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Fostering response-abilities : exploring more-than-human histories through remake activities

- Jukes, Scott

  • Authors: Jukes, Scott
  • Date: 2023
  • Type: Text , Book chapter
  • Relation: Learning to confront ecological precarity : engaging with more-than-human worlds Chapter 8 p. 135-158
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  • Description: In this chapter I explore remake activities. Remake activities reuse and recycle waste materials, working them into something useful. The experiential activity seems to be prevalent, yet limited literature covers creative ways of thinking about pedagogical approaches. The chapter examines some of the emerging waste education literature before exploring further possibilities for remake activities, using the example of paddle making as a pedagogical practice in outdoor, environmental and sustainability education. I perform a new materialist praxis for paddle making, enacting a diffractive investigation into a piece of timber as a way of framing paddle making activities. I present the investigation as a narrative that considers the life of the timber and the broader ecological history of the material. This charts ethical and environmental problems relating to particular forests whilst posing different ways of conceptualising timber. Through this, I offer an example of the pedagogical diffractions that can be made during remake activities. In summary, the chapter attends to materiality in divergent ways, through the use of new materialist ideas, to open up educational possibilities. © 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.

Fractional-order sequential model predictive control of three-phase fractional-order T-type converters

- Long, Bo, Hu, Chengkun, Chen, Zhihao, Hu, Jiefeng, Rodríguez, Jose, Zang, Xian

  • Authors: Long, Bo , Hu, Chengkun , Chen, Zhihao , Hu, Jiefeng , Rodríguez, Jose , Zang, Xian
  • Date: 2023
  • Type: Text , Journal article
  • Relation: IEEE Journal of Emerging and Selected Topics in Power Electronics Vol. 11, no. 6 (2023), p. 5820-5832
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  • Description: — Three-level T-type converters (3LT2C) with LCL filters are widely used in distributed generation (DG) systems because of their smaller size and better harmonic attenuation. The 3LT2C have many control objectives such as neutral-point (NP) voltage balancing, resonance damping, and grid current tracking. Therefore, model predictive control (MPC) with excellent dynamic characteristics and multiobjective control capability has become the most common control method. However, MPC control relies on accurate mathematical models, and the existing integer order modeling ignores its fractional-order characteristics. The reflected physical characteristics are not sufficient, so an accurate model is needed to improve the control performance. In this article, we propose a fractional-order state-space model based on the Grünwald–Letnikov (GL) definition and investigate a fractional-order sequential model predictive control (FOSMPC). First, the GL definition is used to establish the state-space model of the fractional-order grid-connected converter to realize the discretization processing and numerical calculation of the fractional-order system. Second, the multiobjective lexicographical optimization method is used to realize the SMPC to balance the NP voltage and grid-connected current reference tracking. Finally, the effectiveness of FOSMPC in controlling fractional-order 3LT2C was experimentally demonstrated. © 2023 IEEE. Personal use is permitted, but republication/redistribution requires IEEE permission.

Fruits and vegetable powders

- Jiang, Hao, Zhang, Min, Adhikari, Benu

  • Authors: Jiang, Hao , Zhang, Min , Adhikari, Benu
  • Date: 2023
  • Type: Text , Book chapter
  • Relation: Handbook of Food Powders: Chemistry and Technology, Second Edition Chapter 24 p. 423-436
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  • Description: Fruits and vegetables are rich in vitamins, carotenoids, ascorbic acid, minerals and dietary fibre; however, they are climacteric and their shelf-life is very short after harvest. Uncontrolled browning, wilting and loss of nutritional value are typical of fresh fruits and vegetables even at ambient temperature and relative humidity (RH). When converted into powder form, they are easy to preserve, transport, store and use as ingredients. The greatly reduced water content and water activity help prolong the shelf-life of fruit and vegetable powders. The loss of important nutrients can also be minimized during the powder production process by judiciously selecting the drying methods and encapsulating shell materials. © 2024 Elsevier Ltd. All rights reserved.

