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检索条件"机构=State Key Laboratory of Smart Power Grid Protection and Control"

共 531 条记录，以下是31-40 订阅

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Marginal Unit Location Method Based on Dual Simplex Sensitivity Analysis 1

引用

7th Purple Mountain Forum on smart grid protection and control, PMF2022

作者： Zhang, Yantao Chang, Li Cao, Rongzhang Wang, Wen Zang, Zhendong Wu, Shuomin Jiangsu Nanjing211106 China State Key Laboratory of Smart Grid Protection and Control Jiangsu Nanjing211106 China

ISBN: (数字)9789819900633

ISBN: (纸本)9789819900626

With the continuous settlement and trial operation in the domestic power spot market, the price volatility analysis scenarios of the LMP widely used by power spot pilot provinces have gradually increased, and the real-time nature has gradually increased. Since LMP is affected by many factors, and different factors are coupled with each other, it is impossible to quickly and accurately analyze the reasons for node price fluctuations and pricing units. Therefore, combined with the domestic spot market clearing and pricing two-stage optimization strategy and the mature dual simplex theory, a marginal unit location method based on dual simplex sensitivity analysis is proposed. The method supports different scenarios such as unit independent pricing, unit, and constraint slack variable joint pricing, etc. The rationality of the positioning method is verified by the PJM 5 node and practical example. The results show that the method is universal and has been applied to several spot pilots. © state grid Electric power Research Institute 2023.

关键词： Sensitivity analysis

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Research and Application of Data on Demand Penetration Retrieval Based on DL/T860CMS Standard 8

Research and Application of Data on Demand Penetration Retri...

引用

8th International Conference on Energy System, Electricity, and power, ESEP 2023

作者： Zeng, Jincheng Tan, Zhijun He, Mingyi Tian, Hui Gong, Shaoqi Wu, Yongyi Nari Group Corporation State Grid Electric Power Research Institute Nanjing211106 China Nari Technology Co. Ltd. Nanjing211106 China State Key Laboratory of Smart Grid Protection and Control Nanjing211106 China

ISBN: (数字)9781510679801

ISBN: (纸本)9781510679795

To address the continuous growth of equipment scale and the number of measurement points in autonomous and controllable intelligent substations, while existing data collection strategies, equipment modeling methods, and data transmission dimensions cannot meet the requirements of panoramic monitoring and deep data mining analysis for the new-generation of substation centralized monitoring system, this paper proposes a data penetration and retrieval method based on DL/T860 CMS standard. This article introduces the background and technical advantages of the DL/T860 CMS standard, as well as the overall process of on-demand access. It also designs the overall architecture, and discusses in detail the key technologies involved in file access, dynamic dataset access, and remote process *** application results of on-site operation of multiple centralized control systems in Jiangsu, Shandong, Anhui, and other provinces show that on-demand penetration and retrieval services provide reliable technical support for centralized monitoring of substations, effectively improving the monitoring level of the centralized control system regarding the primary and auxiliary equipment of the substation. © 2024 SPIE.

关键词： Data mining

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control Strategies for the PV-Integrated Islanded Microgrid Under Normal and Fault Conditions 8th

Control Strategies for the PV-Integrated Islanded Microgrid ...

引用

8th Purple Mountain Forum on smart grid protection and control, PMF 2023

作者： Zheng, Yuping Yao, Shenyun Wu, Tonghua Wu, Hai Zheng, Xiaojiang Xia, Lei The State Key Laboratory of Smart Grid Protection and Control NARI Group Corporation Nanjing China The College of Energy and Electrical Engineering Hohai University Nanjing China

ISBN: (纸本)9789819992508

This paper describes the corresponding control strategies for the normal and fault operation states of the islanded microgrid system. The islanded microgrid system consists of distributed energy resources (DER) such as photovoltaic (PV), hybrid energy storage (HES) and microturbine (MT) and loads such as pumping unit load (PUL) and equivalent load. In the normal condition, it adopts a voltage and frequency (V-f) control strategy for the inverter of MT to maintain constant voltage and frequency of the whole system and a constant power control strategy for the rest of the power inverters. In the fault condition, the front and rear stages of the PV system adopt constant power control and reactive power compensation priority control respectively, thus realizing low voltage ride-through (LVRT). The proposed control strategies can ensure the stability of voltage and frequency of the microgrid during normal conditions and the ability of the PV system to achieve LVRT during fault conditions. A simulation model of the islanded microgrid system based on PSCAD/EMTDC is constructed and the effectiveness of the control strategies under normal and fault conditions is verified. © 2024, state grid Electric power.

关键词： Reactive power

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A Line protection Method Based on Dual Terminal Dynamic System Impedance 9th

A Line Protection Method Based on Dual Terminal Dynamic Syst...

