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Dynamic Modelling Requirements for Users

This document outlines the need to update grid code specifications for dynamic models, aiming to standardize requirements irrespective of technology type, including generators, wind farms, and interconnectors. It proposes improvements in data specifications, confidentiality agreements, and model requirements, emphasizing the need for software compatibility and model functionality. Confidentiality agreements, data specifications, and dynamic model requirements are discussed in detail to ensure user compliance and system reliability.

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Dynamic Modelling Requirements for Users

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  1. Dynamic Modelling Requirements for Users David Cashman Grid Code Review Panel 20th February 2013

  2. Motivation • Current Grid Code specifications for Dynamic models are outdated and unbalanced: • Different standards for Conventional Generators, WFPS, Interconnectors • Increase in range of studies performed and software utilised by TSO: • PSS/e, DIgSILENT PowerFactory, DSA Tools • Variation in technologies included in model: • Conventional: Governors, Exciters, PSS, OEL and UEL protection • WFPS: Full Converter, DFIG, Control Systems • HVDC: LCC, VSC, Control systems

  3. Approach Taken • Standardise requirements of models for all Users of the system irrespective of technology type • Planning Code Appendix updated to cover data and modelling specifications for all users • Define a standard Confidentiality Arrangement between the TSO and the Users • Bring requirements closer to SONIs Wind Farm Setting Schedule

  4. Overview of Documents Modelling Requirements for Users GC Modification • Updated sections PC.A4-6 for data specifications for Generators, WFPS, Interconnectors • Text drafted to be inserted in the Grid Code as PC.A8 to define improved modelling requirements for all Users Dynamic Models Specification for Users • Supplementary document to be placed on TSO website. • Text outlines usability guidelines and software versions. EirGrid Confidentiality Agreement • Confidentiality Agreement the TSO will enter with the User if models are commercially sensitive

  5. Main Updates to Data Specifications • PC.A4: for Generators mostly remains unchanged – one new section on Mechanical data – where appropriate and justified • PC.A5: New section for Controllable WFPS • Based on existing requirements in PC.A4.10 • Parameters of WTGs and Controllable WFPS required including electrical, aerodynamic, control and protection systems required • Harmonic and Short-Circuit Contribution of Controllable WFPS at Connection Point • PC.A6: for Interconnectors some changes to data requirements • PC.A7: for Demand Side Units unchanged • PC.A8: Dynamic Model Requirements for Users

  6. Main Updates to Model Requirements • Users shall provide models for RMS and where required EMT simulation • Software packages required are defined: • Siemens PSS/e, DIgSILENT PowerFactory, DSA Tools TSAT • Source Code of models to be provided • Black box models are unacceptable • Sample cases of model to be provided demonstrating the correct functionality of the model

  7. Confidentiality Agreement • The requirement is on the User to provide a model suitable for representing its plant • The TSO will enter a standardised NDA with Users where models are commercially sensitive • TSO required to share models with other TSOs, DSOs and third parties to perform duties • The TSO will agree to directly interact with the OEM in relation to models provided the OEM enters NDA • Ad-hoc NDAs with OEMs for specific plants will not be accepted

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