole, the first electric connecting terminal 217 on second failure collecting unit 20 are plugged to conductive logical by conductive column 343 bottom of hole, the second electric connecting terminal 218 are plugged to 344 bottom of conductive through hole by conductive column；3rd fault collection unit 20 On the first electric connecting terminal 217 345 bottom of conductive through hole is plugged to by conductive column, the second electric connecting terminal 218 passes through conductive column 346 bottom of conductive through hole is plugged to, and so on, the first electric connecting terminal 217 and the second electricity on whole fault collection units 20 Connecting pin 218 is conductive successively to be plugged in the conductive through hole for the scanning platform that insulate on first failure detector, whole failures Conduction is plugged to second failure detection dress successively for the 3rd electric connecting terminal 227 and the 4th electric connecting terminal 228 on collecting unit 20 In the conductive through hole for putting insulation scanning platform, the 5th electric connecting terminal 237 and the 6th on whole fault collection units 20 is electrically connected Connecing end 238, conduction is plugged in the conductive through hole for the scanning platform that insulate on first failure detector successively.
The length direction of fault isolation device along insulation scanning platform, which moves, is arranged on insulation 30 upper table of scanning platform Face, in the present embodiment, the width first end in the insulation scanning platform upper surface offers one second groove 33, described The width second end of insulation scanning platform upper surface offers one the 3rd groove 36, and one is provided in second groove 33 Second straight line driving mechanism, the 3rd groove 36 is interior to be equipped with second straight line displacement ball bar ruler, the fault isolation device first End is arranged on the movable block of the second straight line driving mechanism, passes through second straight line driving mechanism driving malfunction isolating device edge It the second groove 33 and the 3rd groove 36 in 30 upper surface of insulation scanning platform to move back and forth, the second of the fault isolation device End is provided with the second reading head, and second reading head is set on the second straight line displacement ball bar ruler, with Fault Isolation The movement of device measures displacement distance and the place of fault isolation device by second straight line displacement ball bar ruler and the second reading head Position is accurately controlled with the displacement distance to fault isolation device and position.
Longitudinal extension is provided with one and is conductively connected arm on the fault isolation device, and the conductive contact arm can be swept along insulation Retouch the width movement of platform, and the straight line between the length for being conductively connected arm and continuous three conductive through holes Spacing is consistent, and the arm both ends that are conductively connected are vertically arranged with a conductive connection-peg respectively, the diameter of the conduction connection-peg with The internal diameter of the conductive through hole is consistent so that conductive connection-peg is matched with conductive through hole, the conduction connection-peg and the conduction Through hole selective conductivity grafting.
After grafting conductive column, space is left on each conductive through hole top, when conductive connection-peg is inserted into corresponding conduction The upper end of through hole, you can the electric connecting terminal that position is connected with conductive column is conductively connected, for being conductively connected two nodes, The source of trouble is cut off.
Specifically, the fault isolation device includes：
Stent is made of, the branch two discrete supporting rods 50 and the guide rod 62 being connected between supporting rod 50 Frame is erected at the insulation scanning platform upper surface by the supporting rod 50, and the guide rod 62 is with insulating on scanning platform Surface is spaced apart, and the direction of the guide rod 62 is consistent with the width of the insulation scanning platform, first The supporting rod 50 is connected on the movable block of the second straight line driving mechanism, and one is provided on second supporting rod 50 Sliding block, the sliding block are arranged slip on the second straight line displacement ball bar ruler, and second reading head is arranged on the sliding block Inside, and the second reading head envelope is in the periphery of the second straight line displacement ball bar ruler, when second straight line driving mechanism is lived When motion block moves back and forth in the second groove, you can drive entire fault isolation device in insulation scanning platform upper surface along exhausted The length direction of edge scanning platform moves back and forth, and in the process, second straight line displacement ball bar ruler and the second reading head are adopted in real time Collect displacement distance and the present position of fault isolation device, to feed back in controller, further to the shifting of fault isolation device Dynamic distance and present position are accurately controlled；
