A Construction Method of Integrated Load Shedding Model of Electric-Gas Interconnected System Considering Wind Power Abandonment

A technology of integrated load and interconnected system, applied in the direction of load forecasting in AC network, integration of power network operating system, pipeline system, etc., can solve the problem of neglecting wind curtailment and power limit, not considering the operating characteristics of P2G devices, and not considering gas heat and power cogeneration Problems such as reduction of heat load of generating units

Inactive Publication Date: 2020-04-21
CHONGQING UNIV
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Problems solved by technology

[0004] To sum up, the existing optimization model has the following problems: first, it ignores the phenomenon of “abandoning wind and limiting power” in the actual system; second, it does not consider the actual operating characteristics of P2G devices; heat load reduction

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  • A Construction Method of Integrated Load Shedding Model of Electric-Gas Interconnected System Considering Wind Power Abandonment

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[0079] 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.

[0080] see figure 1 , the present invention uses the IEEE14-NGS10 electrical-gas interconnection system to verify the embodiment, and the system is composed of two parts, the IEEE14 node power system and the NGS10 node natural gas system.

[0081] (1) Basic data preparation

[0082] figure 1 There are 5 generators in the IEEE14 node standard system, the total installed capacity of thermal power is 590MW, and there are 11 electric loads, with a peak load of 570MW; node 6 is connected to a wind f...

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Abstract

The invention discloses a method for constructing a comprehensive load shedding model of an electrical interconnection system considering the disuse of the wind power. The method can be widely applied to the calculation of the comprehensive load shedding variable of the electrical interconnection system, and is particularly suitable for the large-scale access condition of the wind power new energy to the electrical interconnection system. A heat load shedding variable and a wind power disused variable are added to an objective function of an optimization model. The minimum sum of a power load, a gas load, the heat load shedding variable and the wind disused variable is adopted as the objective function of the optimization model. A consumption electric power and an injected flow variable in a P2G device model are added to the informal constraints of the optimization model. The upper and lower limit constraints of the heat load shedding variable and the wind disused variable, and the capacity constraint of the consumption electric power of the P2G device are considered for the non-informal constraints of the optimization model.

Description

technical field [0001] The invention belongs to the field of comprehensive energy systems, and aims to realize the calculation of the comprehensive load reduction amount of the electric-gas interconnection system, and specifically relates to a comprehensive load reduction optimization model considering wind power abandonment. 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. Therefore, the electrical-gas interconnection system including P2G has become one of the important trends in the development of the energy field in the future. It has the characteristics of...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/14F17D1/02
CPCF17D1/02H02J3/003H02J3/14H02J2203/20Y02B70/3225Y04S20/222
Inventor 余娟郭林马梦楠赵霞颜伟
Owner CHONGQING UNIV
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