JP2000009778A - D.c. cable electromechanical current-carrying test method and device - Google Patents
D.c. cable electromechanical current-carrying test method and deviceInfo
- Publication number
- JP2000009778A JP2000009778A JP10171739A JP17173998A JP2000009778A JP 2000009778 A JP2000009778 A JP 2000009778A JP 10171739 A JP10171739 A JP 10171739A JP 17173998 A JP17173998 A JP 17173998A JP 2000009778 A JP2000009778 A JP 2000009778A
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- Prior art keywords
- cable
- current
- test
- supply circuit
- closed container
- Prior art date
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、電力ケーブルの
実負荷試験に関するもので、特に直流電力ケーブルの課
通電試験方法及びその装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an actual load test of a power cable, and more particularly to a method and an apparatus for applying a current to a DC power cable.
【０００２】[0002]
【従来の技術】直流電力ケーブルの課通電試験は、図６
に示すように、課電は直流で行い、通電は交流で行なっ
ていた。即ち、図において、試料である直流ケーブルの
両端を通電バーで短絡して閉回路を形成し、通電用電流
変圧器（以下、通電用ＣＴという）を介して試験用の交
流電流を流すものである。2. Description of the Related Art FIG.
As shown in the figure, the power application was performed by DC and the energization was performed by AC. That is, in the figure, a closed circuit is formed by short-circuiting both ends of a DC cable, which is a sample, with a current-carrying bar, and an AC current for testing is passed through a current-carrying transformer (hereinafter referred to as a CT for carrying). is there.
【０００３】或は、図７に示すように、課電は直流で行
うとともに、通電は、ケーブル試料の両端間に整流器を
設けて閉回路を形成し、この閉回路に通電用ＣＴを設け
て、この通電用ＣＴと前記整流器の作用によって発生す
る直流電流をケーブル試料に流すものである。[0005] Alternatively, as shown in FIG. 7, power is applied by direct current, and energization is performed by providing a rectifier between both ends of the cable sample to form a closed circuit, and providing a CT for energization in the closed circuit. The DC current generated by the operation of the current-carrying CT and the rectifier flows through the cable sample.
【０００４】[0004]
【発明が解決しようとする課題】上記の直流課電＋交流
通電の方式による代替法は実ラインと異なる評価結果と
なる可能性があるため、今後、直流課電＋直流通電の方
式が義務づけられる方向にある。Since the above-mentioned alternative method using the DC charging and AC power supply may result in an evaluation result different from that of the actual line, the DC power supply + DC power supply method will be required in the future. In the direction.
【０００５】また、上記の図７にて説明したように、供
試ケーブル試料に通電用ＣＴを取り付ける方法では、シ
ース損あるいは鉄線鎧製の鉄損による発熱が大きく温度
測定が難しく、直流課電＋直流通電の方式であっても、
問題があった。Further, as described with reference to FIG. 7 described above, in the method of attaching a current-carrying CT to a test cable sample, heat generation is large due to sheath loss or iron loss made of iron wire armor, making it difficult to measure temperature. + Even in the case of DC
There was a problem.
【０００６】本出願人は、既に上記の問題に対して、ケ
ーブル試料とは別の補助ケーブルを用意し、それに通電
用ＣＴを取付け、その交流電流を直流電流に変換して供
試ケーブル試料に流すようにする方法を提案している
（特開平６−１８５８７号）。In order to solve the above-mentioned problem, the present applicant has prepared an auxiliary cable separate from the cable sample, attached a current-carrying CT thereto, converted the alternating current into a direct current, and converted it into a test cable sample. A method of causing the flow to flow has been proposed (JP-A-6-18587).
【０００７】この様な直流ケーブル課通電試験におい
て、例えば、図７に示すように、高圧絶縁架台上に、直
流発電器、あるいは直流整流回路を載置した場合、経年
変化、耐候性において気中暴露状態であり、保守管理上
問題であった。In such a DC cable application test, for example, as shown in FIG. 7, when a DC generator or a DC rectifier circuit is mounted on a high-voltage insulating stand, the aging and weather resistance are not sufficient. Exposure was a problem for maintenance.
