Electronic voltage transformer

Abstract

The invention relates to an electronic voltage transformer, which is used in the power industry. The electronic voltage transformer consists of a connection terminal, a lifting ring, a capacitive voltage divider, a supporting seat, a grounding terminal, a connecting piece, a pull box and a collector, wherein the capacitive voltage divider is fixed on the supporting seat and provided with the lifting ring and the connection terminal; the grounding terminal is connected with the capacitive voltage divider and arranged below the supporting seat; the connecting piece is fixed on the supporting seat and connected with the pull box; and the collector is arranged in the pull box. An umbrella skirt of an insulated sleeve of the capacitive voltage divider adopts a structural form which is formed by one-step overall injection molding of high-temperature vulcanizing silicone rubber, so that the phenomenon of easy cracking at the joint of the umbrella skirt is avoided, and pollution flashover resistance and galvanic corrosion resistance are enhanced; an optical fiber is used for transmitting, so that a transmission frequency band is wide; a lower connecting end is provided with a reinforcing rib, so that the capacitive voltage divider has high stability; and the supporting seat has a splayed-shape structure, so that the wind resistance and stabilizing capability of equipment are enhanced.

Description

technical field [0001] The invention relates to a voltage transformer used in the electric power industry, in particular to an electronic voltage transformer. Background technique [0002] After searching relevant patent documents, no voltage transformer with the same structure as the present invention has been found. The power industry generally needs to use voltage transformers when measuring the voltage in the system or performing relay protection. Existing voltage transformers are generally electromagnetic voltage transformers. This type of transformer has a complex structure, a large volume, and a narrow frequency band. At the same time, because it uses electromagnetic induction, it needs to have an iron core, so magnetic saturation occurs. Although the existing electronic voltage transformer overcomes the defect of using iron core in the traditional electromagnetic transformer, so that its volume is significantly reduced and its weight is light, but because of its str...

AI Technical Summary

Problems solved by technology

The existing voltage transformers are generally electromagnetic voltage transformers. Due to their complex structure, large volume and narrow frequency band, and because they need to have iron cores for electromagnetic induction, magnetic saturation will occur.

Although the existing electronic voltage transformer overcomes the defect of using iron core in the traditional electromagnetic transformer, so that its volume is significantly reduced and its weight is light, but because of its structure, there are many deficiencies in its shielding and anti-interference. , so it is necessary to improve the existing electronic voltage transformers to better meet the actual needs of production

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