摘要
提出一种含分布式电源(DG)的配电网三相解耦潮流计算方法。首先基于序分量法建立配电网三相负荷模型、网络序参数模型和多类型DG接入模型,结合配电网结构、不对称线路三序解耦-补偿模型和道路-回路分析法,在配电序网中提出一种有效的三相不平衡配电网改进潮流计算方法;然后将不同DG并网接口划分为PQ、PQ(V)、PV和PI节点类型,建立适用于三相不平衡配电网潮流算法的PQ、PQ(V)、PV和PI节点类型DG模型,并对其迭代计算模型进行了详细的公式推导。算例分析验证了所提算法的有效性和通用性,所提算法具有良好的收敛性及较强的处理DG节点及其出现无功越界的能力。
A method of decoupled three-phase power flow calculation is proposed for distribution network with DGs.The three-phase load models,sequence parameter models of distribution network and the gridconnection models of different DG types are built based on the sequence component method.Based on the structure of distribution network,the three-sequence decoupling-compensation models of unsymmetrical line and the path-loop analysis method,an effective method of improved power flow calculation in sequence network is proposed for the unbalanced three-phase distribution network.The grid-connection interfaces for different DG types are classified into PQ,PQ（V）,PV and PI node types,the corresponding DG models suitable for the power flow algorithms of unbalanced three-phase distribution network are built,and their iterative calculation models are derived.Case analysis verifies the effectiveness,versatility and convergence of the proposed algorithm,showing its better performance in DG node handling and DG reactive power boundary treatment.
出处
《电力自动化设备》
EI
CSCD
北大核心
2014年第3期99-107,131,共10页
Electric Power Automation Equipment
基金
国家自然科学基金资助项目(51277052
51107032
61104045)
国家电网公司科技项目
江苏省普通高校研究生科研创新计划项目(CXZZ13_0238)~~
关键词
配电网
三相解耦
潮流计算
分布式电源
三相不平衡
模型
distribution network
three-phase decoupling
power flow calculation
distributed power generation
three-phase unbalance
models
