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Electricity-gas interconnection system unit combination linear model and system considering electricity-to-gas coupling

A technology of unit combination and linear model, applied in calculation, electrical digital data processing, CAD based on constraints, etc., can solve problems such as accounting, and achieve the effect of improving solution efficiency

Active Publication Date: 2019-04-05
JIANGSU ELECTRIC POWER CO +2
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Problems solved by technology

However, at present, few consider the role of P2G in simplifying the UC problem.

Method used

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  • Electricity-gas interconnection system unit combination linear model and system considering electricity-to-gas coupling
  • Electricity-gas interconnection system unit combination linear model and system considering electricity-to-gas coupling
  • Electricity-gas interconnection system unit combination linear model and system considering electricity-to-gas coupling

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Experimental program
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Embodiment Construction

[0055] The technical process of the invention will be described in detail below in conjunction with the accompanying drawings.

[0056] The invention establishes a unit combination model of the electric-gas interconnection system, considers the safety constraints of the natural gas system and the electric power system, obtains a constraint equation group, and linearizes the nonlinear part to obtain a linear model.

[0057] 1. Establish the objective function of the unit combination model of the electrical-gas interconnection system

[0058] The unit combination model of the electric-gas hybrid system aims at the lowest comprehensive operating cost of the whole system, and the operating cost is the sum of energy consumption cost, power-to-gas conversion cost and unit start-up and stop cost. Among them, the cost of energy consumption includes the consumption cost of generator sets and the cost of natural gas supply at the gas source point. In order to simplify the model, the pres...

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Abstract

The invention relates to an electricity-gas interconnection system unit combination linear model and system considering electricity-to-gas coupling. According to the electricity-gas interconnection system, bidirectional coupling of the electricity-to-gas conversion technology and the gas turbine is considered, the unit combination problem of the gas interconnection system is studied, the lowest comprehensive operation cost of the whole system serves as the target, multiple safety constraints of an electric power system and a natural gas system are considered, and an electricity-gas interconnection system unit combination model is established and linearized to obtain a linear model. Through simulation calculation, the existing nonlinear model and the linear model are compared, the solving efficiency of the nonlinear model and the linear model is compared, meanwhile, the system operation cost and the operation state under the scenes of considering electricity-to-gas and not considering electricity-to-gas and electricity-to-gas are analyzed, and the result shows that the linear model improves the combination solving efficiency of the electricity-gas interconnection system unit, and the application of electricity-to-gas also helps to improve the economical efficiency of the electricity-gas hybrid connection system.

Description

technical field [0001] The invention relates to a combined linear model of electric-gas interconnection system units considering electric-to-gas coupling, and belongs to the field of operation scheduling and control of comprehensive energy systems. Background technique [0002] In recent years, in order to solve problems such as environmental pollution and resource depletion, the Chinese government has made great efforts to adjust the energy structure and change the energy utilization mode, and actively promote the transformation of energy production and consumption patterns under the background of the energy Internet. As an important part of the Energy Internet, the electricity-gas interconnected integrated energy system (IES) is a multi-energy coupling body that takes electricity as the main body and integrates various forms of energy such as natural gas. It helps to promote the integrated consumption of renewable energy and improve the efficiency of comprehensive energy u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F2111/04G06F30/367Y02E60/00
Inventor 马洲俊张明张勇臧海祥王文学郑玉平孙国强许洪华陈逸如马迪洪露
Owner JIANGSU ELECTRIC POWER CO
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