CAJ | 학술논문

针对统一潮流控制器( UPFC)在调节电力线路潮流过程中存在的有功和无功功率相互影响等问题，通过分析UPFC数学模型，从UPFC实现传输线路潮流调节作用的角度出发，提出了并联变流器稳压控制、电压电流双闭环控制方法和串联变流器电压、电流、功率三环解耦控制策略，实现了UPFC直流电容电压恒定、输入端交流母线电压稳定和独立调节有功、无功潮流的功能。通过搭建UPFC并网仿真模型，验证了该控制策略在电力系统潮流调节中的有效性和可行性。
침대통일조류공제기( UPFC)재조절전력선로조류과정중존재적유공화무공공솔상호영향등문제，통과분석UPFC수학모형，종UPFC실현전수선로조류조절작용적각도출발，제출료병련변류기은압공제、전압전류쌍폐배공제방법화천련변류기전압、전류、공솔삼배해우공제책략，실현료UPFC직류전용전압항정、수입단교류모선전압은정화독립조절유공、무공조류적공능。통과탑건UPFC병망방진모형，험증료해공제책략재전력계통조류조절중적유효성화가행성。
Active and reactive powers interact in the process of power line flow regulation for unified power flow con-troller ( UPFC) . To solve the problem, the mathematical model of UPFC is analyzed, and the voltage control and dual closed-loop control method of voltage and current to the shunt converter, as well as three loop decoupling control strat-egy of voltage, current, power to the series converter are proposed from the perspective of transmission line flow regu-lation with UPFC. These controls realize the capabilities of constant capacitor voltage, voltage stability of AC bus and independent active and reactive power flow regulation to UPFC. A grid-connected simulation model of UPFC is estab-lished to verify the effectiveness and feasibility of the control strategy in power flow regulation.