Gender construction and the invisibility of women’s accounting activities: the All Nations’ Fair of 1895

- Halabi, Abdel, Miley, Frances, Read, Andrew

  • Authors: Halabi, Abdel , Miley, Frances , Read, Andrew
  • Date: 2023
  • Type: Text , Journal article
  • Relation: Accounting, auditing, & accountability Vol. 36, no. 5 (2023), p. 1298-1318
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  • Description: Purpose This research explores the historical nexus between accounting and gender to illuminate male hegemonies within accounting. It examines the nature of that hegemony at the boundary between the female domain of household and philanthropic activities and the male domain of business and finance. Design/methodology/approach A qualitative research approach is used for this historical research. The primary source was digitised newspapers from the National Library of Australia. Newspapers have been used in previous historical accounting research and are relevant in this instance because they provide the only surviving data about the All Nations’ Fair. Given that newspapers were published daily, the depth of coverage is not replicated by other archival sources, and at that time provided a strong community voice. Findings Women undertook the management of and accounting for the All Nations’ Fair, a philanthropic activity designed to rescue the Geelong Cricket and Football Club from its parlous financial position. Despite women undertaking the work, the management of and accounting for, the Fair was attributed to men. This reflects a gendered construction of accounting that overpowers the reality of who undertook the work. Research limitations/implications This research demonstrates only a single example of women’s philanthropic accounting, so is not generalisable. It suggests however that male hegemonies have exerted and continue to exert power over women. Originality/value The value of this paper is that historical examples serve as a corrective to histories that have ignored women’s contribution to accounting, particularly in philanthropic activities. The relationship between women’s accounting and gender also has contemporary significance. Gendered disadvantage and subjugation to a dominant masculine hegemony remain recurring themes in accounting research because they continue to impact adversely on the experiences of many women in accounting.

Graph lifelong learning : a survey

- Febrinanto, Falih, Xia, Feng, Moore, Kristen, Thapa, Chandra, Aggarwal, Charu

  • Authors: Febrinanto, Falih , Xia, Feng , Moore, Kristen , Thapa, Chandra , Aggarwal, Charu
  • Date: 2023
  • Type: Text , Journal article
  • Relation: IEEE Computational Intelligence Magazine Vol. 18, no. 1 (2023), p. 32-51
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  • Description: Graph learning is a popular approach for perfor ming machine learning on graph-structured data. It has revolutionized the machine learning ability to model graph data to address downstream tasks. Its application is wide due to the availability of graph data ranging from all types of networks to information systems. Most graph learning methods assume that the graph is static and its complete structure is known during training. This limits their applicability since they cannot be applied to problems where the underlying graph grows over time and/or new tasks emerge incrementally. Such applications require a lifelong learning approach that can learn the graph continuously and accommodate new information whilst retaining previously learned knowledge. Lifelong learning methods that enable continuous learning in regular domains like images and text cannot be directly applied to continuously evolving graph data, due to its irregular structure. As a result, graph lifelong learning is gaining attention from the research community. This survey paper provides a comprehensive overview of recent advancements in graph lifelong learning, including the categorization of existing methods, and the discussions of potential applications and open research problems. © 2005-2012 IEEE.

Grid impedance detection based on complex coefficient filter and full-order capacitor current observer for three-phase grid-connected inverters

- Wang, Kaixin, Yang, Yong, Fan, Mingdi, Tang, Yuhang, Li, Haoyang, Chen, Rong, Hu, Jiefeng, Zeng, Weibo, Rodriguez, Jose

