复杂水力耦合下水轮发电机组哈密顿稳定控制策略研究

项目名称： 复杂水力耦合下水轮发电机组哈密顿稳定控制策略研究

项目编号： No.51469011

项目类型： 地区科学基金项目

立项/批准年度： 2015

项目学科： 水利工程

项目作者： 钱晶

作者单位： 昆明理工大学

项目金额： 41万元

中文摘要： 为了深入探索复杂水力耦合条件下，水轮发电机组控制器（AVR和PSS）与水力机组对象系统之间的动力学关联机制，将控制器（AVR和PSS）与水力机组对象系统，统一在广义哈密顿理论框架下，研究各子系统及子系统之间物理连接和动力学耦合特征，建立包含水力机组对象系统和控制器的整体动力学模型，提出以动力学耦合特性为核心的多系统耦合下系统模型综合的原则和方法。应用广义哈密顿系统结构关联分析理论和相关性分析方法，结合多机系统仿真分析方法，研究水力扰动与控制器参数之间的动力学关联机制，揭示复杂水力耦合系统扰动诱发发电机有功波动以及大电网低频振荡与水力振荡的耦合机理，提出相应的分析理论和计算方法。采用广义哈密顿结构和阻尼修正设计理论及多机仿真分析，提出复杂水力耦合条件下水轮发电机组控制器参数设计的理论和方法。通过AVR和PSS的优化参数设计，抑制水力系统扰动诱发的有功振荡，同时改善电网低频振的影响。

中文关键词： 水力耦合；广义哈密顿；水轮发电机组；控制器；控制设计

英文摘要： In order to deeply explore the dynamics associated mechanism between the hydraulic unit object system and hydroelectric generating set controller (AVR and PSS) under the complex hydraulic coupling conditions, controller (AVR and PSS) and hydraulic unit object system is unified in the generalized Hamiltonian framework, Each subsystem, Physical connections and dynamics coupling characteristics between subsystems are researched, The overall system model included hydraulic unit object system and controller is established. Under the condition of multisystem coupled, The principle and method to integrate system modes is put forward by dynamics coupling characteristics as the core of the system. Applying the general Hamiltonian system structure relevance theory and the correlation analysis method, combining with multimachine simulation analysis method, to research dynamic correlation mechanism between the hydraulic disturbance and the controller parameters, reveal the coupling mechanism that active power fluctuations induced by the disturbance of complex hydraulic coupling system and the coupling mechanism between the power network low frequency oscillation and hydraulics oscillation, Put forward the corresponding analysis theory and calculation method. By use of the generalized Hamiltonian structure and damping revised design theory and multimachine simulation analysis method, the theory and method of controller parameters designed are proposed. Through the AVR and PSS parameters optimization designed to restrain the active power oscillation caused by the hydraulic system disturbance, meanwhile to improve power network stability for low frequency oscillation.

英文关键词： coupling;generalized Hamilton;hydroelectric generating set;controler;control design