Integrated Evaluation of Reliability and Stability of Power Systems
This paper investigates the impacts of transient instability on power system reliability. Traditionally, composite system reliability evaluation has been performed based on steady-state estimation of load curtailments; system dynamics have often been ignored, mostly due to computational complexity....
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| Veröffentlicht in: | IEEE transactions on power systems 2017-09, Vol.32 (5), p.4131-4139 |
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| container_title | IEEE transactions on power systems |
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| creator | Benidris, Mohammed Mitra, Joydeep Singh, Chanan |
| description | This paper investigates the impacts of transient instability on power system reliability. Traditionally, composite system reliability evaluation has been performed based on steady-state estimation of load curtailments; system dynamics have often been ignored, mostly due to computational complexity. In this paper, three probabilistic transient stability indices are proposed to assess system robustness against dynamic contingencies and to account for system instability in computing reliability indices. A direct method is utilized for transient stability assessment based on computing the energy margin of the system under fault events (energy margins measure the ability of a system to withstand contingencies). Energy margins along with the probability of occurrences of the events are used to update the probabilistic transient stability indices. The dependencies of reliability and stability indices on the fault clearing time are also evaluated. This method is applied on the reduced Western Electricity Coordinating Council and the New England 39 bus test systems. The results indicate the importance of considering the effect of stability in reliability evaluation. |
| doi_str_mv | 10.1109/TPWRS.2017.2656131 |
| format | Article |
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Traditionally, composite system reliability evaluation has been performed based on steady-state estimation of load curtailments; system dynamics have often been ignored, mostly due to computational complexity. In this paper, three probabilistic transient stability indices are proposed to assess system robustness against dynamic contingencies and to account for system instability in computing reliability indices. A direct method is utilized for transient stability assessment based on computing the energy margin of the system under fault events (energy margins measure the ability of a system to withstand contingencies). Energy margins along with the probability of occurrences of the events are used to update the probabilistic transient stability indices. The dependencies of reliability and stability indices on the fault clearing time are also evaluated. This method is applied on the reduced Western Electricity Coordinating Council and the New England 39 bus test systems. 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Traditionally, composite system reliability evaluation has been performed based on steady-state estimation of load curtailments; system dynamics have often been ignored, mostly due to computational complexity. In this paper, three probabilistic transient stability indices are proposed to assess system robustness against dynamic contingencies and to account for system instability in computing reliability indices. A direct method is utilized for transient stability assessment based on computing the energy margin of the system under fault events (energy margins measure the ability of a system to withstand contingencies). Energy margins along with the probability of occurrences of the events are used to update the probabilistic transient stability indices. The dependencies of reliability and stability indices on the fault clearing time are also evaluated. This method is applied on the reduced Western Electricity Coordinating Council and the New England 39 bus test systems. 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| ispartof | IEEE transactions on power systems, 2017-09, Vol.32 (5), p.4131-4139 |
| issn | 0885-8950 1558-0679 |
| language | eng |
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| source | IEEE Electronic Library (IEL) |
| subjects | Clearing Computation Direct methods Dynamic stability Electric power systems Electrical loads Energy measurement Engineering Power system reliability Power system stability reliability Reliability analysis Stability analysis Stability criteria State estimation System dynamics System reliability Transient analysis Transient stability |
| title | Integrated Evaluation of Reliability and Stability of Power Systems |
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