Zinc Oxide Lightning Arrester (Earth-sized) Online Monitoring And Charged Detection Research

MOA (MOA) and its excellent UI nonlinear characteristics of the grid overvoltageprotection work has played a key role. In the normal operation of power system, due tovarious reasons there are many factors that cause over-voltage is applied to the electricalequipment, such as air, power frequency overvoltage, switching overvoltage, over-voltageresonance when applied to these over-voltage electrical equipment when serious damage mayoccur, causing power outages, resulting in a significant loss of the national economy, so theMOA (MOA) for the protection of the power system is safe and reliable operation is critical.Since zinc oxide surge arresters (MOA) led today’s dominant position over-voltageprotection, so grasp MOA (MOA), chiefly arrester is very important, zinc oxide surgearresters have under normal operating voltage of the system, showing a high resistance state,only slightly An electric current passing grade. In the over-voltage and high current role itwill show a low resistance, thus limiting the superior characteristics of residual pressure overboth ends of the arrester. Promote the use of any large-scale equipment to ensure its safeoperation and health has become a new problem, this paper based on zinc oxide surgearresters (MOA) composition and structural characteristics of the structure, describes thedevelopment and control of their health standard test method analysis, from the previous trialbegan outage analysis introduction: as conventional insulation resistance test---test---runleakage current voltage alternating current test----discharge counter motion detection, alongwith the era of progress and development of the grid demand, can not meet the powerrequirements of the test, it must seek a new test methods to meet the demands of the times.Test techniques and live online monitoring detection born on the application.MOA (MOA) in test technology is accompanied by the development needs of the grid,with the rapid development of sensors, fiber optics, computer technology, raw earth-shakingchanges overhaul the way to determine the MOA (MOA) normal state, began to change forthe on-line monitoring and detection of the center of gravity of the charged state ofmaintenance, which is an important feature of the instrument is not used preventive tests, butto use a variety of high-sensitivity sensors and measuring instruments for zinc oxide surgearresters (MOA) physical, chemical amount in the running state collection and detection, etc.,according to a combination of monitoring and constantly monitored to determine whether thetest data blackouts MOA (MOA) state to develop strategies to ensure the reliability and safetyof the power grid.According to MOA (MOA) no discharge gap, zinc oxide barrier film under thelong-standing power grid voltage, leakage current will flow through the resistor in series with each piece, depending on the size of the current MOA (MOA) thermal stability and resistancethe degree of aging piece of research, after a lot of theoretical analysis of a series of practicalresearch, the reaction against the failure characteristics of zinc oxide surge arresters (MOA)resistive leakage current characteristics of the parameters studied data-oriented softwarefailure analysis techniques, operating voltage under realistic sampling-based sensingtechnology, online testing technology and live detection technology background computersystem monitoring, supplemented by artificial recognition technology MOA resistive currentanalysis. Online detection technology and live detection technology has brought a revolutionMOA test, if combining theory with practice to develop this technology will be able toaccurately determine the MOA (MOA) health status and life cycle management.Live testing, on-line monitoring to confirm the discovery of a power outage detectionmust be combined with comprehensive testing means when related to equipment malfunction,the MOA accurately determine resistive current leakage currents and other major causes ofexcessive moisture parameters, the aging of the valve failure, has a very effective detectionand judgment results, and the results of on-line monitoring and detection of live analysis,develop a targeted strategy overhaul, zinc oxide arrester (MOA) to get all aspects of the life ofthe monitoring and maintenance, and was right after the MOA manufacture, selectioninstructive role, so to be able to reduce the zinc oxide arrester (MOA) sudden accidentdamaged electrical equipment, reducing power outages, thus reducing a significant loss of thenational economy, improve grid reliability and to ensure security.