The configuration of the electrical distribution system changes over time to meet the needs of the various generation, manufacturing and operating processes. The alteration of an electrical distribution system configuration results in the operating characteristics and specification of the network changing.
For new and expanding facilities it is necessary to determine the predicted electrical load growth rate and investigate suitable connection points for future loads. Identifying suitable locations in the electrical network can be utilised for connection of electrical loads, identifying weak points, spare capacity and prediction of energy loss. This will allow the creation of a technically feasible strategy for the successful expansion of the network.

Transformer differential protection is a popular choice for protecting critical transformers in power systems, especially when high sensitivity is required to detect internal faults at an early stage. It’s commonly used in substations and industrial facilities to safeguard transformers and maintain power system reliability. The benefits of Differential protection are:

• It can detect even small fault currents and, therefore, provides better protection against incipient (early-stage) faults within the transformer. This sensitivity is particularly useful for detecting winding faults and incipient problems that might develop into more severe issues if left undetected.
• Once the relay detects a fault or an abnormal condition, it sends a trip signal to the circuit breaker to disconnect the transformer from the system. This rapid tripping helps prevent further damage to the transformer and minimizes system disturbances.