Towards the Robust Small-Signal Stability Region of Power Systems Under Perturbations Such as Uncertain and Volatile Wind Generation

Pan, Yanfei; Liu, Feng; Chen, Laijun; Wang, Jianhui; Qiu, Feng; Shen, Chen; Mei, Shengwei

doi:10.1109/tpwrs.2017.2714759

Cited by 40 publications

(24 citation statements)

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“…However, the output power of renewable energy hybrid distributed generations (REHDGs) such as wind and solar photovoltaic (PV) are highly variable because it depends on solar irradiation, temperature, and wind speed, which are intermittent . Hence, substantial body of research has unequivocally agreed that the variability (sudden changes) of generated power, due to these renewable resources intermittencies, relative to load or vice versa results in power system oscillations . In essence, small signal power angle instabilities occur when there is an imbalance between the total power generated from the REHDGs and other plants and the aggregate power demand at a time in the distribution network .…”

Section: Introductionmentioning

confidence: 99%

“…Undamped oscillations in the system for a period of time result in serious power quality and small signal stability issues . The small signal instability with its oscillatory behaviour can greatly threaten the power system security as it is one of the main cause of power system failures (blackout) . These have made it difficult to integrate intermittent renewable energy hybrid DG systems into power distribution systems .…”

Section: Introductionmentioning

confidence: 99%

“…3,4,14 Hence, substantial body of research has unequivocally agreed that the variability (sudden changes) of generated power, due to these renewable resources intermittencies, relative to load or vice versa results in power system oscillations. [15][16][17][18][19][20][21][22] In essence, small signal power angle instabilities occur when there is an imbalance between the total power generated from the REHDGs and other plants and the aggregate power demand at a time in the distribution network. 14,17 These issues occur more often in the power system.…”

Section: Introductionmentioning

confidence: 99%

“…23,24 The small signal instability with its oscillatory behaviour can greatly threaten the power system security as it is one of the main cause of power system failures (blackout). 18,21,22 These have made it difficult to integrate intermittent renewable energy hybrid DG systems into power distribution systems. 19,20 Meanwhile, different locations of integration and sizes of REHDG units in the DNS affect the system oscillation modes by either improving or depriving the small signal stability of the network.…”

Section: Introductionmentioning

confidence: 99%

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Towards maximising the integration of renewable energy hybrid distributed generations for small signal stability enhancement: A review

2020

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Summary Integrating renewable energy hybrid distributed generation (REHDG) into distribution network systems (DNSs) has become increasingly important because of various technical, economic, and environmental advantages accruing from it. However, the output power of REHDGs from photovoltaic (PV) and wind is highly variable because of its dependency on intermittent parameters such as solar irradiance, temperature, and wind speed. Such variability of generated power from large‐scale REHDGs or load introduces small signal instabilities (oscillations). Meanwhile, different locations of integration and sizes of REHDGs in the DNS affect the system oscillation modes by either improving or depriving the small‐signal stability (SSS) of the network. Consequently, a significant number of research has been conducted on the planning of optimal allocation of REHDGs in DNS. In this regard, this paper reviews the existing planning models, optimisation techniques, and resources' uncertainty modelling employed in REHDGs allocations in terms of their capability in obtaining optimal solutions and enhancing SSS of the system. Planning models with optimisation algorithms are evaluated for modelling renewable resource uncertainties and curtailing SSS variables. Research works on planning of optimal allocation of these generations attain minimum cost, but were unable to satisfy the SSS requirements of the system. The existing models for the planning and design of optimal timing, sizing, and placement of REHDGs will need to be improved to optimally allocate REHDGs and satisfy the SSS of the DNS after the integration.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Towards maximising the integration of renewable energy hybrid distributed generations for small signal stability enhancement: A review

2020

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“…Alguns exemplos são a análise de estabilidade dinâmica aplicada em painéis solares centralizados na rede de distribuição (REFAAT et al, 2018), e o método de condutância incremental para o controle do ponto de potência máxima do mesmo (LEE et al, 2012). Já na geração eólica, há estudos sobre estabilidade (PAN et al, 2018) e análise dinâmica do modelo desses geradores (YATIYANA; RAJAKARUNA; GHOSH, 2017).…”

Section: Introdução Objetivos Do Trabalho E Orga-nização Do Textounclassified

Modelagem, análise de estabilidade e controle da tensão da malha Z em inversores fonte de impedância

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O uso crescente de fontes alternativas de energia exige conversores de energia capazes de aumentar sua tensão nos terminais e conectá-los ao sistema de distribuição. Neste contexto, o conversor step-up clássico (conversor de potência CC/CC) e o inversor de fonte de tensão (VSI) são as soluções mais aplicadas para processar o fluxo de energia da fonte para a rede. No entanto, apresentam um baixo rendimento devido ao duplo estágio de conversão, isto é, a energia flui também através dos conversores de energia CC/CC e CC/CA. Para evitar esse tipo de desvantagem, no início da última década, o Z-Source-Inverter (ZSI) foi introduzido. Nesta nova solução, o conversor de energia CC/CC responsável por elevar a tensão nos terminais do conversor foi removido e uma rede de impedância LCLC foi adicionada com duas tarefas, ou seja, aumentar a tensão do terminal e melhorar a eficiência do ZSI. Infelizmente, os trabalhos da literatura não apresentaram um modelo matemático generalizado para apoiar os projetistas de conversores de potência na análise de estabilidade, projeto de controladores ou avaliar o ganho de tensão do conversor. Neste sentido, esta dissertação propõe o desenvolvimento de um modelo matemático completo e a análise de estabilidade da planta. Para suportar todo o desenvolvimento teórico, foi realizado um conjunto de análises no domínio do tempo e da frequência. Por fim, verificou-se o controle da tensão do elo CC para suportar todas as afirmações apresentadas neste trabalho (controle da tensão no capacitor da rede Z). Palavras-chave:Inversor tipo fonte de impedância, Conversor, Modelagem, ZSI. ABSTRACT QUINALIA, M. S. Modeling, Stability Analysis and Z Network VoltageThe growing use of alternative energy sources require power converters able to boost their terminal voltage and connect them to the distribution system. In this context, the classical step-up converter (DC/DC power converter) and the voltage source inverter (VSI) are the most applied solutions to process the power flow from the source to the grid. However, they present a low efficient because of the double stage of conversion, i.e. the power flows through the DC/DC and DC/AC power converters as well. To avoid this type of drawback, in the beginning of the last decade the impedance source inverter (ZSI) was introduce. In this new solution, the DC/DC power converter responsible for boosting the voltage at the DC-source terminals was removed and a Z (LCLC-network) was added with two tasks, i.e. boost the DC-source terminal voltage and improve the ZSI efficiency. Unfortunately, the papers in the literature did not present a generalized mathematical model to support designers of power converters in the analysis of stability, design of controllers or evaluate the voltage gain of the converter. In this sense, this thesis proposes the development of a complete mathematical model and the stability analysis of the plant. To support all the theoretical development a set of analysis in the time and frequency-domain was performed. Finally, the control of DC-link v...

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Interval Methods for Uncertain Power System Analysis

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Towards the Robust Small-Signal Stability Region of Power Systems Under Perturbations Such as Uncertain and Volatile Wind Generation

Cited by 40 publications

References 35 publications

Towards maximising the integration of renewable energy hybrid distributed generations for small signal stability enhancement: A review

Towards maximising the integration of renewable energy hybrid distributed generations for small signal stability enhancement: A review

Modelagem, análise de estabilidade e controle da tensão da malha Z em inversores fonte de impedância

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