Flashover Analyses of Transmission Towers with Nonlinear Grounding Resistance Model

Hara, Takehisa; Yasuda, Yoh; Hirakawa, Yuji; Hayanose, Nobuhiko; Takeuchi, Makoto; Kawabata, K.

doi:10.1541/ieejpes1990.120.2_234

Cited by 3 publications

(1 citation statement)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The authors focused on the characteristic of grounding impedance and have experimented on that of a practical 500 kV transmission tower footing[s]- [9]. We, furthermore, have investigated on lightning surge analysis on 500 kV transmission line using EMTP/ATP to find that the choice of grounding impedance model may considerably influence to the result of back flashover accidents.…”

Section: Introductionmentioning

confidence: 99%

Sensitivity Analysis on Grounding Models for 500kV Transmission Lines

et al. 2001

Self Cite

View full text Add to dashboard Cite

In order to calculate lightning surge analysis in power systems, appropriate models and parameters describing the components of systems should be required. Moreover, it is necessary to clarify how much those models would influence result of simulation. In other words, it is important to confirm how much probability of back flashover accidents would occur in changing grounding model or its input parameter. This paper will examine to compare some models for components in transmission tower and will show influence to the back flashover result, especially focusing on grounding impedance model.

show abstract

Section: Introductionmentioning

confidence: 99%

Sensitivity Analysis on Grounding Models for 500kV Transmission Lines

et al. 2001

Self Cite

View full text Add to dashboard Cite

show abstract

Study of Lightning Outage Performance of Transmission Line by the EMTP using Grounding Resistance Model with Soil Ionization Characteristics

et al. 2004

View full text Add to dashboard Cite

The EMTP is widely used for lightning surge analysis. As for transmission lines, they have studied lighting outage performance of transmission line by the EMTP. In the EMTP analysis, grounding resistance of a tower is usually modeled as a constant resistance model, however it is known that soil ionization sometimes occurs by high currents such as a lightning stroke. Therefore we have developed a grounding resistance model with soil ionization characteristics for the EMTP analysis. In this paper, we analyze an outage of an existing transmission line so that we investigate the effect of a grounding resistance model with soil ionization characteristics.

show abstract

Flashover Analyses of 500 kV Transmission Towers with Capacitive Grounding Resistance

et al. 2000

Self Cite

View full text Add to dashboard Cite

Abstract:Grounding resistances of transmission towers in Japan are commonly required to be less than 10 ohm to avoid lightning back flashover accident. The surrounding soil, therefore, must be improved by chemical or construction ways if the resistance are much higher than the recommended value. In order to reduce the cost of these works, the authors have investigated on flashover simulation with various grounding conditions. In this paper, we propose the particular model for grounding resistance concerning the impulse characteristics of an actual 500kV-transmission tower footing base. We also present the results of the EMTP simulations with the proposed model, where the results suggest that it be not always necessary to limit the grounding resistance less than 10 ohm and it may be possible to reduce construction cost for transmission towers.

show abstract

Flashover Analyses of Transmission Towers with Nonlinear Grounding Resistance Model

Cited by 3 publications

References 2 publications

Sensitivity Analysis on Grounding Models for 500kV Transmission Lines

Sensitivity Analysis on Grounding Models for 500kV Transmission Lines

Study of Lightning Outage Performance of Transmission Line by the EMTP using Grounding Resistance Model with Soil Ionization Characteristics

Flashover Analyses of 500 kV Transmission Towers with Capacitive Grounding Resistance

Contact Info

Product

Resources

About