Real-time optimization method for process industrial process

Abstract

The embodiment of the invention provides a real-time optimization method for a process industrial process. The real-time optimization method comprises the following steps: carrying out data validity detection and steady-state detection on a real-time working condition; searching a historical optimization working condition in a historical working condition library to obtain a matching working condition as a reference optimization working condition; performing deviation compensation on the reference optimization working condition by adopting a deviation compensation algorithm; and after deviation compensation, carrying out validity detection on the optimization result, and transmitting the optimization result to the APC in the form of an external target value for control if the validity detection is passed; adopting work condition matching driving, determining a final optimization result of a decision variable in combination with an optimization decision deviation correction algorithm. Online access operation of the mechanism model is not involved in the online real-time operation process; and the optimization scheme of the working condition matching is feasible through actual production verification in history, so that the problem of model calculation convergence cannot occur in the online operation process, the optimization result is real under the condition that the working condition matching is successful, and the long-term operation of the RTO system is ensured.

Description

technical field [0001] The invention belongs to the field of process control, in particular to a real-time optimization method for flow industry processes. Background technique [0002] With the help of Advanced Process Control (APC), the device can be well controlled to operate near the artificially given set value, so as to achieve the purpose of controlling the device at the specified operating point. However, how to reasonably determine the operating point of the device based on the current device working condition, raw material status and other information requires the operator's rich operating experience combined with a reliable grasp of the device performance, and at the same time make a good balance between the devices in the entire process Balance and judge comprehensively. [0003] Real-time optimization (Real Time Optimization, RTO), mainly based on the process steady-state accurate mechanism model, adopts a nonlinear optimization algorithm based on a strict mech...

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Problems solved by technology

[0005] In order to solve the shortcomings and deficiencies in the prior art, the present invention proposes a real-time optimization method for process industry processes, based on the device optimization working condition library, introducing historical optimization working conditions, and does not need to run the mechanism model online all the time, avoiding the The online calculation of the traditional RTO system is difficult to converge

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