Method for computing effective capacity coefficient of large wind power base and method for determining capacity of power transmission channel of large wind power base
A large-scale wind power base, effective capacity technology, applied in computing, electrical digital data processing, special data processing applications, etc., can solve problems such as lack of scientificity and no mention of technical and economic comparisons
Active Publication Date: 2013-11-20
NORTHWEST ELECTRIC POWER DESIGN INST OF CHINA POWER ENG CONSULTING GROUP
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However, the specific method of technical and economic comparison is not mentioned in the specification, which leads to the fact that the effective capacity factor is often determined by subjective experience in engineering practice, which lacks certain scientificity
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[0085] In the following, an example of calculating the effective capacity coefficient of a large-scale wind power base will be described in detail in conjunction with the accompanying drawings. It should be emphasized that the following descriptions are only examples and not intended to limit the scope of the invention and its application.
[0086] figure 1 For a wind power base with a certain installed capacity, when different capacity coefficients are selected, the change trend of wind power, power grid, peak regulation and total annual cost per unit of electricity is illustrated. In the cost of unit wind power electricity, the cost of wind power (see figure 1 Curve 1) and grid cost (see figure 1 Curve 2 in ), peak shaving fee (see figure 1 The trend of the curve 3) is opposite, and the total annual cost curve after the superposition of the three curves will have the lowest point (see figure 1 curve in 4). The wind power capacity coefficient corresponding to this point ...
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The invention relates to a method for computing an effective capacity coefficient of a large wind power base and a method for determining the capacity of a power transmission channel of the large wind power base. According to the method for computing the effective capacity coefficient of the large wind power base and the method for determining the capacity of the power transmission channel of the large wind power base, cost for receiving wind power is composed of three parts according to the wind power consumption process of a system, the three parts are wind power cost, power grid cost and peak shaving cost, the wind power cost comprises construction investment of wind power installation and operation and maintenance cost, the power grid cost comprises construction investment for delivering wind power out of a power grid, operation and maintenance cost and transmission loss cost, and the peak shaving cost comprises construction investment of a peaking power source, operation and maintenance cost and peak shaving loss cost; after the installed capacity of the wind power base is determined, the variation tendency of the wind power cost is contrary to the variation tendency of the power grid cost and the variation tendency of the peak shaving cost in the cost of per unit wind power along with the change of a selected capacity coefficient, the total cost which is the sum of the wind power cost, the power grid cost and the peak shaving cost of per unit wind power can reach a lowest point, the power transmission channel is established and a peaking power source is equipped according to a wind power capacity coefficient corresponding to the lowest point, the optimal economical point of wind power consumption of the whole system is achieved, and the wind power capacity coefficient corresponding to the lowest point is the power wind effective capacity coefficient.
Description
【Technical field】 [0001] The invention relates to the technical field of wind power generation, in particular to a method for calculating the effective capacity coefficient of a large-scale wind power base. 【Background technique】 [0002] Due to the randomness and uncertainty of wind power, the output of wind farms has a certain probability distribution. The probability of exceeding a given output value may be very small, and the amount of electricity above the output is also very small. This feature is especially evident for large wind power bases. Statistical analysis of the historical output data of a wind power base in Northwest China shows that the maximum output of the wind power base is 0.724 (accounting for the proportion of wind power installed capacity), the probability of output exceeding 0.53 is only 5%, and the electricity with output exceeding 0.53 only accounts for the total power generation capacity 1.21%. Since most of the large-scale wind power bases plan...
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IPC IPC(8): G06F19/00
CPCY04S10/50
Inventor 杨攀峰李海伟张宝金王晓阳
Owner NORTHWEST ELECTRIC POWER DESIGN INST OF CHINA POWER ENG CONSULTING GROUP