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2022 Conference on Infrared, Millimeter, Terahertz Waves and applications, IMT 2022

作者： Niu, Xiaochen Huang, Jie Chen, Shuo Liu, Zhanyuan Lu, Lifeng State Grid Smart Grid Research Institute Co. Ltd. China Electric Power Intelligent Sensing Technology Application of State Grid Corporation Joint Laboratory China

ISBN: (纸本)9781510662476

A system of long-distance power-over-fiber (PoF) was developed, with the research of the nonlinear effect of single-mode fiber, 1550nm photovoltaic cell and power supply. The distance of energy and information transmission is more than 20km. Two low-loss windows of single-mode fiber are separated by a WDM. The band of 1550nm is used for energy transmission and 1310nm for communication. A 1550nm photovoltaic cell with multi junctions was customized, and the photoelectric conversion efficiency reaches 39.8%. Two stage boost circuit are used for maximum energy capture, and the super capacitor is used to achieve stable power supply. The system realizes the shooting of a picture every 10 seconds, and sends back with the data of temperature and humidity. © 2023 SPIE.

关键词： Photovoltaic effects

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PS3: Precise Patch Presence Test Based on Semantic Symbolic Signature 24

PS3: Precise Patch Presence Test Based on Semantic Symbolic ...

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44th ACM/IEEE International Conference on Software Engineering, ICSE 2024

作者： Zhan, Qi Hu, Xing Li, Zhiyang Xia, Xin Lo, David Li, Shanping Zhejiang University The State Key Laboratory of Blockchain and Data Security Hangzhou China Zhejiang University Hangzhou China Software Engineering Application Technology Lab Huawei China Singapore Management University Singapore

ISBN: (纸本)9798400702174

During software development, vulnerabilities have posed a significant threat to users. Patches are the most effective way to combat vulnerabilities. In a large-scale software system, testing the presence of a security patch in every affected binary is crucial to ensure system security. Identifying whether a binary has been patched for a known vulnerability is challenging, as there may only be small differences between patched and vulnerable versions. Existing approaches mainly focus on detecting patches that are compiled in the same compiler options. However, it is common for developers to compile programs with very different compiler options in different situations, which causes inaccuracy for existing methods. In this paper, we propose a new approach named PS3, referring to precise patch presence test based on semantic-level symbolic signature. PS3 exploits symbolic emulation to extract signatures that are stable under different compiler options. Then PS3 can precisely test the presence of the patch by comparing the signatures between the reference and the target at semantic level. To evaluate the effectiveness of our approach, we constructed a dataset consisting of 3,631 (CVE, binary) pairs of 62 recent CVEs in four C/C++ projects. The experimental results show that PS3 achieves scores of 0.82, 0.97, and 0.89 in terms of precision, recall, and F1 score, respectively. PS3 outperforms the state-of-the-art baselines by improving 33% in terms of F1 score and remains stable in different compiler options. © 2024 ACM.

关键词： Software design

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Key technologies research and application of green power traceability based on blockchain 2

Key technologies research and application of green power tra...

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2023 2nd International Conference on New Energy, Energy Storage and Power Engineering, NESP 2023

作者： Wen, Tingting Li, Da Duan, Tingting Guo, Qinglei Zhao, Lihua State Grid Digital Technology Holding Co. Ltd. Beijing100053 China Co. Ltd. Beijing100053 China Blockchain Technology Laboratory of State Grid Corporation of China Beijing China

Green power traceability is a crucial link to ensure the green power transactions' authenticity, effectiveness and credibility. It's an essential means to promote the large-scale development of green power. However, there are many links in the whole chain of green power. The data involves multiple departments and institutions. So it is not easy to trace the authenticity. This paper first introduces the entire chain of green power traceability and critical information. Secondly, it proposes the green power traceability scheme and key technologies. Then, it designs the system and functional architecture of green power traceability based on blockchain. Finally, it analyses the application effect of the system in green power trading and the Winter Olympics. This research provides the technical reference for the authenticity and traceability of green power. It helps the green-low-carbon transformation of energy consumption structure. © Published under licence by IOP Publishing Ltd.

关键词： blockchain

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Security Assessment Model for blockchain Software and Hardware Fusion Device Based on Decision Tree Algorithm

Security Assessment Model for Blockchain Software and Hardwa...

