标题：Frequency Stability Control Research of AC Grid Based on HVDC Transmission System [基于直流互联的交流电网频率稳定控制研究]
作者：Sun K.; Li K.; Lakshmi S.; Yilu L.; Pan J.; Sun H.
作者机构：[Sun, K] School of Electrical Engineering, Shandong University, Jinan, Shandong 250061, China;[ Li, K] School of Electrical Engineering, Shandong Uni 更多
来源：Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering
关键词：AC grid; Frequency stability control; HVDC; Primary frequency control; Secondary frequency control
摘要：Interconnecting AC grids with HVDC transmission system has become a promising solution for solving the issues of large grid interconnection. Sharing frequency response reserves through HVDC transmission system among the asynchronous power systems is expected to improve the economics of grid operation and the frequency recovery against critical disturbances. In this paper, a novel frequency response control strategy for HVDC link was proposed. The HVDC transmission system will take part in the primary frequency control to provide fast emergency power support to stabilize the system frequency and help the system to establish a secure settling frequency. The HVDC transmission system will also participate in the secondary frequency control for returning the system to the nominal operation frequency. Simulation results show that the proposed control is effectiveness and have good performance. © 2020 Chin. Soc. for Elec. Eng.