利用灵敏度分析的规模风电并网系统连锁故障阻断控制  

Blocking Control of Cascading Failures for Large-scale Wind Power System Using Sensitivity Analysis

作　　者：吴宇航 王涛[1] 范辉 顾雪平[1] WU Yuhang;WANG Tao;FAN Hui;GU Xueping(School of Electrical&Electronic Engineering,North China Electric Power University,Baoding 071003,Hebei Province,China;State Grid Hebei Electric Power Co.,Ltd.,Shijiazhuang 050022,Hebei Province,China)

机构地区：[1]华北电力大学电气与电子工程学院,河北省保定市071003 [2]国网河北省电力有限公司,河北省石家庄市050022

出　　处：《电网技术》2023年第9期3743-3752,共10页Power System Technology

摘　　要：为降低规模风电并网系统发生连锁故障的风险,提出一种利用灵敏度分析的连锁故障阻断控制模型。根据阻断控制措施对连锁故障传播路径的影响,利用功率灵敏度矩阵确定易受控制措施影响而发生故障的敏感线路。对敏感线路潮流设置安全约束,构建了规模风电并网系统的连锁故障阻断控制模型。该模型以概率最优潮流计算为基础,以控制代价最小为目标,将线路潮流、电压限值归结为机会约束,可获得兼顾安全性与经济性的规模风电并网系统连锁故障控制方案。以IEEE39节点系统为例对不同控制模型进行对比分析,验证了所提控制模型的有效性,并从风电渗透率与置信水平的角度分析了规模风电接入对连锁故障阻断控制的影响。In order to reduce the risks of cascading failures in a large-scale wind power system,a cascading failure blocking control model based on sensitivity analysis is proposed.According to the influence of the blocking control measures on the propagation paths of a cascading failure,the lines sensitive to the control measures are determined by using the power sensitivity matrix.Considering the power flow control constraints of the sensitive lines,the cascading failure blocking control model of the large-scale wind power system is constructed.Based on the probabilistic optimal power flow calculation and aiming at the minimum control costs,the model obtains a cascading fault control scheme of the large-scale wind power system considering safety and economy by reducing the line power flow and the voltage limit to the opportunity constraints.Taking the IEEE39 bus system as an example,different control strategies are compared and analyzed to verify the effectiveness of the proposed control model.The impact of the large-scale wind power access on the cascading failure blocking control is analyzed from the perspective of the confidence level and the wind power permeability.

关 键 词：规模风电 连锁故障 阻断控制 灵敏度分析 

分 类 号：TM721[电气工程—电力系统及自动化]