Validation of a two-time step HVDC transient stability simulation model including detailed HVDC controls and DC line L/R dynamics

Brandt, Rachel; Annakkage, U.D.; Brandt, D.P.; Kshatriya, N.

doi:10.1109/pes.2006.1708868

Cited by 16 publications

(5 citation statements)

References 4 publications

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“…For generalized multiterminal VSC HVDC schemes the common time step-size of around half a cycle cannot be maintained due to the inclusion of the DC-side transients [49]. A solution to this issue is the application of multi-rate techniques, in which the dynamic model of interest contains an inner integration loop that simulates the VSC HVDC system at a much smaller time step-size, Δt 2 [50]. This approach is shown in Fig.…”

Section: Dynamic Simulation Of Mixed Ac/vsc Hvdc Systemsmentioning

confidence: 99%

Modeling and control of HVDC grids: A key challenge for the future power system

Beerten

Gomis‐Bellmunt

Guillaud

et al. 2014

2014 Power Systems Computation Conference

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HVDC technology is developing fast and HVDC grids are increasingly seen as a possible and feasible solution to manage the future power system with large amounts of renewables in a secure and cost-effective manner. However, systems with significant amounts of DC transmission behave in a fundamentally different manner when compared to the traditional AC power system. The integration of HVDC systems introduces new fast dynamics on different time frames and adds controllability to the combined system. As a result, the modeling and control of the entire interconnected system needs to be reevaluated in order to accurately compute the system behavior, both from the AC and DC system. This survey paper gives an overview of the current research in the field of HVDC grids focusing on the interaction of the AC and DC system. The converters and their behavior are discussed in greater detail. A second component which is discussed is the DC breaker. Both devices operate fundamentally different than their AC counterparts. The fast interaction between AC and DC systems requires changes in the manner in which the modeling and computation of the system is done, both at the DC and the AC side. Although these considerations are needed within all relevant time frames, two relevant cases are specifically addressed in this paper: the connection of offshore wind power through a HVDC system and the optimal operation of the power system with a strong presence of HVDC.

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Section: Dynamic Simulation Of Mixed Ac/vsc Hvdc Systemsmentioning

confidence: 99%

Modeling and control of HVDC grids: A key challenge for the future power system

Beerten

Gomis‐Bellmunt

Guillaud

et al. 2014

2014 Power Systems Computation Conference

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show abstract

“…If there is a fast dynamic for a long time during the simulation process, even if it is only caused by the local system, it will greatly limit the integral step of the whole system, which will reduce the computational efficiency of the simulation. Moreover, multi‐rate simulation is an effective way to solve the problem [8–15], the basic idea is using different indicators to decompose the system into multiple subsystems based on the dynamic response constant and each subsystem can use different steps to calculate according to their own characteristics. The long‐step method will greatly affect the accuracy of the simulation and the interface between the short step and the long step.…”

Section: Introductionmentioning

confidence: 99%

Multi‐rate electromagnetic transient simulation of large‐scale power system based on multi‐core

Zhan

Yao

Zhang

et al. 2017

J. eng.

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“…Classical QSS model for the DC transmission and its controlling system has the advantage of fast computation; thus it has been widely used in hybrid AC/DC system simulation [28]. Although several techniques have been presented to improve the accuracy, such as adopting different step lengths during simulation [29], classical QSS model would still give wrong results under asymmetric faulted condition. To deal with the DC system modeling problem for transient stability simulation, a modified quasi-steady state (MQSS) model for DC system is established in this study.…”

Section: Introductionmentioning

confidence: 99%

Modified Quasi-Steady State Model of DC System for Transient Stability Simulation under Asymmetric Faults

Liu

Wei

Fang

et al. 2015

Mathematical Problems in Engineering

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As using the classical quasi-steady state (QSS) model could not be able to accurately simulate the dynamic characteristics of DC transmission and its controlling systems in electromechanical transient stability simulation, when asymmetric fault occurs in AC system, a modified quasi-steady state model (MQSS) is proposed. The model firstly analyzes the calculation error induced by classical QSS model under asymmetric commutation voltage, which is mainly caused by the commutation voltage zero offset thus making inaccurate calculation of the average DC voltage and the inverter extinction advance angle. The new MQSS model calculates the average DC voltage according to the actual half-cycle voltage waveform on the DC terminal after fault occurrence, and the extinction advance angle is also derived accordingly, so as to avoid the negative effect of the asymmetric commutation voltage. Simulation experiments show that the new MQSS model proposed in this paper has higher simulation precision than the classical QSS model when asymmetric fault occurs in the AC system, by comparing both of them with the results of detailed electromagnetic transient (EMT) model of the DC transmission and its controlling system.

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Validation of a two-time step HVDC transient stability simulation model including detailed HVDC controls and DC line L/R dynamics

Cited by 16 publications

References 4 publications

Modeling and control of HVDC grids: A key challenge for the future power system

Modeling and control of HVDC grids: A key challenge for the future power system

Multi‐rate electromagnetic transient simulation of large‐scale power system based on multi‐core

Modified Quasi-Steady State Model of DC System for Transient Stability Simulation under Asymmetric Faults

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