Distributed control of Multi-terminal HVDC grids swegrids-logo

SweGRIDS research area INSTINCT
SweGRIDS project code IT6
Project type PhD
Status completed
Researcher Davood Babazadeh   (webpage)
University KTH (EPE)
Project period 2014-10-01 to 2017-03   
Project supervisor Lars Nordström   (webpage)
Industrial sponsors Svenska kraftnät, ABB


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Project abstract

Recent issues such as priority access of renewable resources recommended by European energy directives and increase the electricity trading among countries lead to new requirements on the operation and expansion of transmission grids. Since AC grid expansions are limited by legislative issues and long distance transmission capacity, there is a considerable attention drawn to application of HVDC transmission grids on top of, or in complement to, existing AC power systems. The secure operation of HVDC grids requires a hierarchical control system. In HVDC grids, the primary control action to deal with power or DC voltage deviations is communication-free and local. In addition to primary control, the higher supervisory control actions are needed to guarantee the optimal operation of HVDC grids. However, the implementation of supervisory control functions is linked to the arrangement of system operators; i.e. an individual HVDC operator (central structure) or sharing tasks among AC system operators (distributed structure).

The thesis that is now completed from the project presents distributed control of an HVDC grid. To this end, three possible supervisory functions are investigated; coordination of power injection set-points, DC slack bus selection and network topology identification. In this thesis, all three functions are first studied for the central structure. For the distributed solution, two algorithms based on Alternating Direction Method of Multipliers (ADMM) and Auxiliary Problem Principle (APP) are adopted to solve the coordination of power injection. For distributed selection of DC slack bus, the choice of parameters for quantitative ranking of converters is important. These parameters should be calculated based on local measurements if distributed decision is desired. To this end, the short circuit capacity of connected AC grid and power margin of converters are considered. To estimate the short circuit capacity as one of the required selection parameters, the result shows that the recursive least square algorithm can be very efficiently used. Besides, it is possible to intelligently use a naturally occurring droop response in HVDC grids as a local measurement for this estimation algorithm. Regarding the network topology, a two-stage distributed algorithm is introduced to use the abstract information about the neighbouring substation topology to determine the grid connectivity.


Summary of work

2015. A simulation platform including several components relevant to Hybrid AC DC grid simulation have been developed. A number of papers on distributed control strategies for HVDC grids have been published. A series of Master thesis projects involving ABB have been performed.

2016. Distributed algorithms have been developed to implement three control functions of: Coordination of power injection; DC slack bus selection; Network topology processor.


Event log

2016. Attended PSCC conference in Italy June 2016.

2016. 2 month research visit at OFFIS in Oldenburg (Germany) Feb-March 2016

2017. Thesis was successfully defended in April 2017. Title: ”Distributed Control of HVDC Transmission Grids”

2017. Attended 12th IEEE PES PowerTech Conference in June 18-22 2017, Manchester, UK


Project reference-group

Lars-Ola Österlund,  ABB
Lennart Harnefors,  ABB
Pinaki Mitra,  ABB
Magnus Johansson,  Svenska kraftnät


Publications by this researcher

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Distributed Control of HVDC Transmission Grids
Davood Babazadeh.
2017,   Thesis (PhD), KTH Royal Institute of Technology, TRITA-EE 2017:018

Strategies to improve the voltage quality in active low-voltage distribution networks using DSO's assets
Mikel Armendariz,   Davood Babazadeh,   Daniel Brodén,   Lars Nordström.
2017,   IET Generation, Transmission & Distribution, vol. 11(1)

Distributed Two-stage Network Topology Processor for HVDC Grid Operation
Davood Babazadeh,   Fabian Hohn,   Yiming Wu,   Lars Nordström.
2017,   12th IEEE PES PowerTech Conference, Towards and Beyond Sustainable Energy Systems, juni 18-22, Manchester, UK

Distributed Two-stage Network Topology Processor for HVDC Grid Operation
Davood Babazadeh,   Fabian Hohn,   Yimin Wu,   Lars Nordström.
2017,   2017 IEEE Power & Energy Society General Meeting, JUL 16-20, 2017, Chicago, IL

