摘要
在已知各发电机相角及角速度的条件下,构造了一种d -Ek 扩展相平面。基于各机d -Ek 扩展相平面的轨迹信息提出了一种发电机暂态稳定指标,并给出了相应的分析方法。特点是采用曲线拟合的方式,根据上述轨迹的曲线形状,可以快速算得发电机在故障后的暂态稳定指标。经过算例的验证,该稳定指标能够定量地描述发电机承受故障的能力,从而用来衡量故障后系统中各发电机的稳定程度。
Based on angle and angular speed of each generator,an extended d -Ek energy phase plane is proposed in this paper, and on the basis of trajectory information of extended d -Ek energy phase plane of each generator a transient stability index of generator is put forward, then a corresponding analysis method adopting curve fitting is given. According to the curve shape above mentioned trajectory the transient stability index of generator after accident occurred can be quickly calculated. The result of calculation examples of the 10 machine 39 bus IEEE test system shows that this stability index can quantitatively express the ability of bearing accident of generator, therefore, it can be used to measure the stability of each generator in power system after accident occurred.
出处
《电网技术》
EI
CSCD
北大核心
2002年第8期25-28,共4页
Power System Technology
