Elia User's Group Belgian Grid 2010 ENTSO-e Pilot Network Code

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Elia User’s Group Belgian Grid 2010ENTSO-e Pilot Network Code

“Requirements for Grid ConnectionApplicable to all Generators”

Status & impact on the Belgian Technical Regulations

22/10/2010Jacques Warichet ([email protected])

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Agenda

• Why a EU Network Code ?

• Update of the Belgian Grid Code

• Requirements for Generators

• Compliance process

• Compliance tests

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Pilot Network Code: requirements for generators

• Quoi ?Règlement Européen (au-dessus des lois nationales)Critères techniques de raccordement des unités de productionUnités synchrones classiques raccordées directement au réseauTout autre type d’unité onshore (power park module)

• Pourquoi ?Producteurs & constructeurs

• Volonté de comprendre les exigences chez les différents TSOs• Souhait prioritaire: harmonisation des définitions et de la structure• Souhait secondaire: harmonisation des paramètres• Pression principale = European Wind Energy Association (EWEA)• Consultation des associations de constructeurs & producteurs, y compris PV

TSO• Volonté de fixer des règles communes sur les aspects concernant tout le

réseau synchrone• Croissance de l’énergie distribuée: nécessité d’impliquer davantage les DSOs

pour maîtriser la sécurité

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Objectif de la présentation

• Au profit des clients d’Elia (Users’ Group Belgian Grid)Préparation au second workshop public (5 novembre 2010)Sensibiliser à l’impact possible sur le Règlement technique

• Objectif pour EliaPréparer la mise à jour du Règlement techniqueImpliquer les clients dans le processus de concertation

- pour le Network Code ENTSO-e,- et pour le futur Règlement technique belge

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Agenda






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Impact sur le Règlement technique

• Bottom-up : besoins d’Elia et des clientsManque de règles techniques spécifiques pour les énergies

renouvelablesCertains paramètres du RT actuel sont inadéquats pour la

situation future prévue

• Top-down : Network code ENTSO-eHarmonisation de la structureHarmonisation des définitionsHarmonisation des paramètres endéans certaines limites

• Nécessité de mettre à jour le Règlement technique fédéralet les RT régionaux ainsi que les prescriptions Synergriden 2011

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Agenda






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General requirements for all types of generation units

Network Code on Grid Connection of Generation Facilities

system-widerequirements

with specifics forcoal, gas, hydro, nuclear, etc.

regionalspecific requirements

…SubsectionSynchronousC

over

age

of P

ilot C

ode

Pro

ject system-wide

requirements

with specifics forsolar, wind, etc.


…Subsection

Power Park Modules

system-widerequirements

with specifics fortidal & wave, wind, etc.


…Subsection

Offshore

Structure of the requirements for generators

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Agenda



• Requirements for GeneratorsGeneral requirements for all generatorsRequirements for synchronous generatorsRequirements for power park modules



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General requirements

1. Voltage and frequency ranges (R5.1)Temporary ranges definedLarger ranges than today for V > 60 kV quid lower levels?

0,90,850,8

1,11,0875

1,05

46,547,5

48

51,5 53

3h

1h

30min

10s10s

10min

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2. Rate Of Change Of Frequency (R5.2)Required: Ability to withstand 2 Hz/sToday in BE, criterion ROCOF > 0,6 Hz/s used to avoid undesired

islanding for DG what is the best trade-off?Compromise stability vs. Equipment protection / people security

3. Inertia (R5.6)Ability to require units, which do not provide this inherently, to

provide a synthetic inertiaP change in proportion to df/dtNot critical in Continental Europe and in the long term?

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4. Frequency sensitive mode (R5.7 & R5.8)Parameters to be specified by the TSOApplicable to all technologies? How to discriminate?

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5. Short-circuit contribution (R5.12)Ability to provide Isc contribution through

continuous V-control (with or without deadband)Goal: strenghten the net and facilitate protections selectivityTime frame and extent of contribution?Negative sequence contribution? Not all technologies can (today)

6. Houseload tripping & operation (R5.16 & R5.17)Ability to trip to houseload if startup time > 30 minAutomatic mode able to maintain stability > 3 minPosition of CB at PCC not sufficient to identify houseload op.Not compatible with DG « anti-islanding protections » in BE

voltage levels of application?

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7. Paralleling & tortional oscillations (R5.23)Steps up to 50 % Pnom are considered normal routineTaken into account for shaft dimensioningToday in BE, no applied at 380 kV (nuclear units cannot)

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Agenda






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Requirements for synchronous generators1. U-Q range (R6.1 & R6.2)

Size of the red box = max size required by TSOP = Pmax: ability to cover the red boxP < Pmax: normal shape of PQ-curves (more than P = Pmax)At HV-side of last

step-up transformer

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Requirements for synchronous generators

V >= 110 kV

V < 110 kV

2. FRT (R6.3, R6.4 & R6.5)2 profiles:

below/above 110 kVat PCCphase with largest drop85 % P recovery

in t < 10 s

– Fast valving prohibited forV < 110 kV

– Less margin forprotection clearing failure

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Agenda






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Requirements for power park modules

1. U-Q range (R7.1 & R7.2)P = Pmax: same range as synchronous generatorsP < Pmax: bigger abilityAt HV-side of last step-up transformer

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V >= 110 kV

V < 110 kV

2. FRT (R7.3 & R7.4)2 profiles:

below/above 110 kVat PCCphase with largest drop

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3. Q-control modes (R7.5)Three possible automatic modesV-control, Q-control, pf-control

4. Fast acting V-control (R7.6)T < 40 msI/Inom > 2 Udev/Unom

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5. Synthetic inertial capability (R7.10)Above a specified size x MW ? What is realistic?t < 200 msdeadband < 10 mHz/s

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Agenda






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Compliance process

• Requirements applicable to all unit, new and existing!V >= 110 kV: full requirementsV < 110 kV & P < P* (MW): as many as possible not clearThreshold P* (MW) to be specified locally fair threshold?Provision of data, studies & modelsCompliance tests

• New unitsSelf-compliance study before connectionValidation by the TSO

• Existing unitsself-compliance study t < transitory period (?) after publicationCost analysis of modifications for complianceTSO analyses the cost-benefit of those modifications

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Compliance process

• Energization Operational Notification (EON)Connection facilities (protection & control interfaces) readyResponsibilities & procedures agreedAllows to energize the internal networksNo synchronization to the grid

• Interim Operational Notification (ION)Data & study completedBefore compliance tests (procedures are ready)Allows the synchronization to the gridMaximum 24 months

• Final Operational Notification (FON)Compliance testing successfullFinal compliance statementIf compliance not full, derogation can be asked

• Limited Operational Notification (LON)Unit previously in FONNot compliant due to replacement / maintenance / equipment failureIf issue longer than 3 months, LON has to be requestedMaximum 12 months

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Agenda






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Compliance tests

• To be executed to reach the FON

• For existing units, can be requested by TSOat any time (esp. if changes are brought to the unit),even regularly

• ResponsibilityPower generating facility opeartor: carry out tests, safetyNetwork Operator: right to witness on site or remotelyList of tests for synchronous generators: R9.15 - R9.26List of tests for PPM: under development

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Conclusion for Elia users

• New set of requirements at EU levelEquitable, not equal, for the various technologiesSometimes more constraining, sometimes less

• Some parameters still under local responsibilityBelgian Grid Code needs a reviewParameters will have to be set transparently

• Systematic processNew: compliance testsCompliance process step-by-stepAcceptance of derogations who? How to guarantee it is fair?

Elia User's Group Belgian Grid 2010 ENTSO-e Pilot Network Code

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