| The Relay Protection(RP)device is the first line of the operation of power system safe and stable.It has been increasingly complicated for managing the Relay Protection(RP)with the development of electric systems.It is beneficial for the electric system network to replace manual work with automatic computer gradually to perform calculation towards the relay protection.Using revelant computing softwares could help people on RP out of laborious and tedious work,thus enhancing both the RP speed and efficiency.In this paper,taking Nanling county power grid as an example,this paper studies the calculation of relay protection based on software.Firstly,This paper makes an analyze on the problems of Relay protection setting of electric power company in Nanling County,Anhui Province,and proposes the development requirement of Nanling company to the relay protection setting calculation software.Secondly,by the use of foreign experience on development the related softwares,combined with the running efficiency practically,the work developed a set of RP calculation software suitable for this county.And this paper introduces its principle,process and the related fixed value single generation circulation process as well as the development implementation plan.Third,the software function is introduced.The reliability and validity of the software are verified by comparing the results of software calculation with the results of manual calculation.The software implementation of the setting calculation operation,real-time display of the process of setting the function,avoid mistakes,and after the setting is completed,in accordance with user defined module requirements,provide setting and calculation.At last,this paper introduces the application effect,economic benefit and promotion effect of the software in Nanling power grid. |
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