考虑风电不确定性的电网备用优化决策方法研究  

Study of Optimized Backup Method for Power Grid Considering the Uncertainty of Wind Power

作　　者：殷超[1] 

机构地区：[1]河海大学能源与电气工程学院,江苏南京210098

出　　处：《电网与清洁能源》2015年第4期106-112,118,共8页Power System and Clean Energy

摘　　要：基于风电并网的国内外研究的基础上,主要进行了风电不确定性的电网备用优化决策方法研究。利用风电不确定性、机组强迫停运率和负荷波动三方面建立系统的不确定性模型。以最小化备用成本为目标,并分别以解析法和mentocarlo模拟法求解系统的可靠性指标作为约束条件,构建确定系统所需的最优旋转备用容量的数学模型。对接有风电场的IEEE RTS96系统仿真,反映了相同的备用需求随风速变化的趋势,并比较得出模拟法得到的备用结果比解析法大。在此基础上,该方法还可以对风速预测偏差,风电渗透功率对系统所需旋转备用的影响进行进一步分析。Based on studies on the wind power integrated grid at home and abroad,this paper focuses on the study of the optimized backup method for the power grid considering uncertainty of wind power. Simulation based on uncertainty of wind power,rate of the forced unit outage and load fluctuation is considered. The mathematical model is built to quantify the best spinning reserve capacity as required with analytical method and Mento-Carlo simulation as restrains, aiming at minimizing the cost. The system simulation of the power grid connected wind forms by IEEE RTS96 R indicates the change trend of the reserve demand with the change of wind speed and it also shows that the reserve result obtained with the simulation method is large than that obtained with the analytical method.Based on these results,this method can further analyze the deviation of the wind speed from the forecast and the influence of the wind power penetration on spinning reserve.

关 键 词：风电并网 旋转备用 失负荷概率(LOLP) 电量不足期望值(EENS) 解析法 

分 类 号：TM614[电气工程—电力系统及自动化]