含有分布式电源的配电网三相潮流并行计算

发布时间：2018-04-29 13:53

本文选题：配电网 + 多平衡节点　；参考：《华北电力大学》2014年硕士论文

【摘要】：随着分布式电源应用的日益推广,配电网不断向智能化发展,配电网的结构日趋复杂,这就要求潮流算法不仅能够实现三相计算,还能处理环网的情况。由于配电网规模大、节点多,在进行全网的潮流计算时计算量相当可观,为了实现实时潮流计算,需要通过分布式并行计算来提高计算速度和效率。根据分布式电源的基本原理和控制特性建立了分布式电源在配网潮流计算中的计算模型,新增PI节点和PQ(V)节点,而不再局限于传统的PQ节点和PV节点。为了更好地实现含有分布式电源以及馈线间环网的配网三相潮流计算,提出了多平衡节点的思想,改进了传统的前推回推法,收敛速度快,迭代次数少,与牛顿拉夫逊法的比较看出,该方法的收敛速度和计算精度完全满足实际工程的需要。搭建了分布式并行计算平台,形成分层加分布的并行计算结构；设计了服务实例和管理模块,实现任务的灵活部署和负载均衡；采用ZeroMQ通信技术构建全局通信架构,实现端到端的N对N关系。利用该平台将复杂的全网潮流计算分解为若干子任务派发给不同的计算机,使计算速度和效率得到明显改善,尤其适合大规模的配电网络。基于该平台的多平衡节点潮流算法已在实际工程中应用。经过算例验证表明,随着节点规模的增大,该平台的设计优势越发明显,具有高效、实用的特点。
[Abstract]:With the increasing application of distributed generation, the distribution network is developing intelligently, and the structure of distribution network is becoming more and more complex, which requires that the power flow algorithm can not only realize the three-phase calculation, but also deal with the situation of loop network. Due to the large scale of distribution network and the large number of nodes, the calculation of power flow in the whole network is considerable. In order to realize real-time power flow calculation, it is necessary to improve the computing speed and efficiency through distributed parallel computing. According to the basic principle and control characteristics of distributed power supply, the calculation model of distributed power generation in power flow calculation of distribution network is established, adding Pi node and PQV) node, but not limited to traditional PQ node and PV node. In order to better realize the three-phase power flow calculation of distribution network with distributed power supply and feeder loop network, the idea of multi-balanced node is proposed, and the traditional forward push back push method is improved, the convergence speed is fast and the number of iterations is less. Compared with Newton-Raphson method, it is shown that the convergence rate and accuracy of the method can meet the needs of practical engineering. A distributed parallel computing platform is built to form a layered and distributed parallel computing structure. Service instances and management modules are designed to achieve flexible deployment and load balancing of tasks. The global communication architecture is constructed by using ZeroMQ communication technology. The end-to-end N-to-N relationship is realized. By using this platform, the complex whole network power flow calculation is decomposed into several sub-tasks and distributed to different computers, which improves the computing speed and efficiency obviously, and is especially suitable for large-scale distribution networks. The multi-balanced node power flow algorithm based on the platform has been applied in practical engineering. An example shows that with the increase of node size, the design advantage of the platform becomes more and more obvious, and the platform has the characteristics of high efficiency and practicality.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM744

【参考文献】