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A storage and distribution integrated design microgrid control method

A control method and micro-grid technology, applied in the direction of AC network load balancing, single-grid parallel feeding arrangement, AC network with the same frequency from different sources, etc. Issues such as the early realization of energy saving and emission reduction targets

Active Publication Date: 2017-06-13
樊朝晖 +3
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The technology for connecting a high proportion of renewable energy to power generation in large-scale transmission grids is still immature and difficult to achieve in the short term, which is not conducive to the early realization of national energy conservation and emission reduction goals

Method used

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  • A storage and distribution integrated design microgrid control method
  • A storage and distribution integrated design microgrid control method
  • A storage and distribution integrated design microgrid control method

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Embodiment Construction

[0076] The present invention will be described in further detail below with reference to the accompanying drawings and examples.

[0077] figure 1 Design the grid-connected structure and energy flow diagram of the micro distribution network for typical storage and distribution integration. by closing figure 1 When the circuit switch (S2) is turned off, the microgrid enters the network operation; otherwise, the microgrid enters the isolated network operation. When in the network operation state, if the circuit breaker (S3) at the common connection point is closed, the microgrid in network operation is then connected to the external network power supply (13) through the medium voltage AC network (12) , the microgrid enters the grid-connected operation state. Such as figure 1 As shown by the middle dotted line, multiple microgrids in the networked or grid-connected operating state can be connected end-to-end through the medium-voltage AC network (12) to form the connected mic...

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Abstract

The invention discloses a storage and distribution integrated design microgrid control method. It takes the energy storage arrays distributed in each microgrid as the core control object, and realizes the active and reactive automatic balance control of the connected microgrids. The power is fixed and distributed to each micro-grid control module; each micro-grid control module can independently maintain the power balance in the grid in the isolated grid state, and cooperate with the energy management module to realize the distribution of distributed power generation units in the networked and grid-connected state. fixed value distribution. The present invention realizes power mutual aid between adjacent microgrids without external network power supply support through low-voltage and medium-voltage two-stage distribution networks, which improves the operating reliability of the microgrids; enables the microgrids to continuously electromigrate between various working conditions, automatically Maintain the balance of power generation and power consumption, improve power quality, and meet the requirements for safe power consumption. Maximize the use of clean power generation resources such as wind and light, and minimize the use of oil-based electricity to reduce environmental pollution.

Description

technical field [0001] The invention belongs to the technical field of micro-distribution network, and in particular relates to a control method for a micro-distribution network with integrated storage and distribution design. Background technique [0002] Connecting distributed wind power and photovoltaic power generation units to the isolated micro-distribution network can improve the environmental protection of energy use and solve the problems of pollution and high cost caused by excessive reliance on diesel power generation. But at the same time, users are faced with the problems of intermittent power generation output and poor power quality. The above problems can be alleviated by adding an energy storage unit, but it is easy to fail to provide reliable power to users due to insufficient wind power, solar power generation or energy storage capacity, or failure of the energy storage unit. At the same time, the problem of environmental pollution cannot be completely sol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/06H02J3/46H02J3/28
Inventor 樊朝晖李庄彭旭华谢东亮
Owner 樊朝晖
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