Microgrid multi-energy joint optimal scheduling method

A technology of joint optimization and scheduling methods, applied in wind power generation, electrical components, circuit devices, etc.

Active Publication Date: 2019-02-12
NANJING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, provide a micro-grid multi-energy joint optimal dispatch method, and establish a micro-grid multi-energy joint optimal dispatch Model, the micro-

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  • Microgrid multi-energy joint optimal scheduling method

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Embodiment Construction

[0099] This embodiment provides a microgrid multi-energy joint optimal scheduling method, such as figure 1 shown, including the following steps,

[0100] Step 1. Based on the output of energy supply equipment and the operation status of energy storage equipment in different scenarios, build a physical model of the multi-energy system.

[0101] Among them, the physical model of the multi-energy system is as follows: figure 2 As shown, including distributed renewable energy, combined heat and power units, thermal energy storage, electric energy storage and other controllable distributed power sources, the system can simultaneously provide heat and electricity for the load, and the power network Coupling between heat and heat networks based on combined heat and power units. In order to ensure the balance between the supply and demand of heat and electric energy at the same time, when the electric energy in the system is excessive, it can be absorbed by the battery energy stora...

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Abstract

The invention relates to a microgrid multi-energy joint optimal scheduling method. The method includes: step 1, on the basis of force application conditions of energy supply equipment and operating states of energy storage equipment in different scenes, constructing a physical model of a multi-energy system; step 2, establishing unit mathematical models, including a wind power generator model, a photovoltaic power generation model, a micro-gas turbine model, a fuel cell model and an energy storage model, of the microgrid multi-energy system; step 3, in order to realize lowest comprehensive cost in system operation, constructing a microgrid multi-energy optimal scheduling model by taking DG operation constraints, system safety constraints and multi-energy coupling characteristics into comprehensive consideration; step 4, on the basis of reversed order dynamic planning, solving the microgrid multi-energy optimal scheduling model to obtain a microgrid multi-energy joint optimal operatingstrategy. By the microgrid multi-energy joint optimal scheduling method, operating demands in different scenes can be met, electricity-thermal coordinated optimal scheduling schemes are provided for operating of a comprehensive energy microgrid in different scenes, and high integral operating efficiency and high economic benefits are realized.

Description

technical field [0001] The invention relates to a micro-grid multi-energy joint optimal dispatching method, which belongs to the field of micro-grid optimal dispatching devices. Background technique [0002] The microgrid contains various types of distributed renewable energy such as photovoltaics, wind power, energy storage, ground source heat pumps, solar thermal power generation, gas power generation, and biomass power generation. The penetration rate of distributed power sources is high, while new energy sources such as photovoltaics and wind power Large fluctuations and complex network topology bring great challenges to the flexible and controllable dispatching of active distribution networks. Whether various factors can be considered comprehensively, how to reasonably arrange the operation plan of these micro-power sources, to ensure that the micro-grid can meet the load requirements at different time periods, and at the same time realize the high-quality operation of ...

Claims

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Application Information

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IPC IPC(8): H02J3/38H02J3/46H02J3/00
CPCH02J3/008H02J3/381H02J3/46H02J2203/20Y02E10/76
Inventor 高辉宋乐宋伟曹佳男虞小辉
Owner NANJING UNIV OF POSTS & TELECOMM
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