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Microgrid distributed power supply decentration optimization operation method based on power generation prediction

A technology for distributed power generation and power generation prediction, which is applied in the direction of single-network parallel feeding arrangement, etc., and can solve problems such as difficult coordination relations, differences, and line impedance influences

Active Publication Date: 2020-03-06
NORTHEASTERN UNIV
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Problems solved by technology

However, the droop control is a decentralized control, and it is difficult to coordinate the relationship between the units; the droop control is a differential control and is easily affected by the line impedance

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  • Microgrid distributed power supply decentration optimization operation method based on power generation prediction
  • Microgrid distributed power supply decentration optimization operation method based on power generation prediction
  • Microgrid distributed power supply decentration optimization operation method based on power generation prediction

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Embodiment Construction

[0066] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0067] A decentralized optimization operation method for microgrid distributed power generation based on power generation prediction, such as figure 1 shown, including the following steps:

[0068] Step 1: Based on multiple types of data, use the long-term short-term memory network, that is, the LSTM method to predict the local power generation of each distributed power source. The specific method is:

[0069] Step 1.1: Collect information such as regional microgrid historical power generation data, regional weather information, date type, etc., every 15 minutes, with a total of 96 points collected every day;

[0070] Step 1.2: Data preprocessing, perform data preprocessing on the collected data, eliminate outlier data, replace outliers with adjacent day interpolation, and form a training data set;

[0071] Step 1.3: U...

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Abstract

The invention provides a microgrid distributed power supply decentration optimization operation method based on power generation prediction, which relates to the technical field of power system microgrid optimization operation. The method comprises the following steps of: firstly, based on multiple types of data, performing local power generation prediction on each distributed power supply by utilizing a long-short-term memory network method, and improving a system optimization model based on a predicted power generation output result without collecting load information for modeling and getting rid of dependence on a control center; then, designing a decentration optimization algorithm based on a broadcast mode-based statement propagation method to realize decentration optimization of power generation output, and finally, coordinating and fusing an optimization result and droop control and realizing combination of a coordination optimization layer and a system control layer and realizing real-time optimization control. According to the microgrid distributed power supply decentration optimization operation method based on power generation prediction provided by the invention, load information is not needed, and decentration is realized through power generation output prediction and a distributed optimization algorithm; and in organic combination with optimization and droop control, real-time optimization control is realized.

Description

technical field [0001] The invention relates to the technical field of optimized operation of a power system micro-grid, in particular to a method for decentralized optimal operation of distributed power sources in a micro-grid based on power generation prediction. Background technique [0002] With people's emphasis on the utilization of sustainable and clean energy, more and more renewable distributed generators (DGs) are connected to the microgrid, which brings risks and challenges to the stable operation of the microgrid. Therefore, it is urgent to study effective control methods to ensure the stable and reliable operation of the microgrid, especially the economical and efficient power distribution strategy is the basis for optimal operation and control. At this stage, the relevant research on the optimal operation of distributed power sources in microgrids can be divided into two categories: centered and non-centered optimization methods according to different optimizat...

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Application Information

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IPC IPC(8): H02J3/46H02J3/48H02J3/50
CPCH02J3/46H02J3/48H02J3/50
Inventor 章世聪杨东升张化光周博文刘鑫蕊罗艳红王智良
Owner NORTHEASTERN UNIV
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