Abstract
A controlled islanding strategy should be carefully designed to prevent power systems from overall collapse caused by extremely serious faults, which is of high computational complexity for large-scale AC/DC power systems. An efficient controlled islanding strategy for large-scale AC/DC power systems is proposed in this paper. The original power system is first reduced to decrease the computational complexity. The reduced power system is then partitioned into a number of dispatch areas by using the breadth-first search algorithm. Next, the reduced power system is recovered to obtain the detailed information of the dispatch areas. The spectral clustering algorithm is used to cluster the large number of dispatch areas into a small number of islanding areas. Finally, the controlled islanding strategy is verified by assessing the steady and dynamic performance of the power system. The feasibility, efficacy, and adaptability of the controlled islanding strategy are demonstrated by the case study of a large-scale multi-infeed AC/DC power system in China.
Highlights
Structural integrity is the fundamental requirement for the secure operations of power systems.controlled islanding should be implemented to prevent power systems from overall collapse when extremely serious faults occur and propagate with the structural integrity jeopardized
Complex interactions between AC and DC systems will be witnessed since more high voltage direct current (HVDC) transmission lines are being put into operation
An efficient controlled islanding strategy for large-scale AC/DC power systems is proposed in this paper
Summary
Structural integrity is the fundamental requirement for the secure operations of power systems. A network reduction method is proposed in [9] to level down the system structure to an acceptable scale, which comprehensively accounts for the topological characteristics of the original power system, electrical distances between buses, and loading conditions of transmission lines. Controlled islanding strategies for large-scale interconnected power systems are proposed in [21,22,23]. An efficient controlled islanding strategy for large-scale AC/DC power systems is proposed in this paper. The controlled islanding strategy is verified by computing the index to reflect the steady-state characteristics and conducting time-domain simulations to assess the dynamic performance of the power systems.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
