The Research Of Hybrid Power System About Wind And Electricity For Air Compression In Coal Mine

In order to solve the problem about resource exhaustion and the utilization of wind, thispaper designs hybrid power system about wind and electricity for air compression in coal mine,and it opens up a new space of the development of wind power.Based on wind turbine, the system drives the air compressor with the supplement of electricmotors. When wind is enough, air compression is driven by wind turbine, motor is in a restingstate by this time. When wind is insufficient, air compression is driven to produce thecompressed gas by motor. Then the compressed gas is stored for all kinds of pneumaticequipment, to realize the enough savings greatly.This system selects Siemens PLC-200as cybernetics core, and every key link is collected,analyzed, disposed. According to these messages, PLC sends corresponding instructions tocontrol the stop-start of machine, valves, switch, malfunction indicator and buzzer, it assures thewhole system has a smooth and stable operation. MT6070iH2is chosen as display and inputdevice, operators can modify preinstall parameter and adjust the state of output device forefficiency and flexibility.Not only that, WinCC configuration software is installed to monitor working process andmajor parameter in real time on upper computer. That workers can make an accurate and timelyjudgment to abnormal situation, it insures the safety of the whole working process.Finally, process communication is set up through the connection between upper computerwith WinCC and Siemens PLC-200. Then the system is debugged and the feasibility andstability are tested through experiment. By test, the system works steadily. And there are lots ofadvantages in this system, such as high degree of automation, good safety, lower cost, easy tomaintain, no noise and pollution. This system will be broad prospects by continued improvement.