Combined three-phase common-body electronic current and voltage transformer

Abstract

The invention relates to a combined three-phase common-body electronic current and voltage transformer. The transformer is composed of a shell, a primary conducting rod, a current coil shielding cylinder, a current coil, a shielding cylinder, a grounding electrode, a basin-type insulator, an explosion-proof sheet and the like. An upper positioning flange is fixedly installed on an upper half partof the shell. The primary conducting rod is connected with a conductor of the basin-type insulator. A current coil shielding cylinder is fixedly arranged on a lower positioning flange. A current coilis arranged at a periphery of the current coil shielding cylinder. The shielding cylinder is arranged at the periphery of the primary conducting rod, one end of the shielding cylinder is connected with the primary conducting rod, and the other end is insulated from the primary conducting rod. Because a current transformer and a voltage transformer are combined into one body, a whole machine is compact in structure and small in size; because the shell, the shielding cylinder, the primary conducting rod and the electrode are made of aluminum alloy with a low expansion coefficient, and each portis designed to be arc-shaped, point discharge is reduced, and an internal electric field is uniform.

Description

technical field [0001] The invention relates to an electronic transformer used in the electric power industry, in particular to a combined three-phase communal electronic current and voltage transformer. Background technique [0002] Existing high-voltage transformers are mainly divided into voltage transformers and current transformers. High-voltage current transformers are further divided into oil-immersed current transformers and sulfur hexafluoride current transformers. Due to structural reasons, oil-immersed current transformers and sulfur hexafluoride current transformers generally have iron cores, and electromagnetic induction is used to convert data. This type of current transformers uses iron cores, so magnetic saturation occurs. The electromagnetic induction ability is obviously reduced, and the volume is large, so that the overall weight is obviously heavier. Although the existing electronic current transformers and voltage transformers overcome the defects of l...

AI Technical Summary

Problems solved by technology

An electronic current and voltage transformer is currently disclosed. Although this structure significantly reduces the overall weight, due to the structure, it is difficult to obtain a uniform distribution of the internal electric field, and its shielding effect and anti-interference ability are poor. , it is difficult to meet the requirements of high-performance testing, so it is necessary to improve the existing combined electronic current and voltage transformers to improve the use effect of the equipment

Images