毕业论文《电力系统频率和有功功率的自动控制统》.doc

PAGE 摘 要 自动发电控制是能量管理系统中的一项基本功能，在保证电网频率质量和联络线交换功率恒定等方面发挥着至关重要的作用。随着电网规模的不断扩大和自动化水平的不断提高，具备自动发电控制功能的机组在电网中的比重越来越大，自动发电控制技术己成为现代电网运行中不可缺少的调整手段。 本文针对火电厂负荷优化组合分配的特点，提出了以一个调度周期内发电厂费用总和最小值为目标函数，包含负荷需求限制、单机输出功率上下限、机组最大允许启停次数、机组最小连续运行时间等约束条件的数学模型。通过对优化问题的研究，以优化算法为载体，来实现优化问题。 关键词：自动发电控制，机组组合，负荷分配，优化算法  Abstract Automation generation control (AGC) is an important function in energy management system (EMS). The size of power grids extending and automation level increasing, the proportion of AGC unites in power grids is bigger and bigger. And the automation generation control technology is an indispensable means in modern power grids running. To meet the demand of the characters of optimizing unit commitment (UC), this paper chooses a minimum total cost of scheduling cycle power plant as the objective function, taking constraint function into account, such as the demand constraint, generation capacity limits, ramp rate limits, maximum allowable start and stop times limits, the minimum uptime and downtime limits, unit and stop state limits and etc. Setting optimize algorithm as the carrier to achieve optimization through the research on optimization problems. Key Words: Automatic Generation Control, Unit Commitment, Load Dispatch, Optimization Algorithm  目 录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc295386476 1 绪论 PAGEREF _Toc295386476 \h 1 HYPERLINK \l _Toc295386477 1.1 研究背景 PAGEREF _Toc295386477 \h 1 HYPERLINK \l _Toc295386478 1.2 自动发电控制(AGC)概述 PAGEREF _Toc295386478 \h 1 HYPERLINK \l _Toc295386479 1.2.1 电网安全运行中的自动发电控制 PAGEREF _Toc295386479 \h 2 HYPERLINK \l _Toc295386480 1.2.2 电网经济运行下的自动发电控制 PAGEREF _Toc295386480 \h 3 HYPERLINK \l _Toc295386481 1.3 AGC的研究发展趋势 PAGEREF _Toc295386481 \h 3 HYPERLINK \l _Toc295386482 1.4 本论文的主要工作 PAGEREF _Toc295386482 \h 4 HYPERLINK \l _Toc295386483 2 自动发电控制的原理 PAGEREF _Toc295386483 \h 5 HYPERLINK \l _Toc295386484 2.1 电力系统频率控制原理 PAGEREF _Toc295386484 \h 5 HYPERLINK \l _Toc295386485 2.2 自动发电控制的一般过程 PAGEREF _Toc295386485 \