Development Of Visual System For Relay Protection Setting Calcution And Management

The calculation of setting is always important in Relay Protection. In this software,topology analysis and fault calculation are designed and developed. A general graphical user interface based on object-oriented technique, database and visualization in scientific computing has been conducted. We can draw electrical components of the distribution network and fill the components data easily. Background programs analyze topology automatically and constitute node admittance matrix, node impedance matrix. With the dispersed technique,it needs less computer memory and accelerates the calculation speed. Dispersed technique has two parts:one is storage and operation without zeroï¼›the other is node numbering scheme. A new simple Node Numbering Scheme is proposed with some effective improvement in this paper.