frankfurt (germany), 6-9 june 2011 rosa – pt – s3 – 0249 edp distribution automation...

Frankfurt (Germany), 6-9 June 2011

ROSA – PT – S3 – 0249

EDP DISTRIBUTION AUTOMATION (r)EVOLUTION


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

Agenda


390 Substations HV/MV

3.000 MV feeders

60.000 km MV overhead lines 2.500 MV Telecontroled switching devices

on overhead MV lines

Year 2012:

4.000 telecontroled devices

ROSA – PT – S3 – 0249

EDP Distribution Automation - Current Situation

Network Load Break Switches

(OCR 1 + OCR 2)

Remote operation and

monitoring capability (OCR

1+2)

Fault interrupting capabilities

(OCR2) Voltage-time automatic

functionality (OCR2)


ROSA – PT – S3 – 0249

TIEPI MT (min)638

456 420341

215 175 176111 113

0

200

400

600

800

2000 2001 2002 2003 2004 2005 2006 2007 2008

Roll-Out decision

Feitosa-Portulezo, optimal number of OCR3 switches

0

200

400

600

800

1000

1200

1400

1600

1800

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

number of switches

cost

s (€

)

Value € END

INV RECC

TC RECC

Linear (INV RECC)

Power (Value € END)

Software Simulation

TIEPI, END, €ENDTotal CostsBefore & after

Marginal benefitin Total Costs

Advise (decision) # and locations

TIEPI, END, €ENDTotal CostsBefore & after

Marginal benefitin Total Costs

Advise (decision) # and locations

KOLDA, costs for END, DA-devices and total, per DA-step

0

100000

200000

300000

400000

500000

600000

700000

800000

900000

1 3 3 3 5 5 5step(s)

co

sts

(€

)

resulting value of END€ , NPV period of 10 years

cost of DA devices€

total cost of ENDvalue andcost DA devices€

Back to results KOLDA

excel

Localization Criteria

Comparison Total Costs, KOLDA versus Genodal, per feeder for Minho area

F.Refoios

T.Santar

T. Barca

F.Anais

T. Geme

F.Freixo

T.Moure

F.PdeLima

T.Arcos F.Portuzelo

P.Geraz

T.VilaVerdeP.Ponte

y = 0,9494x + 8061,9R2 = 0,9456

€ 0

€ 50.000

€ 100.000

€ 150.000

€ 200.000

€ 250.000

€ 0 € 50.000 € 100.000 € 150.000 € 200.000 € 250.000

Genodal optimum

KO

LDA

app

roxi

mat

ion

KOLDA versus Genodal

equality

Linear (KOLDA versusGenodal)

Note: R2=0,9456

Comparison Total Costs, KOLDA versus Genodal, per feeder for Minho area

F.Refoios

T.Santar

T. Barca

F.Anais

T. Geme

F.Freixo

T.Moure

F.PdeLima

T.Arcos F.Portuzelo

P.Geraz

T.VilaVerdeP.Ponte

y = 0,9494x + 8061,9R2 = 0,9456

€ 0

€ 50.000

€ 100.000

€ 150.000

€ 200.000

€ 250.000

€ 0 € 50.000 € 100.000 € 150.000 € 200.000 € 250.000

Genodal optimum

KO

LDA

app

roxi

mat

ion

KOLDA versus Genodal

equality

Linear (KOLDA versusGenodal)

Note: R2=0,9456

Validation

Pilot Project

Real Field Test

&Validation

HVMVHVCB1

MVR1 N.O.R2

R3

S4

DA in Recloser modeDA in Sectionaliser mode

HVMVHVCB1

MVR1 N.O.R2

R3

S4

DA in Recloser modeDA in Sectionaliser modeDA in Recloser modeDA in Sectionaliser mode

TelecomTelecom

Solution Specification

Approach to further improve DA


ROSA – PT – S3 – 0249

Results of computational study…

100%72%

56%

Base, without DA 25 DA Switches 25 DA Switches & 15 Reclosers

TIEPI

The application of only 4 DA Switches per MV feeder may reduce the TIEPI to about half the value…

100% 121%95%

Base, without DA 25 DA Switches 25 DA Switches & 15 Reclosers

MAIFI

• The application of the first 25 DA Switches reduced TIEPI to 72% but increased MAIFI to 121%

• 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


ROSA – PT – S3 – 0249

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

Integrated Control-Micro RTU

Integrated Protection (I>, I>> with inverse time characteristics)

Two modes: Recloser and Sectionalizer Automatic Function

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

Mounting facilities with the overhead lines in service

Low cost

Vendor independent

ANSI/IEEE 495-1986

Equipment Specification


ROSA – PT – S3 – 0249

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

Implementation Alternative 2: Automatic network reconfig.OCR 2-2OCR 2-1

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

Impact on protection system & reclosing

Phase overcurrent protection settings

0,01

0,1

1

10

100 1000 10000

Fault current (A)

Tri

pp

ing

tim

e (s

ec.)

MIF - PN LMT1º OCR3 - Def. Time2º OCR3 - Def. Time3º OCR3 - Def. Time

Issues: (1) How can coordination between the substation feeder protection and reclosers be guaranteed?(2) What should be the reclosing scheme at the substation?

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

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


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

Communications Protocol and Technology


1st Innovation levelThis pilot…

HVMVHVCB1

MVR1 S5R2

R3

S4HVMVHV

CB1MV

R1 R2

R3

S4

OCR3 in Sectionaliser modeOCR3 in Recloser mode

Local Automation

“OCR3”+

FCIs

Operational Flexibility Independency from Communications

and Dispatch Center Grid Resilience

2 functionning modes:•Recloser•Sectionaliser

Impact: TIEPI & MAIFI

ROSA – PT – S3 – 0249


HVMVHVCB1

MVR1 DS1R2

R3

S4HVMVHV

CB1MV

R1 R2

R3

S4OCR3 in Recloser modeOCR3 in Sectionaliser modeDumb No-Load Break Switch

Central Intelligence

Communications channelsNextInnovation level…(future)

Hybrid Automation(central + local)

Central Intelligence

+OCR “…”

… in the path of Smart Grids

Central algorithms for grid automatic control

Dumb No-Load Break Switch (Low cost OCR)

Impact: TIEPI

Grid automatic reconfiguration Breaking of TIEPI saturation trend

ROSA – PT – S3 – 0249


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

Conclusions


Thank you for your Kind attention

ROSA – PT – S3 – 0249

END

frankfurt (germany), 6-9 june 2011 rosa – pt – s3 – 0249 edp distribution automation...

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