Mitigation of power system forced oscillations based on unified power flow controller

Jiang, Ping; Zhang, Fan; Feng, Shuang; Xi, Wu; Cai, Hui; Xie, Zhengchao

doi:10.1007/s40565-018-0405-5

Cited by 22 publications

(14 citation statements)

References 29 publications

(39 reference statements)

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“…A STACOM has been suggested with higher order sliding mode controller for the stability enhancement [10]. The low-frequency oscillations and forced oscillations mitigation have been done with FACTS devices with energy source [11], by shifting the resonating frequency of the system using UPFC [12]. The oscillations injected into the system due to the installation of wind farm and PV plant have been controlled by facts devises and coordinated with PSS using adaptive velocity update relaxation particle swarm optimization (AVURPSO) algorithm and compared with genetic algorithm (GA) and gravitational search algorithm (GSA) [13] and by using energy-storage unit based on the supercapacitor (SC) [14].…”

Section: Introductionmentioning

confidence: 99%

Power and energy system oscillation damping using multi-verse optimization

Devarapalli

Bhattacharyya

2021

SN Appl. Sci.

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Power system oscillations are the primary threat to the stability of a modern power system which is interconnected and operates near to their transient and steady-state stability limits. Power system stabilizer (PSS) is the traditional controller to damp such oscillations, and flexible AC transmission system (FACTS) devices are advised for the improved damping performance. This paper suggests a technique for controller parameters tuning of PSS and a shunt connected FACTS device to be operated in coordination. A static synchronous compensator (STATCOM) connected in a two-machine system is considered as a test power system for the system studies. A recent meta-heuristic algorithm, Multi-Verse optimizer (MVO) has been suggested and compared with the other state-of-the-art algorithms. Improvement in system damping has been achieved by minimizing the oscillating nature of the system states by framing the objective function as a function of damping ratio and location of poles of the system. The Phillips-Heffron model of the test system has been designed by considering the system dynamics. The coordinated system behavior under the perturbation in system parameters has been observed satisfactory with the tuned controller parameters obtained from the suggested algorithm.

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Section: Introductionmentioning

confidence: 99%

Power and energy system oscillation damping using multi-verse optimization

Devarapalli

Bhattacharyya

2021

SN Appl. Sci.

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“…This approach is effective in reducing the impact of power reference variations and grid disturbances on RES. In addition, a UPFC can provide further benefits in the operation of the power system through oscillation suppression [24]. The frequency VSG control strategy was attempted to apply to UPFC/BESS [25], which supplies virtual inertia and damping to eliminate the impact of active power fluctuations on the point of common coupling (PCC).…”

Section: Introductionmentioning

confidence: 99%

Operation of Unified Power Flow Controller as Virtual Synchronous Generator

et al. 2020

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The continuous growth of Renewable Energy (RE) in the grid reduces system inertia and damping, impacting the overall stability of power systems. To alleviate this issue, "virtual" inertia can be provided by power electronics converters. Under this functionality they are controlled to emulate the behavior of rotating machines, operating as Virtual Synchronous Generators (VSGs). However, gridconnected inverters are susceptible to voltage and frequency disturbances which negatively affect their performance. Therefore, this paper introduces a Unified Power Flow Controller (UPFC) with VSG functionality that can compensate for voltage variations at the point of common coupling and provide a constant voltage reference for the connection of remote RE systems. The detailed controlled strategy together with the small-signal analysis are also developed in this work. The UPFC-VSG is compared with an equivalent Static Synchronous Compensator (STATCOM) with centralized energy storage also under VSG control to illustrate the major benefits of the UPFC-VSG. Validation of the analysis and the proposed control method is provided through simulation of a UPFC-VSG and a STATCOM-VSG supporting the grid-connection of a 100-MVA RE system. INDEX TERMS Unified Power Flow Controller (UPFC), Virtual Synchronous Generator (VSG), inertia emulation, renewable energy, power reference variations, grid disturbances, Static Synchronous Compensator (STATCOM) NOMENCLATURE D p Damping coefficient E m Voltage amplitude reference generated by VSG E m0 Static reference of E m E ref_se Voltage reference of series converter E ref_sh Voltage reference of shunt converter E ref_st Voltage reference of STATCOM f g Grid frequency f UPFC Frequency in UPFC-VSG f STATCOM Frequency in STATCOM-VSG I RES_ST Current amplitude of RES in STATCOM-VSG I RES_UPFC Current amplitude of RES in UPFC-VSG J p Virtual inertia coefficient k V Voltage regulation coefficient k vp , k vi PI in excitation voltage generator

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“…Compared to NO, FO initiates and spreads more rapidly, and has a much higher amplitude. Therefore, FO can produce more harmful effects than NO [14]. Several research works have been carried out to locate the source of FO in power system so corrective actions can be taken.…”

Section: Introductionmentioning

confidence: 99%

A novel method for locating the source of sustained oscillation in power system using synchrophasors data

Zuhaib

Rihan

Saeed³

2020

Prot Control Mod Power Syst

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Large interconnected power systems are usually subjected to natural oscillation (NO) and forced oscillation (FO). NO occurs due to system transient response and is characterized by several oscillation modes, while FO occurs due to external perturbations driving generation sources. Compared to NO, FO is considered a more severe threat to the safe and reliable operation of power systems. Therefore, it is important to locate the source of FO so corrective actions can be taken to ensure stable power system operation. In this paper, a novel approach based on two-step signal processing is proposed to characterize FO in terms of its frequency components, duration, nature, and the location of the source. Data recorded by the Phasor Measurement Units (PMUs) in a Wide Area Monitoring System (WAMS) is utilized for analysis. As PMU data usually contains white noise and appears as multi-frequency oscillatory signal, the first step is to de-noise the raw PMU data by decomposing it into a series of intrinsic mode functions (IMF) using Improved Complete Ensemble Empirical Mode Decomposition with Adaptive Noise (ICEEMDAN) technique. The most appropriate IMF containing the vital information is selected using the correlation technique. The second step involves various signal processing and statistical analysis tools such as segmented Power Spectrum Density (PSD), excess kurtosis, cross PSD etc. to achieve the desired objectives. The analysis performed on the simulated two-area four-machine system, reduced WECC-179 bus 29 machine system, and the real-time power system PMU data set from ISO New England, demonstrates the accuracy of the proposed method. The proposed approach is independent of complex network topologies and their characteristics, and is also robust against measurement noise usually contained in PMU data.

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Mitigation of power system forced oscillations based on unified power flow controller

Cited by 22 publications

References 29 publications

Power and energy system oscillation damping using multi-verse optimization

Power and energy system oscillation damping using multi-verse optimization

Operation of Unified Power Flow Controller as Virtual Synchronous Generator

A novel method for locating the source of sustained oscillation in power system using synchrophasors data

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