Combined electronic transformer

A technology of electronic transformers and current transformers, which is applied in the direction of inductors, circuits, transformers, etc., can solve the problems of complex sampling and multi-phase synchronous sampling, and achieve the effect of realizing synchronous sampling and reducing manufacturing costs

Active Publication Date: 2010-05-12
深圳市联创知识产权服务中心
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  • Abstract
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Problems solved by technology

[0004] In order to solve the problems in the prior art, the present invention provides a combined electronic transformer, which solves the problems in the prior art that the sampling is complex and cannot be multi-phase synchronous sampling

Method used

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  • Combined electronic transformer
  • Combined electronic transformer

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with accompanying drawing.

[0016] Such as figure 1 As shown, a combined electronic transformer includes a main control unit 1, a voltage transformer, a current transformer, a power supply, and an A / D analog-to-digital conversion module 7; the voltage transformer and the current transformer are respectively connected to the A / D Analog-to-digital conversion module 7; the main control unit 1 is equipped with a hardware simultaneous sampling signal module 4, a high-pass filter HPF 5, a digital integration module 6 and a digital signal output port; the hardware simultaneous sampling signal module 4 collects each phase current at the same time , and the sampled value of the voltage and perform analog-to-digital conversion through the A / D analog-to-digital conversion module 7 .

[0017] The current transformer is an air-core coil current transformer; the current transformer is input through a differential ...

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Abstract

The invention relates to the field of intelligent transformer substation sampling, in particular to a combined electronic transformer, which comprises a main control unit, a voltage transformer, a current transformer, a power supply and an A / D (analogue-to-digital) conversion module, wherein the voltage transformer and the current transformer are connected with the A / D (analogue-to-digital) conversion module respectively; the inside of the main control unit is provided with a hardware simultaneous signal sampling module, a high pass filter (HPF), a digital integral module, and a digital signal output port; and the hardware simultaneous signal sampling module acquires the sampling values of each phase of current and voltage at the same time and performs analogue-to-digital conversion by the A / D (analogue-to-digital) conversion module. The combined electronic transformer has the advantages that: by combining the analogue quantities of the voltage, the current and the like in the same electronic transformer, the transformer realizes the synchronous sampling of digitalized sampling signals and reduces the manufacturing cost of a combined transformer.

Description

technical field [0001] The invention relates to the field of intelligent substation sampling, in particular to a combined electronic transformer. Background technique [0002] Electronic transformer or optical transformer is one of the key technologies of smart substations. It completely replaces conventional electromagnetic transformers. The output of electronic transformers is no longer current and voltage analog signals, but meets IEC61850-9 and IEC60044- 7 / 8 standard digital signals, these digital signals are transmitted in optical fibers instead of cables, this high-speed transmission network is the process bus, and the transmitted sampling data can be shared by all IEDs in the system. [0003] The key technologies of electronic transformers or optical transformers are unconventional current and voltage sensors, and there are solutions based on various principles; the second is the synchronization of sampling data, which is generally solved by merging units; the third i...

Claims

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Application Information

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IPC IPC(8): H01F38/34H02B1/24
Inventor 郭鸿
Owner 深圳市联创知识产权服务中心
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