HNC Electrical Power Assign3 QCF 2015-16

Unit 63: Electrical Power

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HNC Engineering (QCF)

Assignment

Course Title : BTEC HNC Electrical & Electronic Engineering

Student Name : . Assignment Title: Assignment 3: Harmonics Issue Date 23/02/2016 Due Date 15/03/2016

BTEC Unit : Electrical Power Unit No.: 63

OUTCOME :

1).

2). Harmonics in power systems

3).

4).

Assessor’s Feedback

Learner’s Comments

Note to learner: Upon signing below, you are confirming that your submission is all your own work and any assistance received has been acknowledged, with all sources referenced.

Signature: Submission date:

Assessor’s name: Assessor’s signature: Date:

I agree with the feedback and criteria awarded. Learner’s signature: Date:

Assessment written by H. T. Mills date 10-03-2015 Verified before issue by: D. A. Wilson date 16-03-2015



Assessment and Grading (H.N.C) To achieve a pass the student must demonstrate the ability to:

Outcome 2 Criteria Yes No

P2.1 identify typical sources of harmonics in a power system

P2.2 explain the effects of harmonics in power systems

P2.3 evaluate at least four different methods of mitigation of harmonics

To achieve a merit the student must demonstrate the ability to:

Merit Criteria Yes No

M2 select/design and apply appropriate methods/techniques Indicative Characteristic: a range of sources of information has been used

Further Guidance You must show evidence of research from a range of sources. This will take the form of a suitable bibliography and also include an appendix with appropriate print-outs from external sources that have been discussed as part of your descriptions.

To achieve a distinction the student must demonstrate the ability to:

Distinction Criteria Yes No

D2 take responsibility for managing and organising activities Indicative Characteristic: autonomy/independence has been demonstrated

Further Guidance Describe how an organised and structured approach was used in working on this assignment. Students will need to demonstrate their ability to work independently using their own initiative and with minimum supervision from the lecturer. This could include the use of a target setting sheet and Gantt chart to plan and monitor assignment progress.



Scenario

You are a Design Engineer for a company that supplies equipment for use in factory automation systems. A new product is currently under development. Your manager has requested that you investigate the impact of harmonics and how their effects could be mitigated.

Task 1 Sources of Harmonics (P2.1) (a) Use a diagram to briefly describe harmonics in a power system? (b) Use diagrams and sketches to explain how harmonic distortion originates from

each of the following: i. Transformers ii. DC PSU’s iii. General non-linear loads

Task 2 Effects of Harmonics (P2.2) Harmonics in three phase electrical power systems are considered to have a detrimental effect. Explain what these effects are.

Task 3 Mitigation (P2.3) (a) In a three phase power system what methods can be used to mitigate the effects

of harmonics? Evaluate at least four different methods. (b) Describe the standards that apply in the UK.

Important Notes:

1. Use diagrams and images to illustrate your answers where appropriate.

2. It is not acceptable to copy information from other resources as the answer to the questions. This is obviously meaningless! You are expected to obtain the information, analyse them and describe / explain in your own words to show that you understand the subject.

3. This assignment is intended to represent the individual effort of each student. Consequently identical materials must not be shared between students as it will be considered as plagiarism and the college disciplinary procedure will be invoked.

4. Images and quotations may be used from other sources as part of your answer. However full credit must be given to the source of information.

5. Avoid the use of Wikipedia as the only source of information. 6. Use the Harvard Referencing System.

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HNC Electrical Power Assign3 QCF 2015-16