Optimal Emergency Control Strategy Considering Transient Stability Constrains

doi:10.3969/j.issn.1000-7229.2015.10.018

Abstract

Abstract:

With the deepening of the power market, the users reliability has been paid much attention. In order to fully reflect the different reliability requirements of users, the emergency control strategies which take the power outage cost of users as economic index in optimization objective function have been widely used. However, these decision models do not consider the transient stability of the system, so the system may be unable to withstand failure again and cause transient instability after the execution of generator re-scheduling and load shedding. In view of this problem, this paper proposed an optimal emergency control strategy with considering transient stability constrains. The relevant constraints were used in this model could indicate that the system satisfied the transient stability at the new operating point. Therefore, the system could still maintain transient stability after the execution of generator re-scheduling and load shedding. Finally, taking IEEE-RBTS 6-nodes system and new-England 39-nodes system as example, the proposed strategy was described in detail, and its result was compared with that of the strategy without considering transient stability constrains.　

Key words: emergency control, power outage cost, optimal model, transient stability of power system

CLC Number:

TM 715

SHAO Changzheng, DING Yi, SONG Yonghua . Optimal Emergency Control Strategy Considering Transient Stability Constrains[J]. ELECTRIC POWER CONSTRUCTION, 2015, 36(10): 118-122.

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