Research On The Construction Organization Design Of The 220kV De’an Transformer Project

Dean substation uses advanced electrical equipment, with a heavy-duty, high-capacity, inlet and outlet circuits and more features, so this project is more complex, project quality, schedule and construction safety requirements are relatively high. Construction standards in order to achieve the national grid company, must be combined with the construction design drawings and construction, fully consider the characteristics of the construction site and the level of their own construction team, the State Grid substation construction process standards strictly enforce the provisions of the development of technically and economically the best overall possible construction design has important value for the substation project was successfully completed.In this thesis, the research developments and progress of project construction organization design are described, introduces the theory of construction design, construction design concepts, classifications and main content. Then he introduced the basic situation and management objectives Dean 220kV substation project. Since Dean 220kV substation substation construction belongs to the larger construction projects, large projects, long duration, complex process, construction design is relatively complex, the construction organization Dean 220kV substation project design appeared more problems, the problems are:the layout is unreasonable, project organization imperfect, imperfect construction program, project management unscientific ignore construction safety management, construction management organization design does not attach importance to quality. Therefore, the need to use appropriate methods to evaluate and analyze these issues.In this paper, AHP D’220kV substation project construction design problems in risk assessment, and the establishment of a risk assessment model. In order to be more authoritative judgment matrix obtained from the field of six management personnel, six technical backbone of the team, let them-according to Dean 220kV substation project the actual situation, are risk factors for the factors to judge and use the "1-9 scale" approach to risk metrics. Finally, based on the obtained weights, the advantage of the sort of substation construction organization design to assess the risk, obtain a comprehensive assessment:the risk weight is the biggest risk of the construction process quality control, followed by the risk of the construction site general layout of these two factors are considered a class I risk calculation results with actual project is very close, so the preparation of construction design, these factors as a high priority target, strengthen risk management and make risk response and control measures. The other remaining as Class Ⅱ risk, this risk will require, as a general attention to the object, its trace at any time, to observe the changes of development. The project still there are many other risk factors that have not yet been quantified, but have quantifiable results, and the results have been substantially closer to the objective reality. According right final sorted Dean 220kV substation project construction organization design of each risk factor weight value of construction design weaknesses troubleshoot and targeted optimization, especially in the construction process optimization and quality control of construction the overall layout of the site optimization.