Evaluation of multiprocessor algorithms for transient stability problems
The possibility of using a dedicated multiprocessor network to do the step-by-step computations needed in the digital simulation of the dynamic response of a large power system is examined. This multiprocessor network would use a general purpose digital computer for the input and output. The Bonneville Power Administration Transient Stability Program is the basis for the solution method used in this study. It is found that over 97% of the computations for a typical 1723-bus, 398-machine, stability study could be done in parallel. The computations involving the generating units with their voltage regulators and governors are quite simple to parallel as these computations are independent of each other. However, 30% of the computation time is spent solving the network equations, I = YE. As the number of processors in parallel is increased for this part of the solution, a saturation effect is observed. Various algorithms for this part of the solution and ways of scheduling work assignments to the processors are discussed. The availability of hardware to build such a multiprocessor network is also considered.
- Research Organization:
- Northwestern Univ., Evanston, IL (USA)
- OSTI ID:
- 6495986
- Report Number(s):
- EPRI-EL-947
- Country of Publication:
- United States
- Language:
- English
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