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1
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])
2
Agenda
• Why a EU Network Code ?
• Update of the Belgian Grid Code
• Requirements for Generators
• Compliance process
• Compliance tests
3
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
• Why a EU Network Code ?
• Update of the Belgian Grid Code
• Requirements for Generators
• Compliance process
• Compliance tests
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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
• Why a EU Network Code ?
• Update of the Belgian Grid Code
• Requirements for Generators
• Compliance process
• Compliance tests
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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.
regionalspecific requirements
…Subsection
Power Park Modules
system-widerequirements
with specifics fortidal & wave, wind, etc.
regionalspecific requirements
…Subsection
Offshore
Structure of the requirements for generators
9
Agenda
• Why a EU Network Code ?
• Update of the Belgian Grid Code
• Requirements for GeneratorsGeneral requirements for all generatorsRequirements for synchronous generatorsRequirements for power park modules
• Compliance process
• Compliance tests
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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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General requirements
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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General requirements
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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General requirements
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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General requirements
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
• Why a EU Network Code ?
• Update of the Belgian Grid Code
• Requirements for GeneratorsGeneral requirements for all generatorsRequirements for synchronous generatorsRequirements for power park modules
• Compliance process
• Compliance tests
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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
• Why a EU Network Code ?
• Update of the Belgian Grid Code
• Requirements for GeneratorsGeneral requirements for all generatorsRequirements for synchronous generatorsRequirements for power park modules
• Compliance process
• Compliance tests
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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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Requirements for power park modules
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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Requirements for power park modules
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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Requirements for power park modules
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
• Why a EU Network Code ?
• Update of the Belgian Grid Code
• Requirements for Generators
• Compliance process
• Compliance tests
24
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
• Why a EU Network Code ?
• Update of the Belgian Grid Code
• Requirements for Generators
• Compliance process
• Compliance tests
27
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?