CN109061358A - A kind of single-phase transient earthing short-circuit test method and system of transmission line of electricity - Google Patents

A kind of single-phase transient earthing short-circuit test method and system of transmission line of electricity Download PDF

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Publication number
CN109061358A
CN109061358A CN201811244566.3A CN201811244566A CN109061358A CN 109061358 A CN109061358 A CN 109061358A CN 201811244566 A CN201811244566 A CN 201811244566A CN 109061358 A CN109061358 A CN 109061358A
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CN
China
Prior art keywords
line
test
vertical wires
striking
insulating cord
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Pending
Application number
CN201811244566.3A
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Chinese (zh)
Inventor
马御棠
李秀婧
马仪
沈志
黄修乾
周仿荣
彭兆裕
潘浩
杨殿成
田小航
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YUNNAN ELECTRIC TECHNOLOGIES Co Ltd
Electric Power Research Institute of Yunnan Power Grid Co Ltd
Electric Power Research Institute of Yunnan Power System Ltd
Charged Operation Branch of Yunnan Power Grid Co Ltd
Original Assignee
YUNNAN ELECTRIC TECHNOLOGIES Co Ltd
Electric Power Research Institute of Yunnan Power System Ltd
Charged Operation Branch of Yunnan Power Grid Co Ltd
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Application filed by YUNNAN ELECTRIC TECHNOLOGIES Co Ltd, Electric Power Research Institute of Yunnan Power System Ltd, Charged Operation Branch of Yunnan Power Grid Co Ltd filed Critical YUNNAN ELECTRIC TECHNOLOGIES Co Ltd
Priority to CN201811244566.3A priority Critical patent/CN109061358A/en
Publication of CN109061358A publication Critical patent/CN109061358A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere

Abstract

The application provides a kind of single-phase transient earthing short-circuit test method and system of transmission line of electricity, and the method first determines the position tested in power transmission line;Equipotential live line work mode is used again, is hung ancillary test shorting stub in testing position, is charged ancillary test shorting stub;The lifting insulating cord of testing equipment is passed through into somersault coaster again, and somersault coaster is connected in ancillary test shorting stub;To make vertical wires charge until vertical wires contact ancillary test shorting stub by lifting insulation wire saws vertical wires in ground location;And by traction insulation wire saws striking line, until striking line makes vertical wires discharge striking line close to vertical wires.The application passes through equipotential live line work mode, it is connected to by coaster on the test section of power transmission line to be detected with lifting by crane insulating cord and traction insulating cord for testing equipment, to form electric discharge in vertical wires and striking line, short circuit simulation is formed, short-circuit test can be implemented under the premise of not having a power failure.

Description

A kind of single-phase transient earthing short-circuit test method and system of transmission line of electricity
Technical field
This application involves High-Voltage Technology field more particularly to a kind of single-phase transient earthing short-circuit test methods of transmission line of electricity And system.
Background technique
Series compensation, referred to as string are mended, and are a kind of that reactive power compensator is idle by the progress of concatenated mode line attachment The technology of compensation.Before string is mended and DC engineering puts into effect, need to carry out the debugging efforts of power transmission line, wherein single-phase wink When ground short circuit test be a most important step in debugging process.In currently existing scheme, carries out short-circuit test, need testing When, first have a power failure to the route tested, when having a power failure, experimental rig is suspended on test position such as short-circuit test frame It sets.Then restore power transmission, short-circuit test frame into brought the striking test wire on a piece-root grafting ground using catapult-launching gear or bow and crossbow device, To form single-phase transient earthing short circuit.
But in practical applications, since series compensation or DC engineering are all important engineerings, route conveying Power is big.If all had a power failure to entire transmission line of electricity when each short-circuit test carries out, other equipment on route certainly will be will affect Normal operation.In the prior art, for the normal operation of equipment, when carrying out short-circuit test, line outage needs will be big The supply load of amount carries out turning to supply by All other routes, and then needs to need by just can be carried out line outage after complicated operation It wants longer time to carry out route electric energy to turn to supply, has seriously affected the efficiency of test and the normal operation of route.
