Method for determining capacity of energy storage device for new energy support machine and new energy support machine
An energy storage device, new energy technology, applied in circuit devices, AC network load balancing, reducing/preventing power oscillation, etc. The effect of large numbers
Active Publication Date: 2022-02-22
CHINA ELECTRIC POWER RES INST
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Problems solved by technology
[0005] Aiming at the deficiencies of the prior art, the present invention provides a method for determining the capacity of an energy storage device for a new energy support machine, a device and a new energy support machine, aiming to solve the problem of insufficient adjustment capacity of the current new energy station
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[0046] Exemplary embodiments of the present invention will now be described with reference to the drawings; however, the present invention may be embodied in many different forms and are not limited to the embodiments described herein, which are provided for the purpose of exhaustively and completely disclosing the present invention. invention and fully convey the scope of the invention to those skilled in the art. The terms used in the exemplary embodiments shown in the drawings do not limit the present invention. In the figures, the same units / elements are given the same reference numerals.
[0047] Unless otherwise stated, the terms (including scientific and technical terms) used herein have the meanings commonly understood by those skilled in the art. In addition, it can be understood that terms defined by commonly used dictionaries should be understood to have consistent meanings in the context of their related fields, and should not be understood as idealized or overly ...
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The invention discloses a method for determining the capacity of an energy storage device for a new energy supporting machine and a new energy supporting machine. The method includes: determining the duration for which the rotor of the doubly-fed asynchronous motor participates in regulation; determining the slip rate when the rotor of the doubly-fed asynchronous motor participates in the regulation; The slip rate during adjustment and the duration of the rotor participating in the adjustment determine the capacity of the energy storage device. The method is intuitive, has a small amount of calculation, and the determined capacity value is larger and more reliable, so the engineering practicability is stronger. And configuring the electrochemical energy storage device of this capacity in the new energy support machine can improve the regulation ability of the new energy station.
Description
technical field [0001] The invention belongs to the technical field of power system operation and control, and in particular relates to a method and device for determining the capacity of an energy storage device for a new energy supporting machine and a new energy supporting machine. Background technique [0002] The construction of my country's power grid is complex, AC and DC, multi-DC, and sending and receiving terminals affect each other, the operating characteristics of the power grid are complex, and the control difficulty is increasing. The simulation of large power grids is facing severe challenges. At the same time, in the grid with a high proportion of new energy, the characteristics of new energy are very obvious, and the safety of new energy grid connection is very serious, especially in the UHV DC transmission end near-area grid, the proportion of new energy collection is high, and the clustering is obvious. The problems of voltage, inertia and primary frequenc...
Claims
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IPC IPC(8): H02J3/00H02J3/28H02J3/24H02J3/38
CPCH02J3/00H02J3/28H02J3/241H02J3/381H02J2203/20H02J2300/20H02J15/007H02P9/007
Inventor 孙华东张健李文锋魏巍李志强王晖艾东平贾媛孙航宇
Owner CHINA ELECTRIC POWER RES INST