FRIENDS and WAR

wistfultitleElectronics - Devices

Nov 24, 2013 (3 years and 11 months ago)

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FRIENDS and WAR


The mission of the Power Center for Utility Explorations is to explore
all energy issues holistically and to develop innovative solutions to
complex electric power engineering and energy problems involving
multidisciplinary teams to address issues in electricity infrastructure.


Alex Domijan

Professor, Director, Editor
-
in
-
Chief

International Journal of Power and Energy Systems

Power Quality and Distributed Energy Laboratory

Department of Electrical Engineering

University of South Florida

Tampa, FL 33620

(813) 974
-
5416

alexd@eng.usf.edu

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Exploration of Damage and Outage
Mitigation to our Electrical Grid due
to Weather


Techniques must take into account present and
next generation grid systems


Must be economic, flexible and reliable for
several decades


Long term planning and implementation
strategies must harmonize with short term
solutions.

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Traditional Grid Structure


Evolution to Central Station plus Distributed/On
-
Site Generation with
Integrated Real
-
Time Network Management & Demand Response

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Central power station
House
Factory
Commercial
building
Transmission Network
Distribution Network
Storage
Photovoltaics
power plant
Wind
power
plant
House with domestic CHP
Power
quality
device
Storage
Local CHP plant
Storage
Storage
Power
quality
device
Flow
Control
Suggested Objectives


Development of an Electrical Infrastructure that

1.
Is hardened for weather and reliable operation,

2.
Permits real time monitoring and control, and

3.
Enables reverse power flow which allows for
distributed generation systems to be reliably
and cost effectively inserted into present
electrical grids.

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Flexible, Reliable, Intelligent Electrical
eNergy Delivery Systems (FRIENDS):

Example of Grid Configuration

FRIENDS and Advanced Substation
Designs (Quality Control Centers)

FRIENDS: Example of an Advanced
Substation (Quality Control Center)

Weather and Reliability (WAR)


Unique Investigation into the effects of weather
conditions on reliability


Involving over 100 people over 4 years


Ongoing monitoring, database development, analysis,
and assessment/prediction tools.


Analysis/monitoring involving most of Florida


Normalization of reliability indices for weather variations
in temp, pressure, wind, lightning, humidity, etc, by
region


Robust solutions in terms of neural network modeling.


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System Under Study

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ANN PREDICTION RESULTS

Interruptions vs Weather conditions

STATISTICAL METHODS

Interruptions vs Weather conditions


Regression Results for all FPL

Multiple Variable Linear Regression Analysis :


Wind and Rain vs N (Primary only)

5
10
15
20
25
30
35
0
0.2
0.4
0.6
0.8
0
1
2
3
4
5
6
7
Wind (mph)
Rain (inch)
N avg
Field data
Prediction
Hardening and Preparedness vs Weather
Conditions


Not

all

weather

parameters

have

major

contributions

towards

interruptions
.


Determination

of

Hot

Spots

is

feasible

(harden

hot

spots

first)
.


The

contribution

of

the

weather

parameters

towards

interruptions

depends

on

the

geographical

conditions

of

the

area

under

consideration
.


Tree

trimming,

grid

equipment

design,

backup

equipment,

and

crew

allocation

strategies

are

appropriate

goals

with

the

tools

being

developed
.


The

USF

Power

Quality

and

Distributed

Energy

Laboratory

can

serve

as

a

resource

for

the

PSC

and

Florida

utilities

in

an

ongoing

basis

by

providing

information

on

preparedness

vs

reliability

on

a

real
-
time

basis

(important

for

public

safety

and

economic

operation

of

our

utility

grid)
.


Power Quality and Distributed Energy Laboratory


Key Suggestion
: Provide unique existing
capabilities already in Florida to monitor
power quality and reliability in real time
state
-
wide.


Background:

-

Can monitor power systems
real
-
time worldwide


-

First facility in the world with the capability
to generate 3
-
phase arbitrary voltages and
currents to apply to devices under test.


