基于详细水机电模型的水电系统动态过程仿真  

Transient Simulation of Hydroelectric System Based on Hydro-Mechanical-Electro Detailed Model

作　　者：高慧敏[1] 刘宪林[1] 

机构地区：[1]郑州大学电气工程学院,郑州450002

出　　处：《系统仿真学报》2003年第4期469-471,485,共4页Journal of System Simulation

摘　　要：水力系统与电力系统模型精度失配、缺乏合理全面的水机电数学模型是制约水电系统动态过程仿真质量提高和应用范围扩展的主要原因。本文建立了适用于水机电联合仿真的详细水机电整体模型,该模型包括基于管道结构特征自动建立的复杂水系统弹性水击模型,差动式、阻抗式和圆筒式调压井通用模型,水轮机非线性解析模型,调速器模型,计及阻尼绕组作用的同步发电机与电网模型,励磁系统模型等,提出了联合求解弹性水击波过程和并网机组机电动态过程的数值算法。对具有复杂水系统的单机无穷大系统短路扰动过程进行仿真,结果合理可信,证实了水机电数学模型和数值方法的有效性。That the model presicion of hydraulic system and power system is mismatch reasonably and that there is lack of hydro-mechanical-electro model are the main reason which restricts improving and application extending of simulation on hydroelectric system. It is given in this paper the hydro-mechanical-electro detailed models for united simulation of hydraulic system and power system, including auto-modeling model of complex conduit system based on conduit characteristics, general model of cylindrical or throttled or differetial surgetank, nonlinear model of hydroturbine, generator model with damp winding and grid model. The numerical algorithm for resolving electro-mechanical transient of elastic hammer progress and units to grid together is deduced. Simulations of short-circuit transient for single-machine-infinite system with complex conduit system are made and reasonable results confirm the validity of the hydro-mechanical-electro model and the numerical algorithm.

关 键 词：水电系统 动态过程 仿真 数学模型 水机电模型 水轮发电机组 电力系统 

分 类 号：TM312[电气工程—电机] TM743