Distributed power supply acceptance capability uncertainty analysis method and device, and medium

A distributed power and uncertainty technology, applied in circuit devices, photovoltaic power generation, electrical components, etc., can solve problems such as optimistic and difficult to quantify the uncertainty of distribution network, and achieve easy access, theoretical value and practice. Significant, high-performance effects

Pending Publication Date: 2021-11-12
RES INST OF ECONOMICS & TECH STATE GRID SHANDONG ELECTRIC POWER +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the conservatism of the robust method is usually only aimed at the uncertainty of the distributed generation output and load demand, and it is difficult to quantify the potential uncertainty of

Method used

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  • Distributed power supply acceptance capability uncertainty analysis method and device, and medium
  • Distributed power supply acceptance capability uncertainty analysis method and device, and medium
  • Distributed power supply acceptance capability uncertainty analysis method and device, and medium

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Effect test

Embodiment 1

[0063] An embodiment of the present application provides a method for analyzing the uncertainty of the capacity of distributed power generation, including:

[0064] According to the three-phase load Jacobian matrix, the three-phase voltage sensitivity equation of the node voltage amplitude variation vector of each phase to the node active injection power variation vector and node reactive injection power variation vector of the corresponding phase is obtained;

[0065] In the specific implementation process, according to the three-phase load Jacobian matrix shown in formula (1), the node voltage phase angle variation vector of the corresponding phase is eliminated to obtain the node voltage amplitude variation vector and the node active injection power variation vector of the corresponding phase and the three-phase voltage sensitivity equation of the node reactive power injection power variation vector, as shown in formula (2):

[0066]

[0067]

[0068] In the formula: ...

Embodiment 2

[0109] An embodiment of the present application provides a device for analyzing the uncertainty of the capacity of a distributed power supply, including: a processing unit, a storage unit, an input unit, a display unit, and a bus unit, and the bus unit is connected to the processing unit and the storage unit , the input unit and the display unit, the storage unit stores instructions and operands, and the processing unit executes the instructions to process the operands to realize the method for analyzing the uncertainty of the acceptance capacity of distributed power sources; the functions of the input unit include distribution Inputting the operands of the method for analyzing the uncertainty of the receiving capacity of the distributed power source, the function of the display unit includes displaying the analysis results of the method for analyzing the uncertainty of the receiving capacity of the distributed power source.

Embodiment 3

[0111] An embodiment of the present application provides a storage medium for implementing the method for analyzing the uncertainty of the acceptance capacity of distributed power sources. The storage medium for implementing the method for analyzing the uncertainty of the capacity for distributed power sources stores at least one instruction, and reads and executes the instruction The method for analyzing the uncertainty of the capacity of distributed power generation is realized.

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Abstract

The invention provides a distributed power supply acceptance capability uncertainty analysis method and device, and a medium. The mapping relation between the multivariate uncertainty factors and the voltage sensitivity in the power distribution network of the distributed power supply is quantified by adopting interval mathematics and affine mathematics, so that the method has the advantages that upper and lower bounds of uncertain variables of an interval method are easy to obtain, the model is simple, the applicability is high, the solving speed is high and the like; the method also has the advantages of the affine method in the aspect of tracking the correlation and coupling of multivariate uncertain variables; the affine three-phase voltage sensitivity equation based on the Jacobian matrix is deduced, and the random scene simulation method based on Monte Carlo is combined, so that the accuracy and rapidity of the acceptance capability analysis of the distributed power supply of the power distribution network are considered; and meanwhile, the possibility is provided for assisting distribution network planners to carry out on-line rapid analysis and comprehensive and accurate decision-making on the acceptance capability of the distributed power supply. Compared with an existing distributed power supply acceptance capability analysis method, the method has better performance effects and remarkable theoretical value and practical significance.

Description

technical field [0001] The present application relates to the field of distribution network planning, and in particular to a method, device and medium for analyzing the uncertainty of the receiving capacity of distributed power sources. Background technique [0002] Today's increasingly serious environmental pollution and energy crisis continue to promote the development and utilization of renewable energy such as solar energy and wind energy in countries around the world. Under this background, various renewable energy sources will be connected to power distribution in the form of distributed power sources on a large scale There is a certain intermittency in the distributed power supply, which will cause many problems in the safe operation of the distribution network, and pose a great challenge to the efficient acceptance and utilization of distributed power. [0003] At present, scholars at home and abroad have carried out many studies on the analysis methods of distribute...

Claims

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Application Information

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IPC IPC(8): H02J3/38H02J3/48H02J3/50G06F30/18
CPCH02J3/381H02J3/48H02J3/50G06F30/18H02J2300/24H02J2300/28G06F2111/02G06F2113/04G06F2111/10Y02E10/56
Inventor 李文升吴健郑志杰杨波崔灿杨扬梁荣綦陆杰刘辉李昭王延朔贾冬雪王耀雷邓少治刘钊李昊赵韧张雯刘淑莉杨慎全李凯张博颐
Owner RES INST OF ECONOMICS & TECH STATE GRID SHANDONG ELECTRIC POWER
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