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Micro-grid energy optimization management system based on electric energy router

An energy optimization and management system technology, applied in photovoltaic power generation, single-grid parallel feeding arrangement, etc., can solve the problem of optimizing scheduling without considering the application of power routers

Inactive Publication Date: 2019-05-03
SHANGHAI UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the optimal scheduling among multiple distributed energy sources in the microgrid seldom considers the application of power routers

Method used

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  • Micro-grid energy optimization management system based on electric energy router
  • Micro-grid energy optimization management system based on electric energy router
  • Micro-grid energy optimization management system based on electric energy router

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] see figure 1 , the microgrid energy optimization management system based on the power router, including the energy input layer (1) connected to the energy output layer (4) via the energy conversion layer (2) and the energy storage layer (3), the energy input layer (1), the energy The conversion layer (2), the energy storage layer (3) and the energy output layer (4) are all connected to the information layer (5), which is characterized in that: the energy input layer (1) includes wind turbines, photovoltaics, electricity and natural gas In the form of energy access, in order to maximize the use of renewable energy, photovoltaics and wind turbines adopt the maximum power point tracking control mode; the energy conversion layer (2) includes electric energy routers, cogeneration units, boilers, compression refrigeration, absorption Refrigeration equipment, which can realize the coupled transformation between different energy forms such as electricity, heat, gas, and cold, o...

Embodiment 2

[0021] Embodiment 2: This embodiment is basically the same as Embodiment 1, and the special features are as follows:

[0022] The energy input layer (1) supports multiple energy access forms of wind, light, electricity and natural gas, among which the renewable energy photovoltaic and wind power adopt the maximum power point tracking control mode; the energy conversion layer (2) can realize different energy Mutual transformation between forms, and provide multiple plug-and-play interfaces of different voltage levels for distributed energy through the power router; the power router has communication and control functions, and can realize voltage / frequency conversion as a new type of power electronic conversion equipment , power quality adjustment, reactive power compensation, renewable energy access and power flow control functions; the energy storage layer (3) can stabilize the randomness and volatility of distributed renewable energy, and cooperate with the energy output layer...

Embodiment 3

[0023] Embodiment 3: The microgrid energy optimization management system based on the power router is described in detail as follows:

[0024] The variable description of the microgrid energy optimization management system based on the power router is shown in Table 1.

[0025] Table 1

[0026]

[0027]

[0028] Such as figure 1 As shown, the objective function formula (1) of the microgrid energy optimization management system based on the electric energy router is to minimize the operating cost of the microgrid, including net electricity purchase cost, gas purchase cost, combined heat and power unit, gas boiler and storage Energy operating and maintenance costs. In addition, the start / stop costs of cogeneration units and gas boilers were taken into account.

[0029]

[0030] In the formula, T is the scheduling time, t is the time interval (such as 1 hour), SU k，t / SD k，t is the operation and maintenance cost, start / stop cost of cogeneration unit and gas boiler...

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Abstract

The invention discloses a micro-grid energy optimization management system based on an electric energy router. The system comprises an input layer, a conversion layer, a storage layer, an output layerand an information layer. A plurality of energy access forms such as fans, photovoltaics, electric power and natural gas of the input layer realize the mutual conversion among different energies through the electric energy router, a combined heat and power generation unit, a boiler and a refrigerator of the conversion layer, so as to meet load requirements such as cold, heat and electricity of the output layer. Due to the fact that a power load changes violently, the real-time balance is needed and the electric energy router based on hierarchical control is applied to control voltage and frequency stability. In order to further improve the reliability and economy of the system, the storage layer configures certain energy storage at a load side to inhibit the randomness and the volatilityof renewable energy sources. The information layer optimizes and manages the operation of the controllable equipment and the energy transaction with the Internet with the goal of minimizing the systemoperation cost under the condition that the load requirement is met according to the energy price, the load prediction and the renewable energy power generation prediction.

Description

technical field [0001] The invention relates to the field of power electronic equipment and micro-grid systems, and more specifically relates to a micro-grid energy optimization management system based on a power router. Background technique [0002] In recent years, the energy crisis and environmental pollution have made the development of distributed renewable energy highly valued. Due to the characteristics of decentralization, intermittency, and volatility, the direct grid connection of large-scale distributed energy will have a certain impact on the stability of the public energy network. Therefore, it has become a trend to integrate and optimize various distributed energy sources in the form of micro-grids. [0003] In the microgrid system, power electronic converters have been proposed and applied to the access and integration of distributed renewable energy. As a multi-port power electronic conversion device with communication and control functions, the power route...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38
CPCY02E10/56
Inventor 汪飞施天灵郭慧顾永文张笠君王奇丰
Owner SHANGHAI UNIV
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