Welcome to in Transmission_part2.pdf · Welcome to and state of the art ... New substation design with composite insulation! ... Condition Monitoring and Diagnostics (day –months)!

Welcome to

and state of the art technologyfor electric power transmission

Content – State-of-the-art technology! Introduction to STRI! What is reliability centered design ?! New substation design with composite insulation! Software to optimize & compare availability for

substations! New transmission line design with composite insulation! Software to optimize & compare availability for

transmission line! What is reliability centered maintenance? ! New possibilities with SOLA on line diagnostics! New possibilities with IEC 61850 on line

Compact 400 kV transmission linewith polymer insulators & arrestors

Compact 400 kV transmission linewith half the size and EM radiation

Transition towers for 220 and 400 kVfrom line to cable (s) with polymer




Reliability/Availability Insulation EM Field Dynamic load

Software for optimizing the design of transmission lines

Statistical methods in Line Performance Estimator (LPE)

" Service voltage (pollution and ice)! STRI’s statistical method

" Lightning overvoltages! Back flashover rate (CIGRÉ methods)! Shielding failure rate (CIGRÉ methods)

" Switching overvoltages! Switching surge flashover rate (IEC 60071)

Statistical approach: theoretical basis

1. Pollution stress at site: probability density function f(γ)

2. Probability for flashover at maximum operating voltage: cumulative distribution function P(γ)

3. Multiplication of the f and P and the area under this curve defines the risk for flashover

Stress f(γ) Strength P(γ)

Risk for flashover

Pollution severity(γ)

Stre

ss: d

ensi

ty o

f occ

urre

nce

Stre

ngth

: pro

babi

lity

for f

lash

over

)()( γγ Pf •

Stress f(γ) Strength P(γ)

Risk for flashover

Pollution severity(γ)

Stre

ss: d

ensi

ty o

f occ

urre

nce

Stre

ngth

: pro

babi

lity

for f

lash

over

)()( γγ Pf •

,

Verification for UHV 1150 kV (Russia)

! Field data collected from 40 test stations:! Surface conductivity! NSDD! Flashover voltage of

naturally polluted insulators

Verification by service records -Location of OHL with known service records-

Pollution: LPE vs. service recordsFailure rate per year

Source Max.

voltage [kV]

Lines recorded in service

calculated in LPE

420 1 0-0,1 0,2 420 2 0 0,2 420 3 0 0,01

Statnett (Norway)

300 4 0-0,2 0,1 400 1 0,6 1,0 400 2 1,0 0,5 400 3 0,2 0,5

ESKOM (South Africa) 400 4 0 0,02

126 1 0,4 0,4 NIIPT (Russia) 126 2 1,4 3,0

Lightning: LPE vs. service recordsCountry Line System

voltage Recorded

failure rate in service

Calculated failure rate in

LPE

kV 1/100 km/yr 1/100 km/yr

1 420 0,23 0,10 2 420 0,29 0,38 3 420 0,33 0,09

Norw ay

4 300 0,13 0,36 1 420 0,07 0,04 2 420 0,14 0,14 Sweden 3 420 1,1 0,75

Russia 1 115 1,35* 1,4* 1 400 0 0,08

South Africa 2 400 0,8 0,35

* Double circuit line

Steps in LPE process

Calculates failure rate due to environmental stresses

Calculates successful auto-reclosing rate

Calculates bipolar flashover rate

AC

DC

Temporary faults Permanent faults

Ice

Pollution

Lightning

High altitude

Line sections in LPE

LPE for HVAC Lines

Line Performance Estimator (LPE)Input:Configuration

Environment

! Tower type! Section length! Conductor! Insulator

! Pollution & Ice! Lightning

Line Performance Estimator (LPE)

! Pollution & Ice! Lightning

! Successful autoreclosing rate

OutputFailure rate forline due to:

Availability

Select type of tower from libraryOr create your new

Select type of isolator from libraryOr create your new

Select environment and calculate fault frequency as function of insulator length

Next step: Calculate fault frequency for the whole line

Calculate successful autoreclosingwith and without surge arrester

LPE for HVDC Lines

Configure your HVDC tower

Enter insulator data

Enter environment data

Read the result and modify input data for sensitivity analysis

Input data through testing – Example:800 kV DC pollution testing of V-string

Compare UHVAC and UHVDC 800 kV



transmission line! What is reliability centered maintenance?! New possibilities with SOLA on line diagnostics! New possibilities with IEC 61850 on line

What is Reliability Centered Maintenance?

