Method and system for evaluating complementarity of regional wind and light resources

A wind-solar complementary and regional technology, applied in the direction of photovoltaic power generation, wind power generation, single-network parallel feed arrangement, etc. Measuring the characteristics of wind-solar complementary resources and other issues

Active Publication Date: 2018-09-04
YUNNAN POWER GRID
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Problems solved by technology

[0005] As mentioned above, the analysis of wind and wind resources carried out separately, although the overall distribution and historical variability of wind and wind resources can be seen, but it cannot intuitively measure the characteristics of the regional wind and wind complementary resources
At the same time, the current research on the wind-solar hybrid system is mostly based on the optimal matching calculation and system optimization control of a certain wind-solar hybrid system. Advantages and disadvantages of resource complementarity

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  • Method and system for evaluating complementarity of regional wind and light resources
  • Method and system for evaluating complementarity of regional wind and light resources
  • Method and system for evaluating complementarity of regional wind and light resources

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Embodiment Construction

[0046] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0047] Such as figure 1 Shown, concrete method of the present invention is:

[0048] 1) Preprocess the wind speed at the hub height of the grid point and the cumulative ground radiation data, and remove abnormal data values ​​(including abnormal size values, continuous constant values, sudden abnormal points, etc.).

[0049] 2) Standardize the wind speed after pretreatment to obtain the wind speed normalized time series v * : The normalized method is calculated according to the following formula:

[0050]

[0051] where: v t is the data in the original sequence, is the mean value of the original sequence, s is the standard deviation of the original sequence, and s is calculated according to the following formula:

[0052]

[0053] 3) Similar to step 2, standardize the accumulated ground radia...

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Abstract

The invention provides a method and system for evaluating the complementarity of regional wind and light resources. On the basis of a standardized wind speed sequence and a ground cumulative exposuredose standardized sequence, wind-light complementary intensities of all grid point in a region are obtained; and a regional wind-light complementary intensity two-dimensional map is drawn to evaluatea wind-light complementary intensity distribution situation of the region. According to the invention, wind and light variables are standardized to form new wind and light resource meteorological variables; and the wind and light resources are integrated and the synergistic changes of wind resources and light resources are considered fully. The abstract concept of wind and light complementation iscalculated and described quantitatively and the wind-light complementary resource distribution map is drawn by using the method, thereby providing a valuable reference base for wind-light resource evaluation, power station site selection, and new energy source matching and regulation in a certain region.

Description

technical field [0001] The invention belongs to the field of power generation systems, and in particular relates to a method and system for evaluating the complementarity of wind and solar resources in a region. Background technique [0002] Wind energy and solar energy are both unstable and discontinuous energy sources, and large-scale grid connection will have a non-negligible impact on the grid. Due to the characteristics of the continental monsoon climate in my country, wind energy and solar energy naturally have strong complementarity in terms of time and region—when the sun is strongest during the day, the wind is weak, and at night, the light is weak, but due to the large surface temperature difference and wind energy It has been strengthened; in summer, the sun shines directly on the northern hemisphere, resulting in high sunlight intensity and low monsoon wind, while in winter, although the sunlight intensity is weak, the wind is relatively strong due to the large te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38
CPCH02J3/383H02J3/386H02J2203/20Y02E10/56Y02E10/76
Inventor 杨永强李秀峰剡文林何金定赵珍玉王凯蔡建章张敬东蒋燕尹成全吴洋栾毅周彬彬陈凯王有香吴东平
Owner YUNNAN POWER GRID
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