JP2008251267A - Thunderbolt resistant aerial ground wire - Google Patents

Thunderbolt resistant aerial ground wire Download PDF

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JP2008251267A
JP2008251267A JP2007089039A JP2007089039A JP2008251267A JP 2008251267 A JP2008251267 A JP 2008251267A JP 2007089039 A JP2007089039 A JP 2007089039A JP 2007089039 A JP2007089039 A JP 2007089039A JP 2008251267 A JP2008251267 A JP 2008251267A
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lightning
wire
ground wire
overhead ground
resistant
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Sakae Taniguchi
栄 谷口
Narimitsu Okabe
成光 岡部
Koji Nagano
宏治 長野
Noriyuki Shimada
典幸 島田
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J Power Systems Corp
Tokyo Electric Power Company Holdings Inc
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Tokyo Electric Power Co Inc
J Power Systems Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a thunderbolt resistant aerial ground wire which has the equivalent form, weight, and loosening property as the standard earth wire, and which is superior in thunderbolt resistance. <P>SOLUTION: This is constituted of a twisted wire part 13 comprised by twisting seven pieces of wires 12 in which a steel wire 10 is the core wire and in which an aluminum covered part 11 is installed at its outer periphery, and the twisted wire part 16 of the outermost layer comprised by twisting twelve pieces of the wires 15 in which the steel wire 10 is the core wire, in which the aluminum covered part 11 is installed at its outer periphery, and furthermore in which a ceramics coat layer 14 is installed at a surface. By installing layer thickness of the ceramics coat layer 14 within a range of 10 to 50 μm, the thunderbolt resistance of a charge amount 200 C or more which is the supposed maximum value of a summertime thunderbolt having negative polarity is obtained. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、耐雷架空地線に関し、特に、標準架空地線と同等の外径および重量を有して耐雷性に優れる耐雷架空地線に関するものである。   The present invention relates to a lightning-resistant overhead ground wire, and more particularly to a lightning-resistant overhead ground wire having an outer diameter and weight equivalent to a standard overhead ground wire and excellent in lightning resistance.

従来、架空送電線への落雷を防止するものとして、架空送電線の本線の上方に架空地線を設けて落雷を架空地線に誘導し、架空送電線の本線への落雷を防ぐことが行われている。架空地線では、落雷によるエネルギーによって断線することのない耐雷性および信頼性と、雷撃電流を速やかに接地部に逃がす導電性が求められる。   Conventionally, as a means of preventing lightning strikes to overhead power transmission lines, an overhead ground line has been provided above the overhead power line to induce lightning strikes to the overhead ground line, thereby preventing lightning strikes to the main power line of the overhead power transmission line. It has been broken. The overhead ground wire is required to have lightning resistance and reliability that do not break due to lightning strike energy, and conductivity that allows the lightning current to escape to the grounding part quickly.

このような架空地線として、ロープ状の芯線をアルミニウムで被覆した複数の素線を撚り合わせてなる補強線材を中央に配し、その周囲に犠牲層として機能する亜鉛層を表面に設けたアルミ覆鋼線からなる複数の素線を撚り合わせたものがある（例えば、特許文献１参照。）。   As such an aerial ground wire, an aluminum wire in which a reinforcing wire made by twisting a plurality of strands covered with a rope-shaped core wire with aluminum is arranged in the center, and a zinc layer functioning as a sacrificial layer around it is provided on the surface. There exists what twisted the some strand which consists of a covered steel wire (for example, refer patent document 1).

また、雷撃時に雷エネルギーから素線を保護するようにした他の架空地線として、複数本の素線からなる撚線の内部空間あるいは外周に亜鉛粉末を含有した導電性グリースを有するものがある（例えば、特許文献２参照。）。   Other overhead ground wires that protect the strands from lightning energy during lightning strikes have conductive grease containing zinc powder in the inner space or outer periphery of a stranded wire composed of a plurality of strands. (For example, refer to Patent Document 2).

特許文献１および２に記載される架空地線によれば、複合撚線を構成するアルミニウムが雷エネルギーによる熱で損傷する前に、より低融点で潜熱の大なる亜鉛の相変態に基づいて雷エネルギーによる熱を吸収することで素線切れを防止するものであるが、依然として落雷アークの熱によって素線が溶断することがある。   According to the aerial ground wires described in Patent Documents 1 and 2, lightning based on the phase transformation of zinc having a lower melting point and a greater latent heat before the aluminum constituting the composite stranded wire is damaged by heat due to lightning energy. Absorption of heat due to energy prevents strand breakage, but the strand may still be melted by the heat of the lightning arc.

