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access icon free Reliability evaluation and analysis of multi-terminal interconnect power distribution system with flexible multi-state switch

© The Institution of Engineering and Technology
Received 11/05/2020, Accepted 20/07/2020, Revised 29/06/2020, Published 13/08/2020

In order to help flexible multi-state switch (FMSS) access the power system, a reliability evaluation method for multi-terminal interconnected power distribution systems with FMSS is proposed. First, according to the physical structure and operation mode of FMSS, a reliability model of FMSS is established. Then, by exploring how FMSS access strategy changes the system operation mode as well as network structure, a load recovery method for disconnected side is designed and the factors affecting the system reliability are refined. Finally, the sequential Monte Carlo is applied to evaluate the reliability of the multi-terminal interconnected distribution system with FMSS, and the influence of FMSS access strategy on the system reliability is quantitatively analysed in two different systems. The cases verify the effectiveness of the method, and the results show that: (i) the access of FMSS and the proposed load recovery strategy can significantly enhance the system reliability, (ii) the access position, capacity and reliability of FMSS affect system reliability, (iii) the improvement of system reliability is optimal when the FMSS with a large capacity connected to the end of the system, and close to important loads. This research can provide theoretical support for the planning of flexible interconnected power distribution system.

Inspec keywords: power system interconnection; power distribution reliability; Monte Carlo methods

Other keywords: FMSS access strategy; multiterminal interconnected distribution system; operation mode; multiterminal interconnected power distribution systems; flexible interconnected power distribution system; sequential Monte Carlo; multiterminal interconnect power distribution system; physical structure; system reliability; system operation mode; reliability model; flexible multistate switch access; load recovery strategy; reliability evaluation method

Subjects: Power system management, operation and economics; Distribution networks; Reliability; Monte Carlo methods

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