考虑相关性的地区风电出力对调峰容量的影响分析

在地区性的大规模风电并网背景下,电网的调峰能力是制约风电并网的一个很重要的因素。本文以某一实际地区电网一年的数据为例,计算风电出力和典型日负荷的皮尔逊相关系数,分析单风电场出力和地区风电出力的特性,在风电出力特性分析的基础上,计算分析不同风电出力场景下的调峰容量,选取用于调峰容量计算的地区风电典型出力特性。研究认为当地区电网并网风电容量较大时,考虑地区风电出力与负荷的相关性,采用逆调峰特性最明显的风电出力场景计算调峰容量是更合理的方法。

Analysis Impact on Regional Wind Power to Peak Regulation Capacity by Considering the Correlation

On the background of regional power grid integrated with large-scale wind generation, the peak regulation capacity ability of power grid is an important factor to restrict the integrating of wind power. In this paper, annul data for a real regional power grid is taken as an example to calculate the Pearson correlation coefficient of wind power and typical daily load, and to analyze the characteristics of single wind farm and regional wind power. On the basis of analyzing the characteristics of wind power, peak regulation capacity under different wind power scene is calculated and analyzed, and typical characteristics of regional wind power for calculating peak regulation capacity is chosen. It is suggested from researches that the more reasonable method for calculating peak regulation capacity under the scene of wind power output with the most obvious inverse peak regulation characteristics is presented by considering the correlation of the regional wind power and daily load when there is bigger grid-connected wind power capacity of regional power grid.