! Optimum maintenance techniques with on-line monitoring and on-site measurement

! Internet based diagnostics! Including temperature, PD, pollution and

motion analysis! Statistics, trends and fingerprints

! CBM planning! Condition Based Maintenance

! RCM planning! Reliability Centered Maintenance

based on risk, consequence & condition

! Maintenance work with voltage

200 - 800 kV

Industry

Generation

Transmission

Distribution

6 - 200 kV

Stress and ageing of the power system

AGEING

ABNORMALOPERATION

FAULT

REMAINING LIFE TIME FULLASSETVALUE

STRESSMARGIN

! Current withstand! All equipment is designed for a rated continuous load

current and a short circuit withstand limit! Overload with increased temperature and short circuit

with increase mechanical stresses in combination with material ageing could result in accelerated ageing and a failure

! Voltage withstand! All equipment is designed for a rated continuous

operating voltage and LI/SI voltage withstand! Overvoltage in combination with pollution and material

ageing could result in accelerated ageing and a failure! Supervision

! Above conditions has to be supervised

Stress and ageing of the power system

Installed Power

0

500

1000

1500

2000

2500

3000

3500

4000

Y 1950 Y 1960 Y 1970 Y 1980 Y 1990 Y 2000

Year

GW GW

30 GW/year 70 -100 GW/year 70-100 GW year

Total potential = 70 -100 GW new + 70 - 100 GW retro

Life extention or replacement

2% = 70 GW/year

2000 GW

Replace

Retrofit

New

Install Base

Installed eq. 110 -800 kV WORLD TOTALSubtotal GIS & Modules 35000Subtotal LTB 350000Subtotal DTB 90000Subtotal GCB 6000SUB TOTAL CB 481000Current Transformers 1000000Voltage Transformers 500000

STRI Diagnostics Example:! Generators & Large motors:

! Protection: Limiters, O/C, EF, Differential, Z<, Under Excitation, O/V, U/V, Frequency, Negative sequence, P<, Pr

! Evaluate different methods for diagnostics! PD, Temperature, Vibration

! Propose optimum method

! Transformers and Reactors:! Evaluate different methods for diagnostics

! Protection/Signal: Oil level, pressure, temperature, fan cooling,Buchholz, O/C, O/V, O/L, Z<, Differential, E/F, Restricted E/F, V/Hz

! Oil & Gas, Moisture, Level, Temp etc. (E.g. GE-Hydran, ABB TEC,Doble) fan cooling, oil flow

! PD, tan delta (E.g. LDIC, Doble)! SFRA Sweep Frequency Response Analyzer Eg. PAX, Doble)

! Propose maintenance procedure

STRI Diagnostics Example:

Thermal Ageing at the Hot-Spot

1,00E-11

1,00E-10

1,00E-09

1,00E-08

1,00E-07

1,00E-06

1,00E-05

1,00E-04

1,00E-03

1,00E-02

1,00E-01

1,00E+00

1,00E+01

1,00E+02

1,00E+03

1,00E+04

1,00E+05

1,00E+06

1,00E+07

-50 0 50 100 150 200 250

Hot-Spot Temperature THS

IEC IEEE

−

= 698T

IEC

HS

2F

( )

+

−= 273T

15000383

15000

IEEEHSeF

IEC is used to calculate ageing for normal paperIEEE is used to calculate ageing in thermally upgraded paper

In main PC screenAccumulated in years is the total accumulated ageing of the paperRelative now is the present ageing speed in %

Ageing calculation gives a possibility to compare the thermal ageing of different transformers, for overload or replacement planning

! Moisture!GE Hydran!PAX Diagnostics IDAX 206!DOBLE IDD Moisture in oil!KELMAN TRANSFIX

! Gas detection!Buchholz!GE Hydran!DOBLE IDD DGA!KELMAN TRANSFIX

Example of oil and gas monitoringfor transformers

STRI Diagnostics Example:! Circuit Breakers:

! Protection: Breaker Failure, Unbalance, (Point-on-wave)! Evaluate different methods for diagnostics (SF6, Oil, Vaccum)

! Time, Speed, Travel, Coil/motor current, Vibration ,t x I2 ,No., SF6! E.g. Programma, Elcon, Doble, Hathaway,

! Propose maintenance procedure

STRI Diagnostics Example:! Cables:

