Design And Application Of Remote Modification Of 220kV Substation Relay Protection Setting Value

Development of power systems increasingly inseparable companionship computer technology and communication technology, computer protection device, but also in the daily work of staff also plays an increasingly important role, such as various document processing systems, process systems. With the further development of computer technology, the computer setting value of the subject also will be placed in front of protection staff, and effectively target high quality and efficient work, at home and abroad a number of research institutions and universities have developed some assistance setting value of the tuning software. The software is targeted only relatively simple, just for the power grid, for setting power plant is still in a state to be developed. Now most of the power plant or the accuracy rate is not high enough, so the need for the power plant setting calculation software for further development and promotion.In view of this, this article in view of the power system relay protection setting distance to modify related research in the application of 220 k V substation, the main contents are as follows:1, the paper analyzes the problems existing in the operation and the on-site practical factors limit the distance online operation technology, studies the status quo at home and abroad the distance is not a power outage setting, put forward to realize the distance online technical scheme of the operation.2, analyzed the component and function of microcomputer relay protection, put forward the microcomputer protection fixed value setting of three kinds of implementation mechanisms: protect the reset, pointer way switch, switch fixed value area; Substation are studied to modify setting value, change the setting value, cast out soft plate concrete implementation mechanism, realizes the remote operations communication protocols of feasibility study.3, according to the technical and system protection devices relying on remote setting, as well as remote online operations protection technology on-site technical requirements of the implementation of remote operation substation protection devices are analyzed, switching means setting the protection zone, run value changes, remote reset signals and other operations specific implementation.