MiCOM P145 feeder management relay providesan integrated solution for the complete protection,control and monitoring of overhead lines andunderground cables from distribution totransmission voltage levels.

With a wide range of protection functions and relayflexibility, it is suitable for application on variednetwork requirements from solidly groundedsystems to the more specialized petersen coilgrounded system requirements.

A customizable user interface and programmablegraphical scheme logic provides simple andflexible application. The integrated user functionkeys and tri-color programmable LEDS provide acost effective solution for full feeder schemeapplications.

Simply combine the relay with a P891 (trip/closemodule) and P991(test block) in a frame and acomplete 19" rack mounted feeder scheme isengineered. Use the function keys to replacecontrol scheme switches and save on engineeringtime and wiring costs.

With optional High Speed - High Break contacts,the high break performance ensures no burn-outof contacts during normal operation or situationssuch as breaker failure, or defective CB auxiliarycontacts. The need for external electromechanicaltrip relays can be reduced/removed bytransferringthe high rating and durability duties into the MiCOMdevice thus giving further application and costbenefits.

Numerous integrated communication protocols,including IEC 61850, provides interfacing to almostany Substation Automation System or SCADAsystems. Development is continuous to ensurecompatibility with the latest protocolenhancements. A range of hardware interfaces areavailable for easy integration into any new orlegacy system.

Customer Benefits

• 1A & 5A in same relay• Wide auxiliary supply

voltage range• Programmable Function

Keys• Flexible LED indication • Option of multiple

communication protocoland interfaces,including IEC 61850

• High break outputcontact capabilityinternal to mainprotection – no relianceon auxiliary devices

AREVA T&D

MiCOM P145 Feeder Management Relay

PROTECTION

APPLICATION

The MiCOM P145 relay offers integral overcurrent andearth-fault protection as well as numerous protectionfunctions. It is suitable for application on solidlygrounded, impedance grounded, Petersen coilgrounded and isolated systems.

> Full Scheme Application

The relay is especially suitable where a completescheme solution is required and comprises functionkeys for integral scheme control functionality.The application shows the P145 combined with theP891 and P991 to provide a complete feeder schemesolution. The P891 provides relay independent trippingand closing functionality where required. Thisfunctionality can also be integrated with the P145 tomake use of relay functions such as checksynchronising or autoreclosing.

2>3

Protection Functions Overview

ANSI IEC 61850 FEATURE P145

50/51/67 OcpPTOC /RDIR Directional / non-directional, instantaneous / time delayed phase overcurrent (4 stage) •

50N/51N/67N EfdPTOC /EfmPTOC Directional / non-directional, instantaneous / •time delayed, measured earth fault (4 stage)

67N SenEftPTOC Sensitive directional earthfault (SEF/ I Cos ϕ, I Sin ϕ) •67W SenEftPTOC Wattmetric earthfault •YN Neutral admittance protection •64 SenRefPDIF Restricted earthfault •

Blocked overcurrent •Selective overcurrent •Cold load pick-up •

51V Voltage controlled overcurrent •46 NgcPTOC Directional / non-directional negative sequence overcurrent (4 stage) •49 ThmPTTR RMS thermal overload (single / dual time constant) •37P / 37N Phase and neutral undercurrent •27 VtpPhsPTUV Under voltage (2 stage) •59 VtpPhsPTOV Over voltage (2 stage) •59N VtpResPTOV Residual over voltage (Neutral displacement) (2 stage) •47 NgvPTOV Negative sequence overvoltage •81U PTUF Under frequency (4 stage) •81O PTOF Over frequency (2 stage) •81R PFRC Rate of Change of Frequency Protection (4 stage) •BC Broken conductor (open jumper) •50BF RBRF Circuit breaker failure (1/3 pole initiation) •VTS Voltage transformer supervision (1, 2 & 3 phase fuse failure detection) •CTS Current transformer supervision •49SR Silicon rectifier overload protection •79 RREC 4 shot three pole auto reclose •25 RSYN Check synchronising (2 stage) + System Split •

FnkGGIO Function Keys 10

LedGGIO Programmable LEDs (tri-color) 18

OptGGIO Digital inputs (maximum) * 32

RlyGGIO Output relays (maximum) (Hi Break-Hi Speed options) * 32

Front communication port (RS232) •Rear communication port (Kbus/RS485) •Rear communication port (RS485/Optic/Ethernet) Option

Second rear communication port (RS232/RS485) Option

Time synchronisation port (IRIG B modulated/un-modulated) Option

* Please note that there is a maximum on the I/O combination

MANAGEMENT FUNCTIONS

In addition to the wide range of protection functionslisted in the table, the P145 has the following integralmeasurement, control, monitoring, post faultanalysis and self-diagnostic functions.

