CN116260073A - Operation method for live replacement of 35kV linear insulator string - Google Patents
Operation method for live replacement of 35kV linear insulator string Download PDFInfo
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- CN116260073A CN116260073A CN202310544663.9A CN202310544663A CN116260073A CN 116260073 A CN116260073 A CN 116260073A CN 202310544663 A CN202310544663 A CN 202310544663A CN 116260073 A CN116260073 A CN 116260073A
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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
Abstract
The invention provides an operation method for replacing a 35kV linear insulator string in an electrified manner, and belongs to the technical field of 35kV linear insulator replacement in an electrified manner; the technical problems to be solved are as follows: an improvement of an operation method for replacing a 35kV linear insulator string in an electrified manner is provided; the technical scheme adopted for solving the technical problems is as follows: preparing before operation, then boarding an operation tower, hanging an insulating transmission rope, and detecting equipment to be replaced: arranging an electrician A to wear personal protection tools, carrying an insulating pulley transmission rope and an electroscope to ascend to the lower part of a cross arm of an operation point and the horizontal position of an insulator string to be replaced, wherein the electrician A uses the electroscope to test electricity of a wire, the insulator and the cross arm respectively, confirms that no electric leakage phenomenon exists, and hangs the insulating pulley transmission rope; arranging electrician B to climb a pole tower to be matched with the electrician A under the personal protection tool; the invention is applied to live replacement operation of the 35kV linear insulator string.
Description
Technical Field
The invention provides an operation method for replacing a 35kV linear insulator string in an electrified manner, and belongs to the technical field of 35kV linear insulator replacement in an electrified manner.
Background
In the current stage, aiming at the maintenance and replacement operation of the linear insulator of the 35kV power grid line, a power failure operation mode is mainly adopted, namely, the whole 35kV power grid line is powered off firstly, then an operator climbs the tower to test electricity of the line, after a grounding wire is hung, the operator manually replaces the linear insulator to be replaced by bare hands, the grounding wire is removed after the replacement is completed, the tower is evacuated, and the 35kV line is powered back after the line is confirmed to have a power transmission requirement; in addition, the linear insulator can be replaced in a live working mode, an insulating arm vehicle is required to bring an operator to a working area, and then the insulator is replaced.
Compared with a live working mode, if the whole network section power failure is carried out on the insulator replacement line, the requirement of 'energy band continuous' of distribution network maintenance operation at the current stage of a power grid company is not met, the power failure maintenance response speed is slower, the early-stage preparation work is more, the user experience is poor, and the quality of power supply service is reduced; on the other hand, when the insulator is replaced by adopting the uninterruptible power operation mode at present, the condition of a 35kV line facing the insulator to be replaced is complex, the insulator is located in mountainous and hilly terrains, and in most cases, the bucket arm vehicle cannot be used, so that the operation cannot be carried out.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and solves the technical problems that: an improvement of an operation method for replacing a 35kV linear insulator string in an electrified manner is provided.
In order to solve the technical problems, the invention adopts the following technical scheme: an operation method for live replacement of a 35kV linear insulator string comprises the following operation steps:
step one: preparation before performing the operation: the method comprises reconnaissance of the field operation environment, checking of the operation towers, checking that equipment to be replaced and adjacent towers meet operation requirements, preparing operation tools and equipment fences at operation points, performing appearance inspection test, preparing new insulator strings, and performing appearance inspection test;
step two: the insulating transmission rope is hung on the pole tower for boarding operation, and equipment to be replaced is detected:
step 2.1: arranging an electrician A to wear personal protection tools, carrying an insulating pulley transmission rope and an electroscope to ascend to the lower part of a cross arm of an operation point and the horizontal position of an insulator string to be replaced, wherein the electrician A uses the electroscope to test electricity of a wire, the insulator and the cross arm respectively, confirms that no electric leakage phenomenon exists, and hangs the insulating pulley transmission rope;
arranging an electrician B to climb a pole tower to the lower part of the electrician A to work together after wearing personal protection tools;
arranging electricians D1 and D2 to transmit tools and tools on the ground to the pole tower to cooperate with electricians on the pole tower to work;
step 2.2: transmitting an insulator detector to a tower position by ground electricians D1 and D2, wherein electrician A detects insulator strings to be replaced piece by using the insulator detector, and ensuring that the number of good insulator pieces is not less than 2;
step three: setting an insulating measure in an operation area;
step four: according to the wire backup protection measures and the wire collection tools:
step 4.1: electricians D1 and D2 transfer the wire backup protection rope and the pulley block to an operation area through the transfer rope, the electricians A and B mutually cooperate to assemble the pulley block on the replaced insulator string wire, the wire backup protection rope is firstly installed, then the insulating pulley block is installed, and the installation of a bearing tool is completed;
step 4.2: after the installation is finished, an electrician B checks whether the wire backup protection rope is hung well or not, and whether the pulley block is stressed normally or not;
step five: dismantling and replacing the linear insulator string;
step six: executing ending work:
step 6.1: removing the pulley block and the wire backup protection rope by the cooperation of electrician A and electrician B, and transmitting the pulley block and the wire backup protection rope to the ground through the transmission rope;
step 6.2: removing the corresponding insulation measures;
step 6.3: conveying the insulating tool back to the ground by electrician a;
step 6.4: removing the insulation pulley and the insulation transfer rope from the operation cross arm by an electrician A;
step 6.5: and checking and accepting the replacement operation by an inspector, checking the construction quality and reporting the construction quality.
