CN104953504B - A kind of transmission line located Lightning Transformation methods of 35kV - Google Patents
A kind of transmission line located Lightning Transformation methods of 35kV Download PDFInfo
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- CN104953504B CN104953504B CN201510269907.2A CN201510269907A CN104953504B CN 104953504 B CN104953504 B CN 104953504B CN 201510269907 A CN201510269907 A CN 201510269907A CN 104953504 B CN104953504 B CN 104953504B
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Abstract
A kind of transmission line located Lightning Transformation methods of 35kV of the present invention, belong to electric power facility anti-thunder technical field；The technical problem of solution is：A kind of 35kV transmission line of electricity remodeling methods for being prevented effectively from transmission line lightning stroke harm are provided；The technical scheme used for：A kind of transmission line located Lightning Transformation methods of 35kV, comprise the following steps：First, the shaft tower type of existing 35kV electric power line pole towers equipment, insulation configuration, landform situation and history lightning fault information are collected, data statistics is carried out to the shaft tower equipment for not meeting lightning protection requirement；Secondly, the transmission line tower grounding network for not meeting lightning protection requirement is transformed, difference Insulation Transformation and zinc oxide surge arresters；Again, by improved 35kV electric power line pole towers equipment state, typing power production management system, and combined with GIS information, form electric power line pole tower equipment GIS map；Suitable for power system.
Description
Technical field
A kind of transmission line located Lightning Transformation methods of 35kV of the present invention, belong to the technical field of protection of electric power facility.
Background technology
It is well known that 35kV transmission lines of electricity are mostly earth-free or small earthing current system, it is characterized in that single-phase earthing will not draw
Play line tripping, power scheduling code regulation：Single-phase earthing operation can be no more than 2 hours, and the continuous increase of power system capacity is actual
Middle system can not bear the single-phase earthing operation of 2 hours, hidden danger be brought to electric power safety operation, therefore, it is necessary to avoid single-phase
Continuous earth failure occurs.
Usually, after 35kV transmission lines of electricity single-phase earthing, by 30s delay, ground connection information will incoming power scheduling
Monitoring system, dispatcher requires according to schedule regulation, the measure for selecting drawing one by one is taken the 35kV line segregations being grounded, to judge
Faulty line simultaneously eliminates ground signalling, specifically, and 35kV transmission lines of electricity occur after single-phase continuous earth, and dispatcher can be according to rationing the power supply
Tagmeme is drawn in tagmeme and choosing, orders to pull open the circuit disconnecting link of all 35kV outgoing line intervals one by one, until line-to-ground blackout is
Only, therefore, the single-phase continuous earth of single line can cause a plurality of circuit choosing to draw stoppage in transit, and phase fault event occurs for 35kV transmission lines of electricity
Barrier, quick-break and excessively stream can directly contribute line tripping stoppage in transit；And single-phase transient earthing failure is because ground signalling reaction is fast, disappear
Mistake is fast, will not pass to Dispatching monitor and control system substantially, therefore does not result in line outage.
To sum up, windage yaw, bird pest, the filth of 35kV transmission lines of electricity generation in addition to alternate windage yaw and large area pollution flashover etc. is single-phase connects
During ground factor, line tripping will not be caused substantially, therefore, windage yaw, bird pest, dirt can be excluded to the improvement emphasis of 35kV transmission lines of electricity
It is dirty to wait failure caused by single-phase earthing to stop transport；Understood on the basis of the analysis of above-mentioned trip reason, cause 35kV to transmit electricity in operation
The main cause that line fault is stopped transport is thunderbolt, because 35kV transmission lines of electricity have substantial amounts of porcelain insulator operation, because of zero
Be worth replacing insulator not in time, the reason such as single-phase earthing accelerated ageing, cause the operation of a large amount of low values, zero resistance insulator, in thunder
Insulation breakdown is easily caused to form single-phase continuous earth and phase-to phase fault during rainy season, simultaneously because 35kV transmission lines of electricity ground connection dress
Defect is put, after shaft tower thunderbolt, it is impossible to lightning current of releasing in time, cause line tripping to stop transport.
