| Jacking control system is a key part of self-elevating offshore wind turbine installationvessel, whose performance guarantees legs and vessel platform to realize lifting anddropping smoothly. The major research contents of this paper are as follows.1. Jacking device and principle of the installation vessel are comprehensively analyzed.The overall scheme of the jacking system of the wind turbine installation vessel is designed.According to this basis and demands, jacking control system which is based on thePROFIBUS fieldbus technology of offshore wind power installation vessel is constructed.And design of the hardware, communication betweens master and slave station, logicalfunctions and etc. is completed. The jacking control system realizes the whole jackingcontrol of the wind turbine installation vessel.2. In order to ensure the levelness of the vessel platform meets the requirement in theprocess of lifting, automatic balance methods of the same type platform at home and abroadare analyzed. A leveling scheme by the proportion reversing valve as the actuator isproposed. The leveling principle of heavy platform is studied and an automatic balance ismethod given. After control strategy of PID is studied, MATLAB software is used tosimulate the system. From the simulation, we know that PID control algorithm canobviously improve the quality of the control.3. Through the integration of the configuration software WinCC and STEP7software,the monitoring system is developed. Man-machine interface of the jacking control system isdesigned. Operating management and authority is set and running state is recorded.Visualization monitoring of the process variables is realized. Through the development ofthe ActiveX control, monitoring system can dynamically display the working process of thedevice.4. Prototype system of wind turbine installation vessel is developed and test. Hardwareconfiguration of PROFIBUS-DP network, monitoring system and logical control system istest. The functions such as the control of lifting and dropping vessel and legs, regulation ofthe vessel balance, display of the system process and fault alarm can verify the correctnessof the system. |
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