Catalogo Familia PZ1000

7/27/2019 Catalogo Familia PZ1000

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PZ-1000 DISTANCE PROTECTION RELAY


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The PZ1000 family of relays are digital distance protection devices especially suitablefor primary protection of simple or double overhead transmission and subtransmission

lines (high & medium voltage). Their advanced multiprocessor design and rapid signal

processing algorithms make them fast acting and safe. They maintain the reliability and

performance required to handle transmission and distribution networks.

The family is made up of 3 groups of equipment: advanced, intermediate, and basic,with different functions, which enable more or less advanced applications to be imple-mented.

PZ1000-A (Advanced): The PZ1000-A features a full range of protection functions

which enable it to be used in applications of all types, including transmission lines. It

has 4 MHO characteristic zones plus 5 quadrangular characteristic zones for

phase-phase and phase-earth faults. It also has pilot protection schemes, breaker

failure protection and stub protection.

PZ1000-I (Intermediate): The PZ1000-I is the intermediate protection device in the

PZ1000 family. It has 3 MHO characteristic zones for phase-phase and phase-earth

faults. It also has overvoltage unit, a triple pole recloser and syncrocheck. These fea-

tures enable it to be used for primary and/or back-up protection in transmission and

sub-transmission lines.

PZ1000-B (Basic):The PZ1000-B is the basic protection device in the PZ1000 family.

It comprises 2 forward MHO characteristic zones for phase-phase and phase-earth

faults, and an additional directional overcurrent unit for phases and neutral. This model

can be used to protect sub-transmission lines.

The following characteristics are common to all three units:

Trip and close circuit supervision (highly useful for system maintenance work).

Measurement of electrical magnitudes, events, fault reports, oscillograph data

recorder, fault locator, local & long-distance communications, etc., enabling them

to be applied in a wide range of installations.

Possibility of integration in IPC (Integrated Protection & Control) systems through an

open protocol.

One front serial port and two rear serial ports for local or remote communications.

Time synchronisation via demodulated IRIG-B.

Front panel with 12 programmable LEDs and one red/green LED indicating protec-

tion status, plus display and keyboard, enabling information on protection to be

seen and modified.

4 front push-button for breaker maneuver.

The advanced model has more digital inputs and outputs and also has 4 fast digi-

tal outputs for pilot protection.

INTRODUCTION

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PZ - 1000 DISTANCE PROTECTION RELAY


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The PZ1000-A is the most advanced member of the PZ1000

family. It incorporates 4 MHO and/or quadrangular trip charac-

teristic zones and a 5th additional quadrangular zone for phase-

phase and phase-earth faults plus pilot protection schemes,

supervision alarms (pole by pole) and other functions, making it

a top level distance protection.

It also has a breaker failure protection unit and a single pole/triple

pole recloser with up to 4 shots and an increased number of

inputs/outputs. Breaker monitor functions, number of trips, etc.

work pole by pole.

Hardware

4 analogue inputs for voltage and 4 for current (closed

terminals, under request)

16 programmable digital inputs

20 programmable digital outputs: 9 for trips and 11 for sig-

nalling

4 fast outputs for pilot protection

PZ1000-A (Advanced)

Distance protection

Distance protection (21P/21N) with 4 MHO and 5 quadran-gular zones for phase-phase and phase-earth faults: 1for-ward zone, 1 backward zone and 3 programmable forward

/ backward Zone 1 extension Negative sequence directional Pilot protection schemes (85) (by fast outputs or by serial

communication) Enable by single-phase and phase-phase overcurrent

(50P/50PP) Fuse failure (68FF) Power swing (68PS) Load encroachment (68LE) Switch-onto-fault (SOF)

Other protections

Phase and neutral directional overcurrent (67/67N) (2 units)Overvoltage (59) and undervoltage (27) Breaker failure protection (pole by pole) (50BF) Stub protectionThermal image (49) Current unbalance (46/67Q) Homopolar overvoltage (59N)

Monitoring

Breaker monitor (pole by pole) Excessive number of trips (pole by pole)Trip and close circuit supervision (pole by pole) (74TC/CC)Open phase alarm CTs monitoring

Automatisms and commands

Single pole / triple pole recloser (79) Syncrocheck (25) Dead line detection (DLD)Open and close commands Pole discrepancy Programmable logic functions

Data acquisition

V, I, P, Q, cos, frequency and energy measurementOscillograph data recorder Event records Fault records Historical reports Demand maximeter Fault locator (FL)

Settings

The relay has 4 independent setting groups

Functions


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The PZ1000-I protection is the intermediate version of the

PZ1000 family. It has 3 MHO characteristic zones for both

phase-phase and phase-earth faults.

