To ensure the safe

efficient and long-term operation of the first test platform for key components in 700 ℃ ultra supercritical power units

the control system for this key components test platform was designed

combining with the characteristics of Hitachi DCS.By analyzing the problems occurred during the process of project configuration and debugging

the system function was improved and the control strategy was established in effect.After the cold state debugging and hot state debugging

the overshoot of this control system is controlled within 0.5%

the response time is 60 s

and the heating rate is 2~3 ℃/min

indicating the temperature control effect at the superheater specimen outlet is good.At present

this test platform has successfully taken the 168 hcommissioning

and the whole system runs stably

the stability and adjustability of the control system is good

the automatic commissioning rate can reach up to 100%

and the interlocking operation rate can reach up to 100%.