JPH11120833A - Neutral wire composite cable for direct current power - Google Patents
Neutral wire composite cable for direct current powerInfo
- Publication number
- JPH11120833A JPH11120833A JP27753797A JP27753797A JPH11120833A JP H11120833 A JPH11120833 A JP H11120833A JP 27753797 A JP27753797 A JP 27753797A JP 27753797 A JP27753797 A JP 27753797A JP H11120833 A JPH11120833 A JP H11120833A
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- Japan
- Prior art keywords
- power cable
- main
- neutral
- conductor
- neutral wire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、水中ケーブル（海
底ケーブル）に用いるのに好適な中性線を直流送電用ケ
ーブルに一体にした中性線複合直流電力用ケーブルに関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a neutral composite DC power cable in which a neutral conductor suitable for use in an underwater cable (submarine cable) is integrated with a DC power transmission cable.
【０００２】[0002]
【従来の技術】一般に、直流送電において、図３〜図５
に示すように、高圧の交流電圧（ＡＣ）を交／直変換装
置ａで直流変換し、その直流高電圧を１または複数の直
流電力ケーブルｂにより直流（ＤＣ）送電する。そし
て、送電された直流高電圧を直／交変換装置ｃにより交
流電圧に変換して、交流送電する。2. Description of the Related Art Generally, in DC power transmission, FIGS.
As shown in (1), a high-voltage AC voltage (AC) is DC-converted by an AC / DC converter a, and the DC high voltage is transmitted by direct-current (DC) through one or more DC power cables b. Then, the transmitted DC high voltage is converted into an AC voltage by the DC / AC converter c, and the AC power is transmitted.
【０００３】従来の上記の直流電力ケーブルｂの運用法
のひとつの単極運転法には、図３に示す大地帰路があ
る。これは、１条の直流電力ケーブルｂを用いてその電
力ケーブルｂ両端を大地（海水）に接地し、海水を帰路
回路ｄとして送電するものである。また、図４に示すよ
うに、帰路回路に帰線（中性線）ｅを使用した帰線帰路
がある。上記のように、単極送電における帰路回路ｄと
しては、海水に流すか帰線ｅを用いるかしている。One of the conventional methods of operating the DC power cable b is a single-pole operation method, which includes a ground return as shown in FIG. In this method, a single DC power cable b is used to ground both ends of the power cable b to the ground (seawater), and the seawater is transmitted as a return circuit d. As shown in FIG. 4, the return circuit includes a return line using a return line (neutral line) e. As described above, as the return circuit d in the unipolar power transmission, the flow is performed by flowing into seawater or the return line e is used.
【０００４】また、他の運用法としては、図５に示すよ
うに、正・負（＋／−）の各極について交／直変換装置
ａ１、ａ２、直流電力ケーブルｂ１、ｂ２、直／交変換
装置ｃ１、ｃ２を設ける双極運転法がある。この双極運
転法においては、帰線ｅによっても高圧直流送電してい
るが、通常、正・負のバランスを取るために接地点間を
結ぶ中性線ｆを設けている。As another operation method, as shown in FIG. 5, AC / DC converters a1 and a2, DC power cables b1 and b2, DC / DC converters for positive / negative (+/-) poles. There is a bipolar operation method in which the converters c1 and c2 are provided. In this bipolar operation method, high-voltage DC transmission is also performed by the return line e. However, a neutral line f connecting between ground points is usually provided to maintain a positive / negative balance.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、従来単
極運転法では、大地帰路がよく用いられたが、大地電位
の変動など周囲に何らかの悪影響を及ぼす危険性があ
り、帰線（中性線）を帰路に用いる場合が多くなってき
ている。また、双極運転法はどちらかの高圧ケーブルに
異常が生じた場合中性線を帰線回路とするため、中性線
が必要である。したがって、単極運転法の場合には最低
２条（電力ケーブル、帰線）、双極の場合には３条（電
力ケーブル２条、中性線）の布設が必要であり、布設工
期およびコストが高いものになる。また、直流電力ケー
ブルに流れる直流電流による磁界で布設場所の近くで
は、航行している船舶などにコンパスエラーが生じる恐
れもある。However, in the conventional unipolar driving method, the return to ground is often used. However, there is a risk that the surroundings may be adversely affected due to a change in the ground potential, and the return (neutral line). Is often used on the way back. In addition, in the bipolar operation method, a neutral line is necessary because a neutral line is used as a return circuit when an abnormality occurs in one of the high-voltage cables. Therefore, in the case of the unipolar operation method, it is necessary to lay at least two (power cable, return wire), and in the case of bipolar, three (two power cables, neutral wire) laying is required. Will be expensive. In addition, there is a possibility that a compass error may occur in a navigating ship or the like near the installation site due to a magnetic field due to a DC current flowing in the DC power cable.
