Research On Performance Improvement Of Primary Frequency Regulation About Xinjiang Power Grid

The primary frequency regulation capability is one of the basic characteristics of generating units of grid connected,it can effectively suppresses the change of the power grid frequency,which makes the power system capable of rejecting disturbances.Power system frequency stability is very important factor to the power grid could maintain its safe,frequency anomaly or frequency collapse will brings extremely serious consequences to power system and the user.In November 2010,xinjiang power grid and the northwest power grid interconnected by 750 kV transmission line.But for now xinjiang power grid is still in the development period of networking,overall power grid structure is weak and vast area,in most of the power grid is a single long weak links,frequency stability problems are still prominent,at the same time because of the use of large-scale wind power,solar power and other new energy,make the power grid of peak-load and frequency regulation difficulty increasing.The paper introduces the related concepts about primary frequency regulation and the importance of frequency control,the primary frequency regulation current situation of xinjiang power grid is analyzed.Combined with a large number of data from he northwest power grid test of primary frequency regulation in 2015,analyzes the test process and problems of xinjiang power grid,hydropower,thermal power unit,and a small amount of new energy power generation belong to the xinjiang power grid is analyzed.Through the research proposes a coordinated control method about the AGC and frequency modulation of hydropower and Thermal power unit,effective improvement Reverse adjustment problems about the frequency.By increasing the frequency control function of steam turbine pressure control mode,the frequency control of the voltage control mode is improved.Finally,the frequency response of the new energy modification is presented.On the basis of the improvement project to complete,summarizes the difficulties and problems,combining with technology and management experience about xinjiang power grid,the primary frequency regulation technology improvement and management Suggestions are put forward,To continue to assure the frequency stability of the grid to provide a reliable experimental basis and beneficial experience for reference.