Critical Clearing Time and Wind Power in Small Isolated Power Systems Considering  Inertia Emulation

Some small isolated power systems have a grid infrastructure weakly meshed and stability could be seriously affected when a large amount of renewable energy is being flowed into the grid. In this paper critical clearing time (CCT) is studied along with the increase in renewable energies integration. This study considers the use of squirrel cage induction generators (SCIG) wind turbines. Battery energy storage systems (BESS) have been considered in order to overcome this kind of power system drawbacks. Thus, renewable energy integration improvement is achieved. Renewable energy improvement is analyzed by means of CCT values. Dynamic analysis is performed in order to determine CCT values taking into account voltage, system frequency and the amount of load shedding.

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“…Analyzed small isolated power system is that on Lanzarote-Fuerteventura power system expected by 2020 [11].…”

Section: System Modelingmentioning

confidence: 99%

Wind power integration improvement in an island by installing battery energy storage systems. Case study of Lanzarote-Fuerteventura.

Mejías-García¹,

Medina-Padrón²,

Medina-Domínguez³

2024

RE&PQJ

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“…Even the critical clearance time is essential in preserving the power system's transient stability [11]. Mohsen Tajdinian et al have accessed the system's transient stability in the presence of WT by critical clearing time dependent on right kinetic energy [12]. In [13], WT integration is achieved based on crucial clearing times.…”

Section: Introductionmentioning

confidence: 99%

Research on power system transient stability with wind generation integration under fault condition to achieve economic benefits

Mastoi

Tahir

Usman

et al. 2021

IET Power Electronics

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For a few decades, electric power growth and demand have increased globally. To fulfil this demand, distribution generators (DGs) have been installed in the power system. To get numerous benefits such as comprising reduction of power losses, improvement of (voltage, current, rpm) transient stability, leads to economic benefits. DGs integration in the distribution power system (DPS) was reported as an optimal generator placement (OGP) problem to maximize these benefits. This paper performs wind turbine (WT) integration while considering the internal generator's (rpm) transient stability under fault conditions. A power loss index (PLI) method is implemented to select potential candidate buses for generator placement. A self‐sorting analytical approach (SSA) is also used to determine the optimal bus and WT size. The IEEE 14‐bus DPS is used as the OGP test system to demonstrate the proposed method's effectiveness in terms of power losses reduction, system transient stability, and economic benefits. The IEEE 14 Bus system was considered using MATLAB with a 3.2 GHz processor to perform the said approach. WT integration suggested in case‐2 results in a 65.80% power losses reduction, which leads to a 60.88% enhancement of economic benefits of the DPS.

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“…This inrush current causes the voltage sag in the power system. Normally, a soft-starter, which consists of reverse-parallel connected thyristors, is used to limit the inrush current in WPGS [3]. However, a soft-starter generates harmonic currents with the switching of thyristors.…”

Section: Introductionmentioning

confidence: 99%

Reduced-Capacity Inrush Current Suppressor Using a Matrix Converter in a Wind Power Generation System with Squirrel-Cage Induction Machines

et al. 2016

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This paper describes the reduced capacity of the inrush current suppressor using a matrix converter (MC) in a large-capacity wind power generation system (WPGS) with two squirrel-cage induction machines (SCIMs). These SCIMs are switched over depending on the wind speed. The input side of the MC is connected to the source in parallel. The output side of the MC is connected in series with the SCIM through matching transformers. The modulation method of the MC used is direct duty ratio pulse width modulation. The reference output voltage of the MC is decided by multiplying the SCIM current with the variable control gain. Therefore, the MC performs as resistors for the inrush current. Digital computer simulation is implemented to confirm the validity and practicability of the proposed inrush current suppressor using PSCAD/EMTDC (power system computer-aided design/electromagnetic transients including DC). Furthermore, the equivalent resistance of the MC is decided by the relationship between the equivalent resistance and the capacity of the MC. Simulation results demonstrate that the proposed inrush current suppressor can suppress the inrush current perfectly.

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Critical Clearing Time and Wind Power in Small Isolated Power Systems Considering Inertia Emulation

Cited by 9 publications

References 24 publications

Wind power integration improvement in an island by installing battery energy storage systems. Case study of Lanzarote-Fuerteventura.

Wind power integration improvement in an island by installing battery energy storage systems. Case study of Lanzarote-Fuerteventura.

Research on power system transient stability with wind generation integration under fault condition to achieve economic benefits

Reduced-Capacity Inrush Current Suppressor Using a Matrix Converter in a Wind Power Generation System with Squirrel-Cage Induction Machines

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