JPH0218812A - Dc cable - Google Patents
Dc cableInfo
- Publication number
- JPH0218812A JPH0218812A JP16817688A JP16817688A JPH0218812A JP H0218812 A JPH0218812 A JP H0218812A JP 16817688 A JP16817688 A JP 16817688A JP 16817688 A JP16817688 A JP 16817688A JP H0218812 A JPH0218812 A JP H0218812A
- Authority
- JP
- Japan
- Prior art keywords
- polyethylene
- cable
- stearate
- insulating material
- added
- 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.)
- Pending
Links
- 239000004698 Polyethylene Substances 0.000 claims abstract description 14
- -1 polyethylene Polymers 0.000 claims abstract description 14
- 229920000573 polyethylene Polymers 0.000 claims abstract description 14
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000012212 insulator Substances 0.000 claims abstract description 4
- 239000011810 insulating material Substances 0.000 abstract description 9
- 239000004020 conductor Substances 0.000 abstract description 2
- 229920003020 cross-linked polyethylene Polymers 0.000 abstract description 2
- 239000004703 cross-linked polyethylene Substances 0.000 abstract description 2
- 150000001875 compounds Chemical class 0.000 abstract 1
- 239000000463 material Substances 0.000 description 8
- 238000009825 accumulation Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 1
- XOUQAVYLRNOXDO-UHFFFAOYSA-N 2-tert-butyl-5-methylphenol Chemical compound CC1=CC=C(C(C)(C)C)C(O)=C1 XOUQAVYLRNOXDO-UHFFFAOYSA-N 0.000 description 1
- WBZOJFMJTUQVES-UHFFFAOYSA-K aluminum 2-hydroxyoctadecanoate Chemical compound OC(C(=O)[O-])CCCCCCCCCCCCCCCC.[Al+3].OC(C(=O)[O-])CCCCCCCCCCCCCCCC.OC(C(=O)[O-])CCCCCCCCCCCCCCCC WBZOJFMJTUQVES-UHFFFAOYSA-K 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 1
- 235000013539 calcium stearate Nutrition 0.000 description 1
- 239000008116 calcium stearate Substances 0.000 description 1
- RXPKHKBYUIHIGL-UHFFFAOYSA-L calcium;12-hydroxyoctadecanoate Chemical compound [Ca+2].CCCCCCC(O)CCCCCCCCCCC([O-])=O.CCCCCCC(O)CCCCCCCCCCC([O-])=O RXPKHKBYUIHIGL-UHFFFAOYSA-L 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- QNICMVJKCYAMIK-UHFFFAOYSA-L disodium octadecanoate Chemical compound [Na+].[Na+].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O QNICMVJKCYAMIK-UHFFFAOYSA-L 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- NTVDGBKMGBRCKB-UHFFFAOYSA-M sodium;12-hydroxyoctadecanoate Chemical compound [Na+].CCCCCCC(O)CCCCCCCCCCC([O-])=O NTVDGBKMGBRCKB-UHFFFAOYSA-M 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
Landscapes
- Organic Insulating Materials (AREA)
Abstract
Description
【発明の詳細な説明】
［産業−にの利用分野］
この発明は電カケープル、特に高分子絶縁押出型置流電
カケープルに関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electric cable, particularly a polymer insulated extruded current electric cable.
［従来の技術］
従来より交流高電圧用の電カケープルの絶縁材としては
、絶縁耐圧や誘電特性か優れていることからポリエチレ
ンを母体とした架橘ポリエチレンか汎用されている。[Prior Art] As an insulating material for AC power cables for high voltage AC, cross-linked polyethylene, which is based on polyethylene, has conventionally been widely used because of its excellent dielectric strength and dielectric properties.
そして、このようなポリエチレンを８１体とする架橘ポ
リエチレンか直流電圧を送配電する直流ケーブルにおけ
る絶縁材として広く用いられている。A cross-woven polyethylene made of 81 such polyethylenes is widely used as an insulating material in DC cables for transmitting and distributing DC voltage.
［発明か解決しようとする課題］
ところか、上述した絶縁材からなる押出型高分−Ｌ絶縁
ケーブルを高圧直流送電用に適用する場合には、いくつ
かの問題点が生じる。[Problems to be Solved by the Invention] However, when applying the extruded type polymer-L insulated cable made of the above-mentioned insulating material to high-voltage DC power transmission, several problems arise.
その大きな問題は、直流高電圧を印加することによって
絶縁体中に空間電荷が形成され、絶縁体中に局部高電界
か生じることによってケーブルの実質的な絶縁厚を小な
らしめてしまうことであり、このためにケーブル外形か
大きくなってしまう。The big problem is that by applying a high DC voltage, a space charge is formed in the insulator, which creates a localized high electric field in the insulator, which reduces the actual insulation thickness of the cable. For this reason, the outer diameter of the cable becomes large.
そこで、この発明の目的は上述の事情に鑑みてなされて
ものてあり、空間電荷蓄積を低減し、絶縁性源の優れた
直流ケーブルを提供することを目的とする。SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a DC cable with reduced space charge accumulation and an excellent insulation source.
［課題を解決するための手段］
この発明に係る直流ケーブルは、芯線導体の外周部にポ
リエチレンあるいは架橘ポリエチレンでなる絶縁材を形
成した直流ケーブルにおいて、ポリエチレンあるいは架
橘ポリエチレンにステアリン酸塩を添加して絶縁材を形
成するように構成したことを特徴とする。[Means for Solving the Problems] A DC cable according to the present invention is a DC cable in which an insulating material made of polyethylene or crossed polyethylene is formed on the outer periphery of a core conductor, and a stearate is added to the polyethylene or crossed polyethylene. The invention is characterized in that it is configured to form an insulating material by
［実 施 例］ 以下、この発明の実施例を詳細に説明する。[Example] Examples of the present invention will be described in detail below.
