Настройки

Укажите год
-

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

Подробнее
-

Мониторинг СМИ

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

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год
Применить Всего найдено 13. Отображено 13.
26-01-2011 дата публикации

Setting algorithm of parameters of power system stabilizer

Номер: CN0101447670B
Автор: CHAO HUI, LIU ZENGHUANG, HE FENGJUN, PU JUN, ZHU FANG, ZHAO HONGGUANG, LI WENFENG, HUI CHAO, ZENGHUANG LIU, FENGJUN HE, FANG ZHU, HONGGUANG ZHAO, WENFENG LI
Принадлежит:

The invention discloses a setting algorithm of parameters of a power system stabilizer. In the algorithm, an all-frequency band optimization algorithm and a specific frequency band optimization algorithm are adopted, and setting of the common parameters of the power system stabilizer including PSS1A, PSS2A, PSS2B and H infinity types can be performed. The method can be adapted to change of a power grid operation mode, and can have a good suppression action on both wider frequency oscillation and specific frequency oscillation. The method is applied to setting the parameters of the power system stabilizer, thus the power system stabilizer can give full play to improving dynamic stability of the power grid and preventing low-frequency oscillation.

Подробнее
Номер записи: 1
07-04-2023 дата публикации

Modeling method and device of electromechanical transient six-order mathematical model for distributed phase modifier

Номер: CN115935879A
Автор: DONG YU, XIAO YANG, ZHANG YI, LI ZHIQIANG, XIA CHAO, PU JUN, WANG DONGYANG, HUO CHENGXIANG, CAO ZHIWEI, WU CHAOQIANG, LI WENFENG, HE FENGJUN, YU DAHAI
Принадлежит:

The invention discloses a modeling method and device for an electromechanical transient six-order mathematical model of a distributed phase modifier, and the method comprises the steps: obtaining a q-axis rotor winding voltage equation, q-axis excitation winding current and damping winding current according to a Park equation, d-axis transient electromotive force and subtransient electromotive force of a double-axis excitation generator; obtaining a differential equation of a q-axis rotor winding according to a traditional generator model and a q-axis rotor winding voltage equation; substituting the q-axis transient reactance and the secondary electric reactance into a differential equation of a q-axis rotor winding to obtain a first equation of a q-axis state variable; acquiring a q-axis damping winding voltage equation and a damping winding resistance; obtaining a differential equation of the q-axis damping winding according to the q-axis damping winding resistance and the q-axis damping ...

Подробнее
Номер записи: 2
23-09-2015 дата публикации

Multi-FACTS-damping-controller interaction risk analysis method

Номер: CN104934961A
Автор: GAO LEI, CHU XIAOJIE, AI DONGPING, HE FENGJUN, TANG YONG, GUO JIANBO
Принадлежит:

The present invention provides a multi-FACTS-damping-controller interaction risk analysis method which comprises the steps of (1) optionally selecting two FACTS damping controllers in a power system and calculating the equivalent open loop transfer functions of the FACTS damping controllers respectively, (2) calculating the impact factor between the two FACTS damping controllers, (3) calculating the interaction risk factor between the two FACTS damping controllers, (4) analyzing the risk of the interaction between the two FACTS damping controllers according to the interaction risk factor, and (5) repeating steps of (1) to (4) and completing the risk analysis of the interaction between all FACTS damping controllers as the research object in the power system. The method provided by the invention has the function that the interaction risk between the FACTS damping controllers can be predicted in advance, the possible negative interaction between the multiple FACTS controllers is avoided, the ...

Подробнее
Номер записи: 3
23-09-2015 дата публикации

Multi-FACTS-damping-controller interaction analysis method

Номер: CN104934962A
Автор: GAO LEI, CHU XIAOJIE, AI DONGPING, HE FENGJUN, TANG YONG, GUO JIANBO
Принадлежит:

The present invention relates to a multi-FACTS-damping-controller interaction diagram analysis method based on a spectral radius function. The method comprises the following steps of (1) calculating the equivalent open loop transfer function of each FACTS damping controller as a research object in a power system, (2) calculating a FACTS damping controller spectral radius function matrix, (3) drawing a spectral radius function curve according to the spectral radius function matrix calculated in step (2), and (4) judging the interaction between FACTS damping controllers according to the spectral radius function curve. According to the method, the multi-FACTS-damping-controller interaction can be analyzed, the analysis result of the multi-FACTS-damping-controller interaction is intuitively given by using a diagram method, the possible negative interaction between multiple FACTS controllers is avoided, the system safety and stability hidden trouble is eliminated, and the system safety and stability ...

Подробнее
Номер записи: 4
25-03-2015 дата публикации

Extraction method of asterina pectinifera extract and application of extract in preparing anti-tumor medicines

Номер: CN104434983A
Автор: CHEN GANG, PEI YUEHU, WANG HAIFENG, HE FENGJUN, BAI JIAO
Принадлежит:

The invention belongs to the technical field of medicines and relates to an application of an asterina pectinifera extract in preparation of anti-tumor medicines and health foods. The extract is a dried asterina pectinifera whole body and is obtained by 75% ethanol extraction and elution and purification by macroporous resin. The extract obtained by the invention has relatively strong antitumor activity in vitro and can be used for preparing anti-tumor medicines and health foods with antitumor activity, such as anti-colon cancer medicines and the like.

