Abstract: A flexible coordinated control method adapted to a thermal power unit in a deep peak-regulating operation includes: adding a reverse compensation channel from a fuel quantity instruction to a power generation load instruction on a basis of a traditional coordinated control system of a boiler-following mode; meanwhile, constructing a flexible factor by using a main steam flow quantity signal, and correcting a gain of the reverse compensation channel by the flexible factor in a product mode to obtain a reverse power generation load instruction bias value; and correcting the power generation load instruction of the unit by using the reverse power generation load instruction bias value, so as to give priority to guaranteeing the control quality of a power generation load and a throttle pressure before a steam turbine under conventional load conditions and give priority to guaranteeing the combustion stability under deep peak-regulating conditions.
Type:
Grant
Filed:
November 20, 2020
Date of Patent:
May 17, 2022
Assignees:
NORTH CHINA ELECTRIC POWER UNIVERSITY(BAODING), STATE GRID LIAONING ELECTRIC POWER CO., LTD.
Inventors:
Liang Tian, Xinping Liu, Bo Hu, Tuoyu Deng, Zhimin Guan, Guiping Zhou, Shunjiang Wang, Lei Wang
Abstract: A flexible coordinated control method adapted to a thermal power unit in a deep peak-regulating operation includes: adding a reverse compensation channel from a fuel quantity instruction to a power generation load instruction on a basis of a traditional coordinated control system of a boiler-following mode; meanwhile, constructing a flexible factor by using a main steam flow quantity signal, and correcting a gain of the reverse compensation channel by the flexible factor in a product mode to obtain a reverse power generation load instruction bias value; and correcting the power generation load instruction of the unit by using the reverse power generation load instruction bias value, so as to give priority to guaranteeing the control quality of a power generation load and a throttle pressure before a steam turbine under conventional load conditions and give priority to guaranteeing the combustion stability under deep peak-regulating conditions.
Type:
Application
Filed:
November 20, 2020
Publication date:
May 12, 2022
Applicants:
NORTH CHINA ELECTRIC POWER UNIVERSITY(BAODING), STATE GRID LIAONING ELECTRIC POWER CO., LTD.
Inventors:
Liang TIAN, Xinping LIU, Bo HU, Tuoyu DENG, Zhimin GUAN, Guiping ZHOU, Shunjiang WANG, Lei WANG