发电厂及变电所的微机监察与测量

本文介绍的系统是利用Z—80单板机对发电厂和变电所进行监察与测量,它以中断方式及时地发现直流系统的接地和绝缘下降,检测出绝缘阻值,找出故障支路,该系统还能在小接地电流系统中巡检交流单相接地,自动查出接地故障路线,此外,还可以对运行参数(频率、相角、Cosφ、电流、电压、有功、无功和电能)自动测量和记录,进行越、复限处理。本系统对上述各测量结果可巡回显示、定时打印字表和曲线。

Microcomputer Monitoring and Measuring of Power Plants and Substations

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.