Digital Commons Network^™

Secure Communication Scheme For Power Lines Based On Ofdm-Im, Fang Chen, Sihao Zhu, Weijie Yang, Guixian Cheng, Zhou Dai

Journal of Electric Power Science and Technology

To address the illegal eavesdropping problem caused by the openness of power line communication （PLC） channels, a physical-layer secure transmission scheme, namely artificial noise added orthogonal frequency division multiplexing with index modulation （AN-added OFDM-IM ）, is proposed from the perspective of physical-layer security for wiretap PLC channels.In this scheme, the index bits are still transmitted through the states of carriers, and the modulated bits are still transmitted via active carriers, while the idle inactive carriers are used to transmit artificial noise （AN） generated based on the channel state information （CSI） between legitimate links.The secure transmission rate of the proposed scheme …

Single-Phase Grounding Fault Line Selection Method For Active Distribution Network With Energy Storage Power Stations, Xiaoran Wang, Chunju Fan, Yan Hu, Haoyu Zhu, Hulin Liu, Hai Ye, Zhongping Liu, Yong Hou

Journal of Electric Power Science and Technology

With the continuous integration of large-scale new energy, the scale of power grids and distribution networks is constantly expanding.Due to the large number of power electronic devices in the grid, the traditional fault line selection scheme for small current grounding systems can hardly ensure the line selection accuracy.To solve this problem, the fault characteristics of active distribution networks with energy storage power stations when single-phase grounding faults occur are analyzed, namely the different fault characteristics during the charging and discharging of energy storage power stations and the distribution characteristics of single-phase grounding fault current in resonant grounding systems.Then, a fault …

Optimal Configuration Of Regional Integrated Energy Systems Considering Energy Demands Across Se Miconductor Industry Chain, Bo Liu, Tao Huang, Hui Yan, Rui Liang, Yixiang Chen, Xuequan Xiao, Fanlin Meng, Shen Cao

Journal of Electric Power Science and Technology

As the construction of new power systems advances, industrial energy demands grow diverse, with significant differences across upstream, midstream, and downstream industrial chain segments.Against this backdrop, there’s an urgent need to build integrated energy systems （IES） that satisfy the energy needs of whole-industry-chain clusters.This imposes higher demands on the optimal allocation and efficient operation of IES.To this end, the semiconductor industry is taken as an example, and a strategy is proposed for optimal allocation of regional integrated energy tailored to the semiconductor whole-industry-chain energy demands.First, according to the energy consumption characteristics of each production segment, the semiconductor industry chain clusters …

Optimization Scheduling Strategy Of Integrated Energy System Considering Demand Response And Carbon Trading, Haifeng Zhang, Xiaohua Li, Xinghua Zhou

Journal of Electric Power Science and Technology

In response to output uncertainty and strong volatility of renewable energy such as wind power and photovoltaics in integrated energy systems, an optimization scheduling strategy of the integrated energy system considering demand response and carbon trading is proposed.First, the scenario generation and rapid antecedent elimination technology of Latin hypercube sampling are used to deal with the uncertainty of wind and solar power.Then, the demand response mechanism and carbon trading mechanism are combined to consider the system carbon emissions while satisfying the supply and demand balance of the energy system.A low-carbon optimization scheduling model for the integrated energy system is constructed …

Day-Ahead And Intra-Day Coordinated Optimal Scheduling For Photovoltaic Active Distribution Networks Based On Sarima Prediction Model, Yang Zhao, Zhifang Hao, Cong Wang, Xiaolin Tan, Zihao Zhao, Wei Guo, Wenyi Fan

Journal of Electric Power Science and Technology

A day-ahead and intra-day two-stage op timal scheduling method for active distribution networks based on the seasonal autoregressive integral moving average （SARIMA ） prediction model is proposed to solve the problem that the scheduling of traditional photovoltaic （PV） active distribution networks cannot fully mine the historical data of distributed PV output.Meanwhile, the affine relationship between distributed PV output prediction and distribution network optimal scheduling is established.Firstly, the historical data of distributed PV output are adopted to construct the interval boundary for PV output based on SARIMA prediction confidence level, thus forming the optimization interval for the uncertainty optimization problem.Then, by …

Sub-Synchronous Oscillation Detection In Wind Power Systems Based On Pmsst, Zhijian Liu, Cheng Tang, Ruixin Li, Hang Dong, Jikai Chen

