Application Engineering Studies & INCIDENT Analysis

Once the expected short-circuit currents are known, a protection coordination study is performed to determine the optimum characteristics, ratings and settings of the power system protective devices.

This is done for various types of faults (three phase, phase-to-phase, double-phase-to-ground, and phase-to-ground) at different locations throughout the system.

The information is used to select fuses, breakers, and switchgear ratings in addition to setting protective relays.

Steps in Performing Protection coordination & Short Circuit Studies

Data collection — Information on all the components, present settings and ratings of all protective devices is obtained during a field visit and from electrical utility and manufacturers and then tabulated.

Manufacturer’s data — Each protective device has unique response characteristics, documented on manufacturer’s “time-current curves” that are needed for the study

One-line diagram — A power system diagram that shows how all components are electrically connected is created or if one already exists, updated.

Computer analysis — Using computer software, the system data is input, the short-circuit currents at various points in the system are calculated allowing engineer to determine the optimum settings.

Tabulate results — The settings and ratings of each protective device are put in a table for comparison with present field settings and ratings

Final Report — A detailed report including recommendations for corrective action is published

EPROSYS with its domain knowledge in Protection engineering has developed expertise in performing Protection Coordination Studies using newly acquired EA-PSM software from Europe.

EPROSYS engineers with their hands on experience of Testing and Calibration, Coordination and successfully many a problems understand the nitty gritty of the Protection coordination.

We have established our credentials by executing Protection Coordination jobs for important customers like TATA Communication Ltd. for their Data Centers, Trimex, UBL Group to name a few.

Coordination study can be complex for facilities like DATA Centers, considering the criticality & requirement of reliable supply

Data centers also present additional challenges to the engineer tasked with performing a power system study.

Many data centers are served by multiple utility sources and generators that can be operated in several different configurations.

All configurations must be considered for the study to completely predict the operation and identify any shortcomings in the power system.

EPROSYS is proud to have successfully executed this doing right first time and are getting repeat orders to do at all their DATA CENTERS in India.

Thus, we can be the best choice to take up your Protection Coordination, job using Software tools like EA-PSM from EUROPE.

Protective Devices Coordination

Need for Protection Coordination

Electrical system protection and coordination studies are key components to ensuring that a facility’s electrical system is operating in a safe and reliable manner.

The Reliability of Power system is challenged every time an expansion, reconfiguration, additional load or upgrade takes place.

Short circuit and Coordination studies help manage these complexities by ensuring that the protective device closest to an overload or short-circuit condition is the one that operates to quickly isolate fault.

The results of these studies allow for proper selection and settings of protective device such as fuses, circuit breakers, and relays used in the protection scheme.

Thus helping facilities maintain a safe, Reliable and Efficient Electrical distribution system.

In a properly coordinated system, a fault results in interruption of only the minimum amount of equipment necessary to isolate the faulted portion of the system.

The power supply to loads in the remainder of the system is maintained.

The goal is to achieve an optimum balance between equipment protection and selective fault isolation that is consistent with the operating requirements of the overall power system.

Benefits :

• Increased facility reliability & Operating Efficiency.
• Minimize system downtime and nuisance device operations & false trips
• Avoid equipment damage or failure through increased system protection
• Isolate faulty circuits without loss of power to other parts of the system
• Identify corrective action for under- protected equipment
• Avoid unnecessary blackouts and brownouts to the electrical power system
• Ensure safety of personnel