【０００８】[0008]
【課題を解決するための手段】この発明は、直流高電圧
の課電下において供試直流ケーブル試料に直流電流を流
す課通電試験において、交流電流供給回路および整流器
と直流電流供給回路を密閉容器内の高絶縁性ガス中に保
持し、前記交流電流供給回路に前記供試直流ケーブルと
は別の通電用補助ケーブルを接続し、前記直流電流供給
回路に前記供試直流ケーブルを接続してそれぞれ前記整
流器を介して閉回路を形成し、前記密閉容器内において
前記供試直流ケーブルに課電するとともに、前記別の通
電用補助ケーブルに電流用変圧器を介して交流電流を流
し、その交流電流を前記整流回路によって直流電流に変
換して前記供試直流ケーブルに流すようにする直流ケー
ブル課通電試験方法である。SUMMARY OF THE INVENTION The present invention provides an AC current supply circuit, a rectifier, and a DC current supply circuit in a closed container in a current application test in which a DC current is applied to a DC cable sample under application of a DC high voltage. Held in a highly insulating gas within, connected to the AC current supply circuit another auxiliary cable for energization different from the test DC cable, and connected the test DC cable to the DC current supply circuit, respectively. A closed circuit is formed via the rectifier, and power is applied to the test DC cable in the closed container, and an AC current is applied to the another current-carrying auxiliary cable via a current transformer. Is converted into a DC current by the rectifier circuit and is supplied to the DC cable under test.
【０００９】また、密閉容器内に、基部に接続端子と上
部に導体引出棒を有する絶縁ブッシングの複数個を、該
接続端子を前記密閉容器の外にして配設され、前記絶縁
ブッシングにより前記密閉容器内に収容された交流電流
供給回路および整流器と直流電流供給回路が絶縁支持さ
れている密閉容器と、前記絶縁ブッシングの接続端子間
に接続された供試直流ケーブルとは別の通電用補助ケー
ブルと、を備えてなることを特徴とする直流ケーブル課
通電試験装置である。A plurality of insulating bushings each having a connection terminal at a base and a conductor pull-out bar at an upper portion are disposed in a closed container, and the connection terminals are provided outside the closed container. A sealed container in which the AC current supply circuit and the rectifier and the DC current supply circuit accommodated in the container are insulated and supported, and a separate auxiliary DC cable for conducting the test DC cable connected between the connection terminals of the insulating bushing. And a DC cable section conduction test apparatus characterized by comprising:
【００１０】また、密閉容器内に、基部に接続端子と上
部に導体引出棒を有する絶縁ブッシングの複数個を、該
接続端子を前記密閉容器の外にして配設されている第１
の密閉容器と、密閉容器内に、基部に接続端子と上部に
導体引出棒を有する絶縁ブッシングの複数個を、該接続
端子を前記密閉容器の外にして配設され、前記絶縁ブッ
シングにより前記密閉容器内に収容された交流電流供給
回路および整流回路が絶縁支持されている第２の密閉容
器と、前記第２の密閉容器の絶縁ブッシング接続端子間
に接続された供試直流ケーブルとは別の通電用補助ケー
ブルと、を備えてなることを特徴とする直流ケーブル課
通電試験装置である。A first insulating bushing having a connection terminal at a base and a conductor pull-out bar at an upper portion is provided in a closed container, and the first connection terminal is provided outside the closed container.
And a plurality of insulating bushings having a connection terminal at the base and a conductor pull-out bar at the top are disposed inside the closed container, and the connection terminals are disposed outside the closed container. A second sealed container in which the AC current supply circuit and the rectifier circuit housed in the container are insulated and supported, and a test DC cable connected between the insulating bushing connection terminals of the second sealed container are different. And a current supply auxiliary cable.
【００１１】さらにまた、前記補助ケーブルの周りに電
流用変圧器の一次巻線を設けたことを特徴とする。Still further, a primary winding of a current transformer is provided around the auxiliary cable.
