Electricity generation is a major contributor to carbon emissions in the power system. However, the current carbon emission reduction strategies focus mostly on the production and consumption aspects of the power industry, without taking into account the potential for reducing emissions through the use of power transmission and transformation equipment.This paper investigates the carbon emission efficiency of power transmission and transformation equipment by combining Life Cycle Assessment (LCA) and Data Envelopment Analysis (DEA). First, data related to the power transmission and transformation projects are collected, organized, and cleaned to set weights for different stages of the equipment life cycle. Then, a whole life cycle total factor carbon emission efficiency measurement model (e-LCA-SBM model) of power transmission and transformation equipment is constructed to measure the total factor carbon emission efficiency of the equipment. The results show that the whole life cycle carbon efficiency is modest in the equipment with lower whole life cycle fixed capital investment, and vice versa. This study can provide a reference for selecting equipment with higher carbon emission efficiency and reducing carbon emissions.

There are various forms of foundation used in transmission line engineering, which can be divided into undisturbed soil foundation and non-undisturbed soil foundation according to the form of stress. In view of the geological condition that the upper layer has a thick overburden and the lower layer is rock, the composite bolt foundation is recommended to make full use of its upper undisturbed soil.

The selection of insulator is analyzed and studied in detail in combination with climate and pollution.In this paper, several comparison and selection schemes are studied in detail from the aspects of electrical performance, mechanical performance, economic performance and so on. Through the analysis of the whole life cycle and the combination of the actual situation of the project, the reasonable selection of insulators is carried out to make use of insulators to reach the optimal.

Micro-pile is a kind of small diameter bored piles, also known as root pile, pile diameter is generally 150-400mm, length-diameter ratio is generally greater than 30,and pile length is usually not more than 30m. Compared with ordinary pile, micro-pile has the advantages of fast construction speed, small working surface, high bearing capacity and small settlement.

Intelligent integration has been basically achieved in transmission line design in developed countries, while the current management design level in this field in China is backward and inefficient. According to the characteristics of the pilot transmission line project, it is necessary to build a transmission line 3D design application system based on the grid GIS cloud platform with the advantages of webgl cross platform and without installing plug-ins, to assist in the application of transmission line 3D design, and to develop the interface with professional line 3D design software, so as to realize the smooth operation of GIS elevation and image information and other information such as line selection and capital collection. Experiments prove that the construction of transmission line three-dimensional design application system based on grid GIS cloud platform provides a set of simple, fast, convenient and intelligent and efficient three-dimensional design support for planners and designers. It is an effective means for modern power enterprises to improve management design level and work efficiency, and has great significance in economic and social benefits.