汽轮发电机组一次调频性能的分析  

Analysis and Research on Primary Frequency Modulation of the Turbine Generation Unit

作　　者：竺炜[1,2] 谭喜意[2] 唐颖杰[2] 周有庆[1] 

机构地区：[1]湖南大学电气与信息工程学院,湖南省长沙市410082 [2]长沙理工大学电气与信息工程学院,湖南省长沙市410076

出　　处：《电力系统自动化》2008年第24期52-55,79,共5页Automation of Electric Power Systems

基　　金：湖南省教育厅资助科研项目(04C092)~~

摘　　要：数字电液调速系统投运后,一次调频效果不理想,主要问题是出现振荡和一次调频能力不足。通过对功频调速控制机理分析,发现在电网侧发生突变扰动时,功率输出控制环节的动态调节过程表现为前馈开环控制特点;而静态调节或以给定值主导调节时,则为闭环反馈控制特点。前馈开环控制特性使一次调频初期出现"反调",并引发过程振荡;闭环控制特性则使一次调频静态调节能力下降。仿真结果证明了定性和定量分析结果的正确性。分析结果为改进功频调速控制方法提供了重要的借鉴和依据。After implementation of a digital electro-hydraulic （DEH） control system, the effect of primary frequency regulation （PFR） is not ideal. The main problems are existence of oscillations and insufficient PFR capability. Thorough detailed studies of power frequency regulation control mechanism, it is discovered that the dynamic PFR process at the power output control module demonstrates feed-forward open loop characteristics when subjected to abrupt disturbances. On the other hand, when the system is at steady state or leading regulate state by pre-set value, it illustrates closed loop feedback characteristics. Feedforward open-loop appear ＂reverse regulation＂ in the beginning of the PFR. The simulation results prove the correctness of qualitative analysis and quantitative analysis. The analytical outcome provides important reference and basis for improving power-frequency regulation method.

关 键 词：功频调节 一次调频 前馈开环 反调 增益 

分 类 号：TM311[电气工程—电机]