Therefore, the resistance to thunder level of 35kV transmission lines of electricity is improved, 35kV transmission line lightning stroke trip-out rates are reduced, as current urgency
The difficulties that need to be solved.
The content of the invention
The present invention overcomes the shortcomings of that prior art is present, and technical problem to be solved is：There is provided one kind can be prevented effectively from
The 35kV transmission line of electricity remodeling methods of transmission line lightning stroke harm, and can prevent single-phase permanent fault and phase fault from sending out
It is raw, single-phase permanent fault and phase fault are changed into single-phase transient earthing failure.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：A kind of 35kV is transmission line located anti-
Thunder remodeling method, comprises the following steps：
（1.1）The shaft tower type of existing 35kV electric power line pole towers equipment, insulation configuration, landform situation and history are struck by lightning
Fault message is collected, and data statistics is carried out to the shaft tower equipment for not meeting lightning protection requirement；
（1.2）The transmission line tower grounding network for not meeting lightning protection requirement is transformed；
（1.3）To insulator, poor Insulation Transformation is carried out；
（1.4）The mode zinc oxide surge arresters of commutation in turn are taken the electric power line pole tower equipment for not meeting lightning protection requirement；
（1.5）By improved 35kV electric power line pole towers equipment state, typing power production management system, and and GIS
Information is combined, and forms electric power line pole tower equipment GIS map.
In the present invention, the step（1.2）In to existing 35kV electric power line pole towers equipment carry out Grounding Network Reconstruction, bag
Include the following steps：
（1.2.1）The soil resistivity on electric power line pole tower equipment periphery is measured；
（1.2.2）Earth resistance and earthing electric network inspection are carried out to electric power line pole tower earthing or grounding means；
（1.2.3）Landform situation and soil resistivity with reference to residing for shaft tower equipment, to grounding resistance and counterpoises not
The earthing or grounding means of lightning protection requirement is met, Grounding Network Reconstruction is carried out；
（1.2.4）Down conductor tie point is transformed.
The step（1.3）In poor Insulation Transformation, comprise the following steps：
（1.3.1）By electric power line pole tower equipment, by arrangement mode of the wire on shaft tower, it is divided into：Wire triangle is arranged
Row, wire is horizontally arranged and wire is arranged vertically three kinds, and according to towards circuit large size side to by wire and insulator chain
Position is defined as：Left side bearing, center line and right side bearing；
（1.3.2）By the landform residing for electric power line pole tower equipment, it is respectively defined as：On the outside of hillside top, hillside, in hillside
Side is pacifically；
（1.3.3）Landform with reference to residing for electric power line pole tower equipment, and according to the position of wire and insulator chain, difference
Enter the difference of poor Insulation Transformation, the poor Insulation Transformation of wire horizontal line arrangement and wire vertical arrangement of row conductor rounded projections arranged absolutely
Edge is transformed.
The step（1.4）The method of middle zinc oxide surge arresters is：Take the mode of commutation in turn to be installed, and install
It is being subject to the location of thunderbolt.
The step（1.2.3）In the Grounding Network Reconstruction to shaft tower equipment, including：Grounding Network Reconstruction to concrete single pole,
The counterpoises of concrete double-rod are transformed and to the Grounding Network Reconstruction of steel tower；Wherein, the counterpoises of concrete single pole are transform as：In bar
Ground slot is laid to piece-root grafting on the outside of bolt connection position, is then each extended over and is laid radiation pole ground slot L1 and L2；To concrete double-rod
Grounding Network Reconstruction be：Lay ground slot on the outside of pole-footing earth stud link position, then each extend over lay radiation pole connect
Geosyncline L1 and L2；The counterpoises of steel tower are transform as：Looped network ground slot is laid on the outside of iron tower foundation position, is then prolonged respectively
Stretch and lay radiation pole ground slot L1, L2, L3 and L4.
