Laser range extending method and system for testing rigid opening speed and rigid closing speed of high-voltage switch

Abstract

The invention discloses a laser range extending method for testing the rigid opening speed and rigid closing speed of a high-voltage switch, and the method solves the problems of high precision and low measurement range of a laser speed measurement sensor, is realized by refitting the range extending method, and can realize large-range measurement while keeping high precision. Meanwhile, the non-contact measurement mode of the original laser speed measurement sensor is kept, the test problem under the condition that the speed measurement directions of the laser sensor and the high-voltage switch are inconsistent is further solved, and a powerful test tool is provided for the high-voltage switch.

Description

technical field [0001] The invention relates to the technical field of power equipment measurement, in particular to a laser range-extending method for testing the just-off speed and just-on speed of a high-voltage switch, and also relates to a system. Background technique [0002] In the power grid, if the just-opening speed and just-closing speed of the high-voltage switch cannot meet the relevant requirements, the high-voltage switch may fail. Fast, easy to cause mechanical failure. If the speed of just closing is too fast, it will easily cause damage to the contacts. If the speed of just closing is too slow, the contacts will be seriously burned. However, existing sensors such as linear resistance speed sensors, rotary resistance sensors, and rotary encoder sensors are often impossible to install As for the switch body, there are also the following disadvantages: 1. It is difficult to fix the connection between the sensor and the moving part of the switch body, or even ...

AI Technical Summary

Problems solved by technology

[0002] In the power grid, if the opening speed and closing speed of the high-voltage switch cannot meet the relevant requirements, the high-voltage switch may fail. Fast, easy to cause mechanical failure

If the speed of just closing is too fast, it will easily cause damage to the contacts. If the speed of just closing is too slow, the contacts will be seriously burned. However, existing sensors such as linear resistance speed sensors, rotary resistance sensors, and rotary encoder sensors are often impossible to install As for the switch body, there are also the following disadvantages: 1. It is difficult to fix the connection between the sensor and the moving part of the switch body, or even impossible to connect; 2. Due to the fast moving part of the high-voltage switch, the sensor is damaged quite frequently; 3. The sensor is bulky , small space is easy to hit the switch body and cause accidents

[0003] Due to the fast speed of the high-voltage switch and the large range of motion, the CCD laser receiver, the core component of the ordinary laser speed sensor, will face the problem of large measurement range, low precision, small measurement range and high precision, but it is not applicable.

[0004] In this regard, the present invention intends to propose a range-extending method, especially a laser range-extending method for testing the just-off speed and just-on speed of a high-voltage switch, which can solve the contradiction between measurement range and accuracy

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