A primary vibration detection device and method of a pillar type electronic current transformer

Abstract

The invention provides a strut type electronic current transformer one-time vibration detecting device which comprises a strut type electronic current transformer and a contact monitoring circuit. The strut type electronic current transformer and the contact monitoring circuit are respectively connected with a breaker. The contact monitoring circuit is connected with an industrial personal computer through a collecting card. The strut type electronic current transformer is connected with the industrial personal computer through a merging unit and a photoelectric converter in sequence. The invention further provides a method based on the detecting device. Opening operation, closing operation and opening-closing-opening operation are carried out on the breaker in sequence, and vibration output verification is carried out on the current transformer according to the industrial personal computer. Compared with the prior art, according to the strut type electronic current transformer one-time vibration detecting device and method, vibration encountered by the electronic current transformed in an intelligent substation can be simulated, therefore, the current transformed is verified, relay protection malfunctions are prevented from being caused by error output of the electronic current transformer, and safe operating of a power grid is guaranteed.

Description

technical field [0001] The invention relates to a vibration detection device and method of a current transformer, in particular to a primary vibration detection device and method of a pillar type electronic current transformer. Background technique [0002] Electronic current transformers are important devices used to detect electrical parameters in power systems and various input or output variable frequency power, and provide reliable guarantees for performance testing and energy efficiency evaluation of electrical equipment such as motors, frequency converters, and special transformers. In general, electronic current transformers may encounter two types of primary component vibration during use: [0003] ①: When a short circuit occurs in the power system, the electromotive force of the short-term current causes the vibration caused by the vibration of the wire, and the electronic transformer affected by the vibration should be able to operate correctly; [0004] ②: When ...

AI Technical Summary

Problems solved by technology

Certain vibrations may cause deformation and relative displacement inside the sensing unit of the electronic current transformer, resulting in changes in measurement accuracy; in severe cases, the abnormal output of the electronic transformer affected by the vibration may cause the power grid protection device to malfunction. Misoperation, thus threatening the safety of the power grid

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