JPH0618587A - Method for applied voltage test of dc power cable - Google Patents
Method for applied voltage test of dc power cableInfo
- Publication number
- JPH0618587A JPH0618587A JP4199123A JP19912392A JPH0618587A JP H0618587 A JPH0618587 A JP H0618587A JP 4199123 A JP4199123 A JP 4199123A JP 19912392 A JP19912392 A JP 19912392A JP H0618587 A JPH0618587 A JP H0618587A
- Authority
- JP
- Japan
- Prior art keywords
- cable
- current
- rectifier
- sample
- conductor
- 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.)
- Granted
Links
Landscapes
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】この発明は、直流電力ケーブルの
課通電試験方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of testing a DC power cable for energization.
【0002】[0002]
【従来の技術】図5において、10は試験用変圧器、1
2は倍電圧整流回路、14は直流電力ケーブルの試料で
ある。倍電圧整流回路12によって試料14に試験用の
直流電圧を課電する。試料14の両端を導体16で短絡
して閉回路を形成し、電流用変圧器18を介して試験用
の交流電流を流す。2. Description of the Related Art In FIG. 5, 10 is a test transformer and 1 is a test transformer.
2 is a voltage doubler rectifier circuit, and 14 is a sample of a DC power cable. A DC voltage for testing is applied to the sample 14 by the voltage doubler rectifier circuit 12. Both ends of the sample 14 are short-circuited by the conductor 16 to form a closed circuit, and a test AC current is passed through the current transformer 18.
【0003】[0003]
【発明が解決しようとする課題】従来の直流電力ケーブ
ルの課通電試験は、上記のように、課電は直流であった
が、通電は交流で行い、特に直流通電は行っていなかっ
た。しかし、交流通電の場合は、直流の場合に問題とな
るスペースチャージの影響を受けないため、実ラインと
は異なる評価結果となる可能性があった。In the conventional energization test of the DC power cable, as described above, the energization was DC, but energization was AC, and especially DC energization was not performed. However, in the case of AC energization, there is a possibility that the evaluation result may be different from that of the actual line because it is not affected by the space charge, which is a problem in the case of DC.
【0004】[0004]
(1)図1、図2、図3に示すように、ケーブル試料1
4とは別の補助ケーブル20を用意し、それに電流用変
圧器18を介して交流電流を流し、その交流電流を直流
電流に変換して前記ケーブル試料14に流すようにす
る。 (2)あるいは図4のように、補助ケーブル20を使わ
ないで、ケーブル試料14の両端を導体23で短絡して
閉回路を形成し、その導体23に大地から絶縁した半波
整流器22を設ける。そして、電流用変圧器18を、上
記閉回路の任意の位置に取り付け、電流用変圧器18と
整流器22の作用によって発生する直流電流をケーブル
試料14に流すようにする。(1) As shown in FIGS. 1, 2 and 3, a cable sample 1
An auxiliary cable 20 different from that of No. 4 is prepared, and an alternating current is made to flow through the current transformer 18, and the alternating current is converted to a direct current and is made to flow to the cable sample 14. (2) Alternatively, as shown in FIG. 4, without using the auxiliary cable 20, both ends of the cable sample 14 are short-circuited by the conductor 23 to form a closed circuit, and the conductor 23 is provided with the half-wave rectifier 22 insulated from the ground. . Then, the current transformer 18 is attached at an arbitrary position in the closed circuit so that the DC current generated by the action of the current transformer 18 and the rectifier 22 is passed through the cable sample 14.
【0005】[0005]
【作 用】課電・通電の両方とも直流で行われる。その
ため、実ラインと同じ評価が可能になる。[Operation] Both DC and energization are performed with DC. Therefore, the same evaluation as the actual line becomes possible.
【0006】[0006]
【実施例1】図1は本発明の実施例1の説明図、図2は
回路図である。この場合は上記のように、試料14の他
に補助ケーブル20を用いる。この補助ケーブル20に
は、試料14と同程度の電流(実効値)が流れ、同程度
の電圧(後記の整流器を介して加わる)が加わるので、
それに耐えるものでなければならない。それに耐えるも
のであれば、直流・交流何れの電力ケーブルでもよい。
この補助ケーブル20は、1本用意しておけば、繰り返
し使用することができる。なお、試料ケーブル14およ
び補助ケーブル20とも、碍子36で吊して、倒れない
ようにしている。First Embodiment FIG. 1 is an explanatory diagram of a first embodiment of the present invention, and FIG. 2 is a circuit diagram. In this case, as described above, the auxiliary cable 20 is used in addition to the sample 14. In this auxiliary cable 20, a current (effective value) of the same degree as that of the sample 14 flows, and a voltage of the same degree (added via a rectifier described later) is applied.