【０００６】本発明は、前記従来の問題点を解消するべ
くなされたものであって、電力ケーブルの布設工期短縮
およびコスト削減ができ、ケーブルから外部へ磁界が漏
れることを確実に防止できる中性線複合直流電力用ケー
ブルを提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and can reduce the time required for laying a power cable, reduce costs, and can reliably prevent a magnetic field from leaking from a cable to the outside. It is an object of the present invention to provide a line composite DC power cable.
【０００７】[0007]
【課題を解決するための手段】本発明は、上記の目的を
達成するため、次の構成を有する。請求項１の発明は、
直流送電に用いる直流電力用ケーブルにおいて、主直流
電力ケーブル部は、中心の主導体の外周に主絶縁層およ
び金属シース層を有し、中性線部は導体外周に絶縁層を
有するものであって、主直流電力ケーブル部の外周に接
して中性線部を複数配設しかつ一体的に固定したことを
特徴とする中性線複合直流電力用ケーブルである。請求
項２の発明は、主電力ケーブル主絶縁層は耐直流送電電
圧用の絶縁材料からなり、中性線部絶縁層は主直流電力
ケーブル部との絶縁が確保される絶縁材料からなること
を特徴とする請求項１に記載の中性線複合直流電力用ケ
ーブルである。請求項３の発明は、中性線部導体の総断
面積は主導体の断面積の５０〜１００％であることを特
徴とする請求項１または２に記載の中性線複合直流電力
用ケーブルである。なお、中性線部は、主電力ケーブル
の外周をほぼ全周に亙って覆うように配設することが好
ましい。The present invention has the following configuration to achieve the above object. The invention of claim 1 is
In a DC power cable used for DC power transmission, a main DC power cable portion has a main insulating layer and a metal sheath layer on the outer periphery of a central main conductor, and a neutral wire portion has an insulating layer on the outer periphery of the conductor. And a plurality of neutral wires in contact with the outer periphery of the main DC power cable and fixed integrally therewith. According to a second aspect of the present invention, the main power cable main insulating layer is made of an insulating material for DC transmission voltage resistance, and the neutral wire part insulating layer is made of an insulating material that ensures insulation from the main DC power cable part. The neutral composite DC power cable according to claim 1, wherein: The invention according to claim 3 is characterized in that the total cross-sectional area of the neutral conductor is 50 to 100% of the cross-sectional area of the main conductor. It is. It is preferable that the neutral conductor is disposed so as to cover substantially the entire periphery of the main power cable.
【０００８】上記の本発明によれば、主電力ケーブル部
の金属シース層の外周に中性線部を複数配設しかつ一体
的に固定したので、主電力ケーブル部と中性線部が一体
的になる。したがって、電力ケーブル布設に際して、従
来別途に布設していた主電力ケーブルと中性線を一つの
電力ケーブルとして一括に布設できる。また、中性線部
を帰路回路として用いた場合に、主導体に流れる直流電
流による発生磁界が中性線部導体の電流による磁界でキ
ャンセルできるので、主導体の電流磁界が外部に漏れる
のを防止できる。According to the present invention, a plurality of neutral wires are provided around the outer periphery of the metal sheath layer of the main power cable and fixed integrally, so that the main power cable and the neutral wire are integrated. Become Therefore, when the power cable is laid, the main power cable and the neutral wire, which have been separately laid conventionally, can be collectively laid as one power cable. When the neutral conductor is used as a return circuit, the magnetic field generated by the DC current flowing in the main conductor can be canceled by the magnetic field produced by the current in the neutral conductor, so that the current magnetic field of the main conductor is prevented from leaking outside. Can be prevented.
