What are the characteristics of electrical engineering in high-rise buildings?

What kinds of electrical equipment are there?

High-rise buildings, such as high-class hotels, commercial and residential buildings, must be equipped with relatively perfect facilities that can meet various functions, such as air conditioning system, water supply and drainage system, etc., so that they have a good hardware service environment. Therefore, there are many types of electrical equipment in separated buildings. ?

High dose and high load density?

Because there are many electrical equipments in high-rise buildings, especially the air conditioning load, which accounts for about 40%-50% of the total electricity load, generally speaking, high-rise buildings consume a lot of electricity and have high load density. The load density of general high-rise buildings, such as high-rise tourist hotels, high-rise commercial and residential buildings, high-rise office buildings and high-rise integrated oranges, is above 60W/m2, and some of them are as high as 150W/m2. Even for high-rise residential buildings or business trips, the load density is 10W/m2, and some of them reach 50W/m2.

High requirements for power portability?

The power load in high-rise buildings is mostly secondary load, such as the capacity of Buddhist instruments in high-rise buildings, the power of domestic pumps, and the lighting of hotel rooms. Part of it is the first-class load, such as the computer system of the hotel, the main electricity and lighting of the electric deep courtyard, the telephone network of high-rise buildings, and the fire-fighting electricity of the first-class fire-proof buildings. Therefore, high-rise buildings have higher requirements for power supply, and generally need more than two high-voltage batteries. In order to meet the power supply reliability requirements of the first-class load, in many cases, it is necessary to set the carbon frame oil generator set (or gas turbine generator set) as the backup power supply. ?

Complex electrical system?

Sub-high-rise buildings have complex functions, many types of electrical equipment, many power supply loads and high precision requirements, which inevitably make the electrical system of high-rise buildings very complicated. Except for many electrical subsystems, each subsystem has a high degree of complexity. For example. For the power supply system, in order to ensure the reliability of power supply to the primary negative power supply, in addition to taking two-way electrical probes or two-way switching measures on the high and low voltage main tie lines of the substation, it is also necessary to consider the start-up and input switching of the self-provided emergency oil-saving generator. For example, for the fire quotation and linkage control system, due to the large number of detection points and linkage control equipment, the system is large. ?

Many wires?

The electrical system is complex and there are many electrical lines. There are not only high-voltage power supply lines and low-voltage distribution lines, but also fire alarm and fire fighting linkage lines, audio broadcasting lines, communication lines and so on. ?

How many electrical rooms are used?

Complex electrical system will put forward more requirements for electrical room. For example, in order to balance the power supply depth, in addition to the basement and the ground floor, substations are sometimes set up on the top or middle floor of buildings. Telephone station, voice control room, fire control center, monitoring center, etc. All live in specific rooms. In addition, in order to solve the vertical shielding problem of various electrical lines. As well as the distribution of trunk lines to floors, electric shafts and small electric boxes must be set up.

High degree of automation?

High-rise buildings have many functions, many equipments, and high power consumption. In order to reduce energy consumption, reduce the cost of equipment maintenance and update, prolong the service life of equipment and improve the management level, this requires automatic management of equipment in high-rise buildings, and comprehensive automatic monitoring, control and management of the operation, safety, energy consumption and energy saving of all kinds of equipment to achieve optimal control and management of equipment. Especially the application of forest table and optical fiber communication technology, and people's desire for information society, high-rise buildings are developing rapidly in the direction of powder automation, energy saving, informationization and potassium utilization.