Analysis of Active Power Control for VSC&amp;#x2013;HVDC

Wang, Wenyuan; Beddard, Antony; Barnes, Mike; Marjanović, Ognjen

doi:10.1109/tpwrd.2014.2322498

Cited by 115 publications

(72 citation statements)

References 17 publications

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“…The main target of dc voltage control is to cope with the transient power imbalance in the dc grid and maintain the voltages of all terminals within an acceptable level range. Droop control, which enables a distributed control and a relatively high reliability, has been suggested as the most feasible dc voltage control strategy for MTDC [6][7][8]10]. As such, droop control will be used as the benchmark control in this paper for the study of the impact of the dc reactor on MTDC dynamics.…”

Section: Introductionmentioning

confidence: 99%

Impact of DC Breaker Systems on Multiterminal VSC-HVDC Stability

Wang

Barnes

Marjanović

et al. 2016

IEEE Trans. Power Delivery

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148

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The use of VSC-HVDC grids for offshore wind farm integration will require the use of dc breaker systems and they, at present, will require dc reactors to limit the rate of rise of fault current. The introduction of large dc reactors throughout a VSC-HVDC system can have significant impact on its stable operation and will require additional control. This paper analyses this problem and proposes a PSS-like control (DCPSS) to aid dc grid stability and cope with this effect. A generalized analytical model for studies on dc voltage control is presented. Key stability and transient performance issues caused by the use of the dc reactors in a multi-terminal system, are investigated by analyzing poles, zeros and frequency responses of both open-loop and closed-loop models. Design and location identification methods for the DCPSS are provided. Excellent damping enhancement is achieved by this controller. The analytical studies and time-domain simulations in this paper are performed based on two VSC-HVDC models. T Disconnector Auxiliary DC Breaker Hybrid DC Breaker Main DC Breaker Current Limiting Reactor Residual DC Current Breaker Fig. 1. ABB Proactive VSC-HVDC Circuit Breaker [1].0885-8977 (c)

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Section: Introductionmentioning

confidence: 99%

Impact of DC Breaker Systems on Multiterminal VSC-HVDC Stability

Wang

Barnes

Marjanović

et al. 2016

IEEE Trans. Power Delivery

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148

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“…The MMC station is set to control the active and reactive power flow. Figure 3 shows the control structure for such a MMC system, modified from [26]. …”

Section: Modellingmentioning

confidence: 99%

Impact of Fault Current Limiter on VSC-HVDC DC Protection

Chang¹,

Cwikowski²,

Pei³

et al. 2016

12th IET International Conference on AC and DC Power Transmission (ACDC 2016)

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Multi-terminal Voltage-Sourced Converter (VSC) High Voltage Direct Current (HVDC) transmission is expected to play a key role in future power transmission grids. Compared with AC transmission, DC transmission is more vulnerable to faults due to the lower DC side impedances and sensitive power electronics used in the converters. DC protection issues must be solved before any multi-terminal VSC-HVDC grid can be established. In terms of DC protection, apart from using a DC circuit breaker to interrupt and isolate a DC fault, a Fault Current Limiter (FCL) may be employed to limit the fault current. FCLs could potentially form an important part of any future DC protection system. This paper investigates such a FCL. The main contribution of this paper is that, the resistive type superconducting FCL (SCFCL) is modelled in detail to perform DC protection with the ABB hybrid circuit breaker, in a high fidelity four-terminal VSC-HVDC system model. The simulation results show that the SCFCL has great potential to be employed for DC protection.

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“…3, where a power change DP s is added to the power setpoint P s;0 . As the analysis in [30] shows, an implementation using a PI power controller is preferred over a feedforward power loop in order to avoid high-gain instability problems. The output of the PI power controller can be directly connected to the inner current reference signal or can be the input signal of a cascaded structure with an internal dc-side voltage PI controller, as developed in [31].…”

Section: Dynamic Implementation Of Droop Controlmentioning

confidence: 99%

A comprehensive modeling framework for dynamic and steady-state analysis of voltage droop control strategies in HVDC grids

Beerten

Belmans

2015

International Journal of Electrical Power & Energy Systems

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a b s t r a c tThis paper presents a comprehensive modeling framework to analyze and compare the performance of different voltage droop control characteristics in an HVDC grid. All models are fully derived mathematically, both for dynamic simulations and for steady-state power flow analysis. The main contribution lies in the development of a common modeling and control approach for the different droop-based control schemes that have been presented in the literature. The discussion includes power-and current-based droop control, either in their standard form or combined with a deadband, a constant voltage control or consisting of different slopes. Dynamic simulations show that, when applying a comparable underlying dynamic converter control framework, similar dynamic responses can be expected from the different droop control schemes, while the steady-state voltage deviations and power sharing after a contingency are different. A comparison with results from a full-detailed power flow implementation shows that these voltage deviations and power sharing can accurately be predicted by the derived steady-state power flow models, thereby avoiding the need for time-consuming dynamic simulations.

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Analysis of Active Power Control for VSC–HVDC

Cited by 115 publications

References 17 publications

Impact of DC Breaker Systems on Multiterminal VSC-HVDC Stability

Impact of DC Breaker Systems on Multiterminal VSC-HVDC Stability

Impact of Fault Current Limiter on VSC-HVDC DC Protection

A comprehensive modeling framework for dynamic and steady-state analysis of voltage droop control strategies in HVDC grids

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