Online prediction method for power grid frequency situation based on multi-resource joint frequency modulation

A technology of power grid frequency and prediction method, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve problems such as insufficient comprehensiveness and complex system power supply composition, and achieve the effect of improving accuracy

Inactive Publication Date: 2019-05-10
STATE GRID GASU ELECTRIC POWER RES INST +3
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Problems solved by technology

[0004] It can be seen that the traditional system frequency response model only considers the frequency modulation effect of thermal power units. After renewable energy is connected to the grid, the composition of the system power supply is complex. This model will not be comprehensive enough in the online prediction of the grid frequency situation

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  • Online prediction method for power grid frequency situation based on multi-resource joint frequency modulation
  • Online prediction method for power grid frequency situation based on multi-resource joint frequency modulation
  • Online prediction method for power grid frequency situation based on multi-resource joint frequency modulation

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Embodiment Construction

[0036] An online prediction method of power grid frequency situation considering joint frequency regulation of solar thermal-thermal-demand side response, comprising the following steps:

[0037] (1) Real-time monitoring of the operating status of the power grid to determine whether there is a power shortage in the power grid;

[0038] (2) If there is no power shortage in the grid, then return to step (1) to continue monitoring; if a power shortage occurs in the grid, then enter step (3);

[0039] (3) Collect the operating status data of the power grid and unit equipment information;

[0040] (4) Establish a frequency situation prediction aggregation model based on the traditional system frequency response (SFR), which adds the equivalent governor model of the solar thermal generator and the equivalent frequency modulation model of the demand side response;

[0041] (5) Set the parameters in the aggregation model according to the power shortage value of the power grid and the...

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Abstract

Aiming at the influence of a photothermal power station on the frequency characteristics of the surrounding power grids after accessing a regional power grid, the patent proposes an online predictionmethod for a power grid frequency situation considering thermal power, photothermal and demand-side response joint frequency modulation according to a governor model of a photothermal generator. The method comprehensively considers the functions of thermal power units, photothermal units and demand-side responses in the system frequency response (SFR) process, and establishes an aggregation modelfor the joint frequency modulation of the thermal power units, the photothermal units and the demand-side responses by online collecting operation state data of power grids and equipment information of the units. The aggregation model characterizes the process that the thermal power units, the photothermal units and the demand-side responses participate in frequency modulation in the form of transfer functions. Compared with an existing method, the method adds the frequency modulation functions of the photothermal unit governor and the demand-side responses on the basis of a traditional systemfrequency response model, can perform online prediction on the power grid frequency situation, and can improve the prediction capability of the power grids to the system frequency.

Description

technical field [0001] The invention relates to an online prediction method of power grid frequency situation considering joint frequency modulation of solar thermal-thermal-demand side response, and belongs to the technical field of power system situation awareness and trend prediction. Background technique [0002] With the rapid development of social productivity, the increasing pressure of energy crisis and environmental pollution has prompted countries to increase research on clean energy. Photovoltaic power generation technology, solar thermal power generation has regulation characteristics comparable to conventional thermal power units, and has become a research hotspot among scholars at home and abroad in recent years. According to the forecast of the China Renewable Energy Society, my country's solar thermal power generation capacity may reach 30GW in 2030, and may reach 180GW in 2050. Solar thermal power generation technology is expected to become one of the main r...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/24G01N21/84G01R31/00G01R31/08
Inventor 邵冲张柏林智勇拜润卿郝如海陈仕彬刘文飞张彦凯邢延东史玉杰高磊乾维江祁莹张海龙崔力心郭文科牛浩明周治伊王永年刘巍陈力何欣
Owner STATE GRID GASU ELECTRIC POWER RES INST
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