【０００９】なお、主絶縁層を直流送電電圧用の絶縁材
料とし、中性線部絶縁層を主直流電力ケーブル部との絶
縁が確保される絶縁材料とすれば、中性線部絶縁体を直
流高圧用にする必要がなく、絶縁材料を低廉にすること
ができる。また、中性線部導体の総断面積は主導体の断
面積の５０〜１００％とすれば、中性線部を帰路回路と
して利用する場合に発熱などを防止できる。また、中性
線部は、主電力ケーブルの外周をほぼ全周に亙って覆う
ように配設すれば、全周にわたって均一な磁界で主導体
電流発生磁界をキャンセルして該磁界が外部に漏れるこ
とをより確実に防止できる。If the main insulating layer is made of an insulating material for DC transmission voltage and the neutral wire insulating layer is made of an insulating material which ensures insulation from the main DC power cable, the neutral wire insulator is formed. There is no need to use DC high voltage, and the cost of the insulating material can be reduced. When the total cross-sectional area of the neutral conductor is 50 to 100% of the cross-sectional area of the main conductor, heat generation can be prevented when the neutral conductor is used as a return circuit. Further, if the neutral conductor is disposed so as to cover the outer periphery of the main power cable over substantially the entire periphery, the main conductor current generating magnetic field is canceled by a uniform magnetic field over the entire periphery, and the magnetic field is externally applied. Leakage can be more reliably prevented.
【００１０】[0010]
【発明の実施の形態】以下、図面を参照して本発明の実
施形態を詳細に説明する。図１は実施形態にかかる直流
送電に用いる直流電力用ケーブルの説明図である。図に
示すように、直流電力用ケーブルは、主直流電力ケーブ
ル部１０と中性線部１２とからなり、前記図３の単極送
電法、図４の双極送電法のいずれにも使用可能なもので
ある。Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is an explanatory diagram of a DC power cable used for DC power transmission according to the embodiment. As shown in the figure, the DC power cable comprises a main DC power cable section 10 and a neutral wire section 12, and can be used for either the unipolar power transmission method of FIG. 3 or the bipolar power transmission method of FIG. Things.
【００１１】前記主直流電力ケーブル部１０は、中心の
導体（主導体）１４の外周に順に内部半導電層１６、主
絶縁層１８、外部半導電層２０、鉛被層（金属シース層
に相当）２２、および防食層２４を有する。それと共
に、前記中性線部１２は中心導体２６外周に絶縁層２８
を有するものである。そして、主直流電力ケーブル部１
０の外周に接して中性線部１２を複数（実施形態では２
５本）、主直流電力ケーブル部１０に同心円上に配設し
かつ一体的に固定したものである。The main DC power cable section 10 includes an inner semiconductive layer 16, a main insulating layer 18, an outer semiconductive layer 20, and a lead coating layer (corresponding to a metal sheath layer) in this order around the center conductor (main conductor) 14. ) 22, and an anticorrosion layer 24. At the same time, the neutral wire portion 12 is formed around the center conductor 26 around the insulating layer 28.
It has. And the main DC power cable section 1
0 and a plurality of neutral wires 12 (in the embodiment, 2
5), which are disposed concentrically on the main DC power cable section 10 and are integrally fixed.
【００１２】主直流電力ケーブル部１０の主絶縁層１８
は、耐直流送電電圧用（６０〜５００ｋｖ）の絶縁材料
を用いることができる。ゴム系またはプラスチック系の
もので例えばカーボン充填材入り架橋ポリエチレン、変
成ポリオレフィンの樹脂、または単独の架橋ポリエチレ
ンからなることができる。また、中性線部絶縁層２８は
主直流電力ケーブル部１０との絶縁が確保される絶縁材
料からなり、例えば非架橋ポリエチレンを２〜７ｍｍ被
覆したものである。The main insulating layer 18 of the main DC power cable section 10
Can use an insulating material for a DC transmission voltage (60 to 500 kv). It can be made of a rubber-based or plastic-based cross-linked polyethylene containing a carbon filler, a modified polyolefin resin, or a single cross-linked polyethylene. The neutral wire insulating layer 28 is made of an insulating material that ensures insulation from the main DC power cable section 10 and is, for example, a non-crosslinked polyethylene coated with 2 to 7 mm.
