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Security Monitoring and Assessment of an Electric Power System

Volume 10, Number 3, May 2014 - Paper 04 - pp. 273-280

PUROBI PATOWARY and NEERAJ KUMAR GOYAL

Reliability Engineering Center, IIT Kharagpur, Kharagpur-721303 (W.B.), India.

(Received on July 20, 2013, revised on January 16, 2014 and March 19, 2014)

Abstract:

Proposed Probabilistic Load Flow (PLF) approach, based on the method of cumulants, is used for bus voltage security assessment. The work accurately estimates the unknown probability distribution and density function of the involved complex random variables (CRV’s). With the help of these distributions a fast and accurate contingency ranking for security assessment is made possible. The advantage of the proposed method is that all possible contingencies are taken into account without complex convolutions and the method gives the densities and distributions of the variables in a single run. The method has been applied to the IEEE RTS 7-Bus test system which consists of 7 buses and 10 lines as well as the IEEE 24 bus system which consists of 24 buses and 38 lines. The information will be useful in operational decision making and ultimately help to improve the reliability of the power system.

 

References: 11

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