Damping of Switching Overvoltages in EHV Networks - New Economic Aspects and Solutions

Baltensperger, P.; Djurdjevic, Petar

doi:10.1109/tpas.1969.292500

Cited by 6 publications

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References 5 publications

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“…Hesse [7,8] has pointed out that I^R losses due to zero- switching operations have been one of the controlling factors in the design of EHV air-insulated structures [10,11]. The improvements in EHV power circuit breakers have been carried out by many researchers over the years [12,13,14]. With these improvements, overvoItages caused by energization or re-energization of lines can now be made so low that the limiting factor determining how much the line insulation may be reduced might be determined by the overvoltage produced by single-line-to-ground fault [15,16].…”

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confidence: 99%

A study of the effects of full three-phase representation in power system analysis

Mirheydar

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C. Calculated Results 63 1. Effect of the length of untransposed transmission line on network unbalances 63 2. Effect of system loading on network unbalances 3. Effect of power coupling on power flows 4. Effects of load unbalances 5. Comparisons between the 3-4> load flow program and system reduction method D. Conclusions IV. TRANSIENT ANALYSIS OF UNBALANCED THREE-PHASE TRANSMISSION SYSTEM 99 A. Introduction 99 B. Transition Point on Three-Phase Systems 99 C. Summary and Discussion 110 V. RESULTS OF THE ELECTROMAGNETIC TRANSIENT ANALYSIS 113 A. Introduction 113 B. Study of the. 24-Bus EHV Test System 113 1. Effects of untransposed transmission lines and unbalanced loads on the transient overvoltages 114 2. Evaluation of the accuracy of using balanced initial conditions 115 C. Conclusions

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