摘要
电网故障后解列出的孤网是电力系统的重要组成部分,优先恢复系统中的孤立电网具有简化计算、加速电网恢复和及时带动重要负荷的优点。文中针对恢复的快速性和稳定性,综合考虑了孤网全黑状态的分区策略和各分区的恢复网架,引入最短启动时间算法和整数条件下的线性规划法,提出一种全新的孤网分区优化算法。该算法以机组、负荷最短启动时间为目标函数,以分区内的机组稳态有功、无功功率平衡为约束,将复杂的多目标非线性规划问题化简为单目标多约束的线性规划问题。文末以新英格兰10机39节点系统作为算例验证本文算法的有效性。
The isolated grid which is splitting after the grid fault has become an important part of the power system. Giving priority to the isolated grid restoration has the advantage of simplifying calculation, accelerating the recovery and restoring the important load in time. It needs to be divided into several partitions in the total black state. This paper is aimed at the rapidity and stability of the restoration, comprehensively considering isolated network partitioning strategy and the restoration skeleton, introducing the shortest path algorithm and integer linear programming, proposing a new optimization algorithm for isolated network partitioning. The algorithm makes the shortest start time of unit as the objective function, constructed by the active power and reactive power balance of the unit to simplify a complex multi objective nonlinear programming problem as a single objective and multi constrained linear programming problem. New England 10-Machine 39-Bus System is used as an example to verify the effectiveness of the proposed algorithm.
出处
《电力工程技术》
2017年第1期74-78,共5页
Electric Power Engineering Technology
基金
国家电网公司科技项目(电网黑启动过程中利用直流输电的电网恢复技术研究)
关键词
黑启动
孤网分区
并行恢复
恢复网架
black-start
isolated network partition
parallel recovery
recovery network