This paper presents the development of the distributed processing based Security Constrained Optimal Power Flow (SCOPF) and its integration to a Distributed Shared Memory Energy Management System (EMS) in order to enable real time power systems security control. The optimization problem is solved by the Interior Points Method and the security constraints are considered by the use of Benders Dec...

Power system security assessment involves ascertaining the post-contingency security status based on the pre-contingency operating conditions. A system operator accomplishes this by the knowledge of critical system attributes which are closely tied to the system security limits. For instance, voltage levels, reactive power reserves, reactive power flows are some of the attributes that drive the...

On-line dynamic security assessment (DSA) is challenging using conventional techniques because most DSA approaches use detailed mathematical models of the system that are computationally intensive and time-consuming. In this paper, a method based on Artificial Neural Networks (ANN) is developed to estimate the security margin. The security margin for a given power system is obtained by applying...

power, security, and liberty, considered as the objectives of political sovereignty by some scholars, are also incorporated in naraghi's conception of justice. in his view, political power is a mere instrument for the application of justice, and providing security is a major function of state and can be maintained only in the light of justice. the citizens and members of the islamic societ...

This paper describes ongoing research and development of machine learning and other complementary automatic learning techniques in a framework adapted to the specific needs of power system security assessment. In the proposed approach, random sampling techniques are considered to screen all relevant power system operating situations, while existing numerical simulation tools are exploited to de...

The successful application of the unified power flow controller (UPFC) provides a new control method for the secure and economic operation of power system. In order to make the full use of UPFC and improve the economic efficiency and static security of a power system, a preventive security-constrained power flow optimization method considering UPFC control modes is proposed in this paper. First...