变压器经济运行及其控制

THE APPROACHES FOR ECONOMICAL REVOLUTION AND AUTOMATIC-CONTROL OF TRANSFORMERS

本文应用变压器经济运行理论和推导公式,对容量和短路电压降有差异的多台并列的变压器综合临界客量进行计算和经济性比较,择其最佳方案进行自动切换控制。将相同并列时的平均负载电流,变换成直流电压(即比较量),再与标准量(即综合临界容量对应电压)比较,逻辑运算,推动继电器延时后,控制变压器高、低压开关合闸(或分闸),实现变压器的并列(或分列)。

Based on the economical operating theory of transformers and some eonc-lusion formulae,this paper makes a economical comparison fo synthetic crit-ical capacity for parallel transformers which have different capacity and short circuit voltage. The optimum program is used for automatic-transfer -Control. Transfer average value of load electric current of same parallel transfo mers to direct current volt age ( compare measure) . Then compared with standard value. (corresponding synthetic critical capacity). Through logic calculation, relay delay, controlling high and low voltage switch on or off realize paraller or splito.