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计及合理弃光的含储能配电网分布式光伏最大接入容量评估方法 被引量:11
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作者 吕泉 aamir saeed +4 位作者 杨丹霞 郭雪丽 刘桂百 德里达那·曼苏尔 周玮 《电网与清洁能源》 CSCD 北大核心 2023年第5期120-127,共8页
为在允许合理弃光前提下有效评价储能配置于配电网后的分布式光伏最大接入容量,该文构建了考虑弃光率约束的含储能配电网光伏最大接入容量评估模型,并通过对潮流约束和线路容量约束的线性化,将之构建为一个以年为尺度、小时为颗粒度的... 为在允许合理弃光前提下有效评价储能配置于配电网后的分布式光伏最大接入容量,该文构建了考虑弃光率约束的含储能配电网光伏最大接入容量评估模型,并通过对潮流约束和线路容量约束的线性化,将之构建为一个以年为尺度、小时为颗粒度的大规模线性规划模型。为有效提高求解效率,根据模型特征和储能运行规律,提出了场景缩减策略,有效降低了优化模型规模,并进一步通过优化场景集的迭代更新保证了解的最优性。算例结果表明,利用该文所提场景缩减策略,可将求解时间降低80%,且精度基本保持不变;同时配置储能能够明显提升邻近节点的光伏最大接入容量,提升容量与储能允许的最大充电功率之间基本呈现出线性关系,在5%的允许弃光率下,耦合系数约为0.8。 展开更多
关键词 光伏接入容量评估 配电网 储能系统 合理弃光
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Blockchain and Smart Contracts:An Effective Approach for the Transaction Security&Privacy in Electronic Medical Records
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作者 Amal Al-Rasheed Hashim Ali +1 位作者 Rahim Khan aamir saeed 《Computers, Materials & Continua》 2025年第11期3419-3436,共18页
In the domain of Electronic Medical Records(EMRs),emerging technologies are crucial to addressing longstanding concerns surrounding transaction security and patient privacy.This paper explores the integration of smart... In the domain of Electronic Medical Records(EMRs),emerging technologies are crucial to addressing longstanding concerns surrounding transaction security and patient privacy.This paper explores the integration of smart contracts and blockchain technology as a robust framework for securing sensitive healthcare data.By leveraging the decentralized and immutable nature of blockchain,the proposed approach ensures transparency,integrity,and traceability of EMR transactions,effectivelymitigating risks of unauthorized access and data tampering.Smart contracts further enhance this framework by enabling the automation and enforcement of secure transactions,eliminating reliance on intermediaries and reducing the potential for human error.This integration marks a paradigm shift in management and exchange of healthcare information,fostering a secure and privacy-preserving ecosystem for all stakeholders.The research also evaluates the practical implementation of blockchain and smart contracts within healthcare systems,examining their real-world effectiveness in enhancing transactional security,safeguarding patient privacy,and maintaining data integrity.Findings from the study contribute valuable insights to the growing body of work on digital healthcare innovation,underscoring the potential of these technologies to transform EMR systems with high accuracy and precision.As global healthcare systems continue to face the challenge of protecting sensitive patient data,the proposed framework offers a forward-looking,scalable,and effective solution aligned with the evolving digital healthcare landscape. 展开更多
关键词 Smart-contracts internet of things PRIVACY SECURITY blockchain EMR
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Machine Learning-Enabled Communication Approach for the Internet of Medical Things
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作者 Rahim Khan Abdullah Ghani +3 位作者 Samia Allaoua Chelloug Mohammed Amin aamir saeed Jason Teo 《Computers, Materials & Continua》 SCIE EI 2023年第8期1569-1584,共16页
The Internet ofMedical Things(IoMT)is mainly concernedwith the efficient utilisation of wearable devices in the healthcare domain to manage various processes automatically,whereas machine learning approaches enable th... The Internet ofMedical Things(IoMT)is mainly concernedwith the efficient utilisation of wearable devices in the healthcare domain to manage various processes automatically,whereas machine learning approaches enable these smart systems to make informed decisions.Generally,broadcasting is used for the transmission of frames,whereas congestion,energy efficiency,and excessive load are among the common issues associated with existing approaches.In this paper,a machine learning-enabled shortest path identification scheme is presented to ensure reliable transmission of frames,especially with the minimum possible communication overheads in the IoMT network.For this purpose,the proposed scheme utilises a well-known technique,i.e.,Kruskal’s algorithm,to find an optimal path from source to destination wearable devices.Additionally,other evaluation metrics are used to find a reliable and shortest possible communication path between the two interested parties.Apart from that,every device is bound to hold a supplementary path,preferably a second optimised path,for situations where the current communication path is no longer available,either due to device failure or heavy traffic.Furthermore,the machine learning approach helps enable these devices to update their routing tables simultaneously,and an optimal path could be replaced if a better one is available.The proposed mechanism has been tested using a smart environment developed for the healthcare domain using IoMT networks.Simulation results show that the proposed machine learning-oriented approach performs better than existing approaches where the proposed scheme has achieved the minimum possible ratios,i.e.,17%and 23%,in terms of end to end delay and packet losses,respectively.Moreover,the proposed scheme has achieved an approximately 21%improvement in the average throughput compared to the existing schemes. 展开更多
关键词 Machine learning Internet of Medical Things healthcare load balancing COMMUNICATION
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