摘要
提出了一种考虑概率可靠性指标的输电网加固规划方法。用蒙特卡罗方法模拟计及发电机和输电线强制停运率的电网运行状态集。对每一运行状态,采用直流潮流模型替代最大流最小割集的方法来计算各负荷节点的负荷缺额,进而提高可靠性指标计算精度。考虑到概率可靠性指标计算的复杂性,构建了一个全新的灵敏度指标,并采用结构型启发式算法来求解电网加固规划问题。基于一个6节点系统和一个18节点的实际系统的仿真结果证明了所提方法的有效性。
A transmission enhancement planning （TEP） model considering the probabilistic reliability criteria is proposed. The Monte Carlo simulation is employed to simulate the system components states considering the force outage rates of the genera- tors and the transmission lines. A DC power flow model is adopted to enhance the accuracy of the amount of load shedding at load bus so as to obtain the more accurate reliability index. Considering the complexity of calculation process of reliability as- sessment, a constructive heuristic algorithm （CHA） is used to solve the TEP problem. In addition, a novel sensitivity index is proposed to choose the most effective branch so as to enhance the system reliability. The simulations are carried out on the six - bus system derived from the Garver＇s system and an actual 18 - bus system. The results verify the effectiveness of the pro- posed model.
出处
《四川电力技术》
2016年第1期66-72,共7页
Sichuan Electric Power Technology
关键词
概率可靠性
节点可靠性
输电网规划
启发式算法
probabilistic reliability
nodal reliability
transmission reinforcement planning
heuristic algorithm