The insulation measures set in the third step are specifically transmission and insulation shielding and isolation measures, and the setting method is as follows:
electrician D1, D2 transmit insulating shielding and isolating tool, use insulating operation rod type instrument to set up insulating shielding isolation measure in electrified wire department by electrician A and electrician B cooperation, according to near to far, from bottom to top, the electrified body is first electrified and then the setting sequence of grounding body, to the operation in-process can not satisfy the electrified body of safe distance to carry out insulating shielding, set up shielding position and be suspension clamp, wire in proper order, shielding position setting sequence is from the nearest beginning of operation electrician.
The insulation measures set in the third step are specifically that an insulation pull rod and an insulation support rod are transmitted and set, and the setting method is as follows:
additionally arranging electrician D3 to transmit tools and tools on the ground to the pole tower to work in cooperation with electrician on the pole tower;
arranging electrician C to wear personal protection tools to climb a pole tower to the lower part of electrician B;
electrician D1, D2 transmit the insulating tie rod and its anchor, install the insulating tie rod on the pole by electrician B;
electrician D1, D2 transmit insulating support rod and its fixer, install insulating support rod fixed on pole by electrician C.
The specific steps of dismantling and replacing the linear insulator string in the fifth step are as follows:
step 5.1: taking out the M pin on the side of the insulator wire by an electrician B through a pin pulling clamp;
step 5.2: the pulley block is continuously tightened by the cooperation of an electrician D2, and the electrician B operates the insulating operation rod to separate the bowl head hanging plate from the insulator string;
step 5.3: loosening the pulley block by an electrician D2 to separate the lead from the insulator and then lowering the lead;
step 5.4: the electrician A and the electrician B are matched with each other, a stay bar hoop is arranged, an insulating operating rod is operated to prop the wires away from the electric pole, and the insulating operating rod is fixed at the hoop;
step 5.5: the insulator is separated from the cross arm by an electrician A, and the old insulator string is transferred to the ground through an insulating bottle hook and a transfer rope;
step 5.6: transmitting a new insulator string to be replaced to an operation area through a transmission rope by electrician D1 and electrician D2;
step 5.7: an electrician A connects the insulator with the cross arm, and an M pin is arranged;
step 5.8: removing the insulating stay bar and the stay bar hoop by the cooperation of electrician A and electrician B;
step 5.9: an electrician D1 is matched with the tightening insulating pulley block, an electrician B is connected with the bowl head hanging plate, and an M pin is arranged;
step 5.10: after the new insulator is installed, checking the stress condition of the new insulator by an electrician B.
The specific steps of dismantling and replacing the linear insulator string in the fifth step are as follows:
step 5.11: taking out the M pin on the side of the insulator wire by an electrician B through a pin pulling clamp;
step 5.12: the pulley block is continuously tightened by the cooperation of an electrician D2, and the electrician B operates the insulating operation rod to separate the bowl head hanging plate from the insulator string;
step 5.13: after the electrician D2 releases the pulley block, the electrician B and the electrician C cooperate with each other to use the insulating support and the pull rod to move the lead in the direction far away from the electric pole;
step 5.14: the insulator is separated from the cross arm by an electrician A, and the old insulator string is transferred to the ground through an insulating bottle hook and a transfer rope;
step 5.15: transmitting a new insulator string to be replaced to an operation area through a transmission rope by electrician D1 and electrician D2;
step 5.16: an electrician A connects the insulator with the cross arm, and an M pin is arranged;
step 5.17: slowly tightening the pulley block by an electrician D3, and resetting the lead by using an insulating support and a pull rod by the electrician B and the electrician C in a matched manner; an electrician B is connected with the bowl head hanging plate and is provided with an M pin;
step 5.18: after the new insulator is installed, checking the stress condition of the new insulator by an electrician B.
The specific method for removing the insulation measures in the step 6.2 is as follows:
the electrician A and the electrician B cooperate to remove the insulating shielding isolation measures, the removing sequence is from far to near, from top to bottom, the grounding body is firstly conducted and then the live body is conducted, and the removing shielding parts are wires with adjacent operation points and suspension clamps in sequence.
