Lightning activity in Indonesia in very high, and the ratio of lightning tripouts of the transmission line is very high, reaching 66%. The results of our investigation show that a positive correlation exists between the number of lightning tripous on a 150-kV transmission line and the tower-footing resistance and that the main cause of the tripouts is the back-flashover. Moreover. it turns out …
Lightning activity in Indonesia is very high, and lightning trip-outs of the transmission line frequently occur. In this paper, the lightning performance on the 150 kV transmission line in West Sumatra in Indonesia is studied in detail and it is shown that the lightning trip-out rate depends on the lightning activity at the local area, the tower footing resistance, the span length and the lengt…
Lightning is a natural phenomenon that can cause a disturbance on a transmission line. From the data of the Distribution and Load Control Centre Sumatra (Sumatra P3B), the intensity of lightning trip-outs on a 150 kV transmission line was very high in Indonesia, reaching 66%. The results of the investigation showed correlations between the occurrence of trip-outs on a 150 kV transmission line …
The trip-out rates calculated by taking account of the reduction in the tower-footing resistance due to the ionizing effect agree well with the observed ones. This indicates the importance of the i mpulse resistance in the analysis of the lightning performance of the line. The trip-out rate at the lower arm is high for the cases of the average grounding resistance of 33.3 ohms, and the rates at…
Lightning activity in Indonesia is very high, and lightning trip-outs of the transmission line frequently occur. In this paper, the lightning performance on the 150 kV transmission line in West Sumatra in Indonesia is studied in detail and it is shown that the lightning trip-out rate depends on the lightning activity at the local area, the tower footing resistance, the span length and the lengt…
The authors have carried out investigation of lightning tripout of 150 kV transmission lines in West Sumatra in Indonesia. The results of the investigation in this paper show a positive correlation between the number of lightning tripouts on a 150 kV transmission line and the tower-footing resistance, and also reveal that the main cause of the tripouts is back-flashover. Moreover, it turns o…
In this Paper, the lightning performance of the 150 kV transmission line in west Sumatera, Indoensia, is studied in details, showing that the lightning trip-out rate depends on the tower-footing resistance and the length of an arcing horn gap. the observed trip-out rate higher than 20 trip-outs/100km-year is in good agreement with the resulkt of the simulation by the IEEE FLASH program by using…