CN103121019B - 500kV transmission line insulator live water flushing method - Google Patents
500kV transmission line insulator live water flushing method Download PDFInfo
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- CN103121019B CN103121019B CN201310073412.3A CN201310073412A CN103121019B CN 103121019 B CN103121019 B CN 103121019B CN 201310073412 A CN201310073412 A CN 201310073412A CN 103121019 B CN103121019 B CN 103121019B
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Abstract
The invention provides a kind of 500kV transmission line insulator live water flushing method, mainly comprise: the water resistance rate of setting water and adjustment hydraulic giant pressure; Judge tower upwind and wind-force, according to described wind direction and wind-force adjustment water column length; Hydraulic giant is placed on the position of setting, order from the bottom to top rinses the insulator of 500kV transmission line of electricity three-phase successively; Rinse insulator chain time, the insulator chain of subpunch downwind side, the insulator chain of backlash weather side, for suspension insulator, from bottom to top rinses successively piecewise, during flushing from side of wire successively rinse; Judge whether the insulator after rinsing occurs sewage drippage, local starting the arc phenomenon, if so, then again rinses corresponding insulator.Technology of the present invention can carry out living water washing operation to most 500kV transmission line of electricity, decreases line outage, prevents pollution flashover to occur, ensure that the safety and stablization of electrical network, create good economic and social benefits.
Description
Technical field
The present invention relates to ultra-high-tension power transmission line Anti-pollution Flashover, particularly relate to a kind of 500kV transmission line insulator live water flushing method.
Background technology
Along with the develop rapidly of industrial economy and urban construction, the requirement that more property is higher is proposed to the continuity of powering and quality, prevent transmission line of electricity pollution flashover, prevent the generation of electric grid large area power cut accident, guarantee that power network safety operation and electric power are reliably supplied extremely important.But transmission line equipment is chronically exposed in the Nature, particularly in industrialized regions, coastal and region, salt-soda soil, be subject to that industrial waste gas, seawater or nature are saline and alkaline, the effect of dust, usually can form filth to a certain degree at its insulator surface.These contain the filth of salt, acid, alkaline components, in general water soluble, be electrolyte, have very strong electric conductivity after filth is water-soluble.Contaminated insulator, conductance increases, and insulating properties reduce, and leakage current sharply increases, and its flashover voltage reduces greatly, now just pollution flashover may occur.Especially when insulator design leak than apart from inadequate or adopt insulator can not meet filth require time, pollution flashover just must occur.Pollution flashover accident, once occur, directly can cause user's large area, have a power failure for a long time, cause power supply reliability to decline, thus brings serious negative effect to industrial and agricultural production and resident living power utility, and this proposes very high requirement to transmission line of electricity operational management.
Ensureing power supply continuously, is the basic demand of each department of national economy to electric power.Livewire work, to the reliability improving power supply, reduces and has a power failure, have very large economic and social benefit.And livewire work mode at present power system is varied, and main charged anti-pollution measure has charged dry (machinery) cleaning, charged air-blowing cleaning, living water washing etc.Wherein the charged methods such as (machinery) cleaning, charged air-blowing cleaning of doing all also exist obvious limitation, and living water washing is a kind of livewire work mode of cleaning electric power electroceramics or glass external insulation with the pressure water column of high resistivity.Be disclose one " mobile type live washing device for transmission line " in the Chinese patent of 200910039280.6 at application number, it is rational in infrastructure, safe, reliable, convenient to have, and is applicable to the feature of remote, high efficiency, Large scale field operation.Therefore, living water washing is not only safe and reliable technically, and compared with alternate manner, has many-sided advantage, has that uninterrupted power supply, cleaning performance are good, efficiency advantages of higher, is one of effective measures preventing electric device generation pollution flashover.
At present, be directed to the general efficiency of 500kV transmission line insulator live water flushing method lower, therefore, the flushing of 500kV electric transmission line isolator remains an assistant officer anti-soil technology difficult problem to be solved.
Summary of the invention
Based on this, be necessary to provide a kind of 500kV transmission line insulator live water flushing method, in conjunction with mobile type live washing device for transmission line, rinse for 500kV electric transmission line isolator, there is the advantages such as efficiency is high, cost is low, scope is wide, effective, safe, convenient.
