Research On Fault Set Automatic Generation Technology Of Grid Risk Assessment

Due to the continuous expansion of power grids and increasingly complex structures,various new technologies such as flexible transmission,UHV transmission technologies and regional Internet are gradually being applied to power systems.There are many aspects outside the power system,and their failures will affect the reliability of the power system.The traditional methods of safety assessment and control are no longer able to adapt to the new power system environment.Therefore,this paper focuses on the power system fault warning and so on in order to achieve the prevention and control of the power system fault.At present,the method of grid risk assessment is based on a traditional method.Component analysis is also based on constant operating conditions.Although these methods can monitor system faults but are not accurate enough,due to real-time changes in operating conditions,weather conditions Change and the degree of outside interference,prone to false positives or analysis is not accurate enough to affect the operator to judge.Therefore,by automatically generating software such as fault set to prevent the blind spot of fault monitoring and data inaccurate,and to improve the stability of the system,it is necessary to properly make prevention and control decisions and ensure reliable warning of the system.In view of the above problems,this paper studies the degree of risk of real-time operation of power grid monitored by the power grid risk assessment software based on the automatic generation technology of fault set to ensure the power grid security and stability.This article first of all in the operational risk analysis,we must first determine the grid operational risk index system.Risk index refers to the quantitative analysis of risk,the size of the grid can directly reflect the size of the risk.Due to the complexity and time-varying nature of grid risks,it is an effective way to make a comprehensive assessment of grid operational risk by formulating a scientific indicator system for grid operational risk.Research on electrical equipment is the basis for risk assessment.The risk assessment of equipment not only involves the establishment of mathematical models,but also real-time monitoring systems.Through the research of fast algorithm of risk assessment and automatic fault generation technology,and gives the monitoring system hardware and software design.The software technology structure adopts hierarchical thinking,intersection layer,logic layer,data processing layer,data layer And so on,carries on the software design to the system monitoring platform,finally carries on the field application test.The test is carried out on the actual working conditions of LiaoNing Power Grid by online operation.The test example uses the online data of LiaoNing Power Grid,uses the bus branch model to model the system,gives an intuitive assessment of the current system risklevel,and qualitatively and quantitatively Analysis section and the previous section of the risk changes.According to the risk of cross-section show the details of the fault.Effectively reducing the misjudgment of the stability of the power system,,intuitively analyzing the risk situation of the power grid,and avoiding the loss of resources and economy.