Relay protection device constant value online monitoring system and method thereof

Abstract

The invention relates to a relay protection device constant value online monitoring system and a method thereof. The relay protection device constant value online monitoring system includes a man-machine interface module, a constant value comparison module, a network communication module and a relay protection device; the man-machine interface module introduces a protection constant value comparison template and an offline constant value list of which format modification is forbidden and outputs the protection constant value comparison template and the offline constant value list to the constant value comparison module, so that the offline constant value list of which format modification is forbidden can be parsed; the network communication module calls a protection online constant value of the relay protection device and outputs the protection online constant value to the constant value comparison module; the constant value comparison module judges the consistency of a setting parameter in the parsed offline constant value list and the protection online constant value parameter through comparison according to the protection constant value comparison template, and outputs comparison results to the man-machine interface module; and the comparison results can be displayed in a visualized manner. According to the relay protection device constant value online monitoring system and the method thereof of the invention, the consistency of a offline constant value and an offline constant value of the relay protection device can be judged based on comparison through the constant value comparison module, and therefore, wrong setting caused by man-made factors can be avoided, and the efficiency of field manual check of the constant values of the relay protection device can be improved, and technical support can be provided for safe and reliable operation of a power system.

Description

technical field [0001] The invention relates to a secondary system control technology of a power grid in the field of electric power systems, in particular to an on-line monitoring system and method for a fixed value of a relay protection device. Background technique [0002] At present, microcomputer protection has become the mainstream technology. With the development of information technology, microcomputer protection devices have the possibility to realize many functions, such as main protection, backup distance, backup zero sequence and so on. As a system that responds to input conditions (voltage, current, or contact state), the actual application of the protection function depends largely on the settings selected for the protection device. The general protection device setting process is to use the short-circuit current calculation tool to calculate the short-circuit current in various ways through the setting calculation of the dispatching department, and issue a wri...

AI Technical Summary

Problems solved by technology

However, this technology needs to calculate the initial relay protection setting value for each calibration, which increases the complexity of the calibration system and reduces the calibration efficiency; The solution for automatic comparison of online setting parameters lacks the feasibility of engineering applications, and cannot realize the automatic verification of offline setting values ​​and online setting values

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