A kind of 500kV transmission line insulator live water flushing method, comprises the steps;
Step a, mobile type live washing device for transmission line is carried out ground connection, the water resistance rate of setting water and adjustment hydraulic giant pressure;
Step b, connection hydraulic giant and aqueduct, carry out reliable ground to rifle mouth, judge tower upwind and wind-force, according to described wind direction and wind-force adjustment water column length;
Step c, hydraulic giant is placed on the position of setting, order from the bottom to top rinses the insulator of 500kV transmission line of electricity three-phase successively; Rinse insulator chain time, the insulator chain of subpunch downwind side, the insulator chain of backlash weather side, for suspension insulator, from bottom to top rinses successively piecewise, during flushing from side of wire successively rinse;
Steps d, judge whether the insulator after rinsing occurs sewage drippage, local starting the arc phenomenon, if so, then again rinses corresponding insulator, if not, terminate to rinse.
Above-mentioned 500kV transmission line insulator live water flushing method, when the normal charging operation of 500kV transmission line of electricity, utilize the water of setting water resistance rate and the water column of certain pressure, by backwashing manner that is more reasonable, efficient and that optimize, the filth of insulator surface is rinsed, living water washing operation can be carried out to most 500kV transmission line of electricity, decrease line outage, prevent pollution flashover to occur, ensure that the safety and stablization of electrical network, create good economic and social benefits.
Accompanying drawing explanation
Fig. 1 is the flow chart of the 500kV transmission line insulator live water flushing method of an embodiment;
Fig. 2 adopts rush-harvesting and rush-planting to replace the position view that douche rinses insulator;
Fig. 3 adopts single rifle to replace the schematic diagram of douche to insulator flushing process.
Detailed description of the invention
Be described in detail below in conjunction with the detailed description of the invention of accompanying drawing to 500kV transmission line insulator live water flushing method of the present invention.
Fig. 1 is the flow chart of the 500kV transmission line insulator live water flushing method of an embodiment, comprises the steps:
Step a, mobile type live washing device for transmission line is carried out ground connection, the water resistance rate of setting water and adjustment hydraulic giant pressure.
Particularly, after carrier vehicle is sailed and reached operation field, surface personnel checks the situation of mobile type live washing device for transmission line, first carries out ground connection to carrier vehicle, control water pipe to lay under steel tower by hydraulic means again, the water resistance rate of test water and adjustment hydraulic giant pressure.Preferably, the water resistance rate setting water is greater than 100000 Ω .cm.
Step b, connection hydraulic giant and aqueduct, carry out reliable ground to rifle mouth, judge tower upwind and wind-force, according to described wind direction and wind-force adjustment water column length.
Particularly, after on the reliable component that coaster is fixed on steel tower by work high above the ground personnel Deng Ta, in steel tower, cage is relaxed to ground insulation pull rope, surface personnel coordinate aqueduct and hydraulic giant traction on steel tower, work high above the ground personnel are fixed on water pipe after on the reliable component of steel tower, hydraulic giant and aqueduct are connected, check insulator situation, judge tower upwind and wind-force, reliable ground is carried out to rifle mouth, test hydraulic giant pressure and water column length, guarantee to start after above-mentioned situation all meets the requirements to rinse.
Step c, hydraulic giant is placed on the position of setting, order from the bottom to top rinses the insulator of 500kV transmission line of electricity three-phase successively; Rinse insulator chain time, the insulator chain of subpunch downwind side, the insulator chain of backlash weather side, for suspension insulator, from bottom to top rinses successively piecewise, during flushing from side of wire successively rinse.
Particularly, after completing rigging up and debugging at the scene, aloft work personnel start to carry out living water washing operation.Preferably, hydraulic giant can be placed on tower body or cross-arm, the distance from transmission line of electricity must first outside safe distance, and when keeping in flushing process rinsing, the angle of water column and insulator is greater than 45 °.
In addition, need to take corresponding technical safety measures in flushing process, work high above the ground personnel strictly must control the distance between human body and electrical body, guarantee personal safety.Must ensure that 500kV safe distance is greater than 3.6 meters.Work high above the ground personnel must dress and be made up of natural or synthetic material, the Work protection articles for use of conductive fiber are woven with: shielding (conduction) clothes, screening glove, screening socks and shielding footwear in it, and connect a bulk loop, prevent operating personnel to be subject to the impact of electric field.In flushing process, mobile type live washing device for transmission line answers reliable ground, should closely monitor water pump pressure and water level, and adjust in time during flushing, prevents from cutting off the water supply in flushing process or decompression.
Steps d, judge whether the insulator after rinsing occurs sewage drippage, local starting the arc phenomenon, if so, then again rinses corresponding insulator, if not, terminate to rinse.
