Detecting system for relay protection fault and oscillation based on double CPU and its distinguishing method

A relay protection and detection system technology, applied in the direction of memory systems, emergency protection circuit devices, electrical components, etc., can solve the problem of small amount of data, prevent misoperation, meet real-time requirements, reduce time lag and accuracy defects Effect
CN1945913AInactive Publication Date: 2007-04-11TIANJIN UNIVERSITY OF TECHNOLOGY
0 Cites 4 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
TIANJIN UNIVERSITY OF TECHNOLOGY
Publication Date
2007-04-11
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

This invention relates to a relay fault protection and oscillation test system based on double CPU composed of a data collecting module, an A / D conversion module, a DSP signal process module, a switch control module and a display module, the differentiation method for oscillation and fault is to compute modulus value and analyze and compare the measurement values, which can differentiate fault during oscillation so as to avoid error operation of relay protection devices during oscillation.
Need to check novelty before this filing date? Find Prior Art

Description

(1) Technical field:

[0001] The invention belongs to the field of relay protection devices for power systems, in particular to a dual-CPU-based relay protection fault and oscillation detection system capable of correctly distinguishing oscillation and fault states to ensure the correct operation of the relay protection device and a method for distinguishing the same. (two) background technology:

[0002] The relay protection device is an important part of the power system and one of the important measures to ensure the safe operation of the power system. In the modern power system, it is an indispensable part to maintain the normal operation of the system. Its correct action is of great significance to the safe operation of power equipment and the stability of the power grid. Power system oscillation refers to the phenomenon of large-scale periodic changes in the power angle between parallel-operated power systems or power plants, which belongs to an abnormal working conditi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More