Microcomputer Monitoring and Measuring of Power Plants and Substations
Huang Shoumeng; Su Wenbin; Huang Xiangji
The system introduced in this paper is used for monitoing and measuring of power plants and substations by means of a Z—80 single board computer. It finds in time with breaking-up mode the earth and insulation of DC system decreasing, and detects, the insulating resistance value and fault branch circuit. This system can also itinerantly check the single phase carthing in the small earth current system, and automatically detect the earthing fault circuit. Moreo(?)er, it can automatically measure and record the operational paramters for powerp lants and substations, such as frequency, pha(?)e—angle, cosφ, active power, reactive power, and electric energy, etc.