It also includes phase overvoltage and undervoltage protection,

a triple pole recloser with up to 4 shots and a syncrocheck unit.

Hardware




12 programmable digital outputs

PZ1000-I (Intermediate)

Distance protection

Distance protection (21P/21N) with 2 forward zones and 1

programmable forward/backward zone with MHO type trip

characteristic for phase-phase and phase-earth faults. Zone 1 extension

Negative sequence directional

Enable by single-phase and phase-phase overcurrent

(50P/50PP)

Fuse failure (68FF)

Load encroachment (68LE)

Switch-onto-fault (SOF)

Other protections

Phase and neutral directional overcurrent (67/67N)

Overvoltage (59) and Undervoltage (27)

Thermal image (49)

Current unbalance (46/67Q)Homopolar overvoltage (59N)

Monitoring

Breaker monitor

Excessive number of trips

Trip and close circuit supervision (74TC/CC)

Open phase alarm

CTs monitoring


Triple pole recloser (79)

Syncrocheck (25)

Dead line detection (DLD)

Open and close commandsProgrammable logic functions

Data acquisition

V, I, P, Q, cos, frequency and energy measurement

Oscillograph data recorder

Event records

Fault records

Historical reports

Demand maximeter

Fault locator (FL)

Setting groups


Functions


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The PZ1000-B protection device is the basic version of the

PZ1000 family. It has two MHO characteristic zones for phase-

phase and phase-earth faults. It is used mainly to protect sub-

transmission lines.

PZ1000-B (Basic)

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Distance protection

Distance protection (21P/21N) with 2 basic forward zones

with MHO type trip characteristic, for phase-phase and

phase-earth faults. Zone 1 extension

Negative sequence directional


(50P/50PP)

Fuse failure (68FF)

Load encroachment (68LE)

Switch-onto-fault (SOF)

Other protections

Phase and neutral directional overcurrent (67/67N)

Thermal image (49)

Current unbalance (46/67Q)

Monitoring

Breaker monitor

Trip and close circuit supervision (74TC/CC)

CTs monitoring



Open and close commands

Programmable logic functions

Data acquisition

V, I, P, Q, cos, frequency and energy measurement


Event records

Fault records

Historical report

Demand maximeter

Fault locator (FL)

Setting groups


Functions

It includes various distance protection supervision functions and

a directional overcurrent protection as a back-up.

Hardware




12 programmable digital outputs


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Extension of zone 1

Zone 4 is used for tripping and pilot protection

The use of direct sequence voltage as polarization, produces

a backward expansion of MHOs.

Directional overcurrent units

The PZ1000 has 2 additional protection units for phase directio-

nal overcurrent and for neutral directional overcurrent as bac-

kups for the main distance units, thus increasing the operational

reliability of the relay.

Overvoltage / Undervoltage units

The PZ1000 has two three-phase voltage units: one for overvol-

tage and the other for undervoltage. Each phase is analysed

separately.

Homopolar overvoltage

This function protects against faults to earth.

Breaker failure protection

This device cuts in if the switch open signal is not received wit-

hin a programmable time of the order to open being received, or

if current continues to flow.

Stub protection

This protects against faults between current transformers andline isolators configured with a breaker and a half scheme. It is

an overcurrent unit which is activated when the line isolator is

open.

Thermal image

It protects the line against thermal overloads, calculating the

temperature depending on the current and recent load condi-

tions of the protected unit.

Current unbalance

This device protects the line against unbalances produced in the

current as consequence of power system anomalies or unba-

lance loads. This function is selected by setting as directional or

no directional.

All these characteristics are supported by other protection

and supervision functions which ensure the safe operation of

the protection device.

Negative sequence directional unit

All impedance units are supervised by a negative sequence

directional unit which indicates the direction of the fault.

Pilot protection schemes

Via communication with other terminals, the following protection

schemes are possible:

I Staggered tripI Permissive overreach: POTT

I Permissive underreach: PUTT

I Directional block: DCB

I Directional unblock: DCUB

Additional schemes:

I ECHO (for permissive schemes)

I Reverse direction blocking

I Weak infeed

I Direct transfer trip

The pilot protection is executed via digital inputs or serial com-

munication


This enables the distance unit if the current exceeds pre-set sin-

gle-phase or phase-phase thresholds.