【００１３】なお、主直流電力ケーブル部１０の鉛被層
２２内周部には遮蔽層３０を設けることができる。ま
た、中性線部１２はその配列された内周に半導電クッシ
ョン層３２、半導電遮水層３４などを設けることができ
る。また、中性線部１２は、主直流電力ケーブル部１０
の外周をほぼ全周に亙って覆うように配設することが好
ましい。A shielding layer 30 can be provided on the inner peripheral portion of the lead coating layer 22 of the main DC power cable section 10. Further, the neutral conductor 12 can be provided with a semiconductive cushion layer 32, a semiconductive waterproof layer 34, and the like on the inner periphery where the neutral wire part 12 is arranged. Further, the neutral wire section 12 is connected to the main DC power cable section 10.
Is preferably arranged so as to cover substantially the entire outer circumference.
【００１４】そして、中性線部１２中心導体２６の総断
面積は前記電力ケーブル部１０の主導体１４の断面積の
５０〜１００％である。The total cross-sectional area of the center conductor 26 of the neutral wire section 12 is 50 to 100% of the cross-sectional area of the main conductor 14 of the power cable section 10.
【００１５】前記実施形態の中性線復号直流ケーブルを
海底ケーブルとして用いる場合は、外周部に座床、鉄線
外装およびサービング層を設ける。When the neutral decoding DC cable of the above embodiment is used as a submarine cable, a seat bed, an iron wire armor and a serving layer are provided on the outer periphery.
【００１６】上記実施形態によれば、主電力ケーブル部
１０の鉛被層２２の外周に中性線部１２を複数配設して
固定したので、主電力ケーブル部１０と中性線部１２が
一体になり、電力ケーブル布設に際して、主電力ケーブ
ルと中性線を一つの電力ケーブルとして一括に布設でき
る。また、中性線部１２を帰路回路として用いた場合
に、主導体１４に流れる直流電流による発生磁界が中性
線部導体２６の電流による磁界でキャンセルできるの
で、主導体１４の電流磁界が外部に漏れるのを防止でき
る。したがって、航行船舶にコンパスエラーが生じるこ
とはない。According to the above embodiment, a plurality of neutral wires 12 are arranged and fixed on the outer periphery of the lead covering layer 22 of the main power cable 10, so that the main power cable 10 and the neutral wire 12 are When the power cable is laid, the main power cable and the neutral wire can be laid together as one power cable. Further, when the neutral conductor 12 is used as a return circuit, the magnetic field generated by the DC current flowing through the main conductor 14 can be canceled by the magnetic field produced by the current flowing through the neutral conductor 26. Leakage can be prevented. Therefore, a compass error does not occur in the traveling ship.
【００１７】なお、主絶縁層１８を直流送電電圧用の絶
縁材料とし、絶縁層２８を鉛被層２２との絶縁が確保さ
れる絶縁材料とするので、中性線部絶縁層２８を直流高
圧用にする必要がなく、絶縁材料を低廉にすることがで
きる。Since the main insulating layer 18 is made of an insulating material for a DC transmission voltage and the insulating layer 28 is made of an insulating material which ensures insulation from the lead coating layer 22, the neutral wire insulating layer 28 is made of a DC high voltage. It is not necessary to use it, and the cost of the insulating material can be reduced.
【００１８】また、中性線部１２導体２６の総断面積は
主導体の断面積の５０〜１００％とするので、中性線部
１２を帰路回路として利用する場合に十分な導体断面積
であるので発熱などを防止できる。また、中性線部１２
は、主直流電力ケーブル部１０の外周をほぼ全周に亙っ
て覆うように配設するので、全周にわたって均一な磁界
で主導体電流発生磁界を確実にキャンセルできる。Since the total cross-sectional area of the conductor 26 of the neutral wire portion 12 is set to 50% to 100% of the cross-sectional area of the main conductor, a sufficient conductor cross-sectional area is used when the neutral wire portion 12 is used as a return circuit. As a result, heat generation can be prevented. In addition, the neutral conductor 12
Is arranged so as to cover the outer circumference of the main DC power cable section 10 over substantially the entire circumference, so that the main conductor current generating magnetic field can be reliably canceled with a uniform magnetic field over the entire circumference.