  • Authors: Wang, Kaixin , Yang, Yong , Fan, Mingdi , Tang, Yuhang , Li, Haoyang , Chen, Rong , Hu, Jiefeng , Zeng, Weibo , Rodriguez, Jose
  • Date: 2023
  • Type: Text , Journal article
  • Relation: IEEE Transactions on Power Electronics Vol. 38, no. 2 (2023), p. 2408-2420
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  • Description: This article proposes a new grid impedance detection method incorporating the complex coefficient filter (CCF) with full-order capacitor current observer for a T-type three-level grid-connected inverter controlled by the inverter output current feedback. Compared with conventional CCF impedance detection algorithms, the proposed method reduces the number of current sensors and detects the grid impedance accurately. First, based on the sampled inverter output current and grid-connected voltage signals, the grid-connected current is estimated. Then, the CCF method is used to extract harmonics from the grid-connected current and voltage signals to calculate the grid impedance. Finally, the correctness of the full-order capacitor current observer is verified by simulation and the feasibility and effectiveness of the proposed algorithm are verified experimentally based on a laboratory prototype. © 1986-2012 IEEE.

Healing, faith and fear : church opening in the United States during COVID-19 restrictions

- Smith, Naomi, Snider, Anne-Marie

  • Authors: Smith, Naomi , Snider, Anne-Marie
  • Date: 2023
  • Type: Text , Journal article
  • Relation: Journal of Contemporary Religion Vol. 38, no. 2 (2023), p. 283-304
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  • Description: This article examines how resistance to stay-at-home orders was framed to congregants through sermons and in statements to media outlets. Using an approach informed by grounded theory, we analysed news articles of church behaviour and the YouTube videos of sermons from pastors that protested against COVID-19 guidelines from March 2020 to November 2020. We also draw on legal filings to identify churches that most actively resisted closures. In analysing these publicly available data, a relationship between church openings in the United States and an evangelical theology of resistance particular to non-denominational churches to public health efforts emerged. Our analysis found that ‘largely evangelical’ churches that are not considered part of a mainline evangelical denomination were more likely to seek ways to remain open in defiance of public health orders. We use the terms ‘largely evangelical’ and ‘mainline evangelical’ to distinguish these two very different denominational families. Evidence from this article suggests that evangelical Christian churches in the US that are not considered ‘mainline evangelical’ denominations (e.g. non-denominational, Pentecostal) were more likely to resist stay-at-home orders and more prepared to be legally active in resisting such policies and gather indoors (as opposed to Catholic churches and ‘mainline evangelical’ denominations). © 2023 Informa UK Limited, trading as Taylor & Francis Group.

How hr analytics can leverage big data to minimise employees' exploitation and promote their welfare for sustainable competitive advantage

- Biswas, Kumar, Bhardwaj, Sneh, Zaman, Sawlat

  • Authors: Biswas, Kumar , Bhardwaj, Sneh , Zaman, Sawlat
  • Date: 2023
  • Type: Text , Book chapter
  • Relation: Handbook of Big Data Research Methods Chapter 12 p. 179-194
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  • Description: Big Data leveraged Human Resource Management Analytics (HRA) can enable HR professionals to make objective decisions in effectively managing key HR functions such as recruitment, training, development, compensation. Despite the abundance of benefits of using HRA to manage people in the organization more objectively than ever before, scholars and practitioners have been raising concerns over the potential misuse of HRA to discriminate against a particular group of people who may not be aware of disparate HR practices. As part of this bigger picture, this chapter investigates how HRA can leverage big data to minimize employee exploitation and promote employee welfare to sustain competitive advantage. This chapter provides comprehensive articulation of the key concepts related to HR analytics, Big Data and delineates how big-data-driven HR analytics can be (mis)used for people management. Our chapter draws on critical challenges HR professionals experience in adopting big data leveraged HR analytics. Finally, this chapter concludes with a set of proactive and reactive measures that are to be adhered to minimize HRA-related biases to uphold the philosophy of equity and diversity and sustain the organization's branding as an employer of choice. © Editors and Contributors Severally 2023. All rights reserved.

