摘要
为满足大规模输、配电网的实时潮流计算的快速计算要求,在网格计算环境下基于配电网的结构特点对配电线路按空间划分来进行并行化处理,在输配电网的边界进行功率交换与迭代,构造了输配电网联合潮流并行算法。网格并行计算的输电网和高压配网子区域中使用P-Q分解法,中压配电网子区域使用改进支路电流法,其利用节点—支路关联矩阵来描绘辐射或弱环结构的配电网络,采用节点、支路分层编号加快矩阵运算速度,利用三相拓扑扩展和矩阵增广实现三相潮流计算,采用Gauss-Seidel恒定电压幅值迭代补偿方法解决配电网弱环结构。在网格计算环境以上海输配电网为算例进行了计算,算例结果验证了所提算法的有效性。
For rapid real-time power flow calculation of the large scale transmission and distribution networks, this paper constructs the united power flow parallelizing algorithm under grid computing environment. Based on radial structure of distribution network, the feeders can be processed through partition in space. On the boundary nodes of transmission and distribution networks, the paper exchanges and iterates the power of sub-networks and main network, so the networks are decoupled. The transmission and high-voltage distribution networks of the grid parallel computing adopt the P-Q decoupled method, and the middle-voltage distribution sub-network uses the improved branch current method. The improved branch current method uses the node-branch incidence matrix to represent the radial or weakly loop distribution network, uses hierarchical numbering method to increase the calculation speed, and uses three-phase topological extension and network extension matrix to compute three-phase power flow. Furthermore, invariant voltage magnitude compensation based on Gauss-Seidel iteration is applied to solve the case of PV nodes. Under the grid computing environment, the transmission and distribution network of Shanghai is taken as a test case and the result shows that the proposed algorithm is effective.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2012年第5期42-47,共6页
Power System Protection and Control
基金
国家自然科学基金重点项目(90612018)
国家重点基础研究发展计划973计划资助项目(2009CB219703)
教育部新世纪优秀人才支持计划(NCET-07-0547)~~
关键词
输电网
配电网
联合潮流
网格计算
transmission network
distribution network
united power flow
grid computing