【００１２】上記の構成により、課電、通電の両方とも
直流で行われるとともに、整流器と直流電流供給回路、
交流電流供給回路等の充電露出部が高絶縁性ガスの封入
されている密閉容器内に在るので、経年変化、耐候性に
おいて保守管理が容易となる。With the above configuration, both the power application and the energization are performed by DC, and the rectifier and the DC current supply circuit are provided.
Since the charging exposed portion of the AC current supply circuit and the like is located in the sealed container in which the highly insulating gas is sealed, maintenance and management in terms of aging and weather resistance become easy.
【００１３】[0013]
【発明の実施の形態】以下、本発明を図面に示す実施例
に沿って説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments shown in the drawings.
【００１４】図１は本発明の回路図であって、特に請求
項２に係わる課通電試験装置の回路図である。供試直流
ケーブル１１には、直流高電圧発生装置１２から課電リ
ードケーブル１４を経て直流高電圧が課電される、一方
交流電源から通電用ＣＴ２１を介して通電用補助ケーブ
ル１５に交流電流を発生し、交流電流供給回路１７、整
流器１６及び直流電流供給回路１８を経て直流電流に変
換されて直流が通電される。１９は分流器であり２８は
変換器であって、供試直流ケーブル１１に流れている電
流値を測定するものである。FIG. 1 is a circuit diagram of the present invention, in particular, a circuit diagram of a charging test apparatus according to a second aspect. The DC high voltage is applied to the test DC cable 11 from the DC high voltage generator 12 via the power supply lead cable 14, while an AC current is supplied from the AC power supply to the auxiliary auxiliary cable 15 via the CT 21. It is generated and converted to a DC current through an AC current supply circuit 17, a rectifier 16 and a DC current supply circuit 18, and DC is supplied. Reference numeral 19 denotes a shunt, and 28 denotes a converter, which measures a current value flowing through the DC cable 11 under test.
【００１５】これら電気回路は密閉容器１０内に高絶縁
性ガス、例えばＳＦ６ガスの雰囲気中で、基部に接続端
子と上部に導体引出棒を有する絶縁ブッシング１３によ
って絶縁支持されている。These electric circuits are insulated and supported in an airtight container 10 in an atmosphere of a highly insulating gas, for example, SF6 gas, by an insulating bushing 13 having a connection terminal at the base and a conductor lead bar at the top.
【００１６】図２は密閉容器１０を概略的に示す構造図
であり、円筒形の密閉容器１０の中に絶縁ブッシング１
３が基部に接続端子１３１と上部に導体引出棒１３２を
有して、接続端子１３１を密閉容器１０の外側にして設
けられている。絶縁ブッシング１３は片側に４個、他側
に２個設けられている。整流器１６等電気回路はＳＦ６
ガス２２の雰囲気中にて絶縁ブッシング１３によって支
持、固定されている。片側の４個の絶縁ブッシング１３
の接続端子ＤＣ−ＤＣに供試直流ケーブルを、接続端子
ＡＣ−ＡＣに通電用補助ケーブルを接続するものであ
る。FIG. 2 is a structural view schematically showing the closed container 10 in which an insulating bushing 1 is placed in a cylindrical closed container 10.
3 has a connection terminal 131 at the base and a conductor extraction rod 132 at the top, and is provided with the connection terminal 131 outside the sealed container 10. Four insulating bushings 13 are provided on one side and two on the other side. The electric circuit such as the rectifier 16 is SF6
It is supported and fixed by the insulating bushing 13 in the atmosphere of the gas 22. Four insulating bushings 13 on one side
The connection DC-DC is connected to a test DC cable, and the connection terminal AC-AC is connected to an auxiliary power cable.
【００１７】図３は本発明の他の実施例の回路図であっ
て、特に請求項３に係わる課通電試験装置の回路図であ
る。図において図１における同一機能を有するものには
同一の符号を付している。FIG. 3 is a circuit diagram of another embodiment of the present invention, and more particularly, a circuit diagram of a charging test apparatus according to a third embodiment. In the figure, components having the same functions as those in FIG. 1 are denoted by the same reference numerals.
