采用能量型储能和功率型储能组成的混合储能系统平抑光伏输出功率波动。利用小波包分解可获取更多信号细节信息的优点,综合分析光伏功率信号的幅频特性、储能的性能特点,将光伏功率信号分解,得到光伏平抑目标功率和不同类型储能的充放...采用能量型储能和功率型储能组成的混合储能系统平抑光伏输出功率波动。利用小波包分解可获取更多信号细节信息的优点,综合分析光伏功率信号的幅频特性、储能的性能特点,将光伏功率信号分解,得到光伏平抑目标功率和不同类型储能的充放电功率。充分考虑实际工程应用中实时控制对运算速度的要求,并通过阈值判断补偿滤波延迟效应。采用模糊控制方法对功率型储能的荷电状态(state of charge,SOC)进行自适应控制,实现功率的优化分配,提高平抑效果。算例结果表明,所提控制策略能够充分利用不同类型储能的性能优势有效平抑光伏输出功率波动。展开更多
压缩空气储能(compressed air energy storage,CAES)是将电能转化为空气内能的一种储能方式,主要有传统压缩空气储能、先进绝热压缩空气储能(advanced adiabatic compressed air energy storage,AA-CAES)、超临界压缩空气储能和深冷液...压缩空气储能(compressed air energy storage,CAES)是将电能转化为空气内能的一种储能方式,主要有传统压缩空气储能、先进绝热压缩空气储能(advanced adiabatic compressed air energy storage,AA-CAES)、超临界压缩空气储能和深冷液化空气储能(cryogenic liquid air energy storage,LAES)等技术类型,其中LAES具有储能密度高、储能容量大、寿命长、无污染、不依赖于地理条件且建设周期短等优点,是能量型储能发展趋势之一。首先对CAES的发展历程与趋势进行了阐述,针对LAES的技术特点,开展了其在电网中的应用分析和展望,明确了LAES的应用场景及效率,最后根据系统关键技术和难点,指出了该技术未来一段时间的后续研究重点。展开更多
Fatty is one of the most important energy storage substances in the human body, and is an important source of energy in motion. It has 10 times bigger storage space than glycogen. Some studies suggest that in low to m...Fatty is one of the most important energy storage substances in the human body, and is an important source of energy in motion. It has 10 times bigger storage space than glycogen. Some studies suggest that in low to moderate intensity aerobic exercise, fat plays an important role providing energy. Especially when the movement lasts for more than 3 ~ 4h, energy provided by fat can account for 70% to 90% of total energy metabolism. Many people use many means and methods in order to increase the proportion of fat oxidation providing for energy in the movement and save glucose consumption in vivo, improving the body' s endurance. On the other hand, endurance exercise can burn fat properly, and play an important role to reduce accumulation of body fat, prevent hyperlipidemia and improve lipid levels.展开更多
For development of passenger electrical transport, it is necessary to use energy more rationally. One of methods of vehicle power efficiency increase is installation of on-board energy storage systems. For studying of...For development of passenger electrical transport, it is necessary to use energy more rationally. One of methods of vehicle power efficiency increase is installation of on-board energy storage systems. For studying of system operation, it is necessary to carry out a lot of experiments, therefore it is favorable to use the test bench and its computer model for reduction of the number of physical experiments. In this article, the results of computer modeling for the optimization of traction drive test bench by adjusting of the operation parameters of supercapacitor energy storage are described. Test bench operation is considered in cases of the energy storage system working at various selected supercapacitor initial voltages. Maximal increase of possibility of vehicle test bench regenerative braking with minimal decrease of autonomous power supply mode possibility is investigated. There is estimated the energy storage system efficiency improving measures dependence from supercapacitor operational voltage ranges. Parameters at which the minimum losses of energy are observed are revealed. Dependence of energy storage system discharge power on the most admissible supercapacitor current is established.展开更多
The iron and steel industry generally features the characteristics of large volume of energy consumption, multiple sorts of energy medium, complex secondary conversion, more recyclable extra energy, and the energy man...The iron and steel industry generally features the characteristics of large volume of energy consumption, multiple sorts of energy medium, complex secondary conversion, more recyclable extra energy, and the energy management of the field may involve the entire personnel, process and system, covering all links from designing, purchasing, energy storage, processing and conversion, distribution, energy use and extra energy recycling. The implementation guidelines summarizes the energy management experience and results and provide a systematic approach for the implementation of GB/T 23331-2012 and GB/T 29456-2012, sharing svstematic instructions and suggestions for the implementing paths and methods of creating, implementing, maintaining and improving the energy management system (EnMS) at the enterprise level.展开更多
A system of energy storage for solar thermal air conditioning combined with ejector cooling system for residential is determined in this paper. The purpose of this study is to design the energy storage system for heat...A system of energy storage for solar thermal air conditioning combined with ejector cooling system for residential is determined in this paper. The purpose of this study is to design the energy storage system for heating the water in a storage tank to reach the required temperature for exchanging heat with the refrigerant of cooling system. The design from calculation of thermal energy storage system that proper with the solar flat plate collector area results are 70 m2, and the hot water temperature is over than 80 ℃. A cooling system is selected for refrigerant of R141b from the solar air conditioning system of 10.5 kW, and the energy source is solar thermal energy from the collector that there is an efficiency of 0.46 approximately. This storage system for the electric solar cooling system can be reduced the problem of the intermittent of energy source with the constant generating temperature to run the cooling system continuously.展开更多
