جلد 9، شماره 4 - ( 9-1392 )                   جلد 9 شماره 4 صفحات 237-245 | برگشت به فهرست نسخه ها


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Damchi Y, Sadeh J. Effect of Remote Back-Up Protection System Failure on the Optimum Routine Test Time Interval of Power System Protection. IJEEE. 2013; 9 (4) :237-245
URL: http://ijeee.iust.ac.ir/article-1-570-fa.html
Effect of Remote Back-Up Protection System Failure on the Optimum Routine Test Time Interval of Power System Protection. . 1392; 9 (4) :237-245

URL: http://ijeee.iust.ac.ir/article-1-570-fa.html


چکیده:   (1564 مشاهده)
Appropriate operation of protection system is one of the effective factors to have a desirable reliability in power systems, which vitally needs routine test of protection system. Precise determination of optimum routine test time interval (ORTTI) plays a vital role in predicting the maintenance costs of protection system. In the most previous studies, ORTTI has been determined while remote back-up protection system was considered fully reliable. This assumption is not exactly correct since remote back-up protection system may operate incorrectly or fail to operate, the same as the primary protection system. Therefore, in order to determine the ORTTI, an extended Markov model is proposed in this paper considering failure probability for remote back-up protection system. In the proposed Markov model of the protection systems, monitoring facility is taken into account. Moreover, it is assumed that the primary and back-up protection systems are maintained simultaneously. Results show that the effect of remote back-up protection system failures on the reliability indices and optimum routine test intervals of protection system is considerable.
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نوع مطالعه: Research Paper | موضوع مقاله: 1-Protection
دریافت: ۱۳۹۲/۱/۲۷ | پذیرش: ۱۳۹۲/۱۰/۱ | انتشار: ۱۳۹۲/۱۰/۱

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