First telescoping drive mechanism 61 is arranged on the guide rod 62, and first telescoping drive mechanism stretches End is movably set on the guide rod 62, and the telescopic end of the first telescoping drive mechanism 61 moves back and forth on guide rod 62, and The distance of stretch out and draw back of first telescoping drive mechanism 61 is not less than the distance between a pair of described conductive contact end；
Second telescoping drive mechanism 60 is vertically set on the telescopic end of first telescoping drive mechanism 61, first Telescoping drive mechanism 61 controls the second telescoping drive mechanism 60 to move back and forth on guide rod 62, second telescoping drive mechanism 60 telescopic end is towards the insulation scanning platform upper surface；And
One is conductively connected arm 70, and length direction is consistent with the length direction of the insulation scanning platform, and the conduction is even It connects arm center to be arranged on the telescopic end of second telescoping drive mechanism, one is conductively connected the conductive connection-peg 80 of 70 both sides of arm The distance between straight line spacing between continuous three conductive through holes it is consistent, and the conductive connection-peg 80 with it is described Conductive through hole matches, and when conductive connection-peg 80 is plugged in conductive through hole, conductive connection-peg 80 is conductive with the conductive through hole Connection, is conductively connected arm and is controlled by the second telescoping drive mechanism, moved back and forth in a longitudinal direction, and the conduction connection-peg 80 selects Selecting property is plugged on from insulation scanning platform upper surface in the conductive through hole, thus by two conductive through holes by being conductively connected arm 70 are conductively connected.
It is conductively connected arm 70 to adjust by the first telescoping drive mechanism 61 and is in first row conductive through hole or second row Above conductive through hole, conductive connection-peg 80 is adjusted by second straight line driving mechanism and is in above any two conductive through holes, is passed through Second telescoping drive mechanism 60 adjusts the height of conductive connection-peg 80 so that conductive connection-peg 80 is inserted into leading for corresponding position In electric through-hole, with the conductive through hole conductive contact at the position.
Specifically, as shown in the figure, when drive guide pad movement when, two 321 and 322 synchronizing movings of conductive contact end, and With each pair of conductive through hole protruding end selective exposure, when adjust guide pad position when, you can so that 321 He of conductive contact end 322 is conductive with a pair of conductive through hole protruding end conductive contact, such as conductive contact end 321 and 341 protruding end of conductive through hole simultaneously Contact, meanwhile, conductive contact end 322 simultaneously with 342 protruding end conductive contact of conductive through hole, due to leading in conductive through hole 341 Electric column is connected with the first electric connecting terminal 217 on first fault collection unit 20, the conductive column in conductive through hole 342 and first The second electric connecting terminal 218 on a fault collection unit 20 connects, and therefore, selects detection unit, that is, measurable first electric connecting terminal 217 and the second electric signal between electric connecting terminal 218, i.e., the electric signal at first node between two the first phases of three-phase line, With the movement of guide pad, two conductive contact ends 321 and 322 and lower a pair of of conductive through hole protruding end conductive contact, selection inspection The electric signal between two the first phases of three-phase line at unit acquisition section point is surveyed, and so on, the second failure detector On selection detection unit gather electric signal at each node between two the second phases of three-phase line, the 3rd failure detector On selection detection unit gather electric signal at each node between two three-phase line third phases, first straight line displacement ball bar Ruler and the first reading head are used cooperatively, accurately to control the position of guide pad so that every time can at conductive contact end 321 and 322 With a pair of conductive through hole protruding end conductive contact, to gather the electric signal between the same phase of two-way three-phase line.
In the present embodiment, the selection detection unit include a first resistor R1 for being sequentially connected in series setting, warning light 51, Current acquisition unit 52 and second resistance R2, first resistor R1 and second resistance R2 are big resistance so that when generation earth fault When, big resistance grounded system is formed by first resistor R1 and second resistance R2, the electric current that current acquisition unit 52 collects is i.e. To pass through the earth current of first resistor R1 and second resistance R2.The first resistor connects first conductive contact head, described Second resistance connects second conductive contact head, that is, by selecting detection unit that will be led between two a certain phases of three-phase line It is logical, the electric current between two a certain phases of three-phase line is gathered by current acquisition unit 52, once there is electric current to pass through warning light 51 It lights, sends prompting, during normal operation, electric current will not be generated between two any phases of three-phase line, after earth fault occurs, Electric current can be generated between failure phase on two three-phase lines.
