摘要
通过对发电机详细模型和简化模型的比较,推导出单机无穷大系统下发电机简化模型阻尼转矩系数的数学表达式。通过Prony方法分析扰动后每台发电机的有功功率、功角和角速度的变化对应的振荡模式,计算出每个模式对应的阻尼转矩,通过每个振荡模式对实用模型阻尼转矩系数的灵敏度大小,确定发电机简化模型中阻尼转矩系数的取值。通过单机无穷大系统和IEEE 39节点系统算例验证了所提方法的合理性。
By the comparison between simplified and detailed generator models,the mathematical expression of damping torque coefficient is deduced for the simplified model of generator in single-machine infinite system.Prony method is adopted to analyze the oscillation mode of generator according to its changes in active power,power angle and angular speed after disturbance,and the corresponding damping torque is calculated.The damping torque coefficient of simplified generator model is determined according to the sensitivity of oscillation mode to the damping torque coefficient of practical model.The rationality of the proposed method is verified by the case study for single-machine infinite bus system and IEEE 39-bus system.
出处
《电力自动化设备》
EI
CSCD
北大核心
2013年第11期15-21,共7页
Electric Power Automation Equipment
基金
国家自然科学基金重点项目(51137002)
江苏省自然科学基金重点研究专项(BK2011026)
中央高校基本科研业务费专项资金资助项目(2011B08914)~~
关键词
同步发电机
模型
阻尼系数
PRONY分析
灵敏度分析
synchronous generators
models
damping coefficient
Prony analysis
sensitivity analysis
