Introduction to Power Quality
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Transcript of Introduction to Power Quality
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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
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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 )
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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
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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
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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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