The specific method for removing the insulation measures in the step 6.2 is as follows:
removing the insulating support rod by an electrician C, transmitting the insulating support rod to the ground through a transmission rope, and returning the electrician C to the ground;
and the insulation pull rod is removed by an electrician B, and is transmitted to the ground through the transmission rope, and the electrician B returns to the ground.
And step three, when insulation measures are set in the operation area:
the safety distance between the electrician and the charged body is not less than 0.6m;
the overlap joint between the insulating shielding tools is not less than 300mm;
the effective insulation length of the operation insulation operation rod is not less than 0.9m.
In step 5.3 the electrician D2 releases the pulley block, in particular to disengage the wire from the insulator and lowers it by 0.3m-0.6m.
The specific steps of preparing work before operation in the first step are as follows:
step 1.1: setting a safety fence and a safety warning sign on site by workers, and classifying and placing insulating operation tools on a dampproof tarpaulin;
step 1.2: the staff checks the double-weighing number and the rod number information of the working line, and checks whether the line device has live working conditions or not, and the checking items comprise: the method comprises the steps of operating the electric pole burial depth, the pole body quality, the appearance of an insulator string, whether dangerous points exist on two sides of an operating point and adjacent pole tower wires or not and weather conditions;
step 1.3: the staff applies for permission work, fills in permission time on the work ticket and signs;
step 1.4: checking the working content by the inspector, and signing and confirming on the working ticket;
step 1.5: the inspector performs appearance inspection on the insulating tools piece by piece, uses an insulating resistance detector to detect the surface insulating resistance value of the insulating tool in a segmented manner, and registers the detection result;
step 1.6: and detecting the new insulator string to be replaced by an inspector, and registering a detection result.
Compared with the prior art, the invention has the following beneficial effects: the invention provides a method for replacing an insulator of a 35kV power grid line in an electrified manner by adopting an insulating rod operation method, which is based on the mutual cooperation of a plurality of field workers, and adopts a professional tool to remove and replace an old insulator arranged on an electric pole, so that the problem that the insulator of the 35kV power grid line is replaced in an electrified state under the condition that an insulating arm vehicle cannot reach an operation field is solved; according to the invention, the insulating operating rod and the corresponding insulating tools are used by staff, the mode of pole climbing operation is adopted to replace the insulating glove operation method of the insulating bucket arm vehicle, the whole replacement operation process is more efficient and safer, and the method is applicable to the replacement operation of all-terrain linear insulators.
Drawings
The invention is further described below with reference to the accompanying drawings:
FIG. 1 is a flowchart illustrating the steps of a replacement operation according to the present invention;
FIG. 2 is a diagram showing the effect of the insulation shielding measures in embodiment 1 of the present invention;
FIG. 3 is a diagram showing the effect of the replacement operation according to embodiment 1 of the present invention;
fig. 4 is an effect diagram of the replacement operation according to embodiment 2 of the present invention.
Detailed Description
As shown in fig. 1, the invention provides a method for replacing a 35kV linear insulator string by adopting an insulating operation rod in a live-wire manner, which solves the problems that the circuit topography is complex in insulator replacement operation, and an insulating arm vehicle for operation cannot be in place and cannot perform live-wire operation.
The operation method provided by the invention specifically comprises the following steps when being executed:
step 1: reconnaissance is carried out to the operation scene, including checking work circuit double-weighing number, pole number by the work responsible person, work responsible person checks whether the circuit device possesses live working condition, and the content that the operation should check and confirm has:
1) The working electric pole is buried deeply, and the rod body is of a quality;
2) Checking the appearance of the insulator string, wherein if cracks are serious and the insulator string is in danger of falling off, taking measures into consideration, and controlling the insulator string not to perform the work;
3) Checking whether the two sides of the operation point and the adjacent tower wires are burnt, broken and other dangerous points affecting the operation.
In addition, it is necessary for the work person in charge to check the weather conditions of the work site: live working should be performed in good weather, and live working is not suitable when wind power is greater than 5 levels or humidity is greater than 80%. And if lightning, snow, hail, rain, fog and other bad weather occur, the live working is forbidden. If the weather suddenly changes in the live working process, the working should be stopped immediately, the personnel should be evacuated, the normal condition of the equipment should be recovered, or temporary safety measures should be taken when the safety of the personnel and the equipment is possibly endangered.
Finally, the work responsible person checks the security measures listed in the work ticket and supplements the security measures on the work ticket.
Step 2: executing a work permission system, applying permission work to an on-duty regulation person by a work responsible person, wherein the permission content comprises: reporting the name of the person in charge; reporting the work place (double name) and work content, planning work time; reporting the working conditions (including weather conditions, surrounding equipment, etc.); apply for to deactivate the reclosing device of the working line (double name);
after the permission, the permission time is filled in and signed on the work ticket.
