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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 20. Отображено 20.
04-04-2023 дата публикации

Direct buried cable intermediate head fault rapid detection unmanned aerial vehicle system and method

Номер: CN115902514A
Автор: LI GUOWEI, WANG JUNBO, TANG QI, ZHANG YIN, FAN XINMING, LI XIN, CHEN ZHIPING, LIU SONG, DONG DI, SONG ANQI, JIANG WEI, LIU SHAOHUI, CHEN XIANXI, ZENG QINGHUI, LIANG NIANBAI, LIU HAO, WU ZHUOJUN, ZHANG TAO, LAI YANSHAN, GUO GUOWEI, LU ZHIXIN, HE ZHIXIANG, CHEN QIANSHEN, WANG ZHIGANG, ZHANG WEIZHONG, HE SHENGHONG
Принадлежит:

The invention relates to the technical field of power fault detection, and discloses a direct-buried cable intermediate head fault rapid detection unmanned aerial vehicle system and method, and the system injects a pulse signal into a detected cable, and reaches a preset detection position of an intermediate head of a to-be-detected cable through an unmanned aerial vehicle according to intermediate head positioning information inputted in advance. The sound vibration sensing probe is used for acquiring a sound signal and an electromagnetic signal of a to-be-detected cable intermediate head, the sound signal and the electromagnetic signal are preprocessed by recording triggering time corresponding to the sound signal and the electromagnetic signal respectively, and the preprocessed sound signal and the preprocessed electromagnetic signal are sent to the unmanned aerial vehicle control background. Synchronous time service is performed on the injection time of the pulse signal injected into ...

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Номер записи: 1
12-08-2015 дата публикации

Voltage transient fault detector based on electric energy quality monitor

Номер: CN104833939A
Автор: TANG QI, LI GUOWEI, LUO RONGBO, CHEN XIANXI, LIU SHAOHUI, XING LIKUN
Принадлежит:

The invention relates to a voltage transient fault detector based on an electric energy quality monitor. The detector comprises a signal generator, a three-phase transformer, four adjustable rheostats and two relays, wherein the signal generator outputs three phases of sine wave signals of the preset frequency and with the phase difference of 120 degree, the relays are connected with the signal generator, and the three-phase transformer receives the three phases of sine wave signals; first ends of three adjustable rheostats are respectively connected with phase potential ends of three secondary windings of the three-phase transformer, and second ends of the three adjustable rheostats are respectively connected with the neutral ends of the three secondary windings of the three-phase transformer via three nodes of the first relay; and the first end of the other adjustable rheostat is connected with the phase potential end of a secondary winding of the second relay. The signal generator outputs ...

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Номер записи: 2
08-08-2023 дата публикации

Oil-gas separation device

Номер: CN116550014A
Автор: CHEN BAIQUAN, HE ZILAN, HUANG JING, CHEN BANGFA, SHI QIAO, CHEN DAOPIN, WU JIANGYI, HUANG QINGSHA, ZHANG XIAOCEN, LIU SHAOHUI, CHEN XIANXI, WU WOSHENG
Принадлежит:

The invention relates to the technical field of oil-gas separation, and particularly discloses an oil-gas separation device which comprises a separation tank, a hydraulic rod and a circulation assembly. The hydraulic rod is mounted on the separation tank; a piston plate is arranged at the output end of the hydraulic rod; the piston plate extends into the separation tank and can be propped against the inner wall of the separation tank in a sliding manner; the hydraulic rod is used for driving the piston plate to move to form negative pressure in the separation cavity; the circulating assembly comprises a circulating pump, a liquid inlet pipe and a liquid outlet pipe; the circulating pump is arranged on the separation tank; the circulating pump is used for enabling oil in the separation cavity to circulate along the liquid inlet pipe and the liquid outlet pipe when negative pressure is formed in the separation cavity; according to the scheme, through the negative pressure environment and ...

