Identification of modal interaction and small signal stability in autonomous microgrid operation

Krismanto, Awan Uji; Mithulananthan, Nadarajah

doi:10.1049/iet-gtd.2017.1219

Cited by 21 publications

(33 citation statements)

References 19 publications

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“…Participation factor can be expressed by Eq. (10), where right and left eigenvector are denoted by  and [28].…”

Section: Oscillatory Stabilitymentioning

confidence: 99%

Simultaneous Parameter Tuning of PSS and Wide-Area POD in PV Plant using FPA

Setiadi¹,

Abdillah²

2019

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In the future power grid scenario, large-scale renewable energy based power plant will be one of the main generations. Among renewable based power plant types, large-scale photovoltaic (PV) plant becoming more popular as they could provide zero-emission and sustainable energy. However, even though PV plants could contribute a positive impact on the environment, they could also contribute negatively to the power system. Large-scale PV generation came with a different dynamic and zero inertia characteristic due to the application of the power electronics devices. Furthermore, the PV plant has also a drawback in terms of intermittent power output due to the uncertainty of the sources. Those handicaps could deteriorate the stability performance of the power system especially oscillatory stability. Adding a power system stabilizer (PSS) to the systems is one of the ways for handling the oscillatory stability. However, with the integration of PV plants in the systems, PSS alone is not enough to handle the oscillatory problems coming from various sources such us from PV plant dynamic. Hence, utilizing wide-area power oscillation damping (POD) as a PV plant additional controller is inevitable. Hence, this paper proposed simultaneous parameter tuning between PSS and wide-area POD in PV plant using an imperialist competitive algorithm as the optimization method. The two-area power system is used to evaluate the performance of PSS and POD using FPA. From the results, it is found that the proposed method could enhance the oscillatory stability of the systems.

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“…Participation factor can be expressed by Eq. (10), where right and left eigenvector are denoted by  and [28].…”

Section: Oscillatory Stabilitymentioning

confidence: 99%

Simultaneous Parameter Tuning of PSS and Wide-Area POD in PV Plant using FPA

Setiadi¹,

Abdillah²

2019

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“…Hence, transforming the non-linear model of synchronous generator to linear model is essential. The linear model of synchronous generator is given by (1), this mathematical representation can be derived through DQ transformation. The detailed procedure for transforming non-linear synchronous generator to linear model by using DQ transformation can be found in [12].…”

Section: A Generator Exciter and Governor Modelingmentioning

confidence: 99%

“…This instability has frequency oscillation ranging from 0.1 to 2 Hz [1,2]. If this instability is not handled properly, the oscillation may grow larger and lead to loss of synchronization of the interconnected system [3].…”

Section: Introductionmentioning

confidence: 99%

Modal Analysis and Stability Enhancement of 150 kV Sulselrabar Electrical System u sing PSS and RFB based on Cuckoo Search Algorithm

Djalal¹,

Setiadi²,

Lastomo³

et al. 2017

ijeei

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Small signal stability is one of the factor to assesst the reliability of a power system. Small signal stability is related to the ability of a power system to maintain synchronization after being exposed by small disturbance. In Indonesia, the reliability of power system is one of the important aspect that has to be achieved. However, very scant attention has been paid on studied small signal stability performance on Indonesia electricity. Hence, this paper studied the small signal stability analysis and its enhancement. 150 kV Sulselrabar interconnected power system is used as test system. To enhance the performance of the system designing coordinated controller of power system stabilizer (PSS) and redox flow batteries (RFB) using cuckoo search algorithm (CSA) is conducted. Eigenvalue, damping ratio, participation factor analysis, and time domain simulation is performed to assess the small signal stability performance and the successfulness of the CSA to optimize the PSS and RFB parameter. From the cases studies, it is found that 150 kV Sulselrabar has 12 local mode and 4 inter-area mode. Furthermore, the coordinated controller between PSS and RFB based on CSA could enhance the small signal stability performance of 150 kV Sulselrabar interconnected system indicated by higher damping, smallest overshoot and fastest settling time.

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“…but no synchronous generators. It is well known that low frequency oscillations are inherent in such IMGs comprising of CDGs in grid-forming mode and passive [11]- [15] and active loads [16]. These oscillations are primarily influenced by the droop gain of the CDGs.…”

Section: Introductionmentioning

confidence: 99%

Stability of Isolated Microgrids With Renewable Generation and Smart Loads

Guo

Chen

Chaudhuri

et al. 2020

IEEE Trans. Sustain. Energy

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This paper investigates the low frequency (< 30 Hz) oscillations in isolated microgrids (IMGs) with smart loads (SLs) alongside converter-interfaced distributed generators (CDGs) fuelled by renewable energy resources (e.g. wind, solar) with battery energy storage. In an IMG with normal loads (active or passive), such oscillations are typically associated with the droop control of the CDGs operating in grid forming mode. This paper shows that SLs have marginal influence on these low frequency oscillations but introduce a new oscillatory mode at a slightly higher frequency (>20 Hz). First, the stability analysis model (linearized state-space model) of an IMG is extended to include the dynamics of a smart load with a series-shunt converter arrangement in its voltage compensator. It is shown that the dynamics of the phase-locked loop (PLL), DC link along with the control loops of the series and shunt converters of the smart load dictates the lower limit of its droop gain for stable operation. This is not apparent from the simplified SL models (i.e. neglecting the dynamics of the shunt converter and DC link) reported previously. Impact of smart loads on low frequency oscillations in IMGs is demonstrated in this paper through stability analysis and time domain simulation.

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Identification of modal interaction and small signal stability in autonomous microgrid operation

Cited by 21 publications

References 19 publications

Simultaneous Parameter Tuning of PSS and Wide-Area POD in PV Plant using FPA

Simultaneous Parameter Tuning of PSS and Wide-Area POD in PV Plant using FPA

Modal Analysis and Stability Enhancement of 150 kV Sulselrabar Electrical System u sing PSS and RFB based on Cuckoo Search Algorithm

Stability of Isolated Microgrids With Renewable Generation and Smart Loads

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