DC grid control through the pilot voltage droop concept - Methods for establishing set-point tracking

Berggren, Bertil; Lindén, Kerstin; Majumder, Ritwik

doi:10.1109/energycon.2014.6850631

Cited by 7 publications

(3 citation statements)

References 5 publications

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“…In [20], it is discussed how a common pilot voltage can be used for droop control, as an alternative for only using a local voltage feedback. In [21], this concept has been used to distribute the power taking into account the available headroom at each converter.…”

Section: Pilot Voltage Droop Controlmentioning

confidence: 99%

Development of an open source power flow software for high voltage direct current grids and hybrid AC/DC systems: MATACDC

Beerten

Belmans

2015

IET Generation, Transmission & Distribution

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This paper presents the creation of a new simulation tool, MATACDC. It is the first open source program for power flow analysis of HVDC grids and hybrid AC/DC systems and uses state-of-the-art developments in the field of HVDC grids research. MATACDC is based on MATLAB and has been fully integrated with the AC system power flow routines from MATPOWER. The software includes all the models needed to study the steadystate interaction of AC and DC systems for a wide range of converter representations and control functions.Any combination of multiple non-synchronised AC systems and multiple DC systems can be solved. The code is freely available and is intended for researchers and students working in the field of HVDC grid steady-state interactions and HVDC grid operation. MATACDC can also easily be extended with user-defined functionality.The paper focuses on the program design and layout, the converter modelling, the practical implementation and the integration with AC power flow routines. Furthermore, different examples of possible user-defined functions show how the tool can be extended to include other control representations to study their effect on overall system interactions. Simulation results demonstrate the viability of the routines to simulate complex hybrid AC/DC systems.

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Section: Pilot Voltage Droop Controlmentioning

confidence: 99%

Development of an open source power flow software for high voltage direct current grids and hybrid AC/DC systems: MATACDC

Beerten

Belmans

2015

IET Generation, Transmission & Distribution

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“…The latter minimizes MTDC grid losses while keeping DC voltages within limits after the outage of a VSC. Reference [12] introduces the pilot voltage droop concept, in which a common DC voltage is communicated to all converters for them to share the powers more efficiently. In addition, two methods are used for power setpoint tracking, namely a simple PI controller and a setpoint redispatching by a central entity.…”

Section: Introductionmentioning

confidence: 99%

Coordinated Supervisory Control of Multi-Terminal HVDC Grids: A Model Predictive Control Approach

Papangelis

Debry²,

Panciatici³

et al. 2017

IEEE Trans. Power Syst.

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Abstract-A coordinated supervisory control scheme for future multi-terminal High-Voltage Direct-Current (HVDC) grids is proposed. The purpose is to supervise the grid and take appropriate actions to ensure power balance and prevent or remove voltage or current limit violations. First, using DC current and voltage measurements, the power references of the various Voltage Sources Converters (VSC) are updated according to participation factors. Next, the setpoints of the converters are smoothly adjusted to track those power references, while avoiding or correcting limit violations. The latter function resorts to Model Predictive Control and a sensitivity model of the system. The efficiency of the proposed scheme has been tested through dynamic simulations of a five-terminal HVDC grid interconnecting two asynchronous AC areas and a wind farm.

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“…As an alternative of local measurement, common DC voltage measurement can be used to distribute the same DC voltage mismatch to different converters within the systems so that the contribution to power imbalance will depend only on the droop constant [37], [38]. This type of droop control is referred as pilot voltage droop control.…”

Section: DC Voltage Measurement Locationmentioning

confidence: 99%

A categorization of converter station controllers within multi-terminal DC transmission systems

Irnawan

Silva

Bak

et al. 2016

2016 IEEE/PES Transmission and Distribution Conference and Exposition (T&D)

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Abstract-As more and more VSC-HVDC links are planned and commissioned, interconnection of neighboring links or connection to an existing link becomes a feasible step towards secure and reliable multi-terminal DC (MTDC) transmission systems. Multi-vendor MTDC (MV-MTDC) operation is anticipated as an impact of this gradual DC grids development. In order to achieve certain operation conditions, DC grid controller needs to send specific control settings to individual converter station controls. One of the challenges in MV-MTDC transmission systems occurs in coordination of converters since different types of controller might exist in the same system. It is therefore important to identify the parameters required by the converter station controllers to ensure a smooth coordination. In this paper, different converter station controllers available in the literatures are categorized. Challenges of converter station control coordination are also discussed.

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DC grid control through the pilot voltage droop concept - Methods for establishing set-point tracking

Cited by 7 publications

References 5 publications

Development of an open source power flow software for high voltage direct current grids and hybrid AC/DC systems: MATACDC

Development of an open source power flow software for high voltage direct current grids and hybrid AC/DC systems: MATACDC

Coordinated Supervisory Control of Multi-Terminal HVDC Grids: A Model Predictive Control Approach

A categorization of converter station controllers within multi-terminal DC transmission systems

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