直流配电系统潮流可行解与电压稳定性分析方法  

Feasible Power Flow Solution and Voltage Stability Analysis Method for DC Distribution System

作　　者：张聪[1] 彭克[1] 徐丙垠[1] 陈羽[1] 赵学深[1] 赵曰浩 ZHANG Cong;PENG Ke;XU Bingyin;CHEN Yu;ZHAO Yueshen;ZHAO Yuehao(College of Electrical and Electronic Engineering, Shandong University of Technology, Zibo 255000, Chin)

机构地区：[1]山东理工大学电气与电子工程学院,山东省淄博市255000

出　　处：《电力系统自动化》2018年第14期48-53,共6页Automation of Electric Power Systems

基　　金：国家重点研发计划资助项目(2016YFB0900600);山东省自然科学基金资助项目(ZR2017LEE022);国家电网公司科技项目(52094017000W)~~

摘　　要：基于柔性直流技术的直流配电系统是未来智能电网的发展趋势,为直流负荷及直流型分布式电源的灵活接入提供了良好的条件,但对直流配电系统的电压稳定性也提出了更高的要求。从系统级稳定性角度考虑,通过巴拿赫不动点定理证明了直流配电系统潮流解的存在性与唯一性,并基于潮流可行解提出了电压稳定的分析方法,可快速评估直流配电系统接入负荷后的稳定性,避免了复杂的连续潮流计算。最后通过算例测试验证了该方法的有效性和正确性。DC distribution system based on the flexible HVDC technology is the future trend of smart grid,which can provide better conditions for the flexible integration of DC loads and distributed generators（DGs）.But higher requirements for the system voltage stability are also needed.From a global stability point of view,the existence and uniqueness of power flow solutions for the DC distribution system are proved through the Banach fixed point theorem.A voltage stability analysis method based on the feasible solution of power flow is proposed to rapidly assess the voltage stability of DC distribution system and avoid the continuous power flow computation.Finally,the correctness and effectiveness of the proposed method are verified by simulation tests.

关 键 词：直流配电系统 潮流可行解 不动点定理 电压稳定 

分 类 号：TM712[电气工程—电力系统及自动化] TM721.1