The Research And Application Of Improved Differential Evolution Algorithm In LZ-AVC6000 System

In recent years,according the rapidly development economy of world,energy has been driving the economic development of the world,and the demand of non-renewable resources is becoming more and more big.At the same time to speed up the natural resources have been exhausted.In order to solve the problem of environment and energy,using new energy instead of traditional energy sources is imperative,in recent years,countries around the world in the exploration of new energy have gained a lot of results.The use of wind power technology has been mature,wind power has broad prospects and good economic benefit,wind power is the most suitable for commercial development and the most promising way to generate electricity.The large-scale wind power into power system will greatly affect the security and stability of system operation,when the voltage change is too big and even cause the consequence of voltage collapse.With the current mainstream interconnection fan are introduced in detail,analyzed in this paper,we study the doubly-fed wind turbines.Type concrete analysis of doubly-fed wind turbine operation principle,mathematical model of the steady state,active power,reactive power and type containing doubly-fed wind turbine in the power system flow calculation method.The static voltage stability index was introduced in detail,at the same time on voltage stability analysis method and the reactive voltage control measures have been studied in detail.The wind farm reactive power compensation is studied in detail,at the same time,the principle of differential evolution algorithm is studied in detail,on the basis of the basic principle of an introduction is given to enhance operator to the algorithm of differential evolution algorithm is improved,the selection of a domestic actual data of wind farm are simulated,the simulation results show that the improved algorithm in this paper,the contrast reference provided by the algorithm has more accurate calculation results and faster computing speed.The LZ-AVC6000 system structure were studied,completed the topology of the reactive power compensation voltage control system AVC and sampling circuit and the design of the work,completes the hardware drivers,and integration of hardware and algorithm,write the final test and analysis to the system.