基于回路分析法的含环网配电网改进潮流算法

doi:10.12096/j.2096-4528.pgt.18232

摘要/Abstract

摘要：

为了提高配电网消纳清洁能源能力，进一步提升配电网供电可靠性，配电网合环运行受到越来越多的关注。针对传统前推回代法处理环网潮流时出现不收敛情况，结合回路分析法与前推回代法，提出一种含环网配电网改进潮流算法。通过分解支路电流，对环网分裂点电流进行补偿，改变其不收敛现象，并且通过Matlab进行数据仿真，验证了此算法的有效性和精确性。

关键词: 配电网, 分布式发电, 合环运行, 回路分析法, 前推回代法

Abstract:

In order to improve the ability of clean energy consumption and the reliability of power supply, distribution network operation is attracting more and more attention. In view of the non-convergence of the traditional forward and backward substitution method, an improved power flow algorithm for distribution network with ring network was proposed by combining the loop analysis method with the forward and backward generation power flow algorithm. The branch current was decomposed to compensate the split-point current, and the non-convergence phenomenon was changed. The validity and accuracy of the algorithm were verified by data simulation with Matlab.

Key words: distribution network, distributed generation, loop operation, loop analysis, forward and backward substitution method

中图分类号:

TK01
TM727

顾思, 孙晓, 马畅, 陈静. 基于回路分析法的含环网配电网改进潮流算法[J]. 发电技术, 2020, 41(6): 675-680.

Si GU, Xiao SUN, Chang MA, Jing CHEN. Improved Power Flow Algorithm for Distributed Ring Network Based on Loop Analysis[J]. Power Generation Technology, 2020, 41(6): 675-680.

图/表 8

图1 配电网络潮流计算的基本单元

Fig.1 Basic unit of power flow calculation

图2 环网等效分裂点

Fig.2 Ring network equivalent splitting point

图3 广度优先搜索

Fig.3 Breadth-first search

图4 基于回路分析法改进潮流算法流程

Fig.4 Flow chart of improved power flow algorithm based on loop analysis

图5 IEEE-33节点配电系统

Fig.5 IEEE-33 node power distribution system

图6 IEEE-33节点配电系统树枝和连枝

Fig.6 IEEE-33 node power distribution system branches and branches

图7 算法收敛曲线

Fig.7 Algorithm convergence curve

图8 节点电压分布情况

Fig.8 Node voltage distribution

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