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Номер записи: 3
14-05-2014 дата публикации

Manufacturing method of spheroidal graphite cast iron casting of wind power yaw variable-pitch device

Номер: CN103789605A
Автор: CHEN XIANXI, HONG SHUHUAI, MU FUCHAO, YU SONGQING
Принадлежит:

The invention discloses a manufacturing process of a spheroidal graphite cast iron casting of a wind power yaw variable-pitch device. The process comprises the following processes of mould making, foaming and moulding, paint brushing, boxing and shaping, electric furnace smelting, tundish-covering nodulizing treatment, vacuum-assist pouring and three-time inoculation treatment, wherein the boxing and shaping process is a layered assembling process, so that the production efficiency can be improved and the process yield can be increased; cold iron is vibrated and reasonably arranged, so that the compactness of tissues in the casting can be improved and the defect of shrinkage porosity can be avoided; by virtue of the processes of electric furnace smelting and tundish-covering nodulizing treatment, the nodulizing rate of the casting can be stabilized and increased and the mechanical properties of the casting can meet the technical quality requirements of wind power castings; the spheroidal ...

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Номер записи: 4
01-05-2018 дата публикации

Printing machine logistics system is with automatic device that aligns

Номер: CN0207293445U
Автор: CHEN XIANXI, GAO MING, GUO ZHANGQI, LIU LINYAN, ZHOU DONG, WU YUWEN
Принадлежит: HUIYUAN PRINTING & PACKAGING TECH TIANJIN CO LTD, HUIYUAN PRINTING & PACKAGING TECHNOLOGY (TIANJIN) CO., LTD.

The utility model provides a printing machine logistics system is with automatic device that aligns, including portal frame, locating plate, electronic jar no. 1, support frame, electronic jar no. 2,clamp plate, magnetite, cleaning brush, sliding block, lead screw and motor, electronic jar no. 2 is installed on the inside top of portal frame, two lower extremes in the electronic jar are providedwith the clamp plate, the portal frame lower extreme is equipped with the locating plate, electronic jar no. 1 is connected to the locating plate outer end, an electronic jar outer end sets up the support frame, and this design has realized the function of automatic positioning, the lead screw is installed to the magnetite rear end, the magnetite front end is equipped with the cleaning brush, thecleaning brush right -hand member is connected with the sliding block, the sliding block is installed on the lead screw, the lead screw right -hand member is equipped with the motor, and this design has realized ...

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Номер записи: 5
30-04-2014 дата публикации

Method for preparing nodular cast iron

Номер: CN103757172A
Автор: HONG SHUHUAI, CHEN XIANXI, YU SONGQING
Принадлежит:

The invention discloses a method for preparing nodular cast iron. According to the invention, a cupola melting technology and an appropriate nodulizing process technology are adopted, inoculation is conducted for many times, and the box is opened in appropriate time, and therefore, that the high-quality low-temperature high-toughness nodular cast iron, of which the low-temperature comprehensive performance conforms to the QT400-18AL(-20 DEG C) standard is obtained is ensured. The nodular cast iron contains the following ingredients by weight percent: 3.3-3.6 percent of C, 1.8-2.2 percent of Si, less than 0.20 percent of Mn, 0.040 percent of P and Lt, 0.020 percent of S and Lt, 0.030-0.040 percent of Re and 0.040-0.055 percent of Mg. The nodular cast iron can meet the quality demands of low-temperature high-performance castings of wind power, nuclear power, high-speed rails and the like with higher quality requirements.

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Номер записи: 6
21-04-2023 дата публикации

Method and device for evaluating dissolved gas in main transformer oil

Номер: CN115993421A
Автор: WANG JUNBO, ZHANG YIN, JIANG WEI, LI GUOWEI, TANG QI, LIU SONG, WANG ZHIJIAO, CHEN XIANXI, ZENG QINGHUI, XIONG SHIBIN, LUO RONGBO, SONG ANQI, LI XIN, FAN XINMING, DONG DI
Принадлежит:

The invention discloses a method and a device for evaluating dissolved gas in main transformer oil. The method comprises the following steps: acquiring online monitoring historical data of the dissolved gas in to-be-analyzed main transformer oil; constructing an original matrix of each component based on the online monitoring historical data of the dissolved gas; expanding the original matrix to obtain an expanded matrix of each component, and calculating an average spectrum ratio of the expanded matrix of each component; and based on the average spectrum ratio, determining a comprehensive quality index value corresponding to the online monitoring historical data of the dissolved gas and an evaluation grade of the main transformer oil to be analyzed. The hidden trend of online monitoring historical data of dissolved gas as an evaluation factor is dominated, so that the sensitivity and the stability of latent fault pre-judgment are greatly improved, and differentiated evaluation of similar ...

