Energy-Storage-Equipped Static Synchronous Compensator: Comparison of Topologies and Benefits for the Power System
Pylkkänen, Eemeli (2022)
2022
Tieto- ja sähkötekniikan kandidaattiohjelma - Bachelor's Programme in Computing and Electrical Engineering
Informaatioteknologian ja viestinnän tiedekunta - Faculty of Information Technology and Communication Sciences
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Hyväksymispäivämäärä
2022-09-15
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:tuni-202209147072
https://urn.fi/URN:NBN:fi:tuni-202209147072
Tiivistelmä
Renewable energy production is often intermittent and fluctuates depending on the weather. This can cause, for example, voltage and frequency fluctuations on the power grid. In recent years there has been a lot of research about power electronic -based solutions for these problems. Of these, one of the most potential is an energy-storage-equipped static synchronous compensator (E-STATCOM).
E-STATCOM is a device that can provide active and reactive power support for the power grid. This thesis presents the theory behind reactive power compensation, energy storages, and E-STATCOMs. The thesis also provides a literature review of different E-STATCOM topologies and compares them. In addition, the thesis covers a case study of an example system where the E-STATCOM is connected in parallel to the load. The case study was performed with simulations and experimental measurements.
One of the goals of the thesis is to show the advantages of the E-STATCOM. For example, the E-STATCOM can effectively stabilize voltages, reduce losses, and increase the capacity of the power transmission system. The thesis also found out that different E-STATCOM topologies suit different applications. The most suitable for high-voltage and high-power applications is a multi-modular topology, whereas 2-level and 3-level topologies are ideal for cost-effective small-voltage applications. The case study of the thesis showed that the E-STATCOM can provide active and reactive power support at the same time. The case study also found tangible improvements in load voltage stability when the E-STATCOM was in operation.
E-STATCOM is a device that can provide active and reactive power support for the power grid. This thesis presents the theory behind reactive power compensation, energy storages, and E-STATCOMs. The thesis also provides a literature review of different E-STATCOM topologies and compares them. In addition, the thesis covers a case study of an example system where the E-STATCOM is connected in parallel to the load. The case study was performed with simulations and experimental measurements.
One of the goals of the thesis is to show the advantages of the E-STATCOM. For example, the E-STATCOM can effectively stabilize voltages, reduce losses, and increase the capacity of the power transmission system. The thesis also found out that different E-STATCOM topologies suit different applications. The most suitable for high-voltage and high-power applications is a multi-modular topology, whereas 2-level and 3-level topologies are ideal for cost-effective small-voltage applications. The case study of the thesis showed that the E-STATCOM can provide active and reactive power support at the same time. The case study also found tangible improvements in load voltage stability when the E-STATCOM was in operation.
Kokoelmat
- Kandidaatintutkielmat [8315]