The present invention has the advantages that compared with prior art：
1st, the transmission line located Lightning Transformation methods of a kind of 35kV of the invention, landform, Contact patch with reference to residing for shaft tower
With insulation configuration, differentiated lightning protection transformation is carried out to existing 35kV transmission lines of electricity, by being set to the shaft tower for not meeting lightning protection requirement
It is standby to carry out Grounding Network Reconstruction, poor Insulation Transformation and zinc oxide surge arresters, it can avoid 35kV electric power line pole tower equipment single-phase permanent
Ground connection and the generation of phase-to phase fault, greatly improved the resistance to thunder level of 35kV transmission lines of electricity, reduce tripping rate with lightning strike, greatly carry
The high availability coefficient of transmission line of electricity,
2nd, it is of the invention, by improved 35kV electric power line pole towers equipment state, typing power production management system, and with
GIS information is combined, and is formed electric power line pole tower equipment GIS map, is facilitated later stage work personnel to be constructed and managed operation, be
The construction of electric power standardization circuit provides data basis.
Brief description of the drawings
The present invention will be further described in detail below in conjunction with the accompanying drawings.
Fig. 1 is that ground slot of the present invention excavates schematic diagram；
Fig. 2 is concrete single pole Grounding Network Reconstruction schematic diagram of the present invention；
Fig. 3 is the double single pole Grounding Network Reconstruction schematic diagrames of concrete of the present invention；
Fig. 4 is steel tower Grounding Network Reconstruction schematic diagram of the present invention；
Fig. 5 is wire rounded projections arranged position of the present invention and title schematic diagram；
Fig. 6 is the horizontally arranged position of wire of the present invention and title schematic diagram；
Fig. 7 is wire of the present invention vertical arrangement position and title schematic diagram；
Fig. 8 is shaft tower of the present invention in status position view residing for mountain area；
In figure, 1 be hillside top, 2 be on the outside of hillside, 3 be on the inside of hillside.
Embodiment
As shown in Figures 1 to 8, a kind of transmission line located Lightning Transformation methods of 35kV, comprise the following steps：It is a kind of
The transmission line located Lightning Transformation methods of 35kV, comprise the following steps：（1.1）To existing 35kV electric power line pole towers equipment
Shaft tower type, insulation configuration, landform situation and history lightning fault information are collected, and the shaft tower for not meeting lightning protection requirement is set
It is standby to carry out data statistics；（1.2）The transmission line tower grounding network for not meeting lightning protection requirement is transformed；（1.3）To insulation
Son, carries out poor Insulation Transformation；（1.4）The mode of commutation in turn is taken to pacify the electric power line pole tower equipment for not meeting lightning protection requirement
Fill arrester；（1.5）By improved 35kV electric power line pole towers equipment state, typing power production management system, and and GIS
Information is combined, and forms electric power line pole tower equipment GIS map.
In the present embodiment, the step（1.2）In to existing 35kV electric power line pole towers equipment carry out Grounding Network Reconstruction,
Comprise the following steps：（1.2.1）The soil resistivity on electric power line pole tower equipment periphery is measured；（1.2.2）To transmission of electricity
Overhead line structures earthing or grounding means carries out earth resistance and earthing electric network inspection；（1.2.3）Landform with reference to residing for shaft tower equipment
Situation and soil resistivity, the earthing or grounding means of lightning protection requirement is unsatisfactory for grounding resistance and counterpoises, carries out Grounding Network Reconstruction；
（1.2.4）Down conductor tie point is transformed.
Specifically, the step（1.2.1）Resistivity measurement is carried out to the soil on electric power line pole tower equipment periphery, can be joined
The judgement of soil resistivity is carried out according to soil resistivity reference table, soil resistivity reference table is as shown in the table；
The step（1.2.3）Lightning protection requirement is unsatisfactory for grounding resistance and counterpoises and carries out Grounding Network Reconstruction, first,
As shown in figure 1, being excavated to ground slot, specific excavation requirement is：For Excavation In Mountain Areas depth h >=0.5m, opened for arable land
Dig depth h >=0.8m, the width a of different regions ground slot >=0.4m, ground slot excavation length b using meet radiation line length as
It is accurate；Secondly, transform not meeting lightning protection requirement transmission line tower grounding network, including：Grounding Network Reconstruction to concrete single pole,
Counterpoises transformation to concrete double-rod and the counterpoises transformation to steel tower；Wherein, concrete single pole and the ground network reconstruction of concrete double-rod, should
Away from ground slot is excavated outside pole-footing earth stud link position H >=1.5 meter, then each extend over excavation radiation pole ground slot L1,
L2；The ground network reconstruction of steel tower should excavate looped network ground slot outside base position H >=1.5 meter, then each extend over excavation radiation pole
Ground slot L1~L4；Further, radioactivity earthing pole should be laid on the middle position of ground slot during transformation, and mountain area uses soil removal and replacement
Should be first in the soil layer of low soil resistivity thick ground connection trench bottom laying 100mm, during then grounded round steels are laid on during transformation
Position is entreated, once, to prevent erosion, backfill is away from should be with stone at the 100mmm of ground for back-filling in layers, often backfill 100mm compactings
3 are pressed with soil：It is backfilling and compacted after 1 blending；Shown in radioactive ray earthing pole size according to the form below.