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Номер записи: 7
12-05-2023 дата публикации

Main transformer thermal characteristic monitoring method and system

Номер: CN116108760A
Автор: ZHANG YIN, WANG JUNBO, LI GUOWEI, TANG QI, XIONG SHIBIN, JIANG WEI, LUO RONGBO, MO JING, JIN XIANGCHAO, XU PENGJIANG, CHEN XIANXI, LIU SONG, WANG ZHIJIAO, FAN XINMING, LI XIN, DONG DI, SONG ANQI
Принадлежит:

The invention discloses a main transformer thermal characteristic monitoring method and system. And based on the main transformer operation data, determining a main transformer oil temperature numerical calculation input quantity. And based on the oil temperature numerical calculation input quantity, the least square method and the radial basis function neural network, constructing an oil temperature numerical calculation model corresponding to the main transformer. And performing longitudinal and transverse anomaly detection by using the oil temperature numerical calculation model and the historical operation data of the main transformers to generate a thermal characteristic anomaly main transformer set. And when the main transformer does not belong to the main transformer set with the abnormal thermal characteristics, the oil temperature numerical calculation model and the historical operation data of the main transformer are adopted to carry out space-time dimension difference comparison ...

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Номер записи: 8
22-08-2023 дата публикации

Neural network model generation method based on computing power resource optimization and related device

Номер: CN116629347A
Автор: ZHANG YIN, JIANG WEI, XIONG SHIBIN, LI GUOWEI, WANG JUNBO, TANG QI, FAN XINMING, LUO RONGBO, LIU YIJUN, CHEN YANPENG, LI XIN, DONG DI, SONG ANQI, CHEN XIANXI, WU ZHUOJUN, WANG ZHIJIAO, LIU SONG, JIANG PEIDONG
Принадлежит:

The invention discloses a neural network model generation method based on computing power resource optimization and a related device, and the method comprises the steps: testing the amount of computing power resources occupied by a neural network model operator on different chips through employing a preset test case, and constructing an operator computing power occupation table; on the basis of determining a search constraint item based on an operator power occupation table, constructing a reinforcement learning state space according to an action selected by a network structure operator, the reinforcement learning state space comprising a state vector; based on a preset reward function and a preset loss function, a strategy gradient algorithm is adopted to train a preset strategy network to iteratively search an optimal network structure in the reinforcement learning state space, an optimal neural network model is obtained, and the preset loss function comprises an Actor loss function and ...

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Номер записи: 9
04-02-2015 дата публикации

Method and system for predicting false protection action of heavy gas of compact transformer

Номер: CN104331567A
Автор: WANG JUNBO, LUO RONGBO, LI LEI, LI GUOWEI, XU XIN, LIU SHAOHUI, CHEN XIANXI, LIU HAO, LI XIN
Принадлежит:

The invention provides a method and a system for predicting false protection action of heavy gas of a compact transformer. The method comprises the following steps of firstly, according to the structure parameters of the compact transformer, building a 1:1 three-dimensional coupled finite element model; then, calculating fluid-structure interaction numbers, and simulating to obtain the relationship of short-circuiting current and transform oil flow surge with different amplitudes; according to the simulation result, predicting whether the compact transformer has the false action of heavy gas or not. By adopting the technical scheme, the method has the advantages that the occurrence possibility of false action accidents of the heavy gas of the compact transformer is reduced, and the running reliability of the compact transformer is improved.

