Coupling Characteristics of Electromagnetic Disturbance of On-Site Electronic Device Power Port in Substations and Its Suppression

Ge, Siqiao; Liu, Weidong; Li, Xing; Ding, Dengwei

doi:10.1109/temc.2021.3064154

Cited by 6 publications

(3 citation statements)

References 29 publications

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“…Offshore wind energy has become an important development direction of wind power, because of its abundant resources, and stable wind [1] . However, to ensure reliable and stable power flow in wind power plants (WPPs), many power electronic devices are usually installed in wind turbine generators (WTGs), resulting in abundant harmonics in the offshore WPPs, which seriously reduces the power quality [2][3] . Additionally, some offshore WPPs are integrated into the power system by AC submarine cables.…”

Section: Introductionmentioning

confidence: 99%

Analysis of harmonic resonance amplification caused by AC submarine cable integration of offshore wind farm

Zheng

Yang

et al. 2023

J. Phys.: Conf. Ser.

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Offshore wind power plants (WPPs) using AC submarine cables connected to the power grid may experience harmonic resonance and harmonic amplification that are not common in onshore wind farms under the action of the distributed capacitance of submarine cables, which seriously threatens the safe and reliable operation of offshore WPPs. To investigate the influencing factors of harmonic amplification in offshore WPPs, a scalable state space-based modeling method for large-scale offshore WPPs were established. Moreover, the root locus method was used to study how the factors including that grid short-circuit capacities, cable parameters and the number of wind turbine generators (WTGs) affect the resonance modes. Finally, an offshore WPP in Jiangsu was built on the MATLAB/Simulink simulation platform, and the analysis results verify the correctness of the theoretical analysis.

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Section: Introductionmentioning

confidence: 99%

Analysis of harmonic resonance amplification caused by AC submarine cable integration of offshore wind farm

Zheng

Yang

et al. 2023

J. Phys.: Conf. Ser.

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“…The mechanism, characteristics and methods whereby electromagnetic interference coupling caused by the power supply port of on-site electronic devices were suppressed in Ref. [15]. Existing studies mainly focus on the electromagnetic transient process of a single device, and the integrated electromagnetic disturbance simulation model from disturbance source to intelligent component is not established, which makes the analysis of the electromagnetic disturbance conduction process incomplete.…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic disturbance characteristic of typical high voltage switchgear interruption process in offshore wind farm based on integrated conduction model

et al. 2023

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In an offshore wind farm, a high‐voltage switchgear interruption in an offshore substation creates a high‐frequency, high‐amplitude overvoltage that can cause severe electromagnetic interference problems in the intelligent electronic device. To address this issue, mathematical models, vector fitting and finite element method were used to build an integrated electromagnetic disturbance conduction model, whose accuracy was verified by large current interruption tests. Through the simulation of a typical offshore wind farm's single‐phase grounding fault interruption process, the electromagnetic disturbance characteristics and the impact of the ground position are obtained. The results show that during the fault interruption process of phase B grounded, the dominant frequency of disturbance voltage can reach 4.34 MHz, and the amplitude can reach 1.12 kV. The ground grid has a large impact on the interference voltage, which can reach a maximum value of 2.28 kV under specific conditions. The disturbance voltage in the fault process mainly comes through the current transformer, while during the interruption process, it mainly comes through the ground grid. The authors provide a method to establish the integrated electromagnetic disturbance simulation model, which can improve the accuracy of the electromagnetic disturbance conduction process simulation of intelligent components.

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“…However, lots of equipment leads to a cluttered operation environment, which will threaten the security of field operators. Besides, various equipment comes from different manufacturers or is in charge of different entities, on-site operations may involve different maintenance by different management entities (Ge et al, 2021). When there are multiple operation site tasks, security supervisors cannot effectively obtain the working status and location of all personnel at each operation site.…”

Section: Introductionmentioning

confidence: 99%

Security Monitoring Strategy of Distribution Community Operation Site Based on Intelligent Image Processing Method

Sun

Fan

et al. 2022

Front. Energy Res.

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With the continuous development of energy infrastructure, a large number of distributed new energy, distributed energy storage, and various power electronic equipment are connected to distribution communities. The access to a large amount of equipment not only increases the workload of power operators, but also leads to a complex field operation environment, which will threaten the security of field operators. Traditional monitoring strategy for distribution community operation site relies on manual operation, which is tedious, labor-intensive, and error-prone. To solve this problem, this paper proposes a security monitoring strategy for distribution community operation sites based on an intelligent image processing method. Firstly, a power image enhancement method based on multi-filtering algorithm is proposed. The filter operators are used to smooth and denoise the image, enhance the edge and detail information, and expand the security monitoring data set of operation sites by merging the filtered images. Secondly, an object detection method for personnel and security protection tools based on the improved Faster R-CNN algorithm is proposed, and a pyramid structure is constructed to improve the detection and localization accuracy of small objects such as safety helmets and safety belts. To simplify the object detection task and the complexity of the labeling system, it is disassembled into four single tasks: operators, non-operators, safety helmets, and safety belts. Finally, the detection frame labels are fused by calculating the overlap of the object detection boxes to describe the security of the operator. Experiments show that the method proposed in this paper can effectively locate the object and accurately describe the security of the operator.

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Coupling Characteristics of Electromagnetic Disturbance of On-Site Electronic Device Power Port in Substations and Its Suppression

Cited by 6 publications

References 29 publications

Analysis of harmonic resonance amplification caused by AC submarine cable integration of offshore wind farm

Analysis of harmonic resonance amplification caused by AC submarine cable integration of offshore wind farm

Electromagnetic disturbance characteristic of typical high voltage switchgear interruption process in offshore wind farm based on integrated conduction model

Security Monitoring Strategy of Distribution Community Operation Site Based on Intelligent Image Processing Method

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