Flexible alternating current/direct current electronic transformer checking device based on mixed sampling

Abstract

The invention discloses a flexible alternating current / direct current electronic transformer checking device based on mixed sampling. The flexible alternating current / direct current electronic transformer checking device comprises a primary rising current circuit, a high-precision alternating current AD acquisition circuit, a high-precision direct current AD acquisition circuit, a standard transformer, an I / U converter, a main-control CPU module and a digital value acquisition module; an electronic transformer body to be checked is connected in series with the standard transformer and the primary rising current circuit sequentially through an optical fiber; the standard transformer is connected with the high-precision alternating current AD acquisition circuit; the primary rising current circuit is connected with the high-precision direct current AD acquisition circuit; the high-precision alternating current AD acquisition circuit and the high-precision direct current AD acquisition circuit are connected with the main-control CPU module; a merging unit is connected with the main-control CPU module through the digital value acquisition module; the main-control CPU module also sends synchronous signals to the high-precision alternating current AD acquisition circuit and the digital value acquisition module. Through the adoption of the device, alternating current and direct current checking of the transformer in a UPFC can be realized, the use is convenient, and the application prospect is excellent.

Description

technical field [0001] The invention belongs to the technical field of power electronics, and in particular relates to a flexible AC / DC electronic transformer calibration device based on mixed sampling. Background technique [0002] Flexible AC transmission technology is a new technology for flexible and rapid control of AC transmission formed by integrating power electronics technology, microprocessing and microelectronics technology, communication technology and control technology, which can enhance the stability of AC power grid and reduce the cost of power transmission. The technology improves transmission quality and efficiency by providing inductive or reactive power to the grid. [0003] Unified Power Flow Controller (UPFC) is a new generation of flexible AC power transmission device with the most powerful functions and the most superior characteristics, and it is also the most versatile FACTS device so far. Including all the capabilities of voltage regulation, serie...

AI Technical Summary

Problems solved by technology

[0006] The technical problem solved by the present invention is to overcome the problem that the existing open-loop test method to verify the electronic transformer in UPFC cannot really complete the verification work, and cannot be compatible with the verification work of AC and DC electronic transformers

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