電氣外文文獻(xiàn)及翻譯---高層建筑供配電系統(tǒng)設(shè)計(jì)

1、Power supply system of high-rise building design Abstract: With the continuous development of city size, more and more high-rise buildings, therefore, high-rise building electrical design to the designers had to face. In

2、 this paper, an engineering example, describes the electrical design of high-rise buildings and some of the more typical issues of universal significance, combined with the actual practice of an engineering solution to t

3、he problem described. Key words: high-rise building; electrical design; distribution; load calculation 1 Project Overview The commercial complex project, with a total construction area of 405570m2, on the ground floor ar

4、ea of 272330m2, underground construction area of 133240m2, the main height of 99m. Project components are: two office buildings, construction area is 70800m2, 28 layers, the standard story is 3.2m. 2 Load Calculation 1)

5、Load characteristics: electric load, much larger than the “national civil engineering technical measures“ Large 120W/m2 indicators, especially in the electricity load more food, and different types of food and beverage c

6、atering different cultural backgrounds also high. 2) the uncertainty of a large load, because the commercial real estate rents are often based on market demand, and constantly adjust the nature of the shops, making the l

7、oad in the dynamic changes. 3) There is no specification and technical measures in the different types of commercial projects refer to the detailed parameters of the shops, engineering design load calculation in the lack

8、 of data, in most cases to rely on staff with previous experience in engineering design calculations. Load the selection of parameters: for the above problems, the load calculation, the first developer of sales and good

9、communication, to determine the form of layers of the forms and nature of floor area, which is calculated on the basis of electrical load basis; followed to determine parameter index within the unit area of shops is also

10、 very important and complex because there is no clear indicator of the specification can refer to; and different levels of economic development between cities is not balanced, power indices are also different; will be in

11、 the same city, different regions have different consumer groups . 3) the need to factor in the choice: parameters determined, the need for load calculation. Need to factor commonly used method, the calculation will not

12、repeat them. Need to explore is the need for coefficient selection, which in the current specifications, manuals and the “unified technical measures“ is also not clear requirements, based on years of design experience th

13、at most end shops in the distribution or level within the household distribution box with case Kx generally take a while, in the calculation of the loop route to take 0.7 to 0.8, the distribution transformers in the subs

14、tation calculations take 0.4 to 0.6. 3 substations set Load calculation based on the results of this project the total installed capacity of transformer 43400Kv.A, after repeated consultations with the power company, res

15、pectively, in the project in the 1000/50; bus carrying capacity for the 1000A, this road can meet the maximum 1000A current load requirements, even if there is adjustment, power distribution switches and circuit can not

16、make big changes. 6 layer distribution box set According to the division of layers of fire protection district, respectively numbered as A ~ K layers within the set level shaft for the retail lighting power distribution

17、box, with one on one power supply shops in radial power. Should be noted that the forms of the complex layers of layers of fire partition, does not correspond to the lower, making some of shaft power in charge of the fir

18、e district at the same time, also responsible for the power supply adjacent to the fire district. At design time, using the principle of proximity, while also taking into account the burden of the whole trunk load condit

19、ions, so that each shaft as far as possible a more balanced load. 7 public area distribution box set Taking into account the future needs of the business re-decoration of public areas must be reserved for power. Here the

20、 design needs to consider the following points: ① question of how much reserve power, lighting and electricity, which according to GB50034-2004 “Architectural Lighting Design Standards“ table of Article 6.1.3 and 6.1.8,

21、commercial building lighting power density value, high-end supermarkets, business offices as 20W/m2, under the “decorative lighting included 50% of the total lighting power density calculation“ requirements, using the re

22、served standard 40W/m2. ② In order to facilitate the decoration in each partition set fire lighting in public areas and emergency lighting distribution box distribution box, in order to identify the electrical power dist

23、ribution decoration cut-off point. ③ the staircase, storage rooms and other parts of the decoration does not need to do, set the power distribution circuit or a separate distribution box, try not to be reserved from the

24、public area of electricity distribution board fed hardcover out. ④ control of lighting in public areas, the majority in two ways, namely, C-BUS control system or the BA system, the use of C-BUS has the advantage of more

25、flexible control, each road can be fed out of control, adjustable light control; shortcomings is a higher cost. BA system control advantages of using low cost, simple control; disadvantage is that the exchanges and conta

26、cts for the three-phase, three-way control may be related both to open, or both, in the decoration of the contacts required to feed the power supply circuit diverge to avoid failure blackouts. Design of distribution box

27、8 In the commercial real estate design, shop design is often only a meter box, and outlet route back to the needs of the user according to their second design, but the shops are difficult to resolve within the power supp

28、ly fan coil units, air-conditioning system as a whole can not debug. The project approach is to add a circuit breaker in the meter box for the coil power supply, another way for users to use the second design, as shown b

29、elow. User distribution box design 9 distribution cabinet / box number and distribution circuits Large-scale projects are often low voltage distribution cabinet / box number, low-voltage circuits to feed the more often t

30、here will be cabinet / box number and line number duplication, resulting in the design and the future looks difficult maintenance and overhaul. The project has three 10Kv substations, 20 transformer, hundreds of low-volt