In addition, carrying out man-made chamber in the prior art, the load on transmission line of electricity is more, and the electric energy carried out is needed to turn for getting over More, even if carrying out sub-load transfer, the time for also resulting in transmission line of electricity power failure is very long.That is, how to carry out short-circuit test When avoid having a power failure, become this field technical problem urgently to be resolved.
Summary of the invention
This application provides a kind of single-phase transient earthing short-circuit test method and system of transmission line of electricity, to solve conventional short-circuit The problem of test method needs to have a power failure, and influences test efficiency and route normal operation.
On the one hand, the application provides a kind of single-phase transient earthing short-circuit test method of transmission line of electricity, comprising:
Determine the testing position that single-phase transient earthing short-circuit test is carried out in power transmission line;
Using equipotential live line work mode, ancillary test shorting stub is hung in the testing position, so that auxiliary shorting stub It is connected with transmission line of electricity split conductor, and then ancillary test shorting stub is charged;
The lifting insulating cord of testing equipment is passed through into somersault coaster, uses earth potential working mode by somersault coaster on tower It is connected in the ancillary test shorting stub;The end of the lifting insulating cord extends to ground;
In ground location by the vertical wires of testing equipment described in the lifting insulation wire saws, until the vertical wires Ancillary test shorting stub is contacted, the vertical wires are charged;
In ground location by the striking line in testing equipment described in traction insulation wire saws, until the striking line is close to institute Vertical wires are stated, the vertical wires is made to discharge the striking line.
Optionally, using equipotential live line work mode, the step of testing position hangs ancillary test shorting stub it Before, the method also includes:
Winding protection is implemented to the power transmission line test section of the testing position.
Optionally, in the step of implementing winding protection to the power transmission line test section of the testing position, using aluminium armor tape pair The power transmission line test section is wound, and the aluminium armor tape is made to coat the entire power transmission line test section, and the aluminium armor tape twines It is 30-50cm around length.
Optionally, the lifting insulating cord of testing equipment is passed through into somersault coaster, it will using earth potential working mode on tower The step that somersault coaster is connected in the ancillary test shorting stub includes:
The somersault coaster is connected to the test position using annealed copper wire or with the shorting stub of transmission line of electricity same material On all split conductors set, the coaster is made of metal material that can be conductive;
And by the sliding of the lifting insulating cord in the somersault coaster, by vertical wires contact it is described with Struggle against coaster, so that the vertical wires connect the split conductor by the somersault coaster.
Optionally, the end ground connection of the striking line or connection power transmission tower earthing or grounding means, if the end of the striking line The earthing or grounding means for connecting power transmission tower, the method also includes:
The end of the striking line is connected into the power transmission tower earthing or grounding means, the striking line is tested and is connecting the transmission of electricity Current potential after tower earthing or grounding means;
If the current potential of the striking line is zero, the beginning of the striking line is connected into the lifting insulating cord;
If the current potential of the striking line is not zero, grounding is done into the end of the striking line or by the power transmission tower Grounding is done, and the beginning of the striking line is connected into the lifting insulating cord after being zero in the current potential of the striking line.
Optionally, the lifting insulating cord connect with the traction insulating cord is arranged being twisted on the ground, the method The lifting insulating cord and the traction insulating cord are driven by described be twisted, so as to test described in lifting insulation wire saws The vertical wires of equipment, and make striking line described in the traction insulation wire saws.
