电厂侧AVC系统关键影响因素研究与辅助控制策略  

Research on Key Influence Factor and Auxiliary Control Strategy of AVC System in Power Plant

作　　者：李晓晶[1] 刘松楠[2] 陈振寰[1] 马艳峰[1] 崔剑[1] 高翔[1] 苏航[3] 孙辉[2] 

机构地区：[1]国网甘肃省电力公司,甘肃省兰州市730030 [2]大连理工大学电气工程学院,辽宁省大连市116024 [3]大连民族学院机电工程学院,辽宁省大连市116600

出　　处：《智能电网》2016年第4期426-431,共6页Smart Grid

摘　　要：发电厂侧的自动电压控制(automatic voltage control,AVC)是自动电压控制系统的重要组成部分。针对电厂侧AVC系统,重点探讨负荷高峰和负荷低谷的情况下,分析发电厂电气距离与负荷变化对发电厂机端母线电压、厂用母线电压以及发电厂无功出力的不同影响。并在此基础上,对远离负荷中心的电厂在负荷低谷时对电厂侧AVC系统最为不利的情况,提出两种电厂侧AVC运行条件下的辅助运行方案,以提高发电厂厂用母线电压,进而提高电厂侧AVC系统的调节能力。AVC in power plant is an important part of AVC system. Firstly, the paper focuses on the analysis of the impact of electrical distance and load change of the power plant upon the AVC system in power plant. Then, in the conditions of valley load and peak load, we analyze the different impacts of electrical distance and load change of the power plant upon the generator terminal bus voltage, auxiliary bus voltage and the reactive power output of power plant. Finally, to the worst situation for the AVC system in power station, namely, a power station being far away from the load center is in valley load, this paper puts forward two auxiliary operation schemes to increase the auxiliary bus voltage of the power plant and further increase the regulation capacity of the AVC system in power plant.

关 键 词：自动电压控制 发电厂 电气距离 负荷 发电厂无功出力 

分 类 号：TM62[电气工程—电力系统及自动化]