Fault detection and diagnosis of monopolar configured VSC based high voltage direct current transmission line

Khairnar, Sagar K.; Hadpe, Somnath. S.; Shriwastava, Rakesh G.; Khule, Shridhar

doi:10.1016/j.gltp.2022.04.010

Cited by 7 publications

(4 citation statements)

References 9 publications

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“…The filtered voltage signal is detected by the wavelet transform mode maximum method [13]. The steps are as follows:…”

Section: Ac Substation Output Voltage Fault Detectionmentioning

confidence: 99%

Research on the accurate fault location of AC substations based on switching action logic

Xiao,

Meng,

Zou

et al. 2023

J. Phys.: Conf. Ser.

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AC substation systems contain multiple devices and components, which affect each other, resulting in increased system complexity and difficulty in locating power faults. However, the complexity of the system increases the difficulty of analysis and judgment, and puts forward higher requirements for the accuracy of algorithms and logic. Therefore, an accurate fault location method for AC substations based on switching action logic is proposed. Taking the YnD11 connection mode as an example, the operation model of the phase selection switch of the isolation switch is constructed, and the operation logic of the phase selection switch of the isolation switch is obtained. The phase amplitude and phase relationship of the three-phase isolation switch are analysed, and the appropriate switching strategy is selected to reduce the influence of electromagnetic coupling. Based on this, the time-frequency and frequency-domain information of the power signal is obtained by the wavelet decomposition method, and the local characteristic value of voltage signal is quantified. The fault location of the filtered the voltage signal is completed by the wavelet transform mode maximum method. The experimental results show that the no-load current has good linearity and almost no harmonics, and the results of the disturbance location are closer to the actual situation.

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“…The filtered voltage signal is detected by the wavelet transform mode maximum method [13]. The steps are as follows:…”

Section: Ac Substation Output Voltage Fault Detectionmentioning

confidence: 99%

Research on the accurate fault location of AC substations based on switching action logic

Xiao,

Meng,

Zou

et al. 2023

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

show abstract

“…In order to achieve effective monitoring of high-voltage transmission lines, this paper combines the wireless self-organizing network MAC protocol to design the monitoring routing algorithm. The routing parameters are processed by constructing reward functions and solved by combining with deep reinforcement algorithms, and the specific implementation process is as follows [5] .…”

Section: Design Of Routing Algorithm For Monitoring High-voltage Tran...mentioning

confidence: 99%

Research on the design of high-voltage transmission line monitoring based on self-grouping MAC access

Ma,

Jia,

Liu

et al. 2023

Third International Conference on Signal Image Processing and Communication (ICSIPC 2023)

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The current conventional high-voltage transmission line monitoring method mainly obtains line parameters through fiber optic sensing equipment, and analyzes the parameters to grasp the actual load situation of the line, which leads to poor monitoring effect due to the lack of design of load flow threshold. In this regard, a monitoring method for high-voltage transmission lines based on self-assembled MAC access is proposed. By constructing the reward function, the routing monitoring algorithm is designed and the image monitoring module structure is designed. Combined with the heat balance equation, the line load flow value is calculated and the judgment of the line load condition is realized by setting the flow threshold. In the experiments, the monitoring performance of the proposed method is verified. The experimental results show that when the proposed method is used for transmission line monitoring, the system data loss rate is low and has a more desirable monitoring effect.

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“…[4][5][6], high-voltage transmission lines are prone to overload problems, resulting in heating defects, which will not only cause abnormal operation of transmission lines, but also may cause large-scale safety accidents. If the intelligent device can effectively identify and repair the heating defects of high-voltage transmission lines, it will greatly reduce the risk of overheating accidents [7][8][9][10] and the maintenance cost of high-voltage transmission lines. The research shows that in recent years, transmission and distribution accidents caused by heating defects of high-voltage transmission lines occur frequently, and the comprehensive loss is far more than 10000 yuan.…”

Section: Introductionmentioning

confidence: 99%

Research on automatic maintenance method of flexible maintenance robot for heating defects of high voltage transmission lines

Hai

Chen

et al. 2023

Second International Conference on Advanced Manufacturing Technology and Manufacturing Systems (ICAMTMS 2023)

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The conventional automatic maintenance method for heating defects of high voltage transmission lines mainly uses the aggregate spatiotemporal correlation analysis method to obtain the location characteristics of heating defects, which is vulnerable to the change of defect attributes, leading to the high deviation of automatic maintenance positioning distance. Therefore, it is necessary to design a new automatic maintenance method for heating defects of high voltage transmission lines using flexible maintenance robots. That is to say, a flexible robot maintenance platform for thermal defects of highvoltage transmission lines is constructed, which compensates the positioning error of the automatic maintenance of thermal defects of the flexible maintenance robot, optimizes the movement state of the joint of the automatic maintenance arm for thermal defects of the flexible maintenance robot, and thus realizes the automatic maintenance of thermal defects of high-voltage transmission lines. The experimental results show that under the same maintenance environment, the automatic maintenance positioning distance of the automatic maintenance method for heating defects of high-voltage transmission lines based on the flexible maintenance robot designed in this paper is consistent with the actual distance for heating defects, and there is no automatic maintenance positioning deviation, which proves that the designed automatic maintenance method has good maintenance effect, reliability, and certain application value. It has made a certain contribution to improving the operation reliability of high-voltage transmission lines.

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Fault detection and diagnosis of monopolar configured VSC based high voltage direct current transmission line

Cited by 7 publications

References 9 publications

Research on the accurate fault location of AC substations based on switching action logic

Research on the accurate fault location of AC substations based on switching action logic

Research on the design of high-voltage transmission line monitoring based on self-grouping MAC access

Research on automatic maintenance method of flexible maintenance robot for heating defects of high voltage transmission lines

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