基于多cpu控制的33kv组合磁力控制站测控系统的研究.docx

奎堕望王查堂堡主堂焦堡壅一——
Study on Measurement and Control System for Vacuum ic Switchgear in Underground works Based on Several CPUs
Abstract
The research project in this thesis is an important part of“Study Oil Measurement and Control System for Vacuum ic Switchgear in Underground works Based on PLC”()which is sponsored by Science and Technology Department of Shanxi Province. Building up也e fully mechanized face with hi幽production and efficiency supplied by works has been the trend to develop the coal industry in onr ,because of slow development of related industry at home,the electrical switchgears in underground
works are mainly imposed from foreign long
supply period of the fittings in switchgears and their hi曲price are the key factors which badly hindered the development and popularization of power supply technique in underground it is hence
important to develop the measurement and control system bined vacuum ic switchgear applied in underground works.
The present developing situations bined vacuum ic switchgear are firstly presented and the importance and necessity to develop the measurement and control system of 3_3kV vacuum ic switchgears are ,the function specifications,the control principle and
奎璺垄三盔堂堡圭堂笪笙塞
technical requirements arc established and the control strategies and methods
are drawn up.
According to the actual requirements of loads in underground mechanized face,the overal|design scheme that three CPUs unite for controlling and protecting the motors is proposed and the real—munication systems between PLCs。PLC and MCU and PLC and color
liquid crystal display are terms of the safe mquirerrmnts of electrical equipment in underground,an excellent intrinsically safe pilot circuit iS designed,the fault characteristics of motor and works are analyzed,protection measnrerflents are brought forward and the
technical parameters corresponding