Sequential analysis of optimal transmission switching with contingency assessment

Optimal transmission switching (OTS) has been introduced as a persuasive approach for cost minimisation and the improvement of power system flexibility by utilising the lines’ existing conditions. Ordinary OTS based on optimal power flow (OPF) equations used in the previous studies may expose system...

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Vydané v:IET generation, transmission & distribution Ročník 12; číslo 6; s. 1390 - 1396
Hlavní autori: Tarafdar Hagh, Mehrdad, Zamani Gargari, Milad, Vahid Pakdel, Mir Jalal
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: The Institution of Engineering and Technology 27.03.2018
Predmet:
contingency assessment
cost minimisation
cost reduction
integer programming
load flow
mixed integer nonlinear programming model
nonlinear programming
N‐1 security criteria
OPF equations
optimal power flow
optimal transmission switching
OTS
persuasive approach
power system flexibility
power system security
power transmission economics
Research Article
security assessment programs
sequential analysis
system security consideration
total operational cost
cost reduction
cost minimisation
integer programming
nonlinear programming
persuasive approach
sequential analysis
contingency assessment
optimal power flow
power transmission economics
OPF equations
power system security
OTS
optimal transmission switching
security assessment programs
total operational cost
mixed integer nonlinear programming model
power system flexibility
N-1 security criteria
load flow
system security consideration
ISSN:1751-8687, 1751-8695
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Popis
Shrnutí:Optimal transmission switching (OTS) has been introduced as a persuasive approach for cost minimisation and the improvement of power system flexibility by utilising the lines’ existing conditions. Ordinary OTS based on optimal power flow (OPF) equations used in the previous studies may expose system security in some cases. This study proposes a novel sequential method to investigate the security of the system in post-OTS circumstances by considering N − 1 contingency criteria. The proposed method ranks the candidate lines as an operational strategy to reach the maximum reduction of the total operational cost by considering the security roles of transmission lines. The formulation of OTS and security assessment programs is based on alternating current OPF. The proposed approach provides more accurate solutions to a mixed integer non-linear programming model of the OTS program with N − 1 security criteria within a reasonable computation time. The obtained simulation results of the proposed method have been presented on IEEE 57-bus and IEEE 118-bus standard test systems. It is shown that the results of the ordinary OTS for lines’ outage ranking change because of system security consideration.
ISSN:1751-8687
1751-8695
DOI:10.1049/iet-gtd.2017.0435