Fuse failure

This blocks the distance unit if the disappearance of any voltageis detected. The directional unit and/or the voltage unit can also

be locked depending on settings.

Power swing

This blocks the phase-phase distance units and gives power

swing trip, if power oscillation is detected.

Load encroachment

This blocks the phase-phase distance units if the impedance

detected is within the load zone defined by the user.

Switch-Onto-Fault

This sets off an instant non directional three-phase trip when the

switch closes on a fault in the line.

DISTANCE PROTECTION

OTHER PROTECTION

FUNCTIONS

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Breaker monitoring (for each pole)

An event is generated when the SkI2 meter for any phase exce-eds the threshold set.

Trip and close circuit supervision (for each pole)

This detects any anomaly in the circuits with the switch open orclosed.

Excessive number of trips (for each pole)

This generates an event and sends a signal to the control unit

when the trips per phase exceed a preset number in a set time.

It blocks the recloser when the set number is exceeded.

Open phase alarm

This sets off an alarm when an open phase is detected.

CTs monitoringThis generates an alarm when detecting a failure in a current

input channel (only for models with In calculated in the own line).

Single pole/triple pole recloser

Programmable up to 4 shots

The first shot is single/triple pole and the rest are triple pole

(single pole only on PZ1000-A)

Different times for each shot

Operation counter for each shot

Engaged/disengaged by setting, input andcommunications

Syncrocheck

This function compares the voltage signals for one phase (in

modulus and argument) on both sides of the switch, and permits

the switch to be closed when the pre-set conditions are met. It

can be used for both manual and automatic closing.

The angle difference is calculated compensating the breakers

closing time.


This function detects the disconnected phases of a line, genera-

ting a signal.

Pole discrepancy

This unit checks the pole status concordance, causing three pole

opening after exceeding the set time with any pole (not the three)

opened.

Programmable logic functions

The user can configure up to 6 logic signals which can be assig-

ned to output relays and LEDs via the SIPCON Protections soft-

ware.

MONITORING FUNCTIONS

AUTOMATISMS AND COMANDS

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Measurement

The PZ1000 protection relay measures the following magnitudesin real time:

Per phase and neutral currents (1%)

Average current (1%)Single and compound voltages per phase (0,5%)

Average single and compound voltages (0,5%)

Frequency (0,01Hz)

Active and reactive power levels and power factor (1%)

Two-way energy (Class 5)

Note1: Other accuracies on demand.

Note2: Depending on models, equipments include external battery

voltage measurement.


Depending on the model, the non volatile memories of PZ1000units can store:

I 20 records for 30 cyclesI 10 records for 60 cycles

Each record comprises the samples from 8 analogue signalsand the status of 16 selectable digital signals

Tripping and preliminary start-up are configurable

The disturbances are collected and exported in COMTRADE

format.

Event records

Queue of 200 events stored in non volatile memory can be reco-vered in text format on PC.

Each event is accompanied by:

I Date and time of occurrenceI Descriptive code of eventI Level of electrical parameters (voltage and current) at the time

of occurrence

Fault records

The last 9 faults are stored in the non volatile memory with thefollowing data:

I Date and time of start-up, beginning and end of faultI Pre-fault and fault levels of electrical parametersI Duration and type of faultI Units engagedI Fault distanceITrip zone and / or pilot trip

Historical reports

A queue of 100 historical reports is stored in the non volatilememory, covering maximum and minimum average current andaverage voltage levels within a programmable time window.

Fault locator

The fault locator processes the information gathered on each faultand calculates the distance to the fault location.

Self-testing

The PZ1000 digital protection relay runs the following ongoingself-diagnostic checks:

Software running

Power supply voltage

HardwarePicking-up of measurements

Failures detected by self-testing, are signalled by any of the dou-ble outputs (configurable).


DATA ACQUISITION


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The PZ1000 units have the following user communication ele-

ments:

Display / keyboard

Featuring:

2 line, 16-character LCD

16-key keyboard

12 programmable LED indicators and 1 two-colour alarm LED

4 push-button that can be deactivated by setting:

This permits:

Displaying of inputs, measurements, dates and times, statisti-

cal data and latest fault.

Displaying and modification of settings and active table, assig-

nation of inputs, outputs and LEDs.

Comunications

The unit has:

1 front serial port

2 rear serial ports (1 optional), for local and/or remote access to

protection and monitoring information.