【００１９】さらに、概略設計値として、例えば導体が
８００ｍｍ2の海底直流電力ケーブルにおいて、６０ｋ
ｖ級で外径１２６．２ｍｍ、許容電流１３００Ａであ
り、１２５ｋｖ級で外径１３２．０ｍｍ、許容電流１２
８０Ａである。また、２５０ｋｖ級で外径１４２．８ｍ
ｍ、許容電流１２５０Ａであり、５００ｋｖ級で外径１
６５．０ｍｍ、許容電流１２１０Ａである。これに対し
て従来の８００ｍｍ2の海底直流電力ケーブルでは、６
０ｋｖ級で外径８８．６ｍｍ、許容電流１５３０Ａであ
り、１２５ｋｖ級で外径９５ｍｍ、許容電流１４８０Ａ
であり、また２５０ｋｖ級で外径１０７．８ｍｍ、許容
電流１４１０Ａ、５００ｋｖ級では外径１３２ｍｍ、許
容電流１３２０Ａであり、大きさ的にも極端に大きくな
っておらず、布設などが容易になることが理解できる。Further, as a rough design value, for example, in a submarine DC power cable having a conductor of 800 mm 2 ,
The outer diameter is 126.2 mm and the permissible current is 1300 A in the v class, and the outer diameter is 132.0 mm and the permissible current is 12 in the 125 kv class.
80A. The outer diameter is 142.8m in the 250kv class.
m, allowable current 1250A, 500kv class, outer diameter 1
65.0 mm and an allowable current of 1210 A. In contrast, with a conventional 800 mm 2 submarine DC power cable, 6
The outer diameter is 88.6 mm and the permissible current is 1530 A in the 0 kv class, and the outer diameter is 95 mm and the permissible current is 1480 A in the 125 kv class.
In addition, the outer diameter is 107.8 mm and the allowable current is 1410 A in the 250 kv class, and the outer diameter is 132 mm and the allowable current is 1320 A in the 500 kv class. Can understand.
【００２０】なお、本発明は前記実施形態のように主直
流電力ケーブル部にＣＶ直流電力ケーブルの構造を採用
することに限定されず、図２に示すような、ＯＦ直流電
力ケーブルによっても同様に実施できることは明らかで
ある。図２において、３４は油路であって油路３４内周
面に金属スパイラルが設けられている。その他は、図１
と同様部分に同一符号を付している。Note that the present invention is not limited to adopting the structure of the CV DC power cable in the main DC power cable portion as in the above-described embodiment, and the same applies to the OF DC power cable as shown in FIG. Clearly what can be done. In FIG. 2, reference numeral 34 denotes an oil passage, and a metal spiral is provided on the inner peripheral surface of the oil passage 34. Others are shown in Fig. 1.
The same reference numerals are given to the same parts as.
【００２１】[0021]
【発明の効果】以上説明した通り、本発明によれば、主
直流電力ケーブルと中性線がを一体にするので、電力ケ
ーブルの布設工期短縮およびコスト削減ができ、それと
共に、複数の中性線が直流電力ケーブルの外周を取り巻
くので直流電力ケーブルから外部へ磁界が漏れることを
確実に防止できる。As described above, according to the present invention, the main DC power cable and the neutral wire are integrated, so that the construction period of the power cable can be shortened and the cost can be reduced. Since the wire surrounds the outer periphery of the DC power cable, the leakage of the magnetic field from the DC power cable to the outside can be reliably prevented.
【図１】本発明の実施形態に係る中性線複合直流電力用
ケーブルの説明図である。FIG. 1 is an explanatory diagram of a neutral composite DC power cable according to an embodiment of the present invention.
【図２】他の実施形態の中性線複合直流電力用ケーブル
の説明図である。FIG. 2 is an explanatory diagram of a neutral composite DC power cable according to another embodiment.
【図３】直流電力ケーブルの大地帰路の単極運転法の説
明図である。FIG. 3 is an explanatory view of a unipolar operation method of a DC power cable on a ground return.
【図４】直流電力ケーブルの帰線回路の単極運転法の説
明図である。FIG. 4 is an explanatory diagram of a unipolar operation method of a return circuit of a DC power cable.
【図５】直流電力ケーブルの双極運転法の説明図であ
る。FIG. 5 is an explanatory diagram of a bipolar operation method of a DC power cable.
