Autonomous converter control in a multi-terminal HVDC system

Barker, Carl; Whitehouse, Robert S.

doi:10.1049/cp.2010.0988

Cited by 59 publications

(49 citation statements)

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“…The droop slope can be specified considering the steady-state voltage range of the dc grid and the power processing constraint that is applied to each VSC [10].…”

Section: P-v DC Droop Controlmentioning

confidence: 99%

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Unified reference controller for flexible primary control and inertia sharing in multi‐terminal voltage source converter‐HVDC grids

Rouzbehi

Zhang

Candela

et al. 2017

IET Generation, Transmission & Distribution

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Multi-terminal dc (MTDC) grids are expected to be built and experience rapid expansion in the near future as they have emerged as a competitive solution for transmitting offshore wind generation and overlaying their ac counterpart. The concept of inertia sharing for the control and operation of MTDC grids, which can be achieved by the proposed unified reference controller. The control objectives of the MTDC grids voltage source converter (VSC) stations are no longer limited to the stabilisation of MTDC grid, instead, the requirements of ac side are also met. The interaction dynamics between the ac and dc grid is analysed to illustrate the proposed concept. In addition, the voltage source converter stations can work in different operation modes based on the proposed unified control structure, and can switch among the operation modes smoothly following the secondary control commands. Simulation results exhibit the merits and satisfactory performance of the proposed control strategy for stable MTDC grid operation.

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“…The droop slope can be specified considering the steady-state voltage range of the dc grid and the power processing constraint that is applied to each VSC [10].…”

Section: P-v DC Droop Controlmentioning

confidence: 99%

“…For example, the stations interfacing with wind farms normally perform power and frequency control for harvesting the maximum energy, and the station that is connected to a stiff bus of the ac grid can perform voltage control [10]. The transition among different control modes will facilitate a more flexible operation of MTDC grids.…”

Section: Introductionmentioning

confidence: 99%

Unified reference controller for flexible primary control and inertia sharing in multi‐terminal voltage source converter‐HVDC grids

Rouzbehi

Zhang

Candela

et al. 2017

IET Generation, Transmission & Distribution

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“…The droop controller used for this work is referred to as the Autonomous Converter Control (ACC) which was originally proposed by Alstom Grid [1]. The basic implementation of the ACC and the generic VSC control system which is used for this work is shown in Figure 4 and Figure 5.…”

Section: B Vsc Controlsmentioning

confidence: 99%

“…It should be noted that the LRSP is the same as the target DC voltage. The term LRSP is used in this paper as it is in keeping with the original literature on the ACC [1]. At steady-state, I dc will be equal to I dc * providing that the PFS is accurate, and hence the voltage order sent to the DC voltage controller, V dco *, is equal to the LRSP.…”

Section: B Vsc Controlsmentioning

confidence: 99%

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HVDC grid control system based on autonomous converter control

Barnes¹,

Beddard²,

Barker³

et al. 2016

8th IET International Conference on Power Electronics, Machines and Drives (PEMD 2016)

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In this paper, the main layers of a HVDC control architecture based on autonomous converter control have been implemented and a range of tests have been conducted to assess the system's steady-state and transient performance.The simulation results show that the control system is able to accurately control DC power flow in steady-state and to maintain grid stability for fast transient events without exceeding the dynamic operating limits.

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