КОНКУРС ПЕРЕВОДЧИКОВ

НАУЧНО-ТЕХНИЧЕСКОЙ ЛИТЕРАТУРЫ ПО ЭЛЕКТРОЭНЕРГЕТИЧЕСКОЙ И ЭЛЕКТРОТЕХНИЧЕСКОЙ ТЕМАТИКАМ (АНГЛИЙСКИЙ ЯЗЫК)

Глашев Даниял Солтанович

CABLE INSTALLATIONS

НОЯБРЬ, 2018

THE CHOICE OF THE TRANSMISSION LINE

One of the first steps of the decision process for a new transmission line project is to decide that an Overhead Line (OHL) will not be possible. Following this, the question needs to be clarified if an extruded cable or a Gas Insulated Line (GIL) will offer the best technical and economical solution.

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INSTALLATION OF UNDERGROUND CABLE SYSTEMS

The most common and simple installation of underground cable systems is direct burial along the existing public roads. When the selection of this kind of route is possible then the procedures to obtain the authorization for the construction of new underground lines becomes simplified because only one counterpart has to be taken into consideration. This avoids the requirement to enter into negotiations with a high number of private owners.

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THE OPERATION OF CABLE SYSTEMS

During normal operation, the load current going through the GIL or cables circuits should not exceed these rated continuous currents. However, in some circumstances, the circuit can be operated at higher current values. This can occur when the ambient temperature is lower than 40 °C (design value).

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CONCLUSION

Thus, regardless of the choice of cable system equipment may also be assigned an overload capability for higher than rated continuous current for a temporary period provided the temperature does not exceed the maximum temperature value specified in corresponding GIL or cable standards.

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THANK YOU FOR YOUR ATTENTION

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