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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

Electrical design method and system for extra-high voltage direct current transmission line in high altitude area

Номер: CN115912169A
Автор: WEN WEIBING, LI BENLIANG, YUAN FEI, ZHANG LINFENG, LU JUN, ZHANG YIGENG, YAN JIANXING, LIU PEIJIE, WU GANG, ZHANG SIDE, LI JINGBO, ZHENG QINGTIAN
Принадлежит:

The invention relates to an electrical design method and system for an extra-high-voltage direct-current transmission line in a high-altitude area. The method comprises the following steps: selecting a wire in the extra-high-voltage direct-current transmission line in the high-altitude area; obtaining an altitude correction coefficient, and determining the insulator length after altitude correction and air gaps under different altitudes and different overvoltage multiples; based on the determined insulator length and the air gap, determining the value of the inter-electrode distance in the ultra-high-voltage direct-current transmission line in the high-altitude area; according to an audible noise formula and an altitude correction coefficient of the high-altitude area, electromagnetic environment values after altitude correction at different altitudes are calculated, and whether the value of the selected wire and the determined inter-electrode distance exceeds a preset limit value requirement ...

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Номер записи: 1
05-03-2014 дата публикации

High-definition hard disk video recorder

Номер: CN103618867A
Автор: ZHOU ZHIQI, ZHOU HENGYUN, XIE QIMING, LIU LEI, WEI LIU, ZHANG SIDE
Принадлежит:

The invention discloses a high-definition hard disk video recorder. An upper shell and a lower shell are fixed through simple screws. A front shell and a rear shell are fixed to the portion between the upper shell and the lower shell through screws or clamping grooves. The simple combination facilitates assembly and disassembly of the whole hard disk video recorder and is beneficial to production and maintenance. An alarm terminal and a main board are installed on the lower shell, keys and a PCB are arranged on the front shell, a fan, a VGA interface and a BNC plug are installed on the rear shell, and therefore layout is reasonable and orderly. H.264 High Profile is adopted by the high-definition hard disk video recorder, so that the storage capacity of the high-definition hard disk video recorder is large, full real-time coding video of 4 paths of D1, 2 paths of D1+6 paths of CIF and 16 paths of CIF is supported, and simultaneous output of a TV, a VGA and a HDMI is supported.

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Номер записи: 2
08-10-2014 дата публикации

Electric system multi-domain distributed state estimation method based on PMU measurement

Номер: CN104092212A
Автор: CHEN SHENG, WEI ZHINONG, SUN GUOQIANG, SUN YONGHUI, ZHANG SIDE, CHEN CHEN, QIAN ZHEN, LI CHAO
Принадлежит:

The invention discloses an electric system multi-domain distributed state estimation method based on PMU measurement. Firstly, a linear measurement model is assumed to expand partitions in a subdomain method, expanded subdomains contain boundary buses of adjacent domains, the fact that the quantity of state of the boundary buses is identical serves as an equality constraint, a WLS serves as an optimization object, an ADMM is adopted for solving, the subdomains simply need to exchange information of the quantity of state of the boundary buses without a central coordination side, and independence of all the subdomains is reserved; secondly, a bilinear theory is expanded to PMU measurement, traditional nolinear WLS estimation is converted into a three-phase problem, the first phase and the third phase carry out linear WLS estimation (all the subdomains are solved through the ADMM in a distributed mode), and the second phase conducts one-step nonlinear transformation (all the subdomains can ...

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Номер записи: 3
21-04-2023 дата публикации

Remote real-time traceability standard clock applied to electric energy meter calibrating device

Номер: CN115993571A
Автор: ZHAO ZHENYU, LIU QIANG, LIU SHIPING, WANG JUN, DENG GAOFENG, GUO XUEWEI, ZHAO YAN, ZHU JING, WANG AIMIN, HU TAO, ZHANG SIDE
Принадлежит:

The invention discloses a remote real-time traceability standard clock applied to an electric energy meter calibrating device, which comprises an electric energy meter calibrating device body, a time code generator, a loop detection module, a time code decoder and a time frequency terminal module, the time code generator and loop detection module is connected with the time code decoder and is used for generating a time code signal; the time code decoder is also connected with the time frequency terminal module, and the time code decoder is used for receiving and decoding the time code signal and generating a time signal; and the time frequency terminal module is also connected with the electric energy meter calibrating device body and is used for monitoring the electric energy meter calibrating device body. According to the invention, the method achieves the ground application of the remote traceability of the time frequency magnitude in the power system, achieves the unification of traceability ...