After earth fault occurs, the three-phase line that earth fault occurs is cut off, for example, detecting former three-phase line After earth fault occurs for the first phase, by the first three-phase breaker K1 and the 3rd three-phase breaker K3 by former three-phase line from transmission of electricity Cut off in circuit, by spare three-phase line keep transmission line of electricity normal operation, failure occur after, by failure detector come The current signal on two three-phase lines between the first phase at each node is quickly detected, ball bar ruler and the are moved by first straight line One reading head controls the displacement distance of guide pad, realizes current measurement between accurate quickly two-way the first phase of three-phase line, After earth fault occurs for former the first phase of three-phase line, spare the first phase of three-phase line normal operation, when by selecting detection single Member is connected on two three-phase lines after the first phase, and spare the first phase of three-phase line is arrived by first resistor R1 and second resistance R2 The earth point of former the first phase of three-phase line forms big resistance grounded system, and the earth current closer to earth point is bigger, selection inspection It is the earth current at different nodes to survey the current signal that unit checks, and finally detects the section of two contact electric current maximums Point, i.e. earth point are happened on the circuit between the two nodes.
In above-mentioned technical proposal, after earth point is judged, the list on the two neighboring fault collection unit of earth point is disconnected Phase breaker, fault isolation device start to act, and fault isolation device position and movement are adjusted by second straight line driving mechanism Distance adjusts lateral position and the height of conductive connection-peg 80 by the first telescoping drive mechanism and the second telescoping drive mechanism, It is corresponding finally so that first conductive connection-peg 80 is inserted into electric connecting terminal on the second failure collecting unit of earth point upstream In conductive through hole, until with the conductive through hole conductive contact at the position, second conductive connection-peg 80 is inserted into earth point On the fault collection unit of first, downstream in the corresponding conductive through hole of electric connecting terminal, until conductive with the conductive through hole at the position Contact so as to recover to be conductively connected by earth point front and rear sides, and is effectively cut off earth point by two single-phase circuit breakers, After earth point is cut off from circuit, you can control the first three-phase breaker K1 and the 3rd three-phase breaker K3 is simultaneously turned on, and two Road three-phase line recovers conducting, avoids the long-term independent operating of single channel three-phase line, because earth fault once occurs again, single channel three The entire transmission line of electricity that phase line independently supports can be powered off all, and transmission line of electricity is caused to be paralysed.Earth point is cut off from circuit Afterwards, you can faulty line is carried out maintenance, does not influence the normal operation of transmission line of electricity, it, will after the completion of faulty line carries out maintenance Two single-phase circuit breakers disconnected are closed, and autopatching equipment both ends are disconnected from corresponding electrical contact end, you can will be cut The circuit removed is linked into the three-phase line of operation again, and entire transmission line of electricity can recover as before.
As shown in fig. 7, the source of trouble is happened between the section point and the 3rd node of the first phase on former three-phase line, two A conduction connection-peg 80 is plugged in conductive through hole 341 and 345, disconnects the 3rd single-phase circuit breaker and the 5th single-phase circuit breaker, will Circuit between the section point of failure phase line and the 3rd node is cut off from supply line, does not influence the normal fortune of supply line Row.
From the above mentioned, the present invention quickly judges the nature of trouble of transmission line of electricity, and may recognize that failure occurred Specific circuit quickly finds failure and is solved in time, fault coverage is avoided further to expand to provide staff, and then It ensure that the reliability of transmission line of electricity；After failure occurs, transmission line of electricity of the invention can position the spot of failure, and will Failure spot is effectively cut off, so as to improve the efficiency of the solution failure of staff；Meanwhile transmission line of electricity of the invention is adopted The three-phase power line being arranged in parallel with two-way wherein not interfering with the normal work of transmission line of electricity after breaking down all the way, carries High transmission line of electricity power supply continuity, meanwhile, after failure occurs, by fault collection unit, failure detector and failure every Trouble point from power grid can be cut off from device, ensure to carry out breakdown maintenance in the case of transmission line of electricity normal power supply, from And the technical issues of solving power failure operation and influencing power supply.
Although the embodiments of the present invention have been disclosed as above, but its be not restricted in specification and embodiment it is listed With it can be fully applied to various fields suitable for the present invention, for those skilled in the art, can be easily Realize other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, it is of the invention and unlimited In specific details and shown here as the legend with description.

