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Power distribution network planning method giving consideration to load sensitivity grading and probabilistic loss

A distribution network planning and sensitivity technology, applied in the direction of instruments, data processing applications, forecasting, etc., can solve problems such as the inability to meet the needs of load development, the planning model is not accurate enough, and the impact of sensitive load planning is not considered. The effect of improving the planning scheme and increasing the accuracy

Active Publication Date: 2018-04-06
CHINA SOUTH POWER GRID ELECTRIC POWER RES INST +1
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Problems solved by technology

[0004] In the literature on sensitive loads, most studies are aimed at the evaluation of the sensitivity of sensitive loads and the impact of voltage sag on sensitive loads, and do not consider the impact of voltage withstand capacity of sensitive loads on power distribution. Influenced by network planning, the planning model is not accurate enough
In the long run, the existing network frame planning scheme will not be able to meet the needs of future load development

Method used

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  • Power distribution network planning method giving consideration to load sensitivity grading and probabilistic loss
  • Power distribution network planning method giving consideration to load sensitivity grading and probabilistic loss
  • Power distribution network planning method giving consideration to load sensitivity grading and probabilistic loss

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Embodiment Construction

[0021] The derivation process of the technical solution of the present invention is introduced below, and embodiments are used to verify the derivation result.

[0022] 1.1 The failure probability of sensitive load-the calculation of voltage amplitude curve

[0023] Different sensitive loads have their own sensitivity and different voltage tolerance curves. The voltage tolerance of sensitive loads will change with time and space. Through simulation experiments, the voltage tolerance of various sensitive loads can be obtained. Curve, there have been many studies on the sensitivity of sensitive loads to voltage sags. The voltage tolerance curve (VTC curve) of sensitive equipment is as figure 1 Shown. Where U min , U max They are the minimum and maximum voltage sag amplitudes that can cause probabilistic losses to sensitive loads, T min , T max They are the minimum and maximum sag durations that can cause probabilistic losses to sensitive loads. When U>U max Or T min When U mi...

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Abstract

The invention discloses a power distribution network planning method giving consideration to load sensitivity grading and probabilistic loss. The method gives consideration to the load loss caused byvoltage fluctuation in a power distribution network model, and a new target function is constructed. The method improves the precision of a planning model, improves the planning scheme of a power distribution network, and meets the demands of the future load development.

Description

Technical field [0001] The present invention relates to the technical field of distribution network planning, in particular to a distribution network planning method considering load sensitivity classification and its probabilistic loss. Background technique [0002] As the distribution network planning mainly considers economic factors, paying attention to the reduction of network cost and network loss, the existing technology uses load loss cost as an indicator to evaluate the reliability of the distribution network, but this indicator cannot be quantified. , The evaluation is not accurate enough, and the load in the distribution network is not considered. Some devices are not affected by voltage sags, such as incandescent lamps, while some devices may not work properly. For this kind of load equipment in the distribution network, if the voltage changes or sudden changes will cause it to fail to work or function decline, this type of load is called sensitive load or sensitive ...

Claims

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Application Information

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IPC IPC(8): G06Q10/04G06Q10/06G06Q50/06
CPCG06Q10/04G06Q10/0631G06Q10/0637G06Q50/06
Inventor 周保荣杜兆斌赵文猛赵芳姚文峰邵传雍
Owner CHINA SOUTH POWER GRID ELECTRIC POWER RES INST
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