Strategy for the migration of Eskom´s current substation protection and control architecture to the envisaged future architecture

The paper presents Eskom´s current and envisaged future generation substation secondary equipment architectures, as well as the fundamental principles that will form the foundation for implementing the envisaged future strategy. A strategy to migrate from the current arrangement to the desired future architecture is presented. The strategy includes the development of Eskom´s Phase IV EHV transmission line protection schemes as an example of the bridging step in the migration