基于路径和节点权重因子的黑启动路径寻优新方法

摘要

Despite the use of different indicators by existing methods for black-start path optimization to represent the importance of transmission lines and nodes in a power grid,they are not complete.A new method for black-start path optimization based on path and node weight factors is put forward,which are calculated to quantitatively judge the importance of path and node.This method considers each of the factors that influence the importance of path and node to increase the completeness of the indicators.Based on the calculation and comparison of relational weight factors,the identification of the restoration path can be made to realize the optimization of the black-start path.The restoration strategy is divided into four parts: system start-up,pre-formation of backbone network,backbone network restoration and all-direction restoration.Corresponding path optimization models are built to meet the demands of different phases.Finally,the new method combined with the restoration strategy is used to build black-start paths for an actual power grid.%现有黑启动路径寻优方法运用不同指标表征电网输电线路或节点重要性,但所采用的指标尚不完备。文中提出了基于路径和节点权重因子的黑启动路径寻优新方法,通过计算路径和节点权重因子等指标定量评判路径和节点的重要性,考虑了影响路径和节点重要性的各种因素以提高指标的完备性。基于关联权重因子的计算和比较,完成恢复路径的辨识,实现黑启动路径的优化。将电网恢复过程划分为系统启动、网架形成前、主网架恢复和辐射恢复等阶段,建立相应的路径寻优模型以满足不同阶段的恢复需求。最后,运用所提出的方法并结合电网恢复策略,为实际电网建立黑启动路径。