Research On Assessment Of Substation Operation Work

With the expanding of power grid scale unceasingly,it becomes more and more complex to the overhaul technological upgrading and integrated automation reform.As an important part of the power system safety operation,substation operation undertakes the task of the grid,such as switching operation,routine maintenance.The substation watch plays an important role to the entire power system.It is significant to research on the risk assessment and pre-control of replay protection field work.Firstly,this thesis introduces the research background of the thesis,the risk assessment research status of foreign and domestic.Compared simply to several methods of risk assessment,this thesis has a preliminary understanding of qualitative and quantitative.In order to make the research results more scientific and instructive,this paper combined with the actual operation of Substation,and chooses the method of combining qualitative and quantitative analysis.Then,this paper analyzes the content and related concepts of risk management and summarizes the position and role of risk assessment in risk management and the typical methods of risk identification and risk assessment.This paper overviews the content of substation operation.This paper summarizes the typical types of accidents caused by operation management,and the causes are each typical accident.In view of substation operation characteristics,this paper constructs the risk identification model of Delphi technique.This paper constructs evaluation model of 220 kV busbar switching operation,which is based on the behavior hazard factors,physical factors,man-machine efficacy damage factors and environmental hazards,etc.,to find the causes of operating risk.After the end of the identification of risk factors,this paper constructs a risk assessment model based on fuzzy comprehensive evaluation method,the AHP weights of the risk factors,using fuzzy comprehensive evaluation method for quantitative assessment of risk.This thesis verifies the theory and algorithm,through the example of 220 kV busbar switching operation.And then obtains the physical hazard factors in the important proportion of risk factors,provides theory support for the risk assessment personnel and model inference.Finally,according to the results of the assessment,this paper puts forward suggestions and pre-control measures for the safety of substation operation,which provides a theoretical reference for the operation safety of substation operation.