两台同容量三圈变压器经济运行参数计算

摘要

引用三圈变压器等效负载损耗的概念,推导出了两台同容量三圈变压器并列运行的经济负荷功率、经济负荷率、经济运行效率和两台同容量三圈变压器并列经济运行投切台数临界功率的计算公式。以某降压变电所的两台同容量SFSL1- 31500/110型三相三绕组电力变压器为实际算例说明了上述公式的实际用法。%Appointing the concept of equivalent load loss of the three-winding transformer,derived out the calculation formulas of two same capacity three-winding transformer economical operation load rate,economic operation efficiency and the threshold power of sets number put into and get off of the parallel operation three-winding transformer with the same capacity..It explains the practice usage of the formula above-mentioned with two type SFSL1-31500/110 three-winding transformer of 110kV step down substation as a practice calculation example.