Transcript Diapositive 1

Frankfurt (Germany), 6-9 June 2011
EDP
DISTRIBUTION
AUTOMATION
(r)EVOLUTION
ROSA – PT – S3 – 0249
Frankfurt (Germany), 6-9 June 2011
Agenda







Current Situation of DA in EDP
Distribution Automation (DA) New Vision
Pilot Project Goals
New Generation Switching Devices – OCR3
Protection System and Reclosing Impacte
Pilot Network Selection
Conclusions
ROSA – PT – S3 – 0249
Frankfurt (Germany), 6-9 June 2011
EDP Distribution Automation - Current Situation

390 Substations HV/MV

3.000 MV feeders

60.000 km MV overhead lines

2.500 MV Telecontroled
switching devices on overhead
MV lines

Network Load Break Switches
(OCR 1 + OCR 2)

Remote operation and
monitoring capability (OCR
1+2)

Fault interrupting capabilities
(OCR2)
Year 2012:
4.000 telecontroled devices
ROSA – PT – S3 – 0249

Voltage-time automatic
functionality (OCR2)
Frankfurt (Germany), 6-9 June 2011
Approach to further improve DA
Software Simulation
Localization Criteria
KOLDA, costs for END, DA-devices and total, per DA-step
KOLDA
Back to
results
900000
resulting value of END
€ , NPV period of 10 years
excel
800000
cost of DA devices
€
700000
total cost of ENDvalue and
cost DA devices
€
costs (€)
600000
Validation
500000
400000
Comparison Total Costs, KOLDA versus Genodal, per feeder for Minho area
300000
Feitosa-Portulezo, optimal number of OCR3 switches
200000
Value € END
0
INV RECC
1600
1
3
3
3
5
5
€ 250.000
TIEPI, END, €END
Total Costs
Before & after
100000
1800
5
step(s)
KOLDA versus Genodal
F.Anais
Linear (KOLDA versus
Genodal)
F.Freixo
T.Santar
F.Refoios
Linear (INV RECC)
1400
KOLDA approximation
Power (Value € END)
1200
costs (€)
y = 0,9494x + 8061,9
2
R = 0,9456
equality
€ 200.000
TC RECC
1000
800
€ 150.000
T.Moure
P.Ponte
T.Arcos
T.VilaVerde
F.Portuzelo
€ 100.000
P.Geraz
T. Geme
T. Barca
600
F.PdeLima
€ 50.000
400
Note: R2=0,9456
200
Advise (decision) #
and locations
0
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Marginal benefit
in Total Costs
€0
€0
€ 50.000
€ 100.000
€ 150.000
€ 200.000
€ 250.000
Genodal optimum
19
number of switches
Solution Specification
Pilot Project
Roll-Out decision
Telecom
HV MV
CB1
R1
DA in Recloser mode
DA in Sectionaliser mode
R2
S4
N.O.
R3
ROSA – PT – S3 – 0249
MV HV
Real Field
Test
&
Validation
800
TIEPI MT (min)
638
600
456
420
400
341
215
175
176
2004
2005
2006
200
111
113
2007
2008
0
2000
2001
2002
2003
Frankfurt (Germany), 6-9 June 2011
Results of computational study…
TIEPI
100%
Base, without DA
72%
25 DA Switches
56%
25 DA Switches & 15
Reclosers
• The application of the first 25 DA
Switches reduced TIEPI to 72% but
increased MAIFI to 121%
MAIFI
100%
Base, without DA
121%
25 DA Switches
ROSA – PT – S3 – 0249
The application of only 4 DA Switches per
MV feeder may reduce the TIEPI to about
half the value…
95%
25 DA Switches &
15 Reclosers
• Despite the duration of interruptions to be
smaller, customers are interrupted more
often and may “perceive" a lower Quality
of Service
• The subsequent application of 15
Reclosers, besides reducing the TIEPI to
56%, reduced MAIFI to figures very
similar to the starting values
Frankfurt (Germany), 6-9 June 2011
Equipment Specification
OCR3
“Intelligent” State of the Art Recloser
Magnetic Actuators
Voltage & Current Sensing
To be used in NO and NC positions
100% modular approach
Vendor independent
FCI
Coupling to MV overhead line – current
transformers
Individual units per phase line
Lightning signalling of MV faults
Local devices – without communications
Sensitivity to di/dt
Integrated Control-Micro RTU
Mounting facilities with the overhead lines
in service
Integrated Protection (I>, I>> with inverse
time characteristics)
Low cost
Two modes: Recloser and Sectionalizer
Automatic Function
ROSA – PT – S3 – 0249
Vendor independent
ANSI/IEEE 495-1986
Frankfurt (Germany), 6-9 June 2011
Implementation Alternative 1: Automatic faul isolation




