A Power System Network Splitting Strategy Based on Contingency Analysis

Nur Zawani Saharuddin, Izham Zainal Abidin, Hazlie Mokhlis, Abdul Rahim Abdullah and Kanendra Naidu
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Nur Zawani Saharuddin: Faculty of Electrical Engineering, Universiti Teknikal Malaysia Melaka, 76100 Durian Tunggal, Melaka, Malaysia
Izham Zainal Abidin: Institute of Power Engineering, Universiti Tenaga Nasional, Jalan Ikram- Uniten, 43000 Kajang, Selangor, Malaysia
Hazlie Mokhlis: Department of Electrical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia
Abdul Rahim Abdullah: Faculty of Electrical Engineering, Universiti Teknikal Malaysia Melaka, 76100 Durian Tunggal, Melaka, Malaysia
Kanendra Naidu: Electrical Technology Section, Universiti Kuala Lumpur, British Malaysian Institute, 53100 Gombak, Kuala Lumpur, Malaysia

Energies, 2018, vol. 11, issue 2, 1-18

Abstract: This paper proposes a network splitting strategy following critical line outages based on N-1 contingency analysis. Network splitting is the best option for certain critical outages when the tendency of severe cascading failures is very high. Network splitting is executed by splitting the power system network into feasible set of islands. Thus, it is essential to identify the optimal splitting solution (in terms of minimal power flow disruption) that satisfies certain constraints. This paper determines the optimal splitting solution for each of the critical line outage using discrete evolutionary programming (DEP) optimization technique assisted by heuristic initialization approach. Heuristic initialization provides the best initial cutsets which will guide the optimization technique to find the optimal splitting solution. Generation–load balance and transmission line overloading analysis are carried out in each island to ensure the steady state stability is achieved. Load shedding scheme is initiated if the power balance criterion is violated in any island to sustain the generation–load balance. The proposed technique is validated on the IEEE 118 bus system. Results show that the proposed approach produces an optimal splitting solution with lower power flow disruption during network splitting execution.

Keywords: cascading failures; N-1 contingency; network splitting strategy; DEP optimization technique (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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