Transformer winding hot-spot temperature forecasting evaluation system with self-adaption function

A transformer winding and hot spot temperature technology, which is applied to thermometers with physical/chemical changes, thermometers, and thermometers with electric/magnetic elements that are directly sensitive to heat, can solve the problem of poor timeliness, poor accuracy, and inability to monitor and analyze transformer temperature. Change trends and other issues to achieve the effect of improving prediction accuracy and high calculation reliability

Active Publication Date: 2014-04-02
ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD
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Problems solved by technology

This data is the value of the winding temperature obtained by simulation, and the winding temperature indicator data obtained by simulation has a deviation from the real winding temperature, which has poor accuracy and poor timeliness
Correlation analysis data shows that there is a lag of about 4...

Method used

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  • Transformer winding hot-spot temperature forecasting evaluation system with self-adaption function

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Embodiment Construction

[0019] figure 1 Shown is the principle structural block diagram of the present invention. It can be seen from the figure that the present invention is a transformer winding hot spot temperature prediction and evaluation system with adaptive function, which includes a transformer top layer oil temperature monitoring system 1, a substation ambient temperature monitoring system 2, a transformer load current monitoring device 3, and a transformer equipment parameter extraction system 4. A transformer winding temperature monitoring system 5 , a transformer winding temperature calculation module 6 and a transformer winding temperature calculation result storage module 7 . The working principle and process of the present invention are: turn on the power supply, turn on the transformer top layer oil temperature monitoring system 1, the transformer load current monitoring equipment 3 and the transformer winding temperature monitoring system 5, save the relevant equipment parameter info...

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Abstract

The invention discloses a transformer winding hot-spot temperature forecasting evaluation system with a self-adaption function. The transformer winding hot-spot temperature forecasting evaluation system mainly comprises seven parts such as a transformer top layer oil temperature monitoring system, a transformer substation environment temperature monitoring system and transformer load current monitoring equipment. The transformer winding hot-spot temperature forecasting evaluation system has the advantages that the temperature change trend after the transformer load increase can be monitored, the coil temperature of a transformer is accurately known in real time, in addition, the temperature change trend of the transformer is forecast, the transformer equipment can be fully utilized for testing the temperature influence after the load capacity increase, and the evaluation means is provided for the overload operation feasibility of an electric network system at the peak period under the condition of not damaging the insulation performance of the transformer equipment.

Description

technical field [0001] The invention relates to the research and application of state evaluation of transformer equipment in a smart grid, in particular to a hot spot temperature prediction and evaluation system for transformer windings. Background technique [0002] The existing transformer winding temperature monitoring method is to install a thermometer on the top of the oil tank of the transformer body, and convert the winding temperature data by measuring the resistivity of the transformer oil at different temperatures. This data is the value of the winding temperature obtained by simulation, and the winding temperature indicator data obtained by simulation calculation has a deviation from the real winding temperature, which has poor accuracy and poor timeliness. Correlation analysis data shows that there is a lag of about 4 to 5 hours between the hot spot temperature inferred from the traditional measurement of transformer oil temperature and the actual hot spot temper...

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Application Information

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IPC IPC(8): G01K7/00G01K11/32G01K11/3206
Inventor 郭丽娟邓雨荣邬蓉蓉张炜陶松梅吴秋丽吕泽承梁俊斌
Owner ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD
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