Advanced application of transient stability constrained‐optimal power flow to a transmission system including an HVDC‐LCC link

Calle, Ignacio A.; Ledesma, Pablo; Castronuovo, Edgardo D.

doi:10.1049/iet-gtd.2015.0215

Cited by 16 publications

(13 citation statements)

References 29 publications

(54 reference statements)

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“…For many decades researchers have recognised the possibilities multi-terminal high-voltage dc (HVDC) transmission networks can offer when compared with well-established high-voltage ac systems [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15]. For the majority of this period, the difficulty of power reversal in complex multi-terminal networks based on line commutating converter high-voltage dc (LCC-HVDC) technology has prevented development of generic dc grids with seamless control over the power flow in any of its branches [16].…”

Section: Introductionmentioning

confidence: 99%

Review of dc–dc converters for multi‐terminal HVDC transmission networks

Adam

Gowaid

Finney

et al. 2016

IET Power Electronics

159

105

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This paper presents a comprehensive review of high-power dc-dc converters for high-voltage direct current (HVDC) transmission systems, with emphasis on the most promising topologies from established and emerging dc-dc converters.Additionally, it highlights the key challenges of dc-dc converter scalability to HVDC applications, and narrows down the desired features for high-voltage dc-dc converters, considering both device and system perspectives. Attributes and limitations of each dc-dc converter considered in this study are explained in detail and supported by time-domain simulations. It is found that the front-to-front quasi two-level operated modular multilevel converter, transition arm modular converter and controlled transition bridge converter offer the best solutions for high-voltage dc-dc converters that do not compromise galvanic isolation and prevention of dc fault propagation within the dc network. Apart from dc fault response, the MMC dc auto transformer and the transformerless hybrid cascaded two-level converter offer the most efficient solutions for tapping and dc voltage matching of multi-terminal HVDC networks. Key words:High-voltage dc-dc converter; modular multilevel converter; multi-terminal high-voltage dc networks; and prevention of dc faults propagation.I.

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Section: Introductionmentioning

confidence: 99%

Review of dc–dc converters for multi‐terminal HVDC transmission networks

Adam

Gowaid

Finney

et al. 2016

IET Power Electronics

159

105

View full text Add to dashboard Cite

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“…Previous works on TSCOPF implement the TS constraint as a limit on the rotor angles, typically 100°with respect to the COI angle [22][23][24][25]. This constraint is well suited for small power systems, Fig.…”

Section: Ts Criterionmentioning

confidence: 99%

“…The main drawbacks of this approach are the size and complexity of the resulting model. Previous works that use this technique are usually applied to small systems [22][23][24] and use the classical synchronous generator model, though this model is generally regarded as inaccurate for TS studies [25]. Significant advances in terms of computational time have been achieved using dedicated solvers [26] and parallel computing [27], though these works are also limited to the classical generator model.…”

Section: Introductionmentioning

confidence: 99%

Multi‐contingency TSCOPF based on full‐system simulation

Ledesma

Calle²,

Castronuovo

et al. 2017

IET Generation, Transmission & Distribution

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Transient stability constrained optimal power flow (TSCOPF) is a non-linear optimisation problem used to perform economic dispatches while ensuring TS. This study proposes a multi-contingency TSCOPF model that retains the dynamics of all generators and includes a transient synchronous generator fourth-order dq-axis model. A program is developed that automatically reads the system data from standard files, builds the multiple-contingency TSCOPF model on a high-level modelling system and solves it using a non-heuristic interior point algorithm. This approach facilitates the application of the model to a variety of systems and scenarios. A TSC based on the speed deviation instead of the rotor angle is proposed. Results obtained on several standard systems are shown. The proposed method is applied to the northwest Spanish transmission system to obtain an optimised dispatch that ensures TS after any of a number of faults, and to assess the economic impact of fault-clearing times at different substations. Nomenclature

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“…For example, [21] highlights the conflict between transient stability and the economic objective and propose a risk-averse multi-objective generation dispatch model to balance this. In [22], transient stability is included in the economic dispatch problem, minimising risk of transient instability.…”

Section: Introductionmentioning

confidence: 99%

An investigation into spatial and temporal aspects of transient stability in power systems with increasing renewable generation

Hamilton

Papadopoulos

Bell

2020

International Journal of Electrical Power & Energy Systems

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This paper investigates the impact of generator dispatch (dictated by cost) and locational aspects related to renewable generation connection and consequent disconnection of synchronous generation, on transient stability. As conventional synchronous generation (SG) is displaced by power electronic converter interfaced generation (PEC), the transient behaviour of the power system may change significantly due both to the changed power flows resulting from the different locations of renewables compared with thermal plant and the different dynamic characteristics of PEC. This paper uses an AC Optimal Power Flow (OPF) to determine credible, minimum cost dispatches of generation in a test network with increasing penetration of PEC in different locations. It is found that the critical locations of the system can vary significantly with respect to economic dispatch, location of disconnection of SG and location of PEC, highlighting the increasing temporal and spatial change in system dynamic behavior.

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Advanced application of transient stability constrained‐optimal power flow to a transmission system including an HVDC‐LCC link

Cited by 16 publications

References 29 publications

Review of dc–dc converters for multi‐terminal HVDC transmission networks

Review of dc–dc converters for multi‐terminal HVDC transmission networks

Multi‐contingency TSCOPF based on full‐system simulation

An investigation into spatial and temporal aspects of transient stability in power systems with increasing renewable generation

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