计及无功补偿影响的配电变压器投切策略研究

Study on distribution transformers′ switching strategies with consideration of influence of reactive power compensation

变电站通过电容器组完成无功补偿后,负荷曲线发生变化导致变压器所在的经济运行区间变化,故应针对变化了的负荷重新计算投切策略。阐述电容器无功补偿对负荷曲线的影响,针对修正后的负荷曲线重新计算变压器的投切策略,与未计及补偿影响的投切策略比较节电效益。通过算例中前后节电效益的比较,说明了计及无功补偿影响对配电变压器经济运行的有一定的必要性。

The reactive compensation by capacitor banks for substations tends to make the load curve change,which may result in shifting of the economic operation range of the transformer.So it′s necessary to have a new switching strategy for the transformer.Firstly,the influence of reactive compensation by capacitor banks on the load curve was illuminated,and secondly new switching strategies for modified load curve were developed and compared with the original ones which did not consider the influence of reactive compensation. The results proved the new strategies effective.