Journal of Electric Power Science and Technology

In recent years, the rapid development of wind power has increasingly complicated the operation of power systems, with a higher risk of sub-synchronous oscillations （SSO）.The accurate and quick detection of SSO is highly important for effective countermeasures.However, the existing methods often exhibit poor noise adaptability and modal overlapping.To address these limitations, this paper proposes the parameterized multi-synchrosqueezing transform （PMSST）, which combines weighted least squares, multi-synchrosqueezing transform, and polynomial chirp transform.PMSST first applies the multi-synchrosqueezing transform to achieve a high-energy-concentration time-frequency representation.The instantaneous frequency ridges of component signals are then extracted by ridge extraction algorithms, and Weighted Least Squares is employed …

Model Predictive Control Method For Degaussing Power Supply Current In Induced Magnetic Field Of Ship, Xiaohui Yang, Wentao Huang, Huanhong Yang, Moduo Yu

Journal of Electric Power Science and Technology

A ship generates a compensating magnetic field by supplying power to multiple sets of degaussing coils, and when a single degaussing coil fails, the remaining degaussing coil current needs to be adjusted quickly.To address the difficulty of degaussing power supply to maintain the magnetic field quickly and accurately when the coils fail, this paper proposes a model predictive control method for Buck converter-type degaussing power supply current, which realizes the stable and fast control of degaussing current.By analyzing the working principles of the front and rear two-stage converters, this study develops a two-stage multi-output Buck converter state-space averaging model, based …

Research On Distribution Network Reconstruction Based On K-Nn Hybrid Genetic Algorithm, Fu Li, Zhi Zhang, Jiawei Ding, Kun Wang

Journal of Electric Power Science and Technology

In the case of widespread access to distributed generation, in order to meet the radial topology constraints of the network, the distribution network topology constraints and other constraints are considered, and a distribution network reconfiguration method based on a k-NN hybrid genetic algorithm is proposed.First, the minimum network loss, load balance, and the minimum number of circuit breaker actions are used as the objective function.The mathematical model of distribution network reconfiguration is constructed under the constraints of the power flow equation, load balance, voltage ceiling, and power ceiling.The k-NN algorithm is used to ensure that the chromosomes always meet the …

Optimization Methods Of Shared Energy Storage In Rural Multiple Transformer Districts Based On Credibility Incentive, Yanwei Zhang, Xiangbing Jiang, Zhen Li, Bo Tang

Journal of Electric Power Science and Technology

In response to the heavy overload and reverse power of transformers caused by the high proportion of distributed power sources and new loads connected to rural power distribution systems, an optimization method of shared energy storage in rural multiple transformer districts is proposed based on credibility incentive.First, a power grid-transformer district load aggregator （transformer district load aggregator, TDLA）-user system operating framework is established.An effective demand response strategy is formulated based on credibility incentives and response volume metrics are introduced, allowing TDLA to interact with users who have a large number of flexible resources, guide users to change their own electricity …

Study On Grounding Test Of Induced Voltage And Its Protection Distance In Power Transmission And Distribution Corridors, Jiong Chen, Ziyi Qin, Aiqing Ma, Maoxin Ren, Fan Yi

Journal of Electric Power Science and Technology

The extra-high voltage and ultra-high voltage transmission lines pose significant induced voltage hazards to the adjacent distribution lines beneath them, creating difficulties for distribution maintenance work.Installing grounding wires on the lines is one of the most effective protective measures against induced voltage, but there is a lack of experimental simulations and quantitative guidance that can support practical engineering.Based on the principle of induced voltage, experiments are designed to verify the effectiveness and distance limitation of induced voltage grounding protection during distribution maintenance.The influence of voltage level, number of circuits, and grounding interval distance on induced voltage is explored, and a …

Precise Feedback Decoupling Control Of A Three-Level Buck Converter Based On A Pre-Filter, Xin Fan, Jiarong Wu, Lin Yang, Weilin Wu

Journal of Electric Power Science and Technology

To improve the stability performance of a three-level Buck converter, a precise feedback decoupling control strategy based on a pre-filter is proposed.The mathematical model of the three-level Buck converter is established, and the reversibility analysis of the model is carried out based on the inverse system theory.The original model is linearly decoupled into two pseudolinear subsystems.The proportional-integral controller and the optimal controller are designed for the two subsystems, respectively to improve the performance of the system and suppress the influence of external disturbances on the system.Then, the pre-filter is designed to eliminate the adverse effects of the closed-loop zero point.Simulation …

A Distributed Trading Connection Model Between Electricity Spot Market And Green Electricity Capacity Market Based O N Perfect Equilibrium Of Subgame, Guozhong Luo, Qilin Cheng, Ming Zhu, Xiaolu Li, Gangyi Zhu, Shiyi Liu, Jun Li, Yuguo Chen, Jian Zhang