このような落雷アークによる素線の溶断を防ぐ他の架空地線として、高強度鋼線の外周をモリブデンもしくはタングステン、ニオブ、モリブデン合金、タングステン合金、もしくはニオブ合金等の高融点金属で被覆し、その外周にアルミニウムを被覆して最表層に亜鉛層を設けた素線が最外層となるように撚り合わせたものがある（例えば、特許文献３参照。）。   As another aerial ground wire to prevent the strands from fusing by such a lightning arc, the outer periphery of the high-strength steel wire is coated with a high melting point metal such as molybdenum or tungsten, niobium, molybdenum alloy, tungsten alloy, or niobium alloy, There is one in which the outer circumference is twisted so that a strand in which aluminum is coated and a zinc layer is provided on the outermost layer becomes the outermost layer (see, for example, Patent Document 3).

特許文献３に記載される架空地線によれば、亜鉛層およびアルミニウム被覆を損傷するような落雷であっても、高強度鋼線がタングステン等の高融点金属で被覆されているので耐熱性に優れ、断線を生じにくい反面、高融点金属が高価であることから製造コストが大になるという問題がある。   According to the overhead ground wire described in Patent Document 3, even if it is a lightning strike that damages the zinc layer and the aluminum coating, the high-strength steel wire is coated with a refractory metal such as tungsten so that it is heat resistant. Although it is excellent and hardly breaks, there is a problem that the manufacturing cost increases because the high melting point metal is expensive.

また、線材の耐熱性を高めるものとして、ベース塗料にセラミックコーティング剤を混合して線材表面に塗布し、これを線材表面に焼付けて耐熱絶縁皮膜を設けた絶縁電線がある（例えば、特許文献４参照。）。
特開平７−２９６６４２号公報 特開２００４−１２７９０６号公報 特開平７−１９２５３４号公報 特開２０００−３３６３０７号公報 Further, as an example of improving the heat resistance of a wire, there is an insulated wire in which a ceramic coating agent is mixed with a base paint and applied to the surface of the wire, and this is baked on the surface of the wire to provide a heat-resistant insulating film (for example, Patent Document 4 reference.).
JP-A-7-296642 JP 2004-127906 A JP-A-7-192534 JP 2000-336307 A

しかし、特許文献４に記載された耐熱性の皮膜を架空地線に設ける場合、要求される耐熱性に応じた厚さの皮膜を設ける必要がある。素線表面に所定厚さの皮膜を設けることで架空地線の形状および重量が標準架空地線と異なると弛度特性が変化するため、鉄塔等の設備の改変、補強等の作業が必要となるとともに送電線路の管理コストを上昇させるという問題がある。   However, when the heat-resistant film described in Patent Document 4 is provided on the overhead ground wire, it is necessary to provide a film having a thickness corresponding to the required heat resistance. By providing a coating with a certain thickness on the surface of the strand, the looseness characteristics will change if the shape and weight of the overhead ground wire differ from the standard overhead ground wire, so work such as modification and reinforcement of equipment such as steel towers is required In addition, there is a problem of increasing the management cost of the transmission line.

従って、本発明の目的は、標準架空地線と同等の形状、重量、および弛度特性を有し、耐雷性に優れる耐雷架空地線を提供することにある。   Accordingly, an object of the present invention is to provide a lightning-resistant overhead ground wire that has the same shape, weight, and sag characteristics as those of a standard overhead ground wire and is excellent in lightning resistance.

本発明は上記目的を達成するため、導電性を有するセラミックスコート層を表面に有した素線によって形成される撚線部を最外層に有する耐雷架空地線を提供する。   In order to achieve the above object, the present invention provides a lightning-resistant overhead ground wire having a stranded portion formed by a strand having a conductive ceramic coat layer on the outermost layer.

本発明によれば、標準架空地線と同等の形状、重量、および弛度特性を有し、優れた耐雷性を付与することができる。   According to the present invention, it has the same shape, weight, and sag characteristics as a standard overhead ground wire, and can impart excellent lightning resistance.

