Reliability of substation protection system based on IEC61850

Xiaofu Xiong; Jun Yu; Xiaofang Liu; Zhijian Shen

doi:10.1007/s12209-008-0021-y

Transactions of Tianjin University ›› 2008, Vol. 14 ›› Issue (2) : 118 -122. DOI: 10.1007/s12209-008-0021-y

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Reliability of substation protection system based on IEC61850

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Abstract

Although the new technology of protection and automation system of substation based on IEC61850 standard has developed rapidly in China, reliability measures depending on this technology need to be further researched. By taking advantage of convenient information sharing, two kinds of new schemes, shared backup protection unit (SBPU) and signal backup (SB), have been proposed to solve the failure problem of protective devices and current/voltage transducers respectively, and the working principle of these two schemes are also described. Furthermore, the key technologies of on-line diagnosis of protective devices’ failure and on-line status diagnosis of optical or electronic current/voltage transducers to realize the two schemes are proposed.

Keywords

IEC61850 / reliability measures / shared backup protection unit (SBPU) / signal backup

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Xiaofu Xiong, Jun Yu, Xiaofang Liu, Zhijian Shen. Reliability of substation protection system based on IEC61850. Transactions of Tianjin University, 2008, 14(2): 118-122 DOI:10.1007/s12209-008-0021-y

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