Effects of Faults on Power System :
Q. State any four abnormal conditions which can develop In power system and state Its effect on power system.
Q. State any four abnormal conditions which can develop In power system and state Its effect on power system.
- The most dangerous type of fault is a short circuit as it may have the following effects on a power system, if it remains unclear.
- Heavy short circuit current may cause damage to equipment or any other element of the system due to overheating and high mechanical forces set up due to heavy current.
- Arcs associated with short circuits may cause fire hazards. Such fires, resulting from arcing, may destroy the faulty element of the system. There is also a possibility of the fire spreading to other parts of the system if the fault is not isolated quickly.
- There may be reduction in the supply voltage of the healthy feeders, resulting in the loss of industrial loads.
- Short circuit may cause the unbalancing of supply voltages and currents, there by heating rotating machines,
- There may be a loss of system stability. Individual generators in a power system may loose synchronism, resulting in a complete shut down of the system. Loss of stability of interconnected systems may also results.
- The above faults may cause an interruption of supply to the consumers, there by causing a loss of revenue.
- High grade, high speed, reliable protective devices are the essential requirements of a power_ system to minimizes the effect of faults and other abnormalities.