## 1 Introduction  
Carbon emissions in the power industry account for a high proportion within the energy industry, and distribution loss is an important source of carbon emissions [1]. Decarbonization in the power industry is the top priority, and green transformers will become a key piece of electrical equipment for energy efficiency and emissions reduction in the process of achieving the goal of \"double carbon\". The main technical characteristics of green transformers are energy savings, material savings, and environmental protection. The green manufacturing of transformers requires that transformers and their components meet the requirements of low energy consumption, a high material utilization rate, and low waste in production [2]. Therefore, how to realize the green development of the transformer manufacturing industry has become an urgent issue facing the whole industry. As an important part of a transformer, the conventional production process of a transformer core is shown in Figure 1. The slitting machine cuts the silicon steel coil into semi products of a certain width along the longitudinal direction; the cross-cutting machine cuts the semi products into pieces of the required shape; and, finally, the pieces of sheets are stacked into transformer cores in accordance with the prescribed sequence. Blanking refers to cutting the silicon steel coil into semi products of a certain width along the longitudinal direction; it is the first step in the production process of a transformer core. Scheduling refers to determining the width of the semi products according to the demand of customers' orders; it is the key to blanking. In the current transformer core production process, scheduling is usually calculated manually one by one; thus, the workload is heavy, the efficiency is low, and the utilization rate of the silicon steel coils is not maximized. Increasingly,the personalized transformer core market demand, characterized by multiple varieties and small batches, also poses new challenges for manual scheduling. Therefore, blanking scheduling must be more intelligent and leaner to reduce production costs, improve production efficiency, and quickly respond to the changing market demand. [PERSON] [3] focused on the design and realization of a magnetic circuit of a transformer operating at a nominal voltage of 10 kV and in a frequency range from 200 Hz up to 10 kHz. [PERSON] [4] presented an automatic on-load voltage-regulating distributing transformer that employed a noncontact solid-state relay as a tap-changer and introduced its structure, the basic principal, and the design methods of each key link. [PERSON] [5] proposed a simulation test system for a noncontact D-dot transformer for voltage measurement, which consisted of a D-dot transformer, a signal processing circuit, and a ground PC port. [PERSON] [6] presented a new approach for the study of the behavior of a new three-phase high-voltage power supply for magnetrons in a nonlinear regime, which is used for microwave generators in industrial applications. [PERSON] [7] constructed a transformer model considering the saturation of the steel of the core, which differed from standard models. [PERSON] [8] presented an improved conceptual design option of an equipotential shielding capacitor voltage transformer to improve the shielding effect without an increase in the shielding capacitance. [PERSON] [9] analyzed the winding voltages, inrush currents, and flux density inside the core of each transformer. [PERSON] [10] presented a circuit evolution of the high step-ratio transformer-coupled RMMC into its low step-ratio transformer-less RMMC counterpart. [PERSON] [11] designed a compact solution for an energy collections system that allowed for a minimum of total transformer weight. It is obvious that all these studies on transformers made great contributions to structure, principle, and design methods to improve their performance.