! Protection: O/C, EF, Pilot wire, Current Diff.! Evaluate different methods for diagnostics

! IR, Temperature! PD

! • Inductive loop! • Capacative sensor! • Inductive UHF-sensor! • Acoustical sensor

! Propose optimum method

STRI Diagnostics Example:! Line joints:

! Protection: Zero & negative sequence! Evaluate different methods for diagnostics

! IR, Temp, Resistance! Propose maintenance procedure

! Disconnectors:! Protection: Zero & negative sequence, busbar! Evaluate different methods for diagnostics

! IR, Temp, Resistance! Propose maintenance procedure

! Insulators:! Protection: Eartfault & shortcircuit protection! Evaluate different methods for diagnostics

! IR, UV, leakage current/pollution monitoring! Propose maintenance procedure

To be monitored and/or tested:# Line ending and joints (Resistance/Temp/IR)# Conductors (Temperature)# Towers (Corrosion)# Cable ending and joints (PD, Temp/IR)# Arresters (Leakage current)# Earthing switch (Resistance to ground)# Voltage transformer (Oil analysis)# Current transformer (Oil analysis)# Disconnector (Resistance/Temp/IR)# Circuit Breaker (SF6, time, resistance, vibration)# Insulators (Temp/IR/UV/Leakage current)# Power Transformer (PD, Oil and gas analysis)# Generator (PD, temperature, vibration)

200 - 800 kV

Example of Condition Monitoring

Industry

Generation

Transmission

Distribution

6 - 200 kV




Introducing SOLASTRI On Line Analyser

On Line On Line Diagnostics Diagnostics On On Site DiagnosticsSite Diagnostics

CBM & RCMCBM & RCM

My SQL My SQL databasedatabase

SOLA SOLA –– STRI On Line AnalyserSTRI On Line Analyser

SOLA for lines and substations

SOLA SOLA –– STRI On Line AnalyserSTRI On Line Analyser




Grid Owner

InspectorPurchase Order

Report

Website @ STRI

How to get data into database

Selected data

Establish routinesand intervals of maintenance (Best practice)

Maintenance guidline

Rotating time schedulefor Time Based Maintenance

Work order

Environement-impact on-impact from

Reliability &availabilityanalysis

Signals or detected minor faultswith inspection

Fault report

Priority of corrective actions

Work order

Fault statisticsanalysis

Distrurbanceanalysis

Preventive Maintenance Corrective Maintenance

ConditionMonitoring

on-line

Investigationon-site

Diagnostics

Condition Based Maintenance

Othergrid owners

Coordination/OptimisationOperation & Renovation

Maintenance & interruption plan

Customer

200 - 800 kV

Industry

Generation

Transmission

Distribution

6 - 200 kV

Your SOLA Line diagnostics site

! Insulators! Line joints! Towers! ????

! Data base with flexible browser for statistics, trends, mutual dependance per type, age, climate, location manufacturer etc.

200 - 800 kV

Industry

Generation

Transmission

Distribution

6 - 200 kV

Your SOLA system monitoring site

= In critical locations

! Temperature! Leakage current! Ice loading + frost

! On-line monitoring for evaluation of different design and/or early warning to operation

200 - 800 kV

Industry

Generation

Transmission

Distribution

6 - 200 kV

Your SOLA Substation diagnostics site

= In critical substations

! Breakers! Disconnectors! Transformers

! On-line diagnostics for evaluation of trends & fingerprints for early warning to maintenance




! Substation Automation, Control & Protection (ms -s)! An electrical failure should be detected and cleared with

selectivity with milliseconds form the protection! Additional time delayed protection is available for abnormal

conditions and breaker failure! SCADA/EMS (min-hour)

! The SCADA system provides information to the control centre to supervise the operation and to preventdangerous operation. These actions is normally in the range minutes to hours

! Condition Monitoring and Diagnostics (day –months)! Condition monitoring (on-line or on-site) evaluates the

condition and analyses trends of the equipment in order to determine necessary maintenance, renovation or replacement

Supervising the power system

What, Where, When, Who and then How

IED HMI

Station HSI

Control Centrel Office Home Station Anywhere(On line) (On request)

StationAutomation

StationAutomation

Driftcentral Driftcentral

SPA, LON, DNP 3.0, MODBUS, UCA 2, Profibus, IEC60 870-5-103, K-Bus, ZZZ

IEC60870-6 (TASE2)

SCADAIEC60870-5-101IEC60870-5-104DNP 3.0ELCOM 90RP570/571XXX

EnergimätningIEC61107IEC62056IEC60870-5-102YYY

VindkraftIEC51400-25

IEC G703IEEE C37.94WWW

IEC 61850

= IEC 61850

IEC61970 (CIM)

But why do we need so manyprotocols (and protocol converters)?

