China Guodian Corporation Bulian Power Plant, Inner Mongolia
Two 660MW ultra-supercritical units, 2017-03;
Project Scope: (1) AGC coordinated control; (2) Main steam temperature control; (3) De-NOx (SCR) control;
Results: (1) Kp increased from 1.5 to 3.5; grid assessment net income ranking improved from 23/47 to 2/47; (2) Main steam temperature fluctuation reduced by 50%; (3) SCR outlet NOx fluctuation reduced by 50%; (4) First-year grid incentive exceeded RMB 40 million.
Case 2
China Energy INVESTMENT Zhoushan Power Plant
Two 300MW subcritical units with SCR De-NOx, 2017–2018;
Results: (1) SCR outlet NOx standard deviation reduced by over 40%; (2) Ammonia consumption saved by over 10%.
Case 3
Jingneng Jingning Power Plant
350MW supercritical unit, Jun 2019;
Project Scope: (1) AGC coordinated control; (2) Main steam temperature control;
Results: Significant improvement in steam pressure and temperature control quality; Kp value increased.
Case 4
China Resources Nanjing Chemical Industrial Park Cogeneration Plant
300MW subcritical unit, 2019-12;
Results: (1) Load ramp rate increased from 1.5%/min to 2.3%/min; (2) Steam pressure fluctuation reduced by over 50%; (3) Main steam temperature fluctuation reduced by 40%; (4) Reheat steam temperature fluctuation reduced by 60%.
Case 5
Guohua Suizhong Power Plant
Two 880 MW supercritical units with SCR De-NOx, 2020-6 & 2020-10;
Results: (1) SCR outlet NOx fluctuation reduced by over 40%; (2) Ammonia solution consumption saved by over 10%.
Case 6
Guohua Zhungeer Power Plant
300 MW subcritical unit, 2020-07;
Results: (1) Kp increased from 1.2 to above 3.0; (2) Steam temperature fluctuation reduced by 40%; (3) Average steam temperature increased by 3–4°C.
Case 7
Zhejiang Energy Taizhou Power Plant
300MW subcritical unit, 2021-04;
Results: Load ramp rate improved from under 1 MW/min to 8 MW/min (mid-to-low load) and 5.8 MW/min (high load).
Case 8
Huadian Jiangling Power Plant
660 MW ultra-supercritical unit, 2021-05;
Results: (1) NOx fluctuation reduced by 70% (Side A) and 84% (Side B); (2) Outlet NOx fluctuation reduced by 52%; (3) Ammonia solution consumptio reduced by 7.1%.
Case 9
Jingneng Shengle Power Plant
Two 350MW supercritical units, 2022-06
Results: (1) Kp increased from 1.2 to 4.0; (2) Significant reduction in load, steam pressure, and intermediate-point temperature fluctuations; (3) Deep load turndown capability extended to 25%; (4) Main/reheat steam temperature fluctuation reduced by 38% and 52%; (5) Average main steam temperature increased by 3.8°C; (6) Average reheat steam temperature increased by 1.4°C and 4.4°C (two sides).
Case 10
Guohua Hulunbuir Power Plant
Two 600MW units, 2022-2023;
Results: (1) SCR outlet NOx fluctuation reduced by 40%; (2) Ammonia injection reduced by 5–10%.
Case 11
Huaneng Jingmen Thermal Power Plant, Hubei
350MW supercritical unit, 2023-04;
Results: (1) Load ramp rate increased from 1.5% to 2.5%; (2) Deep load turndown to 25%; (3) Steam temperature fluctuation reduced by 30–40%; (4) De-NOx outlet NOx fluctuation reduced by over 60%; (5) Ammonia solution usage reduced by 20%.
Case 12
Zheneng Liuheng Power Plant
1030MW ultra-supercritical unit, 2023-04;
Results: (1) Load ramp rate increased from 0.8% to 1.5%; (2) Deep load turndown to 40%; (3) Main/reheat steam temperature fluctuation reduced by 40–50%; (4) Average main/reheat steam temperature increased by 2.0°C and 3.5°C.
