CAJ | 학술논문

以高压直流输电系统快速可控为出发点，采用极大极小值原理和改进粒子群优化算法相结合的新方法，针对向家坝—上海±800 kV 特高压直流输电系统送端可能发生的次同步振荡(sub-synchronous oscillation，SSO)问题，建立一种基于比例积分微分控制的 UHVDC 附加次同步振荡阻尼控制器(subsynchronous oscillation damping controller，SSDC)模型。对不同方式的时域仿真结果表明，该SSDC控制器能够有效抑制交直流互联电网送端系统汽轮机组的轴系扭振，可在相当大范围内保证系统的 SSO 稳定性，具有较强的鲁棒性。
이고압직류수전계통쾌속가공위출발점，채용겁대겁소치원리화개진입자군우화산법상결합적신방법，침대향가패—상해±800 kV 특고압직류수전계통송단가능발생적차동보진탕(sub-synchronous oscillation，SSO)문제，건립일충기우비례적분미분공제적 UHVDC 부가차동보진탕조니공제기(subsynchronous oscillation damping controller，SSDC)모형。대불동방식적시역방진결과표명，해SSDC공제기능구유효억제교직류호련전망송단계통기륜궤조적축계뉴진，가재상당대범위내보증계통적 SSO 은정성，구유교강적로봉성。
Taking the fast controllability of HVDC system into consideration, the model of supplementary subsynchronous oscillation damping controller (SSDC) on the basis of proportional-integral-derivative (PID) control was established to solve the potential sub-synchronous oscillation (SSO) problem in the sending end of ultra-high voltage direct current (UHVDC) transmission system from Xiangjiaba to Shanghai. A new method which combining mini-max value principle and improved particle swarm algorithm together is put forth so that the parameters of the controller could be designed and optimized conveniently. The time domain simulation results of different operation modes show that the SSDC designed is with strong robustness and can effectively restrain the shaft torsional vibration of steam turbine units.