図１は、本発明の実施の形態に係る耐雷架空地線を示す横断面図である。   FIG. 1 is a cross-sectional view showing a lightning proof overhead ground wire according to an embodiment of the present invention.

この耐雷架空地線１は、鋼線１０を芯線としてその外周にアルミニウム被覆部１１を設けた素線１２を７本撚り合わせてなる撚線部１３と、鋼線１０を芯線としてその外周にアルミニウム被覆部１１を設け、さらに表面にセラミックスコート層１４を設けた素線１５を１２本撚り合わせてなる最外層の撚線部１６によって構成されている。   This lightning-resistant overhead ground wire 1 has a steel wire 10 as a core wire and a twisted wire portion 13 formed by twisting seven strands 12 provided with an aluminum covering portion 11 on its outer periphery, and a steel wire 10 as a core wire and aluminum on its outer periphery. The outermost layer stranded portion 16 is formed by twisting 12 strands 15 provided with a covering portion 11 and further provided with a ceramic coat layer 14 on the surface.

素線１２は、鋼線１０の外層に連続押し出しによって形成されたアルミニウム被覆部１１を有する。なお、アルミニウム被覆部１１については、アルミパイプ嵌合法等の他の方法で形成することも可能である。   The strand 12 has the aluminum coating | coated part 11 formed in the outer layer of the steel wire 10 by continuous extrusion. In addition, about the aluminum coating | coated part 11, it is also possible to form by other methods, such as an aluminum pipe fitting method.

素線１５は、素線１２の表面にセラミックス系塗料を塗布し、焼付けを行うことによって形成されたセラミックスコート層１４を有する。セラミックス系塗料は、シリカ、酸化ケイ素等のＳｉＯ２を主としたセラミックスコート剤にＡｌ２Ｏ３（アルミナ）、ＴｉＯ２（酸化チタン）、ＺｒＯ２（ジルコニア）等のセラミックス粉末を添加したものであり、導電性を付与するためにＮｉの粉末を添加している。セラミックス系塗料に導電性を付与する他の金属粉末として、例えば、Ｚｎを添加することも可能である。また、複数の金属粉末を混合して添加してもよい。 The strand 15 has a ceramic coat layer 14 formed by applying a ceramic coating on the surface of the strand 12 and baking it. Ceramic-based paints, silica, Al 2 O 3 in the main with the ceramic coating agent of SiO 2 such as silicon oxide (alumina), TiO 2 (titanium oxide), which was supplemented with ceramic powder such as ZrO 2 (zirconia) Yes, Ni powder is added to provide conductivity. As another metal powder that imparts conductivity to the ceramic paint, for example, Zn can be added. A plurality of metal powders may be mixed and added.

なお、本実施の形態は耐雷架空地線について説明したが、種々のアルミニウム被覆鋼線（ＡＣ）撚線および光ファイバ複合架空地線（ＯＰＧＷ）への適用が可能である。ＡＣ撚線では、５５ｍｍ２撚線、７０ｍｍ２撚線、１５０ｍｍ２撚線、２６０ｍｍ２撚線等があり、ＯＰＧＷでは、５５ｍｍ２撚線、６０ｍｍ２撚線、６５ｍｍ２撚線、７０ｍｍ２撚線、９０ｍｍ２撚線、１２０ｍｍ２撚線、１７０ｍｍ２撚線、２５０ｍｍ２撚線、５００ｍｍ２撚線等へ適用可能である。 In addition, although this Embodiment demonstrated the lightning protection overhead ground wire, it is applicable to various aluminum covering steel wire (AC) twisted wire and an optical fiber composite overhead ground wire (OPGW). In AC stranded wire, there are 55mm 2 stranded wire, 70mm 2 stranded wire, 150mm 2 stranded wire, 260mm 2 stranded wire, etc. In OPGW, 55mm 2 stranded wire, 60mm 2 stranded wire, 65mm 2 stranded wire, 70mm 2 stranded wire is applicable 90 mm 2 stranded wire, 120 mm 2 stranded wire, 170 mm 2 stranded wire, 250 mm 2 stranded wire, to 500 mm 2 stranded wire or the like.

以下に、耐雷架空地線１の実施例について説明する。   Below, the Example of the lightning-resistant overhead ground wire 1 is described.