Claims (10)

1. a kind of transmission line of electricity Self-Protection Subsystem, which is characterized in that including：
Spare three-phase line, on the former three-phase line being arranged in parallel, the three-phase line input terminal is connected with power end, described The output terminal of three-phase line is connected with electrical equipment, and former three-phase line initial and end end and spare three-phase line initial and end both ends are set respectively It puts there are one three-phase breaker, the first electrical signal collection unit is provided on the neutral point of the three-phase line；
Several fault collection units are disposed on the three-phase line between the three-phase breaker of initial and end end, and the failure is adopted Collect unit including three pairs of single-phase circuit breakers, first single-phase circuit breaker in single-phase circuit breaker described in each pair is connected on former triple line In a certain phase line on road, second single-phase circuit breaker be connected in the correspondence phase line of spare three-phase line, it is each described single-phase disconnected Road device output terminal draws an electric connecting terminal, so as to form three pairs of electric connecting terminals, the input terminal parallel wire of three-phase line described in two-way On be provided with the second electrical signal collection unit, being provided with the 3rd electric signal on the output terminal parallel wire of three-phase line described in two-way adopts Collect unit；
Failure detector, it is longitudinally several to leading through opening up on the insulation scanning platform including an insulation scanning platform Electric through-hole, each conductive through hole are arranged at intervals, and the conductive through hole upper end protrudes from the insulation scanning platform upper table Face certain distance, the insulation scanning platform upper surface offer one first groove, the conductive through hole interval along its length It is arranged on the both sides of first groove, first groove is located at the insulation scanning platform upper surface center, and described first A first straight line driving mechanism and a first straight line displacement ball bar ruler are provided in groove, the first straight line displacement ball bar ruler Direction is consistent with the length direction of the insulation scanning platform；An edge is provided on the movable block of the first straight line driving mechanism The guide pad that first groove moves back and forth is equipped with the conductive contact end that a pair of of insulation gap is set on the guide pad, One first reading head is provided in the guide pad, first reading head is set on the first straight line displacement ball bar ruler, The input terminal of the first one selection detection unit of conductive contact end connection, the second conductive contact end connection selection inspection Survey the output terminal of unit；Wherein, each electric connecting terminal is electrically connected to a conductive column with conductive through hole cooperation, institute The same a pair electric connecting terminal stated on fault collection unit is plugged on failure detector successively by the conductive column With in a pair of conductive through hole, a pair of conductive contact end is driven by the first straight line driving mechanism successively with each to institute State the opposing sidewalls conductive contact of conductive through hole protruding end；And
Fault isolation device moves along the length direction of insulation scanning platform and is arranged on the insulation scanning platform upper surface, The width first end of the insulation scanning platform upper surface offers one second groove, the insulation scanning platform upper surface Width second end offer one the 3rd groove, a second straight line driving mechanism is provided in second groove, it is described Second straight line displacement ball bar ruler is equipped in 3rd groove, the fault isolation device first end is arranged on the second straight line driving On the movable block of mechanism, the second end of the fault isolation device is provided with the second reading head, and second reading head is set in On the second straight line displacement ball bar ruler, on the fault isolation device longitudinal extension be provided with one and be conductively connected arm, it is described to lead Electrical contact arm can be moved along the width of insulation scanning platform, and described in the length for being conductively connected arm and continuous three Straight line spacing between conductive through hole is consistent, and the arm both ends that are conductively connected are vertically arranged with a conductive connection-peg respectively, described The diameter of conductive connection-peg is consistent with the internal diameter of the conductive through hole, and the conduction connection-peg is selectively led with the conductive through hole Electrical plug.
2. transmission line of electricity Self-Protection Subsystem as described in claim 1, which is characterized in that the original three-phase line head end is provided with First three-phase breaker, the spare three-phase line head end are provided with the second three-phase breaker, and the original three-phase line tail end is set The 3rd three-phase breaker is equipped with, the spare three-phase line tail end is provided with the 4th three-phase breaker, wherein, the first three-phase break Device and the second three-phase breaker are arranged on the input parallel connected end downstream of three-phase line described in two-way, the 3rd three-phase breaker and the 4th Three-phase breaker is arranged on the output-parallel end upstream of three-phase line described in two-way.
