摘要
在建立适用于暂态稳定分析的动态等值模型基础上,利用曲线积分法得到事故后系统的暂态能量函数、临界能量.通过分析计算得到暂态能量裕度;改变传输断面交换容量,设置有效扰动并进行能量函数分析计算得到暂态能量裕度随渐变交换容量变化曲线,依据暂态能量裕度临界指标,进行交换容量极限评估。实际算例分析证明所提方法有效、实用,且具有较高的精度。
The paper establishes dynamic equivalence model which is suitable for transient stability analysis.Based on which,the paper obtains transient energy function and critical energy of system after accident by using curvilinear integral method,and calculates the margin of the transient energy function.The exchange capacity of transmission section is changed and the effective disturbance is set to carry out the energy function analysis.In that case,the curve of the transient energy margin changing with gradient exchange capacity is calculated.The exchange capacity limit is evaluated based on transient energy margin index.The calculation results of an example show that the proposed method is of high accuracy and effective and practical.
出处
《陕西电力》
2014年第1期7-10,26,共5页
Shanxi Electric Power
基金
国家自然科学基金项目(51207114)
关键词
一次风机
单台一次风机运行
风压分段运行
energy function
transient stability
margin of transient energy function
exchange capacity limit
