CAJ | 학술논문

基于磁控电抗器(MCR)中自励磁式MCR励磁稳定性不高,铁心的直流励磁电流在电网电压波动时易受影响的弊端,提出了一种外励磁式MCR,对其工作原理和结构进行了介绍.外励磁式MCR装置包括MCR本体和励磁控制系统;设计了以单片机为主控芯片的动态无功补偿装置,该装置由外励磁式MCR装置、固定电容器(FC)滤波器和无功补偿控制单元3部分组成.其无功补偿控制单元可分为信号取样、信号处理、信号输出、显示等模块,对控制单元的软件流程作了介绍.通过试验电路对装置的补偿效果进行了验证,结果表明该装置能够根据系统无功功率的情况进行补偿,功率因数能始终保持在0.95以上.
기우자공전항기(MCR)중자려자식MCR려자은정성불고,철심적직류려자전류재전망전압파동시역수영향적폐단,제출료일충외려자식MCR,대기공작원리화결구진행료개소.외려자식MCR장치포괄MCR본체화려자공제계통;설계료이단편궤위주공심편적동태무공보상장치,해장치유외려자식MCR장치、고정전용기(FC)려파기화무공보상공제단원3부분조성.기무공보상공제단원가분위신호취양、신호처리、신호수출、현시등모괴,대공제단원적연건류정작료개소.통과시험전로대장치적보상효과진행료험증,결과표명해장치능구근거계통무공공솔적정황진행보상,공솔인수능시종보지재0.95이상.
As the self-excitation MCR(Magnetically Controlled Reactor)has bad excitation stability and the DC excitation current of its core is quite susceptible to grid voltage fluctuation,an extra-excitation MCR is proposed and its structure and working principle aye introduced.The extra-excitation MCR equipment includes the MCR and the excitation control system.A singlechip-based dynamic reactive power compensation device is designed,including the extra-excitation MCR,the fixed capacitor filter and the reactive power compensation control unit.The control unit consists of the signal sampling,signal processing,signal output,display and other modules,and its software flowchart is presented.The compensation effect of the proposed equipment is verified by the test circuit and the experimental results show that it compensates the system reactive power according to the actual condition and maintains the power factor above 0.95.