The step（1.2.4）When transforming down conductor tie point, conduction test should be done before transformation, is unsatisfactory for
It is required that at the top of the concrete bar at draw lower down conductor, material selection Q235 diameters are not less than 12mm galvanizing round steel, concrete list
Bar and concrete double-rod down conductor should draw under the lower grounding lead to original from bar top side face towards the circuit direction of advance left and right sides
Line link position, further, for ease of measurement, the connection of itself and down conductor is still connected by screw bolts, down conductor
When under drawing from bar top, it should be fixed once with anchor ear every 3m；When down conductor is by cross-arm, it should be reliably connected with cross-arm；When
When circuit has lightning conducter, down conductor application steel strand wires are reliably connected by parallel groove clamp with lightning conducter.
In the present embodiment, the step（1.3）In to existing 35kV and 110kV electric power line pole towers equipment carry out difference absolutely
Edge is transformed, and is comprised the following steps：（1.3.1）By electric power line pole tower equipment, by arrangement mode of the wire on shaft tower, it is divided into：
Wire rounded projections arranged, wire are horizontally arranged and wire is arranged vertically three kinds, and according to towards circuit large size side to by wire
It is defined as with the position of insulator chain：Left side bearing, center line and right side bearing；（1.3.2）By the ground residing for electric power line pole tower equipment
Shape, is respectively defined as：Hillside top, hillside outside, hillside inner side and flat-top；（1.3.3）With reference to residing for electric power line pole tower equipment
Landform, and according to the position of wire and insulator chain, poor Insulation Transformation, the wire level of row conductor rounded projections arranged are entered respectively
Poor Insulation Transformation, the poor Insulation Transformation of wire vertical arrangement of line arrangement.
Specifically, the poor Insulation Transformation of wire rounded projections arranged is：Hillside top center line keeps former insulation configuration constant, the left side
It is highly 146mm glass insulator that line increases by 2 chip architectures in former insulation configuration, configured to 5, and right side bearing is by 4 configurations；
Center line insulation configuration keeps constant on hillside, increases the glass that 2 chip architectures are highly 146mm on the outside of hillside in former insulation configuration
Insulator；Increase the glass insulator that 1 chip architecture is highly 146mm on the inside of hillside in former insulation configuration.Press center line 5 in level land
Piece, left side bearing 4, the configuration of right side bearing 3, it is mutually constant, in addition for compound inslation that composite insulator keeps one according to mentioned above principle
Two-phase is highly configured by increase by 1 and 2 chip architectures for 146mm glass insulator respectively；
The horizontally arranged poor Insulation Transformation of wire is；Specifically, hillside top center line keeps former insulation configuration constant, left side bearing
By 5 configurations, right side bearing by 4 configurations；Center line keeps former insulation configuration constant on hillside, on the outside of hillside in former insulation configuration
Increase the glass insulator that 2 chip architectures are highly 146mm；Increasing by 1 chip architecture in former insulation configuration on the inside of hillside is highly
146mm glass insulator；Level land left side bearing 4,3, center line, 4 configurations of right side bearing；Composite insulator is according to mentioned above principle
Keep one be mutually compound inslation it is constant, in addition two-phase respectively by increase by 1 and 2 chip architectures be highly 146mm glass insulator
Configuration；
Wire vertical arrangement poor Insulation Transformation be；Hillside top, on hillside by reach the standard grade 3,4, center line, offline 5 match somebody with somebody
Put.Level land is by 5, center line, reach the standard grade 3, offline 4 configurations；It is mutually compound inslation that composite insulator keeps one according to mentioned above principle
Son is constant, the glass insulator configuration of two-phase respectively by increase by 1 and 2 chip architectures highly for 146mm in addition；Strain rod tower is transformed
Method is；Strain rod tower insulation configuration is replaced by glass insulator for the whole of porcelain insulator, is arranged according to above-mentioned wire triangle
Row, wire is horizontally arranged and the principle of wire vertical arrangement carries out poor Insulation Transformation, increase piece number by etc. regular way carry out.
