A multi-objective programming method for micro-energy grid considering thermal desalination

A multi-objective planning, micro-energy technology, used in resources, instruments, data processing applications, etc.

Inactive Publication Date: 2019-02-01
TIANJIN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a multi-objective planning method for a micro-energy network considering thermal seawater desalination. The present invention can effectively solve the multi-objective planning problem of a micro-energy network considering seawater desalination and renewable energy integration. See the following description for details:

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  • A multi-objective programming method for micro-energy grid considering thermal desalination
  • A multi-objective programming method for micro-energy grid considering thermal desalination
  • A multi-objective programming method for micro-energy grid considering thermal desalination

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Embodiment 1

[0042] Embodiments of the present invention provide a multi-objective planning method for micro-energy networks considering thermal desalination of seawater and utilization of renewable energy, and plan micro-energy networks including wind turbines, photovoltaics, combined cooling, heating and power supply systems, seawater desalination, and storage batteries. It is instructive, see the description below for details:

[0043] 101: Construct a micro-energy network consisting of fans, photovoltaics, CHP, gas boilers, electric boilers, electric refrigerators, absorption refrigerators, seawater desalination devices and water storage tanks, and use two types of renewable energy utilization equipment: fans and photovoltaics ;

[0044] 102: Obtain natural gas consumed and electric energy produced when CHP works in heat-constant power mode, obtain heat energy provided by CHP and gas-fired boilers to heat load, absorption refrigerator and seawater desalination device; obtain heat and c...

Embodiment 2

[0048] The scheme in embodiment 1 is further introduced below in conjunction with specific examples and calculation formulas, see the following description for details:

[0049] 201: Build a micro-energy network;

[0050] 1) The structure and operation mechanism of the micro energy network

[0051] Among them, the structure of the micro energy network is as follows: figure 1 As shown, it is composed of fan, photovoltaic, CHP, gas boiler, electric boiler, electric refrigerator, absorption refrigerator, seawater desalination device and water storage tank. In order to make full use of renewable energy, two types of renewable energy utilization equipment, wind turbine and photovoltaic, are used at the same time.

[0052] In the embodiments of the present invention, it is assumed that the CHP works in a thermally constant power mode (this mode is a technical term in this field, which will not be described in detail in the embodiments of the present invention), because the thermal...

Embodiment 3

[0112] Combine below figure 2 and image 3 The scheme in embodiment 1 and 2 is further introduced, see the following description for details:

[0113] In order to study the influence of the operation strategy of the seawater desalination device on the multi-objective planning of the micro-energy network, the embodiment of the present invention sets up two scenarios for comparative analysis. In Scenario 1, when the water volume in the storage tank is below the minimum value, the desalination starts and operates at rated power. In Scenario 2, the operation mode of the desalination plant is determined through optimization. The optimization problem is solved using the improved non-dominated sorting genetic algorithm (NSGA-II).

[0114] The Pareto fronts in different scenarios are as follows figure 2 (a) shown. It can be seen that under the same annual CO2 emissions, the full life cycle cost of Scenario 2 is lower than that of Scenario 1. In other words, Scenario 2 has lowe...

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Abstract

The invention discloses a multi-objective planning method of micro-energy network considering thermal seawater desalination, which comprises the following steps: constructing a micro-energy network composed of a fan, a photovoltaic, a CHP, a gas boiler, an electric boiler, an electric refrigerator, an absorption refrigerator, a seawater desalination device and a water storage tank, and adopting two renewable energy utilization equipments of the fan and the photovoltaic; Acquisition of natural gas consumed by CHP operating in thermostatic mode and electric power produced, heat energy supplied by CHP and gas boilers to heat load, absorption refrigerator and desalination unit; Obtain heat and cold energy balance; Obtaining electrical energy supplied to the electric refrigerator and electric boiler, and thermal energy consumption of the absorption refrigerator; Obtaining heat energy consumed by the seawater desalination unit; An optimization model is constructed to minimize the life cyclecost and the annual CO2 emission, and then the corresponding energy balance constraints and equipment operation constraints are obtained. The invention can effectively solve the multi-objective planning problem of the micro-energy network in which the seawater desalination and the renewable energy are integrated.

Description

technical field [0001] The invention relates to the field of micro-energy network and distributed energy planning, in particular to a multi-objective planning method for micro-energy network considering thermal seawater desalination. Background technique [0002] The proposal of the concept of Energy Internet provides new ideas for alleviating energy crisis and environmental problems, and has received widespread attention. Micro energy grid is an important form of energy Internet, usually including multiple forms of energy. With the rapid development of renewable energy, the phenomenon of abandoning wind and solar is becoming more and more serious. Micro-energy grid is an efficient distributed energy supply system, which can be used to supply electricity, cold, heat and fresh water at the same time. costs and CO2 emissions. [0003] China's freshwater resources are both scarce and uneven, and there are large temporal and spatial differences. China is listed by the United...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q10/06G06Q50/06
CPCG06Q10/04G06Q10/06313G06Q50/06Y02E40/70Y04S10/50
Inventor 王丹刘维康余晓丹兰宇陈培育于建成王旭东崇志强姚程周长新
Owner TIANJIN UNIV
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