11KV medium and low voltage prefabricated substation
Descriptions
A 11KV medium and low voltage prefabricated substation is an integrated power equipment that usually includes power transformers, high-voltage and low-voltage switchgear, control equipment, internal connections, auxiliary equipment and circuits, etc. This substation is designed to meet specific use conditions, rated values, design and structural requirements, and complies with the national standard "Prefabricated High-voltage/Low-voltage Substations" (GB/T 17467-2020).
The main function of 11KV medium and low voltage prefabricated substation is to convert high-voltage electrical energy into suitable low-voltage electrical energy for user use, and to realize the transmission, distribution and conversion of electrical energy. They can be installed in outdoor public places, residential areas or private houses, and need to ensure that power supply personnel can enter and exit at any time for maintenance.
The composition of the substation mainly includes primary equipment and secondary equipment. Primary equipment involves equipment that directly produces, transmits, distributes and uses electrical energy, such as transformers, high-voltage circuit breakers, etc.; secondary equipment includes equipment that measures, monitors, controls and protects the primary equipment and system operating conditions, such as relay protection devices, automatic devices, measurement and control devices, etc.
The structural design and equipment layout of the substation should meet the requirements of safety, easy operation, convenient maintenance and expansion. For example, the interior arrangement should be compact and reasonable, and the doors of the low-voltage and high-voltage distribution rooms, capacitor rooms, and transformer rooms should open outwards and be equipped with facilities to prevent rain, snow, and animal intrusion.
In addition, routine inspections and checks at substations are effective measures to ensure the safe and normal operation of equipment. Regular inspections can help understand the operating conditions of equipment and promptly detect and handle abnormalities. The establishment of technical archives is also an important part of substation management, including manufacturers' operation manuals, out-of-plant test records, and installation and handover records.
The application and development of intelligent substation technology has brought higher levels of automation and intelligence to substations. Intelligent substations achieve automation, coordinated action, and online assisted analysis through advanced automated data collection and feedback systems. This includes using intelligent camera technology to monitor and record the operating state and fault information of equipment, achieving the visualization of equipment operation and the imagination of substation operation, as well as monitoring the load status and equipment life of various equipment.
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