Artificial Intelligence (AI) is becoming a transformative force driving technological revolutions and industrial upgrades, marking an advanced phase of digital transformation across enterprises. The power industry, like many others, recognizes the immense potential of next-generation AI, such as large language models like ChatGPT, to revolutionize production methods and management frameworks. However, the integration of AI within power infrastructure still faces significant challenges, particularly in achieving deep integration and realizing scalable benefits. This research addresses these gaps by enhancing the integration of AI into core business processes, ultimately facilitating the large-scale digital transformation of power grids. As part of this effort, we have developed an automatic construction document generation tool powered by a large language model. This tool significantly reduces the workload for power infrastructure professionals, enhances grassroots productivity, and accelerates the development of an intelligent and efficient power system.