Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 277-287 |
| Journal | Reliability Engineering and System Safety |
| Volume | 93 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2008 |
| MoE publication type | A1 Journal article-refereed |
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Keywords
- Substation
- Protection
- Failure
- Reliability
- Power system
- Transmission
- Importance
Cite this
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A method for analysing the reliability of a transmission grid. / Haarla, Liisa (Corresponding Author); Pulkkinen, Urho; Koskinen, Mikko; Jyrinsalo, Jussi.
In: Reliability Engineering and System Safety, Vol. 93, No. 2, 2008, p. 277-287.Research output: Contribution to journal › Article › Scientific › peer-review
TY - JOUR
T1 - A method for analysing the reliability of a transmission grid
AU - Haarla, Liisa
AU - Pulkkinen, Urho
AU - Koskinen, Mikko
AU - Jyrinsalo, Jussi
PY - 2008
Y1 - 2008
N2 - The paper describes a probabilistic method for transmission grid security evaluation. Power system security is the ability of the power system to withstand sudden disturbances such as short circuits. The method presented here uses event and fault trees and combines them with power system dynamic simulations. Event trees model the substation protection and trip operations after line faults. Different event tree end states (fault duration, circuit breaker trips) are simulated with power system dynamic analysis program. The dynamic analysis results (power system post-fault states) are then classified into secure, alert, emergency and system breakdown. The probabilities, minimal cut sets and grid level importance measures (Fussell-Vesely, risk increase and decrease factors) are calculated for the total and partial system breakdown. In this way, the relative importance of the substation devices regarding to the system breakdown can be reached. Also the more and less likely contributing factors to system breakdown are received. With this method, an existing 400 kV transmission grid with its line fault and device failure statistics is analysed.
AB - The paper describes a probabilistic method for transmission grid security evaluation. Power system security is the ability of the power system to withstand sudden disturbances such as short circuits. The method presented here uses event and fault trees and combines them with power system dynamic simulations. Event trees model the substation protection and trip operations after line faults. Different event tree end states (fault duration, circuit breaker trips) are simulated with power system dynamic analysis program. The dynamic analysis results (power system post-fault states) are then classified into secure, alert, emergency and system breakdown. The probabilities, minimal cut sets and grid level importance measures (Fussell-Vesely, risk increase and decrease factors) are calculated for the total and partial system breakdown. In this way, the relative importance of the substation devices regarding to the system breakdown can be reached. Also the more and less likely contributing factors to system breakdown are received. With this method, an existing 400 kV transmission grid with its line fault and device failure statistics is analysed.
KW - Substation
KW - Protection
KW - Failure
KW - Reliability
KW - Power system
KW - Transmission
KW - Importance
U2 - 10.1016/j.ress.2006.10.025
DO - 10.1016/j.ress.2006.10.025
M3 - Article
VL - 93
SP - 277
EP - 287
JO - Reliability Engineering and System Safety
JF - Reliability Engineering and System Safety
SN - 0951-8320
IS - 2
ER -