Energy is an important foundation for human production and life, and with the increasing global energy demand and the aggravation of climate change, the search for greener, more sustainable energy alternatives has become a pressing issue in today's society. In this context, photovoltaic energy storage integration of zero-carbon energy system as a new type of energy supply options, much attention and exploration. Especially in industrial parks, where a large amount of energy is consumed, the application of integrated photovoltaic energy storage system can not only increase energy self-sufficiency rate, but also reduce carbon emissions, which has great potential and practical significance. Therefore, this paper takes the zero-carbon energy system of integrated photovoltaic energy storage in industrial park as the research object, discusses its application and development, the purpose is to provide beneficial reference and reference for promoting the realization of zero-carbon energy and the optimization of energy management in industrial parks.
First, principle and development status of photovoltaic and energy storage technology
1. The principle and development of photovoltaic technology
Photovoltaic technology is a technology that converts solar energy into electricity by using the photoelectric effect of List of semiconductor materials to convert sunlight into direct current. In a photovoltaic cell, which consists of two layers of semiconductors of different materials, when light strikes the interface between the two layers, photons can stimulate electrons from low to high energy levels, resulting in a potential difference, to form an electric current.
2. The principle and development status of energy storage technology
Energy storage technology refers to the energy into storage form, and when necessary re-conversion into energy technology. Its main principle is to convert electrical, mechanical, chemical and thermal energy into storage, such as batteries, supercapacitors, Compressed air, hydraulic and thermal storage. At present, energy storage technology has become an important supporting technology for renewable energy, mainly used in balancing energy supply and demand, improving the quality of energy supply, improving efficient energy use and coping with peak energy demand. With the development of technology and the development of application scenarios, the application prospect of energy storage technology is more and more broad.
Second, the necessity and importance of zero-carbon energy system construction in industrial parks
Industrial Park is a regional economic organization form with industry as the leading, centralized, intensive and coordinated development. Because the industrial park has the characteristics of large scale, high energy consumption and concentrated energy consumption, its demand for energy is very large. Traditional energy supply methods, such as coal-fired power generation and oil-fired power generation, can not meet the increasing demand for energy, and will have a large negative impact on the environment, exacerbating the global climate change problem. In order to achieve the sustainable development of industrial parks, protect the environment, reduce energy consumption, the construction of zero-carbon energy system has become a necessary choice. Zero-carbon energy systems can not only meet the energy needs of industrial parks, but also integrate renewable energy, energy storage, energy management and other technologies to achieve efficient energy use and economic operation, it can also reduce greenhouse gas emissions and environmental pollution and achieve sustainable development.
Third, the planning of zero-carbon energy system of integrated photovoltaic energy storage in industrial park
1. Planning of photovoltaic power generation systems
For the installation of PV system, the ground installation is generally suitable for the industrial park with more land, and the roof installation can effectively use the roof space of the industrial park plant, saving land resources. In addition, solar Building-integrated photovoltaics could be used to integrate solar cells into the building's exterior walls or roof structure, allowing for the integration of photovoltaic power and the building to improve space efficiency. According to the choice of energy storage system, the integrated photovoltaic energy storage system in industrial park can use different types of energy storage equipment, such as battery pack, Super Capacitor. The battery pack has high energy density and long-term storage capacity, while the super capacitor has the characteristics of fast charge, long life and simple maintenance. In the design of energy storage system, it is necessary to consider the demand of output power and load of photovoltaic power generation system, and to select appropriate energy storage equipment and energy storage capacity in order to achieve the optimal operation state of integrated photovoltaic energy storage system. For the choice of monitoring and management system, it is necessary to choose high-reliability and high-precision monitoring equipment, such as UAV, iot, big data, etc. . At the same time, it is necessary to design a reasonable operation management scheme, including equipment maintenance, troubleshooting, operation scheduling, etc. , to ensure the efficient operation of the system.
2. Energy storage system planning
The energy storage system is planned to ensure that the system can store and release energy when needed, and to balance the volatility of photovoltaic power generation to meet the needs of industrial parks. The planning of energy storage system needs to consider many factors, including the type of energy storage system, energy storage capacity, energy storage efficiency and energy storage time. The types of energy storage systems can be selected according to the power load and characteristics of the park, such as battery storage, ultracapacitor storage, Compressed air storage, hydraulic storage, etc. . Different types of energy storage systems have different characteristics and applicable scenarios, should be based on the actual demand to choose. The storage capacity should be sufficient to meet the park's maximum load, to ensure that the storage system can provide enough electricity in the event of a photovoltaic power shortage. Energy storage efficiency determines the loss of energy storage and release, so it is necessary to select efficient energy storage equipment and control system to improve the efficiency of energy storage system. Energy storage time should be determined according to the characteristics of the power load and photovoltaic power generation to ensure that the energy storage system can meet the power demand of the park. In addition to the above factors, energy storage system planning also needs to consider the system reliability, safety, cost and maintenance. The equipment and control system of energy storage system with high reliability, good safety, low cost and easy maintenance should be selected to ensure the long-term stable operation of the system. To sum up, energy storage system planning is a complex process, needs to be based on the park's electricity load and energy demand to determine, at the same time, the type, capacity, efficiency, time, reliability, safety, cost and maintenance of the energy storage system are considered to ensure the long-term stable operation of the system, provide efficient and reliable zero-carbon energy services for industrial parks.
3.Planning for an energy management system
Intelligent Energy Management System is an indispensable part of the photovoltaic energy storage integration zero-carbon energy system. It can realize the optimal control of the system by real-time monitoring and analysis of the photovoltaic power generation and energy storage system, and improve the operation efficiency and energy utilization efficiency of the system. The main functions of energy management system include data acquisition, data analysis, control regulation, fault diagnosis and maintenance management. In the aspect of data acquisition, energy management system can realize real-time monitoring and data acquisition of photovoltaic power generation system and energy storage system, and obtain data of system operation status, energy output, energy consumption and so on. In the aspect of data analysis, the energy management system can process and analyze the data, discover the problems in the system and optimize the space, and provide decision-making basis for the system operation and management. In the aspect of control and regulation, energy management system can realize the coordinated operation between photovoltaic power generation and energy storage system, and manage and dispatch the generation, storage, distribution and use of energy. In the aspect of fault diagnosis and maintenance management, energy management system can realize fault diagnosis and maintenance management, and improve the reliability and security of the system. In addition to the basic functions mentioned above, the energy management system can also realize remote monitoring and operation, and realize remote monitoring and management of photovoltaic energy storage systems around the world through cloud computing and Internet of Things Technology. At the same time, energy management system can also improve system performance and energy efficiency through artificial intelligence, big data analysis and other advanced technologies.
In this paper, the application of integrated zero-carbon energy system of photovoltaic energy storage in industrial park is studied, and the key technologies and implementation methods of photovoltaic power generation, energy storage system and energy management system are analyzed systematically, the technical realization, system design and optimization methods are discussed in detail. We believe that the planning and design ideas presented in this paper can provide new ideas and methods for clean energy development under similar application scenarios. In the future, we will further improve the research on photovoltaic energy storage integration with zero-carbon energy systems, strengthen the integration with practical projects, and promote the application and promotion of clean energy, to make a greater contribution to the sustainable development of global energy.
