Installation of safety equipment (protection system) on the electrical grid, aiming to reduce due to interference. This should be done, because of the interference on the power grid may not be prevented altogether.
- The function of safety equipment.
- Protection system is unity (combined) of the tools (sub-systems) protection, serves to:
- Detecting the presence of interference (abnormal condition) in the electric power system diamankannya, so as not to cause damage.
- Removing or separate (isolate) the affected parts of the system so that, did not extend to parts of the system are not compromised and other parts of the system can continue to operate.
- Consideration protection system installation.
- In determining and establishing protection system installation on the power grid, there are some things that serve as consideration, namely:
- Function protection equipment, namely: installation of protective devices on each sub-grid systems must be appropriate, in accordance with its function.
- Security areas, namely: installation of safety equipment (safety relay) in each sub-area (section), intended in the event of disruption in certain sections, the relay can detect tampering with the help of the PMT, releasing disturbed section of part of the network (system) that other. Section between the one with the other section in the electric power system, can be connected and disconnected by the PMT.
- Double safety system, namely: the installation of a double safety equipment. (Primary and backup) for the purpose of safety when main fails to work, there are other safeguards that can secure the system from interference. Safety reserves will work after the main security failed to work, so the backup safety work with time delay (time delay) to allow the ultimate safety first.
- Criteria mehputi safety equipment:
– Safety equipment must have the sensitivity (sensitivity) is high, so it is quite sensitive in detecting disturbances in the security area, although disruption arising only provide minimal stimulation.
– Safety equipment must have reliability (reliability high, the degree of certainty of work (dependability) that can be relied upon, can detect and release the sub-system is broken and must not fail to work (having high dependality). Realibility safety equipment also must have a security level ( security) are high or should not be any crimes. An example of the work is: safety equipment experiencing the trip, but there is no interference on the network or interference occur in sub-acre (sub-systems) outside the safety equipment security. This will be detrimental, because it raises power outage, the truth should not happen.
– Safety equipment must have selectivity (selectivity) is high, ie: must be secured in the sub area (sub-systems) are in the main seat. Relays must be able to work as needed, for example, must work quickly or work with time delay (delay tyme) or even do not have to work, so that the relay must be selective
– Safety equipment must have the speed (speed) is high, which can separate sub-systems are disrupted as soon as possible, so that the damage can be minimized due to interference.
– Safety equipment must have reliability (reliability high, the degree of certainty of work (dependability) that can be relied upon, can detect and release the sub-system is broken and must not fail to work (having high dependality). Realibility safety equipment also must have a security level ( security) are high or should not be any crimes. An example of the work is: safety equipment experiencing the trip, but there is no interference on the network or interference occur in sub-acre (sub-systems) outside the safety equipment security. This will be detrimental, because it raises power outage, the truth should not happen.
– Safety equipment must have selectivity (selectivity) is high, ie: must be secured in the sub area (sub-systems) are in the main seat. Relays must be able to work as needed, for example, must work quickly or work with time delay (delay tyme) or even do not have to work, so that the relay must be selective
– Safety equipment must have the speed (speed) is high, which can separate sub-systems are disrupted as soon as possible, so that the damage can be minimized due to interference.