变压器式可控电抗器的控制绕组无功容量分析

分析比较两种不同绕组控制方式下的电抗器:晶闸管控制方式(thyristor con tro llab le reactor,TCR)和先进静止无功发生器控制方式(advanced static var generator,A SVG)。针对TCR控制方式在轻载或空载存在死区的问题,提出将第一级控制绕组采用A SVG控制方式,以增加可调性并减少谐波含量。将多并联支路型可控电抗器的支撑导通法,应用到变压器式可控电抗器的绕组功率控制上,通过第一级A SVG控制绕组和其它TCR控制绕组的相互配合,实现连续平滑调节。针对无功容量最优分配问题建立了相应的数学模型,并以此确定出各级绕组最佳的功率容量分配。

Reactive Power Capacitance Analysis for Controllable Shunting Reactors of Transformer Type

Firstly,it is described in the paper of the basic structure and principle of controllable shunting reactor of transformer type(CSRT) and hybrid controllable shunting reactor of transformer type(HCSRT).Two control modes of TCR and ASVG are compared according to the analysis of their impacts on the power system.Since there exists dead space under TCR mode when having no load or light load,it is proposed in the paper that the first controlled coil should operate at ASVG mode while the other coils should work at TCR mode just in conduction or closed states.Then the sustained conduction method of controllable reactor in multiple parallel branches is applied to CSRT.And its mathematical model is constructed to determine the optimal distribution of reactive power in each winding level of CSRT.