Coal fired generator set desulfurization real time on-line monitoring system power substation monitoring method
A technology for generator sets and monitoring systems, applied in the testing of machines/structural components, measuring devices, instruments, etc., can solve problems such as high operating costs and maintenance difficulties, unsatisfactory operating conditions of desulfurization facilities, and complex operation of desulfurization facilities and equipment. Achieve significant economic and social benefits
Active Publication Date: 2008-09-10
TSINGHUA UNIV +1
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Problems solved by technology
In order to meet the requirements of environmental protection and reduce sulfur dioxide emissions, my country's large and medium-sized coal-fired generating units have installed expensive flue gas desulfurization facilities in the flue; Actual operating conditions are not ideal
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[0057] The present invention collects key data of a plurality of desulfurization facilities, introduces a new desulfurization monitoring method into the power system, and proposes a real-time on-line desulfurization monitoring sub-station monitoring method for coal-fired generating units (such as figure 1 shown), and can be automatically monitored by computer.
[0058] This invention comprises the following steps (flow process sees figure 2 ):
[0059] Step 1: In the offline state, set the sampling interval T of the desulfurization real-time online monitoring system of coal-fired generating units 采样 ;
[0060] Step 2: Given the real-time measurement values of the three-phase current, three-phase voltage and active power of the booster fan of the desulfurization system of the coal-fired generating set; the real-time measurement value of the flue gas flow at the outlet of the booster fan; The measured value of the sum of the secondary supply air flow; the measured value of...
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The invention discloses a monitoring method of a power plant sub-station in a coal-fired generating set desulfurization real-time online monitoring system, belongs to the technical field of automatic control on electrical power systems, and is characterized in that after a kth sampling interval, a plurality of key data concerning desulphurization devices such as the raw flue gas sulfur content and the purified flue gas sulfur content of the coal-fired generating set, etc., are collected; meanwhile, data concerning a plurality of pieces of key equipment such as the power of a booster fan, the running state of a slurry pump and the running state of a bypass baffle door, etc., are also collected, therefore, the actual running state of the desulphurization device can be mastered more accurately; moreover, the monitoring method of a power plant sub-station in a coal-fired generating set desulfurization real-time online monitoring system of the invention calculates the actual flue gas rate of the generating set through an algorithm when being desulfurized by the desulphurization device; meanwhile, by combing with other relevant parameters such as the running state of the bypass baffle door and the running state of the booster fan, etc., the real daily commissioning rate of the desulphurization device and the commissioning state of the desulphurization device can be calculated. The monitoring method of a power plant sub-station in a coal-fired generating set desulfurization real-time online monitoring system can be applied to the coal-fired generating set desulfurization real-time online monitoring systems in various areas and provincial grids of China to improve the reliability and effectiveness of monitoring.
Description
technical field [0001] The technical invention belongs to a power plant substation monitoring method of a real-time on-line monitoring system for desulfurization of a coal-fired generating set in a provincial power grid of a power system and a large regional power grid. Background technique [0002] Sulfur dioxide emission is the main cause of air pollution and acid rain in my country. The flue gas emitted by coal-fired units has become an important source of sulfur dioxide emissions. In order to meet the requirements of environmental protection and reduce sulfur dioxide emissions, my country's large and medium-sized coal-fired generating units have installed expensive flue gas desulfurization facilities in the flue; Actual performance is not ideal. In view of the actual status of the current desulfurization facilities, the National Development and Reform Commission and the State Environmental Protection Administration have issued the "Coal-fired Power Generation Unit Desul...
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Login to View More IPC IPC(8): G01M19/00G01M99/00
Inventor 徐飞胡伟闵勇张景生杨泓王小海侯佑华朱长胜蒿峰
Owner TSINGHUA UNIV