Development of an open source power flow software for high voltage direct current grids and hybrid AC/DC systems: MATACDC

Beerten, Jef; Belmans, Ronnie

doi:10.1049/iet-gtd.2014.0545

Cited by 65 publications

(34 citation statements)

References 20 publications

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“…represents the admittance between the AC grid and converter station; i f B represents the AC filter, which is usually omitted in power flow analysis [19,20];…”

Section: Modeling Of Vsc-mtdcmentioning

confidence: 99%

Security-Constrained Multi-Objective Optimal Power Flow for a Hybrid AC/VSC-MTDC System With Lasso-Based Contingency Filtering

2020

IEEE Access

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In order to coordinate the economy and voltage quality of a meshed AC/VSC-MTDC system, a new corrective security-constrained multi-objective optimal power flow (SC-MOPF) method is presented in this paper. A parallel SC-MOPF model with N-1 security constraints is proposed for corrective control actions of the meshed AC/DC system, in which the minimization of the generation cost and voltage deviation are used as objective functions. To solve this model, a novel parallel bi-criterion evolution indicator based evolutionary algorithm (BCE-IBEA) algorithm is developed to seek multiple well-spread Pareto-optimal solutions through the introduction of parallel computation. In this process, a least absolute shrinkage and selection operator (Lasso)-based N-1 contingency filtering scheme with a composite security index is developed to efficiently screen out the most severe cases from all contingencies. And thereby, the best compromise solutions reflecting the preferences of different decision makers are automatically determined via an integrated decision making technique. Case studies in the modified IEEE 14-and 300bus systems demonstrate that the presented approach manages to address this SC-MOPF problem with significantly improved computational efficiency.INDEX TERMS AC/DC system, multi-objective optimization, optimal power flow, VSC-HVDC, decision making, contingency filtering ,2 c PI are the c PI values, which are respectively obtained by using the Lasso approach and the direct computation according to (19).

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“…represents the admittance between the AC grid and converter station; i f B represents the AC filter, which is usually omitted in power flow analysis [19,20];…”

Section: Modeling Of Vsc-mtdcmentioning

confidence: 99%

Security-Constrained Multi-Objective Optimal Power Flow for a Hybrid AC/VSC-MTDC System With Lasso-Based Contingency Filtering

2020

IEEE Access

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“…The rated DC voltage is 10 kV. VSC1 is rated voltage controlled, and VSC2 is Figures 11 and 12 show the voltage variation and active branch power flow variation calculated by the proposed models and PFC 27 when the output of each DG is 700 kW. Figure 13 shows the results of line loss variation error comparison.…”

Section: Sensitivity Analysis Considering DC Distribution Systemmentioning

confidence: 99%

Power sensitivity models with wide adaptability in active distribution networks considering loops and DC networks

Liu

Wang

et al. 2019

Int Trans Electr Energ Syst

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Summary Because of the high penetration of distributed generation, energy storage systems, and flexible loads, nodal power injections in active distribution networks (ADNs) would vary frequently and significantly. Thus, it becomes crucial to accurately and quickly assess the influence of power injection variations on key operation status of ADNs, such as nodal voltages, line losses, and branch power flows. Meanwhile, modern ADNs may include nonradial and DC network segments, which make power flow analysis more complicated. In this paper, power flow models of ADNs while considering nonradial topologies and hybrid AC/DC networks are analyzed to derive a suite of power sensitivity models with wide adaptability, including a quadratic sensitivity model of nodal power injections to line losses, a linear sensitivity model of nodal power injections to nodal voltages, and a quadratic and a simplified linear sensitivity models of nodal power injections to branch powers. Numerical results evaluate the accuracy and efficiency of the proposed sensitivity models.

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“…a line outage. Anyway, this optimisation is embedded in the open-source software MatACDC [13,14], that can calculate an ACDC power flows. It may be that the approximation does not give acceptable results and a second iteration is necessary.…”

Section: Optimisationmentioning

confidence: 99%

“…With DC voltage limits of U LimU p = 1.1pu and U LimDow = 0.9pu is Z = 0.0065pu. To get a better result, is with equation (13) a new DC reference voltage U ref DC17 = 0.9782pu calculated. Equation (14), would alternatively calculate the optimal DC reference voltage at node 6.…”

Section: Case Studymentioning

confidence: 99%

Optimal dc reference voltage in HVDC grids

Renner

Beerten

Hertem

2015

11th IET International Conference on AC and DC Power Transmission

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In a HVDC grid, power energy equilibrium must be guaranteed at every moment to prevent DC voltage to increase or decrease to unacceptable values. Contrary to the frequency in an AC power system, the DC voltage cannot be assumed to be the same throughout the system, since a DC voltage difference is necessary to have a current flow. To operate HVDC grids as far as possible from DC voltage stability limits, the selection of the DC reference voltage and DC reference node are crucial factors. This paper introduces a method to find the optimal DC voltage in a HVDC grid based on power flow and line resistances. The method is implemented in the open-source software MatACDC and the results are verified by dynamic simulations in DIgSILENT, using a one area DC voltage restoration controller.

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Development of an open source power flow software for high voltage direct current grids and hybrid AC/DC systems: MATACDC

Cited by 65 publications

References 20 publications

Security-Constrained Multi-Objective Optimal Power Flow for a Hybrid AC/VSC-MTDC System With Lasso-Based Contingency Filtering

Security-Constrained Multi-Objective Optimal Power Flow for a Hybrid AC/VSC-MTDC System With Lasso-Based Contingency Filtering

Power sensitivity models with wide adaptability in active distribution networks considering loops and DC networks

Optimal dc reference voltage in HVDC grids

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