Modern synchronous condenser performance considerations

Marken, Paul E.; Depoian, Arthur C.; Skliutas, John; Verrier, Michael

doi:10.1109/pes.2011.6039011

Cited by 23 publications

(6 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…From Equations (9) and 10, the excitation current and reactive power would decrease monotonously due to the LOE fault. It should be noted that for different LOE faults, the duration of this transient process is different.…”

Section: Features Analysis Of the Loe Scmentioning

confidence: 99%

See 1 more Smart Citation

Synchronous Condenser’s Loss of Excitation and Its Impact on the Performance of UHVDC

Guo

et al. 2020

Energies

View full text Add to dashboard Cite

The synchronous condenser (SC) has a broad application prospect in ultra-high-voltage direct current (UHVDC) systems. The SC’s loss of excitation (LOE) is an important grid-related fault that may cause damage to the UHVDC. However, as the premise of the scientific protection configuration, knowledge of the SC’s LOE feature and its impact on UHVDC is still missing. This article first analyzes the SC’s LOE feature, offering a basic cognition of this fault. Secondly, the LOE SC’s reactive power response to system voltage variation is studied in the single-machine infinite-bus system. This lends a foundation for transient UHVDC research. Finally, the LOE SC’s impacts on steady and transient UHVDC are evaluated, respectively, considering different AC strengths and system faults through PSCAD/EMTDC (V4.6, Manitoba HVDC Research Center, Winnipeg, MB, Canada) simulations. The results show that: (1) LOE the SC absorbs reactive power while maintaining synchronous operation, its excitation current declines monotonically; (2) the LOE SC has an insignificant effect on steady-state UHVDC; (3) the LOE SC can restrain the overvoltage and benefit the rectifier’s transient stability; and (4) to reduce the inverter’s commutation failure, keeping LOE SC is more effective than separating it beforehand, while separating the LOE SC after the system voltage drop performs best. These conclusions could provide insights for the protection’s criterion and operation mode selections.

show abstract

Section: Features Analysis Of the Loe Scmentioning

confidence: 99%

“…Hence, the SC has gained increasing attention in UHVDC [9][10][11]. Until now, the State Grid Corporation of China has installed SCs in several UHVDC projects, which are summarized in Table 1.…”

Section: Introductionmentioning

confidence: 99%

Synchronous Condenser’s Loss of Excitation and Its Impact on the Performance of UHVDC

Guo

et al. 2020

Energies

View full text Add to dashboard Cite

show abstract

“…Overall, the frequency and phase angle difference constraint can be eventually derived via combining (9) and 12…”

Section: Negative Frequency Differencementioning

confidence: 99%

“…As the traditional reactive power compensation device with large capacity, the synchronous condenser can lower the HVDC system sensitivity to CF, effectively improving the fault recovery performance of the overall system and avoiding the second drop of the commutating bus voltage [8]. Compared with other power electronics based reactive power compensation equipment (e.g., SVC, STATCOM), the synchronous condenser has following advantages [9]- [15]:…”

Section: Introductionmentioning

confidence: 99%

Improving Grid-Connection Reliability and Safety of Synchronous Condensers With Start-Up Process Optimization

et al. 2020

View full text Add to dashboard Cite

The new-type synchronous condenser uses the uncontrollable and irreversible freewheeling grid-connection mode during the start-up process, so that considerable rates of grid-connection failure could be observed in case of strict grid-connection criterions. Therefore, this paper proposes an optimized start-up process for the new-type synchronous condenser, with the effort to improving its grid-connection reliability and safety. This optimized process involves two new approaches, namely freewheeling speed ratio regulation and starting freewheel point setting, to adjust the covered range of the freewheeling speed over time, which indirectly expands the allowable initial phase angle difference and thus achieves an increased grid-connection success rate under strict grid-connection conditions. The effectiveness of the proposed optimized process incorporating the two new approaches is validated using statistical analysis in Matlab, as compared to the conventional freewheeling process without optimization. The results show that the successful grid-connection operations of the synchronous condensers can be guaranteed in strictest cases at the cost of a slight increase of the starting freewheeling point (from 105% to around 107%) with 99% rated freewheeling speed ratio.

show abstract

“…For example, two 225 Mvar synchronous condensers for Tegala substation have been committed to increase short circuit current level, voltage support capability, and system inertia in California, USA [6]. Several studies [7]- [13] have also shown the benefits of SCs on the short circuit current contribution, improved voltage regulation and voltage stability, and frequency stability enhancement. Even though conventional power plants can be refurbished into synchronous condensers as a costeffective approach [14], [15], the conventional power plants may not always serve as the best locations for SCs and newly-installed ones can be anticipated.…”

Section: Introductionmentioning

confidence: 99%

Investigation on the Combined Effect of VSC-Based Sources and Synchronous Condensers Under Grid Unbalanced Faults

Jia

Yang

Nielsen

et al. 2019

IEEE Trans. Power Delivery

View full text Add to dashboard Cite

 Users may download and print one copy of any publication from the public portal for the purpose of private study or research.  You may not further distribute the material or use it for any profit-making activity or commercial gain  You may freely distribute the URL identifying the publication in the public portal If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim.

show abstract

Modern synchronous condenser performance considerations

Cited by 23 publications

References 3 publications

Synchronous Condenser’s Loss of Excitation and Its Impact on the Performance of UHVDC

Synchronous Condenser’s Loss of Excitation and Its Impact on the Performance of UHVDC

Improving Grid-Connection Reliability and Safety of Synchronous Condensers With Start-Up Process Optimization

Investigation on the Combined Effect of VSC-Based Sources and Synchronous Condensers Under Grid Unbalanced Faults

Contact Info

Product

Resources

About