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Title: Available transfer capability evaluation of inter-connected power system with the incorporation of dynamic voltage stability constraints
Authors: Cheng, Y
Chung, TS
Chung, CY
Yu, CW
Keywords: Available transfer capability
Dynamic security
Quasi-steady-state approximation
Voltage stability
Issue Date: 2004
Publisher: 電力工業部南京自動化硏究所
Source: 电力系统自动化 (Automation of electric power systems), 2004, v. 28, no. 6, p. 30-34 How to cite?
Journal: 电力系统自动化 (Automation of electric power systems) 
Abstract: In power market, available transfer capability (ATC) is an important technology index and market signal for the dispatcher in the operation of interconnected power system. Dynamic voltage stability must be incorporated as a crucial constraint in the determination of ATC. To satisfy the safe operation of open access interconnected power system, updating and posting the ATC values at regular intervals are required. The significance of on-line voltage stability assessment with acceptable accuracy for updating ATC is pointed out, and quasi-steady-state (QSS) approximation of long-term dynamics is introduced to evaluate ATC with dynamic voltage stability constraints. On a typical test system, the QSS approximation and full-time-scale simulation are performed. From the results, it shows that the proposed scheme can evaluate ATC with dynamic voltage stability constraints with a acceptable accuracy, while its calculation speed is more 10 times than the latter, and can meet the real-time requirement.
ISSN: 1000-1026
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