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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
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Overhead lines - reclosers
RTUs for control, protection, data acquisition and communication
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
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Overhead lines - sectionalizers
RTUs for control, protection, data acquisition and communication
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
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Example – earth fault simulation
RTUs for control, protection, data acquisition and communication
Own products
RTU
Indicates the passage of fault currentReduce service interruptions by identifying the section of cable that has failedProtections used:
Earth faultOvercurrentShort circuit
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Cable lines – fault currents indicators
RTUs for control, protection, data acquisition and communication
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
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Substations – telemetry
RTUs for control, protection, data acquisition and communication
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
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Substations – protection relay
RTUs for control, protection, data acquisition and communication
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
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Substations – functional interlocks
RTUs for control, protection, data acquisition and communication
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)
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Substations – Automatic standby operation (MV, LV)
RTUs for control, protection, data acquisition and communication
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)
www.elvac.eu | www.rtu.cz
Substations – Automatic standby operation (MV, LV)
RTUs for control, protection, data acquisition and communication
Own products
RTU communication
Energetics
RTU
Centralized solution
Decentralized solution:
Serial - RS-485, CIR
ETH
100BaseFX
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RTUs for control, protection, data acquisition and communication
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
RTU RTUs for control, protection, data acquisition and communication
Own productswww.elvac.eu | www.rtu.cz
RTU RTUs for control, protection, data acquisition and communication
Own productswww.elvac.eu | www.rtu.cz
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
RTU RTUs for control, protection, data acquisition and communication
Own productswww.elvac.eu | www.rtu.cz
Communication – decentralized solution
CIR – optical redundant circle
RTU RTUs for control, protection, data acquisition and communication
Own productswww.elvac.eu | www.rtu.cz
Communication – decentralized solution
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
RTU RTUs for control, protection, data acquisition and communication
Own productswww.elvac.eu | www.rtu.cz
Communication – decentralized solution
100BaseFX
RTU RTUs for control, protection, data acquisition and communication
Own productswww.elvac.eu | www.rtu.cz
Communication – decentralized solution
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
RTU RTUs for control, protection, data acquisition and communication
Own productswww.elvac.eu | www.rtu.cz
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: sales@elvac.euwww.elvac.eu, www.rtu.cz
RTU
complete settings of RTU7C without SW RTU UC
now we are preparing for the next RTU
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ELVAC RTU configuration web
RTUs for control, protection, data acquisition and communication
Own products
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