Abnormal data screening method and system for digital acquisition device of power distribution switch

A collection device and power distribution switch technology, applied in the direction of measuring device, measuring power, fault location, etc., can solve problems such as screening, and achieve the effect of meeting accuracy and real-time requirements and guaranteeing effectiveness

Pending Publication Date: 2021-11-19
STATE GRID SHANGHAI ENERGY INTERCONNECTION RES INST CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention proposes a method and system for screening abnormal data of a digital acquisition device for power distribution switches to solve the problem of how to screen abnormal data of a digital acquisition device for primary and secondary fusion power distribution switches

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  • Abnormal data screening method and system for digital acquisition device of power distribution switch
  • Abnormal data screening method and system for digital acquisition device of power distribution switch
  • Abnormal data screening method and system for digital acquisition device of power distribution switch

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Embodiment Construction

[0059] Exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, however, the present invention may be embodied in many different forms and is not limited to the embodiments described herein, which are provided for the purpose of this thorough and complete disclosure 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 are not intended to limit the invention. In the drawings, the same elements / elements are given the same reference numerals.

[0060] Unless otherwise defined, terms (including scientific and technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it is to be understood that terms defined in commonly used dictionaries should be construed as having meanings consistent with the context in the related art, and should not be construed as idealized or overly formal...

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Abstract

The invention discloses an abnormal data screening method and system for a power distribution switch digital acquisition device. The method comprises steps of calculating an adjacent interpolation remainder error according to a current sliding data window where a target sampling value is located, and updating a judgment total frequency mark; when an adjacent interpolation remainder error is greater than or equal to a preset adjacent interpolation remainder error threshold value and the electrical quantity type corresponding to the target sampling value is not a zero-sequence component, updating an anomaly judgment frequency mark; when the total number of times flag is greater than or equal to a first preset number of times threshold and the anomaly judgment number of times flag is greater than or equal to a second preset number of times threshold, determining that the data type of the target sampling value is abnormal data. According to the method, the data type of the sampling data is judged based on the improved linear interpolation and the zero sequence waveform correlation coefficient, meanwhile, abnormity diagnosis positioning is carried out, accuracy and real-time performance requirements of field terminal equipment sampling can be met, and a guarantee can be provided for terminal equipment measurement and control, protection and effectiveness of feeder automation service data.

Description

technical field [0001] The invention relates to the technical field of primary and secondary fusion of power distribution equipment, and more particularly, to a method and system for screening abnormal data of a digital acquisition device of power distribution switches. Background technique [0002] The integration of primary and secondary is the inevitable trend of the future development of distribution switches and terminal equipment, which is characterized by "miniaturization, standardization, maintenance-free, and high reliability". Since 2017, when complete sets of power distribution primary and secondary integration equipment were quickly put into operation on a large scale in the State Grid Corporation's system, State Grid Corporation of China has tendered 10kV switchgear for primary and secondary integration equipment, accounting for more than 2 / 3 of the total. The proportion of sub-converged devices will continue to expand. With the digital transformation of distri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/08
CPCG01R31/088
Inventor 李玉凌李二霞张波杨红磊刘海涛亢超群何连杰吕广宪孙智涛樊勇华许保平周勐王利韩子龙吴殿亮
Owner STATE GRID SHANGHAI ENERGY INTERCONNECTION RES INST CO LTD
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