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Internet of Things, Robotics and Distributed Computing (ICIRDC), International Conference on

作者： Ke Yang Shuang Sun Mingyang Lei Weiyu Wang Xiukui Pan State Grid Digital Technology Holding Co. Ltd. Beijing China State Grid Blockchain Technology (Beijing) Co. Ltd. Beijing China State Grid Blockchain Application Technology Laboratory Beijing China

As the core hub for carrying various blockchain applications upstream and connecting network infrastructure downstream, blockchain infrastructure provides necessary storage, transmission, computing, development, and testing for the implementation of blockchain applications. This article attempts to propose a security evaluation model for blockchain software and hardware fusion devices based on decision tree algorithms. From the perspective of blockchain technology architecture, it fully reveals the security risks of evaluated blockchain projects for software and hardware fusion devices. It is necessary to conduct a comprehensive analysis of various technologies that affect the security risks of blockchain software and hardware fusion devices. By reusing the kernel through decision tree algorithm, a system chip that meets predetermined requirements can be quickly constructed, integrating processor modules and some commonly used functional modules. The research results indicate that the detection rate of the experimental group model is consistently higher than that of the traditional model. During the detection rate process, the average value of the experimental group is as high as 89.3%, which is much higher than the traditional model. Furthermore, the error detection rate curve remains at the lowest position, indicating the effectiveness of the proposed evaluation model.

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Design of Incentive Mechanism for Carbon Data Circulation and Sharing Based on blockchain 14th

Design of Incentive Mechanism for Carbon Data Circulation an...

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14th International Conference on Computer Engineering and Networks, CENet 2024

作者： Shen, Wentao Guo, Qinglei Du, Zhe Wen, Tingting Pan, Xiukui Bai, Desheng State Grid Digital Technology Holdings Co. Ltd. Beijing100053 China Co. Ltd Beijing100053 China Blockchain Technology Laboratory of State Grid Corporation of China Beijing100053 China

ISBN: (纸本)9789819649624

In the context of worsening global climate change, the transition to a low-carbon economy has become an urgent task for the international community. The sharing and circulation of carbon emission data is of great significance to improve the effectiveness of emission reduction measures and promote the development of the global carbon market. In order to promote carbon neutrality, solve the security needs of carbon data sharing, and promote the realization of carbon data circulation and carbon neutrality goals, this paper designs a carbon data sharing architecture that supports carbon data circulation, and proposes a blockchain-based carbon data sharing incentive mechanism. Data information entropy and participation enthusiasm are used to evaluate the performance of carbon data providers from multi-dimensional carbon data value measurements, and the fairness of the Shapley value algorithm is improved to adjust the benefit distribution among multiple contributors. Finally, the simulation experiments designed in this paper show that compared with the fixed-value incentive mechanism, the incentive mechanism in this paper can effectively increase the amount of carbon data in the carbon data sharing platform. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2025.

关键词： blockchain Data Sharing Incentive Mechanism

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A Blind Batch Encryption and Public Ledger-Based Protocol for Sharing Sensitive Data

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China Communications 2024年第1期21卷 310-322页

作者： Zhiwei Wang Nianhua Yang Qingqing Chen Wei Shen Zhiying Zhang School of Computer Sciences Nanjing University of Posts and TelecommunicationsNanjing 210023China Dept.of Intelligent Science and Information Law East China University of Political Science and LawShanghai 201620China Key Laboratory of Computational Science and Application of Hainan Province Hainan Normal UniversityHaikou 571158China State Key Laboratory of Public Big Data Guizhou UniversityGuizhou 550025China Yunnan Key Laboratory of Blockchain Application Technology Yunnan Innovation Research Institute of Beijing University of Aeronautics and AstronauticsKunming 650233

For the goals of security and privacy preservation,we propose a blind batch encryption-and public ledger-based data sharing protocol that allows the integrity of sensitive data to be audited by a public ledger and allows privacy information to be *** owners can tightly manage their data with efficient revocation and only grant one-time adaptive access for the fulfillment of the *** prove that our protocol is semanticallly secure,blind,and secure against oblivious requesters and malicious file *** also provide security analysis in the context of four typical attacks.

关键词： blind batch encryption data sharing onetime adaptive access public ledger security and privacy

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Energy Loss Analysis of Distributed Rooftop Photovoltaics in Industrial Parks

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Energy Engineering 2023年第2期120卷 511-527页

作者： Yu Xiao Kai Li HongqiaoHuang Haibo Tan Hua Li State Grid Hunan Electric Power Corporation Limited ChangshaChina Hunan Province Key Laboratory of Intelligent Electrical Measurement and Application Technology ChangshaChina Hunan Institute of Metrology and Inspection ChangshaChina

