International Journal of Scientific & Technology Research

Home About Us Scope Editorial Board Contact Us

IJSTR >> Volume 8 - Issue 8, August 2019 Edition

International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616

A Novel Optimization Approach For Solving Optimal Load Shedding Problem Considering Different Voltage Stability Indices

[Full Text]



Raghu C N, A Manjunatha, G Raghavendra



Optimal Load Shedding, Improved adaptive Harmony Search Algorithm, Voltage collapse, Active and Reactive power.



Due to the increase in the complexity of the power system and the increase in electricity consumption. The power system no longer remains in equilibrium. In this paper, to restore the equilibrium in power system network, a proposal is made with the novel optimization technique to solve optimal load shedding problem by curtailing less amount of load at the optimal location and improving voltage profile. In this methodology, the risk of voltage instability and the critical buses are ranked based on NVSI. In this method, the NVSI constraint is used in the problem formulation in two ways: (a) New voltage stability index constraints added along with OPF formulation (b) Index is used in objective function formulation. The Modified Adaptive Harmony Search (MAHS) algorithm based on the improvisation of a musical tune approach is used to solve OLS strategies. The effectiveness of the proposed techniques is considered in terms of the location of load shedding and the amount of shedding. The effectiveness of the proposed method is tested on the standard IEEE-30 bus system. Simulation results show the minimum amount of load shedding using MAHS, while the NVSI provides an optimal load shedding location. By using this method, various power system blackouts can be prevented.



[1] Raghu C N. A. Manjunatha, “Assessing Effectiveness of research for load shedding in power system” International Journal of Electrical and Computer Engineering (IJECE), Vol.7, No.6, pp.3235-3245, 2017.
[2] R Mageshvaran, T Jayabharathi, “Steady-state load shedding to mitigate blackout in power systems using an improved harmony search algorithm”, Ain Shams Engineering Journal, Vol.6, pp.819-834, 2014.
[3] Musirin, T.K. Abdul Rahaman, “Estimating Maximum Loadability for weak bus identification using FVSI” IEEE Power Engineering Review, Vol.22, No.13, pp.50-52,2002.
[4] Kanimozhi R, Selvi K, “ An effective method for contingency ranking using voltage stability index in power system” Journal of Electrical System, Vol 11, pp.353-366,2015.
[5] C Fatih Kucuktezcan, V M Istenihan Genc, “ Preventive and corrective control application in power system via Big Bang-Big Crunch optimization” International Journal of Electrical power & Energy Systems, Vol.67, pp.114-124, 2015.
[6] Z Zhu, J” Optimal load shedding using AHP and OKA” International journal of power and energy systems, Vol.10, pp.3230-3234, 2005.
[7] N M Sapari, H Mokhlis, Javed Ahmed Laghari, A H A Bakar, M R M Dahalan, “ Application of load shedding schemes for distribution network connected with distributed generation: A Review” Renewable and sustainable energy review, Vol.82, pp.858-867, 2018.
[8] Vijay Kumar, Jitender Kumar Chhabra, Dinesh Kumar, “ Effect of Harmony search parameters’ variation in clustering, In: Proc. Of 2nd International conference on communication, computing & security, pp. 265-274,2012