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Development of multi-objective load shedding optimization via back tracking search algorithm with novel reactive power tracing index | IEEE Conference Publication | IEEE Xplore

Development of multi-objective load shedding optimization via back tracking search algorithm with novel reactive power tracing index


Abstract:

This paper demonstrates on the development of weak bus identification method using novel reactive power tracing index for determination and selection on appropriate buses...Show More

Abstract:

This paper demonstrates on the development of weak bus identification method using novel reactive power tracing index for determination and selection on appropriate buses for load shedding purpose. Power tracing principles using downstream looking algorithm is utilized for the development of a novel reactive power tracing index known as LQP_LT. The results obtained from the weak bus identification from various power system contingencies are analyzed for determination of the load shed amount. Optimization on the total amount of load shed is customized based on multi-objective functions via backtracking search algorithm. The objective functions are set to minimize the amount of load shedding and to minimize the total LQP_LT indices for all buses. A standard IEEE 57 test bus system is used as a data platform for the power flow simulations carried out in MATLAB environment. The results obtained post-load shedding for the proposed method is found to be robust, efficient and reliable for the implementation and execution of optimized amount and location selection for Under Voltage Load Shedding scheme in large network.
Date of Conference: 28-29 November 2016
Date Added to IEEE Xplore: 19 June 2017
ISBN Information:
Conference Location: Melaka, Malaysia

I. Introduction

Power system stability has gained much attention and has been acknowledged as an important problem for secure system operation [1]. Many major blackouts occurrence due to power system instability have demonstrated the importance of this phenomenon [1]–[5]. Initially, angle stability has been of primary concern to power utilities. However, in the last two decades power systems have been operating under more stressed conditions than previously due to several factors such as continuing growth in interconnections and integration of emerging new technologies. Limitations to install new generating plants due the environmental pressures and economical reason caused the transmission lines to operate near the loading limits in order to cater for the electricity power consumption in heavy load areas. In addition, the system loading pattern due to deregulation in the electricity market, the growing use of induction machines and large penetration of renewable energy sources in distribution systems have made local coordination control system to appear more complex. All these stressed conditions in a power system exhibit a new type of unstable behavior which is known as voltage instability.

References

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