回热再热汽轮机热力系统参数综合优化研究

A Study of Comprehensive Optimization for Regenerative Reheat Units Power System Parameters

本文提出一种回热再热汽轮机热力系统参数综合优化方法。在热平衡计算法的基础上,应用一种较为完善的汽轮机热力过程线方程,建立回热再热汽轮机热力系统参数综合优化数学模型,并采用一种新的直接优化方法—正多面体法进行求解,具有收敛速度快,程序简单的特点。用此法以200MW汽轮机为例,计算的结果表明,综合优化可以同时求得包括给水温度和再热压力在内的最佳回热参数。因而综合优化方法明显优于常规的回热焓升最佳分配方法。

In this paper a new method of power system optimization is introduced for regenerative reheat turbine units. A mathematical model for power system optimization was formed and successful to determine the turbine relative internal efficiency based on volume flow rate etc of a power system.The Regular Polyhedren Optimization Method was used to optimize a 200MW unit power system to determine parameters which could gain higher efficiency.