200 - 800 kV

Industry

Generation

Transmission

Distribution

6 - 200 kV

Your integrated supervision with IEC 61850

SCADAmin. –hours

SASms - s

Time

CM & Diagnosticsdays to months

Replacement Renovation Maintenance

Action

The ability for IED’s from one or severalmanufacturers to exchange information and use

the information for their own functions

The standard shall support different architecture and allow a free allocation of

functions. E.g. it must work equally well for centralized or decentralized systems.

The standard shall be future proof, i.e. it must be able to follow the progress in

communication technology as well as evolving system requirements

Trend: IEC 61850 for protection and control

IED = Intelligent Electronic Device

Vhat is the new IEC 61850 standard?

A global standard for datamodelling and information exchange...

...in Network Automation

Separation allows technical evolution

Aplication:- E.g. protection

Service:- E.g. report

Communication:- E.g TCP/IP Ethernet

Data model

Service model

Mapping

Vhat is 61850 open communication?Base:! ISO/OSI TCP/IP 7 level standard! Ethernet 100 MBps + GOOSE! Common model and language! Common IEC & ANSI standard

More than a protocol:! Structured data model! Meaningful text instaead of code! Flexible architecture with free allocation! Structured configuration of services

New possibilities:! High speed horisontal & vertical integration! Flexible integration & automation! Interoperability between vendors! Optimized & Future proof solutions

Omicron

Areva

Siemens

ABB

IEC 68150 open communication

MMS = Manufacturing Message Specification ISO 9506

GOOSE

! Peer to peer prioriterad kommunikation max 4 ms! En IED skickar infromation med multicasting! Bara en IED som är definierad att lyssna

(prenumerant) får meddelandet

GOOSE = Generic Object Oriented System-wide Events

Vhat is GOOSE?

Vhat is interoperabilty

!Common standrad for!language (Data modell) ! Services (Service modell)!Communication protocol!Communication media!Dataexchange (For engineering and operation)!Conformity test

Comparison with other protocols

Example of data model

IED1/C3CSWI3.Pos.ctIVal

!E.g. Control of breakersLogisk Device namn (Fri)

Logisk Nod prefix (Fri)Logisk Nod klass (Fast)

Logisk node suffix (Fri)Data objekt (Fast)

Attribut (Fast)

FunctionE.g. Distance protection

Config.data

In data Out data

Standardized data exchange

XCBR Breaker

PDIS Distance prot.PIOC Inst. O/C

CSWI Switch control

MMXU Measurement

Examples of locical nodes (~100)

! ACSI = Abstract Communications Service Interface

! ACSI define how data is collected but not where it is located

! En multifunctional IED can be Locical Nodefor several applications

! This alows free allocation of functions to any IED, I.e. centralized or distributed (If the vendor has fully implemnted the ”soft library”)

Vhat is ACSI?

Service for data access och transfer

IEC 61850 configuration! Common language = Substation Configuration

descriptive Language = SCL i XML format! IEC 61850 define four different files

! ICD = IED Capability Description which describes each IED with LN and data

! SSD = System Specification Description with single linediagram and function allocation

! SCD = Station Configuration Description is the completeconfiguration of all IEDs in a substation with process signals and communication structure

! CID = Configured IED Description include complete IED with vendor specific configuration

IEC 61850 configuration

IEC 61850 configuration tool is necessary !

(ABB PCM 600 example)

(Siemens DIGSI4 example)


(Areva MICOM S1 example)


IEC 61850 independent tools

(SCL validator example)


(Ase-systems Visual SCL example)


(Kalki protocol converter example)


(Omicron IEDScout example)

Example Areva! Areva introduced C264

RTU designed for IEC 61850

! Areva has now designedinterfaces for a number of existing IEDs

Example Areva

Example Siemens! Siemens give firmware

upgrade for SIPROTEC4Vhich version is listed inwww.siprotec.com

! EN100 Ethernet interface modul needed

! Optical or electricalEthernet

! IED ring possible with optical

Example ABB! ABB has developed a

complete new productgeneration based on 61850 in the 600 series E.g. REL 670 with a common Application Function Library

