考虑暂态稳定约束的极限传输容量分布式并行体系结构设计

Design of a Distributed Parallel Architecture for Total Transfer Capability With Transient Stability Constraints

针对预想故障集下,考虑暂态稳定约束的极限传输容量(total transfer capability,TTC)评估问题,以快速、高效地得到大规模互联电网的稳定极限,实现在线应用为目的,设计了一种分布式并行计算框架。研究了暂稳约束TTC评估的基本计算流程以及系统的整体体系结构。提出了一种优化的工作站群分布式并行计算模式。研究了系统设计中的一些关键子模块。所设计的分布式并行计算平台不仅能够方便地集成到现有的动态安全评估(dynamic security assessment,DSA)系统,同时还可作为离线仿真培训工具,对电力系统的特定情况进行更为详尽地分析。

To implement rapid and efficient on-line calculation of security margin of large-scale.interconnected power grid, a distributed parallel computation framework is designed in which the total transfer capability （TTC） evaluation considering transient stability constraints under specified contingency set is included. The system architecture and basic calculation flow for TTC evaluation considering transient stability constraints are researched, and an optimized workstation cluster based distributed parallel computing mode is proposed. In this paper, several key sub-modules of this system are presented. The designed distributed parallel calculation platform not only can be integrated into existing dynamic security assessment （DSA） system conveniently, but also can be used as an off-line training simulator to analyze specified cases occurred in power grids.