The analysis of the loss of distributed photovoltaic power generation systems involves the interests of energy users,energy-saving service companies,and power grid companies,so it has always been the focus of the industry and society in some manner or ***,the related analysis for an actual case that considers different cooperative corporations’benefits is lacking in the presently available *** paper takes the distributed rooftop photovoltaic power generation project in an industrial park as the object,studies the analysis and calculation methods of line loss and transformer loss,analyzes the change of transformer loss under different temperatures and different load rates,and compares the data and trend of electricity consumption and power generation in industrial parks before and after the photovoltaic *** paper explores and practices the analysis method of the operating loss of distributed photovoltaic power generation and provides an essential reference for the benefit analysis and investment cost estimation of distributed photovoltaic power generation systems in industrial *** analyzed results reveal that the change loss is stable after the photovoltaic is connected,and there is no additional transformer *** before and after the photovoltaic system installation,there was no significant change in the total monthly data difference between the total meter and the sub-meter.

关键词： Distributed photovoltaic generation line loss transformer loss power generation

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Communication Protocol Optimization of Electric Low Power Wireless Sensor Network Based on Active Wakeup 1

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10th Frontier Academic Forum of Electrical Engineering, FAFEE 2022

作者： An, Chunyan Huang, Ziwei State Grid Smart Grid Research Institute Co. Ltd. Beijing102209 China Electric Power Intelligent Sensing Technology and Application of State Grid Corporation Joint Laboratory Beijing102209 China

ISBN: (数字)9789819934089

ISBN: (纸本)9789819934072

Most electric sensors are powered by battery and have strict requirements on energy consumption. The existing communication protocol of electric low power wireless sensor network (e-LPWSN) usually periodically wakes up sensors to save energy. This paper studies the communication protocol optimization of existing e-LPWSN based on active wakeup, where energy consumption is further reduced by minimizing not only the wake-up times, but also the retransmission due to channel collision. Besides, the proposed method can support both ACK and alarm transmission. Simulation results have shown that the proposed method can greatly improve data transmission success rate, and can reduce the energy consumption of sensors by more than 20%. © 2023, Beijing Paike Culture Commu. Co., Ltd.

关键词： Energy utilization

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Research on Transfer Printing Process Optimization for Flexible Piezoelectric Energy Harvester

Research on Transfer Printing Process Optimization for Flexi...

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2023 Panda Forum on Power and Energy, PandaFPE 2023

作者： Gao, Zhidong Li, Chunlong Huang, Hui Zeng, Pengfei Tian, Haoyang State Grid Smart Grid Research Institute Co. Ltd Elec. Power Intelligent Sensing Technology and Application State Grid Corporation Joint Laboratory Beijing China State Grid Shanghai Electric Power Research Institute Shanghai China

ISBN: (纸本)9798350321173

With the rise and development of flexible energy harvester, transfer printing has become the key technology affecting the success rate of flexible energy harvester manufacturing. And some brittle micro structures are very easy to fail in the complex transfer printing, resulting in the transfer success rate has been very low. In this paper, optimized seal transfer printing process is proposed, and the transfer release time is shorten to 10min by studying the influence of different sacrificial layer materials and different ratios of corrosion liquid on the release time of the structure from the rigid substrate, meanwhile, the corrosion resistance of the photoresist protective layer is improved by studying the influence of different coating rotation speed on the glue floating time, then, through the above work, the success rate of the seal transfer printing process is improved. © 2023 IEEE.

关键词： Photoresists

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Research on the operation strategy of electric vehicle aggregation participating in power grid peak shaving auxiliary service based on blockchain 2

Research on the operation strategy of electric vehicle aggre...

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2nd International Conference on Cloud Computing and Mechatronic Engineering, I3CME 2022

作者： Bai, Desheng Zhou, Lei Yang, Ke Zhao, Lihua Wang, Hejian Duan, Tingting Feng, Jingli State Grid E-Commerce Co. Ltd. Beijing China Blockchain Technology Laboratory of State Grid Corporation of China Beijing China

ISBN: (纸本)9781510657502

Electric vehicles have become an important adjustable, controllable and flexible resource of the power grid. It is urgently needed to guide and regulate their electricity consumption behavior through market-oriented means to achieve better balanced matching and control with the multi-level grid divisional power generation and electricity consumption curves. This article uses blockchain technology to quantitatively analyze the cost and potential benefits of electric vehicles participating in peak-shaving auxiliary services, establish a strategy for the aggregation of electric vehicles to participate in grid peak-shaving auxiliary services, and guide and regulate electric vehicle power consumption behavior through market-based means. Through time transfer and storage of energy, the power system balance adjustment ability is improved. © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.

关键词： Electric power system control

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