Consider four number of substation, Substation A, Substation B, Substation C, Substation D. Here Substation A is generation station and B, C and D are distribution stations. In this, if the fault (short circuit or earth fault) occurs in Substation D means, the substation D relay has to operate, instead of that, the substation A relay operated means such system said to be poor relay coordinated power system. It causes the total power system shutdown or unnecessary zone trips. Because, there is no fault on substation A, B and C but the substation A operates unnecessarily. In order to avoid such relay operation, we have to set co-ordination between all 4 substations.
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GreaseMates - ISO 17025:2017 Accredited Third Party Callibration Laboratory Of India
Entry check: Check the instrument for defects and then Perform calibration. Here you compare the instrument at specific measurement points at last If the instrument falls outside the tolerances, you can possibly adjust the instrument and finalise the calibration results.
Power Sector Professional with 16yrs. of Project Execution & O&M Experience in Renewable Energy (Solar & Wind), Thermal Power Plants, Transmission Lines Projects in India, Northern & Western Africa, Middle East Region & Latin America Countries.
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