Energy flow optimization method for regional electric power-natural gas-heating power integrated energy system

A technology of integrated energy system and optimization method, which is applied in the field of energy flow optimization of regional electric power-natural gas-heat comprehensive energy system, can solve problems such as separate design, separate planning, neglect of the mutual influence of energy systems and the role of multi-energy complementarity, etc., to achieve reasonable Response, strengthen the effect of influence

Inactive Publication Date: 2018-05-18
TIANJIN UNIV
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  • Application Information

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Problems solved by technology

[0004] In the research on traditional energy systems, there are often problems such as separate planning and separate design, ignoring the mutual influence between different energy systems and the complementary effects of multi-energy, and the potential for collaborative analysis and optimization of electricity, gas, and heat remains to be dig further

Method used

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  • Energy flow optimization method for regional electric power-natural gas-heating power integrated energy system
  • Energy flow optimization method for regional electric power-natural gas-heating power integrated energy system
  • Energy flow optimization method for regional electric power-natural gas-heating power integrated energy system

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Embodiment 1

[0039] In order to enhance the energy flow complementary characteristics and collaborative optimization capabilities among the subsystems of the regional integrated energy system, an embodiment of the present invention provides an energy flow optimization method for the regional electric power-natural gas-heat integrated energy system, see figure 1 , figure 2 with image 3 , see the description below:

[0040] 101: Solve the energy flow comprehensive solution model according to the REGHS energy flow comprehensive solution method;

[0041] 102: Use the polynomial solving function to set the optimization objective function, and set the operating constraints of the REGHS network and the HES network;

[0042] 103: Use the primal dual interior point method to solve the optimization problem, calculate REGHS energy interaction information, and generate an energy flow optimization scheme for the integrated energy system;

[0043] 104: Obtain the energy flow operation results of ea...

Embodiment 2

[0056] The scheme in embodiment 1 is further introduced below in conjunction with specific examples and calculation formulas, see the following description for details:

[0057] 201: Establish a comprehensive solution model for the energy flow of the regional power system, the regional natural gas system, and the regional thermal system, wherein the comprehensive solution model includes the energy coupling link between each system, that is, the regional energy station;

[0058]In REGHS, EPS (electric power system) is not only the application object of distributed power generation technologies (such as wind power, photovoltaic power generation, natural gas power generation, etc.), but also the energy supplier of some energy coupling links. important support platform. The main task of NGS (Natural Gas System) is to transport and distribute natural gas from gas sources or gas transmission systems to users. With the increase of energy coupling forms such as power-to-gas and gas tu...

Embodiment 3

[0103] The feasibility of the optimization method provided in Examples 1 and 2 is verified below with specific experiments, see the following description for details:

[0104] Taking the modified EPRI low-voltage power distribution system, 11-node natural gas distribution system, and Bali Island regional heating system as examples to construct the REGHS system, select the two types of hubs described in the above examples to form the system coupling, and the results are as follows Figure 4 As shown, the effectiveness of the energy flow optimization method for the integrated energy system is verified.

[0105] Wherein, the optimization objective function and the expression of system operation constraints are the same as those in Embodiments 1 and 2. Operational constraints mainly include:

[0106] 1) In EPS, the per unit value of the voltage amplitude is between 0.95-1.05;

[0107] 2) In NGS, the minimum value of pressure is 22.5mbar; the flow limit of pipeline 12-14 is 150m ...

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Abstract

The invention discloses an energy flow optimization method for a regional electric power-natural gas-heating power integrated energy system. The energy flow optimization method comprises the steps that an energy flow integrated solving model is solved according to an REGHS energy flow integrated solving method; a polynomial solving function is utilized to set an optimization objective function andset operation constraint of an REGHS network and an HES network; a prime-dual interior point method is utilized to solve an optimization problem, REGHS energy interaction information is calculated, and an energy flow optimization scheme of the integrated energy system is generated; according to the optimization scheme, energy flow operation results of all subsystems are obtained, and whether theresults meet the operation constraint is judged; and if not, variables in an energy coupling link are adjusted till conditions are met, and then a final optimization result is output. Through the method, the influence and the multi-energy complementation effect among different energy systems are enhanced, and response of the system to price information and optimal distribution of energy flow are realized more reasonably.

Description

technical field [0001] The invention relates to the field of energy Internet and integrated energy systems, and in particular to an energy flow optimization method for a regional electric power-natural gas-thermal integrated energy system. Background technique [0002] Integrated energy system (integrated energy system, IES) is a concrete embodiment of advanced concepts such as "Internet +" at the energy physical level. It is composed of social energy supply network, energy exchange link and widely distributed terminal integrated energy unit system. It is a multi-energy Coordination, mutual aid and comprehensive utilization provide the basis, involving energy conversion, distribution and organic coordination. [0003] The regional comprehensive energy system is mainly composed of regional power systems, regional natural gas systems, regional thermal systems and other energy supply / consumption systems interconnected. Through the scientific dispatching of various energy source...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/06315G06Q50/06
Inventor 王丹王伟亮贾宏杰何桂雄智云强刘柳
Owner TIANJIN UNIV
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