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Photovoltaic access power distribution network adaptability evaluation method based on quantitative grading index system

An index system and adaptability evaluation technology, applied in data processing applications, information technology support systems, instruments, etc., can solve problems such as resource shortages and environmental pollution, achieve a reasonable and orderly planning process, and promote the effect of increasing scale

Pending Publication Date: 2021-11-05
国网河北省电力有限公司雄安新区供电公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the continuous development of the social economy and the deepening of the development and utilization of energy, the traditional energy consumption structure dominated by fossil energy has strongly supported the current energy supply, but it has inevitably brought about resource shortages and environmental pollution.

Method used

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  • Photovoltaic access power distribution network adaptability evaluation method based on quantitative grading index system
  • Photovoltaic access power distribution network adaptability evaluation method based on quantitative grading index system
  • Photovoltaic access power distribution network adaptability evaluation method based on quantitative grading index system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Example 1: Scenario evaluation with photovoltaic access adaptability

[0044] Select a photovoltaic poverty alleviation grid-connected project in a certain place as the analysis object, and study the evaluation and analysis of the adaptability of the distribution network under the photovoltaic access scenario in this area. figure 1 The flow shown applies the invention as an example of a specific implementation.

[0045] Step 1 to Step 2: Determine the scope of the power grid evaluation area, and collect the basic data of the power grid in the selected area, including power supply data, transformer data, line data, load data, etc.

[0046] The power grid in the area to be evaluated is currently powered by the 10 kV line of the surrounding 35 kV station A, including 4 station areas, respectively, station area A to station area D, and each station area supplies power to users through distribution transformers. The installed photovoltaic power generation capacity of each h...

Embodiment 2

[0058] Example 2: Scenario evaluation without photovoltaic access adaptability but after transformation

[0059] Select a photovoltaic poverty alleviation grid-connected project in a certain place as the analysis object, and study the evaluation and analysis of the adaptability of the distribution network under the photovoltaic access scenario in this area. figure 1 The flow shown applies the invention as an example of a specific implementation.

[0060] Step 1 to Step 2: Determine the scope of the power grid evaluation area, and collect the basic data of the power grid in the selected area, including power supply data, transformer data, line data, load data, etc. The basic data of the selected area are the same as in Example 1.

[0061] Step 3: Calculate the value of each index in the evaluation index system according to the basic data of the power grid. After the 300kWp photovoltaic power generation in this area is connected to the system, the busbar voltages of station ar...

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Abstract

The invention relates to a photovoltaic access power distribution network adaptability evaluation method based on a quantitative grading index system. The method comprises the following steps: step 1, collecting background information and historical data of various photovoltaic power supply power distribution networks accessed and involved in a target network frame of a to-be-evaluated power distribution network for analysis; step 2, extracting key indexes in four aspects of reliability, load rate, short-circuit current and electric energy quality, and constructing an adaptability evaluation system; step 3, performing adaptability evaluation on a distribution network system in a to-be-evaluated planning region by adopting an index score weighting method; step 4, carrying out layering and partitioning; step 5, carrying out regional power grid evaluation; step 6, calculating an adaptability score value of a regional power grid, and obtaining an adaptability evaluation result of the regional power grid according to the adaptability score; and step 7, judging whether photovoltaic access adaptability is possessed or not, and taking corresponding measures. The invention provides an effective tool for assisting planning personnel to reasonably consider installation scale of regional photovoltaics and development planning of a matched power grid.

Description

technical field [0001] The invention relates to the field of adaptability evaluation of photovoltaic power supply projects connected to regional power grids, in particular to a method for evaluating the adaptability of photovoltaic power supply projects connected to distribution networks based on a quantified and graded index system. Background technique [0002] With the continuous development of the social economy and the deepening of the development and utilization of energy, the traditional energy consumption structure dominated by fossil energy has strongly supported the current energy supply, but it has inevitably brought about resource shortages and environmental pollution. . In recent years, the development and utilization of renewable energy such as solar energy has been accelerated, which greatly adapts to the needs of future energy development. With the implementation of the energy development concept of "two substitutions" of clean substitution and electric ener...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/06393G06Q50/06Y04S10/50
Inventor 王帆陈振华康伟娇陈云辉蔡佳铭顾辰方柯慧
Owner 国网河北省电力有限公司雄安新区供电公司
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