DEMO 1 DEVELOPMENT OF A DC FACILITY TO SIMULATE OFFSHORE MULTITERMINAL HVDC GRIDS AND THEIR INTERACTION WITH WIND GENERATORS

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1 16 November 2015 DEMO 1 DEVELOPMENT OF A DC FACILITY TO SIMULATE OFFSHORE MULTITERMINAL HVDC GRIDS AND THEIR INTERACTION WITH WIND GENERATORS INNOVATIVE NETWORK TECHNOLOGIES AND THE FUTURE OF EUROPE'S ELECTRICITY GRID BEST PATHS DISSEMINATION WORKSHOP PARIS, 5 NOVEMBER 2015 Roberto Veguillas Iberdrola

2 DEMO DESCRIPTION 2

3 DEMO DESCRIPTION 3

4 DEMO DESCRIPTION HVDC equipment manufacturers provide black boxes? R&D centers We intend to use open models TSOs Utilities & RES developers Detailed models Simulation & validation Independent Manufacturers (WTGs & Power Electronics) 4

5 DEMO 1: OVERVIEW Partners: 5

6 DEMO 1: EXPECTED RESULTS & IMPACT 1. Deeper understanding of electrical interactions between the HVDC link converters and the wind turbine converters in offshore windfarms 2. De-risking of multivendor and multiterminal schemes from the point of view of resonances, power flow and control 3. Public models of HVDC link components that have been validated in a laboratory environment using scaled models (4-terminal DC grid with 50 kw MMC VSC prototypes and a Real Time Digital Simulator system to emulate the AC grid) 4. Extrapolation of the results to a real project (East Anglia Offshore Windfarm) 6

7 DEMO 1: ACTIVITIES WP 3: R&D Task Development of models Task 3.2 Development control algorithms and strategies Task 3.3 Simulation scenarios Task 3.4 Technical assessment of the results D3.1 Models of WTG, HVDC links, offshore grid. Control algorithms, models and strategies. (Tecnalia, M15) D3.2 Results and conclusions from the simulations and studies. (Cardiff, M24) WP 8: Demonstration Task 8.1 Engineering of the scaled equipment Task 8.2 Procurement and construction of test facility Task 8.3 Definition of tests Task 8.4 Demonstration D8.1 Detailed specification of the demonstrator. (SINTEF, M27) D8.2 Specification of tests and documentation of results. (Iberdrola, M39) 7

8 DEMO 1: STATUS MODELS Results Almost all the models needed to build the simulation scenarios are completed: MMC (half-bridge and full-bridge) models Cable models Grid model Wind farm model High level controllers (still in development) Development of a point-to-point and a three-terminal link to carry out a preliminary validation of the models. 8

9 DEMO 1: STATUS DEMONSTRATOR A multiterminal scheme including 3 MMC converters will be developed and integrated into existing laboratory at SINTEF Energy Research in Trondheim Norway: MMC with HB cells, 18 cells per arm MMC with FB cells, 12 cells per arm MMC with HB cells, 6 cells per arm 9

10 Converter Insulation Power cell board DEMO 1: STATUS DEMONSTRATOR Central control level (1 for 3 MMCs) OPAL-RT based Control of circulating currents and grid currents, reference generation for modulation, Grid synchronization etc. Arm control level (6 per MMC) up FPGA SFP SFP SFP SFP Central control Unit (OPAL-RT) FPGA /ARM Arm control board Block control board FPGA Block Control functions as sorting and balancing, signal distribution FPGA Block/Rack control level Measurement and status inputs, gate control signal generation. Arm FPGA /ARM FPGA Power module board Measurement, switching, low level protection (MOSFET based) 10

11 DEMO 1: STATUS DEMONSTRATOR Power board (includes drivers, MOSFETs, voltage measurement,etc) Tested to identify errors/changes Second prototype layout/production Planned production first quarter 2016 Group control boards Prototype in production and expected end November Planned production first quarter 2016 Arm control boards Prototype in production and expected end November Planned production first quarter

12 DEMO 1: NEXT STEPS MODELS Validation of the individual models using simplified links Proceed with the simulation of different topologies Point-to-Point link AC-coupled link DC-coupled link Meshed DC grid DEMONSTRATOR Hardware development Finalize design and testing component boards Full production component boards Integration components into a complete converter Converter testing and qualification Software / control development Development control functions for each component board Development converter control in centralized unit 12

13 THANK YOU! CONTACT Roberto Veguillas Follow us on 13