Analysis of wiring design for 380-VDC power distribution system at telecommunication sites

A novel distributed secondary layer control strategy based on average consensus and fractional-order proportional-integral (FOPI) local controllers is proposed for the regulation of the bus voltages and energy level balancing of the energy storage systems (ESSs) in DC microgrids. The distributed consensus protocol works based on an undirected sparse communication network. Fractional-order local controllers increase the degree of freedom in the tuning of closed-loop controllers, which is required for DC microgrids with high order dynamics. Therefore, here, FOPI local controllers are proposed for enhanced energy balancing of ESSs and improved regulation of the bus voltages across the microgrid. The proposed control strategy operates in both islanded and grid-connected modes of a DC microgrid. In both modes, the average voltage of the microgrid converges to the microgrid desired reference voltage. The charging/discharging of ESSs is controlled independent of the microgrid operating mode to maintain a balanced energy level. The performance of the proposed distributed control strategy is validated in a 38-V DC microgrid case study, simulated by Simulink real-time desktop, consisting of 10 buses and a photovoltaic renewable energy source.This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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“…A first‐order linear model is also used for the energy level dynamics of the batteries [42].

{\overset{e}{true}}_{i} = - \frac{v_{i} t_{i}}{e_{i}^{m a x}}

where

e_{i}^{\max}

is the highest capacity of the i ‐th ES system.…”

Section: Distributed Control Strategymentioning

confidence: 99%

Distributed control strategy for DC microgrids based on average consensus and fractional‐order local controllers

et al. 2021

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“…Bus 1 also includes 500 m 2 PV generation operated with the MPPT algorithm, rated for 80 kW. Based on the analysis of conventional wiring configurations of the DC microgrids shown in [53] for data centers, 50m×24mm cables are selected to connect the load buses to bus 1. The buses 1 to 7 have 25 kWh lithium-ion batteries, while the buses 8 to 10 ES systems have 12.5 kWh lithium-ion batteries.…”

Section: A DC Microgrid Configurationmentioning

confidence: 99%

A Distributed Event-Triggered Control Strategy for DC Microgrids Based on Publish-Subscribe Model Over Industrial Wireless Sensor Networks

Alavi

Mehran

Hao

et al. 2019

IEEE Trans. Smart Grid

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This paper presents a complete design, analysis, and performance evaluation of a novel distributed event-triggered control and estimation strategy for DC microgrids. The primary objective of this work is to efficiently stabilize the grid voltage, and to further balance the energy level of the energy storage (ES) systems. The locally-installed distributed controllers are utilised to reduce the number of transmitted packets and battery usage of the installed sensors, based on a proposed event-triggered communication scheme. Also, to reduce the network traffic, an optimal observer is employed which utilizes a modified Kalman consensus filter (KCF) to estimate the state of the DC microgrid via the distributed sensors. Furthermore, in order to effectively provide an intelligent data exchange mechanism for the proposed event-triggered controller, the publish-subscribe communication model is employed to setup a distributed control infrastructure in industrial wireless sensor networks (WSNs). The performance of the proposed control and estimation strategy is validated via the simulations of a DC microgrid composed of renewable energy sources (RESs). The results confirm the appropriateness of the implemented strategy for the optimal utilization of the advanced industrial network architectures in the smart grids.

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“…It is found that the load current is inversely proportion to the voltage at the load. Voltage of the +380V DC system is seven times higher than operational voltage of +54V DC (nominal +48V DC system), therefore, the current of the +380V DC system at the same load is reduced to one-seventh times of the original current [6].…”

Section: Advantage Of the +380v DC Power Distribution System Ovementioning

confidence: 99%

A Review of the Power Distribution System in the Telecommunications Sector

Gogoi¹

2018

IJASRE

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The telecommunications sector consumes a significant amount of power from the electric utility grid for its functioning. In a typical telecommunications center, about half the energy consumed is delivered to the load, with the rest is lost in power conversion, distribution and cooling processes. Higher voltage DC is, thus being proposed as an energy efficient distribution option.This paper takes a look at the -48 V power distribution widely used for providing power to telecommunication equipment, and at the methodology used for grounding and bonding of both the power system and the powered telecommunication system. An analysis of the benefits of the +380V DC power distribution system compared to the current -48V DC power supply system in telecommunications sector is also presented. High-frequency AC (HFAC) power distribution systems have also been the subject of great interest. This paper also presents a review of the different HFAC power distribution architectures and is focused on the HFAC power architectures and topologies for the telecommunications system. This paper also presents the concept of green telecommunication networks and provides

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Analysis of wiring design for 380-VDC power distribution system at telecommunication sites

Cited by 12 publications

References 7 publications

Distributed control strategy for DC microgrids based on average consensus and fractional‐order local controllers

Distributed control strategy for DC microgrids based on average consensus and fractional‐order local controllers

A Distributed Event-Triggered Control Strategy for DC Microgrids Based on Publish-Subscribe Model Over Industrial Wireless Sensor Networks

A Review of the Power Distribution System in the Telecommunications Sector

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