Single-phase electric energy mutual-inductor
A technology of transformers and voltage sensors, applied in instruments, measuring electrical variables, measuring current/voltage, etc., can solve problems such as hidden dangers of metering system safety, reducing system reliability, oil leakage and explosion, etc., to save installation steps, excellent performance Insulation design, high accuracy and high performance
Inactive Publication Date: 2009-10-14
安徽艺展电气设备有限公司
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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.
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[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] Overall structure of the present invention is as figure 1 As shown, it is composed of a primary terminal 11, a high-voltage sensing head module 12, an insulator 13, and a base 14; among them, the insulator 13 is made of a silicone rubber sleeve, filled with an insulating medium, embedded in an optical fiber and a capacitor voltage divider, and the insulator realizes high voltage. Safety insulation between the 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 and the optical fiber in the base are connected to the optical cable through the optical fiber terminal; the input end 12 of the high-voltage sensing head module passes through the primary terminal 11 Connected to the high-voltage bus; the high-voltage sen...
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The invention relates to a single-phase electric energy transformer, which belongs to the field of electric energy measurement and transformer technology; the device includes: a primary terminal, a high-voltage sensing head module, an insulator, and a base; wherein, the high-voltage sensing head module is connected to a high-voltage bus through the primary terminal; the insulator An optical fiber is embedded in the insulator, and the optical fiber in the insulator is connected to the optical fiber cable through the optical fiber terminal; the high-voltage sensing head module is fixed on the top of the insulator, and its output end is connected to the optical fiber in the insulator. The invention can maximize the accuracy level of the electric energy metering system.
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...
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IPC IPC(8): G01R11/06G01R19/00
Inventor 汪良明
Owner 安徽艺展电气设备有限公司