Подробнее
Номер записи: 5
13-04-2021 дата публикации

Raw material impurity removing device for biopharmaceuticals

Номер: CN212943894U
Автор: HE FENGJUN, 贺凤军
Принадлежит: HE FENGJUN, 贺凤军

The utility model relates to the technical field of biopharmaceuticals, in particular to a biopharmaceutical raw material impurity removing device which comprises a first pipeline, a second pipeline and a third pipeline, the first pipeline, the second pipeline and the third pipeline are fixedly connected through three sets of fixing frames, and rolling wheels are installed on the bottom wall of the third pipeline. Conveying belts are installed in the first pipeline, the second pipeline and the third pipeline, material grooves are further formed in one side of the interior of the second pipeline and one side of the interior of the third pipeline respectively, a first connecting pipe is welded between the first pipeline and the second pipeline, and a first screen is welded to one side of the interior of the lower surface of the first connecting pipe. Compared with the prior art, the raw material screening device is simple in structure and convenient to operate, and the raw material screening ...

Подробнее
Номер записи: 6
03-06-2009 дата публикации

Setting algorithm of parameters of power system stabilizer

Номер: CN0101447670A
Автор: LI WENFENG, LIU ZENGHUANG, ZHU FANG, HE FENGJUN, PU JUN, CHAO HUI, ZHAO HONGGUANG, WENFENG LI, ZENGHUANG LIU, FANG ZHU, FENGJUN HE, HUI CHAO, HONGGUANG ZHAO
Принадлежит:

The invention discloses a setting algorithm of parameters of a power system stabilizer. In the algorithm, an all-frequency band optimization algorithm and a specific frequency band optimization algorithm are adopted, and setting of the common parameters of the power system stabilizer including PSS1A, PSS2A, PSS2B and H infinity types can be performed. The method can be adapted to change of a power grid operation mode, and can have a good suppression action on both wider frequency oscillation and specific frequency oscillation. The method is applied to setting the parameters of the power system stabilizer, thus the power system stabilizer can give full play to improving dynamic stability of the power grid and preventing low-frequency oscillation.

Подробнее
Номер записи: 7
02-07-2014 дата публикации

Energy storage type heat pump system

Номер: CN103900175A
Автор: HE FENGJUN, SHI LEI, JIN LEI
Принадлежит:

The invention belongs to the technical field of heat pump systems, in particular to an energy storage type heat pump system. The energy storage type heat pump system solves the technical problems in the prior art and comprises a heat source heat exchange mechanism, wherein an ice storage device and a heat pump host connected with the ice storage device are connected to the heat source heat exchange mechanism, a chilled water circulation subsystem and a water cooling circulation subsystem are connected to the heat pump host, and an air conditioning terminal mechanism is connected to the chilled water circulation subsystem. The energy storage type heat pump system further comprises a cooling water circulation subsystem which is connected with the heat pump host and the ice storage device, wherein a heat exchange device is arranged between the chilled water circulation subsystem and the cooling water circulation subsystem. The energy storage type heat pump system has the advantages of being ...

Подробнее
Номер записи: 8
07-04-2023 дата публикации

Automatic voltage control method and system suitable for transformer substation

Номер: CN115940167A
Автор: XIAO YANG, XIAO MING, TANG LEI, LI ZHIQIANG, SONG RUI, XIA CHAO, CHEN CHUNMENG, PU JUN, YANG JUN, MA YONGFEI, HUO CHENGXIANG, LI XUANXUAN, WANG DONGYANG, LIANG YING, LI WENFENG, HE FENGJUN, CHENG LIN, TAO XIANGYU, WANG GUANHONG, LO GUO-QIANG, MA SHIJUN, WU CHAOQIANG, GAN JIATIAN, LI HEWEN, YU DAHAI, LUO MIN, HUANG XING, YANG WENLI, MA XIAOGUANG, ZHAO DONGNING, ZHAO XUFENG, DING YUJIE
Принадлежит:

The invention discloses an automatic voltage control method and system suitable for a transformer substation, and belongs to the technical field of automatic voltage control. The method comprises the following steps: setting a data acquisition period of an automatic voltage control system of the transformer substation and a control period of automatic voltage; when the data acquisition cycle of the transformer substation arrives, reading the bus voltage of the transformer substation; and when the control cycle of the transformer substation arrives, judging whether the bus voltage is out of limit, if so, determining an out-of-limit elimination strategy, and eliminating the voltage out-of-limit through the out-of-limit strategy. The method can ensure that the equipment acts in time to eliminate voltage out-of-limit when the equipment is out-of-limit, can effectively reduce the action times of the voltage regulation equipment in the transformer substation, prolongs the action interval of the ...

