Development and research on integrated protection system based on redundant information analysis

He, Jinghan; Liu, Lin; Li, Wenli; Zhang, Ming

doi:10.1186/s41601-016-0024-y

Cited by 15 publications

(5 citation statements)

References 26 publications

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“…For a profound insight into wide power-outages originating from various unsettling events, it is useful to hypothetically divide power system operation into five situations as depicted in Fig. 14(a) [42].…”

Section: Predictive Wide-area Monitoring Protection and Controlmentioning

confidence: 99%

Protection and Monitoring of DESO

Hamidi

2022

Preprint

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This chapter first accurately reviews the basics of smart microgrid protection since the definitions vary from a reference to another. Then it focuses on the fault responses of Inverter-Based Resources (IBR’s) as those are emerging technologies that will be playing the great role of interfacing primary energy resources and the grid. In particular, for materialization of net-zero Carbon emission in electricity generation, the use of IBR’s is indispensable. However, the non-universal and software-defined IBR fault responses make conventional relays such as overcurrent, directional, and distance relays inapplicable in heavily IBR-based grids. Therefore, the discrepancy between conventional and IBR fault responses is elaborated and possible solutions to the looming protection issues are discussed. The shortcomings and merits of each solution are also discussed.

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Section: Predictive Wide-area Monitoring Protection and Controlmentioning

confidence: 99%

Protection and Monitoring of DESO

Hamidi

2022

Preprint

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“…Most distributed protection and distributed optimization are inseparable from information sharing. In [27], the integrated protection is proposed to realize more reliable and sensitive fault detection by sharing information and cooperation among different protection functions.…”

Section: Information Security Requirements Of the System Operation Layermentioning

confidence: 99%

Blockchain Technology for Information Security of the Energy Internet: Fundamentals, Features, Strategy and Application

Zeng

Cao

et al. 2020

Energies

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In order to ensure the information security, most of the important information including the data of advanced metering infrastructure (AMI) in the energy internet is currently transmitted and exchanged through the intranet or the carrier communication. The former increases the cost of network construction, and the latter is susceptible to interference and attacks in the process of information dissemination. The blockchain is an emerging decentralized architecture and distributed computing paradigm. Under the premise that these nodes do not need mutual trust, the blockchain can implement trusted peer-to-peer communication for protecting the important information by adopting distributed consensus mechanisms, encryption algorithms, point-to-point transmission and smart contracts. In response to the above issues, this paper firstly analyzes the information security problems existing in the energy internet from the four perspectives of system control layer, device access, market transaction and user privacy. Then blockchain technology is introduced, and its working principles and technical characteristics are analyzed. Based on the technical characteristics, we propose the multilevel and multichain information transmission model for the weak centralization of scheduling and the decentralization of transaction. Furthermore, we discuss that the information transmission model helps solve some of the information security issues from the four perspectives of system control, device access, market transaction and user privacy. Application examples are used to illustrate the technical features that benefited from the blockchain for the information security of the energy internet.

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“…Fault line identification by comparing the current amplitude difference, which is suitable for system with small-capacity DG integration, but not applicable to system with large-capacity DG integration, is described in [35]. The authors in [36][37][38] made a combination of the startup information of protection relays in neighbouring regions to determine the fault region, with small data scale and high computation speed. However, the multi-branch structure of distribution network was not considered, thus the protection operation criterion was not universally applicable.…”

Section: Introductionmentioning

confidence: 99%

Adaptive overcurrent relay (AOCR) based on Fano Factors of current signals

Mahmoud

Malik

2023

The Journal of Engineering

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A Fano Factor-based adaptive overcurrent protection scheme, that automatically adjusts the protection settings in response to the prevailing conditions of the power system, is presented. Both phase and ground overcurrent relays are based on the same mathematical algorithm to calculate the operating time using Fano Factors (FFs) estimated for phase and ground current signals, respectively. Effectiveness of the proposed adaptive overcurrent method is validated for various fault types under a plethora of loading current levels, besides a wide range of fault inception angles and fault resistance. Simulation results confirm that the proposed algorithm can detect series and shunt faults, differentiate between grounding and phase faults, and adapt the relay operating time settings using the FF for all conditions examined. The relay algorithm speed and sensitivity are controllable using both the FF setting values and moving data window size. Moreover, it is characterized by being simple, reliable, accurate, and can be implemented practically as a base of digital protective relay for use in substation automation systems and phasor measurement units.

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Development and research on integrated protection system based on redundant information analysis

Cited by 15 publications

References 26 publications

Protection and Monitoring of DESO

Protection and Monitoring of DESO

Blockchain Technology for Information Security of the Energy Internet: Fundamentals, Features, Strategy and Application

Adaptive overcurrent relay (AOCR) based on Fano Factors of current signals

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