Design And Reliability Analysis Of Electricity Distribution System In Blood Center Building

Fresh blood and blood products are indispensable in the field of emergency medical treatment and the treatment of certain defective diseases and are valuable medical resources that cannot be replaced by drugs.In recent years,with the increasing demand for medical blood products and the improvement of medical technology,blood and medical blood products were in short supply.As an important medical facilities for blood collection,preparation and distribution of medical blood products,the number of new construction,reconstruction and expansion projects of blood inventory buildings was increasing continuously in recent years.And an important role has been played by the reliability of electricity distribution system in the normal function of blood inventory buildings.But currently,no special design codes and only few engineering examples could be found and referenced for blood inventory buildings design work in our country.And only few people carryed out in-depth analysis on the design of electricity distribution system and reliability verification of electricity distribution system of such buildings.It is also hard for designers to carry out standard design without dedicated design specification and abundant design experience of blood inventory buildings.A blood inventory comprehensive businessbuilding project which will be completed within this year and is one of the national key construction projectis is relied by this thesis.On the basis of the author’s independent design experiences in this project,The electricity distribution system design of blood inventory buildings was studied,and the reliability analysis model of the electricity distribution system in blood inventory buildings was established by the author in this thesis,hoping to summarize a set of design methods and analysis methods for the electricity distribution system design work in similar projects.The main research contents in this thesis are as follows:(1)The building characteristics of blood inventory buildings were introduced in this thesis,and the functional scope,equipment statistics and electricity load requirements of blood inventory buildings,which provided the basis for further design of electricity distribution system of blood inventory buildings were given in view of the problems such as variable functional zoning,numerous medical equipment,complex electricity load classification and electricity supply requirements.(2)The deficiencies of the relevant design specifications were analyzed and the electricity load levels and electricity power sources of different areas were determined according to the actual situation of specific departments and functional divisions of the blood inventory buildings mentioned before.Then the design scheme of the high voltage electricity distribution system and the low voltage electricity distribution system were given.The design process of each distribution box was described through calculation,and the electricity distribution system diagram was given at last.(3)A general electricity distribution system reliability evaluation model for blood inventory buildings was established by introducing the layered partition network equivalence method,and the electricity distribution topological graph was standardized divided by layers and partitions and network equivalent replacement within the partition range,which simplified the calculation process of reliability index.Compared with the traditional analysis method,the calculation amount and simplified the logical relation were reduced by using the layered partition network equivalence method.(4)The reliability of the electricity distribution system of the blood inventory buildings were calculated,and several different distribution modes of electricity availability were obtained by analyzing the reliability index of the electricity load point.The reliability of different distribution modes is quantitatively compared,which verified the rationality of the electricity distribution system adopted above,and at last the redundant design opinions of the electricity distribution system for the blood inventory buildings were summarized.