Abandoned wind electric quantity estimation method

A technology for abandoning wind power and wind power, applied in wind power generation, electrical components, circuit devices, etc., can solve problems such as difficulty in peak regulation of power grids and single power supply structure, and achieve the effect of promoting coordinated development

Inactive Publication Date: 2013-08-14
STATE GRID CORP OF CHINA +1
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Problems solved by technology

[0008] The present invention mainly aims at the problem of difficulty in peak regulation in power grids with large wind power grid-connected capacity and single power str

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  • Abandoned wind electric quantity estimation method

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0031] like figure 1 As shown, a method for estimating abandoned wind power includes the following steps:

[0032] 1. Determination of load characteristics and load volume

[0033] (1) According to the statistical maximum load of the existing typical years and the statistical load data stored in the EMS database (a typical year is defined as the year that best represents the regional load characteristics among the years with EMS stored load data), find Get the ratio of each regulated load in a typical year to the maximum regulated load, which is recorded as ratio(j) (j∈[1, M], M is the number of stored load data in a typical year). Assume that in the forecast year (the forecast year is usually within 5 years), the load characteristics of the power grid will not change greatly, that is, at the same time, ratio (k) is the same as ratio (j) (ratio (k) is...

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Abstract

The invention discloses an abandoned wind electric quantity estimation method, which comprises the following steps of: firstly determining load capacity at every calculation moment, determining the starting capacity of a non-wind power generation unit according to a daily maximum load, determining wind power abandoned wind electric power at every moment according to a minimum load and power output characteristics of the non-wind power generation unit and a wind power generation unit, and performing time integration on the abandoned wind electric power to obtain an abandoned wind electric quantity, wherein the calculation moment is defined in a way that a piece of data is stored every several minutes by an expanded memory system (EMS), and a moment corresponding to each piece of stored data is called as the calculation moment. The abandoned wind electric quantity estimation method mainly aims to solve the problem of difficulty in the peak load regulation of power grids with an undiversified power structure in certain regions in China along with the rapid development of wind power generation. According to the method, the abandoned wind electric quantity of wind power generation in the next year can be judged to a certain extent, the wind power generation can be guided to be rationally developed, and the coordinated development of the wind power generation and the power grids can be promoted.

Description

technical field [0001] The invention relates to a method for estimating abandoned wind power. Background technique [0002] Wind energy is a renewable and clean energy. Wind power generation is of great significance to ensure stable energy supply, adjust and optimize energy structure, protect ecological environment, reduce greenhouse gas emissions, and drive economic transformation and industrial upgrading. [1] . [0003] my country is rich in wind energy resources, and high-quality wind resources are mainly distributed in the west, north and coastal areas. In recent years, with the support of various national incentive policies, my country's wind power has achieved rapid development. At the end of 2012, my country's wind power installed capacity was about 63 million kilowatts, becoming the world's largest wind power country. In 2012, the annual wind power generation capacity reached 100.4 billion kWh. [0004] The rapid development of wind power generation has brought hug...

Claims

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Application Information

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IPC IPC(8): H02J3/38H02J3/00
CPCY02E10/763Y02A30/60Y02E10/76
Inventor 刘晓明牛新生朱春萍汪湲张杰肖俊丽
Owner STATE GRID CORP OF CHINA
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