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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 3. Отображено 3.
30-06-2023 дата публикации

Distribution line lightning damage risk calculation method and system considering photovoltaic system

Номер: CN116362006A
Автор: LIANG SHENGJIE, DENG PENG, HE PING, YUAN WEI, TANG RUIZHI, CHEN JIAN, WANG YAN, WANG XUYAN, DING SIMIN, SHEN JINGREN, CHI JIACHENG, KONG LINGQING
Принадлежит:

The invention relates to the field of power distribution networks, in particular to a power distribution line lightning damage risk calculation method and system considering a photovoltaic system, and the method comprises the steps: obtaining parameters of a power distribution side and a photovoltaic side in a target region; selecting each influence factor, and obtaining each influence factor value based on the power distribution side and photovoltaic side parameters; calculating the weight of each influence factor by adopting an entropy weight method; and calculating the lightning stroke risk of the line side and the photovoltaic side based on each weight by using a TOPSIS method to obtain a risk calculation result. The problem of lightning damage risk calculation of the distribution line considering the photovoltaic system is solved, and the accuracy is high.

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Номер записи: 1
23-05-2023 дата публикации

Lightning stroke overvoltage calculation method and system considering photovoltaic and power distribution systems

Номер: CN116151012A
Автор: LIANG SHENGJIE, DENG PENG, HE PING, YUAN WEI, TANG RUIZHI, CHEN JIAN, WANG YAN, WANG XUYAN, CHEN JIANKUN, DING SIMIN, SHEN JINGREN, ZHANG YILEI
Принадлежит:

The invention relates to the field of photovoltaic power generation, in particular to a lightning stroke overvoltage calculation method and system considering photovoltaic and power distribution systems, and the method comprises the steps: determining lightning current parameters; a photovoltaic grid-connected distribution line module, a photovoltaic cell module in a photovoltaic system, a photovoltaic inverter module, a maximum power point tracking simulation module and a transformer module are established through electromagnetic transient simulation; a transient calculation model of the active power distribution network is formed based on a power distribution line module, a photovoltaic cell module, an inverter module, a maximum power point tracking simulation module and a transformer module, and transient overvoltage of a lightning stroke photovoltaic side and a power distribution line side is calculated in combination with lightning current parameters. The method is high in accuracy ...

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Номер записи: 2
05-05-2023 дата публикации

Terahertz broadband filter based on double-layer metamaterial and preparation method thereof

Номер: CN116073097A
Автор: HUANG YI, ZENG QIUMING, ZHONG SHUNCONG, ZHANG ZHENGHAO, HUANG YONGLIN, DING SIMIN, ZHANG ZHEN
Принадлежит:

The invention relates to a terahertz broadband filter based on a double-layer metamaterial and a preparation method thereof, the terahertz broadband filter comprises two layers of metamaterial structures which are stacked and compounded together, the periodic arrays of the two layers of metamaterial structures are the same, and a gap between the two layers of metamaterial structures forms a Fabry-Perot cavity. According to the metamaterial structure, a single-layer aluminum foil is used as a raw material for preparing the metamaterial, and a femtosecond laser direct writing technology is used for rapidly ablating thin film metal to prepare the through hole type terahertz flexible metamaterial with a periodic surface structure. The terahertz broadband filter is obtained by stacking and compounding two layers of metamaterials which have the same periodic array and are made by femtosecond laser ablation in a space, and terahertz waves generate resonance in a cavity of the two layers of metamaterial ...

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Номер записи: 3