Improving the Stability and Accuracy of Power Hardware-in-the-Loop Simulation Using Virtual Impedance Method

Zha, Xiaoming; Yin, Chengliang; Sun, Jianjun; Huang, Meng; Li, Qionglin

doi:10.3390/en9110974

Cited by 6 publications

(3 citation statements)

References 40 publications

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“…But its simulation step relies on the number of iterative calculations, which is not the same between solutions under different steps, causing it not suitable for real-time simulation. Apart from them, ideal transformer model (ITM) and other methods based on ITM are proposed in recent years [14][15][16][17], such as time-variant first-order approximation (TFA) method, damping impedance model (DIM) method, and so on. These methods convert the electric signals into digital signals based on the equivalent principle.…”

Section: Introductionmentioning

confidence: 99%

Real‐time simulation multi‐point decoupling method of power systems based on terminal resistor

Hao¹,

Fu²,

Xiao³

2022

IET Generation Trans & Dist

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Traditional decoupling methods in real-time simulation of complex power systems are poor in stability and unsatisfactory in use. In order to solve this problem, an improved decoupling method based on a terminal resistor is proposed. By paralleling a fixed-value resistor and inverse-paralleling a controlled current source in the traditional ideal transformer interface, the stability is greatly improved and the range of its application is broadened. Then, the value range of resistance is deduced theoretically. Furthermore, this interface is extended to the multi-point decoupling systems; the different terminal resistances in multiple interfaces under the constraints of stability and accuracy are designed. Finally, the typical single-point and multi-point decoupling systems are constructed on the Rt-lab realtime simulation platform. The simulation results verify the effectiveness of the proposed decoupling method and indicate that the design of terminal resistances is correct either in single-point decoupling systems or in multi-point decoupling systems.

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Section: Introductionmentioning

confidence: 99%

Real‐time simulation multi‐point decoupling method of power systems based on terminal resistor

Hao¹,

Fu²,

Xiao³

2022

IET Generation Trans & Dist

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“…The issues related to stability of a PHIL experiment are also highlighted in detail in referenced studies [15][16][17]. Similarly Zha et al [18] discusses the accuracy of the complete setup using virtual impedance method. However, in this paper the characterization is performed at component level by observing its dynamic behavior.…”

Section: Introductionmentioning

confidence: 99%

Power Hardware-in-the-Loop: Response of Power Components in Real-Time Grid Simulation Environment

et al. 2021

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With increasing changes in the contemporary energy system, it becomes essential to test the autonomous control strategies for distributed energy resources in a controlled environment to investigate power grid stability. Power hardware-in-the-loop (PHIL) concept is an efficient approach for such evaluations in which a virtually simulated power grid is interfaced to a real hardware device. This strongly coupled software-hardware system introduces obstacles that need attention for smooth operation of the laboratory setup to validate robust control algorithms for decentralized grids. This paper presents a novel methodology and its implementation to develop a test-bench for a real-time PHIL simulation of a typical power distribution grid to study the dynamic behavior of the real power components in connection with the simulated grid. The application of hybrid simulation in a single software environment is realized to model the power grid which obviates the need to simulate the complete grid with a lower discretized sample-time. As an outcome, an environment is established interconnecting the virtual model to the real-world devices. The inaccuracies linked to the power components are examined at length and consequently a suitable compensation strategy is devised to improve the performance of the hardware under test (HUT). Finally, the compensation strategy is also validated through a simulation scenario.

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“…The authors of [7], [8] developed an interface compensation method and performed an analytical study to ensure the stability and accuracy of a PHIL platform. Similarly, a technique to improve PHIL system stability was developed in [9] by modifying the impedance ratio between the simulated system and HUT. Modeling and characterizing a PHIL power amplifier to obtain the dynamic characteristic of the power interface for stability analysis was presented in [10].…”

Section: Introductionmentioning

confidence: 99%

Systematic Characterization of Power Hardware-in-the-Loop Evaluation Platform Stability

Wang¹,

Lundstrom²,

Mendoza³

et al. 2019

2019 IEEE Energy Conversion Congress and Exposition (ECCE)

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Improving the Stability and Accuracy of Power Hardware-in-the-Loop Simulation Using Virtual Impedance Method

Cited by 6 publications

References 40 publications

Real‐time simulation multi‐point decoupling method of power systems based on terminal resistor

Real‐time simulation multi‐point decoupling method of power systems based on terminal resistor

Power Hardware-in-the-Loop: Response of Power Components in Real-Time Grid Simulation Environment

Systematic Characterization of Power Hardware-in-the-Loop Evaluation Platform Stability

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