Transmission Line

Protection of Double Circuit Transmission Lines

Parallel transmission lines have been extensively utilized in modern power systems to enhance the reliability and security for the transmission of electrical energy. The different possible configurations of parallel lines combined with the effect of mutual coupling make their protection a challenging problem. The application of protection systems to double circuit lines requires careful consideration of fault scenarios under various network topology conditions. Complex analysis is required for phenomena such as mutual coupling, untransposed lines and cross-country faults as it may have adverse effects on relay performance, More

Distance Protection WAD

Distance relays have been successfully used for many years as the most common type of protection of transmission lines. The development of electromechanical and solid state relays with mho characteristics can be considered as an important factor in the wide spread acceptance of this type of protection at different voltage levels all over the world. More

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