Abstract
The evolution of electric power systems involves several aspects, dealing with policy and economics as well as security issues. Moreover, due to the high variability of operating conditions, evolution scenarios have to be carefully defined. The aim of this paper is to propose a flow-based procedure for the preliminary security analysis of yearly network evolution scenarios at the real scale level. This procedure is based on hourly load and generation conditions given by market solutions, and exploits Power Transfer Distribution Factors and Line Outage Distribution Factors to determine N and N−1 conditions, properly accounting for possible islanding in the latter case. The analysis of overloads is carried out by dealing with big data analysis through statistic indicators, based on power system background, to draw out critical operating conditions and outages. The procedure is applied to a provisional model of a European high voltage network.
Highlights
The provisional evolution process of power transmission network is driven by different factors.The studies are based on the definition of generation and demand scenarios [1,2,3], and of transmission expansion plans, involving different kinds of decisions and approaches [4,5]
Methods for the calculation of power transfer distribution factors (PTDFs) and line outage distribution factors (LODFs) matrices from network data, even with generalized matrix formulation in the presence of islanding, are presented in [15,16], whereas a technique is synthesized in [17] to reduce the computational burden of the matrix formulation, according to topological analysis
The perspective of this paper is to study network behavior under a defined network configuration resulting from an evolution plan which is valid for the full yearly horizon under consideration; the sensitivity factor matrices do not vary for each time interval
Summary
The provisional evolution process of power transmission network is driven by different factors.The studies are based on the definition of generation and demand scenarios [1,2,3], and of transmission expansion plans, involving different kinds of decisions and approaches [4,5]. Possible strategies for generator operation should account for present and future market platforms [6,7,8]. The impact of operation patterns on the network has to be assessed, usually through steady-state network analysis accounting for a range of different load/generation outlines [9,10]. Sensitivity factors can be employed to determine quick and affordable indications of line flows due to changes in generation/load patterns and in network configurations [14]. Methods for the calculation of PTDF and LODF matrices from network data, even with generalized matrix formulation in the presence of islanding, are presented in [15,16], whereas a technique is synthesized in [17] to reduce the computational burden of the matrix formulation, according to topological analysis
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