Identification of fake news : a semantic driven technique for transfer domain

- Ferdush, Jannatul, Kamruzzaman, Joarder, Karmakar, Gour, Gondal, Iqbal, Das, Raj

Identifying the most important research, policy and practice questions for substance use, problematic alcohol use and behavioural addictions in autism (SABA-A): A priority setting partnership

- Sinclair, Julia, Aslan, Betul, Agabio, Roberta, Anilkumar, Amith, Brosnan, Mark, Day, Ed, Dowling, Nicki, Flood, Chelsey, Grant, Jon, Halliday, Robyn, Hofvander, Björn, Howes, Leesa, Moseley, Rachel, Myers, Bronwyn, O'Connor, Vincent, Shaya, Gabriel, Thomas, Shane, Robinson, Janine, Chamberlain, Samuel

  • Authors: Sinclair, Julia , Aslan, Betul , Agabio, Roberta , Anilkumar, Amith , Brosnan, Mark , Day, Ed , Dowling, Nicki , Flood, Chelsey , Grant, Jon , Halliday, Robyn , Hofvander, Björn , Howes, Leesa , Moseley, Rachel , Myers, Bronwyn , O'Connor, Vincent , Shaya, Gabriel , Thomas, Shane , Robinson, Janine , Chamberlain, Samuel
  • Date: 2023
  • Type: Text , Journal article
  • Relation: Comprehensive Psychiatry Vol. 124, no. (2023), p. 152393-152393
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  • Description: Autistic people are more likely to report problematic alcohol and other substance use when compared to the general population. Evidence suggests that up to one in three autistic adults may have an alcohol or other substance use disorder (AUD/SUD), although the evidence base for behavioural addictions is less clear. Autistic people may use substances or engage in potentially addictive behaviours as a means of coping with social anxiety, challenging life problems, or camouflaging in social contexts. Despite the prevalence and detrimental effects of AUD, SUD and behavioural addictions in community samples, literature focusing on the intersection between autism and these conditions is scarce, hindering health policy, research, and clinical practice. We aimed to identify the top 10 priorities to build the evidence for research, policy, and clinical practice at this intersection. A priority-setting partnership was used to address this aim, comprising an international steering committee and stakeholders from various backgrounds, including people with declared lived experience of autism and/or addiction. First, an online survey was used to identify what people considered key questions about Substance use, alcohol use, or behavioural addictions in autistic people (SABA-A). These initial questions were reviewed and amended by stakeholders, and then classified and refined to form the final list of top priorities via an online consensus process. The top ten priorities were identified: three research, three policy, and four practice questions. Future research suggestions are discussed. •Little is known about the overlap between autism and addiction, yet both are common.•This priority-setting partnership identified the top research, policy and clinical practice questions regarding this overlap•Identification of these priorities will assist researchers and experts, and policy makers to address key knowledge gaps.

Identity and intersectional responsive pedagogy in higher education : insights from two locations in regional and urban Australia

- Goriss-Hunter, Anitra, Archer, Verity, Arvanitakis, James

  • Authors: Goriss-Hunter, Anitra , Archer, Verity , Arvanitakis, James
  • Date: 2023
  • Type: Text , Book chapter
  • Relation: Inclusion, equity, diversity, and social justice in education: a critical exploration of the sustainable development goals Chapter 13 p. 181-196
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  • Description: In this chapter, we investigate the ways in which academics’ identity factors can impact their work experiences and pedagogies in two Australian tertiary institutions. While there is a body of literature that interrogates the concept of diversity in higher education, most of the research focuses on diverse student populations rather than examining academic diversity. Current research does not explore in depth the ways in which intersections of identity factors such as gender, race, class, and able-bodiedness might impact academics’ experiences in the chiefly middle-class-institutions that comprise the Australian Higher Education landscape. The authors employed a mixed methods approach. To collect data for the project, we constructed an anonymous online Qualtrics survey and invited participation from academics working at one regional and one urban university. The survey consisted of a mixture of open and closed questions concerning the relationship between identity and teaching approaches within universities. Responses were coded, and common themes were examined by the researchers using an intersectional approach. The survey findings reveal that academics who identify as equity group members see these identities as a strength in teaching and interactions with students, however, these identities sometimes give rise to tensions with colleagues and can be seen as a barrier to career progression.

