A plant-level AGC load optimization logic control method and system
A technology of logic control and load optimization, applied in the direction of single-grid parallel feeding arrangement, etc., can solve the problems such as the inability to obtain the complete information of the power plant units in real time, the difficulty of taking into account the economy, and the rising cost of power grid dispatching.
Active Publication Date: 2021-06-15
华能(广东)能源开发有限公司海门电厂
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However, there is only a stand-alone AGC mode. For power plants, it is difficult to take into account the economics of the entire plant operation.
The dispatching of the first one does not know much about the energy consumption characteristics of the units of each power generation enterprise, so it is difficult to realize the optimal load distribution of each unit within the power plant; The state avoids the critical load (such as starting and stopping the coal mill, etc.); among the three, frequent adjustments of multiple units often occur, which affects the stability of the system, aggravates the wear and tear of the main and auxiliary machines, and shortens the life of the unit. rising cost of
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[0031] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0032] see figure 1 A plant-level AGC load optimization logic control method is described. The logic control method includes the following steps: 1) First, set the switch K5 on the DCS side of the unit to control the input and exit of the AGC command on the DCS side of the unit. The unit operator manually switches on and off on the DCS. When the switch point of the switch K5 switches to the AGC exit state, the unit does not accept any AGC command control, and the load distribution is given manually by the unit operator on the DCS, which is determined by the unit. In the case of a single unit, the ...
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The invention discloses a factory-level AGC load optimization logic control method and system. The logic control method includes the following steps: setting a switch K5 on the DCS side of the unit to control the input and exit of the AGC command on the DCS side of the unit, and the operation personnel of the unit Switching on and off manually on the DCS; set the switches K4~K1 in the plant-level AGC system to respectively control the four AGC modes: single machine AGC mode, unit manual or AGC mode, plant-level AGC local mode, and plant-level AGC remote mode Switching; when the current real-time load of the power plant can be correctly tracked and obtained, switch the switch K1 to dispatch control and enter the plant-level AGC remote mode. The total load command of the whole plant is given by the EMS system, and the selected optimal distribution algorithm is in accordance with the specified constraints. , automatically calculate the load command of each unit. The real-time load of the units controlled by the plant-level AGC is obtained, and the EMS system issues the active power command of the whole plant, and flexibly allocates the load of the units according to the selected optimal distribution algorithm, and finally realizes the economically optimal distribution of loads among units.
Description
technical field [0001] The invention relates to the technical field of plant-level automatic generation control (AGC) load optimization technology in thermal power plants, in particular to a plant-level AGC load optimization logic control method and system. Background technique [0002] At present, all major regional power grids in China have established and put into automatic generation control system (AGC for short). Under this mode, the active power of each unit in the power plant is directly controlled by the master station of the power dispatching center. The power industry calls this control mode single-machine AGC. At present, most of the grid's dispatching of thermal power plant units only adopts this mode. However, there is only a stand-alone AGC mode for power plants, but it is difficult to take into account the economics of the whole plant operation. The dispatching of the first one does not know much about the energy consumption characteristics of the units of e...
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IPC IPC(8): H02J3/46
CPCH02J3/46
Inventor白玉峰孙伟鹏杨略林楚伟蔡纯刘佳杰徐浩渊卢叙钿江永黄应朝朱晨亮尤亮杨天意
Owner华能(广东)能源开发有限公司海门电厂