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Single-phase electric energy mutual-inductor

A technology of transformers and voltage sensors, which is applied to instruments, measuring electrical variables, and measuring current/voltage. Installation steps, high accuracy effect

Inactive Publication Date: 2008-05-21
安徽艺展电气设备有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these measures cannot completely eliminate the impact of the voltage drop of the PT secondary circuit on the energy metering, and some measures also reduce the reliability of the system and cause potential safety hazards in the metering system.
[0005] Since PT and CT are required to be able to output higher power, it is difficult to improve the accuracy level of measuring transformers
In addition, with the improvement of the insulation level, the weight and volume of the electromagnetic transformer increase geometrically. Due to the need for a large amount of ferromagnetic materials, the cost also increases geometrically. Due to the use of oil-filled or gas insulation, there is a danger of oil leakage and explosion.

Method used

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Embodiment Construction

[0015] The single-phase power transformer designed by the present invention is described in detail as follows in conjunction with accompanying drawings and embodiments:

[0016] The overall structure of the present invention is shown in Figure 1, which consists of a primary terminal 11, a high-voltage sensing head module 12, an insulator 13, and a base 14; wherein, the insulator 13 is made of a silicone rubber sleeve, filled with an insulating medium, and embedded with optical fibers and The capacitive voltage divider and the insulator realize safe insulation between the high-voltage sensing head module and the low-voltage side; the bottom of the insulator 13 is fixed to the base 14, and the optical fiber in the insulator 13 is connected to the optical fiber in the base through an optical fiber terminal; the high-voltage sensing head The module input end 12 is connected to the high voltage bus through the primary terminal 11; the high voltage sensing head module 12 is fixed on ...

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Abstract

The present invention relates to a single-phase power transformer, which belongs to the technical field of an electric energy measurement and a mutual inductor. The device comprises an once terminal, a high pressure sensing head module, an insulator and a basal seat; wherein, the high pressure sensing head module is connected with a high pressure generatrix through the once terminal; optical fibers are buried in the inductor; the optical fibers in the inductor and the optical fibers in the basal seat are connected with a optical cable through an optical fiber terminal; the high pressure sensing head module is fixed on the top end of the insulator; the output end of the insulator is connected with the optical fiber in the insulator. The present invention can increase the accuracy of an electric energy measuring system to the most extent.

Description

technical field [0001] The invention belongs to the technical field of electric energy metering and transformers, in particular to a structural design of a hybrid electronic transformer with electric energy metering function. Background technique [0002] In the production of power system, electric energy is its final product, and the measurement of electric energy is extremely important. The electric energy metering device is a necessary tool for measuring electric energy, and an effective means for the power supply and consumption parties to settle the trade of electricity supply and consumption. Whether the electric energy metering device is accurate or not is directly related to the economic interests of both the electricity supply and the electricity consumer. [0003] The electric energy metering device is composed of a potential transformer (PT), a current transformer (CT) installed on site and an electric energy meter in the control room. Therefore, the error of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R11/06G01R19/00
Inventor 汪良明
Owner 安徽艺展电气设备有限公司
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