CN202586236U - Power transmission line iron tower for preventing power transmission line windage yaw discharge - Google Patents
Power transmission line iron tower for preventing power transmission line windage yaw discharge Download PDFInfo
- Publication number
- CN202586236U CN202586236U CN 201220256166 CN201220256166U CN202586236U CN 202586236 U CN202586236 U CN 202586236U CN 201220256166 CN201220256166 CN 201220256166 CN 201220256166 U CN201220256166 U CN 201220256166U CN 202586236 U CN202586236 U CN 202586236U
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- transmission line
- windage yaw
- power transmission
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- iron tower
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Abstract
The present utility model provides a power transmission line iron tower for preventing power transmission line windage yaw discharge. The iron tower comprises an insulator chain with two independent hanging points, and a conducting wire is hung on the insulator chain. As the insulator chain with the two independent hanging points is provided, multi-direction wind influences under a strong convection meteorological condition can be balanced, the swinging angle of the conducting wire is reduced, the air gap with principle materials is enlarged and is larger than a discharge gap, windage yaw flashover accidents and windage yaw trip out of a power transmission line can be avoided, and stability of line operation can be guaranteed. The iron tower is cheap in reconstruction costs, simple in construction and short in construction period; main tower types which are prone to windage yaw discharge is fully considered; windage yaw discharge can be effectively prevented, and line grounding faults caused by windage yaw swinging can be eliminated radically.
Description
[technical field]
The utility model belongs to the technology of transmission of electricity field, especially a kind ofly prevents that transmission line windage yaw discharge from causing the iron tower of power transmission line structure of earth fault.
[background technology]
Transmission line is the visual plant in the electric power transfer engineering, and the windage yaw discharge of transmission line is to influence one of problem of line security operation always.When wind on lead; Component perpendicular to line direction will make lead produce the roll offset on horizontal line road; Rocking tendency depends on factors such as wind speed, insulator, lead deadweight, be rocked to certain angle after, the distance of lead and body of the tower reduces; Air gap during less than normal operation, air-gap disruptive discharge under power-frequency voltage.In recent years, under the meteorological condition of typhoon and squall line wind, 110kV-500kV transmission line windage yaw flashover fault frequently takes place, and the windage yaw tripping operation usually causes the unplanned stoppage in transit of circuit.From data statistics over the years; Drainage thread windage yaw discharge the line is busy the inclined to one side overwhelming majority who discharges of transportation work style mutually in phase conductor windage yaw discharge and " doing " font tower in the straight line cat head tower; Be respectively 27.3%, 63.5%, so provide to the countermeasure that prevents transmission line windage yaw discharge and the measure of these two kinds of shaft towers very important.If eliminate the generation of windage yaw flashover phenomenon through increasing the tower head size, this is a cost with obvious increase project cost.Traditional major measure that prevents the windage yaw discharge is: take to install additional the measure of weight.But actual conditions are: it is relatively poor to adopt the installation weight to improve straight line pole insulator string windage yaw effect, can not satisfy windproof the persisting in of transmission line and ask.
[summary of the invention]
The purpose of the utility model is to provide a kind of iron tower of power transmission line that effectively prevents windage yaw prevented transmission line windage yaw discharge discharge, that engineering cost is low.
For realizing the utility model purpose, following technical scheme is provided:
The utility model provides a kind of iron tower of power transmission line that prevents transmission line windage yaw discharge, and it comprises the insulator string of the insulator string formation with two independent hanging points, and lead is suspended on this insulator string.Through insulator string is set; And this insulator string has two independent hanging points, thereby the windage in many ways under the balance strong convection weather condition makes lead wave angle and reduces; And it is big that the air gap between the main material becomes; Greater than discharging gap, avoid transmission line windage yaw flashover fault and windage yaw tripping operation, guarantee the stability of circuit operation.
For the anti-windage yaw of phase conductor in the straight line cat head tower, this insulator string is " V " type insulator string that the insulator string by two independent hanging points constitutes, and forms stable English truss structure.
For phase drainage thread in " doing " font tower windproof partially for, this insulator string is the double insulator string that the insulator string by two independent hanging points constitutes.The mode that adopts double insulator to serially add the dress stay tube is carried out.This device also comprises wire jumper stay tube and lead wire jumper, and the wire jumper stay tube is connected with the iron tower cross-arm through the two common insulator that adopts independent hanging point with the lead wire jumper together.
For the outermost support angle bar of hookup wire road iron tower not of the JG type shaft tower in " doing " font tower, insulator string is installed directly.
Install insulator string additional after installing the cross-brace angle bar additional for the GJ type shaft tower in " doing " font tower.Simultaneously, strict control drainage thread length is used rope to measure the back and is made lead-in wire, prevents that regional area from forming excessive sag.