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Номер записи: 10
08-08-2023 дата публикации

Oil-gas separation device and method and oil chromatographic analysis device

Номер: CN116550013A
Автор: CHEN BANGFA, CHEN BAIQUAN, HE ZILAN, LIU SHAOHUI, CHEN DAOPIN, CHEN XIANXI, HUANG JING, CHEN SIXIANG, LIU YIJUN, WEN KEMING
Принадлежит:

The invention relates to the technical field of oil-gas separation, and particularly discloses an oil-gas separation device and method and an oil chromatographic analysis device.The oil-gas separation device comprises a storage box, a separation assembly and a backflow assembly; the separation assembly is used for oil-gas separation and comprises a feeding end, a gas outlet end and a liquid outlet end. The backflow assembly comprises a material suction pump, a material suction pipe and a backflow pipe; the transfer pump is arranged on the storage box; the first end of the suction pipe is connected with the inlet end of the transfer pump, and the second end extends into the storage box; the first end of the return pipe is connected with the outlet end of the transfer pump, and the second end is connected with the feeding end of the separation assembly. According to the scheme, the storage box collects oil liquid discharged from the separation assembly, the oil liquid in the storage box is ...

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Номер записи: 11
22-04-2015 дата публикации

A prediction method, a prediction device, and a defense method for a short circuit fault of a high-voltage power transformer

Номер: CN104537137A
Автор: LUO RONGBO, WANG JUNBO, LI LEI, LI GUOWEI, XU XIN, LI XIN, CHEN XIANXI, LIU SHAOHUI
Принадлежит:

The invention provides a prediction method, a prediction device, and a defense method for a short circuit fault of a high-voltage power transformer. The prediction method for the short-circuit fault of the high-voltage power transformer comprises the steps of acquiring trip short-circuit current of the high-voltage power transformer to be predicted, and obtaining a lightning stroke power transmission line structure model by using electromagnetic transitory simulation software, wherein, the lightning stroke power transmission line structure model comprises a high-voltage power transformer model and a pole tower model; executing lightning stroke test simulation on the pole tower model by using the electromagnetic transitory simulation software, and acquiring lightning stroke short-circuit current generated by the pole tower model during the simulation; comparing the lightning stroke short-circuit current with the trip short-circuit current, and acquiring, according to the compared result, ...

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Номер записи: 12
29-08-2023 дата публикации

Charging control method and device for series-parallel multi-port flexible interconnection equipment

Номер: CN116667345A
Автор: FAN XINMING, SONG ANQI, DONG DI, LI XIN, ZENG QINGHUI, TANG QI, ZHANG YIN, WANG JUNBO, LI GUOWEI, JIANG WEI, LUO RONGBO, ZHONG GUANTIAN, LIU SHISHENG, ZHANG TAO, CHEN XIANXI, LIU SHAOHUI, WU ZHUOJUN, LIU SIDA, WANG JIEQING, WANG JIKANG, SI ZHE
Принадлежит:

The invention discloses a charging control method and device for a series-parallel connection type multi-port flexible interconnection device, and relates to the technical field of flexible interconnection. According to the scheme provided by the invention, a pre-charging process when the series-parallel connection type multi-port flexible interconnection device is started is optimized, and when the pre-charging is carried out to the final stage, the pre-charging process is optimized; by comparing the voltage parameters of each power sub-module in the device, the power sub-modules are cut off in batches according to the voltage of each power sub-module, and the voltage of each power sub-module is smoothly charged to the rated voltage step by step, so that the deviation between the pre-charging voltage and the actual set voltage is reduced, and the effect of weakening the impact current is achieved; and normal operation of each device in the equipment is ensured.

