水-火电机组频率控制策略研究  

Research on the Frequency Control Strategy of Hydro-Thermal Power Generating Units

作　　者：唐耀华 郭为民 崔杨[2] TANG Yaohua;GUO Weimin;CUI Yang(Rundian Energy Science and Technology Co.,Ltd.,Zhengzhou 450052,China;Department of Electrical Engineering,Northeast Electric Power University,Jilin 132012,China)

机构地区：[1]润电能源科学技术有限公司,河南郑州450052 [2]东北电力大学电力工程学院,吉林吉林132012

出　　处：《中国电力》2020年第6期153-160,178,共9页Electric Power

基　　金：国家自然科学基金资助项目(基于能量时移调控的新能源电力系统高渗透率风光发电消纳调度机理研究,51777027)。

摘　　要：哈密-郑州特高压直流输电送端电网存在大量的水电机组,掌握水电与火电一次调频特性及其差异对大功率输电安全稳定性具有重要意义。以哈密-郑州特高压直流输电送端电网为研究对象,仿真分析了在较高水电负荷比例条件下不同控制参数对调频控制的影响,结果表明,提高水、火电机组的稳定性和持续性都能显著提高综合调频能力和混合电网的频率稳定性,但水电机组容量的增加会提高电网频率的动态超调。此外,水、火电机组调频指令与负荷的线性度水平都有待进一步规范。Since being a large number of hydro power units in the Hami-Zhengzhou UHVDC transmission network,it is of great significance for the safety and stability of high-power transmission to master the primary frequency characteristics and differences of hydro power and thermal power.In this paper,the Hami-Zhengzhou UHVDC transmission power grid is taken as a typical research object.The influence of different control parameters on the primary frequency control under the condition of higher hydropower load ratio is simulated and analyzed.The joint adjustment scheme between thermal power unit and hydropower unit is given.The control strategy and feasibility suggestions are put forward.

关 键 词：特高压直流输电工程 水火电机组 动态仿真 频率控制 频率稳定 

分 类 号：TM712[电气工程—电力系统及自动化]