Large-scale New Energy Power Generation Focus On The Influence Of The Grid Voltage In Turpan Area

Amid rising environmental pollution and energy shortage,vigorously develop clean energy such as wind power,photovoltaic power generation has been imperative.Wind power,photovoltaic and other new energy is a clean renewable energy,developing wind power,solar power generation has become an important task of current energy work,speed up the development of wind energy,solar power is not only the long-term direction of the electric power industry development in our country,is the important supplement of the conventional energy,to adjust the energy structure,protect the environment,climate change and promote sustainable development plays an important role.Known as the fire in the turpan region not only have relatively rich resources of light and relatively rich resources of wind such as XiaoCaohu area,as countries the implementation of the "region",as the silk town of turpan vigorously develop clean energy such as wind power,photovoltaic power generation technology,the scale of wind power,photovoltaic power generation capacity have accounted for 73% of the total installed size.Wind power,photovoltaic power generation from the normalized thermal power toward rapid development makes the power structure of volatile clean energy development,load from stability to impactand with the rapid development of the electric iron,in the power structure and load properties change quickly,and did not keep up with the pace of development of the spatial grid structure has been in a state of lag.Grid structure tend to be complicated,local area there are single monovariant weak link,according to?The National Grid Accident Screening ?procedures,since 2015 the turpan Removed to build the city,put forward higher request,make regulators face severe challenges.The rapid development of Wind power,Photovoltaic power generation,High-speed train load,will cause beyond trend is difficult to adjust,voltage adjustment,N-1 accident in power grid will lose a lot of load,brings to the safe and stable operation of power grid must safe hidden trouble.So the scale of wind power,photovoltaic power generation,high iron concentration grid is of great importance to the impact on power grid.In order to make the wind power,photovoltaic power generation,high iron concentration safe and stable operation after the grid,must besimulating by the operation characteristics of various kinds of mode.Based on wind power,photovoltaic power generation not friendly interconnection analysis of the problems are the following:First analyze the structure of turpan power grid power supply,power grid load and grid space truss structure,the situation of new energy grid and grid given the problems existing in the process and the influence of impact load of power grid,such as electric iron;The second set up a simulation model in PSASP and verify the accuracy of the model;Finally analysis of the scale of wind power,photovoltaic power generation system connected to the electricity grid for grid tide,the influence of the grid voltage,photovoltaic power generation system output change and high-speed impact load interaction on the access point of busbar voltage with Turpan electricity grids,Stability analysis of turpan power grid security after the new energy access.Through the analysis find,in terms of turpan region grid large-scale wind power because of the long distance grid docking with greater influence on the substation busbar voltage,need to pretend to optimize the voltage reactive power compensation devices.In connect with electrified railway load bus with photovoltaic power supply at the same time,in order to reduce the mutual influence between them,from two source solve the problem of power grid voltage fluctuation.Turpan 750 kv 1# main transformer high pressure side permanent N-1 failure,Turpan Internet power was delivered all through 750 kv 2# main transformer,the power is about 1500 megawatts,but turpan primary has a nominal capacity of 1500,reach its thermal stability limit.Provides some reference opinions in order to optimize the grid structure,revitalize the power grid operation mode,optimizing the system voltage.