Equivalent Modeling of Photovoltaic Power Plant Based on Factor Analysis and Correlation Clustering

Han, Pingping; Lin, Zihao; Zhang, Jingjing; Xia, Yu; Wang, Lei

doi:10.1109/access.2019.2913946

Cited by 9 publications

(4 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Since both wind turbines and PVs are new energy sources and both have small capacities, the equivalent of PV plants can be borrowed from the wind farm. Referring to the multi-turbine and single-turbine equivalent methods for wind turbines (Wang et al, 2012;Li et al, 2014), the multipanel equivalent can be regarded as the multiple single-panel equivalents for PVs with different characteristics (Han et al, 2019). These PVs are classified according to their operating characteristics to form multiple single-panel equivalent nodes (Wu et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Equivalent of distribution network with distributed photovoltaics for electromechanical transient study based on user-defined modeling

Jiang¹,

Zhao²,

et al. 2023

Front. Energy Res.

View full text Add to dashboard Cite

As more and more distributed photovoltaics (PVs) are installed in distribution networks, the dynamic characteristics of PVs affect the operation of the bulk power system. Accurate simulation of PV characteristics is essential for the needs of power system transient security and stability analysis. However, because of the large number of distributed PVs, detailed modeling of each PV significantly increases the electromechanical transient simulation time. The equivalent study of distribution networks with distributed PVs is needed to improve simulation efficiency. However, existing equivalent methods of PVs mainly focus on centralized PVs but are unsuitable for distributed PVs with significantly different dynamic characteristics. To improve simulation efficiency, this paper proposes an equivalent method of the distribution network with distributed PVs for electromechanical transient study based on user-defined (UD) modeling. Firstly, the equivalent structure of the distribution network is established. The static equivalent of the transmission lines and the dynamic equivalent model of loads are carried out. Then, a UD model based on PSASP is established for the dynamic equivalent of the distributed PVs. Compared with the current PV models in simulation software, the UD model has multiple sets of parameters for the equivalent of distributed PVs with different dynamic characteristics. Finally, the particle swarm optimization (PSO) algorithm is used to obtain the parameters of the equivalent PV. The effectiveness of the proposed method is verified under an example of a distribution network with PVs in PSASP.

show abstract

Section: Introductionmentioning

confidence: 99%

Equivalent of distribution network with distributed photovoltaics for electromechanical transient study based on user-defined modeling

Jiang¹,

Zhao²,

et al. 2023

Front. Energy Res.

View full text Add to dashboard Cite

show abstract

“…In [22], the energy conservation equation of DC-link capacitor is a theoretical basis, but the transient process of AC circuit (AC filter) is ignored, which is important for PV system short-circuit currents. Electromagnetic models [23,24] of a PV system are built, in which PV array, inverter, filter, and controller are modelled in detail. These detailed PV models are able to reflect the transient characteristics of short-circuit currents accurately; however as switching states of insulate-gate bipolar transistor (IGBTs) in a PV inverter change, there will appear several different circuit topologies.…”

Section: Introductionmentioning

confidence: 99%

A state‐space average model of a three‐level PV inverter for transient short‐circuit currents analysis

Yuan,

Wen,

Zhang

et al. 2024

IET Generation Trans & Dist

View full text Add to dashboard Cite

This paper presents a state‐space average model of a three‐level photovoltaic (PV) inverter to understand short‐circuit currents transient characteristics. Analytical solution of the model is also derived. The proposed model is validated with PV system controller hardware in‐loop (HIL) test method. The errors between simulation and HIL tests results under various conditions are evaluated, testifying the validity of the proposed model. With the model and analytical solution, the decaying time constants of sub‐transient and transient processes are derived, which shows that the time constants of a three‐level PV inverter are not fixed and they vary with voltage dips. The analytical expression of short‐circuit currents is also formulated. The findings from this study are essential to short‐circuit current calculations of a power grid with large‐scale PV plants, coordination of power system protections, and grid planning.

show abstract

“…In fact, the literature on integrated transmissiondistribution dynamic modelling has mainly dealt with complexity emerging from synchronous-based components of the transmission grid or its passive elements (e.g., transmission lines). As for on dynamic equivalent models of aggregated PV units, previous works have mainly focused on voltage disturbances, with particular focus on ride-through capability, introducing new methods such as equivalent impedance modelling, correlation clustering methods, and deep learning-based methods [18][19][20][21]. However, given recent developments in grid codes [9][10], PV units are now also required to deliver frequency response.…”

Section: Introductionmentioning

confidence: 99%

Frequency Response From Solar PV: A Dynamic Equivalence Closed-Loop System Identification Approach

Dozein

Chaspierre

Mancarella

et al. 2022

IEEE Systems Journal

View full text Add to dashboard Cite

Analysis of the frequency response of integrated transmission-distribution networks with deep penetration of solar photovoltaic (PV) generation faces major challenges due to the complexity emerging from dynamic models of the numerous and diverse PV units involved. This work proposes converterbased dynamic equivalent models for both distributed (distribution network-connected) and large-scale (transmission network-connected) PV units which take into account practical issues such as measurement and coordination delays. Differently from previous work that adopted open-loop identification, the unknown model parameters are identified here through a novel closed-loop identification process based on least-square minimization. This allows capturing the continuous interaction between system and PV responses, thus improving the outcome of the overall frequency response model. The proposed models are validated with real data from the August 2018 separation event in Australia. The results demonstrate the excellent performance of the proposed models in determining the frequency response from PV in both transmission and distribution networks, hence paving the way to its adoption in frequency stability analysis in lowcarbon grids dominated by frequency-responsive renewables.

show abstract

Equivalent Modeling of Photovoltaic Power Plant Based on Factor Analysis and Correlation Clustering

Cited by 9 publications

References 24 publications

Equivalent of distribution network with distributed photovoltaics for electromechanical transient study based on user-defined modeling

Equivalent of distribution network with distributed photovoltaics for electromechanical transient study based on user-defined modeling

A state‐space average model of a three‐level PV inverter for transient short‐circuit currents analysis

Frequency Response From Solar PV: A Dynamic Equivalence Closed-Loop System Identification Approach

Contact Info

Product

Resources

About