The potential of load identification and regulation in the textile industry

Firstly, this paper introduces the daily load characteristics and annual load characteristics of the textile industry and points out that the electricity load of the textile industry shows obvious seasonal changes. There is a certain degree of randomness. Then, this paper analyzes the behavior characteristics of electricity consumption in the textile industry, including the behavior mode of electricity consumption and the characteristics of electric equipment. It points out that the textile industry has a certain potential and space in energy utilization. Finally, this paper focuses on the load regulation situation of the textile industry and summarizes the load proportion, regulation mode, regulation time, and adjustable load proportion of the textile industry. This paper studies and discusses the energy utilization and load control of the textile industry, which has certain theoretical and practical significance.


Introduction
With the acceleration of the industrialization process, the textile industry, as one of the traditional manufacturing fields, is facing more and more complex problems of electrical load identification [1][2][3] and adjustment potential judgment in the production process [4][5][6] .In the textile industry [7] , electrical load identification and regulation is a key technical means which can realize the monitoring and mastery of key information such as power consumption, electrical equipment status, and equipment operation efficiency in the production process.This is of great significance for enterprises to reduce energy consumption, improve production efficiency, reduce production costs, and improve product quality.
The study of electrical load identification and regulation potential is a challenging task in the textile industry.In the textile production process, there is much electrical equipment involved, including spinning machines, looms, dyeing machines, printing machines, dryers, etc.The equipment has different electrical characteristics and load states.At the same time, the load characteristics of the equipment will also change with time, environment and product types, and other factors.Therefore, for accurate load identification and potential regulation judgment of different electrical equipment, it is necessary to take into account a variety of factors, such as equipment types, operating states, and load changes.
In addition, the load identification method proposed in this study can not only be applied to the textile industry but also can be extended to the field of electrical load identification in other industries.For example, mechanical equipment load identification in industrial production, power system load identification in buildings, and other fields can be implemented using similar methods.Therefore, the load identification method of this study has a wide range of application value and promotion significance.

Daily load characteristic
The shape of the daily load curve can reflect the electricity consumption law of the textile industry.The shape of the daily load curve is relatively flat, indicating that the electricity consumption of the textile industry is relatively stable without obvious peak and valley periods.Secondly, the shape of the daily load curve is relatively flat, indicating that the electricity consumption of the textile industry is relatively stable without obvious peak and valley periods.According to the annual load curve of textile enterprises, it can be found that textile enterprises are continuous production enterprises with relatively balanced production throughout the year and relatively stable loads during the year.Affected by the temperature, the load peak of textile enterprises mainly appears in summer, while the load is relatively low in winter.

Electrical behavior characteristics
The textile industry needs a large number of electric motors, air conditioning, lighting, and other equipment in the production process, so the demand for electricity is more specific.The electricity consumption behavior patterns of the textile industry mainly include the following.

The stability of the electricity load is strong.
The production line in the textile industry usually adopts the continuous production method for production, so it is necessary to maintain a relatively stable electricity load in the production process.This stability is also reflected in the higher stability requirements of voltage and frequency in textile enterprises.

Most of the equipment is used 24 hours a day with a uniform daily load.
It is mainly suitable for peak shaving, instantaneous cutting and turning cloth machines, dewatering machines, and opening machine.Each process link is relatively independent, and there is basically no time limit matching requirement between links.The lead time is short, so it has the conditions for carrying out valley filling response.

The production process of the textile industry requires a large number of electric motors.
It requires air conditioning, lighting, and other equipment.The demand for electricity is very special, so it is more affected by temperature.

2.3.4.
Spring and summer are the peak seasons for the textile industry, especially in clothing and home textiles, where textile consumption is large.At this time, the production line of textile enterprises usually runs more abundant, and the production and sales load are higher.Autumn and winter are the off-season for the textile industry when consumers have less demand for clothing and home textiles due to colder weather.At this time, the production and sales load of textile enterprises will decrease.