【００１８】供試直流ケーブル１１はジョイント３３を
含むものと並設され、その先端同士を第１の密閉容器３
１の中において通電バー３４によって接続されている。
一方他端は第２の密閉容器３２に接続され、整流器１６
を通して閉回路が形成されている。供試直流ケーブル１
１には直流高電圧発生装置１２から課電リードケーブル
１４を通して直流高電圧が課電されるとともに、交流電
源から通電用ＣＴ２１を介して通電用補助ケーブル１５
に交流電流を発生し、交流電流供給回路１７、整流器１
６及び直流電流供給回路１８を経て直流電流に変換され
て直流が通電される。The test DC cable 11 is provided in parallel with the one including the joint 33, and the ends thereof are connected to the first closed container 3.
1 are connected by a power supply bar 34.
On the other hand, the other end is connected to the second closed container 32 and the rectifier 16
To form a closed circuit. Test DC cable 1
1 is supplied with a DC high voltage from a DC high voltage generator 12 through a power supply lead cable 14, and an auxiliary power cable 15 from an AC power supply via a current CT 21.
AC current supply circuit 17 and rectifier 1
6, and is converted into a DC current through the DC current supply circuit 18 and DC is supplied.
【００１９】第１の密閉容器３１と第２の密閉容器３２
ともに、内にＳＦ６ガスが封入されていて、充電部分は
このＳＦ６ガス雰囲気中において絶縁ブッシング１３に
よって支持されている。First closed container 31 and second closed container 32
In both cases, SF6 gas is sealed therein, and the charged portion is supported by the insulating bushing 13 in this SF6 gas atmosphere.
【００２０】図４は第１の密閉容器３１を概略的に示す
構造図であり、図５は第２の密閉容器を概略的に示す構
造図である。FIG. 4 is a structural diagram schematically showing the first closed container 31, and FIG. 5 is a structural diagram schematically showing the second closed container.
【００２１】図４において、円筒形の密閉容器内に絶縁
ブッシング１３が基部に接続端子１３１と上部に導体引
出棒１３２を有して、接続端子１３１を密閉容器３１の
外側にして設けられ、片側に２個、他側に２個を相対位
置を９０°ずらして設けられている。同様にして図５の
第２の密閉容器３２においては、絶縁ブッシング１３を
片側に２個、他側に２個を相対位置が９０°ずらして設
けられている。密閉容器３２内には、図５（ロ）に示す
ように、整流器１６等電気回路がＳＦ６ガスの雰囲気中
にて絶縁ブッシング１３によって支持、固定されてい
る。図の片側の絶縁ブッシング１３には供試直流ケーブ
ルが接続され、図の他側の絶縁ブッシング１３には通電
用補助ケーブル１５が接続される。In FIG. 4, an insulating bushing 13 is provided in a cylindrical closed container having a connection terminal 131 at a base and a conductor lead-out bar 132 at an upper portion, and the connection terminal 131 is provided outside the closed container 31. And two on the other side with a relative position shifted by 90 °. Similarly, in the second closed container 32 shown in FIG. 5, two insulating bushings 13 are provided on one side, and two insulating bushings 13 are provided on the other side with a relative position shifted by 90 °. As shown in FIG. 5B, an electric circuit such as the rectifier 16 is supported and fixed in the sealed container 32 by the insulating bushing 13 in an atmosphere of SF6 gas. A test DC cable is connected to the insulating bushing 13 on one side in the drawing, and a conduction auxiliary cable 15 is connected to the insulating bushing 13 on the other side in the drawing.
【００２２】上記の本発明の実施形態においては、密閉
容器を円筒形としたが、このような形に限定するもので
はない。また、通電の直流電流への変換を全波整流につ
いて説明したが半波整流であってもよいことは勿論であ
る。In the embodiment of the present invention described above, the closed container is cylindrical, but the present invention is not limited to such a shape. Further, the conversion of the energization to the DC current has been described for full-wave rectification, but it is needless to say that half-wave rectification may be used.