> Measurement of all instantaneous & integrated values

> Circuit breaker control, status & condition monitoring.

> Trip circuit and coil supervision

> 4 alternative setting groups

> Programmable Function Keys

> Control inputs

> Fault locator

> Programmable scheme logic

> Programmable allocation of digital inputs and outputs

> Sequence of event recording

> Comprehensive disturbance recording (waveform capture)

> User configurable LEDs (tri-color)

> Local and remote communication ports

> Multiple communication protocol and interface options

> Time synchronisation

> Fully customizable menu texts

> Multi level password protection

> Power-up diagnostics and continuous self-monitoring of relay.

FUNCTIONAL OVERVIEW

X 50/51 67N/67W/64

50N/51N

67/67N 51V 46 49 37P/

37N

27/59 59N 47 50BF

CTS

VTS 79 25

YN 49SR

Fault records Disturbance Record

Measurements

PSL

Local Communication

2nd Remote comm. port

Remote comm. port

LEDs

Self monitoring

81U/81O/81R

X

FunctionKeys

50/51 67N/67W/64

50N/51N

67/67N

51V 46 4937P/37N

27/59

59N 47 50BF

CTS

VTS 79 25

YN 49SR

Fault records Disturbance Record

Measurements

PSL

Local Communication

2nd Remote comm. port

Remote comm. port

IEC 61850

Feeder management P145BinaryInput / output

always available

optional

Vref

V

I

IE sen

Self monitoring

81U/81O/81R

Y

– TripClose –

+ Trip

ShortingBars

T

2

2

2

2

1

1

8

8

8

9

8

9

1

3

5

7

9

11

13

15

17

19

21

23

25

27

2

4

6

8

10

12

14

16

18

20

22

24

26

28

Trip

Va

Vb

Vc

A

B

C

N

SEF

+ Trip

52A 52B

+ Close

Close PB

CB ClosedInput

Input

CB Open

Trip PB

P991 P891P145

(Description of ANSI code nos. see Function Overview)

Reduce engineering and wiring costs with this single box feeder management relay

Typical P145 Scheme application

MAIN FUNCTIONS

Protection functions are autonomous and can beindividually configured or disabled to suit a particularapplication.

> Phase Overcurrent

Four independent stages are available for each phaseovercurrent element and the two ground fault elements.The first ground-fault element operates from measuredquantities and the second element operates fromderived quantities calculated from the three phasecurrents.Each stage may be selected as non-directional ordirectional (forward/reverse). All stages have definitetime delayed characteristics and two of the stages mayalso be independently set to IDMT trippingcharacteristic. The IDMT stages have a programmablereset timer for grading electro-mechanical, to reduceautoreclose dead times and to reduce clearance timeswhere intermittent faults occur.

4>5

A voltage controlled overcurrent function can beenabled on the first two stages of the main phaseovercurrent elements. Voltage controlled overcurrentprovides back-up protection for remote phase faultswhilst remaining insensitive to load.

The directionality of the ground fault elements isprovided by either residual voltage or negativesequence voltage polarising.

> Negative Sequence Overcurrent

Four independent stages are available and eachstage may be selected as non-directional or directional(forward/reverse). All stages have definite time delayedcharacteristics and two of the stages may also beindependently set to IDMT tripping characteristic.Directionality is achieved with negative sequencevoltage polarising.

> Sensitive Earth Fault

A separate four stage sensitive ground fault element isprovided and is selected as non-directional ordirectional.(forward or reverse). Directionality of theelement is provided by the residual voltage polarising.As an alternative, a directional I cos ϕ characteristiccan be used for Petersen coil ground fault protectionusing the sensitive ground fault input. A directional I sin ϕ characteristic is also available for protection ofinsulated systems.

