System and method for intelligent boiler combustion stability determination suitable for large-scale power station
A boiler combustion, intelligent technology, applied in general control system, control/regulation system, electrical program control, etc., can solve the problems of flame image processing and mathematical analysis error, difficult combustion stability, uncertainty and error, etc. Achieve the effect of less overall investment, simple system structure and less maintenance work
A boiler combustion, intelligent technology, applied in general control system, control/regulation system, electrical program control, etc., can solve the problems of flame image processing and mathematical analysis error, difficult combustion stability, uncertainty and error, etc. Achieve the effect of less overall investment, simple system structure and less maintenance work
CN108445845AActive Publication Date: 2018-08-24ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +2
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Embodiment 1
[0108] Boiler #4 of a power plant of Huaneng Group is a subcritical, intermediate reheating, forced circulation drum boiler with an evaporation capacity of 1025t / h. The air nozzles are arranged at intervals, and the pulverizing system is a direct blowing type equipped with 6 medium-speed coal mills. At present, the power system is facing insufficient peak-shaving capacity, and the contradiction of large peak-to-valley difference has become increasingly prominent. Relevant national departments have also issued corresponding policies to encourage thermal power units to carry out deep peak-shaving to alleviate this contradiction. In order to adapt to the new power form , and actively participate in deep peak regulation. In order to avoid the problem of unstable combustion and even fire extinguishing of the boiler due to the difficulty in accurately judging the combustion stability of the unit during the deep peak regulation of parameters, the power plant adopted an intelligent boile...
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The present invention discloses a system and a method for intelligent boiler combustion stability determination suitable for a large-scale power station. A data collection module is configured to collect coal quality component data from an MIS (Management Information System), collect boiler operation state data from a DCS (Distribute Control System), and transmit the coal quality component data and the boiler operation state data to a data processing module; the data processing module is configured to determine whether received parameters are in corresponding preset threshold ranges or not, reject the data exceeding the corresponding preset threshold ranges, calculate a characteristic quantity according to the data in the corresponding preset threshold ranges and transmit a determination result and the characteristic quantity to a data decision module; and the data decision module is configured to calculate a dimensionless combustion stability analysis criterion in an actual operationstate according to the received characteristic quantity, compare the dimensionless combustion stability analysis criterion in the actual operation state with a set dimensionless combustion stability analysis criterion critical value, and determine whether the boiler combustion is stable or not. The system and the method for intelligent boiler combustion stability determination perform determination of the combustion stabilization condition of the boiler in real time according to the boiler operation state, and are suitable for determination of a low-load combustion stabilization condition.
Description
technical field [0001] The invention belongs to the technical field of power station boilers, and in particular relates to an intelligent boiler combustion stability judging system and method suitable for large-scale power stations. Background technique [0002] At present, my country's power industry certification is showing a new situation. The capacity of the power grid is continuously increasing. The UHV power grid is gradually being built and the proportion of new energy is rapidly increasing. The pressure on the power grid to accommodate renewable energy and external power transmission has increased significantly; In addition, the structure of electricity consumption has also undergone significant changes—the proportion of residential electricity consumption has increased and the proportion of industrial electricity consumption has decreased, making the peak-to-valley load difference of the power grid show a trend of increasing. As a result, the power system is facing i...
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Patent Timeline
24 Aug 2018
Publication
CN108445845A
- IPC
- G05B19/418
- CPC
- G05B19/41845; G05B2219/33273; Y02P90/02
- Inventors
- 董信光; 孙键