| The stable development of electric power industry directly affects the stable operation of society and economy.Among all the construction projects in the electric power industry,the construction of transmission and transformation lines is characterized by wide geographical distribution,large investment and long construction period.For the construction party,there are risks such as large economy and construction period.In addition,the construction personnel of such projects have strong liquidity,the construction environment is complex,the construction process of the substation project is complicated,the types of work involved are complicated,the cross-operation phenomenon exists in the high-voltage transmission electrician,and the equipment and equipment involved in the construction There are many types and quantities of machinery,and there are a lot of safety hazards at the construction site.These construction characteristics make the safety management work extremely difficult,and the risk during the construction of the project is extremely high.Therefore,establishing a reasonable risk management system for the whole process of power transmission and transformation projects is of great significance for ensuring the safety and stability of power construction projects.In this paper,the 1000 k V UHV power transmission and transformation project in sanhe section of state grid is taken as the research object,and a whole-process risk management system is established based on the theories of project management and risk management.This paper first analyzes the current situation of risk management of UHV transmission and transformation projects,analyzes the types of risks existing in the construction of UHV transmission and transformation projects,and further clarifies the shortcomings of risk management of the transmission and transformation projects.On this basis,this paper divides the risk management of construction of the UHV power transmission and transformation projects into three phases: risk identification,risk assessment and risk control.In the risk identification stage,this paper uses the WBS-RBS decomposition method to decompose the whole process of the UHV transmission and transformation project in stages and the risk factors according to the influencing factors,and constructs the WBS-RBS matrix,which may exist.The risk is analyzed.In the risk assessment stage,the fuzzy analytic hierarchy process is used to construct the analytic hierarchy process,and the triangular fuzzy number complementary judgment matrix is established to rank the risk factors.From the risk assessment,this paper establishes a LEC safety evaluation model for safety factors with higher risk factors,and provides guidance for the construction of power engineering projects.Considering the construction characteristics of UHV power transmission and transformation projects,this paper discusses the four risk factors of cost,schedule,quality and safety of the project,and proposes risk control measures.On the basis of theoretical analysis,combined with the actual situation of the project,this paper analyzes the risk of the whole construction process of UHV power transmission and transformation project.Based on this,a risk management system suitable for UHV power transmission and transformation projects is established.This study has certain reference and reference significance for risk management of UHV power engineering projects. |
