System for relay protecting controlling of combined DSP tech. with quick Fu surname calculating

A Fourier algorithm and control system technology, applied in the direction of emergency protection circuit devices, electrical components, etc., can solve problems such as difficult to meet performance requirements, achieve the effect of reducing the probability of accidents such as production stoppages, high real-time control accuracy, and high precision

Inactive Publication Date: 2006-06-14
TIANJIN UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

Therefore, the traditional relay protection control system has been difficult to meet the performance requirements of modern

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  • System for relay protecting controlling of combined DSP tech. with quick Fu surname calculating
  • System for relay protecting controlling of combined DSP tech. with quick Fu surname calculating
  • System for relay protecting controlling of combined DSP tech. with quick Fu surname calculating

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[0015] Example: A relay protection control system combining DSP technology and fast Fourier algorithm (see figure 1 ), which is characterized in that it is composed of six parts: processor module, analog data acquisition module, binary input / output interface module, communication module, power supply module and keyboard display module; the input terminal of the analog data acquisition module is connected The output terminal of external voltage transformer and current transformer is connected to the input terminal of the central data processing circuit; the input and output interface module is isolated by the photocoupler and connected to the general I / O port of the DSP. The I / O port is led out through the photoelectric coupler to connect to outlets and electrical appliances; the output end of the power module is connected to the central data processor module to supply power to the DSP chip; the output end of the central processing module is respectively connected to the input of ...

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Abstract

This invention relates to a relay protection control system combining the DSP technology and the quick Fourier algorithm advantaged: 1, utilizing the ability of high speed data computation and accurate data process ability of DSP to carry out double signal control to the action executing device of the relay protection to increase its reliability and quickness of the action, 2, the entire control system has fine adjusting performance to increase the stability of the net and reduce the probability of stopping production brought with error or refusing action of the relay protection, 3, applying the improved Fourier algorithm to simplify the computation of harmonic analysis, 4, simple hardware circuit and accurate real time control.

Description

(1) Technical field: [0001] The invention belongs to the technical field of relay protection control of electric power system, in particular to a relay protection control system combining DSP technology and fast Fourier algorithm. (two) background technology: [0002] The main task of power system relay protection is to selectively cut off the fault line in the shortest possible time when the power system fails. A general relay protection device is composed of three parts: a measurement comparison element, a logic judgment element and an execution output element. At present, in order to adapt to the rapid development of the electric power industry, so that the power grid can continuously, safely and reliably provide users with high-quality electric energy, digital relay protection control technology is more and more used in actual operations, thereby improving the relay protection. All aspects of performance of the protective device. Most of these control technologies are ...

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Application Information

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IPC IPC(8): H02H7/22H02H7/26
Inventor 周雪松马幼捷徐晓宁向龙瑞刘富永弓晋霞张智勇侯明
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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