CAJ | 학술논문

无功控制功能是高压直流输电系统的重要功能。±800kV云广特高压工程除了采用传统高压直流输电工程的无功控制策略外，还采用无功后备控制功能作为无功控制功能的补充。文中分析了无功后备控制功能的控制策略和实现方法，指出当极控与直流站控系统的控制总线通信均故障时，无功后备控制功能存在缺陷，提出了改进方案，该方案在现场得到应用。
무공공제공능시고압직류수전계통적중요공능。±800kV운엄특고압공정제료채용전통고압직류수전공정적무공공제책략외，환채용무공후비공제공능작위무공공제공능적보충。문중분석료무공후비공제공능적공제책략화실현방법，지출당겁공여직류참공계통적공제총선통신균고장시，무공후비공제공능존재결함，제출료개진방안，해방안재현장득도응용。
As an important function of the high voltage direct current （HVDC） transmission system, the reactive power control function is used in Yunnan Guangdong -t-800kV ultra-high voltage direct current （UHVDC） transmission system just like in the traditional HVDC system. In addition, the reactive power backup control function is used in the UHVDC system as a supplement. The control strategy and realizing method of reactive power backup control function are analyzed. It is poirtted out that when the control-bus communication of both the pole control and the DC station control becomes faulty, the reactive power backup control function is found defective. An improvement proposal is made and applied on the spot in the Yunnan-Guangdong ±800 kV UHVDC transmission system.