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A practical equivalent method and device for new energy station-level modeling

An equivalent method, a new energy technology, applied in circuit devices, design optimization/simulation, special data processing applications, etc., can solve problems such as errors

Active Publication Date: 2022-02-08
CHINA ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, in the simulation calculation of large power grids or regional power grids, the electromechanical and electromagnetic transient simulations generally adopt the latter method of single-machine multiplication to improve simulation efficiency and convergence, but this ignores the collector line parameters and parameters in new energy stations. Due to the influence of wind speed, there will be some error

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  • A practical equivalent method and device for new energy station-level modeling
  • A practical equivalent method and device for new energy station-level modeling
  • A practical equivalent method and device for new energy station-level modeling

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Embodiment Construction

[0048] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the application. However, the present application can be implemented in many other ways different from those described here, and those skilled in the art can make similar promotions without violating the connotation of the present application. Therefore, the present application is not limited by the specific implementation disclosed below.

[0049] figure 1 It is a schematic flow chart of a new energy station-level modeling practical equivalent method provided by the embodiment of this application. The following combines figure 1 The method provided in the present application is described in detail.

[0050] Step S101, determine the composition structure of the equivalent unit of the new energy station.

[0051] figure 2 It is a schematic diagram of the equivalent value of the new energy station-level modeling structure based on impedance and power d...

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Abstract

The invention discloses a practical equivalent method for new energy station-level modeling, including: determining the composition of the equivalent structure of the new energy station; determining the new energy station according to the impedance distribution and power distribution in the equivalent structure The number of equivalent units in the equivalent model of the station; according to the number of equivalent units, an equivalent model of the new energy station including the static var compensation device and the equivalent unit is constructed. Under the premise of ensuring the scale and speed of power grid simulation, it can more accurately and truly reflect the response characteristics of new energy stations. Solve the demand for simulation analysis on the equivalent model of new energy stations.

Description

technical field [0001] This application relates to the field of electric power systems, in particular to a practical equivalent method and device for new energy station-level modeling. Background technique [0002] New energy power plants generally contain a large number of units, the order of the model is high, and the nonlinear characteristics are serious. Therefore, establishing a detailed model of the wind / photovoltaic power plant for analysis will lead to the problem of non-convergence in stability calculations. Therefore, it is necessary to simplify the complex structure of the new energy power plant into a stand-alone or Multi-machine model, the equivalent calculation of each operating parameter. [0003] In the research of new energy grid-connected problems, there are two main types of equivalent modeling methods for new energy stations: one is the detailed model, which is a full simulation model composed of each generator set model, transmission lines and transforme...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20H02J3/38
CPCG06F30/20H02J3/381H02J2203/20
Inventor 李文锋孙华东李佳豪贾媛魏巍张健陶向宇艾东平王晖杨超马世俊赵旭峰
Owner CHINA ELECTRIC POWER RES INST
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