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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 6. Отображено 6.
26-05-2023 дата публикации

Converter harmonic suppression method and device and electronic equipment

Номер: CN116169865A
Автор: HAO YAN, ZHANG JUNJIE, DING YINGMING, ZHANG KEGONG, CAI ANMIN, GUO CHEN
Принадлежит:

The invention discloses a converter harmonic suppression method and device and electronic equipment. The method comprises the following steps: acquiring current given values of a d axis and a q axis of a rotor of a converter; collecting current feedback values of a d axis and a q axis of a rotor of the converter; acquiring a current difference value according to the current given value and the current feedback value; and respectively inputting the current difference values into a harmonic suppression controller, and carrying out harmonic elimination on the current difference values by the harmonic suppression controller so as to output voltage given values of the d axis and the q axis of the rotor. Therefore, harmonic elimination can be carried out on the current difference value through the harmonic controller, the adaptability and the stability of a converter power grid are improved, and suppression of different harmonic components can be realized by changing the frequency value of the ...

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Номер записи: 1
29-08-2023 дата публикации

Large megawatt wind turbine generator gearbox adaptive state monitoring system and method

Номер: CN116659848A
Автор: LIN XUEFENG, HAO YAN, DING YINGMING, ZHANG KEGONG, LI CHENGCHANG, HAO XIAOHUI, CAI ANMIN, JIAO CHONG, ZHANG JUNJIE
Принадлежит:

The invention belongs to the field of wind power generation, and particularly discloses a large megawatt wind turbine generator gearbox self-adaptive state monitoring system and method. Vibration, oil liquid, temperature and video multiple parameters are monitored, set working condition information is collected, a corresponding relation database is established for the working condition information and vibration monitoring and temperature monitoring data, and a large megawatt wind turbine generator gearbox self-adaptive state monitoring system is established. Training a database through monitoring data obtained through normal operation of a unit to obtain a normal range of each monitoring data; according to monitoring data collected by a data acquisition system, the monitoring data are sent to a monitoring server, whether the monitoring data exceed a normal range is judged, a monitoring result is output, the monitoring result is sent to a remote monitoring center, and monitoring indexes ...

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Номер записи: 2
11-04-2023 дата публикации

Method and device for extracting positive sequence component and negative sequence component of fundamental wave

Номер: CN115951118A
Автор: ZHANG JUNJIE, HAO YAN, DING YINGMING, ZHANG KEGONG, LI CHENGCHANG, HAO XIAOHUI, BAI XINKUI, CAI ANMIN, LI GONGBIN, YANG LIPING
Принадлежит:

The invention discloses a method and a device for extracting a positive sequence component and a negative sequence component of a fundamental wave. The method comprises the following steps: setting a preset value of collection times according to different power grid environments, collecting a three-phase electric signal at the current moment to perform coordinate system transformation, storing a transformation result, and when the collection times are equal to the preset value, listing an equation capable of obtaining a positive sequence component and a negative sequence component of a fundamental wave of the electric signal according to the transformation result and solving the equation. In consideration of various power grid environments, the positive sequence component and the negative sequence component of the fundamental wave can be extracted for the power grid environments of different areas by changing the value of the collection times, the larger the preset value is, the smaller ...

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Номер записи: 3
08-08-2023 дата публикации

Method and device for monitoring running state of generator

Номер: CN116559658A
Автор: ZHANG JUNJIE, HAO YAN, DING YINGMING, ZHANG KEGONG, CAI ANMIN, GUO CHEN, WU TONG, JIAO CHONG, YANG LIPING, YANG HAO
Принадлежит:

The invention provides a running state monitoring method and device of a generator, and relates to the technical field of data processing. The method comprises the following steps: acquiring electrical parameters and reference power parameters of a generator, and establishing a coordinate system by taking a reactive power per unit value as a transverse coordinate axis and an active power per unit value as a longitudinal coordinate axis; determining candidate power ranges corresponding to the running states of the wind turbine generator in the coordinate system according to the reference power parameters, wherein the running states correspond to the candidate power ranges one by one; obtaining a power running track according to the electric parameters of the generator, and determining a target power range from the candidate power ranges according to the position of the power running track; and taking the operation state of the target power range as the current operation state of the wind ...

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Номер записи: 4
25-07-2023 дата публикации

Wind turbine generator monitoring method and device, electronic equipment and storage medium

Номер: CN116488346A
Автор: ZHANG JUNJIE, HAO YAN, DING YINGMING, ZHANG KEGONG, LI CHENGCHANG, HAO XIAOHUI, BAI XINKUI, CAI ANMIN, GUO CHEN, YANG LIPING, YANG HAO, XIE XINHUA
Принадлежит:

The invention provides a wind turbine generator monitoring method and device, electronic equipment and a storage medium, and relates to the technical field of wind turbine generator monitoring, and the method comprises the steps: determining a first alarm region of a monitoring coordinate system based on a reactive power adjustment limit value and an active power adjustment limit value of a wind turbine generator, determining a second alarm area of the monitoring coordinate system based on the output voltage peak value of the wind turbine generator converter and the reference voltage of the grid-side converter; determining a power operation point of the wind turbine generator in the monitoring coordinate system based on the active power and the reactive power of the wind turbine generator; and performing alarm monitoring on the wind turbine generator based on the positions of the power operation point relative to the second alarm area and the first alarm area. According to the method, the ...

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Номер записи: 5
30-06-2023 дата публикации

Actual power grid broadband oscillation modeling method and device, electronic equipment and storage medium

Номер: CN116365516A
Автор: ZHANG JUNJIE, HAO YAN, DING YINGMING, ZHANG KEGONG, CAI ANMIN, GUO CHEN, WU TONG, JIAO CHONG, YANG LIPING, YANG HAO
Принадлежит:

The invention provides an actual power grid broadband oscillation modeling method and device, electronic equipment and a storage medium. The method comprises the steps that actual power grid data containing broadband oscillation components obtained through sampling of sampling equipment are acquired; converting the format of the actual power grid data into a set format which can be read by a data reading element; and applying a voltage signal in the actual power grid data in the set format read by the data reading element to a voltage source so as to simulate an actual power grid. Therefore, the method can enlarge the application range of PSCAD/EMTDC simulation software, so that the PSCAD/EMTDC simulation software can simulate the actual power grid environment, and a foundation is laid for researching the control strategy and adaptability of the wind turbine generator under the condition of broadband oscillation of the power grid.

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Номер записи: 6