It has to withstand it. Any DC or AC power cable may be used as long as it can withstand it.
If one auxiliary cable 20 is prepared, it can be used repeatedly. Both the sample cable 14 and the auxiliary cable 20 are hung by the insulator 36 so as not to fall.
【0007】補助ケーブル20の両端を導体21で短絡
し、その導体21の途中に全波整流器22を設ける。電
力用変圧器18を介して補助ケーブル20に交流を流
し、それを整流器22で直流電流に変換して試料14に
流す。Both ends of the auxiliary cable 20 are short-circuited by a conductor 21, and a full-wave rectifier 22 is provided in the middle of the conductor 21. Alternating current is passed through the auxiliary cable 20 through the power transformer 18, converted into direct current by the rectifier 22, and then passed through the sample 14.
【0008】24は直流電流測定装置の全体を示す。こ
れには、送量部26、伝送部30、受量部32からなる
遠隔測定方式を用いる。送量部26はたとえば分流器2
7と変換器28とからなり、変換器28は電流検出素子
・A/D変換素子・E/O変換素子などで構成される。
変換器28の電源はたとえば太陽電池とバッテリーのフ
ロー充電方式とする。Reference numeral 24 shows the entire DC current measuring device. For this, a telemetry method including a sending unit 26, a transmitting unit 30, and a receiving unit 32 is used. The delivery unit 26 is, for example, the flow divider 2
7 and a converter 28, which is composed of a current detection element, an A / D conversion element, an E / O conversion element, and the like.
The power source of the converter 28 is, for example, a flow charging system of a solar cell and a battery.
【0009】この送量部26(変換器28の電池を含
む)と上記の整流器22とを一つのケース34に収納
し、碍子36で吊して大地と絶縁する。The feeding unit 26 (including the battery of the converter 28) and the rectifier 22 are housed in one case 34 and suspended by an insulator 36 to be insulated from the ground.
【0010】受量部32は地上に設置する。受量部32
はたとえばO/E変換素子・D/A変換素子・表示器な
どで構成される。ケース34内の送量部26と地上の受
量部32との間の伝送部30には、たとえば電気的に絶
縁性のある光ファイバを用いる。The receiving portion 32 is installed on the ground. Receiving unit 32
Is composed of, for example, an O / E conversion element / D / A conversion element / display. For the transmission unit 30 between the sending unit 26 in the case 34 and the receiving unit 32 on the ground, for example, an electrically insulating optical fiber is used.
【0011】整流器22には大電流が流れてかなり高温
になるので、ブロア38で風冷する。ブロワ38は地上
に設置する。これに絶縁ホース40を接続し、その吹出
し口を整流器22に向けて冷却する。絶縁ホース40と
しては、試験電圧に耐えられるものを用いる。なお、倍
電圧整流回路12、試料14、補助ケーブル20も碍子
36で吊して大地から離す。Since a large current flows through the rectifier 22 and the temperature becomes considerably high, it is cooled by the blower 38. The blower 38 is installed on the ground. An insulating hose 40 is connected to this, and its outlet is cooled toward the rectifier 22. As the insulating hose 40, one that can withstand the test voltage is used. The voltage doubler rectifier circuit 12, the sample 14, and the auxiliary cable 20 are also hung by the insulator 36 and separated from the ground.
【0012】[0012]
【実施例2】図3は、単相の半波整流を行う場合であ
る。全波整流に比べて、交流電流値に対する直流電流値
は小さくなるが、その分交流電流値を大きくすればよ
い。[Embodiment 2] FIG. 3 shows a case where single-phase half-wave rectification is performed. Although the DC current value with respect to the AC current value is smaller than that in full-wave rectification, the AC current value may be increased accordingly.
