Outdoor three-phase integrated current transformer with stress cone and semiconductor transistor

Abstract

The invention discloses an outdoor three-phase integrated current transformer with a stress cone and a semiconductor transistor. The outdoor three-phase integrated current transformer with the stresscone and the semiconductor transistor comprises a zero-sequence wire package, can acquire the three-phase current and the zero-sequence current, and overcomes the technical defects that a conventionalcurrent transformer does not have a zero-sequence acquisition device and is required to splice three phase-sequence transformers when acquiring the zero-sequence current, thereby causing inconvenience and an increased measurement error. The outdoor three-phase integrated current transformer uses the concept that a weak part is independently designed, that is, the stress cone is introduced. The main insulation of the weakest part likely to be broken down between a primary conductor (three-phase electric wire to be detected) and the wire package is carried out by the stress cone, thereby solving the withstand voltage problem between a primary high-voltage component and the secondary wire package. The outdoor three-phase integrated current transformer is provided with a semi-conducting tube,equalizes an electric field through the semi-conducting tube and reduces partial discharge.

Description

Technical field [0001] The invention relates to the field of power electronics, in particular to an outdoor three-phase integrated current transformer with a stress cone and a semiconductor tube. Background technique [0002] "LSYW-10 current transformer" is a newly designed current transformer. The current transformer is suitable for AC power system with rated voltage 10KV and rated frequency 50Hz. It is dedicated to W32-10 pole and used with switch. , LSYW-10 current transformer can measure or protect the system current by collecting phase sequence and zero sequence current. The transformer has low manufacturing cost and high electrical performance, and can meet the requirements of China's current transformer national standard "GB20840-2010". [0003] At present, W32-10 pole-mounted current transformers usually have only phase-sequence transformers and no zero-sequence transformers. Three phase-sequence transformers need to be spliced ​​together when collecting zero-sequence cur...

AI Technical Summary

Problems solved by technology

[0003] At present, W32-10 current transformers for pole-mounted switches usually only have phase-sequence transformers and no zero-sequence transformers. When collecting zero-sequence currents, three phase-sequence transformers need to be spliced ​​together. increase the measurement error

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