JPS57157163A - Testing method for power cable - Google Patents
Testing method for power cableInfo
- Publication number
- JPS57157163A JPS57157163A JP4265181A JP4265181A JPS57157163A JP S57157163 A JPS57157163 A JP S57157163A JP 4265181 A JP4265181 A JP 4265181A JP 4265181 A JP4265181 A JP 4265181A JP S57157163 A JPS57157163 A JP S57157163A
- Authority
- JP
- Japan
- Prior art keywords
- cable
- withstand voltage
- breakdown
- thermal
- loss
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/1272—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Relating To Insulation (AREA)
Abstract
PURPOSE:To correctly evaluate breakdown due to an electric limit by checking rise in the temperature and thermal breakdown due to the loss of a dielectric with cooling of a UHV cable at a test for withstand voltage or breakdown thereof. CONSTITUTION:When a single-core 2,000mm.<2>OF cable is used for UHV 1,100kV with a low loss synthetic paper employed for an insulator to raise the power transmission efficiency, a thermal stability is attained at a Tc=38 deg.C in the normaloperation. But when subjected to a withstand voltage test at a voltage to ground of 1,270kV, Tc=164 deg.C is given and a thermal breakdown occurs with a sharp increase in the dielectric loss. To preent this, oil of an OF cable hydraulic tank 11 is cooled through a heat exchanger 10 and circulated through a conductor 2 in the route of a refrigerant inlet 7, terminal bushing 5, conductor oil channel 1, a terminal bushing 5 and a refrigerant outlet 8 to cool it 2. This checks the cable from reaching the het range of 150-200 deg.C allowing a thermal breakdown thereby enabling a withstand voltage test to be conducted under a thermally stable condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4265181A JPS57157163A (en) | 1981-03-24 | 1981-03-24 | Testing method for power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4265181A JPS57157163A (en) | 1981-03-24 | 1981-03-24 | Testing method for power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57157163A true JPS57157163A (en) | 1982-09-28 |
Family
ID=12641906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4265181A Pending JPS57157163A (en) | 1981-03-24 | 1981-03-24 | Testing method for power cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57157163A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113777437A (en) * | 2021-11-15 | 2021-12-10 | 中国电力科学研究院有限公司 | System and method for testing extra-high voltage direct current wall bushing |
-
1981
- 1981-03-24 JP JP4265181A patent/JPS57157163A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113777437A (en) * | 2021-11-15 | 2021-12-10 | 中国电力科学研究院有限公司 | System and method for testing extra-high voltage direct current wall bushing |
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