Centralized Versus Distributed State Estimation for Hybrid AC/HVDC Grid
Pontus Grahn,   Viktor Briggner,   Linus Johansson,   Davood Babazadeh,   Lars Nordström.
2017,   IEEE International Conference on Innovative Smart Grid Technologies, (ISGT Europe 2017), 26 Sep - 29 Sep 2017, Torino, Italy

Distributed Secondary Frequency Control Considering Rapid Start Units Using Alternating Direction Method of Multipliers
Muhammad Talal Khan,   Md Zakaria Habib,   Elin Karlsson,   Davood Babazadeh,   Lars Nordström.
2016,   Workshop on Modeling and Simulation of Cyber-Physical Energy Systems, MSCPES 2016, Hofburg PalaceJosefsplatz 3Vienna, Austria, 11 April 2016 through

Short Circuit Capacity Estimation for HVDC Control Application
Davood Babazadeh,   Arvind Muthukrishnan,   Lars Nordström,   Pinaki Mitra,   Tomas Larsson.
2016,   Power Systems Computation Conference, 2016, 20-24 June 2016

Two-stage Network Processor for an Independent HVDC Grid Supervisory Control
Davood Babazadeh,   Alessio Tonti,   Mikel Armendariz,   Alberto Borghetti,   Lars Nordström,   Carlo Alberto Nucci.
2016,   IEEE PES GM 2016

Selection of DC Voltage Controlling Station in an HVDC Grid
Davood Babazadeh,   Arvind Muthukrishnan,   Pinaki Mitra,   Tomas Larsson,   Lars Nordström.
2016,   Electric power systems research, vol. 144

Study of Centralized and Distributed Coordination of Power Injection in Multi-TSO HVDC Grid with Large Off-shore Wind Integration
Davood Babazadeh,   Dirk Van Hertem,   Lars Nordström.
2016,   Electric power systems research, vol. 136

Modeling of Communication Infrastructure Compatible to Nordic 32 Power System
Wu Yiming,   Davood Babazadeh,   Lars Nordström.
2016,   IEEE PES GM 2016

A Method to Place Meters in Active Low Voltage Distribution Networks using BPSO Algorithm
Mikel Armendariz,   Davood Babazadeh,   Lars Nordström,   Michele Barchiesi.
2016,   19th Power Systems Computational Conference, PSCC, June 2016 in Genova, Italy

Real-Time Estimation of AC-Grid Short Circuit Capacity for HVDC Control Application
Davood Babazadeh,   Arvind Muthukrishnan,   Pinaki Mitra,   Tomas Larsson,   Lars Nordström.
2016,   IET Generation, Transmission & Distribution

Coordination of Power Injection in HVDC Grids with Multi-TSOs and Large Wind Penetration
Davood Babazadeh,   Dirk Van Hertem,   Michael Rabbat,   Lars Nordström.
2015,   The 11th International Conference on AC and DC Power Transmission - UK

Requirements on Communication and Control Systems for HVDC Grids
Lars Nordström,   Davood Babazadeh.
2015,   IEEE PES Conference on Innovative Smart Grid Technologies (ISGT)

Distributed Ancillary Service Support for Independent AC-Areas through HVDC Grid
Davood Babazadeh,   Freizadeh Farhad,   Lars Nordström.
2015,   IEEE PowerTech EINDHOVEN 2015, Eindhoven, NETHERLANDS, JUN 29-JUL 02, 2015

Real-time Implementation of Optimal Power Flow Calculator for HVDC Grids
Muhammad Hassan Fidai,   Davood Babazadeh,   Jonathan Hanning,   Tomas Larsson,   Lars Nordström.
2015,   2015 Cigre Symposium in Lund Sweden

Supervisory Control for VSC-HVDC Grid Interconnecting AC Systems
Muhammad Hassan Fidai,   Davood Babazadeh,   Arvind Muthukrishnan,   Lars Nordström.
2015,   IEEE PES General Meeting 2015, in Denver

