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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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Применить Всего найдено 2. Отображено 2.
29-08-2023 дата публикации

Method and system for evaluating power transmission congestion of power system under new energy access

Номер: CN116667459A
Автор: WANG BIYANG, WANG KANG, LI LI, ZHANG QINGLEI, LI ZIHENG, LUO LEI, QIAO YANJUN, ZHAO YINGJIE, LI YONGFEI, ZHANG YAO
Принадлежит:

The invention discloses a power transmission congestion assessment method for a power system under new energy access. The method comprises the following steps: acquiring basic data of the power system under new energy access; solving a start-stop plan of the thermal power generating unit by a pre-constructed unit combination optimization model considering new energy access; solving the output levels of the thermal power generating unit in the plurality of new energy output scenes by a pre-constructed economic dispatching optimization model considering new energy access; performing direct current load flow calculation to determine the power of each branch of the system in each new energy scene, and calculating and updating a power transmission congestion index according to a pre-constructed power transmission congestion evaluation index system; and outputting the power transmission blocking indexes of the power transmission elements and the system until the power transmission blocking indexes ...

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Номер записи: 1
28-04-2023 дата публикации

Frequency characteristic analysis method and system of wind-fire storage and delivery system under short-circuit fault

Номер: CN116031900A
Автор: LI LI, WANG KANG, WANG JIAMING, ZHANG QINGLEI, WANG TONG, WANG BIYANG, DONG QI, QIAO YANJUN
Принадлежит:

The invention discloses a frequency characteristic analysis method and system for a wind-thermal storage and delivery system under a short-circuit fault, and relates to the technical field of electric power engineering, and the method comprises the steps: obtaining the power change information of the wind-thermal storage and delivery system during the short-circuit fault; on the basis of the data, the active power variable quantity when energy storage is not configured after the short-circuit fault, the active power variable quantity when energy storage is configured after the short-circuit fault, an equivalent inertia time constant, an equivalent damping parameter, a virtual inertia control parameter and a virtual damping control parameter are determined respectively, so that a target time domain expression is determined; according to the target time domain expression, determining an initial frequency change rate and a system frequency maximum value of the wind-thermal storage and delivery ...

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Номер записи: 2