火电机组交互影响对次同步振荡的作用机理研究OACSTPCD
Study on the mechanism of interaction between thermal power units on subsyn-chrouns oscillation
有研究表明,多机系统发生SSO(次同步振荡)时,机组间具有相近扭振频率.为此,分析了相近频率机组轴系间的交互影响,及系统串补度、机组间电气距离和相近扭振频率对次同步振荡的作用机理.首先,基于特征矩阵,推导两台火电机组并列送出系统的复转矩系数表达式.然后,将单机的简化复转矩系数法扩展到多机系统,推导了双火电机组电气阻尼的简化表达式,分析了其他机组对待研机组阻尼的作用,结果表明,串补度、机组电气距离以及相近扭振频率都会影响到系统阻尼和稳定性.最后,通…查看全部>>
Research findings indicate that in multi-unit systems experiencing subsynchronous oscillations(SSO),the units tend to exhibit similar torsional vibration frequencies.Therefore,an analysis was conducted on the interac-tive effects among shaft systems of units with similar frequencies,as well as the mechanisms of system series com-pensation,electrical distances between units.Additionally,the paper delved into the mechanisms through which system series compensa…查看全部>>
臧德春;赵荣臻;杨超;祝新驰
南京南瑞继保电气有限公司,南京 211102南京南瑞继保电气有限公司,南京 211102南京南瑞继保电气有限公司,南京 211102南京南瑞继保电气有限公司,南京 211102
次同步振荡相近扭振频率简化复转矩系数交互影响电气阻尼
SSOsimilar torsional vibration frequencysimplified complex torque coefficientinteractive effectselectrical damping
《浙江电力》 2024 (2)
25-33,9
中国电力科学研究院有限公司科技项目(2021YFB2400805)
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