新型半导体冷凝除湿器在10kV环网柜中的应用研究

The Application Research of IPM-TH21-S1 in 10kV Ring Network Cabinet

随着用户用电量的不断扩大,电网系统也在不断发展,10kV配电网也越来越多。在城市配电网中,主要采用10kV环网柜进线电能传输。环网柜分布于城市的各个角落,包括地下配电房、路边配电箱等。大多数是阴暗潮湿的环境,极容易引起凝露积水。环网柜的电缆大部分都是暴露在空气中,空气干燥时电气距离满足设计要求,但是当空气严重潮湿或者凝露积水时,极易造成接头和柜体之间的绝缘下降,甚至可能会发生空气击穿放电或者是短路等事故发生。新型半导体冷凝除湿器采用半导体制冷技术,在柜的除湿器内进行局部冷却,造成局部凝露,析出水分并排出柜外,从根本上降低湿度,破坏凝露条件,达到有效防凝露产生的目的。该除湿器除了可以应用在10kV环网柜上,还可以应用于变电站端子箱、回流箱、通讯箱等容易受潮的户外箱内~[1]。

With the continuous expansion of electricity consumption, and grid system is developing, the number of 10 kV distribution network has also become more and more. Mainly using 10 kV ring counter into the line power transmission, ring counter is also located in every corner of the city. This includes underground power distribution room, roadside distribution box, etc. These places are dark and damp, extremely easy to cause condensation of water. Most of the cable in the loop network is exposed to air, the electrical distance meet the requirements when the air is dry, But the air humidity or condensation of water, extremely easy to cause the insulation between the connector and the cabinet fell, even the occurrence of air breakdown discharge or short circuit and other accidents. The IPM-TH21-S1 dehumidifier using semiconductor refrigeration technology, local cooling in the cabinet, causing local condensation, precipitation and water discharged out of the cabinet. Reduce humidity fundamentally destroy condensation condition, effectively prevent condensation to produce. The dehumidifier can be used in the 10 kV ring network cabinet, substation terminal box, reflux box, communication box etc.