Innovative Mechanized Stringing Method for Manual Sections in Transmission Lines Reducing Manpower, Enhancing Safety, and Improving Efficiency

The rapid expansion of India’s transmission network, driven by large-scale renewable integration and inter-regional power transfer requirements, has resulted in widespread deployment of 765 kV double-circuit (D/C) transmission lines. While conventional tension stringing methods are well established, a significant proportion of line sections—commonly termed manual sections—cannot accommodate standard stringing equipment due to terrain constraints, urban congestion, road and railway crossings, proximity to energized lines, or rightof-way limitations. In India, such manual sections are traditionally executed using pulley-based systems, most notably the LIFTY method, involving extensive tower-top operations, high manpower deployment, and prolonged execution time. [3] [6]