On the other hand, the application also provides a kind of single-phase transient earthing short-circuit test system of transmission line of electricity, comprising:
Testing equipment, comprising: ancillary test shorting stub, vertical wires and striking line;Wherein, the auxiliary shorting stub is used In the current potential on split conductor is transferred to the vertical wires and facilitates somersault pulley suspension and fixation;The vertical wires For discharging the striking line;
Ancillary test shorting stub, for carrying out the testing position of single-phase transient earthing short-circuit test in determining power transmission line Afterwards, using equipotential live line work mode, ancillary test shorting stub is hung in the testing position, so that auxiliary shorting stub and transmission of electricity The connection of route split conductor, and then ancillary test shorting stub is charged;
Somersault coaster uses earth potential working for the lifting insulating cord of testing equipment to be passed through somersault coaster on tower Somersault coaster is connected in the ancillary test shorting stub by mode;The end of the lifting insulating cord extends to ground;
Insulating cord is lifted by crane, for vertically the leading by testing equipment described in the lifting insulation wire saws in ground location Line charges the vertical wires until the vertical wires contact ancillary test shorting stub;
Insulating cord is drawn, for passing through the striking in testing equipment described in the traction insulation wire saws in ground location Line, until the striking line makes the vertical wires discharge striking line close to the vertical wires;
Protective device, for implementing winding protection to the testing position, the protective device is to be wrapped around described Aluminium armor tape on the power transmission line test section of testing position.
Optionally, the system also includes being twisted, the lifting insulating cord is connected with the traction insulating cord to be arranged on ground It is twisted described on face, for driving the lifting insulating cord and the traction insulating cord by described be twisted, so that described The vertical wires of testing equipment described in insulation wire saws are hung, and make striking line described in the traction insulation wire saws.
From the above technical scheme, the application provides a kind of single-phase transient earthing short-circuit test method of transmission line of electricity and is System, the method first determine the testing position that single-phase transient earthing short-circuit test is carried out in power transmission line;Equipotential live line work is used again Mode hangs ancillary test shorting stub in testing position, so that auxiliary shorting stub is connected with transmission line of electricity split conductor, Jin Erfu Help test shorting stub electrification;The lifting insulating cord of testing equipment is passed through into somersault coaster again, earth potential working side is used on tower Somersault coaster is connected in ancillary test shorting stub by formula;The end of lifting insulating cord extends to ground;To in ground location By lifting by crane the vertical wires of insulating cord pulling test equipment, until vertical wires contact ancillary test shorting stub, make vertical wires Electrification;And by the striking line in traction insulating cord pulling test equipment, until striking line makes vertical wires close to vertical wires It discharges striking line.
The application is connected testing equipment by coaster by livewire work mode, by lifting insulating cord and traction insulating cord It connects on the test section of power transmission line to be detected, to form electric discharge in vertical wires and striking line, forms short circuit simulation, the method It can implement short-circuit test under the premise of not having a power failure, avoid influencing test efficiency and route normal operation because having a power failure.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the application, letter will be made to attached drawing needed in the embodiment below Singly introduce, it should be apparent that, for those of ordinary skills, without creative efforts, also Other drawings may be obtained according to these drawings without any creative labor.
Fig. 1 is a kind of flow diagram of the single-phase transient earthing short-circuit test method of transmission line of electricity of the application;
Fig. 2 is that the application striking line debugs flow diagram;
Fig. 3 is a kind of structural schematic diagram of the single-phase transient earthing short-circuit test system of transmission line of electricity of the application.
Specific embodiment
Embodiment will be illustrated in detail below, the example is illustrated in the accompanying drawings.In the following description when referring to the accompanying drawings, Unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Implement described in following embodiment Mode does not represent all embodiments consistent with the application.It is only and be described in detail in claims, the application The example of some aspects consistent line and method.
It is the flow diagram of a kind of single-phase transient earthing short-circuit test method of transmission line of electricity referring to Fig. 1.As shown in Figure 1, A kind of single-phase transient earthing short-circuit test method of transmission line of electricity provided by the present application, comprising the following steps:
S1: the testing position that single-phase transient earthing short-circuit test is carried out in power transmission line is determined.
In technical solution provided by the present application, since short-circuit test needs that testing equipment is made to charge and discharge, testing equipment It needs to be grounded and connect power transmission line simultaneously, therefore, the testing position of positioning should be closer to power transmission tower, to carry out testing equipment Connection and grounding on power transmission line.
