Research And Improvement Of The Application Technology Of Five Protection Device In 500kV Substation

The construction of substation protection mechanism is the key work to ensure the stability and security of the power supply system.The "five defense" system of microcomputer effectively improves the stability and safety of the substation.In this paper,500 kV substation five anti-device application technology for in-depth analysis and research.First of all,according to the functional requirements of the anti-error system of substation operation,this paper analyzes the existing problems in the practical application of the conventional five-prevention technology.It is biased towards static error prevention.There is no way to monitor its own anti-erroneous objects in real time and to find out the power in short time Vulnerability in the system.The structure and working principle of five defense devices are expounded,and the working ideas of five defense lines are put forward.Secondly,according to the working requirements of 500 kV substations,the paper analyzes the features and operation modes of the five defense technologies in online and analyzes the characteristics and operation modes of the five defense technologies in online and designs a set of online five defense systems with the integration of communication technologies.On-line five-defense system is an improved technology in the traditional anti-error system,which breaks through the technical limitations of the traditional anti-error system,increases the number of new functional modules,monitors the power system,learns the loopholes therein and avoids Power system which appeared in the various failures.Finally,according to the current status of the reconstruction of 500 kV substations and the functional requirements of the five defense systems,the method of system transformation is put forward.After adjusting and processing,this method is applied to the actual project.It proves that the system transformation scheme proposed in this paper is reasonable and feasible.On-line five anti-system has a certain degree of security,its reliability is more stable than the traditional anti-error technology,and its power grid with Hebei Nanwang substation integration together,all the data are presented in the same platform which can be simple and clear Analysis and calculation of the multi-level completion of the power system to prevent errors.To avoid the security problems in the power grid,its operability and practicality are also stronger.The design of this paper achieves the goal of five anti-lock by blocking nodes.It no longer needs to be supported by five anti-simulation screens,which improves the reliability and work efficiency and reduces the workload of system maintenance.With the diversification of power supply demand and the personalized development of power load,the voltage load of substation and power grid service still need to be further improved.The on-line "Five Defense" system of micro-computer is still going to be further studied and improved according to actual needs,The final service for the safe and stable operation of the grid.