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Transformer protection tripping matrix inspection device

A transformer protection and inspection device technology, which is applied in the fields of bus differential protection, line protection, and transformer protection, can solve problems such as threats to power grid security, reduce labor intensity, shorten debugging time, and improve efficiency

Active Publication Date: 2012-01-18
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

When the transformer fails, the transformer protection realizes the outlet trip through the trip matrix. It can be seen that an error in the trip matrix will cause serious consequences and threaten the safety of the power grid.

Method used

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  • Transformer protection tripping matrix inspection device
  • Transformer protection tripping matrix inspection device
  • Transformer protection tripping matrix inspection device

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Embodiment Construction

[0022] The invention provides a transformer protection tripping matrix inspection device, which analyzes the correctness of the transformer protection tripping matrix by summarizing the protection action contacts of the transformer protection on the device and observing the lighting sequence and number of light-emitting diodes on the panel of the device. In-depth development of the timing module realizes the function of displaying the action time of the protection action contact. While ensuring the accuracy of the trip matrix detection results, it is more visual and intuitive to realize the monitoring of the trip matrix detection results, and finally realizes the need to simplify the operation process and reduce the workload. Improve the transformer Work efficiency of protection trip matrix detection.

[0023] The matrix correctness detection module principle of the present invention is as follows figure 1 As shown, after the protection action contact K is connected in series ...

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Abstract

The invention discloses a transformer protection tripping matrix inspection device, which comprises a tripping matrix correctness detection module and a protection action contact opening time detection module, wherein the tripping matrix correctness detection module comprises an indicating device; the indicating device is used for indicting closing of the protection action contact of a transformer protection tripping matrix; the protection action contact opening time detection module comprises a timer; the timer is used for calculating protection action contact opening time of the transformerprotection tripping matrix; when a protection action contact of the transformer protection tripping matrix is closed, the timer is stopped; and a fault stimulation device is used for providing a fault signal for the protection action contact opening time detection module and starting the timer when a fault signal is sent out. Through the device, the working efficiency is increased, the labor intensity of working personnel is reduced, and reliable guarantee is provided for smooth production.

Description

technical field [0001] The invention relates to transformer protection, bus differential protection and line protection, in particular to inspection of transformer protection tripping matrix. Background technique [0002] The transformer protection device is an important device for quick tripping and fault removal to ensure safe and stable operation of the transformer when a transformer fails. When the transformer fails, the transformer protection realizes the outlet trip through the trip matrix. It can be seen that the error of the trip matrix will cause serious consequences and threaten the safety of the power grid. [0003] There was an accident in Guangdong Power Grid that 220kV substation tripping matrix error caused 10kV substation backup self-switching to malfunction, and 10kV surge arrester burst. The self-injection malfunction is caused by not receiving the blocking signal from the low backup protection of the transformer. After consulting the transformer protecti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00G01R31/327
Inventor 赵康伟朱江峰李铁岭张兴周田华张海波
Owner STATE GRID CORP OF CHINA
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