Fine scheduling method for hybrid micro-grid

A scheduling method and micro-grid technology, applied in the field of micro-grid, can solve the problems of inaccurate cost calculation of hybrid micro-grid, unreasonable allocation of charge and discharge process, etc., achieve low cost, reduce economic cost, and improve change efficiency

Active Publication Date: 2021-10-22
STATE GRID CHONGQING ELECTRIC POWER CO ELECTRIC POWER RES INST +2
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  • Claims
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Problems solved by technology

[0004] The purpose of the invention is to: aim at the above-mentioned problems, to provide a fine scheduling method for hybrid microgrid; the present invention solves the problem of inaccurate cost calculation of hybrid microgrid; solves the problem of unreasonable distribution of charging and discharging processes

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  • Fine scheduling method for hybrid micro-grid
  • Fine scheduling method for hybrid micro-grid
  • Fine scheduling method for hybrid micro-grid

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Embodiment 1

[0029] A fine-grained scheduling method for hybrid microgrids, such as figure 1 shown, including:

[0030] S1: Determine the units included in the hybrid microgrid and establish a topology.

[0031] In the above steps, the topological structure is as follows figure 2 As shown, including: photovoltaic unit, wind power unit, hydropower unit, alternator, electrolyzer, hydrogen storage battery, energy storage battery, charge management module, inverter, AC system and AC / DC load; among them, the photovoltaic unit and The wind power unit is connected to the electrolyzer, and the electrolyzer is connected to the charging management module through the hydrogen storage battery and the hydrogen fuel cell. The charging management module is also connected to the energy storage battery, the rectifier AC / DC and the DC load respectively; The machine, the rectifier AC / DC and the AC load are connected; the inverter is respectively connected to the AC load and the DC load.

[0032] In this ...

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Abstract

The invention discloses a fine scheduling method for a hybrid micro-grid, and the method comprises the steps: determining units contained in the hybrid micro-grid, and building a topological structure; defining charging and discharging state switching logic of an energy storage unit in the hybrid micro-grid and calculating the magnitude of charging and discharging power; calculating power loss generated in the switching process of the inverter; calculating the energy cycle cost in the battery charging process and the electrolytic cell hydrogen production process; determining an optimal scheduling strategy of the charging process according to the cycle cost; and calculating the cost consumed by the energy supply unit in the discharging process. According to the method provided by the invention, the cost of elements such as an energy storage battery and a hydrogen production process of the hybrid microgrid can be accurately calculated, optimal distribution can be carried out on charging and discharging of each energy storage unit, and unnecessary economic loss and even influence on the service life of energy storage equipment cannot be caused; and meanwhile, the change efficiency between alternating current and direct current is effectively improved, and the economic cost is indirectly reduced.

Description

technical field [0001] The invention relates to the field of micro-grids, in particular to a fine-grained scheduling method for hybrid micro-grids. Background technique [0002] Hybrid microgrid refers to a small power generation and distribution system composed of distributed power sources, energy storage devices, energy conversion devices, related loads, monitoring and protection devices, and is an autonomous system capable of self-control, protection and management; currently The hybrid AC-DC microgrid includes a variety of new energy power generation units and multi-form energy storage. Due to the uncertainty of new energy power generation, in order to reduce the phenomenon of abandoning wind and light, energy storage batteries and hydrogen production stations are added to the microgrid. It can store electric energy during the peak period of new energy power generation, or provide electric energy for the grid when the power generation is insufficient. The consumption of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02J3/28H02J3/46H02J3/48H02J15/00G06Q10/06G06Q50/06
CPCH02J3/008H02J3/28H02J3/466H02J3/48H02J15/008G06Q10/06312G06Q10/06315G06Q50/06H02J2300/20H02J2300/24H02J2300/28H02J2300/30H02J2300/40Y02E10/56Y02E70/30
Inventor 李寒江詹航夏翰林司萌刘霜李小菊李登峰杨旼才徐瑞林刘育明张颖宫林
Owner STATE GRID CHONGQING ELECTRIC POWER CO ELECTRIC POWER RES INST
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