CN110120643B - Uninterrupted power operation method for power line of ground potential distribution network - Google Patents
Uninterrupted power operation method for power line of ground potential distribution network Download PDFInfo
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- CN110120643B CN110120643B CN201910318800.0A CN201910318800A CN110120643B CN 110120643 B CN110120643 B CN 110120643B CN 201910318800 A CN201910318800 A CN 201910318800A CN 110120643 B CN110120643 B CN 110120643B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
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Abstract
The invention provides a method for operating a power line of a ground potential distribution network without power outage, which comprises the steps of numbering staff climbing a pole, realizing the operation with the maximum efficiency without power outage through the cooperative work of the staff No. 1 on the pole, the staff No. 2 on the pole and the staff No. 3 on the pole, installing a switch on the pole, measuring the current of the line, measuring and manufacturing a lead and installing a six-phase lead, arranging an insulating shielding cover on a power supply side and a load side, overlapping a switching load side on a column and a power supply side six-phase lead test tower, overlapping a middle-phase lead on the load side of a load switch and removing insulating shielding measures, overlapping a phase lead on the load side of the load switch and a phase lead on the power supply side of the load switch, and finally breaking an original load side of a tension-resistant pole and a drainage line on the power supply side. The invention realizes the operation of the power line of the ground potential distribution network without power outage, effectively improves the safety and efficiency of the operation without power outage, and ensures the efficient operation of the power line of the ground potential distribution network without power outage.
Description
Technical Field
The invention relates to the technical field of electric power, in particular to a non-power-outage operation method for a ground potential distribution network power line.
Background
Live working is an important means and method for detecting, overhauling, maintaining and transforming power grid equipment, and is an important technical measure for ensuring the reliable and stable operation of a power system. With the continuous improvement of the power supply reliability requirement of the power distribution network, live working and non-power-off working methods of the power distribution line are also widely applied and popularized. The key technical parameters of live working mainly comprise a minimum safety distance, a minimum combined gap, a minimum effective insulation length of an insulation tool and the like. With the rapid development of economy in China and the continuous improvement of the living standard of people, the requirement of users on the reliability of power supply is increasingly improved. In addition, with the rapid advance of the urbanization level, the situations of road reconstruction, line migration, box-type transformers, ring main units, cables and the like are increasing. Therefore, it is urgently needed to develop a method for operating the power line of the ground potential distribution network without power outage to solve the problems in the prior art.
Disclosure of Invention
The invention aims to provide a method for operating a ground potential distribution network power line without power outage, which can realize power outage operation of the ground potential distribution network power line, ensure uninterrupted power supply of a user and realize uninterrupted maintenance.
In order to achieve the purpose, the invention adopts the following technical scheme: a method for operating a ground potential distribution network power line without power outage comprises the following steps:
s1, climbing a rod: numbering the pole climbing personnel, and dividing the pole climbing personnel into No. 1 operating personnel, No. 2 operating personnel and No. 3 operating personnel;
s2, installing a switch on the rod: the ground electrician uses an insulating rope to transmit an insulating distance measuring rod to No. 2 operators on the rod, No. 1 operators on the rod use the insulating distance measuring rod to measure, marks the position of a branch load switch at a position 0.8m away from a cross arm under a main line, installs an insulating cross arm shielding baffle, then installs the branch load switch and a cable on the rod, and removes the insulating cross arm shielding baffle after the installation is finished;
s3, measuring line current: the operator No. 1 on the rod uses an insulating rod ammeter to measure and record the current of the three-phase main lead;
s4, measuring and manufacturing a lead and installing a six-phase lead: the operator No. 1 on the pole measures the length of a lead between a switching power supply side pile head and a load side pile head on each phase of column and each phase of conductor by using an insulating distance measuring pole, and six branch leads are manufactured according to the measured lead length;
s5, arranging insulation shielding covers on the power supply side and the load side: the ground operator sequentially transfers the insulating fork rod operating rod and the insulating shielding cover to No. 2 operators on the rod, and No. 1 operators on the rod use the insulating fork rod operating rod to arrange the insulating shielding cover on the phase conductors on the two sides of the power supply side and the load side for insulating shielding;
