Method for guaranteeing reliability of memory data of relay protection device

Abstract

The invention provides a method for guaranteeing the reliability of memory data of a relay protection device, which comprises: dividing the memory data of the device into a program code area, a runtime constant area, a first action state flag variable area, a second action state flag variable area and a data variable area, and opening up independent memory spaces in the memory for respective storage. During the running period of the device, program codes and running period constant memory data are subjected to cyclic verification, action state flag variable data are subjected to redundant storage and mutual verification, structural body variable pointers in running period constants are subjected to feature code anchoring matching verification, and when any verification measure finds that the memory data have errors, the protection function is locked, the memory data of the device is re-initialized, and, when the memory data is found to be abnormal during initialization, the protection function is directly locked, and an alarm is given. Through self-inspection of the memory, errors are found, and an error correction function of abnormal data is realized through resetting initialization, so that the reliability of relay protection memory data is greatly improved.

Description

technical field [0001] The invention relates to the technical field of relay protection, in particular to a method for ensuring the reliability of memory data of a relay protection device. Background technique [0002] The relay protection device is the first line of defense of the power system security defense system. When the power system fails, it can quickly isolate the faulty equipment within the smallest range, which plays a very important role in ensuring the safe operation of the power system. However, the harm caused by the incorrect action of the relay protection is also huge, so the reliability is the most important requirement of the relay protection device. [0003] The relay protection device is installed inside the substation or power plant. In the long-term uninterrupted operation in the harsh electromagnetic environment, the device is easily disturbed, and the memory data is displaced, causing the program to execute and run, resulting in incorrect protection...

AI Technical Summary

Problems solved by technology

However, the incorrect action of relay protection will cause great harm to the system, so reliability is the most important requirement for relay protection devices

[0003] The relay protection device is installed inside the substation or power plant. During the long-term uninterrupted operation in the harsh electromagnetic environment, the device is susceptible to interference, and the memory data will be displaced, which will cause the program to execute and run, resulting in incorrect protection action.

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