The Software Research And Design Of Digital Protection Device On DSP

With a great deal of digital protection to circulate in the electric power system, they are in the electric power system of position seem to be as importance. At the same time, the development that digital protection equips oneself is also very quick, it request Character of personnel who engaged in digital protection higher. But the price of the existing digital protection experiment equips in national is currently expensive, its physical volume is huge, further more,each suit equips aim at protection tection function , it need the expensive investment , If going together with all categories digital protection investment, this unfit to be used for digital personnel to carry on the digital protection training.For changing this condition, on the base of refering the domestic and international data, studying existing many digital protection equip and combining characteristics of digital protection's experiment and training, the Hunan University and Extra High Voltage Company of Hunan Province put forward to research a set of multifunction digital protection experiment training equip, that is economy, practical and match the spot physically acquire, it gains the support of Electric Power Co.of Hunan Province.This text puts forward the design thought that realize the multifunction digital protection experiment's function, making use of a set of digital protection hardware flat, host computer and DSP's serial port download technique,further more, the typical and complex theory and arithmetic that is use in this system are lucubrated . the protection software of equipment is designed, software include lock type high frequency circuit protection that the direction component adopt various principle, synthesize repeat shut the switch and generatrix protection etc. The software adopt to designed of modularization , which makes design process clearly.The LCD adopted multilevel Chinese graph menu design technology etc. Experiment's function is diversiform, the operation is simple, interface is friendly, correspondence method is diversiform, including the RS232, the RS485 and CAN nets. Putting forward serial port download method based on LF2407 .and providing good download flat for personnel ,who can download procedure that draw up oneself to the device.Multi-function digital protection device that based on DSP technology meet...