Experimental research on minimum approach distances and complex gaps for live working in substation

Xiao, Bin; Li, Kai; Wu, Tian; Liu, Ting; Peng, Yong; Lei, Xinglie; Su, Ziming; Tang, Pan

doi:10.1109/drpt.2015.7432497

Cited by 2 publications

(3 citation statements)

References 3 publications

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“…In the first stage of the game, defense resources are allocated to CEs. Among them, certain defense resources are allocated to CEs (6,4), (4,6), (7,6), (6,7), (9,7), (7,9), (13,15), (15,13), (14,7), (7,14), (14,15), (15,14), (16,8), (8,16), (16,17), (17,16), (17,20), (20,17), (18,19), (19,18), (19,20), and (20,19). The failure probabilities p ij during attack are 0.769, 0.769, 0.769, 0.769, 0.769, 0.833, 0.833, 0.833, 0.833, 0.472, 0.472, 0.833, 0.833, 0.714, 0.714, 0.769, 0.769, 0.909, 0.909, 0.625, 0.625, 0.556, and 0.556, respectively.…”

Section: Simulation Experiments On the Three-stage Process Of Cpps At...mentioning

confidence: 99%

“…To ensure the safe and stable operation of the power communication network, it is necessary to carry out maintenance on communication equipment [17,18]. During the maintenance process that does not meet the distance requirements for live working, maintenance personnel need to cut off the power supply of the optical cable in order to refurbish some equipment on the tower [19,20], resulting in the optical cable not working properly. Therefore, the impact of communication equipment maintenance on the communication network can be regarded as a source of faults and a controllable factor.…”

Section: Introductionmentioning

confidence: 99%

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Defense and Attack Game Strategies of Dual-Network Coupled CPPS with Communication Edge Failures

Zhu

Xiao

et al. 2023

Electronics

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With the development of power technology and communication technology, the power grid and power communication network have become interdependent and closely coupled. The load shedding operation of the power grid is an important means to reduce the occurrence of chain faults and ensure the safe and stable operation of the power grid. Based on the transmission of load control services in the communication network, this paper establishes a model for a dual-network coupled cyber physical power system (CPPS). Considering communication edge faults, the associated load capacity of the communication edge and the expected load loss of the power grid are defined. On this basis, the paper proposes a complete information zero-sum game mechanism called “defense attack defense” for communication edge failures, which takes the expected loss of load from the power grid as the benefit. The paper studies the optimal attack and defense game strategies and provides the algorithm implementation process for the three stages of the game. Considering the bandwidth capacity of the communication edge, this paper uses the Dijkstra algorithm or k shortest paths (KSP) algorithm with the cost factor of the communication edge as the weight to plan the main and backup communication channels for multiple load control services. The simulation results show that the game mechanism proposed in this paper can effectively reduce the expected load loss from the power grid and improve the stability of the CPPS.

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Section: Simulation Experiments On the Three-stage Process Of Cpps At...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Defense and Attack Game Strategies of Dual-Network Coupled CPPS with Communication Edge Failures

Zhu

Xiao

et al. 2023

Electronics

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“…However, live working technology in substations is less mature compared to that in transmission lines. Previous work on substation's live working mainly focused on the minimum approach distance (MAD) and work procedures, and most of the work was conducted for voltage levels below 500 kV . Until now, research pertaining to live working in a 1000‐kV substation has not been reported.…”

Section: Introductionmentioning

confidence: 99%

1000‐kV UHV substation live working and safety recommendations

Fang

Rehman

Xiao³

et al. 2018

IEEJ Transactions Elec Engng

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This work focuses on the measurement and analysis of the electric field for live working in a 1000‐kV substation. Also, it compares the electric field and the shielding efficiency requirement of a 1000‐kV substation with 1000‐kV transmission lines. The electric field at the ground potential of the substation was measured using a microelectromechanical system (MEMS)‐based device. However, for safety reasons and to acquire rigorous data, finite element method (FEM) was applied to calculate the electric field at equipotential. Two cases of entry into equipotential were considered: one in which the worker moves along tension insulators to live conductors, and another where the worker is lifted to an energized bus bar on an insulated elevating platform. Our results indicate that the electric field values on the worker in the 1000‐kV substation and transmission lines are about the same at ground potential, while at equipotential, the substation's maximum electric field is 25.2% higher outside the conductive clothing and 47.4% higher outside the metallic mask as compared to the 1000‐kV transmission lines. Based on these results, for live working in a 1000‐kV substation, we recommend the use of conductive clothing with 60‐dB shielding efficiency, which is similar to that used in live working on a 1000‐kV transmission line, but the metallic mask should have 25‐dB shielding efficiency, which is 5 dB higher than that used for the transmission line. © 2018 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.

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Experimental research on minimum approach distances and complex gaps for live working in substation

Cited by 2 publications

References 3 publications

Defense and Attack Game Strategies of Dual-Network Coupled CPPS with Communication Edge Failures

Defense and Attack Game Strategies of Dual-Network Coupled CPPS with Communication Edge Failures

1000‐kV UHV substation live working and safety recommendations

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