According to the characteristic of office building be- ing thick with computers,the design idea about the internal protection and external protection of building is proposed,and also the measures of lightning protection are introduced in this paper,It emphasizes that internal protection should be impor- tant,especially for computer system in the high-rise office building.

According to the electric power and heat energy demand profiles of the office building, and the characteristics of Beijing local electric network, the costs of the distributed energy resource systems are calculated based on the cost-effective analysis.

The paper expounds what the intelligent system design contains according to the example of an office building,and introduces the conference system and computer room of data center of this project in detail.

According to the practical situation of the intelligent office block,its project research of PDS was carried out and the design of each subsystem was described in detail.

According to the characteristics of intelligent office building s cooling load,analyses the available model of ice storage AC system,and briefly narrates it s existent problems.