! Some existing productscan be connected via modem, e.g. REF 541

Example ABB

!SAS610 Centralized ring

!SAS670 Decentralized ring

Exampel RUGGEDCOM

! RUGGEDCOM has Ethernet switches designed for IEC 61850 which can handle priority tagging and avoid collisions

IEC 61850 conformity by KEMA/UCA

IEC 61850 GOOSE verification

IEC 61850 interoperability

ABB System verification center Several multi vendor applications are now in service

Station Bus IEC 61850-8-1

TCP/IP Monitoring Bus

IEC 870-5-101/104

Remote workplace in the office or in the field

Utility office LAN Utility

WAN/Internet

Utility substation

LAN

Process Bus IEC 61850-9-2

Internet & 61850 in the station

ON-LINE Monitoring Device

Example for control

Example for communication

(ABB IED 670 example)

Free allocation of functions

RBRF50BF

RREC79

MMXUMMTR

RSYN25

CSWI

PTUF81

PTOF81

PSCHPTTR49

POVM59

PVPH24

POCM51/67

PIOC50N

PUVM27PGPF

PIOC50

PEFM51/67N

PDIFREF

PDIFHZ

PDIF87T

PDIF87L

PDIS21

PDIF87B

PDIS21

RREC79

MMTR

PDIS21

POCM51/67

RBRF50BF

RREC79

RSYN25

MMXUMMTRCSWI

PDIF87L

PDIS21

PDIFHZ

POCM51/67

RBRF50BF

RREC79

RSYN25

MMXUMMTRCSWI

PDIF87T

PGPF

PVPH24

B24PDIF 87B Bus differential protectionL6CPDIF 87L Line differential protectionT3WPDIF 87T Transformer differential protectionREFPDIF 87N Low impedance differential protectionHZ PDIF 87 High impedance differential protection

ZMQPDIS 21 Distance protectionPH4POCM 51/67 Overcurrent protectionEF4PEFM 51N/67N Overcurrent protectionPOVM 27/59 Overcvoltage protectionPTUF 81 Under frequency protectionPTOF 81 Over frequency protectionPVPH 24 Over excitation protectionLPTTR 26 Overload protectionPGPF XXX Programmable general current/voltage functionCRBRF 50BF Breaker failure protectionRSYN 25 Synchro checkRREC 79 Auto reclosingCSWI ControlRFLO Fault locatorRADR Disturbance reportingMMXU MeasurementMMTR Pulse counter

