摘要:供配電系統是整個商場安全、可靠運營的核心部分，是電力系統中對商場用電區域進行電能供應和分配的系統。

    首先，安全性是商業發展中的重要環節，特別是大型商場，由于人員密集、疏散困難、排煙不暢等, 一旦在商場內發生電氣火災, 極容易造成傷亡較多的重大火災事故, 所以商場建筑的電氣設計要特別注重火災監控及消防措施, 所以合理安排、設計至關重要。

　　　其次，供電的可靠性是商業的中心支柱，特別是大型商場，一旦商場供電出現問題，整個商場的經濟將無法運作，對商場造成重大經濟損失，只有保證供電的可靠才能為商家帶來很好的社會效益和經濟效益。

　　　本文通過對商場用電負荷的計算和短路電流的計算來選擇電氣設備，以及確定變電所的主接線方案，加上變電所的繼電保護設計和備用電源設計，從而保證了商場供電的可靠性，電氣火災消防聯動和防雷接地保證了商場的安全性，所以本設計使得商場供電的可靠性、安全性大大提高了。

關鍵詞：大型商場；供配電系統；安全性；可靠性

ABSTRACT: Supply and distribution system is the entire mall safe, reliable operation of the core part of the power system in the area of shopping malls electricity power supply and distribution system.

    First of all, security is an important part of the commercial development, especially in shopping malls, crowded evacuation difficulties, poor smoke, an electrical fire in the mall, very likely to cause more casualties major fire accident, so the mall building electrical design should pay special attention to the fire control and fire fighting measures, so reasonable arrangement, design is essential.

   Second, the reliability of power supply is a central pillar of the business, especially for large shopping malls, shopping malls supply problems, the economy of the entire mall will not work to cause significant economic losses, the mall, only to ensure reliable power supply in order for businesses to bring good social and economic benefits.

   In this paper, the mall electricity load calculation and short circuit current calculation to select electrical equipment, as well as to determine the main substation wiring scheme, plus substation relay protection design and standby power supply design, thus ensuring the mall supply reliability, electrical fire fire linkage and lightning protection and grounding to ensure the security of the mall, so the design makes the mall reliability of supply, security is greatly improved.

Keywords: shopping malls; supply and distribution system; security; reliability