Journal of Electric Power Science and Technology

Under the guidance of the carbo n peaking and car bon neutrality policy, diversified markets such as the electricity spot market and the green electricity market coexist.In response to the mismatch in trading connections caused by the time difference between the green electricity capacity market and the electricity spot market, a distributed trading connection model between the two markets based on the perfect equilibrium of the subgame is proposed.Firstly, the cost and benefit functions of the electricity spot market are proposed, and those of the green electricity capacity market are also provided.Secondly, a trading connection model between the electricity spot …

A Single-Stage Matrix-Type Solid-State Transformer With Reduced Switching Tubes, Siwei Lin, Zhike Xu

Journal of Electric Power Science and Technology

This paper presents a single-stage matrix-type solid-state transformer （SM-SST） with reduced switching tubes.In the proposed topology, the power-frequency full bridge shares filter capacitors with high-frequency （HF） half-bridges, which effectively reduces the number of switching tubes and capacitors.The adoption of electrolytic capacitorless matrix-type topology enhances the system ’s potential reliability and power density, achieves instantaneous power balance between the source and load, eliminates ripple power with double grid frequency, and enables inherent power factor correction （PFC） without the need for a current control loop.Additionally, this paper analyzes the zero voltage switching （ZVS） characteristics under time-varying DC bus voltages.As a result, the …

Simultaneous Wireless Power And Information Transmission Technology Based On 16qam, Jian Zhang, Jie Zou, Lei Wang, Taotao Zheng, Jun Zhou

Journal of Electric Power Science and Technology

A simultaneous wireless power and information transmission （SWPIT） technology based on 16-quadrature amplitude modulation （16QAM） is proposed to achieve efficient and synchronized transmission of both power and information over a single transmission channel.The technology integrates a wireless power transfer module, a signal generation module, a transmission control module, and a signal acquisition and demodulation module to work in concert.It utilizes phase-shift control for stable transmission and soft switching operation during independent power transmission.By combining the 16QAM and the sinusoidal pulse width modulation （SPWM） technology during synchronized transmission of power and information, it also resists channel interference and ensures the accuracy …

Robust Stochastic Bidding Strategy For Combined Wind Farm And Energy Storage System Participating In Spot Markets With Multiple Uncertain Factors Considered, Yang Wu, Yuan Leng, Xiumin Huang, Zhilin Lu, Shuangquan Liu, Ziyang Liang, Mingbo Liu

Journal of Electric Power Science and Technology

Wind power enterprises struggle to guarantee their revenue in the electricity spot market due to the reverse peak regulation characteristic and the uncertainty of wind power.To address these issues, the advantages of compressed air energy storage （CAES） including large capacity, long service life, low cost, and high efficiency are utilized, and a biddin g strategy for the combined wind farm and CAES to jointly participate in the day-ahead, intraday, and real-time markets is proposed.With the goal of maximizing the system ’s revenue in the spot market, typical scenarios are used to describe the uncertainty of wind power output and intraday …

Temperature Rise And Failure Characteristics Of Zinc Oxide Resistor For Arrester Considering Pulse Current Waveform, Yutang Ma, Jun Cao, Lu Qu, Hao Geng, Jun Shi, Ziping Liu

Journal of Electric Power Science and Technology

Multiple lightning strikes can cause thermal failure of arresters under impact, posing a threat to the safe operation of the power system.This article establishes an electric-thermal instantaneous coupling model for zinc oxide resistors under multiple pulse current waveforms, proposes an integration criterion for equivalent current energy, compares the thermal characteristics of zinc oxide resistors under multiple lightning pulse waveforms, continuous pulse current waveforms, and equivalent current waveforms, and analyzes the influence of pulse current waveforms on the thermal characteristics, degradation forms, and failure mechanisms of zinc oxide resistors based on the simulation test results of impact damage of zinc oxide …

Research Review On Fire Safety Management Of Grid-Side Electrochemical Energy Storage Power Stations In New Power Systems, Xinghang Weng, Sheng Su

Journal of Electric Power Science and Technology

The grid-side electrochemical energy storage power station exhibits high flexibility in power regulation and frequency control and serves as one of the key approaches for new power systems to advance the “carbon peaking and carbon neutrality goals ” and drive the transformation of energy structure.First, the basic concepts of electrochemical energy storage power stations and their development status in China and abroad are summarized and analyzed.Then, the safety mechanism of electrochemical energy storage is analyzed based on typical fire safety accidents of global electrochemical energy storage power stations.The necessity of fire safety management is elaborated on from three dimensions, namely …

Multi-Time-Scale Rolling Optimization And Control Strategy For Hybrid Energy Storage Based On Empirical Mode Decomposition, Wenyuan Zhang, Liping Tan, Zhiqiang Xu, Qing Chen, Shijie Zhang, Yushuang He

