广东电力2016，Vol.29Issue(3)：33-37,5.DOI:10.3969/j.issn.1007-290X.2016.03.007
原动机调速系统参数对低频振荡的影响
Influence on Low Frequency Oscillation by Parameters of Speed Governing System of Prime Mover
摘要
Abstract
MATLAB software is used to set up a generating unit and grid coupling model for interaction of speed governing system of prime mover and power system,and this paper analyzes whether generating unit grid coupling will cause low fre-quency oscillation of the power system. Simulation analysis indicates that if derivative gain of the speed governing system of hydraulic turbine is high and partial derivative of output power of the hydraulic turbine on the waterhead changes with load, low frequency oscillation of power may occur due to disturbance. With regard to speed governing system of the steam tur-bine,when damping of the system is not strong,parameters of the controller of steam turbine may have great influence on the small signal system. When using proportion integral differential (PID)controller,oscillation will decay under small dis-turbance,while using PI controller,low frequency oscillation with increasing amplitude may occur under small disturbance of the system.关键词
电力系统/低频振荡/水轮机/汽轮机/调速系统/阻尼/速度变动率Key words
power system/low frequency oscillation/hydraulic turbine/steam turbine/speed governing system/damping/speed-droop ratio分类
信息技术与安全科学引用本文复制引用
蔡笋,邓小文,冯永新,徐衍会,马骢..原动机调速系统参数对低频振荡的影响[J].广东电力,2016,29(3):33-37,5.基金项目
中国南方电网有限责任公司科技项目(K-GD2013-0491) （K-GD2013-0491）
