Microcomputer Protection Experiment System Based On A Novel Study On The Relay Protection Testing Device

Traditional relay technology is increasingly unable to meet the needs of themodern power industry development, protection devices will replace old ones, newcomputer protection should also be a timely, new computer protection device musthave the fault such as the right fast response, flexible operation, protection, and nomovement dead zone, a series of new features to adapt to the requirements of a newera of development, the paper designs a new type of protection device with real-timemeasurement, automatic control, automatic protection, remote control remote multi-comprehensive new features, in particular, real-time test technology to be updated tomeet the higher requirements of the new technology. Such as the system in order toimprove the accuracy of the test signal and the use of electronic transformer interface,digital test signal, the accuracy and reliability of the analog test signal are expected.With the new technology of the computer, microprocessor-based protection of therapid development of intelligence, new methods, new means for the protection of theclosed-loop automatic testing possible.Technological developments based on the electric power industry, it is necessaryto develop a new, suitable microcomputer relay protection system. Paper in theresearch and analysis on the basis of the structure, principle and functions of themulti-function microprocessor-based protection and substation integrated automationon training system "and the development of design based on dual DSP+CPLDtechnology microcomputer relay protection testing device. The device can meet theneeds of the power sector and research institutions, has broad application prospects.Taking full account of the experimental teaching of special needs, with sufficienttesting and connection points and with the configuration software to learn, friendlyinterface, with a full-featured, convenient and practical advantages.The major design a high-precision signal occurred master module and relatedhardware circuit, the development of a complete power amplifier circuit and itsprotection, self-test circuit, the circuit linear distortion, fast response, high-precisionserial DA converter and10M Ethernet controller CS8900A DSP chip Ethernetinterface design, saving space. The master module system program design ideas andthe compilation method, defines the communication protocols, and embeddedreal-time operating system design human-computer interaction module system, the software ensures that real-time monitoring; steady state and transient waveformgenerated algorithm, made a brief introduction on the IEC60870-5-103Statute of thebit to achieve the application process on the status word query and control a series ofnew ideas.Hardware and software of the device uses a modular design, storage andcomputing power, improved anti-interference, self-test capability. The tests showedthat the new relay test device with high precision, small size, light weight, reliableoperation, friendly interface features can be matched with the experimental trainingsystem of multi-function microprocessor-based protection, replace and go beyond theconventional relay and PC protection, to meet a variety of substation integratedautomation new experiment...