—Takehara Thermal Power Plant No.3 Unit of Thermal Power Department of Electric Power Development Co., Ltd.—
| Satoru Shimizu | Power Plant Control Systems Engineering Dept., Information & Control Systems Div., Information & Telecommunication Systems, |
| Koichi Muramatsu | Operating Plant Gr., Thermal Power Business Dept., Thermal Power Systems Development & Management Div., Thermal Power System Div., Power Systems, |
| Shusaku Onuki | Power Plant Control System Service Department, |
In the event of upgrading the supervisory and control systems in a thermal power plant, the biggest challenge is to complete the work during the predetermined inspection period. Meanwhile, in the particular case of such systems for large-capacity, coal-fired power plants, prominent advances in control technology in terms of software and hardware have occurred simultaneously. In consequence, introducing the latest system technology and control technology during upgrading—that is, not just straightforward parts-exchange—is extremely effective in terms of streamlining systems, improving reliability and operability, and lightening loads on operators. In the present study, upgrading of the supervisory and control systems of Takehara Thermal Power Plant No. 3 Unit of the Thermal Power Department of the Electric Power Development Co., Ltd. is taken as an example. In this example, phased upgrading utilizing the special features of the HIACS-7000 (Hitachi Integrated Autonomic Control System 7000) control system to the full. As a result, the upgrading work was completed during the predetermined inspection period and, on top of that, an upgrading plan that realizes the above-mentioned effects was laid out and implemented.
control systems, thermal power plant, DCS, HIACS