１０ 主直流電力ケーブル部 １２ 中性線部 １４ 主導体 １８ 主絶縁層 ２２ 鉛被層 ２６ 中性線部中心導体 ２８ 中性線部絶縁層 DESCRIPTION OF SYMBOLS 10 Main DC power cable part 12 Neutral wire part 14 Main conductor 18 Main insulating layer 22 Lead coating 26 Neutral wire center conductor 28 Neutral wire insulating layer
Claims (3)
おいて、主直流電力ケーブル部は、中心の主導体の外周
に主絶縁層および金属シース層を有し、中性線部は導体
外周に絶縁層を有するものであって、主直流電力ケーブ
ル部の外周に接して中性線部を複数配設しかつ一体的に
固定したことを特徴とする中性線複合直流電力用ケーブ
ル。In a DC power cable used for DC power transmission, a main DC power cable portion has a main insulating layer and a metal sheath layer on an outer periphery of a central main conductor, and a neutral wire portion has an insulating layer on an outer periphery of the conductor. Wherein a plurality of neutral wires are disposed in contact with the outer periphery of the main DC power cable and fixed integrally therewith.
圧用の絶縁材料からなり、中性線部絶縁層は主直流電力
ケーブル部との絶縁が確保される絶縁材料からなること
を特徴とする請求項１に記載の中性線複合直流電力用ケ
ーブル。2. The main power cable main insulating layer is made of an insulating material for withstanding DC transmission voltage, and the neutral wire part insulating layer is made of an insulating material that ensures insulation from the main DC power cable part. The neutral composite DC power cable according to claim 1.
積の５０〜１００％であることを特徴とする請求項１ま
たは２に記載の中性線複合直流電力用ケーブル。3. The neutral composite DC power cable according to claim 1, wherein a total cross-sectional area of the neutral conductor is 50 to 100% of a cross-sectional area of the main conductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27753797A JP3792861B2 (en) | 1997-10-09 | 1997-10-09 | Neutral wire composite DC power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27753797A JP3792861B2 (en) | 1997-10-09 | 1997-10-09 | Neutral wire composite DC power cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11120833A true JPH11120833A (en) | 1999-04-30 |
| JP3792861B2 JP3792861B2 (en) | 2006-07-05 |
Family
ID=17584943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27753797A Expired - Fee Related JP3792861B2 (en) | 1997-10-09 | 1997-10-09 | Neutral wire composite DC power cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3792861B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003052774A1 (en) * | 2001-12-18 | 2003-06-26 | Sumitomo Electric Industries, Ltd. | Dc superconducting cable |
| KR100479456B1 (en) * | 2002-10-31 | 2005-03-31 | 한국전력공사 | Waterproof underground power cable applications |
| JP2007059085A (en) * | 2005-08-22 | 2007-03-08 | Viscas Corp | Bipolar dc power transmission coaxial cable |
| WO2011024262A1 (en) * | 2009-08-26 | 2011-03-03 | 太陽ケーブルテック株式会社 | Electric cable |
| CN103093891A (en) * | 2013-02-04 | 2013-05-08 | 宁波东方电缆股份有限公司 | Direct current submarine cable for +/- 320kV flexible transmission |
| CN104505163A (en) * | 2014-12-22 | 2015-04-08 | 河北华通线缆集团有限公司 | Compact composite conductor overhead composite cable and production process for same |
-
1997
- 1997-10-09 JP JP27753797A patent/JP3792861B2/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003052774A1 (en) * | 2001-12-18 | 2003-06-26 | Sumitomo Electric Industries, Ltd. | Dc superconducting cable |
| US7238887B2 (en) | 2001-12-18 | 2007-07-03 | Sumitomo Electric Industries, Ltd. | DC superconducting cable |
| KR100479456B1 (en) * | 2002-10-31 | 2005-03-31 | 한국전력공사 | Waterproof underground power cable applications |
| JP2007059085A (en) * | 2005-08-22 | 2007-03-08 | Viscas Corp | Bipolar dc power transmission coaxial cable |
| JP4668003B2 (en) * | 2005-08-22 | 2011-04-13 | 株式会社ビスキャス | Coaxial cable for bipolar DC power transmission |
| WO2011024262A1 (en) * | 2009-08-26 | 2011-03-03 | 太陽ケーブルテック株式会社 | Electric cable |
| CN103093891A (en) * | 2013-02-04 | 2013-05-08 | 宁波东方电缆股份有限公司 | Direct current submarine cable for +/- 320kV flexible transmission |
| CN104505163A (en) * | 2014-12-22 | 2015-04-08 | 河北华通线缆集团有限公司 | Compact composite conductor overhead composite cable and production process for same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3792861B2 (en) | 2006-07-05 |
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