Electric power is widely used as the main energy source of ship integrated power system(SIPS), which contains power network and electric power network. SIPS network reconfiguration is a non-linear large-scale problem....Electric power is widely used as the main energy source of ship integrated power system(SIPS), which contains power network and electric power network. SIPS network reconfiguration is a non-linear large-scale problem. The reconfiguration solution influences the safety and stable operation of the power system. According to the operational characteristics of SIPS, a simplified model of power network and a mathematical model for network reconfiguration are established. Based on these models, a multi-agent and ant colony optimization(MAACO) is proposed to solve the problem of network reconfiguration. The simulations are carried out to demonstrate that the optimization method can reconstruct the integrated power system network accurately and efficiently.展开更多
The paper deals with the selected problems of electric power quality in ships’ modern systems. In the introduction the fundamentals of electric power quality assessment, such as the relations and consequences among p...The paper deals with the selected problems of electric power quality in ships’ modern systems. In the introduction the fundamentals of electric power quality assessment, such as the relations and consequences among power quality phenomena and indices, secondly as the methods and tools as well as the appropriate instrumentation, have been shortly presented. Afterwards, the basic characteristic of power systems on modern ships has been given. The main focus of the paper is put on the assessment of electric power quality in ships’ systems fitted with converter subsystems. The state of the art and actual tendencies in the discussed matter have been shown. Some chosen experimental results, based on the research carried out under supervision of the author, have been presented, too. Finally, some concluding issues have been shortly commented on.展开更多
The most dangerous places in ships are their power plants. Particularly, they are very unsafe for operators carrying out various necessary operation and maintenance activities. For this reason, ship machinery should b...The most dangerous places in ships are their power plants. Particularly, they are very unsafe for operators carrying out various necessary operation and maintenance activities. For this reason, ship machinery should be designed to ensure the maximum safety for its operators. It is a very difficult task. Therefore, it could not be solved by means of conventional design methods, which are used for design of uncomplicated technical equipment. One of the possible ways of solving this problem is to provide appropriate tools, which allow us to take the operator's safety into account during a design process, especially at its early stages. A computer-aided system supporting design of safe ship power plants could be such a tool. This paper deals with developing process of a prototype of the computer-aided system for hazard zone identification in ship power plants.展开更多
大规模分布式船舶储能系统(distributed energy storage system,DESS)可提高船舶微电网的冗余并保证运行安全。然而,不确定的船舶运行环境容易导致分布式储能运行特性不一致。在此背景下,该文提出一种含状态耦合约束的分布式船舶储能系...大规模分布式船舶储能系统(distributed energy storage system,DESS)可提高船舶微电网的冗余并保证运行安全。然而,不确定的船舶运行环境容易导致分布式储能运行特性不一致。在此背景下,该文提出一种含状态耦合约束的分布式船舶储能系统两层能量管理策略。首先,计及不确定航运环境影响,建立船舶储能系统寿命-功率特性耦合模型,量化其在不同循环寿命下的最大可用功率范围。随后,建立分布式储能系统两层能量管理策略,结合长时间尺度节能调度与短时间尺度功率分配控制,减少多时间尺度下不确定航运环境的影响;最终,通过HiL硬件在环实时仿真系统验证所提方法,与两种传统的能量管理方法相比,所提方法能够保证每个储能系统运行在安全出力范围内,且燃油经济性提高20.8%,微网母线电压暂降偏差最高降低73.5%。展开更多
基金supported by the National Natural Science Foundation of China (4177402141974005)。
文摘Electric power is widely used as the main energy source of ship integrated power system(SIPS), which contains power network and electric power network. SIPS network reconfiguration is a non-linear large-scale problem. The reconfiguration solution influences the safety and stable operation of the power system. According to the operational characteristics of SIPS, a simplified model of power network and a mathematical model for network reconfiguration are established. Based on these models, a multi-agent and ant colony optimization(MAACO) is proposed to solve the problem of network reconfiguration. The simulations are carried out to demonstrate that the optimization method can reconstruct the integrated power system network accurately and efficiently.
文摘The paper deals with the selected problems of electric power quality in ships’ modern systems. In the introduction the fundamentals of electric power quality assessment, such as the relations and consequences among power quality phenomena and indices, secondly as the methods and tools as well as the appropriate instrumentation, have been shortly presented. Afterwards, the basic characteristic of power systems on modern ships has been given. The main focus of the paper is put on the assessment of electric power quality in ships’ systems fitted with converter subsystems. The state of the art and actual tendencies in the discussed matter have been shown. Some chosen experimental results, based on the research carried out under supervision of the author, have been presented, too. Finally, some concluding issues have been shortly commented on.
文摘The most dangerous places in ships are their power plants. Particularly, they are very unsafe for operators carrying out various necessary operation and maintenance activities. For this reason, ship machinery should be designed to ensure the maximum safety for its operators. It is a very difficult task. Therefore, it could not be solved by means of conventional design methods, which are used for design of uncomplicated technical equipment. One of the possible ways of solving this problem is to provide appropriate tools, which allow us to take the operator's safety into account during a design process, especially at its early stages. A computer-aided system supporting design of safe ship power plants could be such a tool. This paper deals with developing process of a prototype of the computer-aided system for hazard zone identification in ship power plants.
文摘大规模分布式船舶储能系统(distributed energy storage system,DESS)可提高船舶微电网的冗余并保证运行安全。然而,不确定的船舶运行环境容易导致分布式储能运行特性不一致。在此背景下,该文提出一种含状态耦合约束的分布式船舶储能系统两层能量管理策略。首先,计及不确定航运环境影响,建立船舶储能系统寿命-功率特性耦合模型,量化其在不同循环寿命下的最大可用功率范围。随后,建立分布式储能系统两层能量管理策略,结合长时间尺度节能调度与短时间尺度功率分配控制,减少多时间尺度下不确定航运环境的影响;最终,通过HiL硬件在环实时仿真系统验证所提方法,与两种传统的能量管理方法相比,所提方法能够保证每个储能系统运行在安全出力范围内,且燃油经济性提高20.8%,微网母线电压暂降偏差最高降低73.5%。
