【導讀】就成為設計者不得不面對的問題。本文結合工程實例，介紹了高層建筑電氣設計。本項目商業(yè)綜合大樓，總建筑面積為405570m2，地上建筑面積272330m2，地下建筑面積133240m2,主體高度99m。70800m2，28層，標準層高為。景的餐飲差別也很大。鋪的性質，使得負荷在動態(tài)變化之中。不同；便在同一城市不同區(qū)域的消費群體也有差異。3）需要系數(shù)的選擇：參數(shù)確定后，需要進行負荷計算。需要探討的是需要系數(shù)的選擇，這在現(xiàn)行規(guī)范、手冊及。端商鋪內(nèi)戶箱或層配電箱計算時Kx一般取1，在各回路干線計算時取～，量為；2#變電所內(nèi)變壓器和10Kv,冷水機組共用一處10Kv電源進線，一級配電箱，與一般配電線路均應嚴格分開”。定的裕量以滿足調(diào)整造成的負荷變化。根據(jù)這一特點，在設計中較多地使用了插。線設備容量530Kv，Kx取，計算電流為704A，選擇斷路器框架值為1000A，器饋出回路岔開供電，避免造成故障時大面積停電。工程有3個10Kv變電所，20臺變壓器，上百臺低壓饋出柜，饋出回路更多。

　　

【正文】 ty in two ways, namely, CBUS control system or the BA system, the use of CBUS has the advantage of more flexible control, each road can be fed out of control, adjustable light control。 shortings is a higher cost. BA system control advantages of using low cost, simple control。 disadvantage is that the exchanges and contacts for the threephase, threeway 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 8 In the mercial 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 supply fan coil units, airconditioning 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 below. User distribution box design 9 distribution cabi / box number and distribution circuits Largescale projects are often low voltage distribution cabi / box number, lowvoltage circuits to feed the more often there will be cabi / 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 lowvoltage fed out of the closet, fed the circuit more. Accordance with the International Electrotechnical Commission (IEC) and the Chinese national standard requirements: ① All the distribution number to be simple and clear, not too box and line numbers are not repeated. ② number to simple and clear, not too long. ③ distinction between nature and type of load. ④ law was easy to find, make viewer at a glance. Based on the above requirements and on the ground, fire district and the underground construction industry form the different conditions, using two slightly different ways. Essential for the underground garage, uses a single parison, also relatively fire district neat, according to fire district number, such as ALBL1 / 1, AP and APE, the meaning of the letters and numbers: AL on behalf of lighting distribution (AP on behalf of Power distribution box, APE on behalf of the emergency power distribution box)。 BI on behalf of the basement。 1 / 1 for partition 1, I fire box. Above ground is more plex, more fire district, and on the fire district does not correspond to the lower, according to shaft number is better, such as AL1A1, AP, and APE, letters and numbers mean: 1 represents a layer。 A1 on behalf of A, No. 1 shaft fed a distribution box. Fed a lowvoltage circuits, such as the number of uses: W36AL1A1, W36) indicates that the route back to power supply transformer 3, 6, feed the power distribution cabi, AL1A1, said the then the first loop of the distribution box for the AL1A1 and so on, and so on. 10 Conclusion With more and more plex mercial design projects, designers need to continually improve the design level, designed to make fine. These are only bits of the design in the business lessons learned, and the majority of designers want to municate