【0013】[0013]
【実施例3】図4は、補助ケーブル20を使わない場合
である。この場合も半波整流を行う。すなわち、ケーブ
ル試料14の両端を導体23で短絡して閉回路を形成
し、その導体23に大地から絶縁した半波整流器22を
設ける。電流用変圧器18はケーブル試料14に取り付
ける。そして、前記電流用変圧器18と整流器22の作
用によって発生する直流電流をケーブル試料14に流す
ようにする。なお、図4のようにすると、図2、図3の
場合に比べて、補助ケーブルを使う必要がない。Third Embodiment FIG. 4 shows a case where the auxiliary cable 20 is not used. In this case also, half-wave rectification is performed. That is, both ends of the cable sample 14 are short-circuited by the conductor 23 to form a closed circuit, and the conductor 23 is provided with the half-wave rectifier 22 insulated from the ground. The current transformer 18 is attached to the cable sample 14. Then, the direct current generated by the action of the current transformer 18 and the rectifier 22 is caused to flow through the cable sample 14. It should be noted that, as shown in FIG. 4, it is not necessary to use an auxiliary cable as compared with the cases of FIGS.
【0014】[0014]
【発明の効果】課電・通電の両方とも直流で行われるよ
うになる。そのため、実ラインと同じ評価が可能にな
る。[Effects of the Invention] Both the charging and the energization are performed by direct current. Therefore, the same evaluation as the actual line becomes possible.
【図1】本発明の実施例1の説明図。FIG. 1 is an explanatory diagram of a first embodiment of the present invention.
【図2】上記図1に示した実施例の回路図。FIG. 2 is a circuit diagram of the embodiment shown in FIG.
【図3】本発明の実施例2の説明図。FIG. 3 is an explanatory diagram of a second embodiment of the present invention.
【図4】本発明の実施例3の説明図。FIG. 4 is an explanatory diagram of Embodiment 3 of the present invention.
【図5】従来技術の説明図。FIG. 5 is an explanatory diagram of a conventional technique.
10 試験用変圧器 12 倍電圧整流回路 14 直流電力ケーブルの試料 16,21 導体 18 電流用変圧器 20 補助ケーブル 21,23 導体 22 整流器 24 直流電流測定装置 26 送量部 27 分流器 28 変換器 30 伝送部 32 受量部 34 ケース 36 碍子 38 プロワ 40 絶縁ホース 10 Test Transformer 12 Double Voltage Rectifier Circuit 14 Sample of DC Power Cable 16, 21 Conductor 18 Current Transformer 20 Auxiliary Cable 21, 23 Conductor 22 Rectifier 24 DC Current Measuring Device 26 Shunting Section 27 Shunt 28 28 Converter 30 Transmission part 32 Received part 34 Case 36 Insulator 38 Prowa 40 Insulation hose
Claims (2)
ーブル試料に電流を流す課通電試験において、前記ケー
ブル試料とは別のケーブルに電流用変圧器を介して交流
電流を流し、その交流電流を大地から絶縁した整流器に
よって直流電流に変換して前記ケーブル試料に流すよう
にする、直流電力ケーブルの課通電試験方法。1. In an energization test in which a current is applied to a DC power cable sample under the application of a DC high voltage, an AC current is applied to a cable different from the cable sample via a current transformer, and the AC current is applied. A method for conducting an energization test of a DC power cable, in which a rectifier insulated from the ground is used to convert the DC current into a DC current, which is then passed through the cable sample.
