Online real-time optimization method and device for steam power system

Abstract

The invention discloses an online real-time optimization method and device for a steam power system, which solves the deficiencies of the prior art. The method includes the following steps: Step 1: Collect equipment operation data, environmental data, price data and assay analysis data and store them in real time. Database, perform data preprocessing and steady-state detection, and obtain the data set of the steam power system; step 2, perform Gaussian transformation on the data set of the steam power system; step 3, establish the steam power system with the minimum operating cost of the steam power system as the objective function The optimization model is to optimize and solve the objective function within the range of constraints; step 4, to judge the steady state of the system, if the system is in a steady state, write the optimization result of step 3 into the real-time database, and use it as the controlled variable of boiler APC and steam turbine DEH Deviation compensation of the setpoint, the process state is adjusted to the optimum 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 of a steam power system. Background technique [0002] Combined heat and power supply heat with steam that has done work to realize the cascade utilization of steam and improve energy efficiency. At the same time, the boiler flue gas is treated, and the pollutant emission is extremely small, which reduces environmental pollution. Therefore, cogeneration has been widely developed and made great progress. [0003] As a type of cogeneration, 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. Processes such as heat, mechanical drive, power generation, stripping, heating and purging. According to statistics, in a typical refining and chemical enterprise, the ene...

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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

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