| Since the 1890s,the global economic situation has gradually improved,and the power system has begun to spread in every household.With the increase in electrical equipment,the number of electrical fires has also continued to rise.According to statistics,electric fires have accounted for more than 30% of the total number of fires,which caused heavy casualties and property losses.Therefore,power safety has become more and more important,and scientists have begun to put the issue of power safety in an important research position.In order to improve the effectiveness of electrical fire prevention and control,and at the same time make breakthroughs in the field of power safety,it is essential to strengthen the management of safety problems at the source of the power system and pay more attention to power monitoring technology.There are many shortcomings in the traditional electricity safety monitoring system,and the market also has a great demand for new electricity safety monitoring products.Technological breakthroughs in the field of electricity consumption monitoring are of great significance to the prevention and control of electrical fires,which will effectively improve the level of electrical fire prevention and control of residential buildings,and can greatly reduce the threat of electrical fires to the lives of Chinese residents.In this context,this article,aiming at the low level of residential electricity safety services in our country,has carried out research and device research and development on the diagnosis technology of residents’ safe use of electricity.Using the user’s fine-grained electricity consumption data obtained by system load identification technology,combined with circuit principle analysis,a line impedance calculation model and a low-voltage power supply line health diagnosis method are constructed.In addition,in-depth research has also been conducted on residential electricity safety monitoring and diagnosis technology.The research carried out in this paper is shown behind:(1)The operating characteristics of low-voltage power supply lines in different environments are studied,and a line impedance calculation model including two types of algorithms for loop impedance and indoor impedance calculation methods is established.Secondly,it introduces the inspection method of the line health in detail,and establishes the model of the health diagnosis model for low-voltage power supply lines based on the above technical solutions.(2)The equivalent circuit model of leakage and short-circuit events is established,the mechanism of leakage and short-circuit events in different environments is analyzed,and on this basis,the related technologies of fault monitoring and fault location methods are studied.Based on the equivalent circuit model,a fault monitoring model is introduced,user fault monitoring models in different environments are established,and methods for monitoring user power events and fault location in different environments are studied.The analysis of calculation examples shows that the built model can effectively monitor the abnormal electricity consumption of different users,improve the safety of electricity use,and reduce the waste of electric energy.(3)In order to further improve the safety and practicability of the user safety monitoring system,this paper analyzes the load types and the characteristic parameters that can be extracted from different electrical appliances by studying the pattern recognition technology of the dangerous operation of different electrical appliances,and establishes a A comprehensive diagnosis model of data technology for users’ safe power consumption.In order to enhance the practicability of the comprehensive diagnosis model for users’ safe use of electricity,this paper carried out the development and application test of a portable user’s safe use of electricity comprehensive diagnosis device.The analysis of calculation examples shows that the device can effectively diagnose the user’s electricity consumption and carry out danger warning. |
