IEC TS 62257-9-2:20 16（E）规定了在分散式农村电气化背景下，由于技术和经济原因，由架空线路制成的微电网。IEC 62257本部分涵盖的微电网为低压交流、三相或单相，额定容量小于或等于100 kVA。它们由一个微型发电厂供电。相对于上一版的主要技术变化如下:将技术规范涵盖的电压范围改为交流额定电压1 000 V以下，直流额定电压1 500 V以下。 本出版物应与IEC 62257系列一起阅读。

IEC TS 62257-9-2:2016(E) specifies microgrids made of overhead lines because of technical and economical reasons in the context of decentralized rural electrification. The microgrids covered by this part of IEC 62257 are low voltage AC, three-phase or single-phase, with rated capacity less than or equal to 100 kVA. They are powered by a single micropower plant. The main technical changes with regard to the previous edition are as follows: changing the voltage range covered by the technical specification to AC nominal voltage below 1 000 V and DC nominal voltage below 1 500 V.

This publication is to be read in conjunction with IEC 62257 series.