Cyber physical Approach to HVDC grid control
Lars Nordström,   Davood Babazadeh.
2015,   Cyber Physical Systems Approach to Smart Electric Power Grid

Multi-Stage Network Processor for an Independent and Integrated HVDC grid Supervisory Control Architecture
Davood Babazadeh,   Lars Nordström.
2015,   The 13th International Workshop on Electric Power Control Centers, Bled, Slovenia

Agent-based Control of VSC-HVDC Transmission Grid : A Cyber Physical System Perspective
Davood Babazadeh,   Lars Nordström.
2014,   Workshop on Modeling and Simulation of Cyber-Physical Energy Systems - MSCPES 2014

Stateful Data Delivery Service for Wide Area Monitoring and Control Applications
Yiming Wu,   Davood Babazadeh,   Lars Nordström.
2014,   44th Annual IEEE/IFIP International Conference on Dependable Systems and Networks, DSN 2014

Implementation of agent-based power flow coordination in AC/DC grids using co-simulation platform
Davood Babazadeh,   Mohammad Nazari,   Muhammad Hassan Fidai,   Moustafa Chenine,   Mehrdad Ghandhari,   Lars Nordström.
2014,   2014 IEEE International Conference on Smart Grid Communications, SmartGridComm 2014

Consensus Control for Induction Motors Speed Regulation
Harold R. Chamorro,   Mohammad Nazari,   Davood Babazadeh,   Naveed ur Rehman Malik,   Mehrdad Ghandhari.
2014,   16th European Conference on Power Electronics and Applications (EPE-ECCE Europe), AUG 26-28, 2014, Lappeenranta, FINLAND

Survey on the Factors Required in Design of Communication Architecture for Future DC grids
Davood Babazadeh,   Moustafa Chenine,   Lars Nordström.
2013,   2nd IFAC Workshop on Convergence of Information Technologies and Control Methods with Power Systems, ICPS 2013

Test platform for synchrophasor based wide-area monitoring and control applications
Kun Zhu,   Samarth Deo,   Ahmad Al-Hammouri,   Nicholas Honeth,   Moustafa Chenine,   Davood Babazadeh,   Nordström Lars.
2013,   2013 IEEE Power and Energy Society General Meeting, PES 2013

A Platform for Wide Area Monitoring and Control System ICT Analysis and Development
Davood Babazadeh,   Moustafa Chenine,   Kun Zhu,   Lars Nordström,   Ahmad Al-Hammouri.
2013,   2013 IEEE Grenoble Conference PowerTech, POWERTECH 2013

SITL and HLA Co-simulation Platforms : Tools for Analysis of the Integrated ICT and Electric Power System
Riccardo Bottura,   Davood Babazadeh,   Kun Zhu,   Alberto Borghetti,   Lars Nordström,   Carlo Alberto Nucci.
2013,   IEEE Region 8 Conference EuroCon 2013

Modeling of Wide Area Monitoring System as a Cyber Physical System
Davood Babazadeh.

Real-Time Smart Grid Application Testing using OPNET SITL
Davood Babazadeh,   Moustafa Chenine,   Kun Zhu,   Lars Nordström.
2012,   OPNETWORK2012

Design of Robust Wide-Area Damping Controller Based on Synchronized Phasor
Kun Zhu,   Davood Babazadeh,   Yiming Wu,   Lars Nordström.
2012,   The 9th International Conference on Advances in Power System Control, Operation & Management (APSCOM 2012), 18 November-21 November 2012, Hong Kong

Mitigating Ferroresonance in Coupling Capacitor Voltage Transformers With Ferroresonance Suppressing Circuits
Saeed Shahabi,   Davood Babazadeh,   RE Shirvani,   M Purrezagholi.
2009,   EUROCON 2009: INTERNATIONAL IEEE CONFERENCE DEVOTED TO THE 150 ANNIVERSARY OF ALEXANDER S. POPOV

Publication list last updated from DiVA on 2021-09-18 22:01.


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