（実施例１）
図１に示すように、芯線である鋼線１０の外周にアルミニウム被覆部１１を設けることによって外径が３．２ｍｍの素線１２を形成し、この素線１２を７本撚り合わせて撚線部１３を形成した。また、芯線である鋼線１０の外周にアルミニウム被覆部１１を設け、アルミニウム被覆部１１の外周に厚さ５０μｍのセラミックスコート層１４を設けることによって外径ｄが外径３．３ｍｍの素線１５を形成し、この素線１５を撚線部１３の外周に１２本撚り合わせて最外層の撚線部１６を形成することにより耐雷架空地線１を形成した。このようにして形成された耐雷架空地線１は、標準架空地線であるＡＣ１５０ｍｍ２撚線と同等の外径を有している。 Example 1
As shown in FIG. 1, a strand 12 having an outer diameter of 3.2 mm is formed by providing an aluminum coating 11 on the outer periphery of a steel wire 10 that is a core wire, and seven strands 12 of this strand 12 are twisted together. Part 13 was formed. Further, by providing an aluminum covering portion 11 on the outer periphery of the steel wire 10 which is a core wire, and providing a ceramic coating layer 14 having a thickness of 50 μm on the outer periphery of the aluminum covering portion 11, a strand 15 having an outer diameter d of 3.3 mm. Then, 12 strands 15 of the strands 15 are twisted around the outer periphery of the stranded portion 13 to form the outermost stranded portion 16, thereby forming the lightning-resistant overhead ground wire 1. The lightning-resistant overhead ground wire 1 formed in this way has an outer diameter equivalent to an AC 150 mm 2 stranded wire that is a standard overhead ground wire.

セラミックスコート層１４は、セラミックス粉末としてシリカを含むセラミックスコート剤と、導電性を付与するためのＮｉ１８重量％とＺｎ２重量％の混合粉末２０重量％を含むセラミックス系塗料をアルミニウム被覆部１１の表面に塗布し、乾燥後に焼付炉で焼付けることによって形成している。   The ceramic coat layer 14 has a ceramic coating agent containing silica as a ceramic powder and a ceramic paint containing 20 wt% of a mixed powder of Ni 18 wt% and Zn 2 wt% for imparting conductivity on the surface of the aluminum coating 11. It is formed by applying and baking in a baking furnace after drying.

本実施例で形成された耐雷架空地線１の構成および特性について、標準架空地線であるＡＣ１５０ｍｍ２撚線（表１においては「標準ＡＣ１５０」）とともに表１に示す。

Figure 2008251267
The configuration and characteristics of the lightning-resistant overhead ground wire 1 formed in this example are shown in Table 1 together with an AC 150 mm 2 stranded wire (“Standard AC 150” in Table 1) that is a standard overhead ground wire.
Figure 2008251267

表１に示すように、本実施例で形成した耐雷架空地線１の外径は１６．２ｍｍであり、標準ＡＣ１５０の外径１６．０ｍｍと同等であることから、標準架空地線で用いられる圧縮クランプ、直線スリーブ、ダンパー等の付属品の適用が可能である。   As shown in Table 1, since the outer diameter of the lightning-resistant overhead ground wire 1 formed in this embodiment is 16.2 mm, which is equivalent to the outer diameter 16.0 mm of the standard AC150, it is used in the standard overhead ground wire. Accessories such as compression clamps, linear sleeves and dampers can be applied.

図２は、本実施例における耐雷架空地線と標準ＡＣ１５０の径間長における弛度特性図である。   FIG. 2 is a sag characteristic diagram of the span length between the lightning-resistant overhead ground wire and the standard AC 150 in the present embodiment.

本実施例の耐雷架空地線１の重量は７２７．７ｋｇと、標準ＡＣ１５０の７１８．８ｋｇと同等の重量を有することから、弛度特性についても標準ＡＣ１５０と同等の傾向を示す。このため、耐雷架空地線１の布設にあたって鉄塔等の設備の改変、補強等の作業を要しない。   Since the weight of the lightning proof overhead ground wire 1 of this embodiment is 727.7 kg, which is equivalent to 718.8 kg of the standard AC150, the sag characteristics also show the same tendency as the standard AC150. For this reason, when laying the lightning-resistant overhead ground wire 1, work such as modification and reinforcement of facilities such as a steel tower is not required.

