Micro-grid electricity energy storage and ice storage combined optimization scheduling method

A scheduling method and joint optimization technology, which is applied in the optimal scheduling of ice storage and electric energy storage of microgrid, can solve the problem of not considering the coordinated optimization of electric energy storage and ice storage at the same time, and achieve the effect of improving energy use efficiency and saving electricity bills

Active Publication Date: 2017-05-24
ZHEJIANG UNIV
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Problems solved by technology

The current microgrid optimal dispatching system does not consider the collabo

Method used

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  • Micro-grid electricity energy storage and ice storage combined optimization scheduling method
  • Micro-grid electricity energy storage and ice storage combined optimization scheduling method
  • Micro-grid electricity energy storage and ice storage combined optimization scheduling method

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Embodiment Construction

[0046] The present invention will be further described below in conjunction with the accompanying drawings.

[0047] The topology diagram of the microgrid is as follows: figure 1 As shown, m groups of photovoltaic power generation systems, batteries and / or DC loads are respectively connected to m DC buses, connected to the common AC bus through bidirectional converters, and ice storage devices are installed on the AC buses. Then the AC bus is connected to the distribution network through the transformer. The system can meet both DC load demand and AC load demand. The whole system can be divided into DC power supply, DC load and AC power supply, AC load. The local DC bus is used to connect the DC energy equipment and connect to the AC system through a bidirectional converter. This structure enables batteries and DC loads to use the energy output from photovoltaics before AC and DC conversion. By eliminating unnecessary energy loss during AC-DC conversion, consumers can take...

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Abstract

The invention discloses a micro-grid electricity energy storage and ice storage combined optimization scheduling method based on AC/DC load, cooling load and photovoltaic generating prediction result and electricity price information; the method takes the minimum electricity charge as the object, builds an optimization model for electricity energy storage charge and discharge state and refrigerating machine and ice storage tank cooling load distribution, solves the optimization model, and obtains the optical electricity energy storage charge and discharge strategy and refrigerating machine and ice storage tank cooling load distribution strategy. The method simultaneously considers electricity energy storage and ice storage combined optimization, can more effectively lifting energy usage effect and carry out peak-load shifting, thus saving electricity charges; the method can be applied to intelligent micro-grid optimization scheduling systems of various types.

Description

technical field [0001] The invention relates to an optimal scheduling method for electric energy storage and ice storage in a microgrid, and belongs to the field of new energy and power demand side response. Background technique [0002] With the development of smart grids and the popularization of low-carbon technologies, small-scale new energy power generation, electric energy storage devices, ice storage devices, etc. will be widely used in power users in the future. These technologies not only affect the original grid operation mode, but also bring more flexibility to the use of electric energy on the user side. Users can respond to the price incentive signal of the grid to change their electricity consumption behavior, that is, demand-side response. Demand-side response can reduce power grid peak power consumption and increase valley power consumption. The microgrid optimal dispatching system is an important means to realize the user-side demand-side response, and it h...

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Application Information

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IPC IPC(8): G06Q10/04G06Q50/06H02J3/28H02J3/32
CPCG06Q10/04G06Q50/06H02J3/003H02J3/28H02J3/32H02J2203/20Y02E10/56Y02E40/70Y02E70/30Y02P80/14Y04S10/50
Inventor 华煌圣董树锋刘育权何仲潇王国成江艺宝
Owner ZHEJIANG UNIV
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