| With the acceleration of the development of intelligent substation in our country and the increase of the contradiction between more equipment and the limited personnel in intelligent substation,among them,the most prominent contradiction is the urgent need to update the inspection strategy and the lack of effective means for personnel safety control.The traditional manual arrival patrol adopting fixed patrol cycle and lacks the analysis of different defects and key parameters of operating equipment cannot meet the production requirements of intelligent substation.That is because it is not only divorced from the actual situation of equipment operation,but also causes a great waste of labour power and material resources.Therefore,it is imperative to optimize the traditional manual arrival and inspection strategy.At the same time,the traditional substation safety management is very extensive.Because of the low level of automation and information technology,it mainly relies on manual management,which has defects in ex post management,randomness,no quantification and so on.For a long time,the operation,overhaul and inspection of substation equipment mainly rely on manual operation and completion,for which personal safety of personnel is particularly important in substation management.However,in operation and maintenance management,there are no effective technical means for personnel safety control.There are safety problems such as incorrect live interval,over-range operation and inadequate monitoring in substation at any time.This paper introduces an evaluation model of equipment operation state based on feature parameter tracking method.The observed data are linearly fitted by inputting the initial data such as key eigenvalues and inspection period of the equipment.The fitting curve is analyzed to predict the characteristic parameters and inspection time of the equipment,and the quantitative relationship between the state of the electrical equipment and the inspection period is obtained.The evaluation table of equipment condition and the shortest path algorithm based on Floyd are developed to realize the dynamic adjustment of the inspection cycle of intelligent substation,which saves the inspection time and shortens the inspection path effectively.Compared with the traditional inspection strategy,the effectiveness and scientificity of the optimization scheme are demonstrated.The method can also be applied to the inspection of intelligent robots in substations.By analyzing the present situation of safety management and control in an intelligent substation,the construction goal of safety management and control system is defined.A set of safety management and control system based on Landmarc algorithm for RFID ranging and positioning is designed.The main functions of system management,video monitoring,personnel positioning,equipment management,alarm notification and other modules are studied to achieve accurate positioning of substation operators and effectively solve the electromagnetic problems in substations.Strong interference,difficult personnel control and other issues.Through the linkage of positioning alarm and video surveillance in the system,the effective identification of regional personnel is ensured,the safety of personnel operation is improved,the occurrence of electric shock accident is reduced,and the efficiency of operation and maintenance management of intelligent substation is improved.Through practical application,the safety management and control system based on RFID technology is flexible,reliable and low-cost,which can effectively realize the positioning and tracking management of substation operators and inspectors,and has high practicability and economic benefits. |
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