In the present embodiment, take the mode of commutation in turn to install the electric power line pole tower equipment for not meeting lightning protection requirement and keep away
The installation method of thunder device, wherein arrester is：First, in following easy generation thunderbolt location, such as：Landform, landforms：It is embosomed in hills
Moist basin, the Al-Jazeera shape hilltop, riverbed, river bend, small stream bank, near a river, reservoir edge, with the wind river valley or valley, groundwater seep
Or place of appearing, face south out slope or hillside windward；Geological condition：The conductive mineral ore in fault zone, underground or ore-rock on geological structure
Stone, the boundary of rock and soil, hillside and the intersection in rice field, rock at the foot of the hill have that the mountain valley of river is regional, low soil electricity
The area of resistance rate, level of ground water higher position, zinc oxide surge arresters；Secondly, the methods of zinc oxide surge arresters according to commutation in turn principle
Carry out, i.e., No. 1 tower installs left side bearing, No. 2 towers and installs center line, No. 3 towers installation right side bearings, by that analogy；Strain rod tower is according to list
The principle mutually installed is carried out, and the landform reasonable selection according to residing for shaft tower installs phase, and level land, hillside top are arranged on day side, mountain
Slope side is arranged on the outside of hillside；After shaft tower insulation configuration has been carried out differentiation transformation, arrester is arranged on what low insulation was configured
Xiang Shang.
A kind of transmission line located Lightning Transformation methods of 35kV of the present invention can be prevented effectively from transmission line of electricity there is provided one kind
The 35kV transmission line of electricity remodeling methods of Lightning disservice, solve the harm that 35kV power transmission lines Louis is struck by lightning, with prominent reality
Embodiments of the invention are explained in detail by matter feature and significant progress above in conjunction with accompanying drawing, but the present invention is not
It is limited to above-described embodiment, in the knowledge that those of ordinary skill in the art possess, ancestor of the present invention can also be not being departed from
Various changes can be made on the premise of purport.
Claims (5)
1. a kind of transmission line located Lightning Transformation methods of 35kV, it is characterised in that：Comprise the following steps：
（1.1）To the shaft tower type of existing 35kV electric power line pole towers equipment, insulation configuration, landform situation and history lightning fault
Information is collected, and data statistics is carried out to the shaft tower equipment for not meeting lightning protection requirement；
（1.2）The transmission line tower grounding network for not meeting lightning protection requirement is transformed；
（1.3）To insulator, poor Insulation Transformation is carried out；
（1.4）The mode zinc oxide surge arresters of commutation in turn are taken the electric power line pole tower equipment for not meeting lightning protection requirement；
（1.5）By improved 35kV electric power line pole towers equipment state, typing power production management system, and with GIS information
With reference to formation electric power line pole tower equipment GIS map.
2. a kind of transmission line located Lightning Transformation methods of 35kV according to claim 1, it is characterised in that：The step
Suddenly（1.2）In to existing 35kV electric power line pole towers equipment carry out Grounding Network Reconstruction, comprise the following steps：
（1.2.1）The soil resistivity on electric power line pole tower equipment periphery is measured；
（1.2.2）Earth resistance and earthing electric network inspection are carried out to electric power line pole tower earthing or grounding means；
（1.2.3）Landform situation and soil resistivity with reference to residing for shaft tower equipment, are unsatisfactory for grounding resistance and counterpoises
The earthing or grounding means of lightning protection requirement, carries out Grounding Network Reconstruction；
（1.2.4）Down conductor tie point is transformed.
