电缆电容对无功补偿容量的影响浅析

Analysis of Influence of Cable Capacitance on Reactive Power Compensation Capacity

在化工企业的配电设计中,由于感性负载较多,无功功率消耗较大,为了保证配电系统的稳定运行,减少运行损耗,需要进行无功功率补偿。通常,在计算无功功率补偿值时,仅考虑电动机的有功和无功功率,但由于在化工配电系统中大量使用电缆线路作为配电线路,按此方法计算出的补偿数值与实际需要的补偿数值存在一定误差。本文通过计及电缆电容的无功功率补偿计算分析,评估电缆电容对补偿容量精确度的影响,为工程设计提供一定参考。

In the power distribution design of chemical plant,due to the large number of inductive loads and the high consumption of reactive power,reactive power compensation is necessary to ensure the stable operation of the power distribution system and reduce operational losses.Usually,when calculating the reactive power compensation value,only the active and reactive power of the motor are considered.However,due to the extensive use of cable lines as power distribution lines in power distribution systems of chemical industry,there is a certain error between the compensation value calculated by using this method and the actual compensation value required.This paper evaluates the influence of cable capacitance on compensation capacity accuracy by calculating and analyzing the reactive power compensation of cable capacitance,which can provides a certain reference for engineering design.