Impact of Installation of 400 kV Shunt Reactors on Oman Grid

Riyami, H. A. Al; Busaidi, A. G. Al; Nadabi, A. A. Al; Sayabi, M. N. Al; Omairi, Amzar; Abdalla, Omar H.

doi:10.1109/upec.2018.8541955

Cited by 3 publications

(2 citation statements)

References 5 publications

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“…In [18], the impact of the installed 400 kV shunt reactors on Oman grid is described. The shunt reactors are installed to limit the voltage rise in the grid during light loading conditions in winter period.…”

Section: Introductionmentioning

confidence: 99%

Experimental Validation of a Mitigation Method of Ferranti Effect in Transmission Line

et al. 2023

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Electric power transmission networks should be operated in efficient, safe, and reliable conditions. To improve the stability and transfer capability of power transmission, it is necessary to mitigate the Ferranti effect. This paper investigates the impact of increasing the length of the transmission line on its receiving end voltage under no-load conditions. A variable shunt reactor compensation for transmission lines is used to control the voltage level at different lengths of the transmission line. The proposed method demonstrates that the value of the shunt reactor required to maintain the receiving end voltage can be estimated. Moreover, the system is modeled using the PowerWorld simulator, and the effectiveness of the proposed model has been verified by experimental results. The experimental results demonstrate the efficiency of the proposed methodology and match the simulation results, which are then validated by simulating the WSCC 9-bus and IEEE 30-bus test systems.

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Section: Introductionmentioning

confidence: 99%

Experimental Validation of a Mitigation Method of Ferranti Effect in Transmission Line

et al. 2023

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“…However, under capacitive load conditions, power transformers are also affected by the Ferranti effect and can suffer from damage if a large over-voltage is present at the secondary winding. A classical solution for it is the installation of expensive and bulky inductive reactors at different locations of the lines to absorb the reactive power [11,[13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Variable Reactance Criteria to Mitigate Voltage Deviations in Power Transformers in Light- and Over-Load Conditions

Haro-Larrode

2023

Machines

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In this paper, variable reactance (VR) criteria are proposed to mitigate voltage deviations in power transformers under light-load inductive and capacitive conditions, as well as for over-load conditions. Under capacitive load conditions, power transformers are affected by the Ferranti effect as much as AC lines are and can suffer damage if a large over-voltage is present at the secondary winding. A classical solution for this is the installation of expensive and bulky inductive reactors at different locations of the AC lines to absorb the reactive power. Instead, this paper addresses VR techniques focused on power transformer reactance modification to compensate for the over-voltage. With these techniques, the Ferranti effect on power lines can also be reduced. Another benefit is the cancellation of over-voltages whose cause is different from the Ferranti effect, namely under inductive load conditions. In addition, they can also enhance the parallel operation of power transformers by allowing more flexibility for overload sharing among transformers. The VR techniques are derived from the Kapp phasor-diagram theory and have been validated experimentally at a small scale in the laboratory. When implemented in a big network, they can also improve the load-flow voltage and AC line-loading profiles and even increase the power factor of certain generators.

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Optimization Assessment for 400 kV Shunt Reactors Sizing and Locations in Oman Power Grid

Zadjali

Riyami

Dyk

et al. 2022

2022 23rd International Middle East Power Systems Conference (MEPCON)

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Impact of Installation of 400 kV Shunt Reactors on Oman Grid

Cited by 3 publications

References 5 publications

Experimental Validation of a Mitigation Method of Ferranti Effect in Transmission Line

Experimental Validation of a Mitigation Method of Ferranti Effect in Transmission Line

Variable Reactance Criteria to Mitigate Voltage Deviations in Power Transformers in Light- and Over-Load Conditions

Optimization Assessment for 400 kV Shunt Reactors Sizing and Locations in Oman Power Grid

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