On the basis of technique scheme, the described sag that prevents that regional area from forming generally is not more than 0.3m.
On the basis of technique scheme, the spacing between the described double insulator string will be come suitable selection according to electric pressure.
On the basis of technique scheme, the suitable safe distance of described anti-windage yaw discharge measure considered keeps enough nargin.
On the basis of technique scheme, described anti-windage yaw discharge measure also should be carried out verification for the windage yaw discharge of span centre drift, and will carry out the cleaning of the trees felling and the architecture against regulations afterwards, thereby guarantees the windproof bias ability that circuit is whole.
The contrast prior art the utlity model has following advantage:
1. engineered low price;
2. construction is simple, and the duration is short;
3. several kinds of main shaft tower types that the windage yaw discharge takes place have easily been taken into full account;
4. measure increases safe distance largely, effectively prevents the windage yaw discharge, has fundamentally eliminated windage yaw and has waved the line-to-ground fault that causes.
[description of drawings]
Fig. 1 is the anti-windage yaw embodiment sketch map of phase conductor in the straight line cat head tower that is directed against of the utility model iron tower of power transmission line;
Fig. 2 is the windproof inclined to one side embodiment partial schematic diagram of phase drainage thread in " doing " font tower that is directed against of the utility model iron tower of power transmission line;
Fig. 3 is Fig. 2 A part enlarged drawing;
Fig. 4 is the another kind of execution mode of part shown in Figure 3.
[embodiment]
Below in conjunction with accompanying drawing the utility model is done further explain.
The utility model can prevent that the iron tower of power transmission line of transmission line windage yaw discharge from comprising the insulator string of the insulator string formation with two independent hanging points, and lead is suspended on this insulator string.The utility model generally is on the straight line cat head electric power pylon that transmission line windage yaw discharge takes place easily and " doing " font electric power pylon, to implement.Explain to two kinds of type towers below.
To straight line cat head tower: as shown in Figure 1, on straight line cat head tower 5, two string synthetic insulators 1 have constituted the hang of " V " type.Its operation principle is: form stable English truss structure, just be difficult to wave again, the part that can wave only limits to right angle link plate 2 to suspension clamp 4 places; This place's vertical range is very short; Even under violent typhoon, to 90 degree, the horizontal range that windage yaw is waved is merely the length of straight line link plate 2 to the windage yaw angle of oscillation greatly; Make air gap between the main material of lead 3 and straight line cat head tower 5 much larger than discharging gap, fundamentally eliminated windage yaw and waved the line-to-ground fault that causes.
To " doing " font tower: shown in Fig. 2-4, the local amplification in the top on " doing " font tower 6 explained.Wire jumper stay tube 8 is connected with iron tower cross-arm 10 through the two common insulator 7 that adopts independent hanging point with lead wire jumper 9 together.Keep certain distance between two common insulators 7.
As shown in Figure 3, for the JG type shaft tower outermost support angle bar 11 of hookup wire road iron tower not, angle bar is installed directly.As shown in Figure 4, install additional for GJ type shaft tower and to install two common insulator strings 7 behind the cross-brace angle bar 11 additional.
In addition, strict control drainage thread length is used rope to measure the back and is made lead-in wire, prevents that regional area from forming bigger sag.
Its operation principle is: the deadweight that two common insulator strings 7 have strengthened insulator on the one hand, make between the main material of lead wire jumper 9 and " doing " font tower 6 the air gap change greatly, greater than discharging gap.Wave if consider the not same period of double insulator string 7, the windage yaw angle of oscillation of lead-in wire will further reduce, and lead wire jumper 9 will further increase with the air gap of the main material of " doing " font tower 6, more can guarantee the stability of circuit operation.Reduce sag through control drainage thread length, also can increase the air gap of the main material of lead wire jumper 9 and " doing " font tower 6.
The above is merely the preferred embodiment of the utility model, and the protection range of the utility model is not limited thereto, and anyly all belongs within the utility model protection range based on the equivalent transformation on the utility model technical scheme.
Claims (7)
1. the iron tower of power transmission line that can prevent transmission line windage yaw discharge is characterized in that, it comprises the insulator string of the insulator string formation with two independent hanging points, and lead is suspended on this insulator string.
2. the iron tower of power transmission line that prevents transmission line windage yaw discharge as claimed in claim 1 is characterized in that this iron tower of power transmission line is the cat head tower, and this insulator string is " V " type insulator string that the insulator string by two independent hanging points constitutes.
3. the iron tower of power transmission line that prevents transmission line windage yaw discharge as claimed in claim 1 is characterized in that this iron tower of power transmission line is " doing " font tower, and this insulator string is the double insulator string that the insulator string by two independent hanging points constitutes.
