Graduate Thesis Or Dissertation
 

Alternating current and voltage profiles on compensated high-voltage underground power cables

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  • The utilization of extra-high-voltage underground power cables over distances greater than 100 miles presents serious problems relative to the voltage and current limits of such cables. These problems are directly associated with the fixed amount of capacitance inherent in long cable lines. As a result, large charging currents are characteristic with long cable line operation when energized under steady-state conditions. A possible means of handling this problem is realized in the use of shunt inductive reactors as charging-current compensating elements. These reactors have a definite effect on the voltage and current magnitudes depending upon the mode of compensation. Without compensation, maximum voltage and current magnitudes well exceed the cable limits of voltage and current. With compensation, these maximum amplitudes are reduced in magnitude depending upon the number and degree of compensating units. This thesis presents a quantitative evaluation of the voltage and current profiles of long cable lines with various modes of compensation.
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