図３は、本実施例における耐雷架空地線のアーク試験結果を示す図である。   FIG. 3 is a diagram showing an arc test result of a lightning-resistant overhead ground wire in the present example.

アーク試験では、耐雷架空地線１の適用路線で多発している負極性夏季雷を想定し、対向電極を負極として時間（ｍｓ）／雷撃電流（ｋＡ）≒１の条件で行った。これは、夏季雷をもたらす雷雲の９０％が負極となることによる。同図においてグラフの横軸に設けられる溶融エネルギー計算値は、素線を完全に溶解させるのに必要なエネルギーを示している。   The arc test was performed under the condition of time (ms) / lightning current (kA) ≈1 with the negative electrode as the negative electrode assuming a negative summer lightning that frequently occurs on the lightning overhead ground wire 1 application line. This is because 90% of thunderclouds that cause summer thunder are negative. In the figure, the calculated melting energy value on the horizontal axis of the graph indicates the energy required to completely dissolve the strands.

本実施例の耐雷架空地線１では、表面にセラミックスコート層１４を有する素線１５を撚線部１６の最外層に設けることによって、溶融エネルギー特性が５００Ｊ／ｃｍ以上に向上しており、それに伴って耐雷性が向上していることがわかる。本実施例における耐雷架空地線１で、落雷による素線破断が生じない最大電荷量（耐雷性）は約３００Ｃである。負極性夏季雷の想定最大電荷量は約２００Ｃであることから、耐雷架空地線１は落雷によって素線破断を生じることのない耐雷性を有している。標準ＡＣ１５０の最外層の溶融エネルギー特性は約３６０Ｊ／ｃｍで、耐雷性は約１８５Ｃであることから、１１５Ｃの耐雷性向上が得られた。   In the lightning proof overhead ground wire 1 of the present embodiment, the melt energy characteristic is improved to 500 J / cm or more by providing the strand 15 having the ceramic coat layer 14 on the surface in the outermost layer of the stranded portion 16. Along with this, it can be seen that the lightning resistance is improved. In the lightning-resistant overhead ground wire 1 in the present embodiment, the maximum charge amount (lightning resistance) that does not cause the strand breakage due to lightning strike is about 300C. Since the assumed maximum charge amount of the negative summer lightning is about 200 C, the lightning-resistant overhead ground wire 1 has lightning resistance that does not cause strand breakage due to lightning. Since the melt energy characteristic of the outermost layer of standard AC150 is about 360 J / cm and the lightning resistance is about 185 C, an improvement in lightning resistance of 115 C was obtained.

次に、耐雷架空地線１についての基本性能試験を行った。基本性能試験は、一般試験として、本実施例で形成した耐雷ＡＣ１５０素線である素線１５に対して、導電率、ねじり試験、素線設計厚さ、巻付け・巻き戻し試験の４試験を行った。また、参考試験として、素線１５を１２本撚り合わせた耐雷ＡＣ１５０撚線である撚線部１６に対して、耐熱試験、耐候性試験、腐食試験の３試験を行った。基本性能試験の結果を表２に示す。なお、表２において、素線１５を実施例（素線）、撚線部１６を実施例（撚線）としている。

Figure 2008251267
Next, the basic performance test about the lightning-resistant overhead ground wire 1 was conducted. In the basic performance test, four tests of conductivity, torsion test, strand design thickness, and winding / rewinding test are performed on the strand 15 which is the lightning-resistant AC150 strand formed in this embodiment as a general test. went. In addition, as a reference test, three tests including a heat resistance test, a weather resistance test, and a corrosion test were performed on the stranded wire portion 16 that is a lightning-resistant AC150 stranded wire obtained by twisting 12 strands 15. Table 2 shows the results of the basic performance test. In Table 2, the strand 15 is an example (strand), and the stranded portion 16 is an embodiment (stranded).
Figure 2008251267

導電率については、素線１５の表面抵抗を測定し、雷撃電流を通過させるうえで十分な導電率を有することを確認した。   As for the conductivity, the surface resistance of the wire 15 was measured, and it was confirmed that it had sufficient conductivity to pass the lightning current.

ねじり試験については、素線１５が規格値以上のねじりで破断することを確認した。ねじり破断後もセラミックスコート層１４の付着性は大で、剥離は確認されなかった。   As for the torsion test, it was confirmed that the strand 15 was broken by a torsion exceeding the standard value. Even after torsional fracture, the adhesion of the ceramic coat layer 14 was large, and no peeling was confirmed.

