引入风电波动特性后水电机组快速稳定控制的动力学机理及控制策略

Frequent and fast regulating characteristics of hydroelectric generating set is taken as the point of this study in wind power fluctuation brought in. Centring on the speed and stability of regulating and control for hydroelectric generating set, the correlation mechanism of internal dynamics and its control strategy based on dynamics for stable operation of the unit are studied. The research is carried out from three aspects: One is to study the extraction of wind power fluctuation characteristics. Furthermore, the dynamic mechanism of the internal coordination between the wind power fluctuations additional control and the excitation and the regulating system of the hydroelectric generating unit is studied. The structure and modeling theory of wind power fluctuation additional control system are studied. The second is to put wind power fluctuation additional control signal into the generalized Hamilton theoretical frame of hydroelectric generating set. From two viewpoints of single and multi-machines in hydropower plant , adopting the generalized Hamiltonian structure coupling theory and sensitivity analysis method to research the forming mechanism of internal damping of the hydroelectric generating set. The theory and methods of increasing damping and fast stability are proposed and the fast stable theory and cooperative control strategy in the multi-field coupling and multi-machine condition are obtained for frequent and fast regulation. The third is to build the simulation software platform of multi-machine of hydropower plant, and to develop the simulation research of multi-machine coordination for wind power fluctuations which provides verification simulation methods for theoretical research results. Finally, some experiments are carried out according to the the need of the research.

以引入风电波动下水电机组频繁快速调节特性为切入点，围绕水电机组侧控制调节的速动性和稳定性问题，研究机组运行稳定的内部动力学关联机理及其基于动力学的控制策略。具体从三个方面展开研究：一是研究风电波动特征的提取，进而研究风电波动附加控制输入与水电机组励磁和调速系统内部协同的动力学机制，研究风电波动附加控制系统的结构和建模理论。二是将风电波动附加控制单元纳入水电机组广义哈密顿理论框架下，从单机和水电站多机两个角度，采用广义哈密顿结构耦合分析理论和敏感性分析计算方法，研究机组内部阻尼结构的形成机理，提出增加阻尼和快速稳定的理论和方法，获得水电站多机多场耦合频繁快速调节条件下的快速稳定理论和协同控制策略；三是构建水电站多机系统的运行模拟软件平台，开展风电波动下水电站多机协同的仿真研究，为理论研究成果提供仿真验证手段。最后，根据项目研究情况，开展部分试验研究。

风电作为新能源中的一类重要可再生能源，一直受到学术界和工程领域的高度重视，在这一背景下，本项目研究风电与水电的互补控制，以引入风电波动下水电机组频繁快速调节特性为切入点，围绕水电机组侧控制调节的速动性和稳定性问题，研究机组稳定运行的内部动力学关联机理及其基于动力学的控制策略。.具体从三个方面展开研究：一是研究风电波动特征的提取，进而研究风电波动附加控制输入与水电机组励磁和调速系统内部协同的动力学机制。二是将风电波动附加控制单元纳入水电机组广义哈密顿理论框架下，研究结构和阻尼矩阵的修正，采用Latin超立方采样方法和蒙特卡洛积分法获得结构和阻尼矩阵的参数敏感特性，并获得控制策略。.本项目获得的创新性成果主要有：.（1）水轮发电机组哈密顿附加控制.获得一种风电扰动下在给定平衡点的镇定控制和哈密顿结构修正控制策略的设计方法。提出水电站多机条件下，风电波动附加控制、调速、励磁的多控制器协同设计方法，有效地增加了系统的阻尼，提高了稳定性。.（2）结构和阻尼修正矩阵中参数的敏感性计算.在广义哈密顿结构修正控制下，采用Latin超立方采样方法和蒙特卡洛积分法估算基于方差的全局敏感性分析方法，获得结构和阻尼矩阵参数的敏感因子，和参数敏感性排序。.（3）本研究成果对风电扰动下的分布式电网、微网等的稳定控制提供了基于动力学分析的新方法。