【作者】 邹亚麟； 肖仕武； 方华林；

【Author】 ZOU Ya-lin XIAO Shi-wu College Of Electrical And Electronic Engineering,North China Electric Power University,Beijing 102206,China; FANG Hua-lin Beijing Power Electric Power Corporation,Beijing 100031,China

【机构】 华北电力大学电气与电子工程学院； 北京电力公司；

【摘要】 具有不同电压等级高压母线的电厂,在发生厂用电环并切换时,由于厂用电电源来自不同的电压等级,将形成高低压电磁环网并产生环流,此环流将影响环网的潮流分布,可能造成厂用供电设备过载,危及厂用电的安全运行。本文以某电厂为例,使用BPA潮流计算程序,分析了此种情况下环流的产生机理及环流如何影响环网的潮流分布,并提出了通过对环流的控制来有效改善潮流分布的控制策略和方案,保证厂用电设备的安全运行。更多还原

【Abstract】 Because the plant source comes from different voltage buses,when switch operation happens on the bus of plant source in the power stations with high-voltage buses in different levels,it will form a looped electromagnetically coupled power network mixed with high and low voltages,and will generate circular power flow,which may affect the power flow of the circular distribution network,result in equipment overload and endanger the safety of operation of plant source.Taking a power station as an example, under the use of the BPA procedures,creating mechanism of the circular power flow in such cases and how it affects the power flow of the circular distribution network are analyzed,and effective controlling strategies and programs of the circular power flow for the improvement of the power flow of the circular power network are provided to ensure the safety of plant source supplying equipments.更多还原