ーブル試料に電流を流す課通電試験において、前記ケー
ブル試料の両端を導体で短絡して閉回路を形成し、前記
導体に大地から絶縁した単相半波整流器を設けるととも
に、前記閉回路に電流用変圧器を取り付け、前記電流用
変圧器と整流器の作用によって発生する直流電流を前記
ケーブル試料に流すようにする、直流電力ケーブルの課
通電試験方法。2. In an energization test in which an electric current is applied to a DC power cable sample under the application of a DC high voltage, both ends of the cable sample are short-circuited with a conductor to form a closed circuit, and the conductor is insulated from the ground. A single-phase half-wave rectifier is provided, a current transformer is attached to the closed circuit, and a DC current generated by the action of the current transformer and a rectifier is passed through the cable sample. Test method.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP04199123A JP3127383B2 (en) | 1992-07-02 | 1992-07-02 | DC power cable application test method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP04199123A JP3127383B2 (en) | 1992-07-02 | 1992-07-02 | DC power cable application test method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0618587A true JPH0618587A (en) | 1994-01-25 |
JP3127383B2 JP3127383B2 (en) | 2001-01-22 |
Family
ID=16402525
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP04199123A Expired - Fee Related JP3127383B2 (en) | 1992-07-02 | 1992-07-02 | DC power cable application test method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3127383B2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103308793A (en) * | 2013-03-26 | 2013-09-18 | 浙江省电力公司舟山电力局 | Testing device for heating direct-current cable |
WO2014046467A1 (en) * | 2012-09-18 | 2014-03-27 | 한국전력공사 | Device for testing load of superconducting high-voltage dc cable |
KR20160029406A (en) * | 2014-09-05 | 2016-03-15 | 한국전력공사 | Voltage-current supply apparatus and method for superconducting cable testing |
CN109991559A (en) * | 2017-12-29 | 2019-07-09 | 湖南工业大学 | Monitoring data processing method, system and the storage medium of DC power-supply system |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH086515A (en) * | 1994-06-23 | 1996-01-12 | Katsunori Nagatomo | Case for display |
-
1992
- 1992-07-02 JP JP04199123A patent/JP3127383B2/en not_active Expired - Fee Related
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014046467A1 (en) * | 2012-09-18 | 2014-03-27 | 한국전력공사 | Device for testing load of superconducting high-voltage dc cable |
CN103308793A (en) * | 2013-03-26 | 2013-09-18 | 浙江省电力公司舟山电力局 | Testing device for heating direct-current cable |
CN103308793B (en) * | 2013-03-26 | 2016-05-11 | 浙江省电力公司舟山电力局 | A kind of experimental rig for direct current cables heating |
KR20160029406A (en) * | 2014-09-05 | 2016-03-15 | 한국전력공사 | Voltage-current supply apparatus and method for superconducting cable testing |
CN109991559A (en) * | 2017-12-29 | 2019-07-09 | 湖南工业大学 | Monitoring data processing method, system and the storage medium of DC power-supply system |
Also Published As
Publication number | Publication date |
---|---|
JP3127383B2 (en) | 2001-01-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN108427068A (en) | A kind of partial discharge of switchgear detection device and method | |
JP3127383B2 (en) | DC power cable application test method | |
US3821639A (en) | Socket ground line testing apparatus | |
US3156863A (en) | Apparatus for locating a fault in electric cables having semi-conducting coverings | |
KR870001734A (en) | Output signal generator | |
JP2876322B2 (en) | Diagnosis method for insulation deterioration of CV cable | |
CN209028110U (en) | A kind of power circuit singlephase earth fault lookup device signal source | |
CN209086348U (en) | High-voltage alternating testing transformer direct current output converted measurement device | |
KR100332839B1 (en) | Regulated voltage generator using magnetic flux | |
CN218099566U (en) | Partial discharge test device | |
JPH08205376A (en) | High voltage generating device and high voltage test device | |
JP2960782B2 (en) | Partial discharge measurement method | |
JPH05133996A (en) | Method for diagnosing insulation of power cable line | |
US5081412A (en) | Current conduction probe circuit | |
JPS5939774Y2 (en) | water cooled cable current detector | |
SU819747A1 (en) | Device for measuring insulation resistance of three-phase electric network with insulated neutral | |
RU2621479C1 (en) | Insulation test plant for electrotechnical objects | |
US2021000A (en) | High voltage generator | |
JPS6435281A (en) | Method for diagnosing dielectric breakdown of power cable | |
JP2612367B2 (en) | Diagnosis method for insulation deterioration of power cable | |
SU612332A1 (en) | Arrangement for protection against shorting to the housing of electric apparatus in ac network | |
JPH0862264A (en) | Insulation resistance measuring device for power cable | |
JPH10170590A (en) | Areal and underground line monitoring device | |
RU2038670C1 (en) | Converter unit of rectifier/inverter substation | |
SU658643A1 (en) | Indicator of short-circuiting current in cable mains with insulated neutral wire |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20001010 |
|
LAPS | Cancellation because of no payment of annual fees |