Electrical Control & Protection Systems fundamentals

Electrical Control & Protection Systems fundamentals

About this Course:

In this practice test you will learn different types of protection for electrical systems and networks. In this Course, you will learn  the different electric protection methods, system and devices, grading and protection, overhead lines protection, power system protection, cables feeder protection, transformer protection, motor protection ,generator protection, capacitor banks protection, bus bar protection, voltage and frequency protection and much more.

SCADA systems are used on most modern substations, to provide control and monitoring functions.

Here you will understand the architecture of the SCADA systems for electrical system control.

Why we need Electrical Protection Systems :

HV, MV and LV electric installations and equipment's are subjected to internal and external faults that can cause serious damages in persons and other equipment's.

To avoid and to minimize the consequences of those faults protection devices associated to equipment's that are able to break electric current are required.

For a better understanding of protections devices, we will covers protection systems of equipment's and installations most common faults on those equipment's and installations.

What you will learn

Protective Devices: Philosophy of protection, Nature, Causes and consequences of faults, Zone of protection, Requirements of a protective scheme, Basic terminology components of protection scheme. Relay classification, Principle of different types of electromagnetic relay. General equation of phase and magnitude comparators, Duality of comparators, Electromagnetic relays, over current relays Directional relays, Distance relay- impedance, Reactance and Mho type, Differential relays.

Electrical Feeder Protection: Over current and earth fault protection, Distance protection, Pilot wire protection, Carrier current protection.

Generator Protection: Biased differential protection, restricted earth fault protection, Field suppression, Negative sequence protection, Earth fault detection in rotor circuit

Power transformer Protection: Biased differential protections, restricted earth fault protection, Buchholz relay Protection of combined transformer and alternator. Bus Zone Protection: frame leakage and circulating current scheme-use of Translay relay.

Circuit Breakers: Formation of arc during circuit breaking. Characteristics of electric arc. Theories of arc Interruption. Recovery and restriking voltage, interruption of capacitive and inductive currents. Current chopping. Principle of A.C. and D.C. circuit breaking requirements of good circuit breaker circuit breaker rating. Different types of circuit breakers. Air break and Air blast circuit breaker. Plain break and controlled break all circuit breakers. Minimum oil circuit breakers. Vacuum circuit breaker, SF6 circuit breaker. D.C. Circuit breaker. H.R.C. Fuse: Construction and characteristics

Static Relays : Basic static relays used in protective scheme, Elementary idea about digital & numerical protection. Testing and maintenance of protective gear, Protection against surge-surge absorber, Surge-diverter. Arrangement of Bus bar, Circuit breaker and isolator. Current limiting reactors in power system and their arrangement.

This practice tests Covers all type of Multiple Choice Questions on "Electrical Control & Protection Systems".

***** I Hope you will find Quiz very useful. *****************

Enroll today start learning.   

Electric protection methods, system and devices

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What you will learn

• • Understand fundamentals of an electrical protection & Control system • Understand how an over current relay & earth fault relay operates
• • Understand circuit breaker system during fault conditions/ circuit breaker failure /synchronise a circuit breaker
• • Understanding SCADA system for how a substation • Selection of fuses • Types of MCB & their uses

Rating: 4

Level: Intermediate Level

Duration: 60 questions

Instructor: Mahendra Singh