4. the iron tower of power transmission line that prevents transmission line windage yaw discharge as claimed in claim 3 is characterized in that, insulator string is directly installed in the JG type shaft tower outside of being somebody's turn to do in " doing " font tower.
5. the iron tower of power transmission line that prevents transmission line windage yaw discharge as claimed in claim 3 is characterized in that, the GJ type shaft tower outermost of being somebody's turn to do in " doing " font tower is installed the support angle bar, and insulator string is installed then.
6. the iron tower of power transmission line that prevents transmission line windage yaw discharge as claimed in claim 3; It is characterized in that; It comprises wire jumper stay tube and lead wire jumper, and the wire jumper stay tube is connected with the iron tower cross-arm through the two common insulator that adopts independent hanging point with the lead wire jumper together.
7. the iron tower of power transmission line that prevents transmission line windage yaw discharge as claimed in claim 3 is characterized in that the sag that regional area forms is not more than 0.3m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220256166 CN202586236U (en) | 2012-06-01 | 2012-06-01 | Power transmission line iron tower for preventing power transmission line windage yaw discharge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220256166 CN202586236U (en) | 2012-06-01 | 2012-06-01 | Power transmission line iron tower for preventing power transmission line windage yaw discharge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202586236U true CN202586236U (en) | 2012-12-05 |
Family
ID=47255607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220256166 Expired - Lifetime CN202586236U (en) | 2012-06-01 | 2012-06-01 | Power transmission line iron tower for preventing power transmission line windage yaw discharge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202586236U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103606873A (en) * | 2013-10-31 | 2014-02-26 | 国家电网公司 | Sectioned combination-type wind-deflection-preventing composite insulating inhaul cable and installation method |
| CN105625792A (en) * | 2015-12-24 | 2016-06-01 | 广东迪生电力钢构器材有限公司 | Novel power transmission tower provided with falling-preventing structure |
| CN106555501A (en) * | 2016-09-26 | 2017-04-05 | 安徽华电工程咨询设计有限公司 | A kind of cat-head transmission tower suitable for single time overhead transmission line cable T joint |
| CN107154607A (en) * | 2017-06-22 | 2017-09-12 | 国网新疆电力公司电力科学研究院 | Transmission line of electricity drainage thread wind-proof device |
| CN107575081A (en) * | 2017-08-31 | 2018-01-12 | 国核电力规划设计研究院有限公司 | A kind of transposition tower and its interchanging method |
| CN111322972A (en) * | 2020-03-26 | 2020-06-23 | 郑州工程技术学院 | Sliding type cable sag measuring device |
| CN111519970A (en) * | 2020-04-28 | 2020-08-11 | 广东电网有限责任公司揭阳供电局 | 220kV transmission line single-loop iron tower |
-
2012
- 2012-06-01 CN CN 201220256166 patent/CN202586236U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103606873A (en) * | 2013-10-31 | 2014-02-26 | 国家电网公司 | Sectioned combination-type wind-deflection-preventing composite insulating inhaul cable and installation method |
| CN103606873B (en) * | 2013-10-31 | 2016-06-29 | 国家电网公司 | Assembled wind-deviation compound inslation drag-line and installation method |
| CN105625792A (en) * | 2015-12-24 | 2016-06-01 | 广东迪生电力钢构器材有限公司 | Novel power transmission tower provided with falling-preventing structure |
| CN106555501A (en) * | 2016-09-26 | 2017-04-05 | 安徽华电工程咨询设计有限公司 | A kind of cat-head transmission tower suitable for single time overhead transmission line cable T joint |
| CN107154607A (en) * | 2017-06-22 | 2017-09-12 | 国网新疆电力公司电力科学研究院 | Transmission line of electricity drainage thread wind-proof device |
| CN107575081A (en) * | 2017-08-31 | 2018-01-12 | 国核电力规划设计研究院有限公司 | A kind of transposition tower and its interchanging method |
| CN107575081B (en) * | 2017-08-31 | 2019-05-31 | 国核电力规划设计研究院有限公司 | A kind of transposition tower and its interchanging method |
| CN111322972A (en) * | 2020-03-26 | 2020-06-23 | 郑州工程技术学院 | Sliding type cable sag measuring device |
| CN111322972B (en) * | 2020-03-26 | 2021-08-31 | 山东森联智能装备有限公司 | Sliding type cable sag measuring device |
| CN111519970A (en) * | 2020-04-28 | 2020-08-11 | 广东电网有限责任公司揭阳供电局 | 220kV transmission line single-loop iron tower |
| CN111519970B (en) * | 2020-04-28 | 2022-01-25 | 广东电网有限责任公司揭阳供电局 | 220kV transmission line single-loop iron tower |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121205 |