换流站交流场控制系统的控制逻辑直接关系着直流输电系统的安全稳定运行。结合云广±800 kV直流输电工程穗东换流站的调试和运行，分析了穗东换流站交流场控制逻辑中存在的问题，总结了采取的改进措施，并分析了待改进问题。换流站交流控制系统的分析有助于提高云广直流输电系统的运行维护水平，并可以为其他交直流输电工程提供参考。

The control logic of AC system at convertor station directly affects the safe and stable operation of DC transmission system. By combining the test and operation of Suidong Converter Station in Yunnan-Guangdong ±800 kV UHV DC power transmission project, the problems of the control logic of AC system are analyzed in this paper, the improving measures are summarized and the problems still need to be improved are studied. The analysis on AC control system of convertor station could not only improve the operation and maintenance level of Yun-Guang UHV DC system, but will provide a good reference for other AC and DC power transmission projects as well.