3. transmission line of electricity Self-Protection Subsystem as claimed in claim 2, which is characterized in that each fault collection unit is successively It is arranged on the three-phase line between first three-phase breaker and the 3rd three-phase breaker, the fault collection unit is specific Including：
First pair of single-phase circuit breaker, is made of the first single-phase circuit breaker and the second single-phase circuit breaker, the first single-phase open circuit Device is connected in the first phase line of former three-phase line, and second single-phase circuit breaker is connected on the first phase line of spare three-phase line On；
Second pair of single-phase circuit breaker, is made of the 3rd single-phase circuit breaker and the 4th single-phase circuit breaker, the 3rd single-phase open circuit Device is connected in the second phase line of former three-phase line, and the 4th single-phase circuit breaker is connected on the second phase line of spare three-phase line On；
3rd pair of single-phase circuit breaker, is made of the 5th single-phase circuit breaker and the 6th single-phase circuit breaker, the 5th single-phase open circuit Device is connected on the third phase line of former three-phase line, and the 6th single-phase circuit breaker is connected on the third phase line of spare three-phase line On.
4. transmission line of electricity Self-Protection Subsystem as claimed in claim 3, which is characterized in that between each described fault collection unit etc. Away from being disposed on the three-phase line, the first single-phase circuit breaker output terminal draws the first electric connecting terminal, and described second Single-phase circuit breaker output terminal draws the second electric connecting terminal, and the 3rd single-phase circuit breaker output terminal draws the 3rd electric connecting terminal, institute It states the 4th single-phase circuit breaker output terminal and draws the 4th electric connecting terminal, the 5th single-phase circuit breaker output terminal draws the 5th electrical connection End, the 6th single-phase circuit breaker output terminal draw the 6th electric connecting terminal, a conductive column are connected on each electric connecting terminal.
5. transmission line of electricity Self-Protection Subsystem as claimed in claim 4, which is characterized in that several equidistant to the conductive through hole Interval is opened on the insulation scanning platform, and through the upper and lower surface of insulation scanning platform, conductive through hole described in each pair point It is listed between the distance between the first groove both sides, a pair of conductive contact end and a pair of conductive through hole lateral wall Distance it is consistent, the first electric connecting terminal and the second electric connecting terminal on each fault collection unit by the conductive column according to Secondary conduction is plugged to each in the conductive through hole, each fault collection unit on first insulation scanning platform On the 3rd electric connecting terminal and the 4th electric connecting terminal by the conductive column successively conduction be plugged to second it is described insulation scan It is each in the conductive through hole on platform, the 5th electric connecting terminal and the 6th electric connecting terminal on each fault collection unit It is plugged to by the conductive column successively conduction each in the conductive through hole on the 3rd insulation scanning platform.
6. transmission line of electricity Self-Protection Subsystem as claimed in claim 5, which is characterized in that the first straight line driving mechanism includes One driving motor, the driving motor are arranged on the insulation scanning platform end, are set along its length in first groove A screw with driving mechanism driving axis connection is equipped with, is arranged with a movable block on the screw, the guide pad is set In the upper end of first straight line driving mechanism movable block, and the guide pad bottom opens up pass through aperture, and first reading head is set It puts in the through hole periphery, the first straight line displacement ball bar ruler is arranged in parallel in first groove of the screw one side In, the guide pad is set in by the through hole on the first straight line displacement ball bar ruler.
7. transmission line of electricity Self-Protection Subsystem as claimed in claim 6, which is characterized in that a pair of conductive contact end is arranged on The guide pad upper end, and the conductive contact end protrudes from insulation scanning platform upper surface certain distance, described in a pair Conductive contact end is symmetrically discrete to be arranged on the guide pad both sides, and a collets are provided between a pair of conductive contact end, A conductive contact head is provided on the conductive contact end, the conductive contact end passes through the conductive contact head and each conduction The sliding conduction contact of through hole protruding end.
