Analysis and field test on reactive capability of photovoltaic power plants based on clusters of inverters

Huang, Jingsheng; Wei, Dong; Chen, Zhilei

doi:10.1007/s40565-015-0154-7

Cited by 14 publications

(16 citation statements)

References 6 publications

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“…This is recommended to model photovoltaic as either P‐V or P‐Q bus for power flow studies. The following considerations are required for modeling of photovoltaic plant in power flow studies: Only same type of inverter can be connected in parallel. The real power flow in a bus will be MVA photovoltaic plant rating. It can be modeled as a constant power with no reactive power component ( Q ), ie, unity power factor. Some inverters operate such that it allows reactive power control.…”

Section: Modeling Of Photovoltaic Generation In Power Systemmentioning

confidence: 99%

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Stochastic evaluation of voltage sag in power system network considering effect of photovoltaic generation

Khatri¹,

Kumar

Bansal

et al. 2018

Int Trans Electr Energ Syst

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Summary The present scenario need is to integrate renewable energy sources (RESs) with power grid to address the increasing concerns of environmental issues and energy demand. Apart from renewable energy integration, the quality of power delivered is also important. Among all power quality issues, the most common power quality issue is voltage sag which significantly affects industrial, commercial, and domestic users. This paper estimates the frequency of voltage sag using analytical method. This paper also analyses the change in frequency of occurrence of voltage sag when power system network is integrated with photovoltaic system. This stochastic evaluation of voltage sag is performed for 30‐bus IEEE subtransmission system. The voltage sags are evaluated at various observation buses with and without integration of photovoltaic generation. The numbers of photovoltaic generating plant are increased in order to observe variation in frequency of occurrence of voltage sag. The results are presented in terms of frequency of occurrence of voltage sag and area of vulnerability for transmission network.

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Section: Modeling Of Photovoltaic Generation In Power Systemmentioning

confidence: 99%

“…This can be inferred from various research studies that state that contribution of inverter in short‐circuit studies is very negligible. The equivalent inverter impedance during short‐circuit studies can be taken higher (as inverter has high impedance and taken as current source) …”

Section: Modeling Of Photovoltaic Generation In Power Systemmentioning

confidence: 99%

Stochastic evaluation of voltage sag in power system network considering effect of photovoltaic generation

Khatri¹,

Kumar

Bansal

et al. 2018

Int Trans Electr Energ Syst

View full text Add to dashboard Cite

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“…The power reserve in a partition R i can be calculated according to (9), which considers both the real and reactive power capabilities of ESS and VSC2 based on (4):…”

Section: Multi-objective Partition Model Of Hybrid Ac/ DC Distributiomentioning

confidence: 99%

“…In these circumstances, real time regulations of controllable devices should be applied to remain the voltage of important buses, which consequently also reduce undesirable DG curtailments and load shedding. DGs and energy storage systems (ESSs) have been investigated to achieve real-time voltage regulation in distribution networks [6][7][8][9][10][11][12]. Moreover, in order to increase transfer capacities and DG accommodations, some AC lines can be converted into DC ones and forms a hybrid AC/DC distribution network by connecting existing AC lines through voltage source converters (VSCs) [13].…”

Section: Introductionmentioning

confidence: 99%

“…In [8], real-time market transactions, online dispatch of DGs and load curtailments are deployed in order to minimize expected operating costs. The reactive power capability of inverters and the technical requirement of DGs are analyzed in [9]. An Optimal control management of ESSs is proposed to mitigate the fluctuation and intermittence of renewable generations in [10].…”

Section: Introductionmentioning

confidence: 99%

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Coordinated voltage regulation of hybrid AC/DC medium voltage distribution networks

Chen

Shen

et al. 2017

J. Mod. Power Syst. Clean Energy

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In a hybrid AC/DC medium voltage distribution network, distributed generations (DGs), energy storage systems (ESSs), and the voltage source converters (VSCs) between AC and DC lines, have the ability to regulate node voltages in real-time. However, the voltage regulation abilities of above devices are limited by their ratings. And the voltage regulation efficiencies of these devices are also different. Besides, due to high r/x ratio, node voltages are influenced by both real and reactive power. In order to achieve the coordinated voltage regulation in a hybrid AC/ DC distribution network, a priority-based real-time control strategy is proposed based on the voltage control effect of real and reactive power adjustment. The equivalence of real and reactive power adjustment on voltage control is considered in control area partition optimization, in which regulation efficiency and capability are taken as objectives. In order to accommodate more DGs, the coordination of controllable devices is achieved according to voltage sensitivities. Simulations studies are performed to verify the proposed method.

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Coordinated reactive power strategy using static synchronous compensator for photovoltaic inverters

Fatama

Khan

Kurukuru

et al. 2020

Int Trans Electr Energ Syst

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Summary Large photovoltaic (PV) penetrations into the electric grid resulted in new challenges such as reverse power flow and violation of voltage profile. The traditional methods for voltage regulation in a grid‐connected PV system are hardly adaptable to these changes as they only contain the local information which is used without the knowledge of how the control action affects the overall system. To address this problem, this paper extends the reactive power control capability of solar PV inverters by combining them with static power electronic devices for regulating voltage during grid faults. For efficient identification of grid faults, a support vector machine‐based fault classification mechanism is developed. The proposed method prioritizes the reactive power control using PV inverter by adapting a predefined hierarchical control structure. The complete methodology is realized by testing it with a two‐stage single‐phase grid‐connected PV system. The experimental results verify the accuracy of the classification algorithm and depict the effectiveness of the proposed controller in both under and overvoltage situations.

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Analysis and field test on reactive capability of photovoltaic power plants based on clusters of inverters

Cited by 14 publications

References 6 publications

Stochastic evaluation of voltage sag in power system network considering effect of photovoltaic generation

Stochastic evaluation of voltage sag in power system network considering effect of photovoltaic generation

Coordinated voltage regulation of hybrid AC/DC medium voltage distribution networks

Coordinated reactive power strategy using static synchronous compensator for photovoltaic inverters

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