Basic Electricity - Senior Secondary 1 - General layout for transmission of electricity

General layout for transmission of electricity

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TERM: 2ND TERM

WEEK TWELVE

Class: Senior Secondary School 1

Age: 15 years

Duration: 40 minutes of 5 periods each

Date:

Subject: BASIC ELECTRICITY

Topic: GENERAL LAYOUT FOR TRANSMISSION OF ELECTRICITY

SPECIFIC OBJECTIVES: At the end of the lesson, pupils should be able to

I.) State the general layout for the transmission of electricity:

II.) Identify the components of electrical distribution

III.) Mention the functions of distribution transformers and substations

INSTRUCTIONAL TECHNIQUES: Identification, explanation, questions and answers, demonstration, videos from source

INSTRUCTIONAL MATERIALS: Videos, loud speaker, textbook, pictures,

INSTRUCTIONAL PROCEDURES

PERIOD 1-2

PRESENTATION

TEACHER’S ACTIVITY

STUDENT’S

ACTIVITY

STEP 1

INTRODUCTION

The teacher discusses the general layout of transmission of electricity

Students listens attentively to the teacher                                                                          

STEP 2

EXPLANATION

Teacher identify the components of electrical distribution.

 Teacher describes the functions of distribution transformers and substations

Students exhibit attentiveness and active engagement

STEP 3

NOTE TAKING

The teacher writes a summarized

note on the board

The students

copy the note in

their books

 

NOTE

GENERAL LAYOUT FOR TRANSMISSION OF ELECTRICITY

The following is a general layout for the transmission of electricity:

 

  1. Power Generation: Electricity is generated at power plants using various sources such as coal, natural gas, hydroelectric, nuclear, wind, or solar energy.
  2. Step-up Transformers: The generated electricity is then passed through step-up transformers to increase its voltage for efficient long-distance transmission.
  3. Transmission Lines: High voltage electricity is transmitted through overhead transmission lines or underground cables to substations.
  4. Substations: Substations are intermediate points along the transmission lines where voltage is stepped down for local distribution. They also regulate voltage and provide switching capabilities.
  5. Distribution Lines: Lower voltage electricity is then distributed to residential, commercial, and industrial areas through distribution lines.
  6. Step-down Transformers: Distribution transformers located near consumers step down the voltage further for safe use in homes and businesses.

Components of electrical distribution

  1. Transformers: Step-up and step-down transformers are essential components for adjusting voltage levels during transmission and distribution.
  2. Switchgear: Switchgear includes circuit breakers, switches, and fuses that control and protect the electrical system from overloads and faults.
  3. Distribution Lines: Overhead or underground distribution lines carry electricity from substations to consumers.
  4. Substations: Substations serve as distribution hubs where voltage is regulated and transformed for local use.

Functions of distribution transformers and substations

  1. Distribution Transformers: They step down high voltage electricity from transmission lines to a lower voltage suitable for use in homes and businesses. They also isolate different parts of the distribution system.
  2. Substations: Substations play a crucial role in regulating voltage, switching between different power sources, and providing backup power in case of outages. They also monitor and control the flow of electricity within the distribution system.

EVALUATION: 1. State the general layout for the transmission of electricity

  1.   Identify the 4 components of electrical distribution
  2. State the functions of distribution transformers and substations

CLASSWORK: As in evaluation

CONCLUSION: The teacher commends the students positively