Recloser programming: One fast reclose + one slow reclose
Sectionalizer programming: Definite open after one event of current +
5s absence of voltage
Fault isolated in 16,8s
First test option for the Pilot Project
ROSA – PT – S3 – 0249
Frankfurt (Germany), 6-9 June 2011
Implementation Alternative 2: Automatic network reconfig.
OCR 2-1



OCR 2-2
Recloser programming: One fast reclose + one slow reclose
On N.O. Points close after 20s of upstream
voltage absence
Sectionalizer programming: Definite open after one event of
current + 5s of absence of voltage
Fault isolated and network reconfigured in 21,8s
ROSA – PT – S3 – 0249
Frankfurt (Germany), 6-9 June 2011
Impact on protection system & reclosing
Issues:
Answers:
(1) Project team proposes short
grading time between reclosers
and adjustments at the substation
(2) Project team proposes evaluating
two reclosing schemes during the
field pilot.
ROSA – PT – S3 – 0249
10
MIF - PN LMT
1º OCR3 - Def. Time
2º OCR3 - Def. Time
3º OCR3 - Def. Time
Tripping time (sec.)
(1) How can coordination between
the substation feeder protection
and reclosers be guaranteed?
(2) What should be the reclosing
scheme at the substation?
Phase overcurrent protection settings
1
0,1
0,01
100
1000
Fault current (A)
10000
Frankfurt (Germany), 6-9 June 2011
Pilot Network Selection
Network requirements:
(1) Earth grounded MV network
(2) No investments in recent years
(3) Reverse reconfiguration capacity
(4) Quality of service problems
(5) Additional criteria to optimize
devices number and location
ROSA – PT – S3 – 0249
Frankfurt (Germany), 6-9 June 2011
Communications Protocol and Technology

IEC 60870-5-104






Standard protocol
Relatively simple
TCP/IP
Multi-vendor
Cost effective and efficient
GPRS



Proven wireless TCP/IP technology
Low cost of modem and data plan
Test if a public operator can deliver very tight SLA’s
ROSA – PT – S3 – 0249
Frankfurt (Germany), 6-9 June 2011
1st Innovation level
This pilot…
HV MV
CB1
OCR3 in Recloser mode
OCR3 in Sectionaliser mode
R1
R2
S4
S5
MV HV
R3
Local Automation
“OCR3”
+
FCIs
2 functionning modes:
•Recloser
•Sectionaliser
Impact: TIEPI & MAIFI
ROSA – PT – S3 – 0249
 Operational Flexibility
 Independency from Communications
and Dispatch Center
 Grid Resilience
Frankfurt (Germany), 6-9 June 2011
Next
Innovation level…
(future)
Communications channels
Central
Intelligence
HV MV
OCR3 in Recloser mode
OCR3 in Sectionaliser mode
Dumb No-Load Break Switch
CB1
R1
R2
S4
DS1
MV HV
R3
Hybrid Automation
(central + local)
Central
Intelligence
+
OCR “…”
Central algorithms for grid
automatic control
Dumb No-Load Break
Switch (Low cost OCR)
Impact: TIEPI
ROSA – PT – S3 – 0249


Grid automatic reconfiguration
Breaking of TIEPI saturation trend
… in the path of Smart Grids
Frankfurt (Germany), 6-9 June 2011
Conclusions






Acquisition of solutions off-the shelf
Evaluation of different suppliers
Cost and delivery time reduction
Improvement of overall quality of the equipments
Philosophy change in Distribution Automation
Decision for subsequent country roll-out
ROSA – PT – S3 – 0249
Frankfurt (Germany), 6-9 June 2011
END
Thank you for your Kind attention
ROSA – PT – S3 – 0249