Implementation of Human-Computer Interface Based on PLC-LabVIEW and Internet for Power-Demand Monitoring and Control System

• Main Authors: Chang-Yi Lin, 林昌逸
• Other Authors: 蘇偉府
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/65559196584540357477

碩士 === 崑山科技大學 === 電機工程研究所 === 98 === In this thesis, the LabVIEW graphical development software and Internet are utilized to design the human-computer interface for power-demand monitoring and control system. The TCP/IP, digital Kilo-Watt meter, RS-232, RS-485, programmable logic controller (PLC), industrial human-machine interface, and Modbus communication protocol, etc., has been combined together for the purpose of calculating the power demand and automatic load shedding via PID control. In addition to monitor data and set up parameters through the human-computer interface at the scene, via Internet and real-time power data acquisition, the system can be connected to the remote computers. Then the general software package can be adopted for the demand management, demand control and demand curve analysis. Furthermore, it also has the functions of different options display and data record to make the interface easy-to-use and operation user friendly. Therefore, the various enterprises can master the power consuming situation at any time and avoiding being fined because of surmounting the contract capacity. That is, the purpose of electrical charge saving is achieved. The human-computer interface for power-demand monitoring and control system designed in this thesis, it can be easily to install through the computer executable program to supervise and control one’s own power consumption in any location with Internet. When power system appears abnormal power consumption phenomenon, the operators can immediately manipulate to decrease the dispensable electrical charge and system stability and reliability will be increased. Thus, the installation possibility of small and medium enterprises will be increased that will be promoted the market demand and relaxed Taipower electricity shortage during peak hours.