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A super telecontrol method integrating small wave recording

A super, telecontrol technology, applied to the phase angle between voltage and current, instruments, measuring devices, etc., can solve the problem of low real-time performance of data waiting for uploading, improve efficiency and real-time performance, and reduce the amount of uploaded data Effect

Active Publication Date: 2019-03-08
STATE GRID FUJIAN ELECTRIC POWER CO LTD +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And once a fault occurs, the protection device involved in the system will start recording, generating a large number of recording files and a large amount of data waiting to be uploaded. The real-time performance is not high

Method used

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  • A super telecontrol method integrating small wave recording
  • A super telecontrol method integrating small wave recording
  • A super telecontrol method integrating small wave recording

Examples

Experimental program
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Effect test

Embodiment 1

[0036] A super telecontrol method integrating small wave recording, (1) preprocessing the wave recording data, the expression of the current when the power system fails is:

[0037]

[0038] in

[0039] i: instantaneous value of short circuit current

[0040] I m : Amplitude of fault current steady-state component

[0041] I m [0]: Amplitude of current steady-state component before fault

[0042] α: phase angle at fault

[0043] System phase angle after fault

[0044] System phase angle before failure

[0045] τ: time constant

[0046] in

[0047] is the steady-state component of the short-circuit current; is the DC component of the short-circuit current; τ is the DC decay time constant. Therefore, the above formula can be written as

[0048] i=I m sin(ωt+α1)+Id*e -t / τ

[0049] in

[0050]

[0051]

[0052] The rest of the parameters remain unchanged.

[0053] First, calculate the AC steady-state component in the above formula:

[0054] The cur...

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Abstract

The invention discloses a super telemechanical technology of integrated small recording. The method, through pre-processing a fault small recording file, greatly reduces uploading amount of the small recording file. The method conducts telemetering on small recording files, five-remote information, PMU information of a transformer station, which increases real-time of the telemechanical technology.

Description

technical field [0001] The invention relates to a substation telecontrol information technology, in particular to a super telecontrol method integrating small wave recording. Background technique [0002] With the gradual development of the construction of digital substations, the power system has higher and higher requirements for the comprehensive automation of substations. Digital substations are completely digital substations that use the IEC 61850 communication protocol as the communication standard for information collection, transmission, processing and output. Before the concept of digital substation was put forward, the fault output and recording in the substation were basically carried out by the built-in printer of the fault recording and protection device, which was not only inconvenient to consult, but also difficult to store for a long time, and the data could not be centrally analyzed and processed. It is difficult to meet the requirements of power grid dispat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08C19/00G01R19/00G01R25/00G01R31/00
CPCG01R19/0092G01R25/00G01R31/00G08C19/00
Inventor 黄彦林鸿伟黄劼邓勇林静怀陆榛戴太文李涛肖新华罗立锰
Owner STATE GRID FUJIAN ELECTRIC POWER CO LTD
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