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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 7. Отображено 7.
04-04-2023 дата публикации

Rime removing device for high-voltage transmission line

Номер: CN115912230A
Автор: ZHUANG WENBING, YANG YANG, WANG HONGXIA, LI XIAOGUANG, ZHANG BO, ZHAO PUZHI, LI MENG, ZHAO MINGGUAN, MA SHUYANG, AN JINPENG, MA CHAO
Принадлежит:

The invention discloses a rime removing device for a high-voltage power transmission line, and relates to the technical field of disaster prevention and reduction of a power system, the rime removing device comprises an impeller, the impeller comprises fan blades, a hub and teeth, the fan blades are arranged on the outer side of the hub and connected with the hub, the inner side of the hub is provided with a center hole for a wire to penetrate through, and the teeth are arranged on the side edge of the center hole. The rime removing device solves the problem of removing rime accumulated on a wire and a ground wire of a high-voltage transmission line in a cold region, the impeller driven by wind power is installed on the wire or the ground wire, when the impeller spirally advances with the wire as the axis and driven by the wind power, teeth of the impeller can scrape off the rime accumulated on the wire or the ground wire, and therefore the rime removing effect is achieved. Fault tripping ...

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Номер записи: 1
01-08-2023 дата публикации

Power transmission line windage yaw flashover early warning method based on numerical weather forecast

Номер: CN116522578A
Автор: ZHAO MINGGUAN, YANG YANG, LI MENG, ZHAO PUZHI, DONG XINSHENG, ZHANG XIAOGANG, WANG HONGXIA, ZHUANG WENBING, LI XIAOGUANG, LIU LEI, MA SHUYANG, JIANG XINGLIANG, ZHANG ZHIJING, HU JIANLIN, DENG HONGFEI
Принадлежит:

The invention discloses a numerical weather forecast-based power transmission line windage yaw flashover early warning method, which comprises the following steps of: 1, inputting power transmission line design parameters and power transmission line regional weather forecast data, and carrying out fluctuating wind speed time history Sv calculation by adopting a Daviport spectrum; 2, inputting the fluctuating wind speed time history Sv of each point in the space on the conductor and the included angle theta between the wind direction and the power transmission line in MATLAB, calculating the wind load of the conductor, and solving the maximum wind drift angle phi of the power transmission line by adopting a rigid body straight rod method; 3, substituting the maximum wind deflection angle phi of the power transmission line into the structural size data of a specific tower, establishing a geometrical relationship between the tower and a to-be-solved gap as well as between the lead and the ...

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Номер записи: 2
25-10-2019 дата публикации

Horizontal-displacement-resistant root type combined soil retaining structure

Номер: CN0209538212U
Автор: LIANG YAN, CHEN PEI, DONG XINSHENG, MA JIANGONG, LI SHAN, ZHAO MINGGUAN
Принадлежит: UNIV ZHENGZHOU, STATE GRID XINJIANG ELECTRIC POWER CO LTD ELECTRIC POWER RES INST, ZHENGZHOU UNIVERSITY, STATE GRID XINJIANG ELECTRIC POWER CO., LTD., ELECTRIC POWER RESEARCH INSTITUTE

The utility model discloses a horizontal-displacement-resistant root type combined soil retaining structure. The structure comprises a wall body, a base, a plurality of grouting anchor rods and a plurality of concrete-filled steel tube anchor piles, wherein the wall body is poured and located on the base, the multiple grouting anchor rods are distributed at the bottom of the base at equal intervals in the longitudinal direction of the wall body, the grouting anchor rods correspond to wall heels of the wall body in position, the grouting anchor rods are vertically inserted into lower in-situ stable bedrock, and the tops of the grouting anchor rods are connected with the base in a pouring mode. The multiple concrete-filled steel tube anchor piles are distributed at the bottom of the base atequal intervals in the longitudinal direction of the wall body, correspond to wall toes of the wall body in position and are vertically arranged; the grouting anchor rods are correspondingly arrangedat ...

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Номер записи: 3
04-04-2023 дата публикации

Numerical simulation method of bealock and canyon terrain wind speed field

Номер: CN115906690A
Автор: YANG YANG, LI MENG, ZHAO MINGGUAN, MA SHUYANG, ZHANG XIAOGANG, WANG YUCHEN, LI XIAOGUANG, DONG XINSHENG, ZHUANG WENBING, JIANG XINGLIANG, HU JIANLIN, ZHANG ZHIJING, ZHENG HUALONG, DENG HONGFEI
Принадлежит:

The invention discloses a numerical simulation method for a bealock and canyon terrain wind speed field, and the method comprises the steps: optimizing a three-dimensional calculation model of a calculation domain through considering environment parameters of the bealock and canyon terrain and the thickness condition of a grid on the surface of a mountain, and simulating the wind speed field of a canyon and bealock model. The relationship between the wind speed field and the topographic parameters is analyzed. According to the specific technical scheme, the method comprises the following steps that S1, a cosine curve is selected for the outer contour of a single mountain body; stretching is carried out on the basis of a single mountain to form mountains, the distance between the two mountains is set, when the distance between the mountains is larger than the diameter of the mountain, the bealock terrain is formed, and otherwise, the canyon terrain is formed. S2, according to the size of ...

