Method and device for checking stability of photovoltaic power generation system
A photovoltaic power generation system and stability technology, applied in photovoltaic system monitoring, photovoltaic power generation, photovoltaic modules and other directions, can solve problems such as endangering system security, cascading failures of large power grids, and not considering load fluctuations in the power grid, and achieve accurate improvement. performance, improve stability
Active Publication Date: 2017-04-12
STATE GRID CORP OF CHINA +2
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[0006] The main purpose of the present invention is to provide a method and device for verifying the stability of a photovoltaic power generation system, so as to solve the problem that the fluctuation of the load in the power grid is not considered in the verification method of the stability of the photovoltaic power generation system in the related art, which may easily cause a large power grid. Problems where failures compromise system security
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[0022] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0023] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is an embodiment of a part of the application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.
[0024] It should be noted that the terms "first" and "second" in ...
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The invention discloses a photovoltaic power generation system stability verification method and an apparatus. The method comprises the following steps: acquiring current operation data of a load in a photovoltaic power generation system; according to the current operation data, determining capacity configuration scopes of a plurality of units in the photovoltaic power generation system, wherein the plurality of units comprises a photovoltaic power generation unit, an energy storage unit and a controllable micro power supply unit; according to the capacity configuration scopes, determining verification sample data, wherein the verification sample data is used for carrying out stability verification on the photovoltaic power generation system; according to the verification sample data, carrying out the stability verification on the photovoltaic power generation system. In the photovoltaic power generation system stability verification method of the related technology, volatility of the load in a power grid is not considered so that cascading failures of a large power grid are easy to generate and system safety is endangered. By using the method and the apparatus in the invention, the above problem is solved.
Description
technical field [0001] The invention relates to the field of photovoltaic power generation, in particular to a method and device for checking the stability of a photovoltaic power generation system. Background technique [0002] Data Mining (DM for short) selects, explores, and models large amounts of data to discover rules and connections that are unknown in advance. The essence of data mining is to apply appropriate algorithms and extraction rules to the preprocessed data to obtain the knowledge hidden behind the data. The decision tree algorithm is a typical high-dimensional data mining tool. Scholars have widely used the CART (Classification And Regression Tree) algorithm, which can evaluate the safety and stability of the power grid to summarize the safe operation rules of the system. The industry standard DL755-2001 divides power system stability into three categories: power angle stability, frequency stability, and voltage stability, according to the dynamic process ...
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IPC IPC(8): H02S50/00
CPCH02S50/00Y02E10/50
Inventor 张帆李伟黄奕任宝利宋宝同宝海龙赵悦张宏宇苏宁贾欧莎张磊张杰超王方敏
Owner STATE GRID CORP OF CHINA