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Номер записи: 13
22-08-2023 дата публикации

Grid-connected starting system and method of multi-port flexible interconnector

Номер: CN116632924A
Автор: SONG ANQI, FAN XINMING, JIANG WEI, LIU CHENG, CHEN XIANXI, DONG DI, LI XIN, LIU SHAOHUI, WANG JUNBO, TANG QI, ZHANG YIN, LIU TONG, SHI XUNTAO, KE QINGPAI, YANG JINDONG
Принадлежит:

The invention relates to the technical field of flexible interconnection power distribution networks, discloses a grid-connected starting system and method of a multi-port flexible interconnector, and discloses a starting control loop of the multi-port flexible interconnector, which can be simultaneously suitable for a balance node port, an active node port and a passive node port. And the difference of starting control loops of different types of ports is reduced. Meanwhile, starting time sequences of three types of node ports are provided, stable starting of the balance node port, the active node port and the passive node port from a shutdown state to a normal operation state is achieved, and meanwhile, in a starting control loop of the multi-port flexible interconnector, the starting time sequences of the three types of node ports are controlled to be stable. The provided virtual impedance control module can adjust virtual resistance and virtual inductance parameters according to AC ...

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Номер записи: 14
25-04-2023 дата публикации

Fault type judgment method and system based on monitored oil chromatography calibration

Номер: CN116008869A
Автор: HUANG JING, HE ZILAN, CHEN BAIQUAN, XIONG SHIBIN, JIANG WEI, CHEN BANGFA, CHEN SIXIANG, ZHANG FENG, CHEN XIANXI, HUANG QINGSHA, LIU SHAOHUI, SHI QIAO
Принадлежит:

The invention relates to the technical field of transformer oil chromatography, and discloses a fault type judgment method and system based on monitoring oil chromatography calibration. The method comprises the following steps: acquiring characteristic gases and characteristic gas quantities corresponding to a transformer in a fault-free state and transformers in various fault states, and calculating the relative gas production rate of the characteristic gases so as to set a first threshold value and a second threshold value of an attention value and a warning value of the characteristic gases; according to the transformer fault type judgment method, the transformer fault type judgment is performed, the primary fault type judgment and the secondary fault type judgment are respectively performed, and the primary fault type judgment and the secondary fault type judgment are compared, so that the fault type of the transformer is comprehensively judged, and the accuracy of transformer fault ...

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Номер записи: 15
30-05-2023 дата публикации

Spatial information detection device and control method

Номер: CN116184395A
Автор: LI GUOWEI, WANG JUNBO, TANG QI, ZHANG YIN, LIU SONG, CHEN XIANXI, LIU SHAOHUI, LIU HAO, WU ZHUOJUN, GUO GUOWEI, HE ZHIXIANG, CHEN ZHIPING, JIAN GANYANG, LI GUO, LIAO YIFAN, LIAO CHUJING, QU JUNYU, CHEN XINYU
Принадлежит:

The invention discloses a space information detection device and a control method, and the device comprises a pedestal, a main control module, a distance measurement module, and a rotating mechanism. The base is used for measuring the moving distance of the base and triggering the laser radar arranged on the main control module and the ground penetrating radar arranged on the base through the measured moving distance to collect data information, the main control module is fixedly installed at the top of the base and used for receiving the data information and controlling the base to move, and the rotating mechanism is fixedly connected with the bottom of the front end of the base. And the driving module is used for receiving the level signal and driving the base or the main control module to rotate. The problems that an existing space information detection device lacks an automatic rotation function, due to limitation of ground penetrating radar electromagnetic wave emission coverage, the ...

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Номер записи: 16
02-06-2023 дата публикации

Transformer oil temperature meter abnormity identification method and system

Номер: CN116204772A
Автор: ZHANG YIN, LI GUOWEI, WANG JUNBO, TANG QI, JIANG WEI, LUO RONGBO, JIN XIANGCHAO, CHEN XIANXI, HE SHENGHONG, WANG ZHIGANG, ZHANG WEIZHONG, ZHENG WEIQIN, YANG JUNHAO, LIU SONG, WANG ZHIJIAO, LIU SHAOHUI, LIU HAO, WU ZHUOJUN, LI LANYIN, LAI YANSHAN, JIANG PEIDONG
Принадлежит:

The invention relates to the technical field of transformer detection, and discloses a transformer oil temperature meter abnormity identification method and system, and the method comprises the steps: constructing an oil temperature prediction sample set through the oil temperature data, load data and environment temperature data of a transformer; training the oil temperature prediction sample set based on a support vector regression model which is subjected to feature optimization and parameter optimization through a genetic algorithm, constructing a transformer oil temperature prediction model, and performing transformer oil temperature prediction. The state static identification result of the transformer oil temperature meter is calculated from the three aspects of single-point deviation, sequence fluctuation and residual distribution of the transformer oil temperature meter, the change trend of an oil temperature residual sequence is continuously monitored through a sliding time window ...

