摘要
水电能源系统是一个典型的开放系统,与外界环境存在着频繁的物质和能量交换。根据热力学熵的基本概念及熵概念泛化的基本特性,提出了水电能源系统熵的定义,并进行了系统电站熵变分析;结合水电能源系统电站的特点,提出了径流调节过程中基于决策出流量的水头、水量潜在熵增计算表达式;建立了系统电站发电量优化规划即熵增最小目标方程,应用凸规划原理及凸函数性质论证了目标方程存在最优解;最后提出了水电能源系统优化规划模型,实例验证该模型符合实际规划需求。
Hydropower energy system is a typical open system. There are frequent matter and energy exchange with the environment. Based on the general concept of the thermodynamic entropy and basic extension characteristics of entropy, this paper gives the definition of entropy and the entropy transition analysis in hydropower energy system. Considering the characteristics of hydropower station in runoff regulation process, the paper proposes computational methods of the potential entropy production for water head and water capacity respectively. The minimum entropy production object equation is established to realize the optimal planning of hydropower energy system power generation. Optimal solution of the object equation can be achieved demonstratively according to the convex programming principle and convex function property. Optimal programming model of hydropower energy system is established finally in the paper. The practical illustration shows that the model can satisfy the requirements of programming.
出处
《电力系统自动化》
EI
CSCD
北大核心
2004年第24期14-18,共5页
Automation of Electric Power Systems
基金
国家自然科学基金重大项目资助(50099624)。
关键词
熵
熵增
水电能源系统
优化规划
电力系统
<Keyword>entropy
entropy production
hydropower energy system
optimum planning
power systems