S2: using equipotential live line work mode, ancillary test shorting stub is hung in the testing position, so that auxiliary is shorted Line is connected with transmission line of electricity split conductor, and then ancillary test shorting stub is charged.
Due to defects many on high voltage alive equipment, it is difficult to be handled using indirect operating method.Therefore it can use Equipotential live line work mode, the electrostatic field for making operating personnel enter charging equipment directly operate, at this moment the current potential of human body and electrical body Difference is necessarily equal to zero.In the application, for the anchor support or portal frame in transmission facility, equipotential live line work personnel can pass through Insulated ladder enters power transmission line test section region;And when for tangent tower in transmission facility, equipotential live line work personnel can pass through Insulated flexible ladder enters power transmission line test section region.
S3: the lifting insulating cord of testing equipment is passed through into somersault coaster, uses earth potential working mode by somersault on tower Coaster is connected in the ancillary test shorting stub;The end of the lifting insulating cord extends to ground.
In the technical solution of the application, the coaster can be the somersault coaster used in high voltage transmission line or fall is sliding Vehicle, the coaster are equipped with for across the round and smooth hole of lifting insulated wire, alloing to lift by crane insulating cord in round and smooth hole smoothly Sliding and change direction.Coaster can be also used for conduction, i.e., the voltage in power transmission line is transmitted in testing equipment.Lifting insulation Rope needs to be made of the preferable material of insulation performance, and has good softness and tensile strength.In this application, Ground potential operator can also be first passed through coaster is mounted on power transmission line, then circle of the insulating cord in the middle part of coaster will be lifted by crane Slide opening, and the end for lifting by crane insulating cord is set on the ground, so as to subsequent carry out towage, can also be dropped using ground potential Low installation risk.
Further, the coaster is connected on all split conductors of the power transmission line test section using annealed copper wire, The coaster is made of metal material that can be conductive;And the sliding by the lifting insulating cord in the coaster, it will The vertical wires contact the coaster, so that the vertical wires connect the split conductor by the coaster.
During the test due to coaster, need to undertake the gravity of lifting insulating cord and testing equipment, and lifting insulation The stress that rope is generated when pullling repeatedly, can make coaster that the coating on power transmission line surface is damaged or destroyed to power transmission line.In order to So that detection process is not damaged the coating of power transmission line or power transmission line surface, before coaster is installed, one can also be taken to power transmission line Fixed safeguard measure, i.e., in the section Example of the application, according to equipotential live line work mode, in the testing position of positioning Before the step of implementing the power transmission line test section of short-circuit test, the method also includes: the power transmission line test section is implemented to wind Protection.
Further, in the step of implementing winding protection to the power transmission line test section, using aluminium armor tape to the transmission of electricity Thread test section is wound, and the aluminium armor tape is made to coat the entire power transmission line test section, and the length of the aluminium armor tape winding is 30-50cm.In the present embodiment, protection is wound to power transmission line test section using aluminium armor tape, it not only can be to avoid test process Power transmission line surface is damaged, and the connection between coaster and power transmission line can be buffered, makes coaster subsequent Traction lifting insulating cord during, coaster is in stable position, so as to vertical wires can be stable touch split conductor.
S4: in ground location by the vertical wires of testing equipment described in the lifting insulation wire saws, until described vertical Conductive contact ancillary test shorting stub charges the vertical wires.
In technical solution provided by the present application, testing equipment may include that area of section is more than 50mm2Annealed copper wire, and With transparent oversheath.Vertical wires are after touching split conductor, or after touching split conductor by coaster, in power transmission line Charge can be transmitted in vertical wires, charge vertical wires also, to pass through voltage in subsequent progress short-circuit test Difference generates electric discharge.
S5: in ground location by the striking line in testing equipment described in traction insulation wire saws, until the striking line leans on The nearly vertical wires, make the vertical wires discharge the striking line.
