Electrical Substation: Standard Practice and Maintenance Points
Introduction A modern electrical power system catering to huge energy demands are spread over extensive areas. It contains several major […]
Introduction A modern electrical power system catering to huge energy demands are spread over extensive areas. It contains several major […]
Definition of Current Transformer Current Transformer (CT) are used for reducing / stepping down ac current from higher value to
What is Insulation Resistance? Insulation resistance (IR) of an electrical equipment refers to the resistance between conducting part and earth.
Step for Calculation of Relay Operating Time In order to calculate the actual relay operating time, the following things must
What is Power System? The power system is a network which contain generation, distribution and transmission system. It involves process
Application certification type tests in the factory or laboratory The objective of application certification type tests (also known as functional
What is Tan Delta testing of Cable? Tan Delta, also called Loss Angle or Dissipation Factor, is a diagnostic method
Several Current transformer CT winding arrangements are used. These are described in the following sections. Wound primary type This type
Among the various possible methods used to achieve correct Overcurrent relay co-ordination are those using either time or overcurrent, or
What is Alternating Current(AC) ? Alternating current is the rate of flow of electrical charge through a conductor. I =
Tripping Circuit There are three main circuits in use for circuit breaker tripping: Series sealing Shunt reinforcing Shunt reinforcement with
Type tests on Relay Type tests are required to prove that a relay meets the published specification and complies with
What is PLCC (Power Line Carrier Communication) PLCC is used for tele-communication, tele-monitoring and teleprotection between electric substations through high
What is Relay? It is necessary to remove a fault from the power system as quickly as possible for healthy
What is Flexible Alternating Current Transmission or FACTs FACTS as they are generally known, are new devices that improve transmission
What Is Power quality measurement Solving power quality problems depends on acquiring meaningful data at the optimum location or locations
Introduction of Bus bar protection Bus bar protection scheme shall be provided for 220KV system where the sub-station layout arrangement
DC distribution for 400KV system Two sets of batteries (220v), their respective chargers and DC boards shall be used for
What is Battery charger Battery charger is battery charging equipment which used float and boost charging techniques for battery charging.
Definition of Reactive Power Reactive power(VARs) is defined as the amount of power that remains unused and gets generated within
How to replace faulty Battery Cell in Electrical Substation If we want to replace the battery cell named “B”. Now
Definition In science and technology, Battery is a device that stores chemical energy and makes it available in an electrical
Definition Lightning Arrester (LA)/surge arrester is a protective device used for limiting the affect of surge voltages on the equipment
Definition An electric device that is designed to respond to input conditions in a prescribed manner and, after specified conditions
Definition The Power Factor (P.F.) is a ratio of the real power that is used to do work and the
Full name of SCADA is Supervisory Control and Data Acquisition (SCADA). Why Power system automation required? To maintain a state
What is Power Quality? Power quality or Quality electricity is characterized by: Stable AC voltages at near nominal values and
Basic tripping circuit in Electrical power station When any section of power system or equipment needs to be protected, a
In the realm of electrical engineering, where safety and reliability are most important, one fundamental aspect often taken for granted