The high-voltage distribution cabinet is an important equipment in the power system, which is responsible for distributing electric energy from the high-voltage transmission line to the low-voltage user end to ensure the safe and stable operation of the power system. However, due to the harsh working environment of the high-voltage distribution cabinet, it is often affected by unfavorable factors such as high temperature, high humidity and strong electromagnetic field, therefore, it is very important to take effective five prevention measures to ensure the safe operation of the high-voltage distribution cabinet and its peripheral equipment.
Misoperation is one of the main causes of high-voltage distribution cabinet accidents. In order to prevent misoperation, the following measures should be taken:
1.Strengthen staff training, improve employees' safety awareness and operation skills, and ensure that employees are familiar with the operating procedures and precautions of high-voltage distribution cabinets.
2.Set up obvious signs and warnings at the operating parts of the high-voltage distribution cabinet to remind the operator to pay attention to safety.
3.Advanced anti-misoperation operating systems, such as electrical interlocking, mechanical interlocking, etc., are used to ensure that misoperation cannot be carried out when the equipment is in an unsafe state.
Electrical fire is one of the common safety accidents in high-voltage distribution cabinets. In order to prevent electrical fires, the following measures should be taken:
1.Regularly check the insulation performance and temperature of the high-voltage distribution cabinet to ensure that the equipment is in good working condition.
2.A temperature detection device is set inside the high-voltage distribution cabinet, and an alarm signal is sent out in time when the temperature of the equipment is too high, so as to deal with it in time.
3.Use flame-retardant materials and fire protection measures, such as the use of flame-retardant cables, the installation of firewalls, etc., to reduce the risk of electrical fires.
Arc flashover is one of the common electrical faults in high-voltage distribution cabinets. In order to prevent arc flashover, the following measures should be taken:
1.Improve the insulation level of high-voltage distribution cabinets, and use high-performance insulation materials to enhance the insulation performance of equipment.
2.Arc extinguishing devices, such as arc extinguishing covers, arc extinguishers, etc., are set inside the high-voltage distribution cabinet to quickly extinguish the arcs that may be generated.
3.Preventive tests and inspections are carried out regularly to detect and deal with potential electrical faults in a timely manner to prevent the occurrence of arc flashovers.
Lightning hazard is one of the natural disasters faced by high-voltage distribution cabinets. To prevent lightning hazards, the following measures should be taken:
1.Install lightning rods or lightning wires near the high-voltage distribution cabinet to introduce lightning into the ground and avoid lightning directly hitting the equipment.
2.Overvoltage protection devices, such as lightning arresters, surge protectors, etc., are set inside the high-voltage distribution cabinet to limit the damage of lightning overvoltage to the equipment.
3.Regularly check the operating status of the lightning protection device to ensure that it is in good working condition and effectively prevent lightning hazards.
Small animals such as rats and birds may enter the high-voltage distribution cabinet, causing accidents such as short circuits in equipment. In order to prevent small animal damage, the following measures should be taken:
1.Set up anti-rat nets, anti-bird nets and other protective facilities at the entrance and exit of the high-voltage distribution cabinet to prevent small animals from entering the equipment.
2.Regularly inspect and clean up the high-voltage distribution cabinets, and find and deal with the hidden dangers of small animal infringement in a timely manner.
3.Chemicals such as rat repellents and bird repellents are installed around the equipment to reduce the risk of small animals invading the equipment.
To sum up, the five prevention measures of the high-voltage distribution cabinet are an important guarantee to ensure the safe operation of the equipment. By strengthening staff training, regular inspection and maintenance, and adopting advanced technology and management methods, we can effectively prevent the occurrence of safety accidents such as misoperation, electrical fire, arc flashover, lightning hazard and small animal infringement, and ensure the safe and stable operation of the power system.