These outputs can provide all the information available on the

protection device, and can be used to modify settings of all typesvia SIPCON-protections software by TEAM ARTECHE.

The PZ1000-A also features an optional rear series output for

pilot protection.

MAN-MACHINE INTERFACE

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TEAM ARTECHE uses the SIPCON-Protections program, devel-

oped for PCs running under WINDOWS. This program allows

clear, simple dialogue with the unit for access to the information

stored in it and for adjustment.

All configuration accesses are password protected to preventtampering by unauthorised personnel.

The outstanding features of the SIPCON-Protections program

include the following:

Automatic detection of the unit with which it is in dialogue.

Unit status display via status screens

Presentation and modification of settings

Filling and presentation of all information stored by the relay:events, faults, historical data, oscilloscope readings, etc.

SIPCON Protections is compatible with the software used inTEAM ARTECHEs integrated protection and monitoring sys-

tems, and can be incorpora-ted into them as just one more func-

tion module.

SOFTWARE


Breaker closure

Breaker open

Local / Remote

Maneuver permission


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The illustration shows the application of a PZ1000-A relay to

protect overhead lines powered from both ends.

In this protection scheme the pilot protection function is used. If

rapid clearance on 100% of the line is not needed, model

PZ1000-I, which does not have remote protection, can be used.

The illustration shows the application of an advanced model

PZ1000-A unit, to protect a breaker and a half scheme, in wich

stub protection is used to protect against faults between current

transformers and the isolator, when that isolator is open.

The existence of three switches and the need for a breaker fai-

lure unit, recloser and syncrocheck for each of them, is handled

by using TEAM ARTECHEs PL-70 single function devices:

PL-70 SY: For the syncrocheck function.

PL-70 FI: For the breaker failure function.

PL-70 IT: For the recloser function.

APLICATIONS

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PROTECTION OF OVERHEAD LINES WITH POWER SUPPLY FROM BOTH ENDS

STUB PROTECTION



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DISTANCE PROTECTION (21)

