高海拔地区污水处理厂电气设备的选型

Selection of Electrical Equipment for Wastewater Treatment Plant in High Altitude Area

高原地区海拔高,其环境特点是空气密度低、常年气温低、紫外线辐射较强,这种环境条件对常规电气设备的运行会产生一定的影响。以日喀则地区拉孜县县城污水处理厂为例,重点介绍了高低压成套开关柜、电气元器件、变压器、柴油发电机等常用电气设备的绝缘、温升受高海拔影响,其在选型上与正常环境中的不同之处,并通过选用特殊环境产品、采用降容使用等措施,保证运行的安全可靠。

Due to the high altitude, the environment of plateau area is characterized by low- air density, low temperature all the year round, strong ultraviolet （UV） radiation. The environmental condi- tions will affect the normal operation of the electrical equipment. Taking the municipal wastewater treat- ment plant in Lhaze County in Xigaze area as an example, the insulation and temperature rise of common electrical equipment, such as sets of high and low voltage switchgear, electrical components, the insula- tion of the transformer, diesel generators were mainly introduced. Its selection is difference in that in nor- real environment, and the safety and reliability of operation can be ensured by choosing a special environ- mental products and adopting measures such as reduced capacity.