학술논문
A real-time DSP based quadrilateral relay for distance protection of 25 kV AC traction overhead equipment
Document Type
Conference
Source
2004 International Conference on Power System Technology, 2004. PowerCon 2004. Power System Technology - POWERCON Power System Technology, 2004. PowerCon 2004. 2004 International Conference on. 2:1339-1344 Vol.2 2004
Subject
Language
Abstract
This paper presents the design, implementation and testing of a single-phase distance relaying scheme for 25 kV 50 Hz AC traction system using a Texas instruments TMS320C50 digital signal processor (DSP). The three-phase system with substations, track section with rectifier-fed DC locomotives and a detailed traction load are modeled using power system block set (PSB)/SIMULINK software package. The model has been used to study the effect of loading and fault conditions in 25 kV AC traction. The relay characteristic proposed is a combination of two quadrilaterals in the X-R plane in which resistance and reactance reaches are independently controllable. The algorithms, hardware and software are also briefly described.