引用

9th Purple Mountain Form on smart grid protection and control, PMF 2024

作者： Yu, Hong Wu, Chenke Zhang, Yichi Wu, Tonghua Dai, Wei Li, Hongxia Yang, Libin State Key Laboratory of Smart Grid Protection and Control Nanjing211106 China NARI Group Corporation Nanjing211106 China College of Energy and Electrical Engineering Hohai University Nanjing210098 China State Grid Qinghai Electric Power Company Xining810000 China

ISBN: (纸本)9789819616701

Affected by its control strategy, the output characteristics and fault characteristics of the inverter-interfaced distributed generations (IIDG) are different from those of synchro during the fault period, and the differential protection criteria applied to transmission lines cannot be directly transplanted into the distribution network. To solve the above problems, the fault characteristics of the inverter power supply are analyzed through the control strategy during the fault period, and a method to improve the sensitivity of line protection based on two-terminal dynamic impedance is proposed. The method uses the virtual part of the impedance of the two-end system and the line to construct the criterion, which avoids the influence of the traditional longitudinal differential protection on the current amplitude and phase relationship at both ends. Finally, PSCAD simulation software is used to build a 10 kV active distribution network model. The simulation results show that compared with the traditional current longitudinal differential protection, the proposed method has the advantages of high sensitivity, reliability, and strong resistance to transition resistance. © state grid Electric power 2025.

关键词： Relay protection

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Research on Coordination Strategy of Emergency and Correction control under High Proportion of New Energy Connected to power grid 6

Research on Coordination Strategy of Emergency and Correctio...

引用

6th IEEE Conference on Energy Internet and Energy System Integration, EI2 2022

作者： Liu, Fusuo Huang, Hui Chang, Haijun Wu, Xuelian Wang, Chao NARI Group Corporation/State Grid Electric Power Research Institute State Key Laboratory of Smart Grid Protection and Control Nanjin China

ISBN: (纸本)9798350347159

With the large-scale access of new energy sources, the operation mode and the uncertainty factors of the power grid increase, meanwhile the short-term power shock has an increasing impact, which exacerbates the complexity of the system frequency response characteristics and the difference in space-time distribution. Based on the analysis of principles and adaptability of emergency control and correction control, this paper comprehensively considers the operation mode and new energy access, and proposes a centralized control decision-making method based on model and trajectory driving from the perspective of global frequency control. The method also considers the continuously adjustable control resources and low voltage ride through of new energy. Finally, the practicality of the proposed method is verified based on the actual power grid simulation. © 2022 IEEE.

关键词： Decision making

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Attack-Aware Capability Assessment Method Based on Specific Semantic Search 6

Attack-Aware Capability Assessment Method Based on Specific ...

引用

6th International Conference on Electronic Engineering and Informatics, EEI 2024

作者： Zhang, Daojuan Zhao, Qi Wang, Yuman Li, Shu Tian, Zheng Sun, Yizhen State Grid Smart Grid Research Institute co. Ltd State Grid Laboratory of Power Cyber-Security Protection and Monitoring Technology Beijing China State Grid information & Communication Company of Hunan Electric Power Corporation Hunan Provincial Key Laboratory of Internet of Things in Electricity Hunan Changsha China

ISBN: (纸本)9798350353594

In this paper, we propose an attack perception capability assessment method based on the specific semantic search for the problem of attack perception capability assessment of security protection equipment for power monitoring systems. The method aims to improve the recognition and localization accuracy of common attacks by accurately correlating the output products of security equipment with the execution of attack test cases. The research employs an attack-specific semantic generation technique that combines attack attribute values with timestamps to form specific semantics for subsequent matching. Pattern matching algorithm, specifically the BM (Boyer-Moore) algorithm, is further utilized to match the specific semantics with the output products of the security device Snort to achieve attack localization. Experimental results demonstrate that Snort exhibits high accuracy in perceiving the majority of attack types and exhibits an enhanced perception rate compared to certain baseline methods. In summary, the method proposed in this paper effectively improves the sensing ability of security equipment to attacks on the power monitoring system and provides a new idea for the performance evaluation of security protection equipment. © 2024 IEEE.

关键词： attack awareness pattern matching power monitoring system specific semantics

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The Risk of Cyber Security for power Stability control System and Its Test Platform 4

The Risk of Cyber Security for Power Stability Control Syste...

