Double-channel mutual calibration electronic current transformer based on air core coil

Abstract

The invention discloses a double-channel mutual calibration electronic current transformer based on air core coils. The double-channel calibration electronic current transformer comprises a first coilshell, a first air core coil, a second coil shell, a second air core coil, a remote module box and a remote module, the first air core coil is fixed in the first coil shell, the second air core coilis fixed in the second coil shell, the remote module is positioned in the remote module box, the remote module box comprises a data acquisition module, a data mutual calibration module and a communication module, the remote module acquires analog quantity voltage and current signals outputted by the two air core coils to perform mutual calibration, and results are transmitted to an in-station background system through the communication module and analyzed. The transformer has the advantages of advanced technology, high accuracy and reliability and the like and can meet high-reliability requirements of digital measurement gateway trade settlement.

Description

technical field [0001] The invention relates to a dual-channel mutual verification electronic current transformer based on an air-core coil, and belongs to the technical field of intelligent application of electronic current transformers. Background technique [0002] In 2010, in order to accelerate the pace of smart grid construction, the State Grid Corporation launched the "Four Guarantees and One Striving" project for smart substations. Smart substations such as the 220kV substation in Xijing, Jiangsu, the 110kV substation in Yongchang, Sichuan, and the 750kV substation in Yan'an were all used for the first time in China. Electronic transformer. In January 2012, State Grid Corporation proposed to build a new generation of smart substations. As of the end of September 2013, State Grid had built 656 smart substations and renovated 274 smart substations. In 2014, State Grid Corporation launched 50 new-generation smart substation expansion demonstration projects. In 2016, ...

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Problems solved by technology

[0003] At present, electronic transformers are rarely used for electricity trade settlement in China. The main reason is that there are still certain errors in the operation of electronic transformers, and there is still a lack of an effective means to verify the operation errors.

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