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Withstand voltage test method for cable line with single-phase shunt reactor

A technology of cable line and withstand voltage test, which is applied in the direction of instruments, measuring electricity, measuring electrical variables, etc., can solve the problem of high investment in test equipment, and achieve the effect of improving feasibility and reducing voltage level

Pending Publication Date: 2021-10-01
STATE GRID SHAANXI ELECTRIC POWER RES INST +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There are high requirements for the test site and hoisting environment, and the investment in the test equipment itself is also very high

Method used

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  • Withstand voltage test method for cable line with single-phase shunt reactor
  • Withstand voltage test method for cable line with single-phase shunt reactor
  • Withstand voltage test method for cable line with single-phase shunt reactor

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Embodiment Construction

[0027] In order to make the purpose, technical effects and technical solutions of the embodiments of the present invention clearer, the technical solutions of the present invention are clearly and completely described below in conjunction with the embodiments of the present invention; obviously, the described embodiments are part of the embodiments of the present invention. Based on the disclosed embodiments of the present invention, other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall all fall within the protection scope of the present invention.

[0028] see figure 1 with figure 2 , the embodiment of the present invention provides a cable line withstand voltage test method with a single-phase shunt reactor, the specific steps include:

[0029] Step 1. According to the engineering design plan, determine whether the power cable is equipped with a single-phase high-voltage shunt reactor during operation. If the cable line i...

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Abstract

The invention discloses a withstand voltage test method for a cable line with a single-phase shunt reactor, which adopts the single-phase shunt reactor in a support wiring mode and cable series resonance to carry out an alternating current withstand voltage test, and can adopt higher test voltage and longer test time. The feasibility of replacing a test reactor with three single-phase shunt reactors is greatly improved, the voltage level of the reactor is reduced, the requirement of the test on equipment is reduced, and the feasibility of the method is improved.

Description

technical field [0001] The invention belongs to the technical field of withstand voltage test, in particular to a method for withstand voltage test of a cable line with a single-phase shunt reactor. Background technique [0002] With the development of urban economy, urban land resources are becoming increasingly tense, and traditional high-voltage overhead lines have been difficult to meet the needs of current urban development. Power cables, with their small footprint, safety and reliability, account for an increasing proportion of urban power transmission systems. Due to the possible manufacturing defects of the cable, the processing defects of the cable joints, and the interference of other factors received during installation and operation, problems such as failures and short circuits may occur. It is very necessary to use the AC withstand voltage test to assess the insulation level of the cable before putting it into operation. [0003] At present, the AC withstand vo...

Claims

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Application Information

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IPC IPC(8): G01R31/12
CPCG01R31/1272
Inventor 王荆韩彦华吴经锋蒲路吴昊郭璨吉宏亮张璐杨鼎革王辰曦
Owner STATE GRID SHAANXI ELECTRIC POWER RES INST
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