s6, lapping a six-phase lead test tower on a switch load side and a power supply side on a column: the operator No. 1 on the pole respectively installs the six-phase lead wires on the power side and the load side pile heads of the corresponding pole-mounted switch under the coordination of the operator No. 2 on the pole, and pulls open the knife switch of the pole-mounted switch to ensure that the knife switch is in a disconnected state; the ground operating personnel transmit the insulating wire clamp operating rod, the insulating lock rod operating rod and the insulating sleeve operating rod to No. 2 operating personnel on the rod in sequence, No. 1 operating personnel on the rod adjust the position, the free ends of the side phase lead wires are locked by the insulating lock rod operating rod, the side phase main lead wire lap joint is tried, whether the lead wires are long enough is checked, after the side phase lead wires are tried, the length of the side phase lead wires is adjusted, then the other three-phase lead wires on the load side of the switch on the column are also tried, and whether the length of the lead wires is long enough is checked; no. 1 operator on the rod uses an insulating fork lever operating rod to take down an insulating shielding cover on a load side conductor;
s7, lapping the middle phase lead wire on the load side of the load switch and removing the insulation shielding measures: the working personnel No. 1 on the pole and the working personnel No. 2 on the pole are matched with each other to lap the middle phase lead, each phase lead is provided with 2 special-shaped wire clamps, the working personnel No. 1 on the pole locks the free end of the middle phase lead on the load side of the switch on the pole by an insulating lock rod, trial lapping is carried out at the lap joint of the middle phase electrified main lead, the working personnel No. 2 on the pole installs the special-shaped wire clamp at the lap joint of the middle phase main lead by an insulating wire clamp operating rod, and the working personnel No. 1 on the pole penetrates the free end of the middle phase lead into the special; the No. 3 operator on the rod uses the insulating sleeve operating rod to screw up each bolt of the special-shaped wire clamp and checks whether the connection is firm and reliable; the No. 1 worker on the rod uses the insulating fork lever to operate the rod to take down the insulating shielding cover on the power supply side wire;
s8, lapping a load side phase lead of the load switch: the operator No. 1 on the rod, the operator No. 2 on the rod and the operator No. 3 on the rod are matched with each other to lap joint the phase lead on the other side of the load switch according to the same operation method; after the three-phase lead is lapped, whether the distance between phases meets the standard or not is checked, a working responsible person uses a telescope to check the screw fastening condition of the special-shaped wire clamp or the puncture wire clamp, and whether the device meets the standard or not is judged;
s9, lapping a side phase lead of the load switch power supply: no. 1 operator on the pole locks the free end of the phase lead wire on the side of the load switch power supply by an insulating lock rod, No. 2 operator on the pole uses an insulating wire clamp operating rod to install the special-shaped wire clamp at the lap joint of the main lead wire on the side phase, No. 1 operator on the pole uses an insulating lock rod to penetrate the free end of the phase lead wire into the special-shaped wire clamp, No. 3 operator on the pole uses an insulating sleeve operating rod to screw up each bolt of the special-shaped wire clamp and check whether the connection is firm and reliable, and the other side phase lead wire on the side of the load switch power supply is lapped in the same way;
s10, breaking the original load side of the tension rod and the power supply side drainage wire: the No. 1 operator on the pole, the No. 2 operator on the pole and the No. 3 operator on the pole are matched with each other to cut off the original load side and the power side phase drainage wires of the tension-resistant pole of the line; the device on the pole is examined safely and reliably comprehensively to the operating personnel to No. 1 operating personnel on the pole and No. 2 operating personnel on the pole and No. 3 operating personnel on the pole get off the pole in proper order after determining that there is no relic on the pole.
In this embodiment, in S2, the specific steps of mounting the insulating cross arm shielding plate are as follows: ground operation personnel transmit two insulating horizontal shielding baffles for No. 2 operation personnel on the pole in proper order, and No. 1 operation personnel on the pole fix the hook on the staple bolt of cross arm under the main traverse line, then lay two shielding baffles and pin in the biplate splint to it is firm to bind with the pole.
In this embodiment, in S2, the specific steps for installing the branch load switch and the cable on the rod are as follows: I. the ground operator uses an insulating rope to transmit the steel wire sleeve to No. 2 operator, the No. 1 operator on the rod sleeves the steel wire sleeve on the cement rod and then moves to the lower part of the lower cross arm, and the fixed pulley end of the insulating three-wheel sliding car group transmitted by the No. 2 operator is hung in the steel wire sleeve; II. The ground operator hangs the movable pulley end of the insulated three-wheel pulley block into a load switch lifting rope, the pulley block rope turns to the pulley through a rod root to tighten the pulley, the load switch is twisted to float, the ground operator continues to tighten the pulley block rope after installing a zinc oxide arrester and a load switch rod upper fixing frame on the load switch, the load switch is lifted to a cement rod 1.5-2.5m below a main line cross arm to be fixed, a switch and a disconnecting link of the load switch are pulled open, and the insulated three-wheel pulley block and a steel wire sleeve are removed after the load switch is fixed; no. 1 operation personnel uses the steel wire cover to fix the jigger on the near cement pole of load switch installation department on the pole, 2 meters below the firm cable end of going through the coaster with insulating work rope one end, ground operation personnel tighten up the other end of insulating work rope, make the cable end promote to the load switch upside, No. 1 operation personnel and No. 2 operation personnel cooperation on the pole fix the cable end at load switch load end on the pole, then fixed cable staple bolt on the installation pole, the downlead of cable sheathing pipe and zinc oxide arrester is connected, demolish steel wire cover and coaster after that.
