| Summary: | 碩士 === 國立中山大學 === 電機工程研究所 === 84 === This thesis is to investigate the various load shedding schemes
by performing the transient stability analysis for a large
industrial customer with cogeneration units. With this study,
the proper load shedding strategy has been proposed. The
mathematical modeling of the power system network, the exciting
systems, prime movers, and governors of cogenerators are
formulated and the corresponding parameters are identified by
field survey. For most of the cogeneration customers, the total
generation capacity of cogenerators is less than its total load
demand, it implies that the generation shortage will occur when
the tie line is trip to isolate the external utility power
system fault. The system stability problem is introduced by the
system fault and necessary load shedding has to be taken to
provent the isolated system from total blackout. In this
thesis, different load shedding has been studied to solve the
power system stability for Lin-Yuan plant of China Petroleum
Corporation under various generation and load levels, for
diferent fault conditions. The computer simulation has been
applied to verify the effectiveness of proposed load shedding
strategy. Besides, the superconducting magnetic energy storage
system has also been considered to improve the system stability
with its fast response capability. It is concluded that the
system stability of the industrial customers can be enhanced
significantly by the proposed strategies.
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