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Power to gas device-considered power-gas interconnection system reliability modeling method and assessment method thereof

A technology of interconnected systems and modeling methods, applied in the direction of electrical digital data processing, data processing applications, instruments, etc., can solve the problem of not considering the operating characteristics of P2G devices, not considering the reduction of heat load of gas cogeneration units, and lack of equipment level Reliability indicators and other issues

Inactive Publication Date: 2017-09-22
CHONGQING UNIV
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Problems solved by technology

[0004] The existing reliability assessment has the following problems: first, it ignores the phenomenon of "wind curtailment" in the actual system; second, it does not consider the actual operating characteristics of the P2G device; third, it does not consider the heat load reduction of the gas cogeneration unit The fourth is the lack of equipment-level reliability indicators

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  • Power to gas device-considered power-gas interconnection system reliability modeling method and assessment method thereof

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Embodiment Construction

[0111] The present invention will be further described below in conjunction with the examples, but it should not be understood that the scope of the subject of the present invention is limited to the following examples. Without departing from the above-mentioned technical ideas of the present invention, various replacements and changes made according to common technical knowledge and conventional means in this field shall be included in the protection scope of the present invention.

[0112] (1) Input basic data

[0113] The IEEE14-NGS10 electrical-gas interconnection system consists of two parts: the IEEE14 node power system and the NGS10 node natural gas system. The basic data of the power system can be found in the IEEE14 node standard system. In order to make load shedding possible in the system state, the electric load level is increased to 1.58 times the base load. The basic data of the natural gas system can be found in the NGS10 node data in literature [1]. In this e...

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Abstract

Aiming at the deficiencies of energy flow models, load cut-down models and reliability assessment indexes of the existing power-gas interconnection system reliability assessment, the invention discloses a power to gas (P2G) device-considered power-gas interconnection system reliability modeling method and an assessment method thereof. The method comprises the following steps of in an energy flow model, importing a wind power plant abandoned air volume, and consumed electric power and injected air volume in a P2G device model into an electric power system active balance model; adding a heat load cut-down amount and an abandoned air volume variable in a target function of an optimization model in the load cut-down model; and in a reliability assessment index, establishing a device-level index, for system reliability index contribution, of a P2G device.

Description

technical field [0001] The invention belongs to the field of comprehensive energy systems, and aims to realize the reliability evaluation of the electricity-gas interconnection system, and specifically relates to an energy flow model based on a power-to-gas device and a gas-fired unit, an electricity / gas / heat load reduction optimization model considering the abandonment of wind power, and an electricity-gas interconnection system. - Contents of the gas interconnection system reliability evaluation index. Background technique [0002] In recent years, with the continuous improvement of the installed capacity of gas-to-electricity and the maturity of power-to-gas (P2G) technology, the coupling relationship between power and natural gas systems has deepened. The introduction of P2G devices not only realizes the two-way flow of energy between electrical and gas subsystems, but also provides a new solution for the storage and transportation of large amounts of wind power. Therefo...

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Application Information

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IPC IPC(8): G06F17/50G06Q50/06
CPCG06F30/20G06Q50/06
Inventor 余娟马梦楠郭林赵霞颜伟
Owner CHONGQING UNIV
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