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DSP relay protection control system based on small wave theory and its working method

A relay protection and control system technology, applied in the direction of emergency protection circuit devices, electrical components, etc., can solve problems such as difficulty in meeting performance requirements, achieve the goal of overcoming technical processing speed limitations, reducing the probability of accidents such as shutdowns, and enhancing stability Effect

Inactive Publication Date: 2007-04-11
TIANJIN UNIVERSITY OF TECHNOLOGY
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the traditional relay protection control system has been difficult to meet the performance requirements of modern industry, so it is necessary to invent a new type of control system and its working method, especially an adaptable relay protection control system and its working method

Method used

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  • DSP relay protection control system based on small wave theory and its working method
  • DSP relay protection control system based on small wave theory and its working method
  • DSP relay protection control system based on small wave theory and its working method

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Embodiment

[0024] Embodiment: A DSP relay protection control system based on wavelet theory (see Figure 1), which is characterized in that it is composed of a processor module, an analog data acquisition module, a switch input and output interface module, a communication module, a power supply module, and The keyboard display module is composed of six parts; the input end of the analog data acquisition module is connected to an external voltage transformer and current transformer, and its output end is connected to the input end of the central data processing circuit; After isolation, the photoelectric coupler is connected to the general I / O port of the DSP, and the switching value is led out from the general I / O port through the photocoupler, connected to the outlet and electrical appliances; the output terminal of the power module is connected to the central data processor module, which is DSP Chip power supply; the output end of the processor module is respectively connected to the input ...

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Abstract

This invention relates to a DSP relay protection control system based on the wavelet theory characterizing that it is composed of a processor module, an analog volume data collection module, an in / out interface module, a communication module, a supply module and a keyboard display module, the working method includes: signal collection, wavelet analysis, sending out signals of switch volume and relay protection operation, which is advantaged that 1, utilizing the high speed data computation ability and accurate data process ability of DSP to carry out double signal control to the executing devices of relay protection device, 2, the entire control system has good adjusting performance to enhance the stability of power net, 3, utilizing the wavelet theory to quickly test abrupt signals of current or voltage at the instant time of a fault, 4, the hardware is simple and accuracy for real time control is high.

Description

[0001] (1) Technical Field: The present invention belongs to the technical field of power system relay protection control, in particular to a DSP relay protection control system based on wavelet theory and its working method. (2) Background technology: [0002] The main task of power system relay protection is to selectively remove faulty lines in the shortest possible time when the power system fails. Generally, the relay protection device is composed of three parts: measurement and comparison component, logic judgment component and execution output component. At present, in order to adapt to the fast-developing electric power industry, so that the power grid can provide users with high-quality electric energy continuously, safely and reliably, digital relay protection control technology is increasingly applied in actual operation, thereby improving the relay All aspects of the performance of the protection device. [0003] In relay protection, the most critical link is the extrac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H7/26
Inventor 周雪松李显冰马幼捷王新志张继东顾亚琴
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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