In the present embodiment, in S5, the effective insulation length of the insulating yoke lever is greater than 0.7 m.
In the present embodiment, in S5, the overlapping portion of the lead wire and the insulating shield case is larger than 15 cm.
In this embodiment, in S6, when the six-phase lead is attached, the other end of the six-phase lead faces the load-side pile head direction, and the air distance between the lead and the electrified conductor is less than 0.4 m.
In the present embodiment, the distance between the lead and the pole is greater than 30cm in S7.
In this embodiment, in S10, the step of cutting the original load side and power side phase drain wires of the strain-resistant line pole by the cooperation of No. 1 operator on the pole, No. 2 operator on the pole and No. 3 operator on the pole specifically includes the following steps: a. the ground operator uses the insulated working rope to sequentially transfer the insulated lock rod and the insulated scissors to No. 2 operators on the rod; b. no. 2 operators on the rod wear insulating gloves and protective gloves to lock the proper position of the phase lead wire side of the load side by using an insulating lock rod; c. no. 1 operator on the rod uses an insulated wire cutting scissors to cut off the wire side of the lead; d. the operator No. 2 on the rod uses an insulating lock rod to put down the cut lead to a proper position and keeps a sufficient safe distance with the electric conductors such as the cross arm and the like; e. the operator No. 1 on the rod is rotated to a proper position on the power supply side, the operator No. 3 on the rod uses an insulating lock rod to lock a proper position on the phase lead wire side on the power supply side after wearing insulating gloves and protective gloves, and the operator No. 1 on the rod uses insulating wire-breaking scissors to cut off the lead wire side of the lead wire; f. no. 1 operating personnel on the pole respectively cut off the drainage threads on the cross arm side; no. 2 operating personnel use insulating work rope to transmit the drainage wire of cutting to ground on the pole.
After the technical scheme is adopted, the invention numbers the staff who climbs the pole, and the staff is divided into the staff No. 1 on the pole, the staff No. 2 on the pole and the staff No. 3 on the pole, the uninterrupted power operation with the maximum efficiency is realized through the cooperative work of the staff No. 1 on the pole, the staff No. 2 on the pole and the staff No. 3 on the pole, then the on-pole switch operation is installed, the three-phase main conductor current is measured and recorded by the staff No. 1 on the pole by using an insulating pole ammeter, the staff No. 1 on the pole measures the length of the lead between the power side pile head and the load side pile head of the switch on each phase of the pole and each phase of the lead, and six branch leads are manufactured according to the measured lead length, then the insulating shielding covers are arranged on the power side and the load side, then the test towers of the six phase leads on the switch load side and the power side are lapped, then the middle leads on the load side of the load switch are lapped and the insulating shielding, then lap-jointing the load side phase lead wire of the load switch and the power side phase lead wire of the load switch, and finally breaking the original load side and the power side drainage wire of the tension rod. Through the high-efficient cooperation operation of No. 1 staff on the pole, No. 2 staff on the pole and No. 3 staff on the pole, realized that the ground potential joins in marriage net power line operation that does not have a power failure, effectively improve the security and the efficiency of the operation that does not have a power failure, guarantee that the ground potential joins in marriage net power line efficient operation that does not have a power failure.
Drawings
The invention will be further described with reference to the accompanying drawings in which:
fig. 1 is a schematic flow chart of a method for operating a ground potential distribution network power line without power outage, which is provided by the invention.
Detailed Description
The invention is further described with reference to the following figures and specific examples. It is to be understood that the following terms "upper," "lower," "left," "right," "longitudinal," "lateral," "inner," "outer," "vertical," "horizontal," "top," "bottom," and the like are used merely to indicate an orientation or positional relationship relative to one another as illustrated in the drawings, merely to facilitate describing and simplifying the invention, and are not intended to indicate or imply that the device/component so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore are not to be considered limiting of the invention.
