Optimal communication frequency for switching cabled ocean networks with commands carried over the power line

Chen, Yanhu; Zang, Yujia; Yao, Jinzhong; Muhammad, Gul

doi:10.1631/fitee.1900125

Cited by 5 publications

(4 citation statements)

References 23 publications

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“…LPMs are employed when nonlinear loads, faults, or Corona effect must be considered, or when transmission line parameters must be estimated (used as an equivalent π-circuit) in the time-domain transient analysis [5,14]. However, the accuracy from LPMs is restricted to TLs within a few tens of kilometers submitted to low-frequency disturbances [15]. When switching maneuvers (energization) are involved, the TL can be considered as composed of frequency-independent parameters and the LPM constitutes a reasonable approach [2,4,8].…”

Section: Traditional Lumped Parameter Modelmentioning

confidence: 99%

“…At t = 33.33 ms, a fault occurs at phase 1, as depicted in Figure13b.In both scenarios, the transient voltages V m (t) are computed by the traditional LPM and modified topologies T 1 , T 2 with the best adjustable factors K * d and K * s and compared with BM. In Scenario 4, the 50-km three-phase TL is decoupled in three single-phase lines represented by k = 2π/km where the adjustable factors are K * d = 0.929 and K * s = 1.375, based on(15). In Scenario 5, the 80-km three-phase TL is decoupled in three singlephase lines represented by k = 1π/km where the adjustable factors are K * d = 1.51 and K * s = 1.236.…”

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confidence: 99%

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Optimization of Lumped Parameter Models to Mitigate Numerical Oscillations in the Transient Responses of Short Transmission Lines

et al. 2021

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The Lumped Parameter Model (LPM) is a known approach to represent overhead transmission lines (TLs), especially when these elements comprehend a few tens of kilometers. LPMs employ a large number of cascaded π-circuits to compute accurately the transient responses. These responses contain numerical spurious oscillations (NSO) characterized by erroneous peaks which distort the transient responses, mainly their peak values. Two modified LPM topologies composed of damping resistances inserted along the longitudinal or transversal branches of the cascaded π-circuits offer significant mitigations in the NSO. In this paper, in an effort to have the maximum mitigation of the NSO and low distortion in the transient responses, two modified topologies with optimized damping resistances are proposed to represent short TLs. Results demonstrate expressive attenuation in the peaks of NSO which reflect good agreement in comparison with the responses computed by the Bergeron’s line model. The mitigation of the NSO is carried out directly in the time domain and it does not require either analog or digital filters.Furthermore, no frequency-to-time transformations are necessary in this procedure. These alternative topologies can be incorporated into any electromagnetic transient program to study switching operations in power systems.

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Section: Traditional Lumped Parameter Modelmentioning

confidence: 99%

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confidence: 99%

Optimization of Lumped Parameter Models to Mitigate Numerical Oscillations in the Transient Responses of Short Transmission Lines

et al. 2021

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“…Figure 1 is the structure diagram of electronic communication system. The application of internet of things in communication technology is gradually mature, which greatly facilitates people's life and accelerates the mutual communication between people [15]. These gadgets comprise electronics, software, a network, and sensors to enhance communication.…”

Section: Introductionmentioning

confidence: 99%

Artificial intelligence technology in electronic communication engineering for medical applications

Lin

Zhang

Jagota³

et al. 2022

The Journal of Engineering

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In order to solve the problem of high frame error rate in electronic communication engineering, the application of artificial intelligence technology in electronic communication engineering is proposed. Taking LPWAN technology in artificial intelligence technology as an example, a new architecture is proposed to improve the security of wireless communication system of internet of things. The architecture is mainly composed of business layer, data processing layer, terminal access layer and communication technology layer. The experimental results show that the system configuration sends four kinds of information transmission instructions of “temperature, light, air pressure and humidity” every 30 s, and the receiving port collects the above command data continuously for 4 h, compared with the traditional architecture (15.6%), and the packet loss rate is 4%, which can effectively improve the throughput and processing efficiency of the system. The designed architecture runs stably, has low bit error rate, and can better support the wireless communication. It is proved that the new architecture with LPWAN technology as an example has large overall capacity and excellent performance of its electronic communication engineering interface. The frame number error rate is greatly reduced and the result of signal frame number is more accurate.

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“…In steady-state, the input voltages of two modules are theoretically the same and equal to half of the feeding source. When one module is simply bypassed (i.e., K is closed), due to the presence of parasitic capacitance of the long cable [28], assuming C >> C 0 or C 1 , energy stored in C quickly charges the un-bypassed module and induces large voltage transient on its input side (i.e., voltage of C 0 as shown in Figure 2b), that may cause permanent damage to the system. Although the actual situation is often much more complicated than this simple model.…”

Section: Introductionmentioning

confidence: 99%

Reconfigurable Power Converter for Constant Current Underwater Observatory

et al. 2020

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A constant current (CC) underwater observatory employing the shunt method to provide constant voltage (CV) power for external loads is favored in occasions where shunt-fault tolerance is required. However, low efficiency of CC to CV conversion with the shunt method limits its application, especially in scenarios of varying loads. In this paper, a highly reliable and stable CC/CV converter with better efficiency is introduced based on the proposed novel active soft bypass (ASB) technology and the proposed novel priority-based power management strategy (PPMS). The ASB technology is a method that employs switches and a special control sequence which greatly depresses the large voltage transient presenting on the input side when trying hard bypass redundant modules, and the PPMS makes the system easy to monitor and ensures the absolute reliability of ASB technology. The theoretical study of this novel reconfigurable CC/CV converter and validation experiments on a prototype are carried out, with results showing great improvement in the performance. In addition, the proposed reconfigurable power converter is applied to a coastal observatory in the East China Sea.

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Optimal communication frequency for switching cabled ocean networks with commands carried over the power line

Cited by 5 publications

References 23 publications

Optimization of Lumped Parameter Models to Mitigate Numerical Oscillations in the Transient Responses of Short Transmission Lines

Optimization of Lumped Parameter Models to Mitigate Numerical Oscillations in the Transient Responses of Short Transmission Lines

Artificial intelligence technology in electronic communication engineering for medical applications

Reconfigurable Power Converter for Constant Current Underwater Observatory

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