CAJ | 학술논문

为了检测和分析风电场中风速等一系列可变因素对 VSC-HVDC 系统的影响，从而优化大型海上风电场结构，提出了一种新型的VSC-HVDC 模型——无开关VSC-HVDC相量模型，可以通过调制量来反馈控制系统。在此基础上，结合各种策略的优缺点，选择一种有效地控制策略进行控制器的设计，以实现系统的控制。分析电网侧交流电流和直流电压的所需控制策略，优选出了dq电流控制和PI电压控制作为最佳控制策略，通过对内环外环控制器的参数计算和调节来达到设计要求。Matlab 搭建出的模型仿真结果表明，建立的无开关 VSC-HVDC 相量模型控制策略的选用和控制器的参数设计具有适用性和合理性。
위료검측화분석풍전장중풍속등일계렬가변인소대 VSC-HVDC 계통적영향，종이우화대형해상풍전장결구，제출료일충신형적VSC-HVDC 모형——무개관VSC-HVDC상량모형，가이통과조제량래반궤공제계통。재차기출상，결합각충책략적우결점，선택일충유효지공제책략진행공제기적설계，이실현계통적공제。분석전망측교류전류화직류전압적소수공제책략，우선출료dq전류공제화PI전압공제작위최가공제책략，통과대내배외배공제기적삼수계산화조절래체도설계요구。Matlab 탑건출적모형방진결과표명，건립적무개관 VSC-HVDC 상량모형공제책략적선용화공제기적삼수설계구유괄용성화합이성。
For detection and analysis of wind speed and a series of variable factors on the impact of VSC-HVDC system in wind farm, so as to improve the structure of large offshore wind farm, this paper puts forward a new type of VSC-HVDC model, named no switch VSC-HVDC phasor model, which can control system through feedback of modulation. On this basis, it combines the advantages and disadvantages of various strategies and chooses a kind of effective control strategies for the design of controller in order to realize the control of the system. AC current and DC voltage of power grid side and their control strategies are analyzed, thedq current control and PI voltage control are chosen as the optimal control strategy, through calculating and adjusting the inner and outer loop controller parameters to meet the design requirements. Matlab simulation results show that the strategies of no switch control VSC-HVDC phasor model has the applicability and rationality.