A high-voltage switch cabinet with a voice alarm device

Abstract

The invention relates to a high-voltage switchgear with a voice alarm device, and relates to a high-voltage device in a transformer station in the field of electric power. The high-voltage switchgear comprises the voice alarm device and a circuit breaker installed outside a high-voltage distribution chamber. The circuit breaker comprises an operating mechanism, an auxiliary contact and a switch contact. The voice alarm device comprises a power source, a power switch, an infrared induction module, and a safety notification module, a high-voltage alarm module and a high-voltage detection module which are connected with the infrared induction module. The auxiliary contact of the circuit breaker is connected with the power switch of the voice alarm device. The high-voltage detection module is connected with the switch contact of the circuit breaker through a switch line. The high-voltage detection module is connected with a high-voltage alarm module and the safety notification module. The safety notification module and the high-voltage alarm module are respectively connected with a speaker. According to the invention, an operator can be prevented from walking to wrong intervals, whether equipment is live-line after the circuit breaker is broken can be detected, and in case of electricity, an alarm is given so as to prevent the operator from switching on a knife with a load.

Description

technical field [0001] The invention relates to high-voltage equipment in a substation in the electric power industry. Background technique [0002] In a substation, when it is necessary to perform knife switch operation on the high-voltage distribution switchgear (also known as high-voltage switchgear), the staff first go outdoors, pull the operating mechanism of the circuit breaker of the high-voltage switchgear of the substation to the disconnected position, and then go to the high-voltage distribution switchgear. The electric room operates the knife switch. The high-voltage switchgears are similar in shape. Multiple high-voltage switchgears are neatly arranged in the high-voltage switchgear room to form intervals. If you do not carefully identify the high-voltage switchgear operating area, it is easy to go to the wrong interval. If the staff enters the charged interval by mistake, Thereby feeling, getting an electric shock or operating live lines can easily lead to majo...

AI Technical Summary

Problems solved by technology

Multiple voice sirens can work as long as they sense the human body. If the sensing range is too large and the sensing ranges of different sirens overlap, it is likely that multiple sirens will sound at the same time; Early warning when the human body is within the safe range of the device

In this way, it is impossible to directly guide the staff to enter the interval that needs to be operated, and when it is necessary to perform a knife switch operation on the high-voltage equipment that has been switched off, the voice alarm cannot give an early warning of whether the equipment is live.

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