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A multi-dimensional and multi-resolution modeling and analysis method for power distribution system

A power distribution system, multi-resolution technology, applied in the direction of electrical digital data processing, software simulation/interpretation/simulation, special data processing applications, etc., can solve the problem that the dynamic characteristics of the power distribution system cannot be fully reflected, and the simulation efficiency and quality are low and other issues to achieve the effects of easy understanding, improved relevance and contrast, and reduced complexity

Active Publication Date: 2016-12-28
STATE GRID CORP OF CHINA +1
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Problems solved by technology

[0007] In the above-mentioned conventional power flow calculation model, the active and reactive powers of internal power sources and loads are in the form of fixed and specific named values ​​or per unit values, which cannot fully reflect the dynamic characteristics of the power distribution system, and the simulation efficiency and low quality

Method used

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  • A multi-dimensional and multi-resolution modeling and analysis method for power distribution system
  • A multi-dimensional and multi-resolution modeling and analysis method for power distribution system
  • A multi-dimensional and multi-resolution modeling and analysis method for power distribution system

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Embodiment

[0090] Taking the analysis of voltage fluctuation characteristics as an example below, the technical solution of the present invention is described as follows:

[0091] The voltage distribution characteristics of the power grid are determined by its power flow distribution. Once the distributed power injection power and load consumption power in the distribution network containing distributed The root cause is the variation of distributed power sources and loads. At the same time, the layout of the power distribution system containing distributed power is different, and the voltage fluctuation of the nodes will also change. The layout conditions discussed here are divided into two aspects: one is the layout of the power distribution system itself, which needs to consider different voltage levels The interaction and influence between the power grid and different feeders; the second is the layout of distributed power in the power grid, mainly including the type, number, access l...

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Abstract

The invention relates to a modeling and analysis method in the field of electrical power system modeling and simulating, in particular to a power distribution system multi-dimensional multi-resolution modeling and analysis method. According to the power distribution system multi-dimensional multi-resolution modeling and analysis method, one or more standard values are selected, the multi-dimensional resolution of a model is composed of parameters such as the percentage of the internal power capacity to the standard value (the internal power capacity percentage for short) and the percentage of a load to the standard value (the load capacity percentage for short), then conventional models of the current, the voltage, the line losses and the like are shown in the multi-dimensional resolution mode, a plurality of resolution modes are formed along with changes of the resolution, accordingly, a multi-dimensional multi-resolution model is built, and finally electrical characteristics such as the current, the voltage and the line losses in the system are analyzed based on the model. According to the power distribution system multi-dimensional multi-resolution modeling and analysis method, the multiple models with different resolutions are mutually connected in a joint environment, dynamic characteristics in a power distribution system are jointly reflected from multiple angles and multiple layers, and accordingly the simulating efficiency and the simulating quality are improved.

Description

technical field [0001] The invention relates to a modeling analysis method in the field of power system modeling and simulation, in particular to a multi-dimensional and multi-resolution modeling and analysis method for a power distribution system. Background technique [0002] Multi-resolution modeling, also known as multi-granularity modeling, its basic idea is to establish models of different resolutions in a simulation application, including models of different resolutions of the same system, and they interact and coordinate to complete specific In order to achieve the purpose of improving the fidelity of simulation or improving the efficiency of simulation, it is helpful for people to fully understand objective things from different levels and different angles. Among them, the resolution of the model refers to the minimum granularity of the entity described by the model and the level of detail of the attributes, behavior, input, and output of the entity described by the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q50/06G06F17/50G06F9/455
CPCY02E60/00
Inventor 盛万兴宋晓辉赵珊珊孟晓丽史常凯高菲李雅洁冯雪平
Owner STATE GRID CORP OF CHINA
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