【摘要】 提出一种基于碰通可控的可调电抗器的新原理,通过对带气隙变压器的电压方程分析得知,当在变压器的二次侧采用有源的方式注入一个与一次侧电流频率相同、相位相反的电流时,随着注入电流的幅值的变化,变压器的主磁通会发生连续变化,从而实现了变压器的一次侧阻抗的连续无级可调。此新原理可用于故障电流限制,控制电力系统潮流,消弧线圈和TCSC(晶闸管控制串联电容器)等领域,在电力系统柔性输电装置中将有广阔的应用前景。实验结果证明此新原理的正确性。更多还原

【Abstract】 In the paper, a novel principle of adjustable reactor based on magnetic flux controllable is proposed. The secondary winding of a transformer is inversely in phase injected a current producing by a voltage source inverter, which has the same frequency as the current of the primary winding. According to the transformer’s voltage equations, the main magnetic flux of the transformer will vary continuously along with the continuous change of the injected current’s amplitude; therefore, the equivalent impedance of primary winding of the transformer will change continuously. The new principle can be used in the many fields, such as fault current limiter, power system load flow control, TCSC, etc, and many FACTS equipments can be implemented in terms of the new principle. The validity of the theory is proved by the excellent experiment results.更多还原