A method and system for determining an equivalent model of a new energy station
An equivalent model and new energy technology, applied in the field of value model, to ensure the simulation efficiency and improve the power grid simulation accuracy.
Active Publication Date: 2022-02-22
CHINA ELECTRIC POWER RES INST
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Problems solved by technology
[0005] The present invention proposes a method and system for determining the equivalent model of a new energy station to solve the problem of how to accurately determine the equivalent model of a new energy station
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[0056] 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.
[0057] 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 and system for determining an equivalent model of a new energy station, comprising: obtaining a first equivalent model of a new energy station; based on the first equivalent model of a new energy station, performing a target new energy station The construction of the equivalent model of the station determines the equivalent model of the second new energy station; when the number of the first equivalent unit considering the power distribution characteristics is the first preset threshold, determine the power allocation of each first equivalent unit value; when the number of second equivalent units considering the voltage distribution characteristics is the first preset threshold, carry out the far and near grouping of the second equivalent units, and determine the impedance of each second equivalent unit; according to the target new energy According to the operating data of the station, the operating parameter values of the equivalent unit and the equivalent transformer in the equivalent model of the second new energy station are determined, and the second new energy is calculated based on the power distribution value, impedance and operating parameter values. The parameters of the station equivalent model are configured to obtain the final new energy station equivalent model.
Description
technical field [0001] The present invention relates to the technical field of power systems, and more specifically, to a method and system for determining an equivalent model of a new energy station. Background technique [0002] In recent years, new energy sources such as wind power and photovoltaics have grown rapidly, and the vision of "carbon peaking and carbon neutrality" has put forward higher requirements for the safety and operation stability of the power system. In the planning and operation stages, it is more dependent on simulation accuracy. Different from the traditional power system dominated by synchronous machines, new energy stations dominated by wind power and photovoltaics have the characteristics of decentralization, weak support, weak immunity and low inertia, which bring challenges to power system simulation. In terms of simulation scale, in order to consider a large number of small power supplies with low voltage levels, the number of dynamic componen...
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IPC IPC(8): G06F30/20G06Q50/06G06F113/04
CPCG06F30/20G06Q50/06G06F2113/04Y02E40/70Y04S10/50
Inventor 孙华东李佳豪郭强李文锋贾媛王晖杨超魏巍张健陶向宇艾东平马世俊
Owner CHINA ELECTRIC POWER RES INST