Study on frequency stabilization of asynchronous network system including high-proportional electrolytic aluminum load
Based on the background of asynchronous interconnection between Yunnan Power Grid and Southern Power Grid,the impact of electrolytic aluminum load and frequency limit controller on the frequency stability of Yunnan Power Grid is discussed.Firstly,the electrolytic aluminum load with increasing load size was studied,a load model reflecting the frequency and voltage power response of the electrolytic aluminum load has been devel-oped for its load composition and characteristics,and simulations have been conducted to verify it;secondly,the dynamic frequency regulation process of FLC and governor is analyzed after the high power disturbance of the sys-tem,and it is shown that if the dead zone of FLC is not set properly or the response of governor is too slow,the DC line will be overloaded for a long time,which is not conducive to the safe and stable operation of power system.Based on this,the deadband arrangement of FLC and the method to optimize the performance of governor are pro-posed.Finally,using the actual data of Yun-Guang DC project for simulation,the impact of the access of electro-lytic aluminum load on the frequency stability of the system under single and double pole blocking fault is analyzed,and the effectiveness of the frequency regulation strategy proposed in this paper is verified.
asynchronous connectionhigh-proportional electrolytic aluminum loadfrequency limit controllergovernor system
万方数据
维普
