Control of power systems to epsilon-optimize the probability distribution of the time to insecurity
Security of a power system is considered to be an instantaneous measure of a system's robustness with respect to imminent disturbances such as load fluctuations, equipment failures and short circuits. The security control deals with the operation of generation rescheduling, transmission line switching, or load management to raise the security level of a power system. To maintain system security is crucial in the on-line operation of power systems. In this paper, the security control via generation rescheduling is investigated. A continuous time Markov chain (CTMC) model is proposed for the power system. The framework for probabilistic dynamic security assessment is modified for the proposed CTMC model. In power system operation, it is more desirable to maintain a uniformly high security level. Therefore, the proposed objective for optimal security control is to maximize the probability that the system remains secure at time t for all t in a finite horizon (0,T). An iterative procedure similar to the policy iteration of dynamic programming is developed to generate an epsilon-optimal generation schedule.
- Research Organization:
- Washington Univ., Seattle (USA). Dept. of Electrical Engineering; California Univ., Berkeley (USA)
- DOE Contract Number:
- AC01-82CE76221
- OSTI ID:
- 6796351
- Report Number(s):
- CONF-840576-2; ON: DE84013873
- Resource Relation:
- Conference: International symposium on circuits and systems - ISCAS'84, Montreal, Canada, 7 May 1984; Other Information: Portions are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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