Overvoltages on the AEP 765-kV System

Hauspurg, A.; Vassell, Gregory S.; Stillman, G. I.; Charkow, Joel H.; Haahr, J. C.

doi:10.1109/tpas.1969.292524

Cited by 17 publications

(3 citation statements)

References 15 publications

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“…Moreover, it can be seen that the proposed trapped charge source simulates the worst overvoltage condition. In order to verify the efficiency of the proposed method, the simulation results of the proposed method are compared with the results of transient voltage measurement at the station for a 765-kV transmission line [13]. The field measurements have been performed for re-energizing a 330-mile transmission line fed by Lakeville station and opened at Kammer station (Figure 17).…”

Section: -Simulation Resultsmentioning

confidence: 99%

“…The results of tests and practical results for the transmission network in the presence of trapped charge voltage and shunt reactor are presented using the IEC standard in [25], as shown in Fig. (13).…”

Section: -Applicationmentioning

confidence: 99%

“…Although the presence of shunt reactors has an important effect on switching overvoltages, no accurate method has so far been proposed to model the worst case switching in a line equipped with these devices. Indeed, the recorded field data have generally been considered as sufficient (see [13] and [14]) and the installation of shunt reactors has been ignored in some studies ( [15] and [16]).…”

Section: -Introductionmentioning

confidence: 99%

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Frequency modeling of trapped charge source for transmission line switching studies in presence of shunt reactor using EMTP/ATPDraw

Akafi-Mobarakeh

Shariatinasab

Vahidi

2023

Preprint

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Insulation coordination studies are of great importance in power grid reliability. In this paper, a new method is proposed for modeling trapped charge sources (TCS) in switching transient studies. The TCS is used to take account of the voltage stored in line capacitors during reclosing operation after fault occurrence. The proposed model is designed based on the active filter concept, so it does not have the limitations of conventional TCS for simulating transient states in EMTP/ATPDraw. Given the natural frequencies of the transmission line to which the proposed TCS (PTCS) is connected, the PTCS injects the appropriate frequencies and eliminates voltage oscillations, which limit the use of TCS. To verify the efficiency of the PTCS, it is implemented in a real system with a shunt reactor, and the results are then compared with field measurements. A comparison of the results shows that the PTCS eliminates the voltage oscillations in the simulation before closing and provides a smooth voltage with the desired amplitude. Using the proposed model, the maximum line switching overvoltage is correctly calculated; this, in turn, results in a more accurate transmission line insulation design, which is technically and economically beneficial.

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Section: -Simulation Resultsmentioning

confidence: 99%

Section: -Applicationmentioning

confidence: 99%