Abstract
System Integrity Protection Schemes (SIPS) are one of the most widely used solutions to the challenges in operating and protecting large and highly complex power systems. Therefore, it must be ensured that their performance meets the reliability requirements of electrical utilities. This paper suggests the use of Safety Integrity Level (SIL) for determining the range of acceptable SIPS reliability, as expressed using the probability of failure on demand (PFD). SIL is a reliability metric widely used in the process control industry. A procedure based on SIL and fault tree analysis is proposed for determining the minimum reliability required by the SIPS individual components for achieving the predetermined desired reliability level of the protection scheme. The theory of minimal cut sets is used for this purpose. The proposed methodology is illustrated using the Dinorwig intertrip scheme, which is located in North Wales, UK, and operated by National Grid.
Original language | English |
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Title of host publication | 2014 International Conference on Probabilistic Methods Applied to Power Systems, PMAPS 2014 - Conference Proceedings |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
ISBN (Electronic) | 9781479935611 |
DOIs | |
Publication status | Published - 17 Nov 2014 |
Event | 2014 International Conference on Probabilistic Methods Applied to Power Systems, PMAPS 2014 - Durham, United Kingdom Duration: 7 Jul 2014 → 10 Jul 2014 |
Other
Other | 2014 International Conference on Probabilistic Methods Applied to Power Systems, PMAPS 2014 |
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Country/Territory | United Kingdom |
City | Durham |
Period | 7/07/14 → 10/07/14 |
Keywords
- Dependability
- Fault Tree Analysis
- Reliability
- System Integrity Protection Schemes