Settings Range Step

Phase to earth Zones 1 to 4 () 0.01-300.00 0.01

Phase to phase Zones 1 to 4 () 0.01-300.00 0.01

Note: Settings for all 4 zones are independient

MHO Reach

Settings Range Step

Phase to earth reactance Zones 1 to 5 () 0.01-300.00 0.01

Phase to earth resistance Zones 1 to 5 () 0.01-300.00 0.01

Phase to phase reactance Zones 1 to 5 () 0.01-300.00 0.01

Phase to phase resistance Zones 1 to 5 () 0.01-300.00 0.01

Note: Settings for all 4 zones are independient

Settings Range Step

Zone 1 modulus 0.01-50.00 0.01

Zone 1 angle (deg) 0-3590 10

Zone 2 modulus 0.01-50.00 0.01

Zone 2 angle (deg) 0-3590 10

Other zones modulus 0.01-50.00 0.01

Other zones angle (deg) 0-3590 10

Mutual comp. zone 1 KMO modulus 0.01-300.00 0.01

Mutual comp. zone 1 KMO angle 0-3590 10

Mutual comp. zone 2 KMO modulus 0.01-300.00 0.01

Mutual comp. zone 2 KMO angle 0-3590 10

Mutual comp. other zones KMO modulus 0.01-300.00 0.01

Mutual comp. other zones KMO angle 0-3590 10

Cuadrilateral Reach

Zero Sequence Compensation

Settings Range Step

Zone 1 phase to earth (s) 0.0-100 0.01




Zone 5 phase to earth (s) 0.0-100 0.01Zone 1 phase to phase (s) 0.0-100 0.01

Zone 2 phase to phase (s) 0.0-100 0.01




Timming

Settings

Phase to earth fault unit MHO, Cuadrilateral

MHO & cuadrilateral, nonePhase to phase fault unit MHO, Cuadrilateral

MHO & cuadrilateral, none

Single pole trip YES/NO

General Setting

Settings

Enable (independient) YES/NO

Single phase threshold (A) (0.2-30) In 0.1

Phase-phase threshold (A) (0.2-30) In 0.1

Def. time (s) (independient) 0.00-10 0.01

Settings Range

Zone 2 No

Fordward

Backward with tripBackward without trip

Zone 3 No

Fordward

Backward with trip

Backward without trip

Zone 4 No

Backward with trip

Backward without trip

Zone 5 No

Fordward

Backward

Non-directional

Single Phase / Phase-Phase Overcurrent

Settings Range Step

Scheme type - Staggered trip

- Permissive overreach

- Permissive underreach

- Directional block

- Directional unblockRTP input dropout time 0.00-1.00 0.01

Block additional delay (s) 0.00-1.00 0.01

Loss of guard delay 0.00-0.15 0.01

ECHO enabled YES/NO

Min. RTP delay fo ECHO (s) 0.00-10 0.01

Reverse zone block enable YES/NO

Reverse zone block delay 0.00-10 0.01

Weak infeed enable YES/NO

Direct trip enable YES/NO

Pilot Protection Schemes

Overreaching Direction

Settings Range Step

Enable YES

NO

YES + Z5

YES - Z5

Inner X () 0.01-300.00 0.01

Inner R () 0.01-300.00 0.01

Outer X () 0.01-300.00 0.01

Outer R () 0.01-300.00 0.01

Direct sequence threshold (A) (0.2-30) In 0.1

Activation time (s) 0.01-50.00 0.01

Imax threshold (A) (0.2-30) In 0.1

I2/Imax ratio 10-50 0.1

Z1, Z2, Z3, Z4, Z5 zone lockout YES/NO

Power Swing (68PS)

SETTINGS

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Settings Range Step

Enable YES/NO

Negative seq. threshold (V) 10.00-165.00 0.1

Negative seq. threshold (A) (0.2-30) In 0.1

Fuse Failure (68FF)

Settings Range Step

Enable YES/NO

Negative sequence threshold (V) 10.00-165.00 0.1

Negative sequence threshold (A) (0.2-30) In 0.1

Open Phase Alarm

Settings Range Step

Enable YES/NO

I1 threshold (A) (0.2-30) In 0.1

Impedance ()

(indepen. forward & reverse)

0.01-300 0.1

Angle + (gnd)


0-3590 10

Angle - (gnd)


0-3590 10

Load Enroachment (68LE)

Settings Range Step

Enable NO

YES+Z2

YES+Z5

Posit ive sequence threshold (V) 10.00-165.00 0.1

Positive sequence threshold (A) (0.2-30) In 0.1

Switch-Onto-Fault


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PHASE AND NEUTRAL DIRECTIONAL ELE-MENTS (67)

RECLOSER (79)Settings Range Step

Reclose type selection Single pole, triple pole, sin-

gle/triple pole, dependent

Number of programmed shots 1-4 1

Single pole 1st

shot time (s) 0.1-20 0.1

Triple pole 1st

shot time (s) 0.1-20 0.1

2nd

shot time (s) 1-300 0.1

3rd

shot time (s) 1-300 0.1

4th

shot time (s) 1-300 0.1

Sec. t. after single pole closing 1-300 0.1

Sec. t. after triple pole closing 1-300 0.1

Sec. t. after manual pole closing 1-100 0.1

Synchronism time delay (s) 1-300 0.1

CLOSURE PERMISSION AFTER TRIPSettings Range Step

Zone 1 YES/NO

Zone 2 YES/NO

Zone 3 YES/NO

Zone 4 YES/NO

Phase inst. YES/NO

Phase timed YES/NONeutral inst. YES/NO

Neutral timed YES/NO

Enable extension zone 1 YES/NO

Ext. factor of zone 1 phase to phase fault 0.1-3 0.1

Ext. factor of zone 1 phase to earth fault 0.1-3 0.1

Inst . neutral locking after monopolar trip YES/NO

1st timed neutral locking after monopolar trip YES/NO

Inst. unbalance locking after monopolar trip YES/NO

Timed unbalance locking after monopolar trip YES/NO

Settings Range Step

Timed enable NO, YES, YES + DropoutTimed pickup (0.2-4) In 0.1

Response type Definite time

Normal inverse IEC

Very inverse IEC

Extr. inverse IEC

User IEC (mod.)

Normal inverse ANSI

Very inverse ANSI

Extr. inverse ANSI

User ANSI (mod.)

Time index

ANSI

IEC-BSC

0.5-30

0.05-1.09

0.1

0.01

Definite time 0-100 0.1Torque control YES/NO

Instantaneous enable YES/NO

Instantaneous pickup (0.2-30) In 0.1

Instantaneous additional time 0-10 0.01

Torque control YES/NO

Negative/zero sequence angle 0-3590 10

Directional lockout Vpol

Documents

Catalogo Familia PZ1000