Wind power confidence capacity value (CV) evaluation method suitable for use in high-wind-power-penetration-rate power system

Abstract

The invention discloses a wind power confidence capacity value (CV) evaluation method suitable for use in a high-wind-power-penetration-rate power system. The method includes the following steps: S1,selecting a study object, and respectively acquiring a wind power installed-capacity value C<W> of wind turbines, a wind power time-sequence history output per-unit value curve P<W>(t) and a time-sequence load demand curve P<L>(t) of corresponding time; S2, calculating a wind power history output actual-value curve P<WR>(t); S3, calculating a net-load time-sequence curve P<LN>(t); S4, calculatinga net-load duration curve P<LDN>(t); S5, calculating a load duration curve P<LD>(t); S6, calculating effective load carrying capability ELCC<WIND>(t) of wind power; S7, calculating a confidence capacity value CP<WIND> of wind power; and S8, calculating a wind power capacity value confidence level CV<WIND>. The method has the advantages that: a concept is simple and clear, data demand is simple, the wind power confidence capacity value can be obtained simply through processing the history wind power output and the load curves of a study area, the wind power confidence capacity value is evaluated in a case of a high wind power penetration rate, a power system planning scheme is optimized, system running, reliability evaluation and the like are arranged, and the method has better practical guidance significance and application values.

Description

technical field [0001] The invention belongs to the field of power simulation analysis, and in particular relates to a wind power confidence capacity evaluation method suitable for high wind power penetration rate power systems. Background technique [0002] Wind power generation is currently one of the power generation methods with the most mature technology, the most large-scale development conditions and the most commercial development prospects in energy power generation. With the increasing proportion of wind power in the power structure, its impact on the safe and stable operation of the power system is becoming more and more significant. At present, the value of wind power is usually considered more in planning than its capacity value (that is, wind power participates in power balance but not power balance in planning), but in the case of high wind power penetration, ignoring its capacity value will lead to waste of resources And excessive investment is not conducive...

AI Technical Summary

Problems solved by technology

[0006] At present, the existing wind power confidence capacity calculation method usually requires various types of installed capacity data and historical output data of the entire power system for calculation, and the calculation difficulty, complexity and demand for data types and data volume are very high

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