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Method for checking phase for voltage transformer by utilizing CAD

A voltage transformer and voltage technology, applied in the direction of instruments, measuring electrical variables, measuring devices, etc., can solve the problems of complex calculation process and easy calculation errors, and achieve the effect of saving fuel consumption, fast acquisition and high accuracy.

Active Publication Date: 2013-10-16
华能景泰热电有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The calculation process of this method is complex and error-prone

Method used

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  • Method for checking phase for voltage transformer by utilizing CAD
  • Method for checking phase for voltage transformer by utilizing CAD
  • Method for checking phase for voltage transformer by utilizing CAD

Examples

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Embodiment Construction

[0029] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0030] The embodiment of the present invention is described below by a specific example:

[0031] Now take a neutral point ungrounded system voltage transformer nuclear phase as an example to introduce in detail the application of phase nuclear with CAD drawing annotation method. figure 1 The transformation ratio of the medium voltage transformer is 20KV / √3 / 100 / √3 / 100 / 3, where YH1 is the primary winding of the voltage transformer, YH2 is the secondary winding of the voltage transformer, and YH3 is the tertiary winding of the voltage transformer.

[0032] Assuming that the phase verification of the secondary winding is correct, check the phase verification of the wiring of the tertiary winding based on the secondary winding. First, draw the vector diagram...

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Abstract

The invention provides a method for checking phase for a voltage transformer by utilizing a CAD. The method comprises: determining the length of each phase through CAD stand based on voltage values of vector diagrams of a reference winding voltage and a winding voltage to be checked by utilizing computer aided design CAD drawing software, and positioning accurate angles between each phase in the vector diagrams through rotating; labeling the vector diagrams of the reference winding voltage and the winding voltage to be checked; putting the vector diagrams of the reference winding voltage and the winding voltage to be checked together through regarding points, which have electrical contacts in a loop, as connection points of the vector diagrams; labeling the length between the two points by using alignment label method and the length is the voltage value between the two points. Through the method, wiring error place can be timely and accurately found in the loop, so that problems can be processed rapidly and delay time of equipment is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of computer software, in particular to a method for phase verification of voltage transformers by using CAD. Background technique [0002] After the transformer is newly put into operation or the primary and secondary circuits change during operation, the correctness of the wiring can be verified through the phase verification of the voltage transformer. Therefore, the phase verification of the voltage transformer is the last line of defense to ensure the normal operation of the transformer. . The correctness of voltage loop wiring directly affects the correct action or reflection of protection, automatic devices, and electrical measuring instruments. [0003] At present, the verification phase of voltage transformer is mainly to draw the vector diagram of the reference voltage transformer winding and the vector diagram of the approved voltage transformer winding on the same plane, and then connect the poin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/02
Inventor 康尚英王远忠薛守武孙万荣张兴荣巴好成安正峰毛晓莉白小平冯宜焕李健萍马永亮马学申吕庆庆杨斌王守燊王洋马铁军朱芮漪张国平
Owner 华能景泰热电有限公司