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Micro-grid energy optimization and evaluation method based on full energy flow model

An energy optimization and microgrid technology, applied in instruments, data processing applications, forecasting, etc., can solve the problems of not being able to systematically describe energy flow, ignoring the relationship between interconnections and mutual coupling, etc., to improve the global energy utilization level, Guarantee economic optimal operation and achieve the effect of multi-level refined energy management

Inactive Publication Date: 2016-03-02
STATE GRID CORP OF CHINA +1
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Problems solved by technology

In the existing management methods, the thermal system and the power system are often separated, and they are controlled and managed separately through different quantitative factors, thus ignoring the interrelated and coupled relationships between them, and cannot be systematically described The characteristics of energy circulation in each link, comprehensively evaluate the economic benefits of each link

Method used

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  • Micro-grid energy optimization and evaluation method based on full energy flow model
  • Micro-grid energy optimization and evaluation method based on full energy flow model
  • Micro-grid energy optimization and evaluation method based on full energy flow model

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Embodiment

[0114] In order to make the technical solution of the present invention more clear, take the microgrid containing wind and gas storage as an example, combine Image 6 And the specific implementation process will describe the present invention in detail.

[0115] First, according to the network topology of the project, a corresponding model is established for the selected micro gas turbines, photovoltaic power generation, wind power generation, energy storage devices, cooling and heating loads and other related information.

[0116] (1) Construct the microgrid omnipotent flow model. It mainly includes: energy elements, device elements and information elements of the photovoltaic power generation subsystem and the combined cooling, heating and power supply subsystem.

[0117] Microgrid energy elements:

[0118] Solar E pv =A pv P pv , the chemical energy E of natural gas f =A f P f , the electrical energy E of the electric load p =A p P p , the thermal energy E of the...

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Abstract

The invention relates to a micro-grid energy optimization and evaluation method based on a full energy flow model. The method includes following steps: (1) building the full energy flow model: including energy and energy flow analysis; energy conversion link analysis, energy distribution link analysis, energy storage link analysis, and energy utilization link and energy management link analysis; (2) building a full energy flow network model; (3) performing energy optimization management based on the full energy flow network model including energy static optimization management and energy dynamic optimization management; (4) establishing an index system of the full energy flow model; and (5) performing comprehensive evaluation of the full energy flow model. According to the method, processes of generation, conversion, transmission, storage, and utilization of different types of energies in a micro-grid are described via the manner of digital abstract representation, the index system is established, the micro-grid energy optimization method is proposed, unified quantification of different types of energies is realized via digital representation of energy flow, and comprehensive analysis and evaluation of energy efficiency utilization of overall and partial links are performed.

Description

technical field [0001] The invention relates to an optimization and evaluation method for a micro-grid system, in particular to an energy optimization and evaluation method for a micro-grid based on an all-energy flow model. Background technique [0002] In recent years, with the deteriorating environment and the scarcity of non-renewable energy, renewable clean energy power generation technologies represented by wind energy and solar energy have developed rapidly. Among them, the flexible and decentralized connection of small wind power generation and photovoltaic power generation to the user-side distribution network can improve the reliability of local power supply, reduce transmission loss, improve the utilization rate of primary energy and reduce exhaust emissions. The wind and photovoltaic power generation systems connected to the distribution network in this way are collectively referred to as distributed power generation. Microgrid refers to an independent intellige...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q50/06
CPCY02E40/70Y04S10/50
Inventor 苏剑李洋刘海涛吴鸣季宇于辉俞勤政
Owner STATE GRID CORP OF CHINA
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