Particularly, after flushing, judge whether the insulator rinsed occurs sewage drippage, local starting the arc phenomenon.If be clear water from what be rinsed that insulator equipment flows down after rinsing, then can think that this equipment has been rinsed totally, porcelain piece or glass insulator smooth and bright surface, noresidue stain, the dirt (filth that difficulty is removed, as the filth such as chemical industry, cement is not included), without sewage drippage, if there is sewage drippage, local starting the arc phenomenon, then again rinse corresponding insulator.
In one embodiment, rinse at described step c in the process of insulator, the change of Real-Time Monitoring tower upwind and wind speed, according to the angle of the wind direction adjustment hydraulic giant of described monitoring, suspend flushing operation when wind speed exceedes setting value; Said process ensure that the security of flushing process.
In one embodiment, if what rinse in described step c is four insulators in parallel, then adopts two hydraulic giants alternately to rinse four insulator strings when rinsing simultaneously, first rinsing the insulator of weather side during flushing, the insulator of afterflush downwind side.
Shown in Figure 2, Fig. 2 adopts rush-harvesting and rush-planting to replace the position view that douche rinses insulator, A, B two hydraulic giants rinse four series connection insulators respectively, wherein, rinse an insulator chain of weather side and an insulator chain of downwind side respectively according to wind direction two hydraulic giants.
Shown in figure 3, Fig. 3 adopts rush-harvesting and rush-planting to replace the schematic diagram of douche to insulator flushing process, and in figure, numerical order is flush sequence, and concrete order is: 13-region, 22-region, 12-region, 21-region, 11-region, region 23.Wherein, intensive arrow represents and rinses direction piecewise, and intensive arrow represents that flushing speed is low speed; Sparse arrow represents flyback, and sparse arrow represents at a high speed.
In one embodiment, rinse in the process of insulator at described step c, successively rinse piece by piece to middle part by bottom the insulating part of insulator, flyback is to bottom again, after confirmation bottom irrigation is clean, successively rinse piece by piece to top from bottom again, confirm that top arc extinguishing completes and after rinsing well, more progressively flyback to bottom.
Above-mentioned flushing process, adopts hydraulic giant one to rush twice methods, is applicable to the flushing that sheet number is less, soiled condition is not very serious insulator of insulator.
In one embodiment, rinse in the process of insulator at described step c, successively upwards rinse to 1/3rd piece by piece by bottom the insulating part of insulator, then flyback is to bottom, successively rinsed piece by piece by bottom 2/3rds, then flyback is to bottom, more successively rinsed piece by piece to top by bottom, confirm dirty without sewage after, flyback is to bottom.
Above-mentioned flushing process, adopts hydraulic giant one to rush three times methods, is applicable to the flushing of the insulator that sheet number is less, soiled condition is relatively serious of insulator.
In one embodiment, rinse in the process of insulator at described step c, successively upwards rinse piece by piece by bottom the insulating part of insulator, flyback after upwards rinsing four or five, again successively upwards rinse piece by piece from bottom again after flyback to bottom, then after increasing four or five again flyback to bottom, circulation flushing like this, until whole insulator has been rinsed, confirm to rinse without the dirty rear stopping of sewage.
Above-mentioned flushing process, adopts hydraulic giant one to rush many times methods, is applicable to the flushing of the insulator that sheet number is more, soiled condition is comparatively serious of insulator.
500kV transmission line insulator live water flushing method of the present invention, when the normal charging operation of transmission line of electricity, stepping on the mode of tower operation by rinsing personal height, utilizing the filth of mobile type live washing device for transmission line to insulator surface to rinse.Wherein, be not limited to certain specific mobile type live washing device for transmission line, be specially adapted to below height above sea level 1000m area, ac rated voltage 500kV electric transmission line hot-line water flushing operation.Can carry out flushing to great majority near the insulator of the 500kV transmission line of electricity of road network by the method, it is safe, convenient to have, the feature of broad covered area, is applicable to the living water washing requirement of most of 500kV transmission line of electricity, has good economic benefit.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (3)
1. a 500kV transmission line insulator live water flushing method, is characterized in that, comprises the steps:
Step a, mobile type live washing device for transmission line is carried out ground connection, the water resistance rate of setting water and adjustment hydraulic giant pressure;
Step b, connection hydraulic giant and aqueduct, carry out reliable ground to rifle mouth, judge tower upwind and wind-force, according to described wind direction and wind-force adjustment water column length;
Step c, hydraulic giant is placed on the position of setting, when keeping rinsing, the angle of water column and insulator is greater than 45 °, and order from the bottom to top rinses the insulator of 500kV transmission line of electricity three-phase successively; Rinse insulator chain time, the insulator chain of subpunch downwind side, the insulator chain of backlash weather side, for suspension insulator, from bottom to top rinses successively piecewise, during flushing from side of wire successively rinse;
The process of concrete flushing insulator comprises:
Successively rinse to middle part piece by piece by bottom the insulating part of insulator, then flyback is to bottom, after confirmation bottom irrigation is clean, more successively rinses piece by piece to top from bottom, confirm that top arc extinguishing completes and after rinsing well, more progressively flyback to bottom;
Or
Successively upwards rinse piece by piece by bottom the insulating part of insulator, flyback after upwards rinsing four or five, again successively upwards rinse piece by piece from bottom again after flyback to bottom, after increasing four or five more again flyback to bottom, circulation flushing like this, until whole insulator has been rinsed, confirm to rinse without the dirty rear stopping of sewage;
If what rinse is four insulators in parallel, then adopts two hydraulic giants alternately to rinse four insulator strings when rinsing simultaneously, first rinsing the insulator of weather side during flushing, the insulator of afterflush downwind side;
Steps d, judge whether the insulator after rinsing occurs sewage drippage, local starting the arc phenomenon, if so, then again rinses corresponding insulator, if not, terminate to rinse.
