POC BES

Question 1

WHAT IS THE REGIONAL ENTITY?

Answer 1

WECC

Question 2

HOW MANY AREAS DOES WECC COVER?

Answer 2

5

Question 3

XFRMR’S OPERATE ON WHAT PRINCIPLE?

Answer 3

ELECTROMAGNETIC INDUCTION

Question 4

OHMS LAW

Answer 4

E=IXR

Question 5

HOW TO DEFINE POWER FACTOR

Answer 5

RATIO OF REAL POWER TO APPARENT POWER

Question 6

WHICH PART OF A GENERATOR IS STATIONARY?

Answer 6

STATOR

Question 7

DEFINE EFFICIENCY

Answer 7

THE MEASURE OF HOW OUTPUT IS RECEIVED FOR A GIVEN AMOUNT OF INPUT

Question 8

HEAT RATE MEASUREMENT?

Answer 8

BTU’S

Question 9

UNIT CAPABILITY

Answer 9

MAX.- SAFE GENERATION PRODUCTION
MIN.-SMALLEST AMOUNT OF GENERATION THAT A UNIT CAN SUSTAIN

Question 10

RESPONSE RATE IS MEASURED IN WHAT?

Answer 10

MW/MIN.

Question 11

HOW TO CLASSIFY A SUBSTATION?

Answer 11

THEY HAVE XFRMR’S

Question 12

WHAT IS THE DIFFERENCE BETWEEN REACTOR AND CAPACITORS

Answer 12

REACTORS- SINK VARS
CAPACITORS-SOURCE VARS

Question 13

FAULT RECORDERS DO WHAT?

Answer 13

LOG ON PAPER OR COMPUTER CRITICAL CURRENT AND VOLTAGE WAVEFORMS AT THE TIME OF ANY FAULT

Question 14

WHICH SIDE OF A XFMR IS THE PRIMARY?

Answer 14

THE WINDINGS ELECTRICALLY CONNECTED TO THE POWER SOURCE

Question 15

HOW TO FIND TURNS RATIO?

Answer 15

V1/V2=N1/N2
(CROSS MULTIPLY)

Question 16

STEP UP XFMR REFERS TO?

Answer 16

VOLTAGE

Question 17

CAN A XFMR PRODUCE POWER?

Answer 17

NO

Question 18

XFMR POWER LOSSES?

Answer 18

HYSTERESIS, EDDY CURRENTS, I2R (HEAT)

Question 19

WHICH XFMR HAS PHASE SHIFT?

Answer 19

DELTA-WYE
WYE-DELTA

Question 20

WHICH XFMR DOESNT HAVE PHASE SHIFT?

Answer 20

WYE-WYE
DELTA-DELTA

Question 21

WHAT DEFINES A POWER XFMR?

Answer 21

VOLTAGES HIGHER THAN 69kV

Question 22

WHAT IS A AUTO XFMR?

Answer 22

A SINGLE WINDING XFMR WITH A TERMINAL THAT DIVIDES THE WINDINGS IN TWO

Question 23

WHAT IS A PHASE SHIFTING XFMR?

Answer 23

CONTROL POWER FLOW OVER PARALLEL LINES BY ADJUSTING VOLTAGE PHASE ANGLE AT ONE END OF THE LINE

Question 24

WHAT IS A INSTRUMENT XFMR?

Answer 24

CT’S LOWERS CURRENT OR PT’S LOWER VOLTAGE FOR RELAY CONTROL CIRCUITRY

Question 25

WHICH CHARACTERISTICS DESCRIBE BES REQUIREMENTS?

Answer 25

100kV AND ABOVE
GENERATION LARGER THAN 20MVA OR GENERATION AGGREGATE CAPACITY GREATER THAN 75MVA

Question 26

DOES ALUMINUM OR COPPER HAVE LOWER RESISTANCE

Answer 26

COPPER

Question 27

WHAT IS CHARGING CURRENT?

Answer 27

CURRENT THAT FLOWS DUE TO THE ALTERNATE CHARGE AND DISCHARGE OF THE LINE DUE TO ALTERNATING VOLTAGE REGARDLESS OF WHETHER THE CIRCUIT IS CLOSED OR OPEN-ENDED

Question 28

DURING LIGHT LOAD WHERE IS VOLTAGE HIGHER?

Answer 28

AT THE RECEIVING END

Question 29

SERIES CAPACITORS DUE WHAT?

Answer 29

DECREASE IMPEDANCE AND INDUCTIVE REACTANCE
INCREASE POWER

Question 30

LIST 4 SOURCES OF REACTIVE POWER

Answer 30

OVER EXCITED GENERATOR AN SYNCHRONOUS CONDENSORS
SHUNT CAPACITORS
LINE CAPACITANCE

Question 31

IS A BIRD ON A LINE A COMMON FAULT?

Answer 31

NO

Question 32

ARE INTERNAL FAULTS INSIDE?

Answer 32

YES

Question 33

DISTANCE RELAY

Answer 33

ONLY ANSWER WITH DISTANCE IN THE CHOICE

Question 34

LIST 3 TRIPS FOR PILOT SCHEMES

Answer 34

TRANSFER TRIPPING,
DIRECTIONAL COMPARISON,
PHASE COMPARISON

Question 35

3 THINGS PROTECTED BY DIFFERENTIAL PROTECTION

Answer 35

GENERATORS, XFMRS,BUS SECTIONS

Question 36

WHAT DIFFERENTIAL ARE CT’S LOOKING FOR?

Answer 36

CURRENT

Question 37

RAS

Answer 37

ALL OF THE ABOVE

Question 38

OVERGENERATING DOES WHAT TO FREQ.?

Answer 38

RAISES IT

Question 39

WHAT ARE UNSCHEDULED FLOWS

Answer 39

LOOP, PARALLEL, AND INADVERTENT FLOWS

Question 40

WHAT DOES AGC DO?

Answer 40

-AUTO ADJUSTS GENERATION
-COMPUTER CONTROL TO MAINTAIN LOAD/GEN BALANCE
-USES AN ERROR SIGNAL CALL AREA CONTROL ERROR TO FUNCTION

Question 41

MODES OF AGC?

Answer 41

TIE LINE BIAS CONTROL,
FLAT FREQ. CONTROL,
FLAT TIE LINE CONTROL