林俐;胡景生;

• 1:电力系统保护与动态安全监控教育部重点实验室(华北电力大学)
• 2:沈阳变压器经济运行研究所 北京市 昌平区 102206
• 3:辽宁省 沈阳市 110011

摘要(Abstract)：

配电网变电站三绕组变压器的无功补偿大多数是在低压侧安装并联运行的单组或多组电容器,传统上电容器投入与否或投入几组是根据变压器电源侧的功率因数大小来控制。这种控制方法的缺点是:仅考虑功率因数提高减少了变压器损耗的因素,而忽视了投入电容器介质损耗增大的因素。讨论了配电网两台三绕组变压器中压侧分列低压侧并列运行时,并联无功补偿电容器的经济运行;根据变压器损耗与电容器介质损耗之和最小的原则分析计算投切电容器组的临界负载,发现在某些条件下提高功率因数不仅不节电反而浪费电量;并在此基础上提出判断电容器经济运行的方法:最后举例说明了经济运行的节电效果。

关键词(KeyWords)： 三绕组变压器;电容器组;经济运行;:无功;功率因数;介质损耗;配电网

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 林俐;胡景生;

Email:

DOI: 10.13335/j.1000-3673.pst.2006.07.018

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