1

OVERVIEW OF EMTP STUDIESOVERVIEW OF EMTP STUDIESAND MODEL DEVELOPMENTAND MODEL DEVELOPMENT

AT RTEAT RTE

Alexandre PARISOT

EMTP-RV User Group Meeting

Dubrovnik, Croatia, April 30th 2009

2

RTE is the French Transmission System Operator (U > 50 kV)

RTE : Réseau de Transport d’Electricité

400 kV network

52 759150, 90, 63 et 45 kV

26 322225 kV

21 093400 kV

TRANSMISSION LINES (km)

(PRIMARY)TRANSFORMERS

5290 or 63 kV

35150 kV

887220 kV

276400 kV

3

CHALLENGES FOR RTE : Changes on the generation side : gas, renewables + nuclear plants (EPR)

Ageing of the existing network

Limited public acceptance for new overhead lines

Projects for new EHV links with the surrounding European TSOs

AS A RESULT :

CONTEXT AND EVOLUTION

NEED TO OPTIMIZE THE NETWORK PERFORMANCE NEED TO OPTIMIZE THE NETWORK PERFORMANCE

AND TO ASSESS NEW TECHNOLOGIES/PRACTICESASSESS NEW TECHNOLOGIES/PRACTICES

4

EMTP-RV STUDIES

Insertion of long shunt-compensated EHV cables Compensation scheme Transient and resonant overvoltages Constraints on circuit breakers Protection and control

Uprating transmission lines and substations to higher voltages Impact on insulation coordination

Installation of series capacitors Subsynchronous oscillations (SSR) TRV voltages on the circuit breakers Ferroresonance Protection and control

Refurbishment of IFA 2000 HVDC link between France and the UK Validation of SSR mitigation techniques Validation of the insulation coordination studies Behaviour with AC short circuit Validation of the protection and control system

5

EMTP-RV STUDIES

Study for a future HDVC link with Spain Behaviour under short-circuit conditions Impact on existing protection and control scheme Specification of filter components

Lightning performance of overhead lines Use of line surge arresters and static

Behaviour and impact of onshore and offshore wind farms Behaviour with AC short-circuit Impact on the protection and control systems

…

VOLUME AND RELEVANCE OF THESE STUDIESVOLUME AND RELEVANCE OF THESE STUDIES EMTP EMTP -- RV MODELING EXPERTISE RV MODELING EXPERTISE

NEEDED AMONG ENGINEERING & DESIGN TEAMSNEEDED AMONG ENGINEERING & DESIGN TEAMS

6

EMTP-RV TOOLBOXES

CRINOLINE Electromagnetic compatibility Developed by group of companies

including EDF, RTE, HQ, CEATI

LIPS Flashover rates on overhead lines Developed by HQ and EDF

TRV Studies Automated Transient Recovery

Voltage calculations on CBs Developed by EDF for RTE

EMTPEMTP--RV + EMTPRV + EMTP--RV TOOLBOXES RV TOOLBOXES WILL REPLACE INWILL REPLACE IN--HOUSE SOFTWAREHOUSE SOFTWARE

EGERIE Electrical calculations for

protection studies To be replaced by EMTP toolbox

CAPELINE Earthing grid analysis At technical specification stage

ANALIG Overhead line calculations

(electrical parameters, losses, field calculations)

Electrical calculations with EMTP

7

Substations

OHL & Cables

Substationdesign

HTequipment

Undergroundcables

Overhead lines

Protection andcontrol

P & C schemesand equipment

5

1

6 J-P. TAISNE S. HENRY2

P. MONTPELLIER

2

3

4

54

P. REBUT

RRééseau de compseau de compéétencestences«« éétudes et simulations tudes et simulations

éélectrotechniqueslectrotechniques »»Steering commitee

EMTP USER GROUP AT RTE

Systemoperator R&D

National expertise center

17 EMTP USERS 17 EMTP USERS --CREATED IN 2008CREATED IN 2008

Secretary : A. PARISOT

8

KEY OBJECTIVE FOR 2009

DEVELOP EMTPDEVELOP EMTP--RV MODELS FOR EXISTING AND FUTURE RV MODELS FOR EXISTING AND FUTURE COMPONENTS IN THE FRENCH NETWORKCOMPONENTS IN THE FRENCH NETWORK

Develop HVDC models : LCC (Thyristor-based) and VSC (IGBT) Generic models for early system studies Detailed models for each HVDC system

Assess the validity range of OHL, cable and transformer models Depending on the study type : steady-state, transient overvoltages…

Develop EMTP models for wind generators (generic and detailed)

Input data in the (existing) models for RTE’s needs How to parametrize the models from available data ? Build and validate librairies for existing equipment in the RTE network

Surge arresters, transformers, CTs and VTs, CB, etc…

9

CONCLUSION AND STUDY EXAMPLES

TodayToday’’s s talkstalks fromfrom RTE RTE willwill furtherfurther illustrateillustrate somesome ofofthethe activitiesactivities of of ourour EMTPEMTP--RV user group :RV user group :

Definition of a protection system for active substations in a radial network Jonathan DUFOUR

Calculation of the flashover rate due to lighting with the EMTP-RV toolbox LIPS Arnaud GUERRIER

Compensation and transient studies on a long EHV overhead line Damien LEBRANCHU

STRONG EMTPSTRONG EMTP--RV ACTIVITY AT RTE, RV ACTIVITY AT RTE, TO MEET NEW CHALLENGES TO MEET NEW CHALLENGES

NEEDS IN TERMS OF MODEL DEVELOPMENT AND NEEDS IN TERMS OF MODEL DEVELOPMENT AND IMPROVEMENTS (HVDC, WIND GENERATORS, CABLESIMPROVEMENTS (HVDC, WIND GENERATORS, CABLES……) )