Journal of Electric Power Science and Technology

To effectively improve the new energy accommodation level of photovoltaic （PV） transformer districts and the tie-line power fluctuation suppression capability and address the problem that various energy storage systems cannot achieve optimal output from a global perspective due to the need for secondary correction in the “optimization-first and decomposition-later ” control approach, a multi-time-scale rolling optimization and control strategy for hybrid energy storage based on empirical mode decomposition （EMD） is proposed.Firstly, the EMD is used to decompose the net load power of transformer districts into high-frequency and low-frequency modal components, which are taken as the reference output powers of the …

The Other Side Of The Wall: A Study On The Impact Of Paternal Incarceration On African American Children, Chance M. Wideman

Electronic Theses and Dissertations

This qualitative dissertation explores the long-term psychological, relational, and systemic impacts of paternal incarceration on adult children. Guided by Adverse Childhood Experiences (ACE) Theory, Attachment Theory, and Family Process Theory, this study examines two research questions:

(1) What types of childhood trauma are associated with paternal incarceration?

(2) How does the childhood trauma associated with paternal incarceration impact one in adulthood?

The study draws on three in-depth narrative interviews with adults who experienced paternal incarceration in childhood. These interviews, framed as dialogic and reflexive spaces, illuminate the deep and layered consequences of incarceration across the lifespan.

Five central findings emerged: …

Abstract By Shambhav Shriraam, Shambhav Shriraam

STEM for Success Showcase

No abstract provided.

Using Improvement Science To Examine The Effects Of The Eureka Math On Teacher Perceptions And Student Achievement In Grades 3–5, Latishia Ptomey

Education Theses and Dissertations

This Improvement Science Dissertation in Practice (ISDiP) investigates teacher perceptions of implementing Eureka Math TEKS Edition in grades three through five within a rural Central Texas district and the resulting impact on student achievement. The study employed a mixed methods design incorporating surveys, observations, and performance data collected over two academic years (2023-2025). Participants over the two years included 16 teachers, one instructional coach, and one principal at a campus of approximately 500 students in grades three through five. Teacher perceptions were analyzed to understand factors influencing curriculum fidelity, instructional practices, and classroom implementation. Concurrently, student mathematics performance was monitored …

A Stable Home, Ava Merriman

Marian Library Blog Archive

Among the multiple uses of Fitz Hall is the central space filled with over 3,600 Nativities.

Exploring Occupational Therapists' Experiences With Animal Assisted Therapy Competencies For Safe And Ethical Practice, Macy Burr

Student Dissertations

The implementation of animal-assisted therapy requires professionals to establish competencies and work with animals that possess specific characteristics and have undergone specialized training. Researchers noted a lack of uniform guidelines for practicing animal-assisted therapy in occupational therapy. The Association of Animal-Assisted Intervention Professionals recently developed a set of competencies for the safe and ethical inclusion of animals in professional settings, with a section in the appendix specifically tailored to occupational therapy. Although extensive research was conducted to develop these competencies, there is little research on their application to practice. The identified problem was the lack of research to guide the …

Ole Miss Student Joins Elite Cohort Of Newman Civic Fellows, Marisa C. Atkinson

University of Mississippi News

OXFORD, Miss. – University of Mississippi junior Emerson Morris takes pride in her community and home state, and she hopes to channel her passion to one day advocate for underserved regions of the South.

365 Midwood Street Llc V. Ballard

All Decisions

In this post-foreclosure licensee holdover under RPAPL § 713(5), the court dismissed the landlord's petition after the tenant moved for dismissal. The landlord had failed to serve a predicate notice on movant Ian Baptiste, who was initially named as "John Doe." The court ruled that RPAPL § 713 requires service of the predicate notice on every respondent, including known occupants. Unlike RPAPL § 711 proceedings, a licensee's rights under RPAPL § 713 are not derivative of a lessee, making individual service mandatory for all respondents. The use of a pseudonym did not excuse the service requirement.

Give Me Your Hungry, Your Poor: How Welfare Restrictions Perpetuate Recidivism, Kaitlyn Hammond

Vanderbilt Social Justice Reporter

No abstract provided.

Tennessee’S Families Rights And Responsibilities Act: A Risky Gamble With Adolescent Health And Safety, Oluwafunmilayo Oguns

Vanderbilt Social Justice Reporter

No abstract provided.

Looking Down The Road: The First Steps To A Public Interest Law Career, Amy Leipziger

Vanderbilt Social Justice Reporter

No abstract provided.

April 4, 1968: A Law Student’S Night In The Memphis Jail, Alex Jay Hurder

Vanderbilt Social Justice Reporter

No abstract provided.

Science Meets Shoreline, Unh Communications And Public Affairs

UNH Today Archive

No abstract provided.