3. a kind of transmission line located Lightning Transformation methods of 35kV according to claim 1, it is characterised in that：The step
Suddenly（1.3）In poor Insulation Transformation, comprise the following steps：
（1.3.1）By electric power line pole tower equipment, by arrangement mode of the wire on shaft tower, it is divided into：Wire rounded projections arranged, lead
Line is horizontally arranged and wire is arranged vertically three kinds, and according to towards circuit large size side to by the position of wire and insulator chain
It is defined as：Left side bearing, center line and right side bearing；
（1.3.2）By the landform residing for electric power line pole tower equipment, it is respectively defined as：Hillside top, on the outside of hillside, on the inside of hillside and
Level land；
（1.3.3）Landform with reference to residing for electric power line pole tower equipment, and according to the position of wire and insulator chain, carry out respectively
The poor Insulation Transformation of wire rounded projections arranged, the difference insulation of the poor Insulation Transformation of wire horizontal line arrangement and wire vertical arrangement change
Make.
4. a kind of transmission line located Lightning Transformation methods of 35kV according to claim 1, it is characterised in that：The step
Suddenly（1.4）The method of middle zinc oxide surge arresters is：Take the mode of commutation in turn to be installed, and installed in be subject to thunderbolt
Location.
5. a kind of transmission line located Lightning Transformation methods of 35kV according to claim 2, it is characterised in that：The step
Suddenly（1.2.3）In the Grounding Network Reconstruction to shaft tower equipment, including：Grounding Network Reconstruction to concrete single pole, the ground connection to concrete double-rod
Ground network reconstruction and the Grounding Network Reconstruction to steel tower；Wherein, the counterpoises of concrete single pole are transform as：In the connection of pole-footing earth stud
Ground slot is laid on the outside of position, then each extends over and lays radiation pole ground slot L1 and L2；It is to the Grounding Network Reconstruction of concrete double-rod：
Ground slot is laid on the outside of pole-footing earth stud link position, then each extends over and lays radiation pole ground slot L1 and L2；To iron
The counterpoises of tower are transform as：Looped network ground slot is laid on the outside of iron tower foundation position, then each extend over lay radiation pole connect
Geosyncline L1, L2, L3 and L4.
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| CN201510269907.2A CN104953504B (en) | 2015-05-25 | 2015-05-25 | A kind of transmission line located Lightning Transformation methods of 35kV |
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| CN201510269907.2A CN104953504B (en) | 2015-05-25 | 2015-05-25 | A kind of transmission line located Lightning Transformation methods of 35kV |
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| CN111666528B (en) * | 2020-05-28 | 2023-10-24 | 中国电建集团福建省电力勘测设计院有限公司 | Method for evaluating transformation priority of transmission line towers in coastal typhoon areas |
| CN111817248B (en) * | 2020-06-05 | 2021-09-28 | 云南电网有限责任公司大理供电局 | Comprehensive lightning protection method for 35kV power transmission line |
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| WO2011119065A2 (en) * | 2010-03-24 | 2011-09-29 | Vladimir Aleksandrovitch Shkaptsov | Remote monitoring device for disposal conductor condition of the overhead transmission line |
| CN102072992B (en) * | 2010-10-26 | 2013-01-23 | 国网电力科学研究院武汉南瑞有限责任公司 | Detailed terrain data-based transmission line failure-shielding and lightning-protection performance evaluation method |
| CN102290775B (en) * | 2011-04-26 | 2015-03-25 | 国家电网公司 | Lightning-caused breaking prevention method for 10kV overhead insulating line |
| CN201975524U (en) * | 2011-04-29 | 2011-09-14 | 贵州电网公司输电运行检修分公司 | Arrangement structure for lightning protection grounding device of power tower |
| CN103001153B (en) * | 2012-12-20 | 2016-06-01 | 诸暨市供电局 | A kind of distribution network lightning protection method of economical rationality |
| CN103236666B (en) * | 2013-04-02 | 2015-12-09 | 国家电网公司 | Transmission line located lightening arresting method |
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2015
- 2015-05-25 CN CN201510269907.2A patent/CN104953504B/en active Active
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