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解析电力变压器的作用

发布日期:2018-01-19 作者:贵州变压器 点击:

解析电力变压器的作用

Analysis of the function of power transformer

贵州变压器

电力变压器是发电厂和变电所的主要设备之一。变压器的作用是多方面的不仅能升高电压把电能送到用电地区,还能把电压降低为各级使用电压,以满足用电的需要。总之,升压与降压都必须由变压器来完成。在电力系统传送电能的过程中,必然会产生电压和功率两部分损耗,在输送同一功率时电压损耗与电压成反比,功率损耗与电压的平方成反比。利用变压器提高电压,减少了送电损失。

Power transformers are one of the main equipment for power plants and substations. The functions of transformers are manifold. They can not only increase the voltage, but also reduce the voltage to voltage at all levels, so as to meet the need of electricity. In a word, both the boost and the depressurization must be done by the transformer. In the process of power transmission, there will be two parts of voltage and power loss. When transporting the same power, the voltage loss is inversely proportional to the voltage, and the power loss is inversely proportional to the square of the voltage. The voltage is raised by using the transformer, and the loss of power supply is reduced.

贵州变压器是由绕在同一铁芯上的两个或两个以上的线圈绕组组成,绕组之间是通过交变磁场而联系着并按电磁感应原理工作。变压器安装位置应考虑便于运行、检修和运输,同时应选择安全可靠的地方。在使用变压器时必须合理地选用变压器的额定容量。变压器空载运行时,需用较大的无功功率。这些无功功率要由供电系统供给。变压器的容量若选择过大,不但增加了初投资,而且使变压器长期处于空载或轻载运行,使空载损耗的比重增大,功率因数降低,网络损耗增加,这样运行既不经济又不合理。变压器容量选择过小,会使变压器长期过负荷,易损坏设备。因此,变压器的额定容量应根据用电负荷的需要进行选择,不宜过大或过小。贵州变压器小编今天就分享到这里了。

Guizhou transformer is made up of two or more than two winding coils which are wound on the same core. The winding is connected by alternating magnetic field, and works according to the electromagnetic induction principle. The installation position of the transformer should be considered for easy operation, maintenance and transportation, and the safe and reliable place should be selected. The rated capacity of the transformer must be reasonably selected when the transformer is used. When the transformer is running in no-load, it needs greater reactive power. The reactive power is supplied by the power supply system. If the capacity of the transformer is too large, it will not only increase the initial investment, but also make the transformer run at no load or light load for a long time. It will increase the proportion of no load loss, reduce the power factor and increase the network loss. So the operation is neither economical nor unreasonable. The transformer capacity is too small, which will make the transformer overload for a long time and easily damage the equipment. Therefore, the rated capacity of the transformer should be selected according to the needs of the electric load, so it should not be too large or too small. The Guizhou transformer small editor is here today.


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