Step 3: before working, the method can: the working staff announces the working ticket, and the working staff checks the mental state of the members of the working team, hands over the working task to divide work, informs dangerous points, and takes security measures and technical measures in the hand over work; the work responsible person checks whether each member of the team definitely divides work tasks, safety measures and technical measures; and finally, signing and confirming the work ticket and the operation instruction by each member of the team.
Step 4: arranging a work site, wherein the arrangement content comprises:
the work responsible person organizes team members and sets up the security fence and the security warning sign of the job site:
1) The range of the safety fence should consider the influence of high altitude falling and high altitude falling objects in the operation and road traffic, and if necessary, the safety fence contacts traffic departments;
2) The entrance and exit of the fence should be arranged reasonably, and hang the sign board for 'entering and exiting from the fence' and working here;
placing an insulating tool on the dampproof tarpaulin:
1) The dampproof tarpaulin should be clean and dry;
2) The tools are classified and placed according to the positioning management requirement;
3) The insulating tools and instruments cannot be mixed with metal tools and materials.
Step 5: checking the insulating tools, checking the insulating tools piece by an inspector, wherein the checking contents comprise:
1) The inspector should wear clean and dry gloves;
2) The surface of the insulating tool is not worn, deformed and damaged, and the operation is flexible;
3) The personal safety protection and shielding tools should be pinhole free, sand hole free and crack free;
4) Checking the appearance of the omnibearing insulation safety belt and performing an impact test;
5) Checking the appearance of the climbers, wherein no open welding is needed, the rubber is good, the bolts are completely fastened, and an impact test is performed;
6) And (3) self-checking the electroscope, and detecting by using an industrial frequency high-voltage generator.
Using an insulation resistance detector to detect the surface insulation resistance value of the insulation tool in a segmented manner:
1) The measuring electrode meets the rule requirement (extremely wide 2cm, extremely spacing 2 cm);
2) Correctly using (self-checking and measuring) an insulation resistance detector (a spot measurement method should be adopted, and an electrode should not slide on the surface of an insulation tool so as to avoid scratching the surface of the insulation tool);
3) The insulation resistance value must not be lower than 700M Ω;
4) The operator at the electrode end should wear the insulating glove to detect.
And reporting the checking result to a work responsible person after the checking of the insulating tools is finished.
Step 6: detecting (new) insulators, wherein the detection content comprises: cleaning the insulator, performing surface inspection, wherein the surface of the porcelain piece is smooth and has no cracks, and detecting that the insulation resistance of the insulator string is not lower than 500MΩ by using an insulation detector; the surface of the composite insulator should have no cracks, no aging and delivery qualification; and after the detection is finished, reporting the detection result to a work responsible person.
The invention adopts two embodiments when the insulation measures are arranged in the operation area and the linear insulator string is removed and replaced, wherein, the embodiment 1 is an operation scheme under the insulation shielding and isolation measures, and the embodiment 2 is an operation scheme under the insulation pull rod and the insulation support rod which are arranged in a transmission way, and the invention is specifically as follows.
For example 1:
step 7: the electrician on the pole carries the transmission rope and climbs the pole:
the electrician A and the electrician B on the pole are required to wear the complete personal safety protection tools, and the safety protection tools comprise an insulating safety helmet, an insulating coat, an insulating glove (with protective gloves) and the like, and a work responsible person checks whether the personal safety protection tools of the electrician on the pole are worn correctly.
Then, an electrician A on the pole carries the insulating transmission rope, climbs the pole to a proper position under the cross arm, and ties the safety belt and the backup rope on a firm member.
Step 8: after the person in charge agrees, the electrician A on the pole uses the electroscope to test the lead, the insulator and the cross arm, and confirms that no electric leakage phenomenon exists.
Step 9: the transmission rope pulley is hung, an insulating limit baffle is installed, and the installation process is as follows:
1) Electrician A installs the transmission rope pulley on the cross arm, electrician B on the pole climbs the pole to the proper position under electrician A, electrician A helps electrician B tie the backup rope on the firm component;
2) After the work responsible person permits, the ground electrician D1 is matched with the lifting insulating limit baffle, and the electrician A and the electrician B are matched with each other to install the insulating limit baffle.
Step 10: zero value detection and pulley transfer are carried out on the insulator, and the specific steps are as follows:
1) The ground electrician D1 loads the voltage distributor, the gun type operating rod and the pin pulling pliers into a cylindrical tool bag and lifts the cylindrical tool bag in a matched mode, the electrician A hangs the cylindrical tool bag with the insulating operating rod on a cross arm, and after permission of a work responsible person, the electrician B uses the voltage distributor in the barrel to carry out zero value detection on the insulator;
2) After the zero test is finished, the electrician A transfers the insulation pulley to the side of the cross arm of the insulator to be replaced.
Step 11: the method comprises the following specific steps of:
1) After being licensed by a work responsible person, the electrician A and the electrician B are matched, and the electrified body which cannot meet the safety distance is insulated and shielded according to the shielding principle of 'from near to far, from bottom to top, firstly electrified body and then grounding body', wherein the shielded parts and the sequence are a wire clamp and a wire; as shown in fig. 2, the wire-clamping shielding cover is firstly arranged, and then the wire shielding covers are sequentially arranged in the sequence from 1 to 6;
2) When an electrician on the rod sets an insulating shielding isolation measure on the charged body, the action should be light and slow, a sufficient safety distance (not less than 0.6 m) should be kept between the electrician and the charged body, and the effective insulating length of the insulating operation rod is not less than 0.9m;
3) The insulating shielding isolation measures are strict and firm, and the lap joint between the insulating shielding tools is not smaller than 300mm;
step 12: the method for installing the bearing tool comprises the following specific steps:
after the work person in charge permits, the ground electrician D1 cooperates with the wire backup protection rope and the 2-2 pulley block to be transferred to the tower through the transfer rope, the electrician A and the electrician B cooperate with each other on the pole to assemble the wire backup protection rope and the 2-2 pulley block on the wire on the replaced insulator chain wire, and the wire backup protection rope is firstly installed, and then the insulation 2-2 pulley block is installed.
Step 13: the method for removing the linear insulator to be replaced comprises the following specific steps:
1) After being licensed by a work responsible person, the electrician B takes out the M pin through a pin taking device;
2) The ground electrician D1 cooperates with the continuous tightening pulley block, and the electrician B uses an insulating operating rod to separate the single-connection elbow from the insulator string;
3) The ground electrician D1 slightly releases the pulley block to separate the lead from the insulator and lowers the lead by 0.3m-0.6m;
4) Electrician A and electrician B are matched with each other, a stay bar hoop is arranged, an insulating operating rod is used for expanding a wire in a direction far away from an electric pole, and the operating rod is fixed at the hoop;
5) The electrician A separates the insulator from the cross arm, and transmits the old insulator string to the ground through the insulator bottle hook and the transmission rope;
6) The safety distance between the staff on the rod and the charged body is more than 0.6 meter, and the effective length of the insulating operating rod is more than 0.9 meter.
Step 14: the method for installing the new insulator comprises the following specific steps:
1) The ground electrician D1 transmits a new insulator string to be replaced to the rod through a transmission rope;
2) After being licensed by a work responsible person, an electrician A connects the insulator with the cross arm, and installs an M pin;
3) Electrician A and electrician B cooperate to remove the insulating stay bar and the stay bar anchor ear;
4) The ground electrician D1 is matched with the tightening insulating pulley block, and the electrician B is connected with the single-connection elbow. And installing an M pin;
5) The safety distance between the staff on the rod and the charged body is more than 0.6 meter, and the effective length of the insulating operating rod is more than 0.9 meter.
Step 15: after being licensed by a work responsible person, electrician A and electrician B cooperate to dismantle the pulley block and the wire backup protection rope, and the pulley block and the wire backup protection rope are transmitted to the ground through the transmission rope.
Step 16: after the permission of the working responsible person, electrician A and electrician B cooperate, demolish the insulating shielding isolation measure according to the principle of "from far to near, from top to bottom, grounding body first and then charging body"; in the dismantling process, the dismantling sequence is a wire and a wire clamp which are adjacent to an operation point in sequence; firstly removing the wire shielding cover according to the sequence from No. 6 to No. 1, and then removing the wire clip shielding cover; when the insulating shielding isolation measures on the charged body are removed, the action should be light, and a sufficient safety distance should be kept between the insulating shielding isolation measures and the charged body and between the insulating shielding isolation measures and adjacent wires.
Step 17: after being licensed by a work responsible person, the electrician A transmits the cylindrical tool bag to the ground, and the electrician A and the electrician B are matched to remove the insulating limit baffle and transmit the insulating limit baffle to the ground;
step 18: after the work responsible person permits, electrician A removes the insulation pulley and the insulation transmission rope on the operation cross arm.
Step 19: and (3) checking the construction quality by an electrician A, confirming that no omission exists on the rod, ensuring that the checking device has no defects and meets the operation conditions, and finally reporting the construction quality to a work responsible person.
Step 20: after being permitted by the work responsible person, the electrician A returns to the ground and withdraws from the pole tower.
For example 2:
step 7: the electrician on the pole carries the transmission rope and climbs the pole:
the personal safety protection tools requiring the electrician A, the electrician B and the electrician C to wear the whole set on the rod comprise an insulating safety helmet, an insulating coat, an insulating glove (with protective gloves) and the like, and a work responsible person checks whether the personal safety protection tools of the electrician on the rod are worn correctly or not.
Then, an electrician A on the pole carries the insulating transmission rope, climbs the pole to a proper position under the cross arm, and respectively ties the safety belt and the backup rope on the firm member.
Step 8: after the person in charge agrees, the electrician A on the pole uses the electroscope to test the lead, the insulator and the cross arm, and confirms that no electric leakage phenomenon exists.
Step 9: zero value detection and pulley transfer are carried out on the insulator, and the specific steps are as follows:
1) The ground electrician D3 loads the voltage distributor, the pin pulling clamp and the bowl head removing device into a cylindrical tool bag, the ground electrician D1 and the ground electrician D2 are matched to lift the cylindrical tool bag, the electrician A hangs the cylindrical tool bag with the insulating operating rod on a cross arm, and after the electric electrician is permitted by a work responsible person, the electrician A uses the voltage distributor in the barrel to carry out zero value detection on the insulator;
2) After the zero test is finished, the electrician A transfers the insulation pulley to the side of the cross arm of the insulator to be replaced.
Step 10: the method for installing and fixing the insulating support and the pull rod comprises the following specific steps:
1) After the work responsible person permits, electrician B climbs the rod to a proper position below electrician A, ground electrician D1, D2 transmit the pull rod fixer to the rod, electrician B installs the pull rod fixer at a proper position, after installing, ground electrician D1, D2 transmit the insulating pull rod to the rod, electrician B hooks the front end of the insulating pull rod to the wire and locks, fix the rear end of the insulating pull rod on the pull rod fixer reliably;
2) After the work responsible person permits, electrician C climbs the pole to a proper position below electrician B, ground electrician D1, D2 transmit the pole holder to pole, electrician C installs the pole holder in the proper position, after installing, ground electrician D1, D2 transmit the insulating pole to pole, electrician C hooks the front end of the insulating pole and locks the wire, fix the insulating pole on pole holder reliably;
step 11: the method for installing the bearing tool comprises the following specific steps:
1) After being licensed by a work responsible person, the ground electricians D1 and D2 transmit the 2-2 insulated pulley block and the wire backup protection rope to the rod, and the electricians A and B mutually cooperate to assemble the 2-2 insulated pulley block and the wire backup protection rope on the replaced insulator string wire;
2) The ground electrician D3 tightens up the pulley block to enable each part to be slightly stressed, and the electrician B checks the stress condition of each part.
Step 12: the method for replacing the linear insulator comprises the following specific steps of:
1) After being permitted by a work responsible person, the electrician B takes out the locking pin of the bowl head hanging plate at the side of the insulator wire through the pin remover;
2) Under the command of a work responsible person, a ground electrician D3 is matched with a slight tightening pulley block, and an electrician B uses an insulating operating rod to disconnect an insulator string from a bowl head hanging plate;
3) Slowly loosening the tail rope of the pulley block by the ground electrician D3, and simultaneously, mutually matching the electrician B and the electrician C, and expanding the lead towards the direction far away from the electric pole by more than 0.5m by using a branch and a pull rod;
4) The electrician A uses an insulating bottle hook to hook a linear insulator string, the old insulator string is taken off and transferred to the ground under the cooperation of the electricians D1 and D2 on the ground, meanwhile, a new insulator string is followed to a working position, the electrician A connects the new insulator string with a cross arm, and a locking pin is installed;
5) The ground electrician D3 is matched with the slow tightening insulating pulley block, and simultaneously electrician B and electrician C are mutually matched, and the wire is restored to the original position by using the branch and the pull rod;
6) An electrician B uses an insulating operation rod to connect the bowl head hanging plate with the linear insulator chain, installs a locking pin, checks the connection condition and confirms that the connection is reliable;
7) In the operation process, the minimum safe distance between the operator on the rod and the electrified body is not smaller than 0.6 meter, the minimum safe distance between the operator on the rod and the electrified body is not smaller than 0.8 meter, the minimum effective insulation length of the insulation bearing tool is not smaller than 0.6 meter, and the minimum effective insulation length of the insulation operation tool is not smaller than 0.9 meter.
Step 12: after being licensed by a work responsible person, electrician A and electrician B cooperate to dismantle the pulley block and the wire backup protection rope, and the pulley block and the wire backup protection rope are transmitted to the ground through the transmission rope.
Step 13: after the permission of the work responsible person, the electrician B and the electrician C detach the branch, the pull rod and the fixer respectively and transmit the branch, the pull rod and the fixer to the ground, and the electrician B and the electrician C return to the ground;
step 14: after the work responsible person permits, electrician A removes the insulation pulley and the insulation transmission rope on the operation cross arm.
Step 15: and (3) checking the construction quality by an electrician A, confirming that no omission exists on the rod, ensuring that the checking device has no defects and meets the operation conditions, and finally reporting the construction quality to a work responsible person.