素線設計厚さについては、素線１５のセラミックスコート層厚さが規格値以上であることを確認した。   Regarding the strand design thickness, it was confirmed that the ceramic coat layer thickness of the strand 15 was equal to or greater than the standard value.

巻付け・巻き戻し試験について、巻付け特性は、素線１５を標準径の５倍の円筒棒に８回巻付けした結果、外観に剥離等の異常がないことを確認した。また、巻付け・巻き戻し特性については、素線１５を自己径の円筒棒に８回巻付けした後、巻き戻しを行った結果、切断しないことを確認した。   Regarding the winding / rewinding test, it was confirmed that the winding characteristics were such that there was no abnormality such as peeling in the appearance as a result of winding the wire 15 around a cylindrical rod 5 times the standard diameter eight times. As for the winding / rewinding characteristics, it was confirmed that the wire 15 was not cut as a result of winding the wire 15 around the self-diameter cylindrical rod 8 times and then performing the rewinding.

耐熱試験については、撚線部１６に通電して４００℃まで温度上昇させた後に冷却した。セラミックスコート層１４に異常がないことを確認した。   About the heat test, it cooled, after supplying with electricity to the twisted wire part 16 and raising temperature to 400 degreeC. It was confirmed that there was no abnormality in the ceramic coat layer 14.

耐候性試験については、サンシャインウエザ試験後、撚線部１６の撚り戻し素線を用いて巻付け試験を行った。耐候性の低下は見られなかった。   About the weather resistance test, the winding test was done after the sunshine weather test using the untwisted strand of the stranded portion 16. No decrease in weather resistance was observed.

腐食試験については、ＪＩＳ−Ｚ２３７１に従い、撚線部１６に１５分間の塩水を噴霧後、１時間４５分の乾燥を２００回繰り返す塩水噴霧試験を行った。試験後の撚線部１６にセラミックスコート層１４の損傷、剥離が生じていないことを確認した。   About the corrosion test, in accordance with JIS-Z2371, the salt water spray test which repeats drying for 1 hour and 45 minutes 200 times after spraying the salt water for 15 minutes to the twisted wire part 16 was done. It was confirmed that no damage or peeling of the ceramic coating layer 14 occurred in the stranded portion 16 after the test.

上記したように本実施例の耐雷架空地線１によると、標準架空地線と同等の外径および重量を有することから、弛度特性についても標準架空地線と同等の特性を有し、布設に伴う作業性を損なうことなく良好な耐雷性が得られる。   As described above, according to the lightning-resistant overhead ground wire 1 of the present embodiment, it has the same outer diameter and weight as the standard overhead ground wire. Good lightning resistance can be obtained without impairing the workability associated with.

本発明者によれば、素線１５の表面に設けられるセラミックスコート層１４の厚さについて検討を行った結果、その層厚を１０〜５０μｍの範囲で設けることによって、負極性夏季雷の想定最大値である電荷量２００Ｃ以上の耐雷性が得られることを確認している。また、セラミックスコート層１４に導電性を付与するために添加する金属粉末についても、１０〜５０重量％の範囲で添加することによって、セラミックスコート層１４の強度を低下させることなく架空地線としての良好な導電性が得られることを確認している。   According to the present inventor, as a result of studying the thickness of the ceramic coat layer 14 provided on the surface of the strand 15, by providing the layer thickness in the range of 10 to 50 μm, the assumed maximum of negative summer thunder It has been confirmed that lightning resistance of 200C or more as a value can be obtained. Further, the metal powder added to impart conductivity to the ceramic coat layer 14 is also added in the range of 10 to 50% by weight as an aerial ground wire without reducing the strength of the ceramic coat layer 14. It has been confirmed that good conductivity can be obtained.

図１は、本発明の実施の形態に係る耐雷架空地線を示す横断面図である。FIG. 1 is a cross-sectional view showing a lightning proof overhead ground wire according to an embodiment of the present invention. 図２は、本実施例における耐雷架空地線と標準ＡＣ１５０の径間長における弛度特性図である。FIG. 2 is a sag characteristic diagram of the span length between the lightning-resistant overhead ground wire and the standard AC150 in this embodiment. 図３は、本実施例における耐雷架空地線のアーク試験結果を示す図である。FIG. 3 is a diagram showing an arc test result of a lightning-resistant overhead ground wire in the present example.