In the application, the striking line refers to close to the vertical wires, by lifting by crane the traction of insulating cord, makes striking line One end move closer to vertical wires, due to striking line the other end be grounded, striking line can keep zero potential, when striking line When being less than overvoltage requirement close to the distance of vertical wires, the air between striking line and vertical wires is formed breakdown and put Electricity, and it is further violent with the shortening of distance, to meet short-circuit test requirement.
Specifically, in ground location by the striking line in testing equipment described in the traction insulation wire saws, until described Striking line is close to the vertical wires, and in the step of making the vertical wires discharge, the striking line is close to the vertical wires Distance be less than or equal to switching overvoltage required distance;And the striking line is big close to the distance of the vertical wires In or equal to the safe distance that operates over the ground.Safe distance is influenced that different values can be taken by actual environment and transmission facility.
Illustratively, when location of short circuit height above sea level is lower than 1000m, the distance of usual 220kV is 3m, 330kV 4m, 500kV Length be 5m, the distance of 750kV is 8m, and the distance of 1000kV is 9.5m, and the distance of ± 500kV is 6.8m, ± 660kV away from It is that 10.1m should carry out height above sea level coefficient amendment as location of short circuit height above sea level high pressure 1000m from the distance for 9.0m, ± 800kV.
In the section Example of the application, as shown in Fig. 2, the end ground connection of the striking line or connection power transmission tower ground connection Device, if the earthing or grounding means of the end connection power transmission tower of the striking line, the method also includes:
S501: connecting the power transmission tower earthing or grounding means for the end of the striking line, tests the striking line in connection institute Current potential after stating power transmission tower earthing or grounding means;
S502: if the current potential of the striking line is zero, the beginning of the striking line is connected into the lifting insulating cord;
S503: if the current potential of the striking line is not zero, grounding is done into the end of the striking line or will be described Power transmission tower does grounding, and after being zero in the current potential of the striking line beginning connection lifting of the striking line is exhausted Edge rope.
In addition, can guarantee whole safety in order to during lifting insulation wire saws vertical wires or striking line Property, and keep distraction procedure more steady controllable, in the section Example of the application, the lifting insulating cord connection setting exists Being twisted on ground, the method are twisted the vertical wires for driving the lifting to insulate testing equipment described in wire saws by described With striking line.
Based on the above method, the application also provides a kind of single-phase transient earthing short-circuit test system of transmission line of electricity, such as Fig. 3 institute Show, the system comprises:
Testing equipment, comprising: ancillary test shorting stub 11, vertical wires 12 and striking line 13;Wherein, the auxiliary is short Wiring 11 is used to the current potential on split conductor 0 being transferred to the vertical wires 12;The vertical wires 12 to described for drawing Camber line 13 discharges;
Ancillary test shorting stub 11, for carrying out the testing position of single-phase transient earthing short-circuit test in determining power transmission line Afterwards, using equipotential live line work mode, ancillary test shorting stub 11 is hung in the testing position, so that ancillary test shorting stub 11 and transmission line of electricity split conductor 0 connect, and then charge the ancillary test shorting stub 11;
Somersault coaster 2 is made on tower using ground potential for the lifting insulating cord 31 of testing equipment to be passed through somersault coaster Somersault coaster 2 is connected in the ancillary test shorting stub 11 by industry mode;The end of the lifting insulating cord 31 extends to ground Face;
Insulating cord 31 is lifted by crane, for drawing the vertical of the testing equipment by the lifting insulating cord 31 in ground location Conducting wire charges the vertical wires until the vertical wires 12 contact ancillary test shorting stub 11;
Insulating cord 32 is drawn, for drawing drawing in the testing equipment by the traction insulating cord 32 in ground location Camber line 13, until the striking line 13 makes the vertical wires 12 discharge striking line 13 close to the vertical wires 12;
Protective device 4, for implementing winding protection to the testing position, the protective device 4 is is wrapped around in institute State the aluminium armor tape on the power transmission line test section of testing position.