架橘ポリエチレン試料Ａと架橘ポリエチレンにステアリ
ン酸塩を添加した試料ＢないしＦの計６種のプレスシー
トを作成し各試料とした。この配合割合を第１表に纏め
て示す。A total of six types of press sheets were prepared and used as each sample: sample A of cross-fruited polyethylene and samples B to F, each of which was made of cross-fruited polyethylene with stearate added. This blending ratio is summarized in Table 1.
なお、試料Ａ〜Ｆのそれぞれのシート厚は０．１ｍｍで
あり、このような各試料Ａ〜Ｆに対して熱刺激電流測定
を行った。The sheet thickness of each of samples A to F was 0.1 mm, and thermally stimulated current measurements were performed on each of these samples A to F.
このときの測定条件は、電極径か２０ｍｍて初期バイア
スが５ｋＶで温度３０℃の状態で１０分間直流電圧を印
加した後、−１０℃の温度まで急冷し、電極を接地し、
上述の初期バイアスと同極性のコレクティングバイアス
１８０Ｖを印加しながら毎分温度を２℃ずつ昇温して９
０°Ｃの温度までの電流を測定した。The measurement conditions at this time were to apply a DC voltage for 10 minutes at an electrode diameter of 20 mm, an initial bias of 5 kV, and a temperature of 30°C, then rapidly cool it to a temperature of -10°C, and ground the electrode.
While applying a collecting bias of 180 V with the same polarity as the initial bias described above, the temperature was increased by 2°C every minute.
Current was measured up to a temperature of 0°C.
さらに、上述の熱刺激電流から温度毎の漏れ電蓄積賃を
求めた。この結果を第２表に示す。Furthermore, the leakage current accumulation charge for each temperature was determined from the above-mentioned thermal stimulation current. The results are shown in Table 2.
この第２表より明らかなように、ステアリン酸塩を添加
した試料Ｂ〜Ｆは、ステアリン酸塩を添加していない試
料Ａに比べ電荷蓄積量は少ないことがわかる。As is clear from Table 2, samples B to F to which stearate was added had a smaller amount of charge accumulation than sample A to which stearate was not added.
一方、使用するステアリン酸塩の量は、ポリエチレン１
００重量部に対してｏ、ｏｏｓ〜１．０重量部であるこ
とが望ましい。０．００５重量部以下では電荷蓄積抑制
効果が薄れてしまい。On the other hand, the amount of stearate used is
It is desirable that the amount is from o, oos to 1.0 parts by weight per 00 parts by weight. If it is less than 0.005 part by weight, the charge accumulation suppressing effect will be weakened.
１．０重量部以上ではステアリン酸塩がポリエチレン表
面に析出してしまう。If the amount is 1.0 parts by weight or more, stearate will precipitate on the surface of the polyethylene.
（ｌｕ下余白ン
第１表
第２表
材料イ：低密度ポリエチレン
材料口：架橘材（ジクミルパーオキサイド）材料ハ：酸
化防止材
（４，４′チオビス（３−メチル−６−ｔ−ブチル−フ
ェノール材料二ニステアリン酸ナトリウム
材料ホ：ステアリン酸カルシウム
材料へ：ヒドロキシステアリン酸ナトリウム材料ト：ヒ
トロキシステアリン酸カルシウム材料チ：ヒトロキシス
テアリン酸アルミニウム［発明の効果］
以上説明したように、この発明に係る直流ケーブルは、
絶縁材における電荷蓄積量か少ないために、この′１ニ
荷に起因するケーツル破壊電圧の低下や、極性反転時の
破壊電圧の低下が解消され、直流絶縁の安定性を向上で
きる。(lower margin) Table 1 Table 2 Material A: Low-density polyethylene material Opening: Dicumyl peroxide material C: Antioxidant (4,4'thiobis(3-methyl-6-t- Butyl-phenol material Sodium di-stearate material E: Calcium stearate material: Sodium hydroxystearate material G: Calcium hydroxystearate material H: Aluminum hydroxystearate [Effects of the invention] As explained above, this invention The relevant DC cable is
Since the amount of charge accumulated in the insulating material is small, the decrease in Ketzle breakdown voltage caused by this '1 charge and the decrease in breakdown voltage at the time of polarity reversal are eliminated, and the stability of DC insulation can be improved.
また、これに伴って絶縁材の厚みを薄くすることかてき
るのて各種絶縁材を劣化させることなくケーブルの小型
化ならびに軽騒化を［Ａることもできる。Additionally, by reducing the thickness of the insulating material, the cable can be made smaller and less noisy without deteriorating the various insulating materials.
特許出願人 ［１☆−電線株式会社Patent applicant [1☆-Electric Wire Co., Ltd.
Claims (1)
塩を添加したことを特徴とする絶縁体からなる直流ケー
ブル。A DC cable made of an insulator characterized by adding stearate to polyethylene or cross-woven polyethylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16817688A JPH0218812A (en) | 1988-07-05 | 1988-07-05 | Dc cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16817688A JPH0218812A (en) | 1988-07-05 | 1988-07-05 | Dc cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0218812A true JPH0218812A (en) | 1990-01-23 |
Family
ID=15863204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16817688A Pending JPH0218812A (en) | 1988-07-05 | 1988-07-05 | Dc cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0218812A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014218617A (en) * | 2013-05-10 | 2014-11-20 | 株式会社ジェイ・パワーシステムズ | Resin composition and dc cable |
-
1988
- 1988-07-05 JP JP16817688A patent/JPH0218812A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014218617A (en) * | 2013-05-10 | 2014-11-20 | 株式会社ジェイ・パワーシステムズ | Resin composition and dc cable |
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