F u n d a m e n t a l o f P o w e r Q u a l i t y

W I R I N G D E S I G N W O R K S H O P

MODULE PQ2 FUNDAMENTAL OF POWER QUALITY

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P r o f . H e w W o o i P i n g / I r H P L o o i / I r L i m K i m Te n

x x x x x x @ g m a i l . c o m

2 SYNOPSIS FUNDAMENTALS OF POWER QUALITY

The presentation explains fundamental concepts in Power

Quality for industry with the following topical discussions:

1. Defining and understanding Power Quality.

2. PQ & EMC Concepts

3. International Standards on PQ

4. The economics of PQ

5. Current Status of Malaysian system.

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4 POWER QUALITY AN ANALOGY

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5 EXPLAINING POWER QUALITY

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Mark McGranaghan :

power problem manifested in voltage, current, orfrequency deviation that results in failure ormisoperation of customer equipment " .

ISO 9000 :

is all inner anddistinct elements that satisfythe clear or coerciveexpectations of customersand interested parties" .

In principle even of quality MAY NOT besatisfactory for some end -user (Angelo Bagini )

6 PQ IS A MULTIDIMENSIONAL ISSUE

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7 PQ IS AND ELECTROMAGNETIC COMPATIBILITY

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M. Bollen :

sources use the term power quality with differentmeanings . [ ] What all these terms have in common is thatthey treat the interaction between the utility and thecustomer , or in technical terms, between the power systemand the load " .

Power

Quality

Consumer

PQ looks different to

stake holders. PQ may

even look different for

different consumers.

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Defining PQ Phenomenon

Types of HF & LF Phenomenon

EMC Concepts

9 FUNDAMENTAL PRINCIPLES

Power Quality are issues relating to disturbance to the

power source due to external or internal influence.

POWER

SUPPLY

L.V. MAINS INTERFERENCE

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10 PQ PHENOMENA

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Technically PQ isa sub set of EMCBut often PQ isused as thecatch - all phrasefor the sameissue

EMC

PQ

Two terms are associated (and often confused witheach other) :

1. Electromagnetic Compatibility (EMC)

2. Power Quality (PQ) ;

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11 EMC AND PQ PHENOMENA

PQ

12 CONCEPT ELECTROMAGNETIC COMPATIBILITY

ELECTROMAGNETIC COMPATIBILITY (EMC)

EMC DEFINITION

THE ABILITY OF A DEVICE, EQUIPMENT OR SYSTEM TO

FUNCTION SATISFACTORILY IN ITS ELECTROMAGNETIC

ENVIRONMENT WITHOUT INTRODUCING INTOLERABLE

DISTURBANCES TO THAT ENVIRONMENT OR TO OTHER

EQUIPMENT

Equipment A Equipment B

Emission A

Susceptibility B

Equipment M

ipment X

Equipmen

tElectromagnetic

Environment

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DEFINITION ELECTROMAGNETIC DISTURBANCE

Any Electromagnetic

phenomenon capable of impairing

the performance of a device,

equipment or system.

ELECTRO - MAGNETIC

Electric (E) Magnetic (H)

Field Field

13 CONCEPT ELECTROMAGNETIC COMPATIBILITY

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14 CONCEPT ELECTROMAGNETIC COMPATIBILITY

DEFINITION ELECTROMAGNETIC DISTURBANCE

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