Comparative analysis of probabilistic and deterministic approach to tune the power system stabilizers using the directional bat algorithm to improve system small-signal stability

The increasing penetration of wind power plant introduces a various effect on power system stability, operation and control. Unpredictable, uncertain and fluctuating circumstances can significantly affect the performance of power system. Moreover, employment of novel technologies in wind power plant significantly alter the control characteristic and operation procedure of power system to deal with load variations and fast changing of generated power from wind-based power plant. One of the main focus in integrating large scale wind power plant is how to maintain voltage stability under transient and steady state scenarios. In this paper, effects of large-scale wind power plants on voltage stability of power system is investigated. Practical test system of South-West Sulawesi, Indonesia with integration of two large scale wind power plants are considered. Hence the novelty of this paper is to introduce new and practical test system for power system stability study considering renewable energy integration. The simulation results suggest that the additional power injection from wind power plant introduces beneficial effects on power system voltage stability performance. It was monitored that the increasing power injection from wind power plant enhanced the voltage profile (0.96 pu to 0.975 pu), voltage margin and load-ability (200 MW to 215 MW) of the system. Furthermore, it was also observed that additional power injection from wind power plant significantly improved the dynamic voltage stability performance of the power system, ensuring stable operation under transition stages when the power system was subjected to disturbances.

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“…Using the presented wind power curve, the generated power from wind power plant can be formulated as given by the following equation [18], [19].…”

Section: Wind Power Plant Dynamic Modelmentioning

confidence: 99%

Impact of Large-Scale Wind Power Penetration on Dynamic Voltage Stability of Interconnected Power System: An Indonesia Case Study

Krismanto¹,

Sulistiawati²,

Limpraptono³

et al. 2021

IJIES

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“…In the study of small signal stability damping torque and stable synchronization are essential to maintain the small signal stability. Low-frequency oscillation can be classified as a local (with the frequency oscillation around 0.7 to 2 Hz) or global mode or inter-area mode (frequency oscillation ranging from 0.1 to 0.7 Hz) [25]. For small signal stability study linearized equation of nonlinear algebraic and differential equation (DAE) is used to represent of power system.…”

Section: Small Signal Stabilitymentioning

confidence: 99%

Influence of Adding BESS as Ancillary Controller of Wind Power Plant on Low Frequency Oscillation

Setiadi¹

2021

IJIES

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This paper introduces the influence on integrating battery energy storage system (BESS) as ancillary controller of wind power plant in small signal stability. Modified two area power system is used as the test system. The modification has been made by replacing one synchronous generator with wind and PV generation. Modal analysis and phase portrait analysis are used to investigate the influence of adding BESS on wind power plant. From the simulation results it is found that the small signal stability performance can be enhance by adding BESS as ancillary controller of wind power plant. This result indicated by increasing damping performance on the critical mode. Furthermore, the oscillatory condition is more damped compared to the base case scenarios. These results indicated by the smallest circular on the phase portrait analysis. Moreover, by adding BESS as ancillary controller the structured singular value (SSV) of the investigated system is 0.8321. It can be stated that the proposed method is robust against uncertainty (SSV must below 1).

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“…In reference [20], a theorem is established to transform the rapid changes present in periodic delays into distributed delays; these are treated in [21], through which for a linearized system, it can be represented by equation (6).…”

Section: B Probabilistic Model Of Time Delaymentioning

confidence: 99%

“…Due to system factors, the disturbances in conjunction with the operating conditions of the system are stochastic. In addition, the communication delay, several other power system parameters have an undesirable effect on SSS [6].…”

Section: Introductionmentioning

confidence: 99%

Adaptive Tuning of Power System Stabilizer Using a Damping Control Strategy Considering Stochastic Time Delay

Oscullo

Gallardo

2020

IEEE Access

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The operation of a modern electrical system presents complex operating conditions, and uncertainty factors increased by the presence of variable and flexible loads. This stochastic operating point variation can promote low-frequency oscillations, and like the conventional power system stabilizer (PSS) features static tuning, it does not provide sufficient damping. Today, an electrical system is monitored through online measurements from the wide-area measurement system (WAMS); moreover, it enables stochastic dynamics to be tracked as the remote signals of WAMS system, the time delay due to the communication channel. It is interesting to analyze the incorporation of the PSS of signals from the WAMS without the time delay effect that degrades the small-signal stability (SSS) and, in turn, allows adaptive tuning. Through two stages, at first, the subspace of the operating point is determined based on a distribution of consumption levels. Each operating point considered a random time delay. For each subspace, establish a bank of tuned PSSs. Second, through the optimal classification and the regression decision tree (CART), the classification rules for the subspace are determined, allowing classifying the measurements of WAMS. The proposed methodology is applied to the New England of 66-bus system and Ecuadorian electric system to demonstrate that the adaptive tuning of PSSs significantly improves SSS under different scenarios and is probabilistic robust, considering the time delay.

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Comparative analysis of probabilistic and deterministic approach to tune the power system stabilizers using the directional bat algorithm to improve system small-signal stability

Cited by 33 publications

References 35 publications

Impact of Large-Scale Wind Power Penetration on Dynamic Voltage Stability of Interconnected Power System: An Indonesia Case Study

Impact of Large-Scale Wind Power Penetration on Dynamic Voltage Stability of Interconnected Power System: An Indonesia Case Study

Influence of Adding BESS as Ancillary Controller of Wind Power Plant on Low Frequency Oscillation

Adaptive Tuning of Power System Stabilizer Using a Damping Control Strategy Considering Stochastic Time Delay

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