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Номер записи: 4
30-03-2018 дата публикации

Strip thickness control prefabricated component

Номер: CN0207163374U
Автор: ZHANG SIDE, RUAN YOUPIN, PAN PING, XIA XUGUI, YUAN JUN, LI LIANG, YIN BAOJIAN, TIAN YE, HUANG HONGLIANG, SHI TAO
Принадлежит: HUBEI ZHIJIANG HONGYU CONSTRUCTION ENG CO LTD, HUBEI ZHIJIANG HONGYU CONSTRUCTION ENGINEERING CO., LTD.

The utility model provides a strip thickness control prefabricated component, includes the panel panel upper portion is equipped with the vertically fixed plate be equipped with at least three connecting hole on the panel, every the connecting hole corresponds a measuring stick, and the connecting hole can be passed to the at least one end of measuring stick, the measuring stick includes circularconnecting rod circular connecting rod front end is equipped with accuracy of measurement circular connecting rod rear end is equipped with the dipperstick, is equipped with the locating hole on the dipperstick, connecting hole upper surface edge is equipped with the fixed block, and the dead lever passes on the preformed hole of positioning hole connector on the fixed block. This reality has neotype advantage to be, can repeatedly be used for board thick ( concrete floor's) measurement, and measurement accuracy is high.

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Номер записи: 5
23-05-2023 дата публикации

Manufacturing and mounting method of blast furnace gas sealing cover

Номер: CN116140999A
Автор: WANG BING, LIU DAOQING, MENG SHUMIN, YU XINMIAO, ZHAO SHIJIE, ZHANG SIDE, JIA LIJUN, LI QINGYANG, ZHANG XIANGGUO, CHEN CHENG, SHI XIAOZHAO, ZHAO SHUANG, LYU JIE, CHEN JIEYING, LI LINCAN
Принадлежит:

A manufacturing and installing method of a blast furnace gas sealing cover is characterized in that the gas sealing cover adopts the design concept of a shell, a protection piece and a sealing heat insulation piece, and a gap between the protection piece and the shell of the gas sealing cover is filled with waterless press-in mud or (pouring) castable. The coal gas sealing cover has the advantages that the defects of high construction difficulty, easiness in falling of refractory materials and difficulty in overhaul and maintenance due to the traditional adoption of the refractory materials for protecting the coal gas sealing cover shell are overcome; the defect of investment waste caused by more rebound materials during traditional refractory material construction is avoided; according to the novel gas sealing cover manufacturing and installing method, structural integrity and construction convenience are better, abrasion resistance, firmness and stability are higher, the service life ...

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Номер записи: 6
25-06-2014 дата публикации

Fuzzy self-adaptation robust estimation method of electric power system

Номер: CN103886193A
Автор: WEI ZHINONG, CHEN SHENG, NI MING, YU WENJIE, SUN GUOQIANG, SUN YONGHUI, LI CHAO, LI WEI, QIAN ZHEN, ZHANG SIDE, CHEN CHEN
Принадлежит:

The invention discloses a fuzzy self-adaptation robust estimation method of an electric power system, and provides a fuzzy self-adaptation robust estimation algorithm with uncertainty metering and measuring weight of the electric power system. According to the algorithm, a measuring point inferior fuzzy membership conception is put forward, the standard deviation of a measuring point is corrected in an on-line mode according to the membership of the measuring point, and gross error self adaptation is achieved. A modern interior point method is used for solving, convergence is good, results cannot be affected by an initial value easily, the solving large-scale optimization problem is solved, bad data are effectively recognized, residual error contamination and residual error flooding are avoided, excellent robust estimation performance is achieved to the quantity of state and quantity measuring, and a good engineering application background is achieved.

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Номер записи: 7