电站局部多机条件下五阶发电机哈密顿模型

发布时间：2018-03-29 11:35

本文选题：局部多机系统　切入点：电磁暂态　出处：《中国电机工程学报》2014年03期

【摘要】：在多机条件下,发电机d、q轴电压电流的变化正是反映本机与其它机组之间耦合特性的重要参数之一。该文建立了包含d、q轴电磁暂态的五阶发电机哈密顿模型,为更好地揭示多机耦合作用的内部动力学机制奠定基础。依据机电分析动力学理论,从发电机基本能量关系分别获得各子系统的拉格朗日函数、耗散函数和广义外力,得到发电机的拉格朗日麦克斯韦方程组。通过定义广义动量,将拉格朗日麦克斯韦方程组转化为广义哈密顿系统模型,模型结构清晰、能量流与实际物理系统一致。采用局部简化方法,将系统转化为实用参数描述的模型。提出了电站局部多机系统的概念,导出了以机端可测参数描述的隐式多机系统哈密顿模型。分析表明,该模型具有良好的结构特性。
[Abstract]:Under multi-machine conditions, the variation of voltage and current of generator dnq axis is one of the important parameters reflecting the coupling characteristics between the generator and other units. In this paper, a five-order generator Hamiltonian model is established, which includes the electromagnetic transient of dq-axis. Based on the theory of electromechanical analysis, the Lagrange function, dissipation function and generalized external force of each subsystem are obtained from the basic energy relation of generator. The Lagrange Maxwell equations of generators are obtained. By defining generalized momentum, Lagrange Maxwell equations are transformed into generalized Hamiltonian system models. The energy flow is consistent with the actual physical system. The local simplified method is used to transform the system into a practical model of parameter description. The concept of local multi-machine system in power station is proposed. An implicit multi-machine system Hamiltonian model described by machine-side measurable parameters is derived. The analysis shows that the model has good structural characteristics.
【作者单位】：昆明理工大学;阿伯丁大学工程系;
【基金】：国家自然科学基金项目(51179079,50839003)~~
【分类号】：TM31

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