Steam power system optimizing method based on marginal cost accounting

Abstract

The invention discloses a steam power system optimizing method based on marginal cost accounting which relates to the steam power system optimizing and modifying technology field. The method, through the acquisition of relevant data of the steam producing equipment and the dynamic and electric equipment of the steam power system, combines these data to calculate the steam producing load of the steam producing equipment as well as the viable cost and marginal cost corresponding to the power generation loads of the dynamic and electric equipment and compares the marginal cost with the external purchase cost so as to determine the steam producing amount, the power generation amount and the externally purchased steam amount and power amount of the steam power system. In view of the characteristics of the steam power system, the invention proposes a steam power optimizing system based on the analysis on the marginal cost while ensuring the demand of steam use and fulfilling the constraint conditions faced in the practical operation of the steam power system, including security, stability, economy and equipment characteristics. The method can be used to evaluate the actual operation cost and to give operational suggestions so as to optimize the operation load of the steam power system, to achieve the best economic gains and to reduce producing costs for enterprises.

Description

technical field [0001] The invention relates to the technical field of steam power system transformation optimization, in particular to a steam power system optimization method based on marginal cost accounting. Background technique [0002] As an energy-intensive petrochemical industry, it has always been known for its high energy consumption. With the increasingly tense relationship between supply and demand of energy resources, energy prices continue to rise. Sex is getting more and more important. In large-scale chemical or petrochemical installations, the steam power system has become an important part. All processes require the continuous supply of public works such as steam and electricity, and the provision of these public works requires a lot of investment and operating costs. Therefore, even Small improvements in operation can yield substantial economic benefits. [0003] Typical features of current steam power systems are: [0004] 1. The load of boilers and tu...

AI Technical Summary

Problems solved by technology

[0004] 1. The load of boilers and turbines basically depends on experience, which can meet the production needs. It is difficult to ensure the economical indicators if the operation is adjusted only by experience, and it is easy to cause high operating costs of the system.

[0005] 2. Changes in multiple working conditions (seasonal changes, fuel price changes, electricity price changes, processing load changes), these changes in working conditions are interconnected and affect each other, making the operation complicated

Blind purchase or complete self-production may cause uneconomical, so the steam system needs to be optimized

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