符号の説明Explanation of symbols

１…耐雷架空地線、１０…鋼線、１１…アルミニウム被覆部、１２…素線、１３…撚線部、１４…セラミックスコート層、１５…素線、１６…撚線部 DESCRIPTION OF SYMBOLS 1 ... Lightning-resistant overhead ground wire, 10 ... Steel wire, 11 ... Aluminum coating part, 12 ... Elementary wire, 13 ... Stranded wire part, 14 ... Ceramic coating layer, 15 ... Elementary wire, 16 ... Stranded wire part

Claims (6)

導電性を有するセラミックスコート層を表面に有した素線によって形成される撚線部を最外層に有することを特徴とする耐雷架空地線。   A lightning-resistant overhead ground wire having a twisted wire portion formed by a strand having a conductive ceramic coating layer on the outermost layer. 前記素線は、標準架空地線と同等の外径および重量を有することを特徴とする請求項１に記載の耐雷架空地線。   The lightning-resistant overhead ground wire according to claim 1, wherein the strand has an outer diameter and a weight equivalent to those of a standard overhead ground wire. 前記素線は、標準架空地線と同等の弛度を有することを特徴とする請求項１に記載の耐雷架空地線。   The lightning-resistant overhead ground wire according to claim 1, wherein the strand has a sag degree equivalent to that of a standard overhead ground wire. 前記セラミックスコート層は、ＳｉＯ２を主としたセラミックスコート剤にアルミナ、酸化チタン、ジルコニア等のセラミックスの少なくとも１つを含むセラミックス系塗料の焼付け塗装層であることを特徴とする請求項１に記載の耐雷架空地線。 The ceramic coating layer, according to claim 1, characterized in that the ceramic coating agent mainly containing SiO 2 alumina, baking finish layer of titanium oxide, ceramics-based paint containing at least one of ceramics such as zirconia Lightning-resistant overhead ground wire. 前記セラミックスコート層は、亜鉛、ニッケル等の金属粉末を含むことを特徴とする請求項１または５に記載の耐雷架空地線。   The lightning-resistant overhead ground wire according to claim 1 or 5, wherein the ceramic coat layer contains metal powder such as zinc and nickel. 前記金属粉末は、その添加量が１０〜５０重量％で添加されていることを特徴とする請求項５に記載の耐雷架空地線。   The lightning-resistant overhead ground wire according to claim 5, wherein the metal powder is added in an amount of 10 to 50% by weight.
JP2007089039A 2007-03-29 2007-03-29 Thunderbolt resistant aerial ground wire Pending JP2008251267A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010015946A (en) * 2008-07-07 2010-01-21 Tokyo Electric Power Co Inc:The Thunder resistant aerial ground wire
WO2010126421A1 (en) * 2009-04-27 2010-11-04 Fredrik Dahl Device for grounding
CN103985475A (en) * 2014-05-09 2014-08-13 广西南宁百兰斯科技开发有限公司 Lightning-protection optical power cable
JP2015191788A (en) * 2014-03-28 2015-11-02 株式会社ジェイ・パワーシステムズ Optical fiber composite overhead earth wire
US9590408B2 (en) 2009-04-27 2017-03-07 Fredrik Dahl Device for grounding

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010015946A (en) * 2008-07-07 2010-01-21 Tokyo Electric Power Co Inc:The Thunder resistant aerial ground wire
WO2010126421A1 (en) * 2009-04-27 2010-11-04 Fredrik Dahl Device for grounding
US8878057B2 (en) 2009-04-27 2014-11-04 Fredrik Dahl Device for grounding
US9590408B2 (en) 2009-04-27 2017-03-07 Fredrik Dahl Device for grounding
EA027309B1 (en) * 2009-04-27 2017-07-31 Электрикэл Энвайронмент 4Ол Глобал Инвест Аб Device for grounding
JP2015191788A (en) * 2014-03-28 2015-11-02 株式会社ジェイ・パワーシステムズ Optical fiber composite overhead earth wire
CN103985475A (en) * 2014-05-09 2014-08-13 广西南宁百兰斯科技开发有限公司 Lightning-protection optical power cable

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