US 12,241,378 B2
Gas turbine overspeed protection method and apparatus, electronic device and storage medium
Dekun Tian, Shandong (CN); Tao Kou, Shandong (CN); Wanchun Cha, Shandong (CN); Zhijie Liu, Shandong (CN); Xin Li, Shandong (CN); Jianglei Zou, Shandong (CN); Libin Zhou, Shandong (CN); Xu Liu, Shandong (CN); Zhuqing Mao, Shandong (CN); Rikui Zhang, Shandong (CN); Peng Zhang, Shandong (CN); Jianwei Wang, Shandong (CN); Jihua Wang, Shandong (CN); Xiaolei Ji, Shandong (CN); Xincheng Li, Shandong (CN); Yuxuan Sun, Shandong (CN); Yipeng Wu, Shandong (CN); Chunqiang Lan, Shandong (CN); and Liang Lv, Shandong (CN)
Assigned to YANTAI JEREH PETROLEUM EQUIPMENT & TECHNOLOGIES CO., LTD., Yantai (CN)
Filed by YANTAI JEREH PETROLEUM EQUIPMENT & TECHNOLOGIES CO., LTD., Shandong (CN)
Filed on Jul. 17, 2023, as Appl. No. 18/353,342.
Application 18/353,342 is a continuation in part of application No. 18/066,630, filed on Dec. 15, 2022, granted, now 11,739,622.
Application 18/353,342 is a continuation in part of application No. PCT/CN2021/135089, filed on Dec. 2, 2021.
Application 18/066,630 is a continuation of application No. 17/485,014, filed on Sep. 24, 2021, granted, now 11,560,779, issued on Jan. 24, 2023.
Application 17/485,014 is a continuation in part of application No. 17/172,819, filed on Feb. 10, 2021, granted, now 11,143,006, issued on Oct. 12, 2021.
Claims priority of application No. 202110101567.8 (CN), filed on Jan. 26, 2021; application No. 202110608526.8 (CN), filed on Jun. 1, 2021; and application No. 202111363408.1 (CN), filed on Nov. 17, 2021.
Prior Publication US 2023/0358127 A1, Nov. 9, 2023
Int. Cl. F01D 21/02 (2006.01); F01D 15/08 (2006.01); F01D 15/12 (2006.01); F01D 17/06 (2006.01); F01D 17/10 (2006.01); F01D 19/00 (2006.01); F01D 21/00 (2006.01); F04B 17/05 (2006.01); F04B 49/02 (2006.01); F04B 49/06 (2006.01); E21B 43/26 (2006.01)
CPC F01D 21/02 (2013.01) [F01D 15/08 (2013.01); F01D 15/12 (2013.01); F01D 17/06 (2013.01); F01D 17/105 (2013.01); F01D 19/00 (2013.01); F01D 21/003 (2013.01); F01D 21/006 (2013.01); F04B 17/05 (2013.01); F04B 49/02 (2013.01); F04B 49/065 (2013.01); E21B 43/2607 (2020.05)] 19 Claims
OG exemplary drawing
 
1. A gas turbine overspeed protection method, comprising:
acquiring a power utilization load of a generator collected by a first sensor, and a rotating speed value, monitored by a second sensor, of a gas turbine;
judging whether the power utilization load suddenly decreases or disappears, and in response to determining that the power utilization load suddenly decreases or disappears, controlling, by a controller, an excitation current in an eddy current retarder to provide a braking torque for the generator that simulates the power utilization load;
judging whether the rotating speed value exceeds a set speed range, and in response to determining that the rotating speed value exceeds the set speed range, controlling, by the controller, the gas turbine to reduce fuel supply, and opening a discharge valve of a gas compressor to discharge a high-pressure gas to reduce a power output and the rotating speed of the gas turbine; and
controlling, by the controller, the braking torque provided by the eddy current retarder to compensate for hysteresis of reducing fuel supply and opening the discharge valve in controlling a rotational speed of the gas turbine.