This paper proposes a distributed real-time state estimation(RTSE)method for the combined heat and power systems(CHPSs).First,a difference-based model for the heat system is established considering the dynamics of hea...This paper proposes a distributed real-time state estimation(RTSE)method for the combined heat and power systems(CHPSs).First,a difference-based model for the heat system is established considering the dynamics of heat systems.This heat system model is further used along with the power system steady-state model for holistic CHPS state estimation.A cubature Kalman filter(CKF)-based RTSE is developed to deal with the system nonlinearity while integrating both the historical and present measurement information.Finally,a multi-timescale asynchronous distributed computation scheme is designed to enhance the scalability of the proposed method for largescale systems.This distributed implementation requires only a small amount of information exchange and thus protects the privacy of different energy systems.Simulations carried out on two CHPSs show that the proposed method can significantly improve the estimation efficiency of CHPS without loss of accuracy compared with other existing models and methods.展开更多
基于质量平衡和能量平衡的原理,分析并网式燃气内燃机热电联供系统（combined heat and power system,CHPs）各个部分,即燃气内燃机、余热换热器、蓄水箱、余热锅炉和燃气锅炉的工作原理及动态特性,并针对各个模块外部输入和输出参数,...基于质量平衡和能量平衡的原理,分析并网式燃气内燃机热电联供系统（combined heat and power system,CHPs）各个部分,即燃气内燃机、余热换热器、蓄水箱、余热锅炉和燃气锅炉的工作原理及动态特性,并针对各个模块外部输入和输出参数,分别建立能在可调范围内实现变工况运行的非线性时域模型。将各个模块的模型依次进行处理和连接,并在Matlab/Simulink的平台上进行动态仿真分析。结果表明,在可接受误差范围内,该模型对于CHPs热电交互影响的动态模拟分析具有准确性。展开更多
基金supported by the Science and Technology Project of State Grid Corporation of China(No.52060019001H)。
文摘This paper proposes a distributed real-time state estimation(RTSE)method for the combined heat and power systems(CHPSs).First,a difference-based model for the heat system is established considering the dynamics of heat systems.This heat system model is further used along with the power system steady-state model for holistic CHPS state estimation.A cubature Kalman filter(CKF)-based RTSE is developed to deal with the system nonlinearity while integrating both the historical and present measurement information.Finally,a multi-timescale asynchronous distributed computation scheme is designed to enhance the scalability of the proposed method for largescale systems.This distributed implementation requires only a small amount of information exchange and thus protects the privacy of different energy systems.Simulations carried out on two CHPSs show that the proposed method can significantly improve the estimation efficiency of CHPS without loss of accuracy compared with other existing models and methods.
文摘基于质量平衡和能量平衡的原理,分析并网式燃气内燃机热电联供系统（combined heat and power system,CHPs）各个部分,即燃气内燃机、余热换热器、蓄水箱、余热锅炉和燃气锅炉的工作原理及动态特性,并针对各个模块外部输入和输出参数,分别建立能在可调范围内实现变工况运行的非线性时域模型。将各个模块的模型依次进行处理和连接,并在Matlab/Simulink的平台上进行动态仿真分析。结果表明,在可接受误差范围内,该模型对于CHPs热电交互影响的动态模拟分析具有准确性。