As shown in fig. 1, the invention provides a method for operating a ground potential distribution network power line without power outage, which comprises the following steps:
s1, climbing a rod: numbering the pole climbing personnel, and dividing the pole climbing personnel into No. 1 operating personnel, No. 2 operating personnel and No. 3 operating personnel;
s2, installing a switch on the rod: the ground electrician uses an insulating rope to transmit an insulating distance measuring rod to No. 2 operators on the rod, No. 1 operators on the rod use the insulating distance measuring rod to measure, marks the position of a branch load switch at a position 0.8m away from a cross arm under a main line, installs an insulating cross arm shielding baffle, then installs the branch load switch and a cable on the rod, and removes the insulating cross arm shielding baffle after the installation is finished;
s3, measuring line current: the operator No. 1 on the rod uses an insulating rod ammeter to measure and record the current of the three-phase main lead;
s4, measuring and manufacturing a lead and installing a six-phase lead: the operator No. 1 on the pole measures the length of a lead between a switching power supply side pile head and a load side pile head on each phase of column and each phase of conductor by using an insulating distance measuring pole, and six branch leads are manufactured according to the measured lead length;
s5, arranging insulation shielding covers on the power supply side and the load side: the ground operator sequentially transfers the insulating fork rod operating rod and the insulating shielding cover to No. 2 operators on the rod, and No. 1 operators on the rod use the insulating fork rod operating rod to arrange the insulating shielding cover on the phase conductors on the two sides of the power supply side and the load side for insulating shielding;
s6, lapping a six-phase lead test tower on a switch load side and a power supply side on a column: the operator No. 1 on the pole respectively installs the six-phase lead wires on the power side and the load side pile heads of the corresponding pole-mounted switch under the coordination of the operator No. 2 on the pole, and pulls open the knife switch of the pole-mounted switch to ensure that the knife switch is in a disconnected state; the ground operating personnel transmit the insulating wire clamp operating rod, the insulating lock rod operating rod and the insulating sleeve operating rod to No. 2 operating personnel on the rod in sequence, No. 1 operating personnel on the rod adjust the position, the free ends of the side phase lead wires are locked by the insulating lock rod operating rod, the side phase main lead wire lap joint is tried, whether the lead wires are long enough is checked, after the side phase lead wires are tried, the length of the side phase lead wires is adjusted, then the other three-phase lead wires on the load side of the switch on the column are also tried, and whether the length of the lead wires is long enough is checked; no. 1 operator on the rod uses an insulating fork lever operating rod to take down an insulating shielding cover on a load side conductor;
s7, lapping the middle phase lead wire on the load side of the load switch and removing the insulation shielding measures: the working personnel No. 1 on the pole and the working personnel No. 2 on the pole are matched with each other to lap the middle phase lead, each phase lead is provided with 2 special-shaped wire clamps, the working personnel No. 1 on the pole locks the free end of the middle phase lead on the load side of the switch on the pole by an insulating lock rod, trial lapping is carried out at the lap joint of the middle phase electrified main lead, the working personnel No. 2 on the pole installs the special-shaped wire clamp at the lap joint of the middle phase main lead by an insulating wire clamp operating rod, and the working personnel No. 1 on the pole penetrates the free end of the middle phase lead into the special; the No. 3 operator on the rod uses the insulating sleeve operating rod to screw up each bolt of the special-shaped wire clamp and checks whether the connection is firm and reliable; the No. 1 worker on the rod uses the insulating fork lever to operate the rod to take down the insulating shielding cover on the power supply side wire;
s8, lapping a load side phase lead of the load switch: the operator No. 1 on the rod, the operator No. 2 on the rod and the operator No. 3 on the rod are matched with each other to lap joint the phase lead on the other side of the load switch according to the same operation method; after the three-phase lead is lapped, whether the distance between phases meets the standard or not is checked, a working responsible person uses a telescope to check the screw fastening condition of the special-shaped wire clamp or the puncture wire clamp, and whether the device meets the standard or not is judged;
s9, lapping a side phase lead of the load switch power supply: no. 1 operator on the pole locks the free end of the phase lead wire on the side of the load switch power supply by an insulating lock rod, No. 2 operator on the pole uses an insulating wire clamp operating rod to install the special-shaped wire clamp at the lap joint of the main lead wire on the side phase, No. 1 operator on the pole uses an insulating lock rod to penetrate the free end of the phase lead wire into the special-shaped wire clamp, No. 3 operator on the pole uses an insulating sleeve operating rod to screw up each bolt of the special-shaped wire clamp and check whether the connection is firm and reliable, and the other side phase lead wire on the side of the load switch power supply is lapped in the same way;
s10, breaking the original load side of the tension rod and the power supply side drainage wire: the No. 1 operator on the pole, the No. 2 operator on the pole and the No. 3 operator on the pole are matched with each other to cut off the original load side and the power side phase drainage wires of the tension-resistant pole of the line; the device on the pole is examined safely and reliably comprehensively to the operating personnel to No. 1 operating personnel on the pole and No. 2 operating personnel on the pole and No. 3 operating personnel on the pole get off the pole in proper order after determining that there is no relic on the pole.
