基于电压凹陷敏感度不确定性和能量损失的敏感负荷电压凹陷经济损失评估

高科技产业等敏感负荷对电压凹陷特别敏感,单个设备故障可能导致整个生产线停运,由此造成极大的经济损失。敏感负荷对电压凹陷的耐受能力存在一定的不确定性。在现有电压凹陷敏感度概率评估方法的基础上,建立敏感负荷电压凹陷敏感度随机估计模型;基于能量损失理论,定量地评估敏感负荷电压凹陷经济损失。算例分析给出了由计算机控制的高科技产业由于电压凹陷造成的经济损失。

Economic Losses Assessment Caused by Sensitive Equipment Due to Voltage Sag Based on Sensitivity Uncertainty Due to Voltage Sag and Energy Loss

Sensitive load is very sensitive to voltage sag.The failure of single equipment can cause the outage of the entire production line,thus causing great economic losses.The voltage tolerant curve of sensitive load has the uncertainty.The stochastic estimation model for the equipment which is sensitive to voltage sag is established based on probability assessment method for the voltage sag sensitivity.Based on the energy-loss theory,the financial losses due to voltage sag are evaluated quantificationally.Simulation results show the economic losses caused by voltage sag in high-tech industry controlled by computers.