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Multi-target run scheduling method for micro-grid containing hybrid energy storage system of electric vehicle

A hybrid energy storage system and electric vehicle technology, applied in the field of micro-grid, can solve the problems of difficult operation, high cost, difficulty in adapting to the diverse power supply requirements of users' safety and reliability requirements, etc.

Active Publication Date: 2016-07-27
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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  • Abstract
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Problems solved by technology

However, with the continuous expansion of the grid scale, the disadvantages of ultra-large-scale power systems are becoming more and more prominent, such as high cost, difficult operation, and difficulty in adapting to the increasingly high safety and reliability requirements of users and the diversified power supply needs.

Method used

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  • Multi-target run scheduling method for micro-grid containing hybrid energy storage system of electric vehicle
  • Multi-target run scheduling method for micro-grid containing hybrid energy storage system of electric vehicle
  • Multi-target run scheduling method for micro-grid containing hybrid energy storage system of electric vehicle

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Embodiment

[0069] The microgrid structure used in the calculation example in this paper is as follows: figure 1 shown. The microgrid in the figure consists of industrial load 4, thermal and electric load 5, micro gas turbine MT6, residential load 9, commercial load 10, wind turbine WT11, fuel cell FC12, photovoltaic cell PV14, electric vehicle EV16, allowable interruption load 17 and storage battery 18 etc., and the microgrid is in grid-connected mode. The rated capacity of the battery is 500kW·h, and the charging is optimal when the depth of discharge is 50%-75%, so the initial power is set to 60%, the charging and discharging efficiency is 1, ignoring self-discharge, the inverter capacity of the battery is 40kVA; The inverter capacity of the battery is 30kVA; the upper and lower limits of the power of the electric vehicle are set to 30kW and -30kW respectively, and the inverter capacity is 30kVA; the fuel cell works on the basis of heat, so it is linear with the output power of the mi...

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Abstract

The invention relates to a multi-target run scheduling method for a micro-grid containing a hybrid energy storage system of an electric vehicle. The method is characterized by comprising the following steps of (1) constructing energy Internet on the basis of considering the electric vehicle as load and power generation units simultaneously and the combined heat and power heating benefit; (2) constructing a multi-target optimal scheduling model for the micro-grid containing the hybrid energy storage system of the electric vehicle according to the energy Internet and comprehensively considering economic and environment benefits to obtain target functions and constraints of the model; and (3) solving the multi-target optimal scheduling model for the micro-grid through an NSGA-II multi-target optimization algorithm to obtain a Pareto front solution, and obtaining an optimal run scheduling scheme for the micro-grid in 24 hours. In comparison with the prior art, the method has the advantages of good economic benefit and capabilities of improving the environment, reasonably distributing the output, carrying out peak load shifting and prolonging the service life.

Description

technical field [0001] The invention relates to the field of microgrids, in particular to a multi-objective operation scheduling method for a microgrid including a hybrid energy storage system for electric vehicles. Background technique [0002] Micro-grid (Micro-Grid), also translated as micro-grid, is a new type of network structure, which is a system unit composed of a group of micro-power sources, loads, energy storage systems and control devices. Microgrid is an autonomous system capable of self-control, protection and management, which can be connected to the external grid or run in isolation. Microgrid is a concept relative to the traditional large power grid. It refers to a network composed of multiple distributed power sources and their related loads according to a certain topology, and is connected to the conventional power grid through static switches. [0003] The development and extension of microgrids can fully promote the large-scale access of distributed pow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02J3/32H02J3/46
CPCB60L55/00H02J3/00H02J3/008H02J3/32H02J3/385H02J3/386H02J3/387H02J3/46H02J2203/20Y02E10/76Y02T10/40
Inventor 程启明黄山褚思远张强杨小龙张海清
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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