Network and Protection Studies

Network and protection studies are conducted at generation, transmission and distribution levels. Services offered include the following:

• load flow studies;
  
• fault studies;
  
• transient stability studies;
  
• insulation coordination studies;
  
• protection studies including the design, implementation and testing of integrated network protection schemes, unit protection, redundant protection schemes and secondary protection such as harmonic, thermal and time-graded protection;
  
• power quality investigations;
  
• network trouble-shooting; and
  
• network planning including strategic application of particular equipment such as protective devices, power factor correction, automatic reclosing and system under-frequency load-shedding and islanding.

Network modelling software packages typically used include Digsilent, Simpower and ETAP.