In this embodiment, in S2, the specific steps of mounting the insulating cross arm shielding plate are as follows: ground operation personnel transmit two insulating horizontal shielding baffles for No. 2 operation personnel on the pole in proper order, and No. 1 operation personnel on the pole fix the hook on the staple bolt of cross arm under the main traverse line, then lay two shielding baffles and pin in the biplate splint to it is firm to bind with the pole.
In this embodiment, in S2, the specific steps for installing the branch load switch and the cable on the rod are as follows: I. the ground operator uses an insulating rope to transmit the steel wire sleeve to No. 2 operator, the No. 1 operator on the rod sleeves the steel wire sleeve on the cement rod and then moves to the lower part of the lower cross arm, and the fixed pulley end of the insulating three-wheel sliding car group transmitted by the No. 2 operator is hung in the steel wire sleeve; II. The ground operator hangs the movable pulley end of the insulated three-wheel pulley block into a load switch lifting rope, the pulley block rope turns to the pulley through a rod root to tighten the pulley, the load switch is twisted to float, the ground operator continues to tighten the pulley block rope after installing a zinc oxide arrester and a load switch rod upper fixing frame on the load switch, the load switch is lifted to a cement rod 1.5-2.5m below a main line cross arm to be fixed, a switch and a disconnecting link of the load switch are pulled open, and the insulated three-wheel pulley block and a steel wire sleeve are removed after the load switch is fixed; no. 1 operation personnel uses the steel wire cover to fix the jigger on the near cement pole of load switch installation department on the pole, 2 meters below the firm cable end of going through the coaster with insulating work rope one end, ground operation personnel tighten up the other end of insulating work rope, make the cable end promote to the load switch upside, No. 1 operation personnel and No. 2 operation personnel cooperation on the pole fix the cable end at load switch load end on the pole, then fixed cable staple bolt on the installation pole, the downlead of cable sheathing pipe and zinc oxide arrester is connected, demolish steel wire cover and coaster after that.
In the present embodiment, in S5, the effective insulation length of the insulating yoke lever is greater than 0.7 m. The safety of insulating fork lever action bars can be effectively improved, and the safety of live working operation is improved.
In this embodiment, in S5, the overlapping portion between the lead and the insulation shielding cover is larger than 15cm, which can effectively improve the insulation shielding effect and improve the insulation performance.
In this embodiment, in S6, when the six-phase lead is mounted, the other end of the six-phase lead faces the load-side pile head direction, and the air distance between the lead and the live conductor is less than 0.4m, which can effectively improve the safety of the live operation.
In this embodiment, in S7, the distance between the lead and the electric pole is greater than 30cm, which can effectively improve the safety of the live-wire operation.
In this embodiment, in S10, the step of cutting the original load side and power side phase drain wires of the strain-resistant line pole by the cooperation of No. 1 operator on the pole, No. 2 operator on the pole and No. 3 operator on the pole specifically includes the following steps: a. the ground operator uses the insulated working rope to sequentially transfer the insulated lock rod and the insulated scissors to No. 2 operators on the rod; b. no. 2 operators on the rod wear insulating gloves and protective gloves to lock the proper position of the phase lead wire side of the load side by using an insulating lock rod; c. no. 1 operator on the rod uses an insulated wire cutting scissors to cut off the wire side of the lead; d. the operator No. 2 on the rod uses an insulating lock rod to put down the cut lead to a proper position and keeps a sufficient safe distance with the electric conductors such as the cross arm and the like; e. the operator No. 1 on the rod is rotated to a proper position on the power supply side, the operator No. 3 on the rod uses an insulating lock rod to lock a proper position on the phase lead wire side on the power supply side after wearing insulating gloves and protective gloves, and the operator No. 1 on the rod uses insulating wire-breaking scissors to cut off the lead wire side of the lead wire; f. no. 1 operating personnel on the pole respectively cut off the drainage threads on the cross arm side; no. 2 operating personnel use insulating work rope to transmit the drainage wire of cutting to ground on the pole.