Research on the potential of load regulation in the textile industry
The main electrical equipment in the textile industry is shown in the following table.
Table 1.Main electrical equipment of the textile industry Categories Main electrical equipment

Main production load
Warping machine, weaving machine, opening machine, turning machine, dewatering machine Auxiliary production load Workshop ventilation axial fan Unproductive load Office lighting, split, and central air conditioning system, domestic electricity The textile industry can adjust the equipment for the loom, warping machine, turning cloth machine, dewatering machine, and opening machine in five categories.Each process link is relatively independent, the lead time is short, and there is basically no time limit matching requirements between links.On the premise of meeting the capacity is not saturated, the valley filling response can be carried out through reasonable arrangement of the upper and lower links.
Most of the equipment in the printing and dip-dyeing process is used 24 hours a day with a uniform daily load.It is mainly suitable for peak cutting, instantaneous cutting and turning cloth machines, dewatering machines, and opening machines.Each process link is relatively independent, and there is basically no time limit matching requirement between links.The lead time is short, so it has the conditions for carrying out valley filling response.Textile equipment basically cannot continuously adjust a single piece of equipment, so the load increases with the number of production equipment, and the power control means manual direct switching equipment.Through equipment research, the power control target is achieved mainly by manually shutting down five types of equipment a loom, warping machine, opening machine, turning cloth machine, and dewatering machine.
The constraint conditions are the inventory capacity limit of the controlled link: where t DR is the response duration, and Q store is the current inventory capacity of the controlled link.

Weaving machine
The adjustment mode is manual adjustment inside the industrial enterprise.The adjustment time can be closed for 60 min, and the single adjustment capacity is 4 kW.The impact of production is to make the weaving link temporarily stopped, and its adjustment time is in seconds.

Warping machine
The adjustment mode is manual adjustment inside the industrial enterprise.The adjustment time can be closed for 60 min, and the single adjustment capacity is 7.5 kW.The impact of production is to make the warping link temporarily stopped, and its adjustment time is in seconds.

Opening the machine
The adjustment mode is manual adjustment inside the industrial enterprise, and the adjustment time can be closed for 60 min.The single adjustment capacity of different models is 5 kW or 23 kW, respectively.The influence on production is temporarily stopping the opening link, and the adjustment time is in seconds.

Turning machine
The adjustment mode is manual adjustment inside the industrial enterprise.The adjustment time can be closed for 60 min, and the single adjustment capacity is 2.5 kW.The influence on production is temporarily stopping the cloth turning link, and the adjustment time is in seconds.

Dewatering machine
The adjustment mode is manual adjustment inside the industrial enterprise.The adjustment time can be closed for 60 min, and the single adjustment capacity is 15 kW.The influence on production is to temporarily stop the dehydration link, and the adjustment time is in minutes.

Conclusion
In conclusion, this paper has provided a comprehensive analysis of the daily and annual load characteristics of the textile industry, highlighting the seasonal variations and random nature of electricity load in this sector.The study has also examined the behavior characteristics of electricity consumption, including consumption patterns and equipment characteristics, revealing the untapped potential and opportunities for energy utilization in the textile industry.Furthermore, the research has focused on load regulation in the textile industry, summarizing key aspects such as load proportion, regulation mode, regulation time, and adjustable load proportion.These findings shed light on the energy management and load control strategies that can be implemented to optimize energy consumption in the textile industry.Overall, this study contributes to the theoretical understanding and practical implementation of energy utilization and load control in the textile industry.The insights and recommendations presented in this paper can serve as a valuable resource for industry practitioners, policymakers, and researchers seeking to enhance energy efficiency and sustainability in the textile sector.

Figure 1 .Figure 2 .
Figure 1.Daily load curve of typical textile enterprisesThe graph above shows the daily load curve of a textile enterprise.The daily load curve is relatively stable throughout the day, and the enterprise may produce continuously for 24 hours.

Table 2 .
Textile industry load regulation situation table