摘要
当前的有载分接开关切换器中的2个开关借助过渡电阻,采用先合后开的次序完成不中断电流的切换过程,该方式有许多缺点。文中提出一种新型有载分接开关,可克服这些缺点。新型有载分接开关切换器中的2个开关借助过电压触发晶闸管电路,采用先开后合的次序完成不中断电流的切换过程。晶闸管电路采用高可靠性的小功率触点开关进行控制,保证新型有载分接开关有较高的可靠性。用MATLAB仿真软件中的Simulink工具箱构建新型有载分接开关仿真模型,对新型有载分接开关进行仿真。仿真结果表明:新型有载分接开关可行。
Today＇s on-load tap changer（OLTC） adopts two switches of the diverter switch taking the first close and then opened switching sequence with an ohmic resistor to achieve that the OLTC operation can be carried out without current interruptions. This way has many shortcomings. In order to overcome these shortcomings, a new OLTC is proposed in this paper. New OLTC adopts two switchs of the diverter switch taking the first open and then close switching sequence with the voltage triggered thyristor circuits to achieve that the OLTC operation can be carried out without current interruptions. The thyristor circuits are controlled by reliable and low-power contacts, to ensure that the new OLTC is of high reliability. A simulation model based on MATLAB/Simulink is built and the new OLTC is simulated. The results show that new OLTC is feasible.
出处
《高压电器》
CAS
CSCD
北大核心
2017年第4期197-202,共6页
High Voltage Apparatus