【００２３】[0023]
【発明の効果】以上説明してきたように、本発明によれ
ば、直流ケーブルの課通電試験を課電、通電の両方とも
直流で行われるので、実ラインと同様な評価が可能であ
る。As described above, according to the present invention, the DC cable application test is performed with both DC application and energization, so that the same evaluation as that of the actual line can be performed.
【００２４】整流器、その他の電気回路を、高絶縁性ガ
スの封入されている密閉容器内に収納することで、経年
変化、耐候性等の外部環境による影響をなくすことがで
きる。By housing the rectifier and other electric circuits in a sealed container filled with a highly insulating gas, the influence of external environment such as aging and weather resistance can be eliminated.
【００２５】従来用いられていた高圧架台、試料等の組
立て、据付けに要した多大な時間およびスペースを必要
としない。A large amount of time and space required for assembling and installing a conventionally used high-pressure gantry, sample, and the like are not required.
【図１】本発明の一実施形態の回路図。FIG. 1 is a circuit diagram of one embodiment of the present invention.
【図２】本発明に係る密閉容器の構造を概略的に示す説
明図。FIG. 2 is an explanatory view schematically showing the structure of a closed container according to the present invention.
【図３】本発明の他の実施形態の回路図。FIG. 3 is a circuit diagram of another embodiment of the present invention.
【図４】本発明の他の実施形態における第１の密閉容器
の構造を概略的に示す説明図。FIG. 4 is an explanatory view schematically showing a structure of a first closed container in another embodiment of the present invention.
【図５】本発明の他の実施形態における第２の密閉容器
を示し、（イ）は絶縁ブッシングの配置を示す説明図、
（ロ）は密閉容器の内部を示す説明図。FIG. 5 is a view showing a second closed container according to another embodiment of the present invention, and FIG.
(B) is an explanatory view showing the inside of the closed container.
【図６】従来技術の課通電試験方法の説明図。FIG. 6 is an explanatory view of a conventional energization test method.
【図７】従来技術の他の課通電試験方法の説明図。FIG. 7 is an explanatory view of another conventional energization test method of the prior art.
１０ 密閉容器 １１ 供試直流ケーブル １２ 直流高電圧発生装置 １３ 絶縁ブッシング １４ 課電リードケーブル １５ 通電用補助ケーブル １６ 整流器 ３１ 第１の密閉容器 ３２ 第２の密閉容器 DESCRIPTION OF SYMBOLS 10 Closed container 11 DC cable under test 12 DC high voltage generator 13 Insulated bushing 14 Lead cable for power supply 15 Auxiliary cable for conduction 16 Rectifier 31 First closed container 32 Second closed container
───────────────────────────────────────────────────── フロントページの続き (72)発明者 平澤 隆行 東京都江東区木場１−５−１ 株式会社フ ジクラ内 Ｆターム(参考） 2G036 AA28 BB20 CA12 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Takayuki Hirasawa 1-5-1 Kiba, Koto-ku, Tokyo Fujikura Co., Ltd. F-term (reference) 2G036 AA28 BB20 CA12
Claims (4)
ーブルに電流を流す課通電試験において、 交流電流供給回路および整流器と直流電流供給回路を密
閉容器内の高絶縁性ガス中に保持し、前記交流電流供給
回路に前記供試直流ケーブルとは別の通電用補助ケーブ
ルを接続し、前記直流電流供給回路に前記供試直流ケー
ブルを接続してそれぞれ前記整流器を介して閉回路を形
成し、前記密閉容器内において前記供試直流ケーブルに
課電するとともに、前記別の通電用補助ケーブルに電流
用変圧器を介して交流電流を流し、その交流電流を前記
整流回路によって直流電流に変換して前記供試直流ケー
ブルに流すようにする直流ケーブル課通電試験方法。1. An AC current supply circuit, a rectifier, and a DC current supply circuit are held in a highly insulating gas in a closed container in an application test in which a current is applied to a test DC cable under application of a DC high voltage. Connecting an auxiliary current-carrying cable different from the test DC cable to the AC current supply circuit, connecting the test DC cable to the DC current supply circuit, and forming a closed circuit via the rectifier. Applying a voltage to the test DC cable in the closed container, passing an AC current to the another current-carrying auxiliary cable through a current transformer, and converting the AC current to a DC current by the rectifier circuit. A DC cable application and conduction test method for flowing the DC cable to the test DC cable.