Step 16: after being permitted by the work responsible person, the electrician A returns to the ground and withdraws from the pole tower.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (10)
1. An operation method for replacing a 35kV linear insulator chain in an electrified manner is characterized by comprising the following steps of: the method comprises the following operation steps:
step one: preparation before performing the operation: the method comprises reconnaissance of the field operation environment, checking of the operation towers, checking that equipment to be replaced and adjacent towers meet operation requirements, preparing operation tools and equipment fences at operation points, performing appearance inspection test, preparing new insulator strings, and performing appearance inspection test;
step two: the insulating transmission rope is hung on the pole tower for boarding operation, and equipment to be replaced is detected:
step 2.1: arranging an electrician A to wear personal protection tools, carrying an insulating pulley transmission rope and an electroscope to ascend to the lower part of a cross arm of an operation point and the horizontal position of an insulator string to be replaced, wherein the electrician A uses the electroscope to test electricity of a wire, the insulator and the cross arm respectively, confirms that no electric leakage phenomenon exists, and hangs the insulating pulley transmission rope;
arranging an electrician B to climb a pole tower to the lower part of the electrician A to work together after wearing personal protection tools;
arranging electricians D1 and D2 to transmit tools and tools on the ground to the pole tower to cooperate with electricians on the pole tower to work;
step 2.2: transmitting an insulator detector to a tower position by ground electricians D1 and D2, wherein electrician A detects insulator strings to be replaced piece by using the insulator detector, and ensuring that the number of good insulator pieces is not less than 2;
step three: setting an insulating measure in an operation area;
step four: according to the wire backup protection measures and the wire collection tools:
step 4.1: electricians D1 and D2 transfer the wire backup protection rope and the pulley block to an operation area through the transfer rope, the electricians A and B mutually cooperate to assemble the pulley block on the replaced insulator string wire, the wire backup protection rope is firstly installed, then the insulating pulley block is installed, and the installation of a bearing tool is completed;
step 4.2: after the installation is finished, an electrician B checks whether the wire backup protection rope is hung well or not, and whether the pulley block is stressed normally or not;
step five: dismantling and replacing the linear insulator string;
step six: executing ending work:
step 6.1: removing the pulley block and the wire backup protection rope by the cooperation of electrician A and electrician B, and transmitting the pulley block and the wire backup protection rope to the ground through the transmission rope;
step 6.2: removing the corresponding insulation measures;
step 6.3: conveying the insulating tool back to the ground by electrician a;
step 6.4: removing the insulation pulley and the insulation transfer rope from the operation cross arm by an electrician A;
step 6.5: and checking and accepting the replacement operation by an inspector, checking the construction quality and reporting the construction quality.
2. The method for replacing a 35kV linear insulator string in an electrified manner according to claim 1, wherein the method comprises the following steps: the insulation measures set in the third step are specifically transmission and insulation shielding and isolation measures, and the setting method is as follows:
electrician D1, D2 transmit insulating shielding and isolating tool, use insulating operation rod type instrument to set up insulating shielding isolation measure in electrified wire department by electrician A and electrician B cooperation, according to near to far, from bottom to top, the electrified body is first electrified and then the setting sequence of grounding body, to the operation in-process can not satisfy the electrified body of safe distance to carry out insulating shielding, set up shielding position and be suspension clamp, wire in proper order, shielding position setting sequence is from the nearest beginning of operation electrician.
3. The method for replacing a 35kV linear insulator string in an electrified manner according to claim 1, wherein the method comprises the following steps: the insulation measures set in the third step are specifically that an insulation pull rod and an insulation support rod are transmitted and set, and the setting method is as follows:
additionally arranging electrician D3 to transmit tools and tools on the ground to the pole tower to work in cooperation with electrician on the pole tower;
arranging electrician C to wear personal protection tools to climb a pole tower to the lower part of electrician B;
electrician D1, D2 transmit the insulating tie rod and its anchor, install the insulating tie rod on the pole by electrician B;
electrician D1, D2 transmit insulating support rod and its fixer, install insulating support rod fixed on pole by electrician C.
