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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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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 5. Отображено 5.
11-04-2023 дата публикации

Method and system suitable for regional power grid disturbance risk degree prediction

Номер: CN115953019A
Автор: FU HONGJUN, XIONG HAOQING, WANG BUHUA, ZHU SHAOXUAN, DU XIAOYONG, TANG XIAOJUN, LI CHENGHAO, XIE YAN, LI XIAOMENG, GAO ZE
Принадлежит:

The invention discloses a method and system suitable for regional power grid disturbance risk degree prediction, and belongs to the technical field of electric power grids. The method comprises the following steps: acquiring original disturbance data of a regional power grid, and preliminarily classifying the original disturbance data of the regional power grid; preprocessing the preliminarily classified regional power grid disturbance data; performing sample normalization processing on the preprocessed regional power grid disturbance data to obtain training data; inputting the training data into a convolutional neural network for training to obtain a convolutional neural network model; and predicting the risk degree of the regional power grid disturbance by using the convolutional neural network model. According to the invention, topological information of 3/2 wiring can be expressed in detail, and network information expression is constructed based on the topological information; and ...

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Номер записи: 1
15-08-2023 дата публикации

Day-ahead distributed robust economic dispatching method considering uncertainty

Номер: CN116599049A
Автор: LI HUJUN, DENG FANGZHAO, TIAN CHUNZHENG, WANG LEI, DU XIAOYONG, YANG MENG, GUO XINGWU, DENG ZHENLI, SI JIANAN, YU BONING, LI PENG, YIN SHUO, LIU JUNHUI, YANG QINCHEN, HE JIYAO, LANG QINGYONG
Принадлежит:

The invention relates to a day-ahead distributed robust economic dispatching method considering uncertainty. The method comprises the following steps: step 1, obtaining related parameters of a power system and related data of wind power load uncertainty; 2, under the condition that the uncertainty standard deviation and different wind power load correlation are known, considering a wind power output and load power uncertainty representation method, constructing a day-ahead distributed robust economic dispatching model considering uncertainty, and reconstructing related opportunity constraints by adopting a linearization method to improve the model solving efficiency; 3, introducing an uncertainty price, carrying out uncertainty clearing, and proving the balance of an uncertainty price mechanism, so that the optimal operation mode obtained by solving is used for operation, the uncertainty price mechanism is always balance in income and expenditure, and the scheduling method and the price ...

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Номер записи: 2
30-06-2023 дата публикации

Regional power grid abnormal disturbance quantity prediction method and device, medium and electronic equipment

Номер: CN116362300A
Автор: XIONG HAOQING, FU HONGJUN, WANG BUHUA, DU XIAOYONG, TANG XIAOJUN, LI CHENGHAO, SHAO DEJUN, WANG MENGXUAN, ZHU SHAOXUAN, LI XIAOMENG
Принадлежит:

The invention discloses a regional power grid abnormal disturbance quantity prediction method and device, a medium and electronic equipment. The method comprises the following steps: collecting regional power grid data within a predetermined time between prediction times, performing prediction analysis on the regional power grid data according to a pre-trained LSTM prediction model, and determining a first oscillation disturbance quantity prediction result and a disturbance space prediction result; performing prediction analysis on the regional power grid data according to a pre-trained GARCH prediction model, and determining a second oscillation disturbance quantity prediction result; carrying out fusion processing on the first oscillation disturbance quantity prediction result and the second oscillation disturbance quantity prediction result by utilizing an entropy weight method, and determining an abnormal disturbance quantity prediction result of the regional power grid, the abnormal ...

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Номер записи: 3
30-06-2016 дата публикации

RAILWAY TRACK STABILIZING DEVICE

Номер: WO2016101320A1
Автор: SUN, Qing, DU, Xiaoyong, WANG, Zhijun
Принадлежит:

A railway track stabilizing device, comprising a main vehicle frame, a vibration-excitation portion (1), a box body (2) and a driving motor, and the box body is connected to a bottom part of the main vehicle frame via a retractable oil cylinder (301). The vibration-excitation portion is installed inside the box body, the vibration-excitation portion comprising a driving shaft (11), a second vibration-excitation shaft (12) and a third vibration-excitation shaft (13) arranged in parallel; two ends of the driving shaft, the second vibration-excitation shaft and the third vibration-excitation shaft are respectively and rotatably installed on the opposite front wall and back wall of the box body, and the driving shaft is above and between the second vibration-excitation shaft and the third vibration-excitation shaft; a first eccentric block (121) fixedly sleeves the second vibration-excitation shaft, and a second eccentric block (131) fixedly sleeves the third vibration-excitation shaft; if ...

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Номер записи: 4
18-04-2023 дата публикации

Method and system for predicting broadband oscillation risk of section of sending-end source power grid

Номер: CN115983507A
Автор: FU HONGJUN, XIONG HAOQING, SUN HAISHUN, TANG XIAOJUN, LI YAN, XIE YAN, HAO JUNJIE, DU XIAOYONG, SHAO DEJUN, LI CHENGHAO, SHI MENGXUAN, WANG DONGZE
Принадлежит:

According to the sending-end source power grid section broadband oscillation risk prediction method and system, broadband analysis is carried out on single PMU measurement sampling through a cyclic sampling system, and a corresponding day broadband oscillation four-gear time sequence data structure is formulated, so that the data size of broadband oscillation source analysis is greatly compressed, and the analysis efficiency is improved; through a dynamic typical PMU monitoring point selection algorithm, the broadband oscillation analysis data volume of the source end power grid is further compressed, and particularly on the basis of ensuring certain broadband oscillation analysis quality, while the broadband oscillation data are dispersed on each PMU, the broadband data are transmitted to a regional power grid central control analyzer; through fuzzy processing, the quantification difficulty of the regional source end power grid in the aspect of evaluation is objectively expressed, and ...

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Номер записи: 5