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Test scenario simulation method for distributed renewable energy system with mixed AC and DC

A renewable energy, AC and DC hybrid technology, applied in electrical testing/monitoring, measuring electricity, measuring devices, etc., can solve problems such as complex calculation processes

Active Publication Date: 2022-04-12
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods all need to use optimization algorithms to optimize the existing data, and the calculation process is still relatively complicated.

Method used

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  • Test scenario simulation method for distributed renewable energy system with mixed AC and DC
  • Test scenario simulation method for distributed renewable energy system with mixed AC and DC
  • Test scenario simulation method for distributed renewable energy system with mixed AC and DC

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Embodiment Construction

[0084] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0085] The test scene simulation method of the AC-DC mixed distributed renewable energy system of the present invention includes steps such as scene combination, scene window selection, probability distance calculation, and scene reduction:

[0086] The process of the present invention is as figure 1 Shown:

[0087] First initialize as follows:

[0088] Assume that the known photovoltaic power probability density function is p pv , the known wind power probability density function is p wt , the known probability density function of AC load is p acl , the known DC load probability density function is p dcl ; The known photovoltaic power prediction error is e pv , the known wind power prediction error is e wt , the known AC load forecasting error is e acl , the known DC load forecasting error is e dcl . According to the photovoltaic pow...

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Abstract

A test scenario simulation method for a distributed renewable energy system with mixed AC and DC, including four steps of scenario combination, scenario window selection, probability distance calculation, and scenario reduction, and is first initialized before scenario combination. Scenario combinations form an upper limit extreme scenario and a lower limit extreme scenario. Scenario window selection determines the ratio of the number of test scenarios to be selected, that is, the number of test scenarios to be selected is indirectly determined when the total number of samples is certain. The probability distance calculation is to calculate the probability distance of all scenes, which provides an intuitive basis for scene reduction. Scene reduction calculates the photovoltaic power value, wind power value, AC load value, and DC load value of the normal scene in the current period, and then determines the normal scene in the current period.

Description

technical field [0001] The invention relates to a test scene simulation method for a distributed renewable energy system. Background technique [0002] my country's distributed renewable energy is growing rapidly, but currently there are many AC-DC conversion links in renewable energy access technology, which affects the convenience of access and reduces efficiency. The AC-DC hybrid system based on power electronic conversion devices can integrate distributed renewable energy at multiple AC-DC voltage levels, increase control capabilities, and achieve more flexible and secure access. At the same time, it can realize flexible networking of the system and complement each other in a wider range It improves the full consumption and efficient utilization of distributed renewable energy. Therefore, the AC-DC mixed distributed renewable energy system has become one of the important forms of the future power grid. [0003] Since the system architecture, system analysis, design and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06Q50/06G05B23/02G01R31/00G06F111/08
CPCG05B23/02G06Q50/06G01R31/00G06F30/20
Inventor 孔力裴玮张学邓卫李鲁阳黄强付慧潘志新李强黄地戴康
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI