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一、概况 开滦唐山矿是一个有一百多年开采历史的老矿。由于井深巷远,运输系统十分复杂。该矿平巷主要靠架线式电机车运输。运输距离过长,给直流电带来很多困难。50年代时,牵引变流所是与井下中央配电站合建在一起的。当时由于产量较低,运输距离又不算太长,这样由井口中央配电站的牵引变流所统一向各水平大巷供电,并没有发现多大问题。到了60年代,由于产量不断上升,运输量不断加大,运输距离不断延长,还由井口中央配电站的牵引变流所统一供电,就当时而言,我们发现有如下几个问题:
I. Overview Kailuan Tangshan Mine is a mining history of more than 100 years old mine. Due to the deep well, the transport system is very complicated. The mine lane mainly by the overhead electric locomotive transport. The long transport distance brings many difficulties to the DC. In the 1950s, the traction converter was co-located with the central underground substation. At that time, due to the low output, the transport distance is not too long, so by the wellhead central distribution substation traction converter uniformly to the level of the road supply, and did not find much problem. By the 1960s, due to the continuous increase of output, the continuous increase of transportation volume and the continuous increase of transportation distance, the unified power supply was provided by the traction converter of the central wellhead substation of Wellhead. At that time, we found the following problems: