Transmission expansion planning via power flow controlling technologies

The transition from conventional towards renewable energy systems requires additional transmission capacities and higher operational flexibility to overcome contingency situations. This study presents a novel transmission expansion planning approach for the simultaneous placement of AC systems and p...

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Veröffentlicht in:IET generation, transmission & distribution Jg. 14; H. 17; S. 3530 - 3538
Hauptverfasser: Franken, Marco, Barrios, Hans, Schrief, Alexander B, Moser, Albert
Format: Journal Article
Sprache:Englisch
Veröffentlicht: The Institution of Engineering and Technology 04.09.2020
Schlagworte:
AC systems
additional transmission capacities
contingency situations
controllable series impedance
equivalent phase shift
expansion costs
flexible AC transmission systems
higher operational flexibility
integer programming
linear programming
load flow control
mathematical formulations
mixed‐integer linear programming optimisation problem
operating point
optimisation
power flow
power grids
power transmission control
power transmission planning
power transmission reliability
PSTs
renewable energy systems
Research Article
simultaneous placement
synthetic 120 bus system
TCSCs
test system
thyristor applications
thyristor controlled series compensators
transmission expansion planning approach
AC systems
equivalent phase shift
integer programming
higher operational flexibility
mathematical formulations
synthetic 120 bus system
PSTs
linear programming
flexible AC transmission systems
thyristor controlled series compensators
optimisation
power transmission planning
power grids
power transmission reliability
transmission expansion planning approach
power flow
mixed-integer linear programming optimisation problem
operating point
renewable energy systems
contingency situations
TCSCs
power transmission control
simultaneous placement
load flow control
expansion costs
controllable series impedance
additional transmission capacities
thyristor applications
test system
ISSN:1751-8687, 1751-8695
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Beschreibung
Zusammenfassung:The transition from conventional towards renewable energy systems requires additional transmission capacities and higher operational flexibility to overcome contingency situations. This study presents a novel transmission expansion planning approach for the simultaneous placement of AC systems and power flow controlling technologies including high voltage direct current, phase shifting transformers (PSTs) and thyristor controlled series compensators (TCSCs). The approach is formulated as a mixed-integer linear programming optimisation problem and the operating point of power flow controlling devices is endogenously determined by minimising expansion costs. Both PSTs and TCSCs are integrated into the optimisation problem by means of new mathematical formulations. PSTs are presented in more detail considering the PST impedance, which is modelled as an equivalent phase shift. The controllable series impedance of TCSCs is also represented as an equivalent phase shift. Exemplary results based on a synthetic 120 bus system show a significant potential of PSTs and TCSCs to reduce expansion costs as well as to lower the requirement for new transmission capacities. The simultaneous employment of these technologies reduces the expansion costs within the test system between 18.7 and 32.4% compared to those costs generated by the sole reinforcement by AC systems.
ISSN:1751-8687
1751-8695
DOI:10.1049/iet-gtd.2019.1897