> Neutral Admittance Protection

Three single stage elements are provided for non-directional over-admittance, non-directional/directionalover-conductance and non-directional/directional over-susceptance.

> Restricted Earth Fault

Restricted earth fault protection is provided forprotection of transformer winding against ground faultsand may be configured as either high impedance orlow impedance biased differential.

DIFFI

BIASIs2I

s1IK1

K2

Operate

Restrain

K1 0% to 20%

K2 0% to 150%

s1I 0.08 to 1. 0In

s2I 0.10 to 1. 5In

IEEE/US curves

TD = 7

IEC/UK curves

TMS = 1

IEEE MIIEEE VI

IEEE EIUS CO8

US CO2

100101

Current (Multiples of Is)

0.1

1

10

100

Ope

ratin

gtim

e (s

)

UK LTI

IEC SI

IEC VI

IEC EI

1000

100

10

1

0.1100101

Current (Multiples of Is)

Ope

ratin

gtim

e (s

)

RECT

REF biased differential characteristics

Choice of IDMT characteristics

Use MICOM P145 for rapid and selective clearance of system faults.

> Check Synchronism

An adaptive two stage check synchronism function isavailable for use in conjunction with automatic ormanual (re)closure. This function also providesadvanced signal indication of system conditions andcan for example be used in situations where slipfrequency and phase angle for synchro check changesunder certain system conditions.

> Circuit Breaker Failure Protection

Two stage circuit breaker failure protection may beused for tripping upstream circuit breakers and re-tripping of the local circuit breaker if required. Thecircuit breaker failure logic may also be initiated from asingle pole condition from external devices if required.

> Voltage Transformer Supervision

Voltage transformer supervision is provided to detectloss of one, two or three VT signals, providingindication and inhibition of voltage dependentprotection elements. An optically isolated input mayalso be configured to initiate the voltage transformersupervision alarm and blocking when used with MCBsor other external forms of voltage transformersupervision.

> Current Transformer Supervision

Current transformer supervision is provided to detectloss of phase CT signals and inhibit the operation ofcurrent dependent protection elements.

> RMS Thermal Overload

Thermal overload protection provides both alarm andtrip stages. The thermal element may be set with eithera single time constant characteristic for the protectionof cables or dry transformers, or a dual time constantcharacteristic to protect oil filled transformers. In theevent of loss of auxiliary supply, the thermal state isstored in non-volatile memory.

> Under/Overvoltage

Under/overvoltage protection may be configured tooperate from either phase-phase or phase-neutralquantities. Two independent stages with definite timeelements are available and one of the stages can alsobe configured as an inverse characteristic.

> Residual Overvoltage

Residual overvoltage protection is available fordetecting ground faults in high impedance groundedor isolated systems. The neutral voltage is derivedfrom the three phase voltage inputs. Two independentmeasuring elements with definite time characteristicsare available, one of the elements can also beconfigured to have an inverse characteristic.

Negative sequence overvoltage protection provideseither a tripping or an interlocking function, upondetection of unbalanced supply voltages

> Under/Over Frequency

Two independent definite time stages of overfrequency and four of under frequency are provided.A time delayed rate of change of frequency elementis provided and can be used to accelerate loadshedding during severe system disturbances.

> Autoreclose

The P145 provide three-pole multi-shot autoreclosing.The user may select a single, two, three or four shotautoreclose cycle, with independently settable deadtimes and reclaim time. Autoreclose can be initiatedfrom the internal protection elements or from externalprotection via an opto input. Advanced featuresinclude live line working and sequence co-ordination.

Dead Volts

Live Volts

NominalVolts

Check SyncStage 2 Limits

RotatingVector

V LINE

Check SyncStage 1 Limits

0º

V BUS

±180ºSystem Split

Limits

Adaptive Check Sync functionality

6>7

CONTROL AND INDICATION

> Programmable Scheme Logic

Programmable scheme logic allows the user tocustomize the protection and control functions. It is alsoused to programme the functionality of the opticallyisolated inputs, relay outputs and LED indications. Theprogrammable scheme logic comprises of gate logicand general purpose timers. The gate logic includesOR, AND and majority gate functions, with the ability toinvert the inputs and outputs, and provide feedback.The programmable scheme logic is configured usingthe graphical MiCOM S1 PC based support software.

