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A determination method for main transformer capacity demand in power supply area based on substation load level

A technology of main transformer capacity and judgment method, which is applied to electrical components, circuit devices, AC network circuits, etc., and can solve problems such as lack of decision-making basis

Active Publication Date: 2019-05-10
RES INST OF ECONOMICS & TECH STATE GRID SHANDONG ELECTRIC POWER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the load-capacity ratio is within the value range, there is a lack of decision-making basis for prioritization of whether new or expanded substations are needed or included in the planning project reserve.

Method used

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  • A determination method for main transformer capacity demand in power supply area based on substation load level
  • A determination method for main transformer capacity demand in power supply area based on substation load level
  • A determination method for main transformer capacity demand in power supply area based on substation load level

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Embodiment Construction

[0022] A method for judging the capacity demand of a main transformer in a power supply area based on the load level of a substation, comprising the following steps:

[0023] (1) Obtain substation load m k , the configured number of main transformers in operation in the substation n k , the capacity of a single main transformer in the substation s i , to get the running status g(m k ,n k ), g(m k ,n k )=0, the operating state of the substation is no-load substation; g(m k ,n k )=1, the operating state of the substation is a substation with light load; g(m k ,n k ) = 2, the operating state of the substation is a substation with moderate load; g(m k ,n k ) = 3, the operating state of the substation is a substation with heavy load; g(m k ,n k ) = 4, the operating state of the substation is an overloaded substation;

[0024] (2) According to the operating state of the substation in the power supply area, the operating state y of the substation in the power supply area...

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Abstract

The invention discloses a determination method of capacity demand of main transformers in a power supply region based on transformer load levels. The method comprises steps of investigating operation states of each transformer station included in a power supply region, wherein the operation states of each transformer station are obtained according to the main transformer quantity, transformer station load and capacity of single main transformer; and obtaining judgment about whether transformer stations need to be expanded or whether the transformer stations need to be listed into a reserve warehouse of a planned project in the power supply region whose capacity-load ratio is within a value range by combining the growth rate function of annular load of transformer stations in the power supply region and giving out a quantitative determination method.

Description

technical field [0001] The invention relates to a method for judging the capacity demand of a main transformer in a power supply area based on the load level of a transformer substation. Background technique [0002] Whether new or expanded main transformer capacity is needed in the power supply area is generally determined according to the capacity-load ratio. The capacity-to-load ratio is defined as the ratio of the total capacity of substation equipment to the corresponding total load in a certain power supply area. According to different stages of economic growth and social development, the corresponding capacity-load ratio also has a certain value range, as shown in the table: [0003] Each voltage level becomes the selection range of capacity-to-load ratio [0004] Load growth slower growth medium growth Faster growth Average annual load growth rate less than 7% 7％～12％ greater than 12% 500kV and above 1.5～1.8 1.6～1...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00G06Q10/06G06Q50/06
CPCG06Q10/06315G06Q50/06H02J3/00H02J2203/20
Inventor 田鑫李雪亮牟宏汪湲赵龙王艳王飞刘晓明曹相阳魏鑫高效海张丽娜赵光锋付一木
Owner RES INST OF ECONOMICS & TECH STATE GRID SHANDONG ELECTRIC POWER