Types of Unit System

Types of Unit System: All physical quantities are measured in certain units. There are two Types of Unit System, namely: Fundamental units Derived units Fundamental Units: All the physical quantities…

Continue Reading Types of Unit System

Per Unit System in Power System

Per Unit System in Power System: Per Unit System in power system is usual to express voltage, current, voltamperes and impedance of an electrical circuit in per unit (or percentage)…

Continue Reading Per Unit System in Power System

Per Unit System

Per Unit System: While carrying out the analysis of electrical machines (or electrical machine systems), it is usual to express voltage, current, VA and impedance in Per Unit System (or…

Continue Reading Per Unit System

DC Excitation System Working Principle

DC Excitation System Working Principle: In dc excitation system, the system has two exciters—the main exciter (a separately excited dc generator providing the field current to the alternator) and a…

Continue Reading DC Excitation System Working Principle

Basic Requirements of Protection System

Basic Requirements of Protection System: Protection system is an extremely important part of the power system as it is provided to operate under abnormal conditions to prevent failure or isolate…

Continue Reading Basic Requirements of Protection System

Effects of Short Circuit Faults on Power System

Effects of Short Circuit Faults on Power System: Depending upon power circuit voltage and configuration, method of neutral connection, presence of regulating devices and the speed of disconnection of the…

Continue Reading Effects of Short Circuit Faults on Power System