考虑系统运行风险的风电穿透功率极限动态求解方法  

Dynamic Method for Solving Wind Power Penetration Limit Considering System Operation Risk

作　　者：董开松[1] 胡殿刚[2] 秦睿[1] 贾嵘[3] 李臻[1] 李韶瑜[1] 

机构地区：[1]国网甘肃省电力公司电力科学研究院,兰州730050 [2]国网甘肃省电力公司,兰州730050 [3]西安理工大学水利水电学院,西安710048

出　　处：《高电压技术》2015年第10期3422-3427,共6页High Voltage Engineering

基　　金：国网甘肃省电力公司本部项目(5227221350BR);国家电网公司科技项目(52272214002Y)~~

摘　　要：风电对其并入电网的运行带来的负面影响,会反过来限制风电的并网规模。为此,考虑风电出力的随机性和波动性,基于风险约束理论,构建了一种计算风电穿透功率极限的动态模型,并提出相应的求解算法。提出了度量风电出力随机性影响的风险指标,将时间和机组组合作为决策变量,以风电的穿透功率极限为优化目标,构建了考虑系统运行风险的风电穿透功率极限的动态计算模型,同时,提出了基于Benders解耦和帝国竞争算法的模型求解方法。利用10机系统算例验证了论文所提模型和算法的正确性,仿真结果表明,系统的风电穿透功率极限与系统风险阀值λ负相关,与风速预测误差标准差σv正相关。The negative effects from the integration of wind power will in turn limit the size of the wind power. In this paper, considering the randomness and volatility of wind power output, using the theory of risk constraint, we constructed a dynamic model to calculate the wind power penetration limit, and put forward the corresponding solving algorithm. Moreover, we put forward the risk index to measure the effects of wind power output random.Taking the combination of time and unit commitment as decision variables, the penetration limit of wind power as the optimization goal, we con- strutted the dynamic calculation model, meanwhile, considering the wind power penetration limit of system operation risk, we put forward the methods based on Benders decoupling and imperialistic competition algorithm. The 10 machine sys- tem were used to verify the correctness of the proposed model and algorithm, The results of simulation show that the wind power penetration limit is negatively correlated to systemic risks thresholds λ and positively correlated to the standard deviation σv wind speed forecast error.

关 键 词：风力发电 电力系统 风险约束 风电穿透功率极限 帝国竞争算法 断面搜索 

分 类 号：TM614[电气工程—电力系统及自动化]