Results 21 to 30 of about 41,225 (120)

Scheme Design and Engineering Implementation of DC Grid-Connection and Accommodation of Photovoltaic Power

Zhongguo dianli, 2019
With the development of flexible DC technology, the construction of source-grid -load in distribution network is greatly enriched, and the new-type grid models become possible such as centralized photovoltaic DC grid-connection and DC power supply for ...
Zhaoxiang YANG, Hongjian LI, Lei CHEN, Xiangyu CHEN   +3 more
doaj   +1 more source

A Terminal Tube Text Detection and Recognition Method Based on Improved YOLOv7-Tiny and CRNN

IEEE Access
In the process of intelligent inspection of substation terminal line, the automatic identification of terminal coding tube is a crucial step. This study proposes a new method for text detection and recognition of terminal coding tube based on deep ...
Liao Huilian, Du Xingwei, He Luhang, Wang Shanlei, Yao Meng, Zou Hongbo   +5 more
doaj   +1 more source

An Improved AC-Link Voltage Matching Control for the Multiport Modular Multilevel DC Transformer in MVDC Applications

Energies
In this paper, an improved AC-link voltage matching control (IVM) strategy is proposed for the multiport modular multilevel DC transformer (M3DCT), which comprises a single-phase modular multilevel converter (MMC) and a series of cascaded H-bridge units.
Yong Chen, Songtao Yu, Yizhen Wang, Ruixiong Yang, Xu Cheng   +4 more
doaj   +1 more source

Dynamic Modeling and Closed-loop Control of Hybrid Grid-connected Renewable Energy System with Multi-input Multi-output Controller

Journal of Modern Power Systems and Clean Energy, 2021
In this study, a novel approach for dynamic modeling and closed-loop control of hybrid grid-connected renewable energy system with multi-input multi-output (MIMO) controller is proposed. The studied converter includes two parallel DC-DC boost converters,
Mahdi Salimi, Fereshteh Radmand, Mansour Hosseini Firouz   +2 more
doaj   +1 more source

Coordinated Control Strategy of CU-MTDC under Abnormal Conditions Considering Power Supply Security

Applied Sciences, 2021
The coastal urban multi-terminal DC (CU-MTDC) is a prospective solution for enhancing the power supply security of the coastal urban power (CUP) grid and integrating the large-scale offshore wind farm. However, the large DC disturbances may significantly
Zhuodi Wang, Kejun Li, Jun Liang, Kaiqi Sun, Jinyu Wang, Zhijie Liu   +5 more
doaj   +1 more source

Configurations and Control Strategy of a Single Stage Grid Connected PV System [PDF]

E3S Web of Conferences, 2020
In the grid-connected photovoltaic (PV) system, the array forms DC power. This generated power, a two-way grid process is called DC – DC – AC as a two-stage power conversion and, secondly, a DC-AC with a reduced circuit is called a single Stage Grid ...
Reddy K. Rajasekhara, Reddy V.Nagabhaskar, Kumar M.Vijaya, Tummala Suresh Kumar   +3 more
doaj   +1 more source

A load forecasting method for IESs using TimeVAE and transfer learning

Zhejiang dianli
In this paper， an integrated learning approach based on time variational autoencoder （TimeVAE） and transfer learning （TL） is proposed to address the accuracy degradation in integrated energy systems （IESs） load forecasting caused by insufficient ...
CHEN Zhe, ZHOU Jinhui, JIN Donghui, CHEN Jiguang, MA Hengrui, ZHANG Jiaxin, ZHU Suxun   +6 more
doaj   +1 more source

Coordinated control strategy of a DC grid with energy storage system

The Journal of Engineering, 2019
DC grid has a prospect of application in collecting and transmitting large-scale renewable energy over long distance. However, the randomness and fluctuation of the renewable power may hamper the stable operation of DC grid. Energy storage device is able
Bo Yang, Bingyu Sang, Zhihan Yang, Menbo Li, Wang Xiang, Xiaojun Lu, Liangzhong Yao, Yibin Tao   +7 more
doaj   +1 more source

Design of DC grid system for green intelligent hybrid bulk carrier

Zhongguo Jianchuan Yanjiu, 2023
ObjectiveAccording to the characteristics of the complex waterways of inland rivers, a DC grid solution based on a multi-energy parallel hybrid green intelligent bulk carrier is proposed.
Li SU
doaj   +1 more source

Control strategy for direct-drive wind power system under asymmetric grid voltage sag

Gong-kuang zidonghua, 2014
In view of problems of DC side overvoltage, grid-connected current distortion and grid-connected power fluctuation existed in grid-connected operation of direct-drive wind power system under asymmetric grid voltage sag, superconducting magnetic energy ...
DONG Ruihong, XUE Honglu, LIN Guofu, DANG Cunlu   +3 more
doaj   +1 more source