Station HSIBase System Gateway

A Bay Protection & ControlSub system 1

B Bay Protection & ControlSub system 1



RBRF50BF

RREC79

MMXUMMTR

RSYN25

CSWI

PTUF81

PTOF81

PSCHPTTR26

POVM59

PVPH24

POCM51/67

PIOC50N

PUVM27

RBRF50BF

PIOC50

PEFM51/67N

PDIFREF

PDIFHZ

PDIF87T

PDIF87L

PDIS21

PDIF87B







RREC79

MMXUMMTR

RSYN25

PTUF81

PTOF81

PSCHPTTR26

POVM59

PVPH24

RBRF50BFCSWI POCM

51/67

PUVM27

PTTR26

PEFM51/67N

PDIFREF

PDIFHZ

PDIF87T

PDIF87L

PIOC50N

PIOC50

PDIS21

PDIF87B

PIOC50N

PIOC50

PDIS21

RBRF50BFCSWI POCM

51/67







RREC79

MMXUMMTR

RSYN25

PTUF81

PTOF81

PSCHPTTR26

POVM59

PVPH24

POCM51/67

PIOC50N

PUVM27

RBRF50BF

PIOC50

PEFM51/67N

PDIFREF

PDIFHZ

PDIF87T

PDIF87L

RBRF50BFCSWIPDIS

21

PDIF87B

RBRF50BFCSWIPDIS

21

RBRF50BFCSWIPDIS

21

RBRF50BFCSWIPDIS

21


Station HSIBase System

Gateway





RREC79

MMXUMMTR

RSYN25

PTUF81

PTOF81

PSCHPTTR26

POVM59

PVPH24

POCM51/67

PIOC50N

PUVM27

RBRF50BF

PIOC50

PEFM51/67N

PDIFREF

PDIFHZ

PDIF87T

PDIF87L

RBRF50BFCSWIPDIS

21

PDIF87B

RBRF50BFCSWIPDIS

21

RBRF50BFCSWIPDIS

21

RBRF50BFCSWIPDIS

21

Station HSBBase System



4 Bay Protection & ControlSub system 1

4 Bay Protection & ControlSub system 2

RBRF50BF

RREC79

MMXUMMTR

RSYN25

CSWI

PTUF81

PTOF81

PSCHPTTR26

POVM59

PVPH24

POCM51/67

PIOC50N

PUVM27

RBRF50BF

PIOC50

PEFM51/67N

PDIFREF

PDIFHZ

PDIF87T

PDIF87L

PDIS21

PDIF87B

Free allocation of functionsIntegrated


Station Protection & ControlSub system 1

RREC79

MMXUMMTR

RSYN25

PTUF81

PTOF81

PSCHPTTR26

POVM59

PVPH24

PIOC50N

PUVM27

RBRF50BF

PIOC50

PEFM51/67N

PDIFREF

PDIFHZ

PDIF87T

PDIF87L

PDIF87B

Station Protection & ControlSub system 2

I/O I/OI/OI/O I/O I/O

RBRF50BF CSWI

POCM51/67

PDIS21PDIS

21POCM51/67

RBRF50BF CSWI

RBRF50BF CSWI

POCM51/67

PDIS21PDIS

21POCM51/67

RBRF50BF CSWI

Free allocation of functionsDistributed

IEC 61850 continues

New energy

Vidkraft:WROT VindturbinrotorWAPC Vindkraft aktiv effektregulator

Vattenkraft:ASPC varvtalsregulatorAMWR aktiv effektregulator

DER – Distribuerad Energi:DFCL BränslecellDRAT DER generatordata

HVAC Transmission

HVDC Transmission

Distribution S/S

Industrial S/S

Electrification

Transmission S/SGeneration

Continuous supply of electrical energy

Sub transmission S/S

Internet & 61850 everywhere

IEC 62271-3 based on IEC 61850for HV Switchgear

IEC 61850 –7-3 and 7.4extension for PQ

IEC 61850 –7-420Extension for DER

IEC 61850 for substations

IEC 61400-25 based on IEC 61850for Wind Power

IEC 62344 based on IEC 61850for Hydro Power Plants

200 - 800 kV

Industry

Generation

Transmission

Distribution

6 - 200 kV

How to optimize supervision of the transmission system with IEC 61850?

SCADAmin –tim

SASms - s

TIME

Condition monitoring and diagnosticsDays- month

Replacement Repair Maintenance

ACTION

So what can STRI do for you?! STRI has a unique competence within the

High Voltage area for both HVAC and HVDC applications with design, application & diagnostics

! In our international projects we are following, testing and verifying state-of-the-art solutions

! Our combination of STRI Testing, STRI Software and STRI Consulting resources makes it possible to assist you in finding an optimum solution to your application – and to verify it

! We are independent and accredited so we can work with you for the best solution available by integrating different manufacturers & technology

What can STRI do to assist you in your implemenation of new technology?

! Independent evaluation and accredited testing of equipment & insulation! System studies to review the effect and feasibility of different alternatives

(HVAC or HVDC, Upgrading HVAC or conversion to HVDC, Wind Power etc.)! Selection of optimum insulation and towers for HVAC and HVDC depending on

electrical and environmental parameters and required availability! Calculation of temporary dynamic load depending on application & weather! Calculation (and measurement) of EM field for different solutions! Implementation of new technology for compact substations & transmission lines! Implementation of high voltage cables including quality assurance & diagnostics! Comparing reliability and availability of different solutions! Evaluating and implementing on-line diagnostics including pollution & weather

monitoring on critical components for Condition Based Maintenance! Evaluate and implement state-of-the-art solution for fault detection & location! Optimized implementation of IEC 61850 for integration of control, protection &

monitoring and to convert data to useful information ! Implement a structured Asset Management process based on Reliability

Centered Maintenance

Accredited for testing and calibrationISO9001 certified for quality system

Learn more on www.stri.se

Learn more on www.stri.se

How do we work ?

Idea!, problem ? or requirement = ! Identification

! Specification

! Calculation

! Allocation

! Implementation

Specification of goal & method

Work package and cost

Time and resource allocation

Presentation and implementation

Your independent partner for high voltage technology

and applications

Thank you for your attention!

Documents

Welcome to in Transmission_part2.pdf · Welcome to and state of the art ... New substation design with composite insulation! ... Condition Monitoring and Diagnostics (day –months)!