Three-phase integrated electronic transformer

An electronic transformer and integrated electronic technology, applied in the direction of instruments, measuring electrical variables, voltage/current isolation, etc., can solve the problems of complex wiring, high cost, bulky switchgear, etc., to achieve a large measurement range, easy to use and maintain. , the effect of reducing the installation size

Inactive Publication Date: 2013-05-01
BEIJING CREATIVE DISTRIBUTION AUTOMATION
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Problems solved by technology

[0002] In the current and voltage measurement devices commonly used in power systems, voltage and current sensors are widely used as the main parameter measurement methods of power grid parameters. With the continuous enrichment of protection functions and the continuous improvement of reliability requirements, power systems no longer rely solely on current Transformers are used to provide measurement and protection signals. Measurement and prot

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Embodiment Construction

[0024] Embodiments of the present invention are described in further detail below in conjunction with the accompanying drawings:

[0025] Such as Figure 1 to Figure 2 As shown, according to the embodiment of the three-phase integrated electronic transformer provided by the present invention, it includes a main body 1 and a signal conversion box 2 connected with the main body 1, and a three-phase measurement assembly 3 is cast in the main body, and the three-phase The phase measurement components 3 all include a voltage sensor and a current sensor, the voltage sensor adopts a capacitive voltage sensor, the current sensor adopts a Rogowski coil 31, a signal conversion module 21 is installed in the signal conversion box 2, and the three-phase measurement The component 3 is connected with the signal conversion module 21 .

[0026] see Figure 1 to Figure 2 , according to the embodiment of the three-phase integrated electronic transformer provided by the present invention, the v...

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Abstract

The invention relates to a three-phase integrated electronic transformer, comprising a main body and a signal converter box connected with the main body, wherein a three-phase measuring component is poured in the main body, the three-phase measuring component comprises a voltage sensor and a current sensor, and a signal conversion module is mounted in the signal converter box. The three-phase integrated electronic transformer provided by the invention adopts an integral structure, is integrated with the functions of measuring three-phase current, three-phase voltage, zero-sequence current and zero-sequence voltage, simple in structure, convenient to mount and is simple to maintain; signal output adopts a small-signal current ring mode and is strong in anti-jamming capability; and the voltage sensor and the current sensor respectively adopt a Rogowski coil and a capacitive voltage sensor, the hysteresis effect and saturation phenomenon of a traditional electromagnetic transformer are avoided, and the high-precision measurement demand can be met.

Description

technical field [0001] The invention relates to a three-phase integrated electronic transformer. Background technique [0002] In the current and voltage measurement devices commonly used in power systems, voltage and current sensors are widely used as the main parameter measurement methods of power grid parameters. With the continuous enrichment of protection functions and the continuous improvement of reliability requirements, power systems no longer rely solely on current Transformers are used to provide measurement and protection signals. Measurement and protection devices need to collect multiple measurement signals such as three-phase current, three-phase voltage, zero-sequence current, and zero-sequence voltage. The current common solution is to use voltage transformers and current transformers respectively. Switches, zero-sequence voltage transformers, and zero-sequence current transformers measure their respective power signals, which makes the switchgear bulky, com...

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Application Information

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IPC IPC(8): G01R15/18G01R19/00
Inventor 韩玉玺韩志刚顾翼南颜睿叶祖标陈明洁汪大杰
Owner BEIJING CREATIVE DISTRIBUTION AUTOMATION
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