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Номер записи: 4
05-05-2023 дата публикации

Overhead transmission conductor deicing jump risk early warning method and system

Номер: CN116070490A
Автор: LI MENG, YANG YANG, ZHAO MINGGUAN, ZHANG XIAOGANG, ZHUANG WENBING, DONG XINSHENG, ZHAO PUZHI, WANG HONGXIA, LI XIAOGUANG, LIU LEI, MA SHUYANG, JIANG XINGLIANG, ZHANG ZHIJING, HU JIANLIN, DENG HONGFEI
Принадлежит:

The invention discloses an overhead transmission conductor deicing jump risk early warning method, and relates to the field of power grid disaster prevention and reduction, and the method comprises the steps: constructing a deicing numerical simulation model, and obtaining an ice jump height calculation formula; determining a static icing minimum gap between the wires during static icing of the wires; determining a dynamic deicing minimum gap of the wire; and performing line checking and early warning according to the dynamic amplification coefficient of the lead structure system. The invention also provides an overhead transmission conductor deicing jump risk early warning system. Whether the line passes the checking early warning is quickly judged according to whether the state of the wire is within the change range of the wire span and the icing thickness, and the early warning is performed if the checking is not passed.

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Номер записи: 5
02-05-2023 дата публикации

Power transmission line icing flashover early warning method and system based on power grid ledger and support vector machine

Номер: CN116050272A
Автор: YANG YANG, WANG HONGXIA, ZHAO MINGGUAN, LI MENG, LI XIAOGUANG, DONG XINSHENG, ZHUANG WENBING, FU HAO, ZHANG XIAOGANG, MA SHUYANG, LIU LEI, JIANG XINGLIANG, ZHENG HUALONG, HU JIANLIN, ZHANG ZHIJING, HU QIN, LONG ZHIYUAN
Принадлежит:

The invention discloses a power transmission line icing flashover early warning method based on a power grid ledger and a support vector machine, and relates to the technical field of disaster prevention and reduction of a power system, and the method comprises the steps: collecting historical power transmission line icing flashover accident information for historical power transmission line icing flashover accidents recorded in a power grid system; collecting related power grid machine account data of the line before the historical power transmission line icing flashover accident time point; performing data preprocessing on the collected historical power transmission line icing flashover accident information and the historical machine account data of the power grid to obtain a normalized sample data set; establishing a support vector machine training model, and training by using the normalized sample data; performing precision evaluation on the support vector machine model, and establishing ...

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Номер записи: 6
27-08-2021 дата публикации

Improved heat dissipation device of electrical equipment

Номер: CN214070480U
Автор: ZHAO MINGGUAN, LIU WEI, WANG LIFU, WANG JIAN, YANG CHUNXIA, ZHANG BO, FU HAO, ZHANG XIAOJUN, YANG YANG, LI MENG, DONG XINSHENG, YUE YUNKAI, YU HAI, JIE SHUANGQUAN, CHEN JIA, ZHAO XIAOYU, 赵蓂冠, 刘威, 王立福, 王建, 杨春侠, 张博, 付豪, 张小军, 杨洋, 李孟, 董新胜, 岳云凯, 于海, 揭双全, 陈佳, 赵晓宇
Принадлежит: STATE GRID XINJIANG ELECTRIC POWER CO LTD ELECTRIC POWER RES INST, UNIV CHANGSHA SCIENCE & TECH, STATE GRID XINJIANG ELECTRIC POWER CO., LTD., ELECTRIC POWER RESEARCH INSTITUTE, CHANGSHA UNIVERSITY OF SCIENCE & TECHNOLOGY, 国网新疆电力有限公司电力科学研究院, 长沙理工大学

The utility model discloses an improved electrical equipment heat dissipation device, which comprises a fixed seat, a groove is formed in the top of the fixed seat, first vertical grooves are formed in the two sides of the inner wall of the groove, bearing plates are arranged in the first vertical grooves, damping springs are arranged at the bottoms of the bearing plates, and limiting plates are fixedly connected to the tops of the bearing plates. A working groove is formed in the top of the limiting plate, a water storage bin is slidably connected to the interior of the working groove, a first threaded groove is formed in one side of the limiting plate, and a first bolt is in threaded connection to the interior of the first threaded groove. According to the device, a bearing plate is installed through a first vertical groove and matched with a damping spring, the damping capacity of the device is improved, meanwhile, a limiting plate is driven through the bearing plate, a portal frame ...

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Номер записи: 7