晋隆煤矿洗煤厂变电所并联电容无功补偿系统设计.pdf

摘要 在电力系统中，存在消耗大量无功功率的装备，并且这些装备的使用将致电力系统 的电压的剧烈波动。例如大型三相异步电机，变压器等。同时用户中又有对系统电压稳 定性有较高要求的精密设备：如自动化生产线，电子产品等。如果无法及时把控无功功 率，则会对电压产生不利影响甚至将致电压崩溃。此外，无功功率备用的缺乏将致电网 电压水平的降低。综上所述，如何快速有高效的解决电力系统无功缺电具有重要的社会 意义。 对无功补偿柜的设计分为七个部分，第一介绍国内无功的功率问题，与无功的补偿 目的与依据。第二介绍补偿电力网无功原理。第三部分负荷的算和无功的补偿容量的计 算。第四部分并联电容器的接线、装设、控制、保护。第五部分一次设备的选择与一次 原理图。第六部分二次设备的选择与二次原理图。第七部分无功补偿柜的布置图与接线 图。 关键字：无功补偿 无功优化 电力系统 补偿电容器 Abstract In power systems, there are equipment that consumes a large amount of reactive power, and the use of such equipment will cause drastic fluctuations in the voltage of the power system. For example, large three-phase asynchronous motors, transformers, etc. At the same time, users have sophisticated equipment that has high requirements on system voltage stability: such as automated production lines, electronic products, etc. Failure to control cut down power in time will adversely affect the voltage and even cause voltage collapse. However, the little of reactive power level will cut down the voltage reserve of the power. How to finish the question of reactive power absence in marginal system fastly and validly has important social significance. The paln to the compensation cabinet of reactive power is planed in seven parts. The one of it is to introduct the Chinese reactive power question and the basis of reactive compensation The two of it is to introduct how to make the reactive power up. The third of it is part of the load and the calculde of the reactive level. The wiring, installation, control and protection of the fourth part of the parallel capacitor. Selection of primary equipment and primary schematic diagram. The fifth part is primary equip ment selection and primary schematic diagram. The sixth part is secondary equipment