Image based probabilistic slope stability analysis of soil layer interface fluctuations with Brownian bridges

- Wijesinghe, Dakshith, Dyson, Ashley, You, Greg, Khandelwal, Manoj, Ooi, Ean Tat

  • Authors: Wijesinghe, Dakshith , Dyson, Ashley , You, Greg , Khandelwal, Manoj , Ooi, Ean Tat
  • Date: 2023
  • Type: Text , Journal article
  • Relation: Engineering Failure Analysis Vol. 148, no. (2023), p.
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  • Description: Accurate interpretation of stratigraphic profiles, the phreatic surface and the spatial variability of geomaterials are essential to produce representative behaviour of geomechanical systems through numerical simulations. When considering slope stability, variations in soil layer boundaries and the phreatic surface may result in misleading metrics such as the Factor of Safety (FoS) and the Probability of Failure (PoF). This paper presents an image-based technique for generating continuous stratigraphic profiles, including random fluctuations based on Brownian motion. Brownian bridges are used to produce random walks between known points on both soil layer boundaries and the phreatic level that overlap with the slope profile image. Quadtree decomposition is used to discretise the stratigraphy and the phreatic level through an automatic process using generated digital images for mesh generation while also integrating material properties. The Scaled Boundary Finite Element (SBFEM) is used to analyse the slope stability problem. Images based on random walks along an unknown stratigraphic material boundary and the phreatic surface are randomly generated and have many random possibilities, which are used to undertake probabilistic analysis to obtain PoF. This process is complex when using numerical methods, such as the Finite Element Method, as it requires mesh generation from different slope profiles with alternating material interfaces at each probabilistic instance. When the Scaled Boundary Finite Element Method is applied, probabilistic numerical analyses can be fully automated for randomly generated material interfaces. The feasibility of the proposed method is illustrated through several cases of a slope with multiple material layers, in addition to a slope incorporating a Brownian bridge phreatic surface formulation. © 2023 Elsevier Ltd

Impedance-matching-based maximum power tracking for magnetic field energy harvesters using active rectifiers

- Li, Yong, Duan, Na, Liu, Zhaowei, Hu, Jiefeng, He, Zhengyou

  • Authors: Li, Yong , Duan, Na , Liu, Zhaowei , Hu, Jiefeng , He, Zhengyou
  • Date: 2023
  • Type: Text , Journal article
  • Relation: IEEE Transactions on Industrial Electronics Vol. 70, no. 10 (2023), p. 10730-10739
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  • Description: Increasing the power harvested from magnetic field energy harvesters (MFEHs) without expanding their volumes is crucial. Conventional methods for improving power harvest, e.g., flux-shaping capacitor and transfer window alignment techniques, are not applicable under varying primary current and load conditions. To address this vital problem, in this article, we present a control strategy of MFEHs based on impedance-matching theory, which considers the nonlinear characteristic of magnetic energy sources and can track the maximum power under varying current and load conditions based on an active rectifier. A calculation formula is derived to determine the optimal initial operating point of the active rectifier circuit, which aims to adjust the equivalent impedance to achieve maximum power tracking. An experimental prototype is constructed to verify the effectiveness of the proposed method. It is found that the proposed method enhances the harvested power under different current and load conditions, particularly in deep saturation conditions. The experimental results show that the proposed MFEH can harvest an average power of 2.51 W on an 800

Implementation strategies to promote compassionate nursing care of complex patients : an exploratory sequential mixed methods study

- Younas, Ahtisham, Porr, Caroline, Maddigan, Joy, Moore, Julia, Navarro, Pablo, Whitehead, Dean

  • Authors: Younas, Ahtisham , Porr, Caroline , Maddigan, Joy , Moore, Julia , Navarro, Pablo , Whitehead, Dean
  • Date: 2023
  • Type: Text , Journal article
  • Relation: Journal of Nursing Scholarship Vol. 55, no. 4 (2023), p. 805-824
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  • Description: Introduction: Individuals with multiple physical and, or, mental health issues and, or, drug-related problems are known as complex patients. These patients are often recipients of poor-quality care. Compassionate nursing care is valuable to promote better care experiences among this patient population. Implementation strategies should be designed to enhance compassionate nursing care delivery. The study aimed to gain understanding of barriers to compassionate care delivery to propose implementation to promote compassionate nursing care of complex patients. Design: An exploratory sequential mixed methods study was conducted. Methods: Phase 1 was the qualitative component during which 23 individuals with multimorbidities were interviewed for exploring their perceptions of barriers to compassionate nursing care. The barriers were integrated with implementation science frameworks using the building technique during phase 2 to develop a Q-sort survey of implementation strategies for phase 3. Nurses, nurse managers, health care administrators, policymakers, and compassionate care experts responded to the survey by ranking the 21 implementation strategies, out of which five met the Q-factor analysis criteria. Results: Participant-perceived barriers to nurse compassion could be categorized under knowledge, intentions, skills, social influences, behavioral regulation, reinforcement, emotion, and environmental context and resources. The five highest-ranked strategies included facilitation, consultation with stress experts, involvement of patients and families, modeling compassion through shadowing, and utilizing implementation teams. Conclusions: Enablement and modeling were the integration functions represented by the highest-ranked implementation strategies. Enabling nurses to provide compassionate care through emotional support and mental health counseling, and, modeling compassion and compassionate care through shadowing were recommended and rated as highly relevant by the majority of stakeholders. Clinical Relevance: Enhancing nurses compassionate behaviors toward complex patients requires facilitating them in enacting compassion in practice through modeling and support from organizations and nurse managers. © 2023 Sigma Theta Tau International.

Improved switching scheme to reduce the junction temperature and power loss of CHB inverters

- Afrin, Sadia, Biswas, Suvra, Bin Islam, Md Sabbir, Islam, Md Rabiul, Shah, Rakibuzzaman

Improved voltage balancing discontinuous PWM scheme for solar PV Fed grid-tied NPC inverters

- Hossain, Shahriar, Biswas, Shuvra, Islam, Md Rabiul, Shah, Rakibuzzaman

Inclusion of animals in allied health practice in Australia : a beginning exploration

- Bennett, Bindi, Gates, Trevor, Yeung, Polly, Evans, Krystal

  • Authors: Bennett, Bindi , Gates, Trevor , Yeung, Polly , Evans, Krystal
  • Date: 2023
  • Type: Text , Journal article
  • Relation: Social Work in Mental Health Vol. 21, no. 3 (2023), p. 269-284
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  • Description: Working with domesticated animals in allied health fields continues to evolve in Australia. We sought to gain an understanding of practitioners’ knowledge, skills, and actions when working with domestic animals in Australia. Adapting methods and measurements from a study performed in Aotearoa New Zealand, the current study surveyed 28 allied health practitioners analyzing the extent animals have been incorporated into practice in Australia, and the practice considerations made to domestic animal welfare and ethics. This research showed a continuing lack of clear workplace policies, support or professional training, and a call for ethical guidelines when working in partnership with animals. © 2022 Taylor & Francis.