It can be understood that, the electrician who climbs the pole operates the back bottom surface uses insulating rope to transmit insulating range finding pole for No. 2 staff on the pole, No. 1 staff on the pole wears insulating gloves and uses insulating range finding pole to measure, the position of cross arm load switch is installed 0.8m away from the thread down, the mark is done, the electrician on the ground installs insulating shield baffle handle, prick insulating lifting rope on rings after the adjustment jib, the ground operation personnel uses insulating rope to transmit two insulating horizontal shield baffles for No. 2 staff on the pole in proper order, No. 1 staff wears insulating gloves on the pole, hold shield baffle handle jib and will prick the hook and fix on leading the anchor ear bolt of cross arm under the line, then lay two shield baffles into biplate splint and pin, and it is firm to bind with the pole.
It can be understood that after the insulating shielding measures are set, a branch line load switch and a cable on a rod are installed next to the insulating shielding measures, ground operators use an insulating rope to transmit a steel wire sleeve to No. 2 operators, No. 1 operators on the rod move the steel wire sleeve to the lower part of a lower cross arm after sleeving the steel wire sleeve on a cement rod, and the fixed pulley end of the insulating three-wheel sliding car group transmitted by the No. 2 operators is hung in the steel wire sleeve. Ground operating personnel hang the movable pulley end of the insulated three-wheel pulley group into the load switch lifting rope, the pulley group rope is tightened through the rod root steering pulley, and the load switch is twisted and floated. After a zinc oxide arrester and a fixed frame on a load switch rod are installed on the load switch by ground operators. And continuously tightening a pulley block rope, lifting the load switch to a cement rod which is 2m below the main line cross arm and is fixed, and pulling open the switch and the disconnecting link of the load switch. And (4) removing the insulated three-wheel pulley block and the steel wire sleeve after the load switch is fixed. No. 1 operating personnel on the pole use the steel wire cover to fix the jigger on the cement pole near load switch installation department, with insulating work rope one end through 2 meters below the coaster tie cable end of a thread, ground operating personnel tighten up the other end of insulating work rope, make cable end of a thread promote the load switch upside, No. 1, No. 2 operating personnel cooperation on the pole are fixed the cable end at load switch load end. Then fixing a cable hoop, a cable sheath tube and a down lead of the zinc oxide arrester on the mounting rod to connect and remove the steel wire sleeve and the pulley. No. 1 operation personnel wear insulating gloves to take off insulating horizontal flat shield baffle on the pole, and No. 2 operation personnel use insulating rope to shield the baffle with insulating and transmit to ground.
It can be understood that when the cable head is installed and connected on the load switch, the cross arm shielding baffle is used for shielding the lower part of the main line lower cross arm, and the safety distance of operators on the pole is ensured.
After the operation of overlapping the power supply side and the load side of the circuit load switch is finished, the installation and the quality of the switch on the circuit pole are checked, the determining device meets the operation standard, and after the wiring phase of the switch on the circuit pole is the same as the phase of the lead, the switch on the circuit pole is closed by using the insulating rod, so that the switch on the circuit pole is put into operation. After checking and confirming that the switch on the line pole operates normally, the operator No. 1 on the pole wears an insulating glove, uses an insulating pole type ammeter to measure the three-phase lead current of the load side of the switch on the pole, confirms that the current passes through the load side of the load switch, and makes a record.
Other embodiments of the present invention than the preferred embodiments described above will be apparent to those skilled in the art from the present invention, and various changes and modifications can be made therein without departing from the spirit of the present invention as defined in the appended claims.
Claims (8)
1. A method for operating a ground potential distribution network power line without power outage is characterized by comprising the following steps:
s1, climbing a rod: numbering the pole climbing personnel, and dividing the pole climbing personnel into No. 1 operating personnel, No. 2 operating personnel and No. 3 operating personnel;
s2, installing a switch on the rod: the ground electrician uses an insulating rope to transmit an insulating distance measuring rod to No. 2 operators on the rod, No. 1 operators on the rod use the insulating distance measuring rod to measure, marks the position of a branch load switch at a position 0.8m away from a cross arm under a main line, installs an insulating cross arm shielding baffle, then installs the branch load switch and a cable on the rod, and removes the insulating cross arm shielding baffle after the installation is finished;
s3, measuring line current: the operator No. 1 on the rod uses an insulating rod ammeter to measure and record the current of the three-phase wire;
s4, measuring and manufacturing a lead and installing a six-phase lead: the operator No. 1 on the pole measures the length of a lead between a power supply side pile head and a load side pile head of each phase of load switch and each phase of conductor by using an insulating distance measuring pole, and six branch leads are manufactured according to the measured lead length;
