Control requirements:

■ When either of the two high-voltage circuits loses power, the circuit breaker acts, the buscouple closes, and sends a start command to the diesel generator. When both high-voltage circuits lose power, the diesel generator is immediately put into power supply;

When there is a fault in one transformer or one circuit, non guaranteed disconnection is required to protect the primary load and important secondary load;

Priority protection for fire protection;

Emergency preparation for UPS power supply, for key laboratory experimental equipment, computer equipment, fire equipment, elevators, and other equipment.

Basic configuration of distribution rooms in university buildings:

According to the hospital's design capacity, configure the number of transformers, the number of high-voltage and low-voltage cabinets, and use power instruments to monitor all incoming and outgoing circuits of low-voltage cabinets, and upload the data to the intelligent distribution system.

According to the scale and requirements of universities, the requirements for intelligent power distribution systems may vary. However, fundamentally, all of them are collected through multi-functional power instruments, uploaded to the upper computer system through communication bus, and processed by professional system software to monitor and control the intelligent building.

From a structural perspective, the intelligent power supply and distribution system can be divided into three layers: on-site I/O, communication management layer, and central control layer. Among them, the control layer is the control core of the entire system, monitoring and controlling the operation of the power supply system, and can also be used for human-machine dialogue interface, data processing, and storage management; On site I/O is used for collecting status signals and operating parameters of on-site equipment, and for controlling and operating on-site equipment.

Two transformers, uninterrupted power supply EPS, UPS, DC screen, and high and low voltage distribution cabinets are usually installed in the distribution room. Usually, power instruments are configured on the distribution cabinet for terminal data collection.

The main functions and system composition of the intelligent power supply and distribution system:

The first level load in the electricity load of universities is relatively small, and only some high-precision instruments in the laboratory need continuous power supply. The load of other buildings is mostly the second and third level load. The air conditioning system equipment in teaching buildings, student dormitories and other places with concentrated electricity consumption need to be managed with emphasis on electricity usage; EPS power supply is required for fire protection.

The basic requirements for the power distribution plan of universities are as follows: monitoring integration, and notifying management personnel and responding promptly in case of emergency situations.