rtu applications marian kuruc protection& communication ... · each sectionalizerdetects and...

Marian KurucOstrava 2015

RTU applications

protection & communication

www.elvac.eu

RTU protections

Energetics

RTU

Overhead lines

Reclosers

Sectionalizers

Cable lines

Fault currents indicator

Substations

Telemetry

Protection functions

Functional interlocks

Automatic standby operation (MV, LV)

www.elvac.eu | www.rtu.cz

RTUs for control, protection, data acquisition and communication

Content

Own products

RTU

Circuit breaker equipped with a mechanism that can automatically close the breaker after it has been opened due to a fault.Protections used:

Earth fault (Wisher, conductance, wattmetric, connection of the neutral resistor)OvercurrentShort circuit


Overhead lines - reclosers


Own products

Recloser Tavrida - Nižné Ružbachy (SK) - 300/220Recloser GVR Whipp & Bourne

RTU

Sectionalizer is not rated to interrupt fault currentEach sectionalizer detects and counts fault current interruptions by the recloser. After a pre-determined number of interruptions, the sectionalizer will open, thereby isolating the faulty section of the circuit, allowing the recloser to restore supply to the other non-fault sections.Protections used:

Earth faultOvercurrentShort circuit


Overhead lines - sectionalizers


Own products

Sectionalizer - Hať (CZ)

RTU

ConfigurationRTU7M with EP card - RTU7M EP-3UA/2.5/3-1U/100/120-4I/1A/30A-IEPG7 (7V AC / 45 mA AC) + HP amplifier (up to 20 A / 300 V AC)Testing of RTU in lab by replaying of real fault record captured by another RTU unitProtections used:

Conductance, wattmetric


Example – earth fault simulation


Own products

RTU

Indicates the passage of fault currentReduce service interruptions by identifying the section of cable that has failedProtections used:

Earth faultOvercurrentShort circuit


Cable lines – fault currents indicators


Own products

RTU

Controlling and data acquisition of:Digital inputsDigital outputsAnalog inputs

GPS time synchronizationCommunication protocols with SCADA:

IEC 60870-5-101, IEC 60870-5-104DNP3HioCom2

Communication protocols with lower-level:IEC 60870-5-103, IEC 60870-5-104DNP3Modbus RTU/TCPHioCom2

Main and backup communication


Substations – telemetry


Own products

Substation in Sofia (BG) – centralized solution

RTU

MV, LV substations in factories and electricity distribution companiesConnection to SCADA MKDProtections used:

Earth faultOvercurrent - time (in)dependentShort circuit


Substations – protection relay


Own products

RTU

Helps an equipment operator avoid mistakes ("mistake-proofing„), prevent incorrect operation by the userMechanical, electrical and programmed interlocksExample:

Bay interlocksEarthing switch closing: associated circuit breaker must be openLoad break switch closing: earthing switch must be open

Substation interlocks – across all baysReactive power compensation capacitors must be connected to the samebus system (A or B) as a feederBus coupler breaker must be kept close during bus transfer operation

Use of RTU expressions for interlocks


Substations – functional interlocks


Own products

RTU

The goal is to provide the automatic transfer of power for its associated load group from a normal power source to an alternate power source in the event the normal source failsUse of RTU expressionsReferences:

On Semiconductor, Rožnov pod Radhoštěm (CZ) - ongoingZápadoslovenská distribučná (SK)Elektrárna Třebovice (CZ)


Substations – Automatic standby operation (MV, LV)


Own products

RTU communication

Energetics

RTU

Centralized solution

Decentralized solution:

Serial - RS-485, CIR

ETH

100BaseFX



Content

Own products

Communication – centralized solution

One (or more) 19“ RTU units in one rack and connected using RS-485 or ethernet

Own productswww.elvac.eu | www.rtu.cz

RTU RTUs for control, protection, data acquisition and communication

Pros:One (or more) 19“ RTU unit with indirect cards DI, DO, AIEasy integration of substation oriented interlocking functions. Hundreds of signals/measurements

Cons:CablingOnly one signalling panel ESP7

Reference:ČEZ Bulgaria – substations in Sofia, Telegyr system replacement

Communication – centralized solution





Communication – decentralized solution

RS-485 – small applicationsConcentrator – main

Concentrator – backup

SCADA

RTU User Center

- remote parametrization

- fault records downloading

RTU User Center

- local parametrization

- fault records downloading




CIR – optical redundant circle




Pros:Galvanically isolated redundant communicationEasy integration of bay oriented interlocking functionsSignalling panel ESP7 for each RTU unitTens of RTUs on one communication circle

Cons:1 bay = 1 RTU

Reference:ČEZ - Energetika Vítkovice – approx. 400 pcs RTUDEZA – substations RVN0.2, RVN0.3, RVN0.0, RVS – approx. 80 pcs RTUEnergetika Třinec – approx. 80 pcs RTUElektrárna Třebovice – 20 pcs RTU




100BaseFX




Pros:Standardized and galvanically isolated industrial communication – possibility to connect 3rd party devicesEasy integration of bay oriented interlocking functionsSignalling panel ESP7 for each RTU unitTens of RTUs on one communication circle

Cons:1 bay = 1x RTU + 1x 100BaseFX media converter

Reference:Not installed yet



Communication – common features

Remote parametrization over GPRS/3G networkFault records downloadingDefinování hlavní a záložní trasy na vzdálenou SCADAPossibility to add a local SCADA MKDTime synchronization – GPSConnection of existing devices – IEC103, IEC104, DNP3, Modbus atd.

O Společnosti

Thank you for your attention

www.elvac.eu

Hasičská 53, 700 30 Ostrava - HrabůvkaCzech Republic

Tel.: +420 597 407 100E-mail: [email protected], www.rtu.cz

RTU

complete settings of RTU7C without SW RTU UC

now we are preparing for the next RTU


ELVAC RTU configuration web


Own products

rtu applications marian kuruc protection& communication ... · each sectionalizerdetects and...

Documents