杭州卷烟厂电气负荷的实测与分析

Actual Measurement and Analysis of Electrical Loads for Hangzhou Cigarette Factory

通过对杭州卷烟厂两台35/10 k V主变、6台10 k V制冷机和11台10/0.4 k V变压器负荷的实测,分析变压器和制冷机负荷率低的原因。指出要想使今后的设计容量接近实际,首先应修正并细化YC/T 9-2006《卷烟厂设计规范》的第9.2.2条,使制丝车间、卷包车间和掺兑车间需要系数Kx更接近实际。对车间冷负荷计算中涉及工艺设备散热量的计算,可参考文章《电动设备冷负荷计算新方法》,使得以电动设备冷负荷为主的空调车间,设计冷量、风量和水量(冷却水量和冷媒水量)比较接近实际。从而大幅度减小变压器的设计容量。

The paper analyzes the reasons for low load rate of transformers and refrigerators based on the actual measurement of loads of two 35 / 10 k V main transformers, six 10 k V refrigerators and eleven10 / 0. 4 k V transformers in Hangzhou Cigarette Factory.The analysis shows that, to make the design capacity in future close to the actual capacity, article 9. 2. 2of Design Specification of Cigarette Factory（YC / T 9- 2006） shall be firstly revised and specified, to make the Kxdemand coefficient for cut tobacco,wrapping and blending, mixing workshops more closer to the actual value. During the calculation of cooling load of the workshop, the related heat dissipation of processing equipment can be calculated according to New Method for Calculating Cooling Load of Electrical Equipment[ 2], so that the design values of cooling capacity, air quantity and water volume（ cooling water consumption and refrigerant water） in the air conditioning workshop mainly based on the cooling load of electric equipment can be close to the actual value, thereby significantly reducing the design capacity of transformers.