Power grid frequency situation on-line forecast method considering wind power and demand-side response

A demand-side response and power grid frequency technology, applied in wind power generation, power transmission AC network, circuit devices, etc., can solve the problems of weak power system frequency prediction ability and low power grid frequency situation prediction accuracy, and improve power system frequency prediction The ability to improve the effect of precision
CN107968441AInactive Publication Date: 2018-04-27CENT CHINA BRANCH OF STATE GRID CORP OF CHINA +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CENT CHINA BRANCH OF STATE GRID CORP OF CHINA
Publication Date
2018-04-27
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a power grid frequency situation on-line forecast method considering wind power and demand-side response. According to the method, the development effects of a thermal power generation unit, a wind power generation unit and demand-side response in the frequency response process of a system are comprehensively considered, a power grid frequency situation forecast polymerization model for frequency modulation by the thermal power generation unit, the wind power generation unit and the demand-side response in a combination way is built by on-line acquisition of equipmentinformation and running state information of the thermal power generation unit and the wind power generation unit in a power system, parameter setting is performed, and finally, a power grid frequencysituation on-line forecast result under a corresponding running working condition is obtained by simulation calculation on the built power grid frequency situation forecast polymerization model or according to a time domain expression obtained by deviation of the power grid frequency situation forecast polymerization model. By the design, the power grid frequency situation forecast accuracy is improved, and moreover, the frequency forecast capability of the power system is improved.
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Description

technical field

[0001] The invention relates to the technical field of power system situation awareness and trend prediction, in particular to an online grid frequency situation prediction method considering wind power and demand side response, which is mainly applicable to improving the power grid frequency situation prediction accuracy and power system frequency prediction capability. Background technique

[0002] In recent years, the penetration rate of wind power in the power grid is increasing year by year, and the impact of large-scale wind power access on the stability of the power grid is becoming more and more obvious. Traditional research believes that wind turbines are mostly controlled by power electronic equipment, and are decoupled from the power grid with power electronic converters, so they do not affect the frequency change of the system, and because wind turbines do not show inertia like traditional thermal power plants, Therefore, with the increase of wind...

Claims

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