| With the continuous deterioration of the environment around the world,green and environmentally friendly life philosophy has been more and more people’s attention,the electric vehicle industry because it is very responsive to our energy-saving emission reduction concept has been rapid development.As a new type of vehicle,electric vehicles have a great advantage in solving the energy crisis and reducing the emissions of carbon dioxide and sulfur dioxide,which has attracted wide attention from governments and energy enterprises.At the same time,large-scale application of electric vehicles will have a negative impact on the load characteristics,power quality,operation control and other aspects of the grid.Therefore,for the electric vehicle load in a certain area,it is important to study whether it has controllability in the time sequence and how much control ability the control party has.The current electric vehicle energy supply mode is divided into charging mode and power mode.For the electric vehicle load with the energy supply mode in the region,it is researched whether it has controllability in the timing,and how much regulation ability it has on the grid side,it can make the upper dispatching department carry on the targeted electric vehicle load Optimization and control,to improve the regional load characteristics,balance the new energy output and other purposes.For the electric vehicle load which adopts the power supply mode in the region,it is studied whether the load of the backup battery pack in the power station has controllability in the timing,and how much regulation capacity the operator can have.After load peak,valley time and other load regulation demand period,through the development of the corresponding charge plan to respond to the incentive measures to achieve the system operation requirements,while promoting the efficient and economic operation of the transformer station.The state matrix of the electric vehicle is set up according to the state parameter of the parked electric vehicle;secondly,the status of the electric vehicle which is stopped is grouped and the charging behavior of the electric vehicle in a controllable state is carried out Finally,the load margin zone of the controllable electric vehicle is calculated by using the recursive idea,and the corresponding active control strategy is put forward for the specific control target.For the electric vehicle load in the mode of electric power exchange,firstly,the state matrix of the battery pack is established according to the state parameters of the battery pack in the transformer substation;secondly,the battery packs are grouped to control the battery packs in the controllable state;,Use the recursive thought to study the controllable load margin zone of the backup battery pack in the transformer station,and then guide the operator to formulate the corresponding charging plan according to the operation target of the grid enterprise. |