Further, the system also includes being twisted 5, the lifting insulating cord 31 and the traction insulating cord 32 connection are set Set on the ground it is described be twisted 5, for being twisted the 5 drivings lifting insulating cord 31 and the traction insulating cord by described 32, so that the lifting insulating cord 31 draws the vertical wires 12 of the testing equipment, and lead the traction insulating cord 31 Draw the striking line 13.
Further, the system also includes the fixation insulating cord 33 that 12 bottom end of vertical wires is arranged in, the fixation is exhausted Edge rope 33 is used for the position of fixed vertical conducting wire 12;The system also includes the U-loop being connect with somersault coaster 2 and and connect Ground metal block 6 is respectively used to connection lifting insulating cord 31 and traction insulating cord 32, wherein is connected with lifting insulating cord 31 U-loop other than draw there are one effect be can be to avoid vertically leading 12 lines and being lifted by crane when, be pulled through somersault coaster 2;Grounded metal coaster 6 to operator or can be twisted 5 and play the role of protection.
From the above technical scheme, the application provides a kind of single-phase transient earthing short-circuit test method of transmission line of electricity and is System, the method first determine the testing position that single-phase transient earthing short-circuit test is carried out in power transmission line;Equipotential live line work is used again Mode hangs ancillary test shorting stub in testing position, so that auxiliary shorting stub is connected with transmission line of electricity split conductor, Jin Erfu Help test shorting stub electrification;The lifting insulating cord of testing equipment is passed through into somersault coaster again, equipotential live line work side is used on tower Somersault coaster is connected in ancillary test shorting stub by formula;The end of lifting insulating cord extends to ground;To in ground location By lifting by crane the vertical wires of insulating cord pulling test equipment, until vertical wires contact ancillary test shorting stub, make vertical wires Electrification;And by the striking line in traction insulating cord pulling test equipment, until striking line makes vertical wires close to vertical wires It discharges striking line.
The application is connected testing equipment by coaster by livewire work mode, by lifting insulating cord and traction insulating cord It connects on the test section of power transmission line to be detected, to form electric discharge in vertical wires and striking line, forms short circuit simulation, the method It can implement short-circuit test under the premise of not having a power failure, avoid influencing test efficiency and route normal operation because having a power failure.
Similar portion cross-reference between embodiment provided by the present application, specific embodiment provided above is only It is several examples under the total design of the application, does not constitute the restriction of the application protection scope.For those skilled in the art For member, any other embodiment expanded without creative efforts according to application scheme all belongs to In the protection scope of the application.

Claims (8)

1. a kind of single-phase transient earthing short-circuit test method of transmission line of electricity characterized by comprising
Determine the testing position that single-phase transient earthing short-circuit test is carried out in power transmission line;
Using equipotential live line work mode, ancillary test shorting stub is hung in the testing position, so that auxiliary shorting stub and defeated The connection of electric line split conductor, and then ancillary test shorting stub is charged;
The lifting insulating cord of testing equipment is passed through into somersault coaster, is connected somersault coaster using earth potential working mode on tower Onto the ancillary test shorting stub;The end of the lifting insulating cord extends to ground;
In ground location by the vertical wires of testing equipment described in the lifting insulation wire saws, until the vertical wires contact Ancillary test shorting stub charges the vertical wires;
In ground location by the striking line in testing equipment described in traction insulation wire saws, until the striking line hangs down close to described Straight wire makes the vertical wires discharge the striking line.
2. the single-phase transient earthing short-circuit test method of transmission line of electricity according to claim 1, which is characterized in that the electricity such as use Position operation mode, before the step of testing position hangs ancillary test shorting stub, the method also includes:
Winding protection is implemented to the power transmission line of the testing position.
