【正文】 is responsible for a shaft 1 to 3 layers of power, when a layer due to the change in capacity increases, while the 3layer capacity is reduced, you can use a spare plug box layer off the 3layer 1 layer capacity rationing . This level distribution in the substation, select the circuit breaker to choose the setting value when the circuit breaker to adjust to changes at the end to adjust the load setting value。③區(qū)分負(fù)荷性質(zhì)和類型。例如：某段干線設(shè)備容量 530Kv， Kx 取 ，計(jì)算電流為 704A，選擇斷路器框架值為 1000A，整定值為 800A；電流互感器為 1000/50；母線載流量為 1000A，此路最大可滿足1000A 電流的負(fù)荷使用要 求，即便有調(diào)整，配電開關(guān)及線路也可不必作大的變動(dòng)。 3）目前的規(guī)范和技術(shù)措施沒有對(duì)商業(yè)項(xiàng)目中不同類別商鋪的參數(shù)指進(jìn)行細(xì)化，工程設(shè)計(jì)中的負(fù)荷計(jì)算缺少據(jù)，大多數(shù)情況只能靠設(shè)計(jì)人員憑借以往工程經(jīng)驗(yàn)進(jìn)行計(jì)算。一般采用需要系數(shù)法，計(jì)算過程不再贅述。在設(shè)計(jì)時(shí)，采用了就近原則，同時(shí)也考慮到整條干線負(fù)擔(dān)的負(fù)荷情況，盡量使各個(gè)豎井內(nèi)負(fù)荷比較平衡。地下部分基本為車庫，用途比較單一，防火分區(qū)也比較整齊，按防火分區(qū)編號(hào)，如 AL— BL— 1/ AP 與 APE 等各字母及數(shù)字含義： AL 代表照明配電箱（ AP 代表動(dòng)力配電箱， APE 代表應(yīng)急動(dòng)力配電箱）； BI 代表地下一層； 1/1 代表 I 防火分區(qū) 1 號(hào)箱。 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 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 box, with one on one power supply shops in radial power. Should be noted that the forms of the plex layers of layers of fire partition, does not correspond to the lower, making some of shaft power in charge of the fire 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 conditions, 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 redecoration of public areas must be reserved for power. Here the design needs to consider the following points: ① question of how much reserve power, lighting and electricity, which according to GB500342020 Architectural Lighting Design Standards table of Article and , mercial building lighting power density value, highend supermarkets, business offices as 20W/m2, under the decorative lighting included 50% of the total lighting power density calculation requirements, using the reserved 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 distribution decoration cutoff 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 public area of electricity distribution board fed hardcover out. ④ control of lighting in public areas, the majority 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。 3 substation located 2 units plus 2 units transformers, take the southern section of A, B two office supply. 10Kv power configuratio