Latest network systems for and future view of hydroelectric power plants

摘要

In the latest network systems for hydroelectric power plants, data are shared between generating units and equipment by means of LAN systems. The common-use high-level data link control (HDLC) system, and the common CRT control system which can eliminate supervisory and operation panels, are applied mainly to pumped storage power plants. These technologies can realize compact control systems and reduce control cables. In the future, through the application of WAN systems it will be possible to provide detailed operating conditions of plant equipment and detailed data on abnormalities not only to remote control stations but also directly to the manufacturers, so as to save maintenance work and achieve quick restoration. Further, cableless systems will be realized by using electromagnetic waves, light waves, or ultrasonic waves for data transmission between control equipment.