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A gas-electricity interconnection comprehensive energy system unit combination method

A technology of integrated energy system and unit combination, which is applied in the field of gas-electricity interconnected integrated energy system unit combination, and can solve the problems affecting the stability, reliability, gas load uncertainty, wind power and electric load uncertainty of the integrated energy system, etc. question

Active Publication Date: 2020-08-04
NANJING NORMAL UNIVERSITY
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Problems solved by technology

[0004] However, there are many uncertainties in the integrated energy system of gas-electricity interconnection, not only the uncertainty of wind power and electric load, but also the uncertainty of gas load. These uncertain factors will affect the operation of the integrated energy system. stability, reliability

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  • A gas-electricity interconnection comprehensive energy system unit combination method
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  • A gas-electricity interconnection comprehensive energy system unit combination method

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Embodiment Construction

[0069] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0070] Such as figure 1 As shown, the gas-electricity interconnection comprehensive energy system unit combination method designed in the present invention mainly includes constructing multiple scenarios of uncertain factors and determining the gas-electricity interconnection comprehensive energy system unit combination in two parts.

[0071] (1) Constructing multiple scenarios with uncertain factors

[0072] Assuming that the wind power, electric load and gas load conform to the normal distribution, Latin hypercube sampling is adopted, the sampling size is n, the number of random variables in the uncertainty factors is z, and the sample is expressed as X=[x 1 ,.x 2 ,...,x z ], then the i-th sample X i =[x i1 ,.x i2 ,...,.x iz ], i=1,2,...,n.

[0073] In order to reduce the number of scenarios and improve efficiency, the equivalent ...

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Abstract

The invention discloses a gas-electrically-interconnected integrate energy system unit commitment method, comprising construct multiple scenarios of uncertainties and determining two parts of the unitcombination of the gas-electrically-interconnected integrated energy system with electrical interconnection; Considering the uncertainty of electric load and wind power load and the uncertainty of gas load simultaneously, a large number of scenes are generated based on Latin hypercube sampling method, and the number of scenes is obtained by scene reduction. determines that the combination of thegas-electrically interconnected integrated energy system takes the economic optimization as the optimization objective, determines the constraints of electric power network, natural gas network and the coupling relationship between them, establishes the stochastic programming model, and solves to obtain Optimal unit combination in the gas-electrically interconnected integrated energy system. The invention can deal with the uncertainty of gas load, electric load and wind power in the integrated energy system through the random programming method, thereby determining the unit combination and improving the system operation economy.

Description

technical field [0001] The invention belongs to the technical field of electric power information, and in particular relates to a unit combination method of a gas-electric interconnection comprehensive energy system. Background technique [0002] With the shortage of fossil energy and environmental pollution, natural gas is rapidly becoming the best choice for new generating units in the grid. In the gas-electric interconnected comprehensive energy system, the energy comprehensive utilization system unit is the traditional coupling element of the power system and the natural gas system, which can improve the reliability of the system while reducing the investment cost and operation cost of system planning. [0003] The unit combination refers to the ability to reasonably arrange the start and stop states of the units and adjust the output of each unit under the condition of satisfying the operating constraints of the units within the dispatching cycle, so as to achieve the g...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/46
CPCH02J3/46H02J2203/20Y02E10/76
Inventor 包宇庆陈培培周雪婷武媚祝雪妹
Owner NANJING NORMAL UNIVERSITY
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