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电容器无功补偿,在我国一些煤矿至今还没有引起足够的重视,这是技术经济上的一大损失。我们知道,煤矿用电的自然力率是很低的,一般在0.4～0.8之间。随着昼夜负荷的变化,从电网吸取大量的无功。之所以如此,客视上例如:防爆型电动机力率偏低,国内尚未生产防爆型同步电动机,主观上例如:矿用变压器运行多不能接近满载,防爆电动机容量多不能合理选配。在尽量采取措施提高自然力率的基础上,充分采用电容补偿是极其必要的。其主要效益有以下几点:
Capacitor reactive power compensation, some coal mines in our country have not yet attracted enough attention, which is a major technical and economic losses. We know that the natural power of coal mines is very low, generally between 0.4 ~ 0.8. With the day and night load changes, drawing a lot of reactive power from the grid. The reason for this, depending on the guest, for example: explosion-proof motor power is low, the domestic production of explosion-proof synchronous motor has not yet been subjective, such as: mining transformer can not operate close to full load, explosion-proof motor capacity can not be more reasonable matching. On the basis of taking measures to increase the natural force as much as possible, it is extremely necessary to fully utilize the capacitance compensation. The main benefits of the following points: