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Winding temperature calculation method for fiber temperature controller of transformer

A winding temperature and calculation method technology, which is applied to thermometers, thermometers, and thermometer parts that change physically/chemically, can solve problems such as complicated installation and cumbersome operation, and achieve the goal of simplifying the installation method and improving the calculation accuracy of winding temperature Effect

Inactive Publication Date: 2015-11-18
TAIAN ESTAR INTELLIGENT TECH
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AI Technical Summary

Problems solved by technology

When using this method to measure the temperature of the transformer winding, a rectifier is required to convert the CT current, which is complicated to install and cumbersome to operate

Method used

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  • Winding temperature calculation method for fiber temperature controller of transformer
  • Winding temperature calculation method for fiber temperature controller of transformer
  • Winding temperature calculation method for fiber temperature controller of transformer

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Embodiment Construction

[0042] Below in conjunction with the embodiment, the transformer model SSZ11-180000 / 220, the voltage ratio 230±8×1.25% / 121 / 10.5, and the connection group YNyn0d11 will further describe the present invention. The following examples are intended to illustrate the present invention rather than further the present invention limited.

[0043] In this embodiment, the high-voltage side CT ratio K CT , High voltage side rated current I 2 , The thermal load q corresponding to the minimum tap of the transformer is an important performance parameter of the transformer; the thermal load q corresponding to the minimum tap of the transformer is obtained by calculating the parameters such as the rated current, the number of turns of the high-voltage winding and the spacer The performance parameters of the transformer, the calculation formula of q is as follows:

[0044]

[0045] Wherein, a, c are constant; I 2 is the current at the minimum tap on the high-voltage side, unit A; ρ is the...

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Abstract

The invention relates to a winding temperature calculation method for a fiber temperature controller of a transformer. The method comprises the steps that a) the load current I1 of the transformer is determined; b) the thermal load q1 of the transformer during operation is determined; c) the temperature deltaT of a winding is determined; and d) the winding temperature T is determined. A circuit board is used to data analysis and calculation, a current transformer is directly added to the integrated circuit board for CT current collection, additional arrangement of current transformer and heating capillary is not needed, the installation manner is simplified, calculation is carried out accurately according to performance parameters of the transformer, and the temperature calculation precision of the winding of the fiber temperature controller is improved.

Description

1. Technical field [0001] The patent of the present invention relates to a winding temperature calculation method of an optical fiber temperature controller, especially a winding temperature calculation method of an optical fiber temperature controller used for a transformer. 2. Background technology [0002] The working temperature of the transformer is an important parameter that marks the safety performance of the transformer. The fiber optic temperature controller is an important device for detecting the working temperature of the transformer. Therefore, the winding temperature of the fiber optic temperature controller is an important parameter. [0003] In the existing winding temperature calculation method for the temperature controller of the transformer, the thermal simulation method is used, and the current matching device is used to convert the CT current into a heating current. The heat generated by the heating current on the heating element is used to compensate t...

Claims

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Application Information

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IPC IPC(8): G01K11/32G01K1/20G01R19/00
Inventor 李冬林范国英王加东
Owner TAIAN ESTAR INTELLIGENT TECH
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