A New Speed ​​Measuring Device for Circuit Breaker

Abstract

The invention discloses a novel speed measuring device for a circuit breaker, comprising a reflective plate, wherein a movement rod is detachably connected to the reflective plate, an angle exists between the reflective plate and the movement rod, and one side of the reflective plate is provided with a A support seat, the upper surface of the support seat is parallel to the reflector, the upper surface of the support seat is vertically arranged with no less than two laser emitters, and the distance between two adjacent laser emitters is not greater than the length of the reflector , each of the laser transmitters is provided with a laser signal receiver, and the laser signal receiver is connected with a data processing unit through a wire; the present invention is simple in structure, convenient in operation, and can measure without contacting the circuit breaker. It is stable, has high measurement accuracy, and can be applied to the speed measurement of circuit breakers of various specifications and various movement rod lengths.

Description

technical field [0001] The invention relates to the technical field of speed measurement, in particular to a novel speed measurement device for a circuit breaker. Background technique [0002] The circuit breaker has a complete arc extinguishing structure and sufficient current breaking capacity, and can automatically cut off the overload current and short-circuit current. It is widely used in the power system and is an important part of the modern smart grid; the opening and closing speed of the circuit breaker directly affects Its own arc extinguishing ability and operational reliability are important reference indicators for evaluating the performance of circuit breakers, so the measurement of the opening and closing speed of circuit breakers is very important; at present, the speed sensor technology and sampling calculation technology are relatively mature. The switch characteristic tester with the speed measuring function module has been widely used in the maintenance t...

AI Technical Summary

Problems solved by technology

[0002] The circuit breaker has a complete arc extinguishing structure and sufficient current breaking capacity, and can automatically cut off the overload current and short-circuit current. It is widely used in the power system and is an important part of the modern smart grid; the opening and closing speed of the circuit breaker directly affects Its own arc extinguishing ability and operational reliability are important reference indicators for evaluating the performance of circuit breakers, so the measurement of the opening and closing speed of circuit breakers is very important; at present, the speed sensor technology and sampling calculation technology are relatively mature. The switch characteristic tester with the speed measuring function module has been widely used in the maintenance test of the substation equipment, but most of the speed measuring devices are directly connected with the circuit breaker, and the measured value is unstable due to vibration during the opening and closing process of the circuit breaker , and because the moving rod inside the circuit breaker is short and the moving speed is fast, it is inconvenient to measure the speed and increase the error value. Therefore, there is an urgent need for a high-precision speed measuring device that has little vibration influence and can enlarge the measurement base

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