摘要
负荷建模是电力系统基础性研究课题之一,模型的准确度对电网潮流、稳定计算、保护动作等均有较大影响。对比常用的静态负荷模型中的分段低次差值函数模型,提出了基于三次样条插值函数的负荷模型,通过获取变电站实测的有功、无功、电压数据建立三次样条插值函数模型,从而获得精确的负荷模型表达式。结果表明,该模型具有良好的分段性以及很好的曲线光滑性,所建立的模型精度也是分段低次差值函数模型所不具备的。
Load modeling is one of the fundamental research topics about power system, and the model accuracy has a great impact on network power flow, stability, and protection action. By comparing with piecewise linear interpolation function model, a new model based on the cubic spline interpolation function is proposed by collecting active, reactive power and voltage data at substations. The results show that the model is excellent in segment and curve smoothness, and its accuracy is better than that of other models.
出处
《山西电力》
2013年第5期24-27,共4页
Shanxi Electric Power
