摘要
提出了一种静态负荷模型参数的动态修正方法,根据负荷电压变化实时修正负荷模型参数。基于忽略频率特性的传统静态负荷模型,在系统电压额定值附近对电压求偏导数,根据系统电压连续变化调节电压特征系数,经泰勒系数展开并略去二次及高次项,化简得到修正后的有功和无功电压特征系数。应用动态修正法进行仿真,并与恒定参数进行扰动响应比较,结果表明,使用动态修正法所得静态负荷模型能更好地反映负荷和电压的实际特性。
A dynamic modification method is presented,which adjusts real-timely the exponents of static load model in terms of load voltage variation. It is based on the conventional static load model with the frequency characteristic neglected and the partial derivative of voltage near rating, value is calculated. The exponents are adjusted according to the continuous voltage change. By Taylor series expansion with the quadratic and higher-degree terms neglected ,the modified exponents are achieved and applied to modify the eigenvalues of active and inactive power voltages. The simulative results show that,the load model with dynamically modified exponent reflects the actual load and voltage characteristics better than that with constant exponent in disturbance response.
出处
《电力自动化设备》
EI
CSCD
北大核心
2005年第10期52-54,共3页
Electric Power Automation Equipment
关键词
静态负荷模型
动态修正法
负荷特性
static load model
dynamic modification method
load characteristic
