CAJ | 학술논문

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。
재다궤조건하，발전궤d、q축전압전류적변화정시반영본궤여기타궤조지간우합특성적중요삼수지일。해문건립료포함d、q축전자잠태적오계발전궤합밀돈모형，위경호지게시다궤우합작용적내부동역학궤제전정기출。의거궤전분석동역학이론，종발전궤기본능량관계분별획득각자계통적랍격랑일함수、모산함수화엄의외력，득도발전궤적랍격랑일맥극사위방정조。통과정의엄의동량，장랍격랑일맥극사위방정조전화위엄의합밀돈계통모형，모형결구청석、능량류여실제물리계통일치。채용국부간화방법，장계통전화위실용삼수묘술적모형。제출료전참국부다궤계통적개념，도출료이궤단가측삼수묘술적은식다궤계통합밀돈모형。분석표명，해모형구유량호적결구특성。
Under local multi-machine condition, voltage and current changes of generatord andq axis are important parameters that mirror the coupling characteristics between local generator and others. Fifth order generator Hamiltonian model included electromagnetic transient of thedandq axis is established in this paper, which provides a foundation that reveals inner dynamics mechanism of multi-machine coupling and interaction. Based on electromechanical analysis dynamics theory, each of subsystem Lagrange function, dissipative function and generalized forces can be derived from fundamental energy relationship of the generator, then the Lagrange-Maxwell equations of the generator can be derived. The equations are transformed into the generalized Hamiltonian model by defining the generalized momentum, in which its structure is clear, its energy flow is consistent with actual physical system ones. The Hamiltonian model of generator is improved by the transition to that with practical parameters resulting from local simplified method. The conception of the local multi-machine system of power station is proposed, implicit multi-machine system Hamiltonian model described by measurable parameters on the generator port is derived. Analysis show that proposed model is well in structure.