Joint optimized scheduling method for multiple types of generating sets of self-supply power plant of iron and steel enterprise

Abstract

The invention discloses a joint optimized scheduling method for multiple types of generating sets of a self-supply power plant of an iron and steel enterprise, and belongs to the technical field of energy optimized scheduling of the iron and steel enterprise. Influence of fuel types and gas mixed burning amount on energy consumption of the sets is taken into consideration in construction of a set energy consumption characteristic model, fitting is performed under different gas mixed burning, and the accuracy and representativeness of the model are improved; and influence of the fuel cost, time-of-use power price and surplus gas dynamic change on the generating cost is considered comprehensively in construction of an optimized scheduling model, meanwhile, various constraint conditions including power balance constraint, generating set self-running constraint, purchased power quantity constraint, gas supply constraint, variable load rate limit and the like are considered, and the performability of a generation schedule is guaranteed. Optimization solution is performed on the models by adopting the adaptive particle swarm optimization algorithm, the problems of high dimensionality, nonconvexity, nonlinearity and multiple constraints of the power generation scheduling of the self-supply power plant can be well solved, power production optimization and purchasing rationalization are realized, surplus gas is sufficiently used, and the power supply cost is reduced to the greatest extent.

Description

technical field [0001] The invention belongs to the technical field of energy optimization dispatching in iron and steel enterprises, and in particular provides a method for joint optimization dispatching of multi-type generating sets in self-provided power plants of iron and steel enterprises. Background technique [0002] Large and medium-sized iron and steel enterprises in my country generally have self-provided power plants, as the main buffer users of the gas system of iron and steel enterprises to adjust and absorb surplus gas, and provide electricity for enterprises, which reduces the cost of electricity consumption, and has advantages in energy saving, environmental protection, and improvement of economic benefits. played a good role. Making full use of the existing power generation capacity of the self-provided power plant for the production and use of electricity can not only reduce the dependence on the power of the external power grid, but also reduce the cost of ...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for joint optimal dispatching of multiple types of generating sets in self-provided power plants of iron and steel enterprises, to solve the problem of power failure caused by dispatchers mainly relying on experience to optimize dispatching of multiple different types of generating sets in the prior art. The method of high energy consumption and high cost of production ensures that the influence of factors such as fuel ratio, on-grid electricity price, and grid electricity price on power generation costs is ensured under the conditions of meeting the production power load demand, unit output capacity, and fuel consumption limit. , rationally arrange the active power output, gas distribution and outsourced power transmission plan of each unit of the self-provided power plant in a dispatch cycle in the future, so as to minimize the power supply cost of the whole plant

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