Подробнее
Номер записи: 9
23-07-2014 дата публикации

Thermocline-free cool storage device

Номер: CN103940167A
Автор: HE FENGJUN, SHI LEI, JIN LEI
Принадлежит:

The invention belongs to the technical field of cool storage devices and particularly relates to a thermocline-free cool storage device which solves the problems that a thermocline of an existing cool storage device influences the effective volume for cool storage and the like. The thermocline-free cool storage device comprises a cool storage tank with a cavity. A first bag and a second bag are arranged in the cool storage tank. The whole cavity is filled with the first bag and the second bag. A cool storage liquid filling and releasing control mechanism is arranged between the first bag and the second bag and can enable cool storage liquid in the first bag to be injected into the second bag so as to control the first bag to shrink and the second bag to expand and enable cool storage liquid in the second bag to be injected into the first bag so as to control the second bag to shrink and the first bag to expand. The cool storage liquid filling and releasing control mechanism is connected ...

Подробнее
Номер записи: 10
04-07-2023 дата публикации

Industrial explosive workshop on-site fire point temperature measurement system based on thermal imaging technology

Номер: CN116380253A
Автор: DANG CHUANGGANG, WEI ZHOUHUA, WANG QINGHUA, WANG SHIHAO, LUO RONG, XUE XIONGGANG, LI CHUNGUANG, CAO LI, MO CHAOFENG, WANG HAIYAN, HE FENGJUN, TANG WENTONG, HAN YIBIN, ZHAO ZHIGANG, YAO RUYI, HAO BEIBIN, LIU TAO, DUAN WEILONG, GUAN CHAO, LI TIANZI
Принадлежит:

The invention discloses an industrial explosive workshop on-site fire point temperature measurement system based on a thermal imaging technology. The whole system is divided into three parts, namely a front-end probe, intermediate transmission equipment and a background workstation, the front-end probe part is equivalent to eyes of the whole system and consists of a cluster of explosion-proof dual-spectrum infrared cameras; the intermediate transmission equipment is equivalent to a blood vessel of the whole system and consists of an optical transceiver, an optical fiber and a multi-path optical fiber adapter; and the workstation is equivalent to the heart of the whole system and consists of a server, a database, a front-end working display and a PJ45 network cable channel. The explosion-proof dual-spectrum thermal imaging camera is adopted, the safety production requirement of the civil explosion industry is met, the digital temperature value of each pixel point of a measured target can ...

Подробнее
Номер записи: 11
07-07-2023 дата публикации

System and method for counting fixed number of personnel in industrial explosive production workshop in civil explosive industry

Номер: CN116403323A
Автор: WEI ZHOUHUA, DANG CHUANGGANG, WANG QINGHUA, WANG SHIHAO, LUO RONG, XUE XIONGGANG, LIU YA, CAO LI, WANG YOUWEI, WANG HAIYAN, HE FENGJUN, TANG WENTONG, HAN YIBIN, ZHAO ZHIGANG, YAO RUYI, HAO BEIBIN, LIU TAO, DUAN WEILONG, GUAN CHAO, LI TIANZI
Принадлежит:

The invention discloses a personnel-fixed counting system for an industrial explosive production workshop in the civil explosive industry, which comprises an information identification unit, an information judgment unit, an alarm unit and a display unit, and is characterized in that the output end of the information identification unit is provided with the information judgment unit, and the output end of the information judgment unit is provided with the alarm unit; the output end of the alarm unit is provided with a display unit. The information identification unit comprises a camera for judging an entering event, a camera for judging an exiting event, an RFID (Radio Frequency Identification Device) 1 reader-writer and an RFID 2 reader-writer, the alarm unit comprises a sound post, and the display unit comprises a display screen; and the camera for judging the entering event, the camera for judging the exiting event, the RFID 1 reader-writer, the RFID 2 reader-writer, the sound post and ...

Подробнее
Номер записи: 12
28-01-2015 дата публикации

Nuclear power unit excitation and PSS parameter optimization setting method enhancing system damping

Номер: CN104319795A
Автор: HUANG WENYING, SONG SHAOQUN, CHEN FENG, WANG GUANHONG, YANG GUIZHONG, JIANG WEI, ZHANG YONGSHU, HE FENGJUN, LI JING, TANG XIAOJUN, YU DAHAI, LI KEWEN, YU XIUYUE
Принадлежит:

The invention relates to a nuclear power unit excitation and PSS parameter optimization setting method enhancing system damping. The method integrates digital-analog hybrid simulation and an on-site test method. Firstly, by means of digital-analog hybrid simulation, frequency domain eigenvalue analysis and time domain disturbance simulation are carried out on a simulation grid, dynamic invariant features and important oscillation information between interconnected network areas are extracted, weight sequencing is carried out on the unit by means of a participation matrix and PF module value, and unit excitation and PSS parameter optimization research is carried out on the nuclear power unit with the largest participation factor; by means of sensitivity analysis, main optimization parameters of an engine excitation system are determined, an optimization interval suitable for AVR and PSS parameters is determined by carrying out simulation research in multiple operation modes, and finally, ...

Подробнее
Номер записи: 13