# Knowledge-Graph-Based Integrated Line Loss Evaluation Management System
## 1 Introduction  
The decision to achieve a peak in carbon emissions and carbon integration represents a significant strategic choice made by the state with the objective of coordinating the overall situation at home and abroad. Effective line loss management is a crucial aspect of the country's overall development, particularly in relation to the advancement of the power grid. The entire process of electricity flowing from the power plant through transformers, substations, transmission mains and distribution networks, and electrical equipment can be conceptualized as a large-scale AC circuit, comprising a variety of electrical equipment. With regard to the equipment in question, it should be noted that both transmission lines and electrical equipment exhibit a certain degree of resistance. The passage of current through the energy transmission medium gives rise to the generation of heat due to the resistance encountered, thereby resulting in losses. Concurrently, the current in the power transmission network is alternating current, and the iron components in the transformer equipment will be influenced by the alternating electromagnetic field. In the iron core, the alternating electromagnetic field will give rise to eddy currents and hysteresis. It is possible to reduce the energy loss generated by this process by improving the technical standards of the transformer equipment. However, this particular form of loss cannot be avoided. In terms of technical design, the occurrence of corona phenomena is a common phenomenon near high-voltage transmission lines. This is due to the presence of a number of factors, including the radius of the transmission line cross-section, the density of the air around the transmission line, the presence of aerosols around the transmission line, and the physical properties of the medium around the transmission line. Corona losses have a considerable impact on the normal functioning of the power grid and the economics of grid operation. In the process of selecting equipment, it is possible for capacitive currents to occur between conductors, particularly in the case of high-voltage transmission lines. Concurrently, insulators are subjected to the effects of the electric field, temperature, and environmental variables over extended periods of operation, leading to a decline in insulation efficacy and an augmentation in power loss. In the context of management planning, power losses resulting from inadequate power dispatching, delayed data collection on power consumption at the border, inaccuracies in power meters, and power theft by users are also classified as line losses. The term \"line losses\" encompasses both the power loss caused by the equipment itself and the technical management thereof. In accordance with the stipulations set forth by the power grid company, the discrepancy between the settlement value of the on-grid power transmitted from the power plant to the power grid and the settlement value of the user's power consumption is defined as the power grid line loss. The line loss rate can be defined in two ways: as the ratio of the active power loss of the power grid to the total power transmitted by the line, or as the ratio of the difference between the supply and sales of electricity to the total transmission. To a certain extent, the level of line loss can serve as an indicator of the technical and managerial proficiency of the power company responsible for the operation of the power grid [1]. It can be reasonably deduced that the implementation of grid management has the potential to facilitate technological advancement and innovation within the power industry. Furthermore, it can be expected that this will result in the industry becoming increasingly intelligent, digital, efficient, and environmentally friendly, while simultaneously enhancing its overall competitiveness and core competitiveness [2; 3]. At present, the evaluation methods and indicators employed by power grid companies for the management of line loss have disparate foci.