ew 18: e36

Research Article

Bus Allocation for Voltage Stabilization in Multi-Machine Power System Using GWO

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  • @ARTICLE{10.4108/eai.23-12-2020.167790,
        author={Nasser Ali Hasson AL-Zubaydi and Ali Abdulrazzak Jasim},
        title={Bus Allocation for Voltage Stabilization in Multi-Machine Power System Using GWO},
        journal={EAI Endorsed Transactions on Energy Web: Online First},
        keywords={PMU, GWO, proportional-integrals powers systems stabilizers (PI-PSS), And Bus allocation system},
  • Nasser Ali Hasson AL-Zubaydi
    Ali Abdulrazzak Jasim
    Year: 2020
    Bus Allocation for Voltage Stabilization in Multi-Machine Power System Using GWO
    DOI: 10.4108/eai.23-12-2020.167790
Nasser Ali Hasson AL-Zubaydi1,*, Ali Abdulrazzak Jasim1
  • 1: Al-Furat Al-Awsat Technical University, AL-Musaib Technical Institute, Babil, Iraq
*Contact email: nasseralzubaidy192@gmail.com


Today, power systems are being operated under greatly stressed conditions due to rapidly growing demand for electrical energy, penetration of renewable energy sources, large seasonal load variations, and operation in competitive energy market conditions. The main part of this work involves achieving complete system observability and improving voltage stability level simultaneously by placing a minimal number of PMUs. Initially, weak buses (very sensitive to smaller reactive power variations) are identified by using Fast Voltage Stability Index (FVSI) calculation. In this work, the reliability of observing the weak buses is purposely maximized. Suppose any sudden voltage instability problem occurs on the weak bus. In that case,PMUs can immediately communicate to the operator and prevent the outage of the weak bus, even if one of the PMUs fails. PMUs can maintain the FVSI value of the critical lines, not exceeding their maximum limit, by initiating the remedial actions scheme, such as smart islanding, controlling the transformer tap settings, coordinating between automatic corrective devices, etc. In this system, the positioning of PMUs on poor buses should be favoured over other buses. Improved voltage reliability can be accomplished by effective and accurate control of critical lines and vulnerable buses. This is done by a small rise in the amount of PMUs relative to previous results.