Research And Realization Of Small Water And Electricity Digital Power Set Protectivedevice

The water resources are extremely rich in our country.Permitting reasonably to develop the water resources and construct the small hydroelectric power station is not only useful for our country and people'benefit but also to play an extremely essential role in speeding up the local economy development and reducing the local economical difference.Because thesmall hydroelectric power station is the small scalemanagement body, investment scale is small and its automated partial investment is less, therefore the price factor is very important. Its management main body is the farmer or the countryside technical personnel. Because their technical level is not high, the corresponding equipment must not only be easy to install and operate,but also do not need to maintenance it.Moreover at present from domestic to overseas,there is not a unique product to protect the generator of small hydroelectric power station.This article develops one kind protective device of generator based on the small hydroelectric power station.The cost of which is low,but the performance is good and it is simple to install and maintenance.This article has made a more comprehensive summary to the history of generator protective device of small hydroelectric power stations from the domestic to foreign country.The article also in detail introduces the demand characteristic of the generator protective device, and determines the protection function which needs to dispose.In order to realize the protective function,the article introduces the algorithm and principle of protective device.It also analyzes the use of software algorithm of cycle,Fourier algorithm,triple frequency filter and so on in installment.Revolved the equipment product project to decompose,the article introduces the installment hardware design.The key point is the DSP hardware platform of protecting CPU,the man-machine dialogue kneading board and the equipment hardware project.The software design of the installment is introduced .The key point is the master routine and each protection function module.Finally,the equipment has been carried out the massive forms experiment and moving-mold experiment.The good effect has been obtained which has comprehensively confirmed the design rationality of this installment.