基于负荷-电压灵敏度的配电网低电压预警研究

Research on Low Voltage Early Warning of Distribution Network Based on Load-Voltage Sensitivity

基于现有负荷预测,提出负荷-电压灵敏度用以表征负荷变化与电压间的关系。根据现有电压监测,结合负荷增长引起的电压降落,构建基于负荷-电压灵敏度的配电网低电压预警方法。算例表明,模型可很好地实现低压预测功能,便于对低电压问题及早采取相应措施。

Based on the existing load prediction,load-voltage sensitivity was proposed to characterize the relationship between load change and voltage.Based on the existing voltage monitoring,combined with the voltage drop caused by load growth,a low-voltage early warning method for distribution networks based on load-voltage sensitivity was built.Numerical examples showed that the model could well implement the low-voltage prediction function,and it was convenient to take corresponding measures early on low-voltage problems.