Automatic judgment method for over-load operational feasibility of transformer

A technology of automatic judgment and transformer, which is applied in the direction of instruments, measuring electric variables, measuring devices, etc., to achieve the effect of high reliability

Active Publication Date: 2013-01-16
SHANGHAI MUNICIPAL ELECTRIC POWER CO +2
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Problems solved by technology

[0003] The purpose of the present invention is to overcome the above-mentioned defects in the prior art and provide a method for automatically judging the feasibility of transform...

Method used

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  • Automatic judgment method for over-load operational feasibility of transformer

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Embodiment

[0024] like figure 1 As shown, a method for automatically judging the feasibility of transformer overload operation, the transformer is set in the substation, the substation is also equipped with a micro-weather station and a SCADA system, the transformer is connected with a cooling fan, the The method includes the following steps:

[0025] 1) Obtain the meteorological data of the environment where the transformer is located, the equipment parameters of the transformer and the operating state data of the transformer, the meteorological data are provided by the micro-weather station, and the operating state data of the transformer include top oil temperature and load current;

[0026] 2) According to the data obtained in step 1), the transformer hot spot temperature is calculated by the thermal circuit calculation model;

[0027] 3) Carry out pre-cooling analysis, overload analysis and heat dissipation analysis of the transformer according to the hot spot temperature of the tr...

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Abstract

The invention relates to an automatic judgment method for over-load operational feasibility of a transformer. The method comprises the following steps of: (1) acquiring meteorological data of an environment where the transformer is positioned, equipment parameters of the transformer and operation state data of the transformer; (2) calculating hot spot temperature of the transformer through a thermal circuit calculation model according to data acquired in the step (1); (3) performing pre-cooling analysis, over-load analysis and radiating analysis on the transformer according to the hot spot temperature of the transformer; (4) acquiring operation current of a switching circuit, performing distribution calculation on the operation current and judging whether switching operation current exceeding an upper limit value exists; (5) analyzing the state of the transformer according to the operation state of the transformer; and (6) judging whether over-load operation of the transformer is feasible according to an analysis result. Compared with the prior art, the method has the advantages of high reliability, capability of effectively solving the problem that whether the transformer in production and scheduling of a power grid is allowed to operate in an over-load state, and the like.

Description

technical field [0001] The invention relates to a method for processing status data of power transformation equipment, in particular to a method for automatically judging the feasibility of transformer overload operation. Background technique [0002] With the development of the national economy, the contradiction between the development of power supply capacity and the growth of actual demand in some areas has become increasingly apparent. In order to actively cope with this situation, many technologies such as increasing the operating temperature, short-term dynamic capacity increase, and new heat-resistant lines have been widely used in the power grid system, which greatly improves the power transmission capacity of the line, and the supporting equipment in the substation is Technical transformation is generally adopted, that is, to match the transmission capacity of the line through overall replacement, so as to meet the power supply demand to the greatest extent. While...

Claims

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Application Information

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IPC IPC(8): G01R31/00
Inventor 傅晨钊魏本刚李红雷
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
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