Advanced Power Line Conditioners


Various waveform generators


Three
-
phase Power Amplifier


Precision Power Measurement Standard


Transconductance three
-
phase amplifiers


Dynamometer


Remote monitoring systems


various motor generator systems


Advanced Relay testing systems


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Examples of Improving Reliability via Advanced Power Electronics


Distribution
Line
13.2 kV L-L
13.2 kV Bus
Induction
motor
S=3.2 MVA
PPG
S=1 MVA
PF=0.8
S= 2 MVA
PF=0.8
FASTRAN
ALTERNATIVE FEEDER
PREFERRED FEEDER
DYNAMIC
VOLTAGE
RESTORER
F 24006
INTELLIVAR
EQUIVALENT
SOURCE IMPEDANCE
Park F-21701
Z1=0.0770+j1.05 ohm
Z0=0.0620+j0.97 ohm
SUBSTATION EQUIVALENT
SOURCE IMPEDANCE
Delaware F-24006
Z1=0.0605+j0.9779 ohm
Z0=0.0249+j0.0628 ohm
L=1355.82ft
Q= 300 kVAR/Phase
L=5260ft
Load
S=1MVA
PF=0.8
Q= 300 kVAR/Phase
L=2109.51 ft
Q= 450 kVAR/Phase
L=3160.51ft
L=2780.41ft
L=743.081ft
Q= 300 kVAR/Phase
L=606.98ft
F 21701
Premium Power Park

(file delaware15.pl4; x-var t)
c:X0005A-PPGA
c:X0005B-PPGB
c:X0005C-PPGC
0.40
0.45
0.50
0.55
0.60
0.65
0.70
0.75
0.80
[s]
-700
-525
-350
-175
0
175
350
525
700
[A]
(file delaware15.pl4; x-var t)
m:CTOTA
m:CTOTB
m:CTOTC
0.40
0.45
0.50
0.55
0.60
0.65
0.70
0.75
0.80
[s]
0
10
20
30
40
50
60
70
*10
-6
(file delaware15.pl4; x-var t)
m:VPMA
m:VPMB
m:VPMC
0.40
0.45
0.50
0.55
0.60
0.65
0.70
0.75
0.80
[s]
0
2
4
6
8
10
12
*10
3
(file delaware15.pl4; x-var t)
m:VMINA
m:VMINB
m:VMINC
0.40
0.45
0.50
0.55
0.60
0.65
0.70
0.75
0.80
[s]
0
2
4
6
8
10
12
*10
3
(file delaware15.pl4; x-var t)
v:PPGA
v:PPGB
v:PPGC
0.40
0.45
0.50
0.55
0.60
0.65
0.70
0.75
0.80
[s]
-15
-10
-5
0
5
10
15
[kV]
(file delaware15.pl4; x-var t)
v:VA -X0005A
v:VB -X0005B
v:VC -X0005C
0.40
0.45
0.50
0.55
0.60
0.65
0.70
0.75
0.80
[s]
-10
-8
-6
-4
-2
0
2
4
6
[kV]
Mvar
injected by
the ASVC

Alternate
Feeder
voltage

Load
voltage

Load
Current

DVR
injected
voltage

Preferred
feeder
voltage

Distributed Energy


A Barrier to Implementation in the Grid:


Interface/Grid Connection

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EXAMPLE: WIND POWER EFFECTS

Wind Farm Production (MW) and System Frequency
(Five Minutes)
2.70
2.90
3.10
3.30
3.50
3.70
3.90
4.10
0
50
100
150
200
250
seconds
MW
59.94
59.96
59.98
60.00
60.02
60.04
60.06

Hz
Total Wind (Lalamilo+Kamaoa)
System Frequency
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SOLUTION for Non
-
dispatchable energy resources (Wind, Solar, Ocean, etc.)

A
B
C
A
B
C
0.69
#2
#1
12.47
10 [MVA]
L1
L2
L3
Vestas
VRCC
V47
VnaS
NAS
VnbS
NBS
VncS
NCS
A
B
C
A
B
C
0.48
#2
#1
12.47
2.5 [MVA]
g1
g2
g3
g4
g5
g6
2
1
300.0
2
3
2
5
2
4
2
6
2
2
dcCur
gc1
2
5
gc2
2
5
1.0
Chopper Reactor
1.0
Energy Storage
Capacitor
1
2
1
2
1
2
1
2
1
2
1
2
A
B
C
A
B
C
12.47
#2
#1
69.0
15 [MVA]
A
B
C
A
B
C
0.48
#2
#1
12.47
2.5 [MVA]
0.0384
0.0384
0.0384
1
2
1
2
1
2
1
2
1
2
1
2
INVERTER
POWER DUMP
RESISTOR
WIND FARM
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