Study on the Countermeasures for SSO Problem in HulunBuir Power Plant and Its Implementation Effect
It’s discussed at first in the paper that the mechanism of SSO problem in HulunBuir power plant.On a basis of the mechanism,the units’ speed deviation curves are simulated which are similar to the waveforms that TSR recorded,to ensure the reliability of the subsequent feasibility study of suppression measures.Then according to the relationship between the magnitude of modal torque and modal speed,through the analysis of the speed deviation curves that recorded during steady-state operation,modal torsional power in shaft weakest section is computed to quantify the magnitude of the torsional oscillation the shaft bearing.Besides,it’s also provided in the paper that numerous analysis results of modal torsional torque of other 600MW units during their steady-state operation in different power plants.By comparing with these units,the paper illustrate the risk assessment of the frequent low-magnitude SSO,as well as the necessity and the feasibility to take appropriate suppression measures.At last,taking into account factors such as investment,area occupied and inhibitory effect,among numerous measures,SVG is selected to inhibit SSO problem in the feasibility study.The simulation results show that SVG can effectively increase the damping of SSO and reduce the magnitude of torsional torque during steady-state operation.The actual project confirms the correctness of the simulation results.After SVG putting into operation,the phenomenon of TSR alarm completely disappeared.It provides an effective way and benchmark to analyze and solve similar SSO problem in the future.
Sub-synchronous oscillation (SSO) fatigue life accumulate torsional stress relays (TSR) torsional power suppression measures static synchronous compensator (SVG)
KANG Haiyan WANG Shaode XUE Chengyong REN Shudong XU Ke ZHU Yun
North China Power Engineering CO., LTD Inner Mongolia Guohua Hulun Buir Power Generation Co., Ltd China
国际会议
国际大电网会议组织保护与自动化专业委员会年度会议暨学术研讨会
南京
英文
1-6
2015-09-20（万方平台首次上网日期，不代表论文的发表时间）