導体引出棒を有する絶縁ブッシングの複数個を、該接続
端子を前記密閉容器の外にして配設され、前記絶縁ブッ
シングにより前記密閉容器内に収容された交流電流供給
回路および整流器と直流電流供給回路が絶縁支持されて
いる密閉容器と、 前記絶縁ブッシングの接続端子間に接続された供試直流
ケーブルとは別の通電用補助ケーブルと、 を備えてなることを特徴とする直流ケーブル課通電試験
装置。2. A plurality of insulated bushings having a connection terminal at a base and a conductor pull-out bar at an upper portion are disposed in a closed container, with the connection terminals being outside the closed container, and the sealed bushing is used for the sealing. A sealed container in which the AC current supply circuit and the rectifier accommodated in the container and the DC current supply circuit are insulated and supported; and an auxiliary current-carrying cable different from the test DC cable connected between the connection terminals of the insulating bushing And a DC cable section conduction test apparatus, comprising:
導体引出棒を有する絶縁ブッシングの複数個を、該接続
端子を前記密閉容器の外にして配設されている第１の密
閉容器と、 密閉容器内に、基部に接続端子と上部に導体引出棒を有
する絶縁ブッシングの複数個を、該接続端子を前記密閉
容器の外にして配設され、前記絶縁ブッシングにより前
記密閉容器内に収容された交流電流供給回路および整流
器と直流電流供給回路が絶縁支持されている第２の密閉
容器と、 前記第２の密閉容器の絶縁ブッシング接続端子間に接続
された供試直流ケーブルとは別の通電用補助ケーブル
と、 を備えてなることを特徴とする直流ケーブル課通電試験
装置。3. A first hermetic container in which a plurality of insulating bushes each having a connection terminal at a base portion and a conductor pull-out bar at an upper portion are provided inside the hermetic container, and the connection terminals are provided outside the hermetic container. In the closed container, a plurality of insulating bushings having a connection terminal at the base and a conductor lead bar at the top are disposed with the connection terminals outside the closed container, and the inside of the closed container is provided by the insulating bushing. A second sealed container in which the accommodated AC current supply circuit, rectifier and DC current supply circuit are insulated and supported; and a test DC cable connected between the insulating bushing connection terminals of the second sealed container. A DC cable section conduction test apparatus, comprising: a current supply auxiliary cable;
の一次巻線を設けたことを特徴とする請求項２、又は請
求項３に記載の直流ケーブル課通電試験装置。4. The DC cable application test apparatus according to claim 2, wherein a primary winding of a current transformer is provided around the auxiliary cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10171739A JP2000009778A (en) | 1998-06-18 | 1998-06-18 | D.c. cable electromechanical current-carrying test method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10171739A JP2000009778A (en) | 1998-06-18 | 1998-06-18 | D.c. cable electromechanical current-carrying test method and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000009778A true JP2000009778A (en) | 2000-01-14 |
Family
ID=15928795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10171739A Pending JP2000009778A (en) | 1998-06-18 | 1998-06-18 | D.c. cable electromechanical current-carrying test method and device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000009778A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100752694B1 (en) * | 2006-05-10 | 2007-08-29 | 김호광 | Underground power cable |
| WO2014046467A1 (en) * | 2012-09-18 | 2014-03-27 | 한국전력공사 | Device for testing load of superconducting high-voltage dc cable |
-
1998
- 1998-06-18 JP JP10171739A patent/JP2000009778A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100752694B1 (en) * | 2006-05-10 | 2007-08-29 | 김호광 | Underground power cable |
| WO2014046467A1 (en) * | 2012-09-18 | 2014-03-27 | 한국전력공사 | Device for testing load of superconducting high-voltage dc cable |
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