| This paper explained comprehensive automatic control system of rectification power supply system in aluminium electrolysis field in detailed.The paper stated the enforcement method .of the system" and introduced PI neutral networks controller.it is a control method that fit for mathematical model and complicated DC current regulation system which used in aluminium electrolsys.It is a new developing technology to adapt comprehensive automatic system in power supply system of aluminium electrolysis in the recent years.The comprehensive automatic system is a kind of automatic monitoring and protection technique,and the technique is extensive used in intelligent protection and supervision system of power distribution and supply system, the core of the technique is microprocessor.The traditionalinduction relay and electromagnetic relay will be all instead by digital intelligent protection relay, and the routine analog measurement meter will be improved to be intelligent meter. A digital comprehensive automatic control, operation, protection and check system is formed after these two changes combined together. The power supply system which containing the comprehensive automatic system was designed on the basis of special requirement from aluminium electrolysis to rectification power supply system, and according to the current actual operation situation,the existing system's running condition we got in our plant as well.The system is suit for the character of our running system and it could meet the demand of power supply for aluminium production. The purpose of this paper is also to introduce a control method that is suitable for DC stable current control systems whose mathematical models are Neural networks -a method for handling the uncertainty of problems, may apply to the industrial process control problems to compensate the problems that traditional analytical control methods cannot overcome, such as system's non-linear, time-varying character, the unmeasurementof state variables, the failure of sensors, etc., in order to increase the robustness, stability and safety of control systems. |
