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Micro-grid energy optimization method based on versatile flow model

An energy optimization and micro-grid technology, applied in the energy industry, instruments, sustainable manufacturing/processing, etc., can solve problems such as energy flow that cannot be described systematically, improve the global energy utilization level, ensure economical optimal operation, improve The effect of global energy optimization utilization level

Inactive Publication Date: 2016-03-30
STATE GRID CORP OF CHINA +3
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Problems solved by technology

[0003] Aiming at the dynamic characteristics and energy management problems in the current microgrid, it is necessary to provide a systematic optimization management and evaluation method to overcome the separation of the thermal system and the power system in the existing management methods. Through different quantitative factors, They are controlled and managed separately, thus ignoring the interrelated and coupled relationships between them, and the defects that cannot systematically describe the characteristics of energy circulation in each link, so as to comprehensively evaluate the economic benefits of each link

Method used

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  • Micro-grid energy optimization method based on versatile flow model
  • Micro-grid energy optimization method based on versatile flow model
  • Micro-grid energy optimization method based on versatile flow model

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Embodiment

[0079] In order to make the technical solution of the present invention clearer, take the photovoltaic power generation sub-system and the triple supply system of cooling, heating and power in the microgrid as examples. The system is dynamically optimized and combined, and the specific implementation process is combined with Figure 4 The present invention will be described in detail.

[0080] (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.

[0081] Microgrid energy elements:

[0082] 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 cooling load c =A c P c , the heat energy E of the heat load h =A h P h .

[0083] Microgrid device class elements:

[0084] Photovo...

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Abstract

The invention relates to a micro-grid energy optimization method, in particular to a micro-grid energy optimization method based on a versatile flow model. The method comprises the steps of (1) constructing a versatile flow model; (2) constructing a versatile flow digital model; and (3) conducting energy optimized management based on the versatile flow digital model, including energy static optimized management and energy dynamic optimized management. The method systematically describes the energy characteristics of energy flow in the processes of generation, conversion, transmission, storage and utilization through the unified quantitative versatile flow digital model, thereby facilitating the comprehensive energy optimized management of an energy network from the two aspects of static energy optimization and dynamic energy optimization; and meanwhile, the theory can also be used flexibly for energy unified quantitative analysis of a single device through lumped constraints. In this way, the invention achieves micro-grid multi-level fine energy management, improves the overall level of energy utilization, and ensures economic optimized operation.

Description

technical field [0001] The invention relates to an energy optimization method for a microgrid, in particular to an energy optimization method for a microgrid based on an all-energy flow model. Background technique [0002] With the deterioration of the environment and the reduction of non-renewable energy, renewable clean energy power generation technologies represented by wind energy and solar energy have developed rapidly. Connecting small-scale wind power generation and photovoltaic power generation to the user-side distribution network flexibly and decentralizedly improves the reliability of local power supply, reduces transmission loss, improves the utilization rate of primary energy and reduces 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 intelligent system integrated with distributed power generati...

Claims

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Application Information

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IPC IPC(8): G06Q10/04G06Q50/06
CPCY02P80/14
Inventor 李洋刘海涛吴鸣季宇于辉俞勤政
Owner STATE GRID CORP OF CHINA
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