DU Yansheng Shanxi Electric Power Research Institute. APPLICATIONS OF FUZZY SELF-ADAPTIVE PID ON FEED-WATER CONTROL FOR 660 MW SUPERCRITICAL UNIT[J]. Thermal power generation, 2012, 41(8): 75-78.
DU Yansheng Shanxi Electric Power Research Institute. APPLICATIONS OF FUZZY SELF-ADAPTIVE PID ON FEED-WATER CONTROL FOR 660 MW SUPERCRITICAL UNIT[J]. Thermal power generation, 2012, 41(8): 75-78.DOI:
In order to eliminate the feed-water flow fluctuation caused by mismatch of the output of feed-water pump and that of the hydraulic coupler in feed-water control of the coordinated control system
for a 2×660 MW supercritical unit of the first phase of Xuangang Power Plant
the feed-water control strategy based on fuzzy self-adaptive PID was put forward
that is
building relationships between three regulation parameters namely Kp
Ki and Kd of the PID and the flow deviation e of the feed-water and its varying rate Δe by using fuzzy reasoning
and then adjusting Kp
Ki and Kd according to different e's and Δe's.Results show that
regulation system of the improved feed-water control system has good dynamic
static characteristic and robustness
the feed-water flow is stable.Therefore
the modified system can satisfy the requirement of unit load variation.