电网技术2011，Vol.35Issue(7)：101-105,5.
一种综合频率扫描和复转矩系数的次同步谐振风险定量评估方法
A Method Integrating Frequency Scanning and Complex Torque Coefficient to Quantitatively Evaluate Subsynchronous Resonance Risk
摘要
Abstract
In allusion to subsynchronous resonance (SSR)risk of power transmission system with series compensator, a quantitative evaluation method in which the frequency scanning and complex torque coefficient are integrated is proposed. Firstly, in the proposed method the impedance-frequency scanning is utilized to obtain the simplified equivalent model of power transmission system with series compensator and its parameters; then based on complex torque coefficient the explicit expressions of damping under various torsional vibration modes, in which the mechanical damping and electrical damping of shafting are taken into account, are derived. Case study results show that the results from the proposed method conform to those by eigenroot analysis, however the proposed method is succinct and intuitional and its calculation burden is less, besides, the expressions of the proposed method are the explicit function of parameters of generators and power network, so the proposed method can offer direct, accurate and quantitative damping results for multi-mode SSR. The proposed method can be applied to power grid with multi-series compensators and multi-voltage grades to perform SSR risk evaluation.关键词
次同步谐振/频率扫描/复转矩系数Key words
subsynchronous resonance (SSR)/ frequency scanning/ complex torque coefficient分类
信息技术与安全科学引用本文复制引用
王忠军,王林川,谢小荣,杨煜,王燕廷..一种综合频率扫描和复转矩系数的次同步谐振风险定量评估方法[J].电网技术,2011,35(7):101-105,5.基金项目
国家自然科学基金项目(51077080) （51077080）
国家电网公司科技项目(20092000857). （20092000857）