s5, arranging insulation shielding covers on the power supply side and the load side: the ground operator sequentially transfers the insulating fork rod operating rod and the insulating shielding cover to No. 2 operators on the rod, and No. 1 operators on the rod use the insulating fork rod operating rod to arrange the insulating shielding cover on the phase conductors on the two sides of the power supply side and the load side for insulating shielding;
s6, lapping the six-phase lead test tower on the load side and the power supply side of the load switch: the operator No. 1 on the pole respectively installs the six-phase lead wires on the power side and the load side pile heads of the corresponding load switches under the coordination of the operator No. 2 on the pole, and pulls open the disconnecting link of the load switches to enable the disconnecting link to be in a disconnected state; the ground operator sequentially transfers an insulating wire clamp operating rod, an insulating lock rod operating rod and an insulating sleeve operating rod to No. 2 operators on the rod, the No. 1 operator on the rod adjusts the position, the free ends of the side phase leads are locked by the insulating lock rod operating rod, trial lapping is carried out at the lap joint of the side phase leads to check whether the leads are long enough, the lengths of the side phase leads are adjusted after the side phase leads are trial lapped, then trial lapping is carried out on the other three-phase leads on the load side of the load switch, and the lengths of the leads are checked whether the leads are long enough; no. 1 operator on the rod uses an insulating fork lever operating rod to take down an insulating shielding cover on a load side conductor;
s7, lapping the middle phase lead wire on the load side of the load switch and removing the insulation shielding measures: the working personnel No. 1 on the pole and the working personnel No. 2 on the pole are matched with each other to lap the middle phase lead, each phase lead is provided with 2 special-shaped wire clamps, the working personnel No. 1 on the pole uses an insulating lock rod operating rod to lock the free end of the middle phase lead on the load side of the load switch, trial lapping is carried out at the lap joint of the middle phase live lead, the working personnel No. 2 on the pole uses the insulating wire clamp operating rod to install the special-shaped wire clamps at the lap joint of the middle phase lead, and the working personnel No. 1 on the pole uses the insulating lock rod operating rod to penetrate the free end of; the No. 3 operator on the rod uses the insulating sleeve operating rod to screw up each bolt of the special-shaped wire clamp and checks whether the connection is firm and reliable; the No. 1 worker on the rod uses the insulating fork lever to operate the rod to take down the insulating shielding cover on the power supply side wire;
s8, lapping a load side phase lead of the load switch: the operator No. 1 on the rod, the operator No. 2 on the rod and the operator No. 3 on the rod are matched with each other to lap joint the phase lead on the other side of the load switch according to the same operation method; after the three-phase lead is lapped, whether the distance between phases meets the standard or not is checked, a working person in charge checks the screw fastening condition of the special-shaped wire clamp through a telescope, and whether the device meets the standard or not is judged;
s9, lapping a side phase lead of the load switch power supply: the method comprises the following steps that 1, an operator on a rod locks the free end of a phase lead at the side of a load switch power supply by using an insulating lock rod operating rod, 2, the operator on the rod uses an insulating wire clamp operating rod to install a special-shaped wire clamp at the lap joint of side phase leads, 1, the operator on the rod uses the insulating lock rod operating rod to penetrate the free end of the side phase lead into the special-shaped wire clamp, 3, the operator on the rod uses an insulating sleeve operating rod to screw bolts of the special-shaped wire clamp tightly and check whether connection is firm and reliable, and the other side of the load switch power supply is lapped in the same mode;
s10, breaking the original load side of the tension rod and the power supply side drainage wire: the No. 1 operator on the pole, the No. 2 operator on the pole and the No. 3 operator on the pole are matched with each other to cut off the original load side and the power side phase drainage wires of the tension-resistant pole of the line; the device on the pole is examined safely and reliably comprehensively to the operating personnel to No. 1 operating personnel on the pole and No. 2 operating personnel on the pole and No. 3 operating personnel on the pole get off the pole in proper order after determining that there is no relic on the pole.
2. The uninterrupted power operation method for the power line of the ground potential distribution network according to claim 1, wherein in the step S2, the specific installation steps of the shielding baffle of the insulating cross arm are as follows: ground operating personnel shield the baffle with two insulating cross arms and transmit for No. 2 operating personnel on the pole in proper order, and No. 1 operating personnel will prick the hook and fix under the wire on the staple bolt of cross arm, then lay into biplate splint with two shield the baffle and pin to it is firm to bind with the pole.
