集群风电场出力统计指标建模与应用

基于概率统计理论,建立单个风电场与集群风电场出力的中心矩关系模型。从风电出力概率分布特性的角度,引入描述风电出力"分布形状"的2个统计学指标——偏度和峰度。基于集群风电出力均值、标准差、偏度和峰度4个统计性指标,构建表征集群风电出力概率分布的皮尔逊族模型,模拟集群风电场出力时序数据,进而得到集群风电场出力曲线。基于对区域典型风电集群历史出力数据的分析,根据经验建立风电场间相关系数与风电场间距离的指数关系模型,并给出区域风电场各阶标准差与平均出力之间的近似多项式关系模型,降低了计算核心指标所需数据维度。对福建省集群风电场进行实例应用分析,结果验证了所提集群风电场模型的准确性和实用性。

半钢生产工艺对干法除尘系统的影响研究

通过对日照钢铁120t转炉干法除尘系统在半钢生产过程中出现问题的分析,结合实际生产状态,进行了工艺改进以及制定各项预防措施,解决了半钢生产条件下干法除尘系统除尘灰潮湿、电场运行波动大的问题,提高了生产效率。

联合站脱水系统存在的问题及处理方法

1.存在问题 北二联合站脱水系统存在如下问题:①电场出现季节性波动;②出现乳液淤渣;③加药量增加;④外供污水水质严重超标;⑤脱水器硅板损耗增大.

Research and Application of Probability Distribution of Wind Power Fluctuation Characteristics

The fluctuation characteristics is the inherent property of wind power.Through analysis of a large number of wind t＇anns based on measured data,we find it describes the best probability distribution of wind power fluctuation for the mixed Gauss distribution of two components,and try to carry out the physical interpretation of two components.Further discussion is between the probability distribution of fluctuating wind power time difference and whole relationship.It is found that the two have basic similarity.Through comparing the different time level data quantified losses the information of wind power fluctuation,quantitative determination of the degree of impact prediction.We can summarize and understand of wind power fluctuation,constructing instance from the wind farm construction and monitoring prediction two aspect recommendations to overcome the adverse effects of wind power fluctuations on the power grid operation.