变电站设计防火标准中部分条文探讨

Discussion on Some Provisions of Fire Protection Standard for Substation Design

《火力发电厂与变电站设计防火标准》是电力设计行业的一项重要标准,2019版防火标准对变电站的适用范围扩大到电压1000kV及以下,取消了单台变压器容量下限的规定。防火标准对其适用电压范围和变压器容量作了调整,相关条文却没有适应性修改;而且该标准对110kV及以下小型或终端变电站针对性不足,导致工程应用中部分条文执行困难。文章就防火标准中未细化或不明确的条文,包括110kV及以下变电站建(构)筑物的火灾危险性分类、户外独立金属箱体建筑物属性、消防给水、部分设施防火间距、不同大小变压器之间防火墙规定等进行了探讨,并提出修改完善建议。

Standard for Design of Fire Protection for Fossil Fuel Power Plants and Substations is an important standard in the power design industry. The application scope of the 2019 edition of fire protection standard for substation is extended to 1 000 kV and below, and the minimum capacity limit of single transformer capacity is cancelled. The fire protection standard has adjusted its applicable voltage range and transformer capacity, but the relevant provisions are not adaptive;moreover, the standard is not targeted enough for small or terminal substations of 110 kV and below, which makes it difficult to implement some provisions in engineering application. This paper discusses the undefined or unclear provisions in the fire protection standard, including the fire risk classification of 110 kV and below substation buildings(structures), the properties of outdoor independent metal box buildings, fire water supply, fire protection distance of part facilities, and fire wall regulations between transformers of different sizes, etc., and puts forward suggestions for modification and improvement.