Research on Dynamic Threshold of Current Carrying Capacity Considering Efficiency and Reliability of Cable Lines
In response to the issue of low cable utilization in the current distribution network,fixed threshold methods with lower current carrying capacity are often used for the sake of operational reliability.This paper proposes a method for dynamic threshold of current carrying capacity.This method theoretically studies the relationship between cable current carrying capacity and conductor temperature,quantifies the functional relationship between cable current carrying capacity and conductor temperature through measured data from actual cable engineering operations,and determines the benchmark threshold of the cable line,thereby achieving dynamic calculation of the threshold of the line.The algorithm is applied to the dynamic threshold monitoring function module of the intelligent cable measurement and control system,and the effectiveness of this method is verified by the actual operating data obtained from the line.