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Номер записи: 17
11-08-2023 дата публикации

Method and system for suppressing modular multilevel converter in unbalanced power grid

Номер: CN116581790A
Автор: SONG ANQI, JIANG WEI, LI GUOWEI, LIU CHENG, FAN XINMING, LI XIN, DONG DI, CHEN XIANXI, LIU HAO, WU ZHUOJUN, LI XIANG, GUO WEIBIN, PENG FEIJIN, OUYANG WEINIAN
Принадлежит:

The invention discloses a suppression method and system for a modular multilevel converter in an unbalanced power grid, and the method comprises the steps: carrying out the positive and negative sequence component decomposition and phase locking of a three-phase voltage vector of a balanced feed line, and carrying out the balance control of the positive sequence current components of the balanced feed line and other feed lines; the negative-sequence current components of the balanced feeder line and other feeder lines are suppressed, the load active power of the DC side and the reactive power of the balanced feeder line are subjected to balance control, and the negative-sequence current components of the feeder lines connected with the multi-medium-voltage AC/DC port modular multilevel converter are suppressed; the active power of the multi-terminal interconnection module and the three-phase DC bus voltage energy of the multi-terminal interconnection module are subjected to balance control ...

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Номер записи: 18
18-11-2015 дата публикации

Voltage transition trouble examination appearance based on power quality monitor device

Номер: CN0204789966U
Автор: TANG QI, LI GUOWEI, LUO RONGBO, CHEN XIANXI, LIU SHAOHUI, XING LIKUN
Принадлежит:

The utility model relates to a voltage transition trouble examination appearance based on power quality monitor device, include: signal generator, three -phase transformer, four adjustable varistor wares, two relays being connected with signal generator, the first end of three adjustable varistor ware is connected with the looks current potential end of three -phase transformer's three pair of limit winding respectively, and the second end of three adjustable varistor ware is connected with the neutral end of three pair of limit winding respectively through the three node of first relay respectively, the first end of the varistor ware that another is adjustable passes through the second relay and is connected with the looks current potential end of a vice limit winding. Various transient fault are simulated in switch -on or disconnection through first relay and second relay to realize portably inspecing power quality monitor device whether to possess the function of accurately monitoring ...

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Номер записи: 19
16-05-2023 дата публикации

Series-parallel flexible interconnection switch power flow regulation optimization method and device

Номер: CN116131270A
Автор: FAN XINMING, JIANG WEI, XIONG SHIBIN, DONG DI, SONG ANQI, LI XIN, ZHANG YIN, LUO RONGBO, LI GUOWEI, WANG JUNBO, TANG QI, ZENG QINGHUI, CHEN XIANXI, LIU SHAOHUI, WU ZHUOJUN, HUANG JING, CHEN BANGFA, LI XIANG, OUYANG WEINIAN, ZHANG JIANWEN, SHI GANG, ZHOU JIANQIAO
Принадлежит:

The invention discloses a series-parallel flexible interconnection switch power flow regulation optimization method and device, and the method comprises the steps: converting a series-parallel flexible interconnection switch power flow regulation optimization problem into a problem of finding a minimum coverage circle capable of covering all target points on a known target point plane; taking output voltage alternating current components of all given half-bridge type sub-modules connected with a balanced feeder line as target points, and solving a minimum coverage circle of all the target points; the phasor pointing to the center of the minimum coverage circle from the original point is the output voltage alternating current component of the half-bridge type sub-module with the optimal modulation degree of the power flow regulation module and connected with the balance feeder line, and the modulation degree utilization in the PFCM is improved, so that the power flow regulation range of ...

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Номер записи: 20