基于潮流计算的配电系统安全域模型  

Model of Distribution System Security Region Based on Power Flow Calculation

作　　者：肖峻[1] 左磊[1] 祖国强[1] 刘世嵩 

机构地区：[1]智能电网教育部重点实验室(天津大学),天津市南开区300072 [2]国网天津市电力公司滨海供电分公司,天津市滨海新区300450

出　　处：《中国电机工程学报》2017年第17期4941-4949,共9页Proceedings of the CSEE

基　　金：国家重点研发计划项目(2016YFB0900103);国家自然科学基金项目(51477112)~~

摘　　要：现有配电系统安全域(distribution systems security region,DSSR)模型均未精确计及网损与电压约束,故与实际结果存在偏差。文章基于交流潮流方程建立精确计及网损与电压约束的DSSR新模型。基于逐点仿真法可以观测该模型下的DSSR局部边界。通过实际算例对比文中DSSR模型与传统基于直流潮流的线性DSSR模型,刻画二者误差,证实文中DSSR模型更为精确。通过分析网损和电压约束对误差的影响,给出文中模型应用场景的建议,为DSSR的实际应用提供了依据。The existing models of distribution systems security region （DSSR） do not take into account the network power loss and voltage drop constraints accurately, resulting in the error between models and real consequence of security analysis. This paper modeled the DSSR based on AC power flow considering network power loss and voltage drop constraints. The partial boundary of the model can be obtained by the approximation method. The proposed model and a conventional DC flow based linear model of DSSR were compared through a case grid, and the error between the two models were described, demonstrating that the proposed model in this paper is more accurate. The suitable range of application of the proposed model was determined by analyzing the relationships between the error and network power loss and voltage drop constraints, which provides a reference to the implementation of DSSR.

关 键 词：配电系统 安全域 交流潮流 网损 电压约束 

分 类 号：TM74[电气工程—电力系统及自动化]