3. the single-phase transient earthing short-circuit test method of transmission line of electricity according to claim 2, which is characterized in that the examination The power transmission line for testing position is implemented to be wound the power transmission line test section in the step of winding is protected using aluminium armor tape, make institute It states aluminium armor tape and coats the entire power transmission line test section, the coiling length of the aluminium armor tape is 30-50cm.
4. the single-phase transient earthing short-circuit test method of transmission line of electricity according to claim 1, which is characterized in that set test Standby lifting insulating cord passes through somersault coaster, and somersault coaster is connected to the auxiliary using earth potential working mode on tower and is tried The step tested in shorting stub includes:
The somersault coaster is connected to the testing position using annealed copper wire or with the shorting stub of transmission line of electricity same material On all split conductors, the coaster is made of metal material that can be conductive;
And the sliding by the lifting insulating cord in the somersault coaster, it is sliding that the vertical wires are contacted into the somersault Vehicle, so that the vertical wires connect the split conductor by the somersault coaster.
5. the single-phase transient earthing short-circuit test method of transmission line of electricity according to claim 1, which is characterized in that the striking The end of line is grounded or connection power transmission tower earthing or grounding means, if the earthing or grounding means of the end connection power transmission tower of the striking line, institute State method further include:
The end of the striking line is connected into the power transmission tower earthing or grounding means, the striking line is tested and is connect in the connection power transmission tower Current potential after ground device;
If the current potential of the striking line is zero, the beginning of the striking line is connected into the lifting insulating cord;
If the current potential of the striking line is not zero, grounding is done into the end of the striking line or connects the power transmission tower Ground processing, and the beginning of the striking line is connected into the lifting insulating cord after being zero in the current potential of the striking line.
6. the single-phase transient earthing short-circuit test method of transmission line of electricity according to claim 1, which is characterized in that the lifting Insulating cord connect setting being twisted on the ground with the traction insulating cord, and the method drives the lifting by described be twisted Insulating cord and the traction insulating cord, so that the vertical wires of testing equipment described in the lifting insulation wire saws, and make institute State striking line described in traction insulation wire saws.
7. a kind of single-phase transient earthing short-circuit test system of transmission line of electricity characterized by comprising
Testing equipment, comprising: ancillary test shorting stub, vertical wires and striking line;Wherein, the ancillary test shorting stub is used In the current potential on split conductor is transferred to the vertical wires;The vertical wires are used to discharge to the striking line;
Ancillary test shorting stub after the testing position for carrying out single-phase transient earthing short-circuit test in determining power transmission line, is adopted With equipotential live line work mode, ancillary test shorting stub is hung in the testing position, so that auxiliary shorting stub and transmission line of electricity Split conductor connection, and then ancillary test shorting stub is charged and somersault coaster is facilitated to connect;
Somersault coaster uses earth potential working mode for the lifting insulating cord of testing equipment to be passed through somersault coaster on tower Somersault coaster is connected in the ancillary test shorting stub;The end of the lifting insulating cord extends to ground;
Insulating cord is lifted by crane, for the vertical wires in ground location by testing equipment described in the lifting insulation wire saws, until The vertical wires contact ancillary test shorting stub, charge the vertical wires;
Insulating cord is drawn, the striking line for being insulated described in wire saws in testing equipment in ground location by the traction, until The striking line makes the vertical wires discharge striking line close to the vertical wires;
Protective device, for implementing winding protection to the testing position, the protective device is to be wrapped around in the test Aluminium armor tape on the power transmission line test section of position.
8. the single-phase transient earthing short-circuit test system of transmission line of electricity according to claim 7, which is characterized in that the system Further include being twisted, it is described lifting insulating cord with it is described traction insulating cord connect setting on the ground described in be twisted, for passing through Described be twisted drives the lifting insulating cord and the traction insulating cord, so that testing equipment described in lifting insulation wire saws Vertical wires, and make striking line described in traction insulation wire saws.
CN201811244566.3A 2018-10-24 2018-10-24 A kind of single-phase transient earthing short-circuit test method and system of transmission line of electricity Pending CN109061358A (en)

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