Study on External Power Receiving Planning of Receiving-end Grid in AC/DC Hybrid BackgroundLiangdong Qin, Jing Zhang, Ying Wang, Peng Xi, Ning Wang, Zhendong Wan and Shujing YangE3S Web Conf., 236 (2021) 01013DOI: https://doi.org/10.1051/e3sconf/202123601013