2. 500kV transmission line insulator live water flushing method according to claim 1, is characterized in that, the water resistance rate of setting water is greater than 100000 Ω .cm.
3. 500kV transmission line insulator live water flushing method according to claim 1, it is characterized in that, rinse in the process of insulator at described step c, the change of Real-Time Monitoring tower upwind and wind speed, according to the angle of the wind direction adjustment hydraulic giant of described monitoring, suspend flushing operation when wind speed exceedes setting value.
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| CN103121019B true CN103121019B (en) | 2015-10-21 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105562381A (en) * | 2014-10-14 | 2016-05-11 | 山西晋缘电力化学清洗中心有限公司 | Live washing method for suspension insulator string and washing device |
| CN105562382B (en) * | 2014-10-14 | 2018-09-18 | 山西晋缘电力化学清洗中心有限公司 | A kind of living water washing method of strain insulator string |
| CN104815814A (en) * | 2015-04-28 | 2015-08-05 | 山东鲁能智能技术有限公司 | Insulation protection system and method for charging water washing robot in transformer substation |
| CN104998856B (en) * | 2015-07-31 | 2018-12-28 | 中国能源建设集团广东火电工程有限公司 | A kind of electrified water flusher and method |
| CN110560413A (en) * | 2019-10-24 | 2019-12-13 | 山西晋缘电力化学清洗中心有限公司 | 35kV equipment external insulation charged water washing method and washing system used by same |
| CN112099554A (en) * | 2020-07-14 | 2020-12-18 | 国网安徽省电力有限公司检修分公司 | Control method and system for flushing insulator of high-voltage transmission line |
| CN112495894A (en) * | 2020-10-27 | 2021-03-16 | 国网福建省电力有限公司检修分公司 | Method for realizing anti-pollution flashover electrification control by using unmanned aerial vehicle platform |
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| US5119851A (en) * | 1988-08-26 | 1992-06-09 | Luigi Paris | Equipment to carry out maintenanace operations, particularly washing, on insulator chains of high voltage electric lines |
| JP2005081308A (en) * | 2003-09-10 | 2005-03-31 | Ebara Kogyo Senjo Kk | Washing device and washing method |
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Address after: 528000 No. 1 South Fenjiang Road, Chancheng District, Guangdong, Foshan Co-patentee after: Guangdong Weiheng Electric Power Technology Development Co., Ltd. Patentee after: FOSHAN POWER SUPPLY BUREAU OF GUANGDONG POWER GRID CORPORATION Co-patentee after: WuHan University Address before: 528000 No. 1 South Fenjiang Road, Chancheng District, Guangdong, Foshan Co-patentee before: Guangdong Weiheng Electric Power Technology Development Co., Ltd. Patentee before: Foshan Power Supply Bureau, Guangdong Power Grid Corporation Co-patentee before: WuHan University |
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Effective date of registration: 20191101 Address after: 528000 No. 1 South Fenjiang Road, Chancheng District, Guangdong, Foshan Co-patentee after: Guangdong Weiheng Power Transmission and Distribution Co., Ltd. Patentee after: FOSHAN POWER SUPPLY BUREAU OF GUANGDONG POWER GRID CORPORATION Co-patentee after: WuHan University Address before: 528000 No. 1 South Fenjiang Road, Chancheng District, Guangdong, Foshan Co-patentee before: Guangdong Weiheng Electric Power Technology Development Co., Ltd. Patentee before: FOSHAN POWER SUPPLY BUREAU OF GUANGDONG POWER GRID CORPORATION Co-patentee before: WuHan University |
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