Frequency Control During Power System Restoration

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Yari, Vahid | 2010

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 40815 (05)
University: Sharif University of Technology
Department: Electrical Engineering
Advisor(s): Ranjbar, Ali Mohammad
Abstract:
The problem of restoring power systems after a complete or partial blackout is as old as the power industry itself. In recent years, due to economic competition and deregulation, power systems are operated closer and closer to their limits. At the same time, power systems have increased in size and complexity. Both factors increase the risk of major power outages. After a blackout, power needs to be restored as quickly and reliably as possible, and consequently, detailed restoration plants are necessary. This thesis concentrates on the initial stages of restoration where load pickup and frequency control problem is identified. The best sequence of load pickup for power plants during power system restoration is obtained according to frequency stability issues. The system frequency behavior after the energization of loads is assessed using a novel approach. The proposed approach is validated using time-domain simulations based on IEEE 39 bus test system data.
Keywords:
Power System Restoration ; Frequency Control ; Phasor Measurement Unit ; Load Pickup

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