Application Research On Anti-override Tripping Technology Of XIAOZHUANG Mine Power Supply System

China’s share of energy production and consumption in the world is the largest,and coal,as the earliest traditional energy source used by humans,still occupies a very high share in China’s energy consumption structure,for the entire economy of China.In the industrial structure,coal accounts for a large proportion,and will maintain this proportion for a long time.The power supply system of the coal mine provides energy for the production of the mine.The safety of production and the safety of employees are the two basic contents.At present,China’s coal mine power supply system still has certain limitations,and the branch is huge.According to the further discussion of the current situation of Xiaozhuang Mine,the underground power supply system is a specific analysis aspect.On this basis,the leapfrog and small In-depth study of current grounding line selection and positioning,and proposed a solution based on fault location of GOOSE communication.At the beginning,the prevention theory of the leap-level trip should be clarified and introduced.The selection of the topological node,the over-level trip blocking mechanism and the identification of the circuit breaker refusal should also be analyzed and explained.Secondly,the ground fault discrimination principle and fault location principle are explained on the basis of parameter identification and GOOSE.This article specifically describes the hardware components of the system,based on the design concept of PowerPC + FPGA,the main processor selects Motorola’s MPC8313E chip,FPGA selects Xilinx’s XC6SLX9 chip,for communication module,memory expansion module,human-computer interaction module and Clock module switching input/output module,AC sampling module,controller,power module,the hardware components of these systems are explained one by one.This paper explains the soft,ware components in the system.At the same time,it explains he operation of the anti-step trip and the means of component discrimination and component identification.It also protects and prevents the software implementation of the leap-level trip and the implementation method of fault line selection.The system has been applied in the power supply system of Xiaozhuang Mine and has achieved good application results,further verifying the feasibility of the system.At the same time,the problems in the application process are analyzed,and the GOOSE communication process and short-circuit blocking are improved,so that it can better adapt to complex downhole conditions.