System and method of predicting wind power plant output power climbing event

A technology of output power and wind power, which is applied in the system field of wind farm output electric power ramp event prediction, and can solve the problem that the comprehensiveness and accuracy of wind power ramp event prediction cannot be satisfied at the same time

Inactive Publication Date: 2016-12-07
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to solve the problem that the comprehensiveness and accuracy of the wind power climbing event prediction in the prior art cannot be satisfied at the same time

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  • System and method of predicting wind power plant output power climbing event
  • System and method of predicting wind power plant output power climbing event
  • System and method of predicting wind power plant output power climbing event

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Embodiment Construction

[0064] The present invention provides a method and system for predicting a ramp event of output power of a wind farm. The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0065] figure 1 It is a system block diagram of a method for predicting a ramp event of a wind farm output electric power proposed by the present invention; the system is composed of four main modules: a data preprocessing module, a wavelet transform module, a sub-signal prediction module and a ramp event judgment module; wherein , the data preprocessing module includes: a data reading module and a climbing sequence calculation module; the wavelet transform module includes: a wavelet decomposition module and a sub-wavelet signal integration module; the sub-signal prediction module includes: a time series prediction module and a resolution conversion module. In this system, the data preprocessing module is used as the input of the wavel...

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Abstract

The invention belongs to the technical field of wind power generation and especially relates to a system and a method of predicting a wind power plant output power climbing event. The system is composed of a data preprocessing module, a wavelet transformation module, a subsignal prediction module and a climbing event determination module. The method comprises steps of based on historical output power data of a wind power plant, calculating a wind power climbing time sequence; decomposing an original wind power climbing sequence using the wavelet transformation technology, and reintegrating decomposed subsignals into a plurality of new subsignals; predicting the new subsignals using a time sequence model; and determining the occurrence of the wind power climbing event based on prediction results of the subsignals. The system of predicting the wind power climbing event can achieve high comprehensiveness and high accuracy of wind power climbing event prediction, is simple in operation, and can provide important reference information for electric power system operation.

Description

technical field [0001] The invention belongs to the technical field of wind power generation and its grid connection, and in particular relates to a system and method for predicting a ramp event of output electric power of a wind farm. Background technique [0002] The role of wind power in the power system is increasing. However, due to the random fluctuation of wind speed, the output power of wind power fluctuates greatly in a short period of time, which is called a wind power ramp event. In a power system with a high proportion of wind power, wind power ramp events have seriously threatened the safe and stable operation of the power system, directly causing economic losses to the power grid, seriously affecting the balance of power generation in the power system, and even causing large-scale blackouts. In order to reduce the impact of wind power ramp events on the stability of the power system and improve the grid-connected characteristics of wind power, timely and accura...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q50/06
CPCG06Q10/04G06Q50/06Y04S10/50
Inventor 刘永前孙莹韩爽李莉
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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