220kV变电站中建设融冰配电变压器的设想

2008年1月的冰灾中融冰实例证明，传统串接多线路的融冰方法存在对系统影响大、操作复杂等缺点。用合适的电压等级对单一线路进行融冰优点明显。针对地区电网110kV线路的长度等特点，提出了在220kV变电站中建设融冰配电变压器的设想，并经计算证明该配电变压器能够实现对绝大多数的110kV线路的单一线路融冰。

Assumption of Building Ice-Melting Distribution Transformer in 220kV Substation

The ice - melting experiences in ice and snow disaster in January 2008 prove that the traditional ice - melting method of series muhiline has some drawbacks, such as having a great influence on the system and complex operation. It has many obvious advantages to adopt the suitable voltage grade in ice - melting method of single power line. According to the features of local 110 kV transmission line such as length, the assumption of building ice - melting distribution transformer in 220 kV substation is put forward, which has been proved by calculations.