Active power control with undead-band voltage &amp;amp;p frequency droop applied to a meshed DC grid test system

Vrana, Til Kristian; Zeni, Lorenzo; Fosso, Olav Bjarte

doi:10.1109/energycon.2012.6348225

Cited by 17 publications

(15 citation statements)

References 2 publications

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“…The control has been implemented in with DIgSILENT Power Factory simulation software, while the needed lookup tables have been generated with MATLAB. The validity and effectivity of the undeadband control concept has earlier been shown by simulations for a 3-terminal DC grid test system [11], and it has also been validated on the larger CIGRE B4 DC grid test system [12].…”

Section: Resultsmentioning

confidence: 99%

“…Even though the test system design is not completely finished yet, the basic layout and some details have been already decided, so the system could be applied in this study. Some brief information about the system is given in [12]. The grid layout is shown in Figure 6.…”

Section: Simulation Resultsmentioning

confidence: 99%

“…The general undead-band droop control (described in [11] and [12], basic features recalled in subsection 2.1) is in principle designed to find a steady state operation point after a disturbance of the active power balance. In Figure 1 the generic structure of a single HVDC converter control is depicted.…”

Section: Improved Undead-band Droop Controllermentioning

confidence: 99%

See 2 more Smart Citations

Dynamic active power control with improved undead-band droop for HVDC grids

Vrana

Zeni²,

Fosso

2012

10th IET International Conference on AC and DC Power Transmission (ACDC 2012)

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The earlier developed control method using a piecewise linear droop curve, with different droop values for the different segments, has now been optimised for dynamic performance. Non-linearities at the junctions of two linear droop sections have been adressed. Also non-linearity of power based DC voltage control has been adressed. Dynamic instability due to high control gains has been treated and a new improved control structure has been proposed. The concepts have been validated with RMS simulation with the DIgSILENT PowerFactory software on the CIGRE B4 DC grid test system.

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Section: Resultsmentioning

confidence: 99%

Section: Simulation Resultsmentioning

confidence: 99%

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Dynamic active power control with improved undead-band droop for HVDC grids

Vrana

Zeni²,

Fosso

2012

10th IET International Conference on AC and DC Power Transmission (ACDC 2012)

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“…in [3], [4]. A variant of the droop scheme was proposed in [5], where different droop values are used depending on the severity of the disturbance.…”

Section: Introductionmentioning

confidence: 99%

Local control of AC/DC converters for frequency support between asynchronous AC areas

Papangelis

Debry²,

Cutsem

2017

2017 IEEE Manchester PowerTech

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Abstract-This paper proposes a novel control scheme for frequency support among asynchronous AC areas through HVDC grids. It is based on local controllers, each acting on a voltage source converter, using locally available measurements only, and supporting frequency of the adjacent AC area after a significant disturbance. The controller is combined with the existing DC voltage droop technique and is inspired of Model Predictive Control, taking into account various constraints. The coordination of the proposed control scheme with the existing secondary frequency control of an AC area is also discussed. Examples obtained from a test system with a five-terminal DC network connecting two asynchronous areas demonstrate the effectiveness of the proposed control scheme.

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“…A similar implementation is proposed in [8] where the frequency support by the onshore converters is activated replacing the DC voltage droop control when a "disturbed" condition is identified. The so-called "undead-band" (or piecewise) droop scheme proposed in [9] is a variant of the frequency droop control in which the droop varies according to the severity of the under-frequency event.…”

Section: Introductionmentioning

confidence: 99%

Frequency support among asynchronous AC systems through VSCs emulating power plants

Papangelis¹,

Guillaud

Cutsem

2015

11th IET International Conference on AC and DC Power Transmission

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This paper proposes a new control scheme for the Voltage Source Converters (VSCs) of a High Voltage Direct Current (HVDC) grid connecting asynchronous AC systems, so that the latter can mutually support their frequencies after a disturbance. The scheme involves no communication between VSCs. It is activated upon detection of a significant frequency deviation, with the possibility to limit the support requested from other AC systems. It relies on an integral control enforcing the frequency droop characteristics (of classical speed governors), in addition to the voltage-droop control of VSCs. The controller is tuned to emulate the response of a power plant, while avoiding excessive transients in the HVDC system, and limiting the impact on the other AC systems.

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Active power control with undead-band voltage &p frequency droop applied to a meshed DC grid test system

Cited by 17 publications

References 2 publications

Dynamic active power control with improved undead-band droop for HVDC grids

Dynamic active power control with improved undead-band droop for HVDC grids

Local control of AC/DC converters for frequency support between asynchronous AC areas

Frequency support among asynchronous AC systems through VSCs emulating power plants

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