Online real-time optimization method and device for steam power system
A technology of steam power system and optimization method, which is applied in the direction of general control system, control/regulation system, information technology support system, etc., and can solve problems such as cost increase, unsuitable operation rules, and mismatch between model and actual state
Active Publication Date: 2021-05-11
ZHEJIANG SUPCON TECH +1
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Problems solved by technology
The wear of circulating fluidized bed boilers seriously affects its economical, efficient and stable operation. The degree of wear increases with the increase of load, and the maintenance period is shortened, resulting in increased costs.
The steam power system has a great time-varying nature, and the offline model cannot adapt to changes with the change of working conditions, resulting in a mismatch between the model and the actual state
The operation optimization plan needs to consider the additional time cost and start-stop cost caused by the start-up and stop-off of boilers and steam turbines, which increases the work intensity of operators, does not adapt to the actual operation rules on site, and is difficult for operators and dispatchers to implement
Method used
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Embodiment
[0057] Embodiment: a kind of online real-time optimization device of steam power system, such as figure 1 As shown, it includes: data acquisition and processing module 1, which is used to collect equipment operation data, environmental data, price data and laboratory analysis data of the steam power system, and perform preprocessing and steady-state detection on the equipment operation data to obtain high-quality data sets ;
[0058] The equipment model module 2 is used to perform Gaussian transformation on the data set to obtain a normally distributed data set. Then use the Gaussian mixture clustering algorithm to cluster the data, and use the multiple linear regression model to establish the steam power system equipment model in each cluster;
[0059] The optimization solution module 3 is used to establish an optimization model of the steam power system with the lowest operating cost of the steam power system as the objective function, optimize and solve the objective funct...
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The invention discloses an online real-time optimization method and device for a steam power system, and solves the defects in the prior art, and the method comprises the following steps: 1, collecting equipment operation data, environment data, price data and test analysis data, storing the data in a real-time database, carrying out the data preprocessing and steady-state detection and obtaining a data set of the steam power system; 2, performing Gaussian transformation on the data set of the steam power system; 3, establishing a steam power system optimization model by taking the lowest operation cost of the steam power system as a target function, and performing optimization solution on the target function within a constraint condition range; and 4, carrying out system steady state judgment, if the system is in a steady state, writing an optimization result in the step 3 into a real-time database, taking the optimization result as deviation compensation of controlled variable set values of the boiler APC and the steam turbine DEH, and adjusting a process state to enable the process state to reach an optimized value.
Description
technical field [0001] The invention relates to the field of steam power system operation optimization, in particular to an online real-time optimization method and device for a steam power system. Background technique [0002] Combined heat and power will heat the steam that has done work, realize the cascade utilization of steam, and improve energy efficiency. At the same time, the boiler flue gas has been treated, and the pollutant discharge is extremely small, which reduces environmental pollution. Therefore, combined heat and power has been extensively developed and made great progress. [0003] As a type of combined heat and power generation, the steam power system is the cornerstone of safe, stable, long-term, full-load and efficient operation of self-owned power plants in refining, chemical, steel, thermal power and papermaking enterprises. It is mainly used for heat exchange, Processes such as heat, mechanical drive, power generation, stripping, heating and purgin...
Claims
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Patent Timeline
Login to View More IPC IPC(8): G05B19/418
CPCG05B19/41875G05B2219/32368Y02P90/02
Inventor 杨义磊王宽心郭廉洁李达韩文巧吴玉成
Owner ZHEJIANG SUPCON TECH