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Method for verifying transient characteristic parameters of non-traditional current transformer

A technology of current transformers and transient characteristics, which is applied in the direction of instruments, measuring electrical variables, measuring devices, etc., and can solve the problems of non-traditional current transformer transient characteristic parameter verification, etc.

Pending Publication Date: 2020-04-17
CHINA ELECTRIC POWER RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The technical solution of the present invention provides a method and system for verifying the transient characteristic parameters of non-traditional current transformers, so as to solve the problem of how to verify the transient characteristic parameters of non-traditional current transformers

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  • Method for verifying transient characteristic parameters of non-traditional current transformer
  • Method for verifying transient characteristic parameters of non-traditional current transformer
  • Method for verifying transient characteristic parameters of non-traditional current transformer

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Embodiment Construction

[0037] Exemplary embodiments of the present invention will now be described with reference to the drawings; however, the present invention may be embodied in many different forms and are not limited to the embodiments described herein, which are provided for the purpose of exhaustively and completely disclosing the present invention. invention and fully convey the scope of the invention to those skilled in the art. The terms used in the exemplary embodiments shown in the drawings do not limit the present invention. In the figures, the same units / elements are given the same reference numerals.

[0038] Unless otherwise specified, the terms (including scientific and technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it can be understood that terms defined by commonly used dictionaries should be understood to have consistent meanings in the context of their related fields, and should not be understood as idealized or over...

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Abstract

The invention discloses a method for verifying transient characteristic parameters of a non-traditional current transformer. The method comprises the following steps: triggering a to-be-detected non-traditional current transformer and a standard transient current transformer by using a synthesized transient current source trigger signal, outputting a first current sample through the standard transient current transformer, and outputting a second current sample through the non-traditional current transformer; performing time marking on the first current sample and the second current sample; andaccording to the time stamp, analyzing the first current sample and the second current sample obtained at the same time to obtain transient characteristic parameters of the non-traditional current transformer.

Description

technical field [0001] The invention relates to the technical field of electrical measurement, and more specifically, to a method and system for verifying transient characteristic parameters of non-traditional current transformers. Background technique [0002] In UHV and EHV power systems, the attenuation time of non-periodic component of short-circuit current is longer, and the required short-circuit fault removal time is very short. Non-traditional current transformers are widely used in the protection current measurement of special and ultra-high voltage power systems due to their advantages such as no iron core, no magnetic saturation phenomenon, fast response speed, and low insulation cost. The transient protection level of non-traditional current transformers is TPE level, and the national standard GB / T 20840.8-2007 "Electronic Current Transformer" defines TPE level as: under the exact limit conditions, rated primary time constant and rated duty cycle The maximum pea...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/02
CPCG01R35/02
Inventor 童悦叶国雄黄华刘翔刘彬熊俊军邓小聘牧晓菁
Owner CHINA ELECTRIC POWER RES INST