Software reliability estimation of computer relaying for transmission line protection using user-oriented software reliability model
by Aditya Anil, D.K. Mohanta, D. Sinha Roy, A.K. Panda
International Journal of Power and Energy Conversion (IJPEC), Vol. 1, No. 2/3, 2009

Abstract: Advancement in signal processing techniques and VLSI technology has rapidly substituted conventional electromechanical relays with novel alternatives like digital relays, also termed as computer relays in power system parlance. A computer relay is considered as a digital signal processor which continuously processes the values of line currents and voltages. Hence, the heart of the computer relay is the algorithm that implements the relaying scheme. Therefore, any computer relay software, before implementation in the real-time power system, has to be thoroughly tested for performance under various conditions. This paper presents a reliability estimation method of computer relay software based on modular structure of its components and the overall reliability requirement of its modules that involves the probabilistic inter-modular transitions to be formulated from the program flow based on a Markov model. The case study in this paper validates the efficacy of the proposed software reliability estimation for computer relaying of transmission line protection.

Online publication date: Thu, 20-Aug-2009

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Power and Energy Conversion (IJPEC):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com