Research And Application Based On Relay Big Data

The relay protection device is one of the essential equipment to maintain the safe and stable operation of power system,the correct setting of relay protection,intelligent checking,and improving the management level of relay protection is an important means to ensure safe and stable operation of power system.However,the traditional setting calculation is mainly based on off-line setting calculation software.and sets the fixed value list into the circulation system for verification.The work of audit about fixed value is still need to manually check.At present with the expansion of the scale of power grid and the increasing protection equipment,more fixed value items,more jobs for protection workers and the the lack of experience of new workers are likely to lead to a leak or mistake in the calculation of audit.In particular,the individual fixed value in the value order is pure manual modification which will causes more risk.This paper combines the national network of "six unification",presents a hierarchical classification method for relay protection of 220kV and above,mines the setting value relationship of line protection of 220kV and above,which is called static attribute value.It avoids the current check method which only checks from the operation modes of the ability to adapt,thus realizes the value list of intelligent precision check.Secondly,using the Tableau tool to analyze the value of big data,which can obtain some fixed value has obvious geographical characteristics,it is necessary to establish a regional database corresponding to the fixed value,and organizing the results into checking rules.Then,putting forward a kind of relay protection based on the breadth first search algorithm,the time complexity of this algorithm is minimum and the efficiency of checking search is highest,and designing a search process of non-constant standard tree to solve the checking of multiple parent node value tree.Finally,establishing the expert system to checking the relay setting value and output the results,the static attribute value and data analysis of the results are written to the system knowledge base,establishing a knowledge system based on Drools Guvnor,designing the inference engine system.This paper establishes the MySQL relational database management system,checks the setting value intelligently and outputs resultsThis relay setting value system based on relay big data researched and designed in the paper has been put into use initially,and the integrity and feasibility of the system is verified.