文摘采用能量型储能和功率型储能组成的混合储能系统平抑光伏输出功率波动。利用小波包分解可获取更多信号细节信息的优点,综合分析光伏功率信号的幅频特性、储能的性能特点,将光伏功率信号分解,得到光伏平抑目标功率和不同类型储能的充放电功率。充分考虑实际工程应用中实时控制对运算速度的要求,并通过阈值判断补偿滤波延迟效应。采用模糊控制方法对功率型储能的荷电状态(state of charge,SOC)进行自适应控制,实现功率的优化分配,提高平抑效果。算例结果表明,所提控制策略能够充分利用不同类型储能的性能优势有效平抑光伏输出功率波动。
文摘压缩空气储能(compressed air energy storage,CAES)是将电能转化为空气内能的一种储能方式,主要有传统压缩空气储能、先进绝热压缩空气储能(advanced adiabatic compressed air energy storage,AA-CAES)、超临界压缩空气储能和深冷液化空气储能(cryogenic liquid air energy storage,LAES)等技术类型,其中LAES具有储能密度高、储能容量大、寿命长、无污染、不依赖于地理条件且建设周期短等优点,是能量型储能发展趋势之一。首先对CAES的发展历程与趋势进行了阐述,针对LAES的技术特点,开展了其在电网中的应用分析和展望,明确了LAES的应用场景及效率,最后根据系统关键技术和难点,指出了该技术未来一段时间的后续研究重点。
文摘Fatty is one of the most important energy storage substances in the human body, and is an important source of energy in motion. It has 10 times bigger storage space than glycogen. Some studies suggest that in low to moderate intensity aerobic exercise, fat plays an important role providing energy. Especially when the movement lasts for more than 3 ~ 4h, energy provided by fat can account for 70% to 90% of total energy metabolism. Many people use many means and methods in order to increase the proportion of fat oxidation providing for energy in the movement and save glucose consumption in vivo, improving the body' s endurance. On the other hand, endurance exercise can burn fat properly, and play an important role to reduce accumulation of body fat, prevent hyperlipidemia and improve lipid levels.
文摘For development of passenger electrical transport, it is necessary to use energy more rationally. One of methods of vehicle power efficiency increase is installation of on-board energy storage systems. For studying of system operation, it is necessary to carry out a lot of experiments, therefore it is favorable to use the test bench and its computer model for reduction of the number of physical experiments. In this article, the results of computer modeling for the optimization of traction drive test bench by adjusting of the operation parameters of supercapacitor energy storage are described. Test bench operation is considered in cases of the energy storage system working at various selected supercapacitor initial voltages. Maximal increase of possibility of vehicle test bench regenerative braking with minimal decrease of autonomous power supply mode possibility is investigated. There is estimated the energy storage system efficiency improving measures dependence from supercapacitor operational voltage ranges. Parameters at which the minimum losses of energy are observed are revealed. Dependence of energy storage system discharge power on the most admissible supercapacitor current is established.
文摘The iron and steel industry generally features the characteristics of large volume of energy consumption, multiple sorts of energy medium, complex secondary conversion, more recyclable extra energy, and the energy management of the field may involve the entire personnel, process and system, covering all links from designing, purchasing, energy storage, processing and conversion, distribution, energy use and extra energy recycling. The implementation guidelines summarizes the energy management experience and results and provide a systematic approach for the implementation of GB/T 23331-2012 and GB/T 29456-2012, sharing svstematic instructions and suggestions for the implementing paths and methods of creating, implementing, maintaining and improving the energy management system (EnMS) at the enterprise level.
文摘A system of energy storage for solar thermal air conditioning combined with ejector cooling system for residential is determined in this paper. The purpose of this study is to design the energy storage system for heating the water in a storage tank to reach the required temperature for exchanging heat with the refrigerant of cooling system. The design from calculation of thermal energy storage system that proper with the solar flat plate collector area results are 70 m2, and the hot water temperature is over than 80 ℃. A cooling system is selected for refrigerant of R141b from the solar air conditioning system of 10.5 kW, and the energy source is solar thermal energy from the collector that there is an efficiency of 0.46 approximately. This storage system for the electric solar cooling system can be reduced the problem of the intermittent of energy source with the constant generating temperature to run the cooling system continuously.