引用

4th IEEE International Conference on power, Intelligent Computing and Systems, ICPICS 2022

作者： Tong, Heqin Xu, Jianbing Zhang, Liquan Liang, Shizhe Mai, Cheng Ding, Weidong Hu, Kunxuan State Grid Electric Power Research Institute State Key Laboratory of Smart Grid Protection and Control Nanjing China State Grid Electric Power Research Institute Nanjing China

ISBN: (数字)9781665467735

ISBN: (纸本)9781665467735

With the development of the smart grid and cross-regional power stability control technology, communication system and the infrastructure of power system combines together to become a coupled system. Thus, the cyber-attack on the communication and information system may cause serious threat on the power system. So, in this paper, a cyber-security test platform for the power stability control system is proposed and built. By this test platform, the cyber security can be tested and analyzed, and the ability to resist cyber-attacks can be evaluated. In this paper, the structure of communication network for the power stability control system and its cyber security risk is analyzed;then, the cyber security test platform for the power stability control system is proposed, and the structure, test items and the implementation scheme of the test platform is provided;finally, we use an operating typical power stability control system as the test case to evaluate the applicability of the test platform and provide some advantages of this platform. © 2022 IEEE.

关键词： Cyber attacks

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Low-Code Penetration Testing Payload Generation Tool Based on Msfvenom 3

Low-Code Penetration Testing Payload Generation Tool Based o...

引用

3rd International Conference on Advanced Manufacturing Technology and Electronic Information, AMTEI 2023

作者： Li, Shu Tian, Zheng Sun, Yizhen Zhu, Hongyu Zhang, Daojuan Wang, Huiwen Wu, Qitian Hunan Provincial Key Laboratory of Internet of Things in Electricity State Grid Information & Communication Company of Hunan Electric Power Corporation Hunan Changsha China State Grid Laboratory of Power Cyber-Security Protection and Monitoring Technology State Grid Smart Grid Research Institute Co. Ltd. Beijing China

ISBN: (纸本)9781510674806

This article proposes a penetration testing payload generation tool based on the Qt graphical interface and msfvenom. The aim is to provide a user-friendly graphical interface that enables penetration testing professionals to efficiently generate customized penetration testing payloads. By integrating the msfvenom payload generation script, users can customize different payload types and parameter settings through the visual interface. While improving the efficiency of payload generation, the tool emphasizes enhancing the user experience to adapt and meet the evolving needs of penetration testing. © 2024 SPIE.

关键词： Human-machine interfaces Information security Photonic integrated circuits Process modeling Tunable filters Computer security Connectors Instrument modeling Pipes Windows

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Comparison of Adaptive Virtual Impedance Coefficient to Suppress power Oscillation in Multi-VSG grids 16

Comparison of Adaptive Virtual Impedance Coefficient to Supp...

引用

16th IEEE PES Asia-Pacific power and Energy Engineering Conference, APPEEC 2024

作者： Ji, Jie Li, Xingshuo Ding, Shuye Chen, Yizhi School of Electrical and Automation Engineering Nanjing Normal University Nanjing China Nari Group Corporation State Key Laboratory of Smart Grid Protection and Control Nanjing China

ISBN: (纸本)9798350386127

The virtual synchronous generator(VSG) technology offers inertia support but also introduces active power oscillation, which are more serious when in multi-VSG. The previous studies proposed adaptive virtual impedance aimed at suppressing power oscillation in multi-VSG system. However, further research is still needed to thoroughly examine the adaptive virtual impedance coefficient. In this article, how the power oscillation of multi-VSG to be influenced by adaptive virtual impedance coefficient is investigated. Firstly, an analysis is conducted on the active power oscillation mechanism. Subsequently, the variation law of adaptive virtual impedance coefficient affecting active power oscillation is studied. Finally, The effects of different adaptive virtual impedance coefficient values is compared in simulations and experiment. © 2024 IEEE.

关键词： Synchronous generators

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Remote closed-loop test method of safety and stability control system based on step-by-step implementation 2

Remote closed-loop test method of safety and stability contr...

引用

2nd International Conference on Digital Society and Intelligent Systems, DSInS 2022

作者： Zhao, Wei Hou, Yuqiang Chen, Xiong Xue, Feng Chen, Wei Chen, Luofei Nanjing211106 China State Key Laboratory of Smart Grid Protection and Control Nanjing211106 China PONOVO Power Co. Ltd. Beijing100000 China

ISBN: (纸本)9781510663244

The safe operation of the safety stability control system is an important means to ensure the safe and stable operation of AC and DC power grids. Aiming at the shortage of existing test methods that cannot perform closed-loop testing of field safety stability control systems, a remote closed-loop test method for safety stability control systems based on step-by-step implementation is proposed. Using the simulation results of real-time digital simulation system (RTDS) as the signal source, a remote test platform architecture integrating laboratory and field safety and stability control devices is designed, key modules such as platform management system, test master and test terminal are developed, specific solutions are given for platform communication, and a remote closed-loop test procedure is formulated. Finally, a pilot application is carried out with an actual power grid security and stability control system as an example, and the effectiveness of the proposed method is verified. © 2023 SPIE.

关键词： Real time systems

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