8. transmission line of electricity Self-Protection Subsystem as claimed in claim 7, which is characterized in that the conductive contact head, which includes fixation, leads Electric seat, conducting rod, sliding conduction seat and conductive boots, the fixed conductive seat are fixed on the conductive contact end, the conduction Bar is vertically set on the center of the fixed conductive seat, and the conduction boots are arranged on the sliding conduction seat, and the slip is led Electric cover for seat sets activity on the conducting rod, the sliding conduction seat and the conducting rod resilient conductive contact, the conduction boots The guide groove of one and the conductive through hole snug engagement are provided with, is provided on the outside of the guide groove and imports angle, in the guide groove A conductive cambered surface being recessed inwardly is provided with, the conduction cambered surface is connected by an elastic component with the guide groove bottom conductive.
9. transmission line of electricity Self-Protection Subsystem as claimed in claim 8, which is characterized in that the fault isolation device includes：
Stent, by two discrete supporting rods and the guide post group being connected between supporting rod into the stent passes through described Bracing member is located at the insulation scanning platform upper surface, the guide rod and insulation one spacing of scanning platform upper surface interval From, and the direction of the guide rod is consistent with the width of the insulation scanning platform, first supporting rod is connected to On the movable block of the second straight line driving mechanism, a sliding block is provided on second supporting rod, the sliding block is arranged cunning It moves on the second straight line displacement ball bar ruler, second reading head is arranged on inside the sliding block, and second reading Head envelope is in the periphery of the second straight line displacement ball bar ruler；
First telescoping drive mechanism is arranged on the guide rod, the telescopic end movable sleeve of first telescoping drive mechanism It is located on the guide rod, the distance of stretch out and draw back of first telescoping drive mechanism is not less than between a pair of conductive contact end Distance；
Second telescoping drive mechanism is vertically set on the telescopic end of first telescoping drive mechanism, and described second is flexible The telescopic end of driving mechanism is towards the insulation scanning platform upper surface；And
One is conductively connected arm, and length direction is consistent with the length direction of the insulation scanning platform, described to be conductively connected in arm The heart is arranged on the telescopic end of second telescoping drive mechanism, and one is conductively connected the distance between conductive connection-peg of arm both sides Straight line spacing between continuous three conductive through holes is consistent, and the conductive connection-peg and the conductive through hole phase Match somebody with somebody, the conduction connection-peg selectivity is plugged on from insulation scanning platform upper surface in the conductive through hole.
10. transmission line of electricity Self-Protection Subsystem as claimed in claim 9, which is characterized in that the selection detection unit includes One is sequentially connected in series first resistor, warning light, current acquisition unit and the second resistance of setting, and the first resistor connects first Conductive contact head, the second resistance connect second conductive contact head.
CN201711431905.4A 2017-12-26 2017-12-26 Self-protection system for power transmission line Active CN108075452B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110854691A (en) * 2019-11-01 2020-02-28 广东电网有限责任公司 Switch board with automated inspection function

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101551243A (en) * 2009-04-27 2009-10-07 洛阳乾禾仪器有限公司 Ball bar ruler
CN102142674A (en) * 2011-01-26 2011-08-03 江苏镇安电力设备有限公司 Method for selectively clearing single-phase ground fault of ship shore power system
CN102656762A (en) * 2009-12-16 2012-09-05 西门子公司 Protection for parallel lines in an electrical power supply system
CN104052035A (en) * 2014-07-09 2014-09-17 国家电网公司 Same-tower double-circuit line single-phase grounded reactance relay
CN205406392U (en) * 2016-03-03 2016-07-27 贝司特电气有限公司 Gas -insulated exchanges high voltage circuit breaker

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101551243A (en) * 2009-04-27 2009-10-07 洛阳乾禾仪器有限公司 Ball bar ruler
CN102656762A (en) * 2009-12-16 2012-09-05 西门子公司 Protection for parallel lines in an electrical power supply system
CN102142674A (en) * 2011-01-26 2011-08-03 江苏镇安电力设备有限公司 Method for selectively clearing single-phase ground fault of ship shore power system
CN104052035A (en) * 2014-07-09 2014-09-17 国家电网公司 Same-tower double-circuit line single-phase grounded reactance relay
CN205406392U (en) * 2016-03-03 2016-07-27 贝司特电气有限公司 Gas -insulated exchanges high voltage circuit breaker

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110854691A (en) * 2019-11-01 2020-02-28 广东电网有限责任公司 Switch board with automated inspection function

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