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
Abstract: The present invention belongs to the flue gas desulfuration field. Specifically, the present invention relates to a supported solid-phase catalyst for oxidizing the by-product magnesium sulfite in a magnesium desulfuration process, and to preparation method and use thereof. The catalyst uses an activated carbon particle as a support, and cobalt nitrate, manganese nitrate, copper nitrate and ferrous nitrate as catalytically active components. The preparation method is as follows: mixing the pre-treated activated carbon support with the catalytically active components, followed by oscillating, standing under microwave irradiation, filtrating, drying, baking, so as to obtain the supported solid-phase catalyst.
Type:
Grant
Filed:
August 12, 2015
Date of Patent:
October 8, 2019
Assignee:
North China Electric Power University Baoding
Abstract: The present invention belongs to the flue gas desulfuration field. Specifically, the present invention relates to a supported solid-phase catalyst for oxidizing the by-product magnesium sulfite in a magnesium desulfuration process, and to preparation method and use thereof. The catalyst uses an activated carbon particle as a support, and cobalt nitrate, manganese nitrate, copper nitrate and ferrous nitrate as catalytically active components. The preparation method is as follows: mixing the pre-treated activated carbon support with the catalytically active components, followed by oscillating, standing under microwave irradiation, filtrating, drying, baking, so as to obtain the supported solid-phase catalyst.
Type:
Application
Filed:
August 12, 2015
Publication date:
February 1, 2018
Applicant:
North China Electric Power University Baoding
Abstract: A renewable energy-based hybrid bi-directionally interactive DC traction power supply system includes two traction substations. Each substation includes transformers, rectifiers, bidirectional AC-DC converters, a DC bus, a catenary, a steel rail and a section post. A DC bus between two adjacent traction substations is provided with a DC renewable energy system constructed by an electric vehicle charging-discharging system, a distributed generation and more than one low voltage DC microgrid. The DC renewable energy system is connected to the DC bus between two adjacent traction substations through a high voltage DC bus, thus a DC circular microgrid being formed in a power supply section post. The electric vehicle charging-discharging system is formed by more than one bidirectional DC-DC charging-discharging equipments which are intended for in connection with the power batteries of the electric vehicle.
Type:
Application
Filed:
July 26, 2014
Publication date:
June 9, 2016
Applicants:
STATE GRID CORPORATION OF CHINA, NORTH CHINA ELECTRIC POWER UNIVERSITY (BAODING), STATE GRID LIAONING ELECTRIC POWER COMPANY LIMITED ECONOMIC RESEARCH INSTITUTE
Inventors:
Ming MENG, Jian LIU, Xiping WANG, Dalong HU, Li JIANG, Yingwei SONG, Yan LIU, Liaoyi NING