目前在牵引供电系统对电力系统的影响研究中,大多只单一对牵引供电系统建立详细仿真模型,而电力系统侧则是采用简化后的电路代替,缺乏一种实际电力系统与牵引供电系统的联合仿真模型,对电力系统–牵引供电系统的相互作用与影响认识不足...目前在牵引供电系统对电力系统的影响研究中,大多只单一对牵引供电系统建立详细仿真模型,而电力系统侧则是采用简化后的电路代替,缺乏一种实际电力系统与牵引供电系统的联合仿真模型,对电力系统–牵引供电系统的相互作用与影响认识不足。文中在牵引供电系统电磁仿真模型的基础上,基于电力系统全数字仿真装置(advanced digital power system simulator,ADPSS)搭建出了牵引供电系统与实际电网系统的机电–电磁暂态混合仿真模型,并将混合仿真计算结果与典型值相比较,验证了混合仿真的正确性,并研究分析了牵引供电系统负荷特性、牵引供电系统对电力系统的影响。展开更多
针对机电暂态程序仿真无法详细体现故障期间的暂态过程以及电磁暂态程序仿真对交流系统反映不足的问题,分析研究电磁暂态子网和机电暂态子网数据交互的电磁-机电暂态混合仿真。详细介绍了电磁-机电暂态混合仿真软件ADPSS以及基于ADPSS...针对机电暂态程序仿真无法详细体现故障期间的暂态过程以及电磁暂态程序仿真对交流系统反映不足的问题,分析研究电磁暂态子网和机电暂态子网数据交互的电磁-机电暂态混合仿真。详细介绍了电磁-机电暂态混合仿真软件ADPSS以及基于ADPSS的电磁-机电暂态混合仿真原理和流程。对±500 k V德宝直流实际算例分别进行了电磁暂态仿真、机电暂态仿真和电磁-机电暂态混合仿真,对比分析仿真结果,表明电磁-机电暂态混合仿真可以对较大规模电网的局部电磁暂态过程和交流系统响应进行有效分析,其仿真速度快,结果准确可靠。展开更多
In recent years, a large number of high voltage direct current(HVDC) transmission projects have been connected to AC systems. This has started to have an impact on AC/DC hybrid power grids, particularly receiving term...In recent years, a large number of high voltage direct current(HVDC) transmission projects have been connected to AC systems. This has started to have an impact on AC/DC hybrid power grids, particularly receiving terminal power grids. An HVDC system is a large-scale power electronic integrated nonlinear system, and it includes a primary system and a control and protection system. Hence, the precision and degree of detail of HVDC systems directly affect the actual effect of simulation. In recent years, in the case of the normal operation and failure of AC power grids, the abnormal fluctuation and even locking of HVDC systems caused by the inappropriate strategies of the control and protection system component have strongly affected power grids. This has significantly affected the safety and stability of receiving power grids and normal operation. In this study, the actual engineering HVDC control logic provided by a manufacturer is analyzed and simulated based on the user defined component library of the ADPSS electromagnetic transient calculation program, and an HVDC control model based on an actual system is established. The accuracy of the DC control custom model based on ADPSS is verified through the simulation of an actual power grid.展开更多
文摘目前在牵引供电系统对电力系统的影响研究中,大多只单一对牵引供电系统建立详细仿真模型,而电力系统侧则是采用简化后的电路代替,缺乏一种实际电力系统与牵引供电系统的联合仿真模型,对电力系统–牵引供电系统的相互作用与影响认识不足。文中在牵引供电系统电磁仿真模型的基础上,基于电力系统全数字仿真装置(advanced digital power system simulator,ADPSS)搭建出了牵引供电系统与实际电网系统的机电–电磁暂态混合仿真模型,并将混合仿真计算结果与典型值相比较,验证了混合仿真的正确性,并研究分析了牵引供电系统负荷特性、牵引供电系统对电力系统的影响。
文摘针对机电暂态程序仿真无法详细体现故障期间的暂态过程以及电磁暂态程序仿真对交流系统反映不足的问题,分析研究电磁暂态子网和机电暂态子网数据交互的电磁-机电暂态混合仿真。详细介绍了电磁-机电暂态混合仿真软件ADPSS以及基于ADPSS的电磁-机电暂态混合仿真原理和流程。对±500 k V德宝直流实际算例分别进行了电磁暂态仿真、机电暂态仿真和电磁-机电暂态混合仿真,对比分析仿真结果,表明电磁-机电暂态混合仿真可以对较大规模电网的局部电磁暂态过程和交流系统响应进行有效分析,其仿真速度快,结果准确可靠。
基金supported by National Key Research and Development Program of China-High performance analysis and situational awareness technology for interconnected power grids
文摘In recent years, a large number of high voltage direct current(HVDC) transmission projects have been connected to AC systems. This has started to have an impact on AC/DC hybrid power grids, particularly receiving terminal power grids. An HVDC system is a large-scale power electronic integrated nonlinear system, and it includes a primary system and a control and protection system. Hence, the precision and degree of detail of HVDC systems directly affect the actual effect of simulation. In recent years, in the case of the normal operation and failure of AC power grids, the abnormal fluctuation and even locking of HVDC systems caused by the inappropriate strategies of the control and protection system component have strongly affected power grids. This has significantly affected the safety and stability of receiving power grids and normal operation. In this study, the actual engineering HVDC control logic provided by a manufacturer is analyzed and simulated based on the user defined component library of the ADPSS electromagnetic transient calculation program, and an HVDC control model based on an actual system is established. The accuracy of the DC control custom model based on ADPSS is verified through the simulation of an actual power grid.
