Synchronous Condensers Contribution to Inertia and Short Circuit Current in Cooperation with STATCOM

Stiger, A.; Rivas, Richard A.; Halonen, Mikael

doi:10.1109/gtdasia.2019.8715893

Cited by 8 publications

(3 citation statements)

References 4 publications

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“…It is studied that SCs provide inertia and large short-circuit current during grid faults, improving the system frequency and voltage performances [23][24][25][26][27]. In addition, the SC improves the transient stability of the power system with GFL inverters [28].…”

Section: ⅰ Introductionmentioning

confidence: 99%

Grid Strengthening IBR: An Inverter-Based Resource Enhanced by a Co-Located Synchronous Condenser for High Overcurrent Capability

Nie

Wang

2022

IEEE Open J. Power Electron.

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With the increasing penetration of inverter-based resources (IBRs) and the standing down of synchronous generatorbased resources (SGBRs), some IBRs, at least, need to provide grid support functions commonly provided by SGBRs. IBRs usually have a much smaller overcurrent capability than SGBRs, which can result in weak grid strength and corresponding issues on grid transient voltage support, system protection, and black start. This paper aims at addressing the low overcurrent capability issue of IBRs from the source side by combining an IBR with a co-located synchronous condenser (SC). Dubbed grid strengthening IBR (GSI), the proposed setup in grid forming mode uses the SC to regulate the terminal voltage and the IBR to regulate the frequency. The proposed GSI is evaluated through its comparison with an SGBR in the single-unit operation considering different grid faults, multi-unit operation, and transient stability performance. It is verified that the GSI can provide an overcurrent and maintain the terminal voltage comparable to or even slightly better than the SGBR during grid faults. The GSI does not have any transient stability issues; even after a long fault period, it can reestablish the system synchronism. The GSI can help the penetration of the IBRs in the system, as the system operation and the system loads will be largely unaffected, even during transients. INDEX TERMS Grid strengthening inverter-based resources, synchronous condenser, synchronous generator, overcurrent capability, transient stability, voltage support.

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Section: ⅰ Introductionmentioning

confidence: 99%

Grid Strengthening IBR: An Inverter-Based Resource Enhanced by a Co-Located Synchronous Condenser for High Overcurrent Capability

Nie

Wang

2022

IEEE Open J. Power Electron.

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“…With the evolution of relatively low-cost power electronics-based static compensators, their popularity got decreased [29]. However, in the recent years, SCs have regained some attention due to its ability to supplement the grid inertia, improve the short-circuit level of the network increasing the system strength, which could potentially solve the dilemmas which arise due to large scale integration of RES [30][31][32][33].…”

Section: Introductionmentioning

confidence: 99%

“…Study shows that SCs has the potential of improving the short-circuit ratio of the grid. In [33], the combination of SC with STATCOM is explored to find their contribution towards improving transient stability when connected to a very strong infinite source, whereas in [31] only a general overview on the potential of SC in improving system strength is provided. All the literature we reviewed focus on the contribution of SC in improving the frequency stability of the network.…”

Section: Introductionmentioning

confidence: 99%