4. The method for replacing a 35kV linear insulator string in an electrified manner according to claim 2, wherein the method comprises the following steps: the specific steps of dismantling and replacing the linear insulator string in the fifth step are as follows:
step 5.1: taking out the M pin on the side of the insulator wire by an electrician B through a pin pulling clamp;
step 5.2: the pulley block is continuously tightened by the cooperation of an electrician D2, and the electrician B operates the insulating operation rod to separate the bowl head hanging plate from the insulator string;
step 5.3: loosening the pulley block by an electrician D2 to separate the lead from the insulator and then lowering the lead;
step 5.4: the electrician A and the electrician B are matched with each other, a stay bar hoop is arranged, an insulating operating rod is operated to prop the wires away from the electric pole, and the insulating operating rod is fixed at the hoop;
step 5.5: the insulator is separated from the cross arm by an electrician A, and the old insulator string is transferred to the ground through an insulating bottle hook and a transfer rope;
step 5.6: transmitting a new insulator string to be replaced to an operation area through a transmission rope by electrician D1 and electrician D2;
step 5.7: an electrician A connects the insulator with the cross arm, and an M pin is arranged;
step 5.8: removing the insulating stay bar and the stay bar hoop by the cooperation of electrician A and electrician B;
step 5.9: an electrician D1 is matched with the tightening insulating pulley block, an electrician B is connected with the bowl head hanging plate, and an M pin is arranged;
step 5.10: after the new insulator is installed, checking the stress condition of the new insulator by an electrician B.
5. The method for replacing a 35kV linear insulator string in an electrified manner according to claim 3, wherein the method comprises the following steps: the specific steps of dismantling and replacing the linear insulator string in the fifth step are as follows:
step 5.11: taking out the M pin on the side of the insulator wire by an electrician B through a pin pulling clamp;
step 5.12: the pulley block is continuously tightened by the cooperation of an electrician D2, and the electrician B operates the insulating operation rod to separate the bowl head hanging plate from the insulator string;
step 5.13: after the electrician D2 releases the pulley block, the electrician B and the electrician C cooperate with each other to use the insulating support and the pull rod to move the lead in the direction far away from the electric pole;
step 5.14: the insulator is separated from the cross arm by an electrician A, and the old insulator string is transferred to the ground through an insulating bottle hook and a transfer rope;
step 5.15: transmitting a new insulator string to be replaced to an operation area through a transmission rope by electrician D1 and electrician D2;
step 5.16: an electrician A connects the insulator with the cross arm, and an M pin is arranged;
step 5.17: slowly tightening the pulley block by an electrician D3, and resetting the lead by using an insulating support and a pull rod by the electrician B and the electrician C in a matched manner; an electrician B is connected with the bowl head hanging plate and is provided with an M pin;
step 5.18: after the new insulator is installed, checking the stress condition of the new insulator by an electrician B.
6. The method for replacing a 35kV linear insulator string in an electrified manner according to claim 4, wherein the method comprises the following steps: the specific method for removing the insulation measures in the step 6.2 is as follows:
the electrician A and the electrician B cooperate to remove the insulating shielding isolation measures, the removing sequence is from far to near, from top to bottom, the grounding body is firstly conducted and then the live body is conducted, and the removing shielding parts are wires with adjacent operation points and suspension clamps in sequence.
7. The method for replacing a 35kV linear insulator string in an electrified manner according to claim 5, wherein the method comprises the following steps: the specific method for removing the insulation measures in the step 6.2 is as follows:
removing the insulating support rod by an electrician C, transmitting the insulating support rod to the ground through a transmission rope, and returning the electrician C to the ground;
and the insulation pull rod is removed by an electrician B, and is transmitted to the ground through the transmission rope, and the electrician B returns to the ground.
8. A method for live replacement of a 35kV linear insulator string according to claim 2 or 3, characterized by: and step three, when insulation measures are set in the operation area:
the safety distance between the electrician and the charged body is not less than 0.6m;
the overlap joint between the insulating shielding tools is not less than 300mm;
the effective insulation length of the operation insulation operation rod is not less than 0.9m.
9. The method for replacing a 35kV linear insulator string in an electrified manner according to claim 4, wherein the method comprises the following steps: in step 5.3 the electrician D2 releases the pulley block, in particular to disengage the wire from the insulator and lowers it by 0.3m-0.6m.
10. The method for replacing a 35kV linear insulator string in an electrified manner according to claim 1, wherein the method comprises the following steps: the specific steps of preparing work before operation in the first step are as follows:
step 1.1: setting a safety fence and a safety warning sign on site by workers, and classifying and placing insulating operation tools on a dampproof tarpaulin;
step 1.2: the staff checks the double-weighing number and the rod number information of the working line, and checks whether the line device has live working conditions or not, and the checking items comprise: the method comprises the steps of operating the electric pole burial depth, the pole body quality, the appearance of an insulator string, whether dangerous points exist on two sides of an operating point and adjacent pole tower wires or not and weather conditions;
step 1.3: the staff applies for permission work, fills in permission time on the work ticket and signs;
step 1.4: checking the working content by the inspector, and signing and confirming on the working ticket;
step 1.5: the inspector performs appearance inspection on the insulating tools piece by piece, uses an insulating resistance detector to detect the surface insulating resistance value of the insulating tool in a segmented manner, and registers the detection result;
step 1.6: and detecting the new insulator string to be replaced by an inspector, and registering a detection result.
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