> Function Keys

Ten function keys are available for implementingscheme control functionality. The function keys operatein two modes, normal and toggled, and activateassociated signals in PSL that can easily be used tocustomize the application. The following examplesillustrate how scheme functionality can easily beimplemented for use with the function keys.

• Remote CB control enable/disable

• Auto-reclose enable/disable

• Sensitive earth fault enable/disable

• Auto-reclose lockout reset

Each function key has an associated tri-color LED (red,green, yellow) allowing for clear indication of theassociated function's state.

> Circuit Breaker Control

Circuit breaker control is available from the front paneluser interface, optically isolated inputs and remotely viathe substation communications. Blocking of Circuitbreaker control can also be done via the function keyswhen programmed in PSL.

> Indication

Eighteen tri -color LEDs are available for userprogramming. The LED colors (red, green or yellow)are driven via digital databus signals in PSL and canbe programmed to indicate up to four conditions/statesfor example.

• Off- Not in service,

• Red- CB closed,

• Green-CB open,

• Yellow-CB not healthy

Programmable scheme logic editor (MiCOM S1) indicating function key application.

PLANT SUPERVISION

> TRIP CIRCUIT SUPERVISION

Supervision of the trip circuit in both circuit breakeropen and closed states can be realised using theoptically isolated inputs and programmable schemelogic.

> CIRCUIT BREAKER STATE MONITORING

An alarm will be generated if there is a discrepancybetween the open and closed auxiliary contacts of thecircuit breaker.

> BROKEN CONDUCTOR

The broken conductor protection detects unbalancedconditions caused by broken conductors, maloperationof single phase of switchgear or by single phasingconditions. It operates on the ratio of I2 to I1.

> CIRCUIT BREAKER CONDITION MONITORING

The circuit breaker condition monitoring features include:

• Monitoring the number of breaker trip operations

• Recording the sum of the broken current quantityΣIX, 1.0 ≤ x ≤ 2.0

• Monitoring the breaker operating time

• Fault frequency counter

Master Clock(GPS)

Modem(remote access)

EAI232(local access)

IRIG-Bport

P145

Px20

Px30

Px20Px30

Mx20

SCADAInterface

SCADA Interface

INFORMATION INTERFACES

Two communication ports are available as standard; arear port providing remote communications and a frontport providing local communications.

The front RS232 port has been designed for use withMiCOM S1, which fully supports functions within therelay by providing the ability to programme the settingsoff-line, configure the programmable scheme logic,extract and view event, disturbance and fault records,view the measurement information dynamically andperform control functions.

The default remote communications are based onRS485 voltage levels. Any of the protocols listed belowcan be chosen at the time of ordering.

> Courier / K-bus (optic interface also available)

> Modbus (optic interface also available)

> IEC60870-5-103 (optic interface also available)

> DNP 3.0 (optic interface also available)

> IEC 61850 (over 100 Mbit/s fiber/copper Ethernet)

IEC 61850 is available when the optional Ethernet portis ordered. IEC 61850 offers high-speed dataexchange, peer-to-peer communication, reporting,disturbance record extraction and timesynchronization.

An optional second rear courier communications portis available which may be configured as RS232,RS485 or K-Bus.

Integration of P145 into asubstation control system

P145 provides up-to-date versatile communication options.

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AREVA T&D Worldwide Contact Centre:http://www.areva-td.com/contactcentre/Tel.: +44 (0) 1785 250 070

www.areva-td.comwww.areva-td.com/protectionrelays

DEVICE TRACK RECORD

>> KCEG 140 - First numerical feeder relay launched in 1990 and over 20000 units sold.

>> MODN launched in 1998 and over 2000 sold units.

>> P14x MiCOM series introduced in 1999.Worldwide application, with over 10000 units delivered.

>> Introduction of phase II hardware of MiCOM P14x in 2002.

>> Addition of UCA2 protocol and ethernet port in 2004

>> Addtion of IEC 61850 protocol in 2006

Our policy is one of continuous development. Accordingly thedesign of our products may change at any time. Whilst everyeffort is made to produce up to date literature, this brochureshould only be regarded as a guide and is intended forinformation purposes only. Its contents do not constitute an offerfor sale or advise on the application of any product referred to init. We cannot be held responsible for any reliance on anydecisions taken on its contents without specific advice.