Inclusion, equity, diversity, and social justice in education in the twenty-first century

- Goriss-Hunter, Anitra, Burke, Jenene, Weuffen, Sara, Plunkett, Margaret, Emmett, Susan

  • Authors: Goriss-Hunter, Anitra , Burke, Jenene , Weuffen, Sara , Plunkett, Margaret , Emmett, Susan
  • Date: 2023
  • Type: Text , Book chapter
  • Relation: Inclusion, equity, diversity, and social justice in education: a critical exploration of the sustainable development goals Chapter 1 p. 1-10
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  • Description: The chapter offers a road map that charts the key issues raised in this edited collection that contributes to the United Nations Sustainable Development Goal (SDG) series. Throughout the book, questions are raised, tensions observed, and practices highlighted, often through passionate discussion, regarding the ways in which considerations of equity, inclusion, and social justice are configured, challenged, observed, or ignored in a range of educational settings. All chapters address the United Nations Sustainable Development Goal 4: Quality Education which advocates for the provision of inclusive and equitable education and the promotion of lifelong learning for all. This chapter extends the focus of diversity, inclusion, and social justice to examine the inclusive approaches embedded in the production of the book. Rejecting potentially exclusionary publication processes, the editors mobilized inclusive approaches to selecting, reviewing, and editing chapters and the development of edited scholarship. Focusing on connections and capacity building, a diverse range of authors, reviewers, and editors worked together in a supportive, inclusive, and encouraging framework to produce an interwoven contemporary narrative about the state of diversity and inclusion in mainstream education settings.

Individualism, collectivism, and well-being among a sample of emerging adults in the United States

- Nezlek, John, Humphrey, Ashley

  • Authors: Nezlek, John , Humphrey, Ashley
  • Date: 2023
  • Type: Text , Journal article
  • Relation: Emerging Adulthood Vol. 11, no. 2 (2023), p. 520-524
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  • Description: An increasing body of research suggests that emerging adults living in Western societies are becoming more individualistic and such increases in individualism are associated with reduced well-being. The present study examined relationships between well-being and individualism and collectivism among 1906 emerging adults in the US, aged 18–25. We measured individualism and collectivism distinguishing horizontal and vertical dimensions of these constructs, and we measured well-being in terms of depression, anxiety, self-esteem, interpersonal relationships, and neuroticism. Regression analyses found that individualism was negatively related to well-being, and these relationships varied somewhat between horizontal and vertical individualism. Horizontal collectivism was positively related to all measures of well-being, and vertical collectivism was positively related to three measures. These findings increase our understanding of the roles individualism and collectivism play in the psychological well-being of emerging adults, including the importance of distinguishing horizontal and vertical dimensions of individualism and collectivism. © 2021 Society for the Study of Emerging Adulthood and SAGE Publishing.

Interactive distribution expansion and measurement planning considering controlled partitioning

- Ghamsari-Yazdel, Mohammad, Esmaili, Masoud, Amjady, Nima, Chung, C.

  • Authors: Ghamsari-Yazdel, Mohammad , Esmaili, Masoud , Amjady, Nima , Chung, C.
  • Date: 2023
  • Type: Text , Journal article
  • Relation: IEEE Transactions on Smart Grid Vol. 14, no. 4 (2023), p. 2948-2959
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  • Description: To model interactions among system expansion, controlled partitioning (CP), and observability, an integrated multi-period framework is developed in this paper for simultaneous planning of distribution systems and measurements with CP constraints (DSMP-CP) in unbalanced multi-phase networks. The proposed framework, employing the network AC model, is formulated as a mixed-integer quadratically-constrained programing problem. This problem minimizes investment costs (including the costs of feeder reinforcement, distributed generation (DG) placement, and allocation of micro-phasor measurement units and their measuring channels) and operation costs (including the costs of DG operation, energy purchased from the upstream grid (UG), re-dispatching of DG and UG injections, and energy curtailment). A phase-based observability function is also introduced to ensure the observability of all phases of buses. Furthermore, the concept of zero-injection (ZI) property is proposed for ZI groups considering physical connections and mutual impedances among phases to enhance observability efficiency and avoid suboptimal solutions. To enhance problem tractability and eliminate linearization errors, a duality-based solution approach is proposed employing an exactness loop with recursive re-linearization. The performance of the proposed framework is evaluated by testing it on the unbalanced IEEE 111-node and 256-node distribution test systems. © 2010-2012 IEEE.