3. The uninterrupted operation method for the power line of the ground potential distribution network according to claim 1, wherein in the step S2, the specific steps for installing the branch load switch and the cable on the rod are as follows: I. the ground operator uses an insulating rope to transmit the steel wire sleeve to No. 2 operator, the No. 1 operator on the rod sleeves the steel wire sleeve on the cement rod and then moves to the lower part of the lower cross arm, and the fixed pulley end of the insulating three-wheel sliding car group transmitted by the No. 2 operator is hung in the steel wire sleeve; II. The ground operator hangs the movable pulley end of the insulated three-wheel pulley block into a load switch lifting rope, the pulley block rope turns to the pulley through a rod root to tighten the pulley, the load switch is twisted to float, the ground operator continues to tighten the pulley block rope after installing a zinc oxide arrester and a load switch rod upper fixing frame on the load switch, the load switch is lifted to a cement rod 1.5-2.5m below a main line cross arm to be fixed, a switch and a disconnecting link of the load switch are pulled open, and the insulated three-wheel pulley block and a steel wire sleeve are removed after the load switch is fixed; no. 1 operation personnel uses the steel wire cover to fix the coaster on the near cement pole of load switch installation department on the pole, 2 meters below the firm cable end of going through the coaster with insulating work rope one end, ground operation personnel tighten up the other end of insulating work rope, make the cable end promote to the load switch upside, No. 1 operation personnel cooperates with No. 2 operation personnel on the pole and fixes the cable end at load switch load end on the pole, then fixed cable staple bolt on the installation pole, the downlead of cable sheathing pipe and zinc oxide arrester is connected, demolish steel wire cover and coaster after that.
4. The uninterrupted operation method for the power line of the ground potential distribution network according to claim 1, wherein in the step S5, the effective insulation length of the insulating fork rod operating rod is greater than 0.7 m.
5. The method of claim 1, wherein in step S5, the overlap between the conductor and the insulating shield is greater than 15 cm.
6. The uninterrupted operation method for the power line of the ground potential distribution network according to claim 1, wherein in the step S6, when the six-phase lead is installed, the other end of the six-phase lead faces the direction of the pile head on the load side, and the air distance between the lead and the live conductor is less than 0.4 m.
7. The uninterrupted operation method for the power line of the ground potential distribution network according to claim 1, wherein in the step S7, the distance between the lead and the electric pole is more than 30 cm.
8. The uninterrupted power operation method of the power line of the ground potential distribution network according to claim 1, wherein in the step S10, the step S of cutting off the phase diversion line at the original load side and the power side of the tension-resistant rod of the line by the cooperation of the operator No. 1 on the rod, the operator No. 2 on the rod and the operator No. 3 on the rod comprises the following steps: a. the ground operator uses the insulated working rope to sequentially transfer the insulated lock rod operating rod and the insulated wire-breaking scissors to No. 2 operators on the rod; b. no. 2 operators on the rod wear insulating gloves and protective gloves to lock the proper position of the phase lead wire side of the load side by using an insulating lock rod operating rod; c. no. 1 operator on the rod uses an insulated wire cutting scissors to cut off the wire side of the lead; d. the operator No. 2 on the rod uses an insulating lock rod to operate the rod to put down the cut lead to a proper position and keep a sufficient safety distance with the cross arm conductor; e. the operator No. 1 on the rod is rotated to a proper position on the power supply side, the operator No. 3 on the rod uses an insulating lock rod operating rod to lock a proper position on the phase lead wire side on the power supply side after wearing insulating gloves and protective gloves, and the operator No. 1 on the rod uses insulating wire-breaking scissors to cut off the lead wire side of the lead wire; f. no. 1 operating personnel on the pole respectively cut off the drainage threads on the cross arm side; no. 2 operating personnel use insulating work rope to transmit the drainage wire of cutting to ground on the pole.
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| CN111697482B (en) * | 2020-05-07 | 2021-11-23 | 国网浙江省电力有限公司金华供电公司 | 10KV overhead line non-outage moving and modifying method |
| CN111817202B (en) * | 2020-06-30 | 2021-12-14 | 国网上海市电力公司 | Arc extinction device and method for live lapping of no-load cable terminal lead of distribution line |
| CN112072555A (en) * | 2020-09-11 | 2020-12-11 | 云南电网有限责任公司带电作业分公司 | Working method for live installation of 35kV overhead line lightning arrester |
| CN112909822B (en) * | 2021-03-10 | 2022-08-30 | 国网河南省电力公司社旗县供电公司 | Unmanned aerial vehicle-assisted uninterrupted power supply operation system and method for power distribution network |
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| CN106451220A (en) * | 2016-12-01 | 2017-02-22 | 华北电力科学研究院有限责任公司 | Bypass equipment and method for live replacement of equipment on same-tower multi-loop pole tower |
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| CN106356758A (en) * | 2016-09-07 | 2017-01-25 | 国网浙江淳安县供电公司 | Operating method for replacing pole-mounted switch live on indirect bypass of 10 KV line insulating pole |
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