A method for optimizing and smoothing microgrid operation

An operation method and micro-grid technology, applied in the field of power transmission and distribution, can solve problems such as harsh environment and frequent adjustment of battery packs, and achieve the effect of smooth switching

Active Publication Date: 2020-03-10
中腾微网(北京)科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, if the control strategy is unreasonable, in order to ensure that the state of charge of the supercapacitor remains within the limit, the output of the battery pack will be frequently adjusted.
All of these will make the environment of the DC microgrid even worse when it is connected to the grid

Method used

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  • A method for optimizing and smoothing microgrid operation
  • A method for optimizing and smoothing microgrid operation
  • A method for optimizing and smoothing microgrid operation

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Embodiment Construction

[0047] figure 1 It shows a smart DC microgrid system 10 of the present invention, the microgrid 10 system includes: a photovoltaic power generation array 12, a plurality of local loads 14, a grid-connected module 15, an energy storage device 13, a monitoring device 11 and a DC bus ;

[0048] The grid-connected module 15 is used to control the island operation of the DC microgrid system 10 or grid-connected operation with the distribution network 20;

[0049] The DC bus is used to connect the energy storage device 13, the photovoltaic power generation array 12, the grid-connected module 15 and the local load 14, and is used for power exchange in the microgrid system 10 and power exchange between the microgrid system 10 and the distribution network 20 ;

[0050] The monitoring device 11 includes:

[0051] The photovoltaic power generation array monitoring module 112 is used to monitor the photovoltaic power generation array 12 in real time and predict the power generation of ...

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Abstract

The invention discloses an intelligent direct current micro power grid system. Through a remote terminal to perform intelligent control over a direct current micro power grid system, it is possible to effectively monitor the operation conditions of the equipment in the direct current micro power grid and to instantly understand and process the abnormal conditions of equipment in the direct current micro power grid. In addition, the monitoring device of the micro power grid system can determine the power generating power of a photovoltaic power generation array, determine the conversion rate of the power from an energy storage device into a power distribution network, determine the electrical loads inside the direct current micro power grid, and determine the capacity of the energy storage device according to the power generating power of the distributed power generation equipment, the conversion rate of the power from the energy storage device into the power distribution network and the electrical loads inside the direct current micro power grid. In addition, the system can also realize the smooth switching from isolated island operation to power-gridding operation.

Description

[0001] Technical field [0002] The invention relates to the field of power transmission and distribution, in particular to an optimized and smooth operation method for a microgrid. Background technique [0003] With the gradual exhaustion of conventional energy sources and the increasing environmental pollution, countries around the world are increasingly paying attention to distributed power generation technologies such as solar energy, wind energy, batteries, and flywheel energy storage. As an important part of the smart grid, microgrid is a high-tech technology that is of great significance to the promotion of new energy, energy saving, and carbon emission reduction. trend. [0004] The microgrid is a controllable distributed power generation and consumption system composed of distributed energy sources such as photovoltaics and loads. Among them, the microgrid that transmits and utilizes electric energy in the form of DC is called a DC microgrid. At the same time, compa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/38H02J3/32
CPCH02J3/32H02J3/383H02J3/388Y02E10/56Y02E70/30Y02P80/14
Inventor 张然高雪花
Owner 中腾微网(北京)科技有限公司
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