Finite Element Modeling of 400 kV ERS Bypass Transmission Line Quantifying Installation Difficulty

Economics of the power system infrastructure is critically dependent on the reliable transmission network. Steel make emergency restoration structure was designed and developed for emergency by-pass of the 400 kV line tower damaged by severe weather condition and soil erosion at the river bed. The emergency restoration system (ERS) was developed to have a wider base arrangement to absorb and distribute the loads on the sandy land of a dried river bed. Finite element analysis (FEA) was conducted on Catia V5R20 to analyze the load on the tower due to weather and estimate the numbers of guyed and maximum angle for the tower. Moreover, 32 numbers of guyed wire required to support the tower at height of 36 m to counter the transverse and lateral load for the span of 475 m and 275 m ensuring safety and electrical clearances to avoid line trip. Site challenges of the continuous stream to erode the base of the tower and raising water level have been discussed in the paper.