• CSCD核心库收录期刊
  • 中文核心期刊
  • 中国科技核心期刊

电力建设 ›› 2017, Vol. 38 ›› Issue (4): 64-.doi: 10.3969/j.issn.1000-7229.2017.04.009

• 智能电网 • 上一篇    下一篇

 基于负荷等效电导迭代的直流配电网潮流算法

 邓帅荣1,赵伟芳1,冉立1,文安2   

  1.  1. 输配电装备及系统安全与新技术国家重点实验室(重庆大学),重庆市 400044; 
     
    2. 南方电网科学研究院有限责任公司,广州市 510080
  • 出版日期:2017-04-01
  • 作者简介:邓帅荣(1990),男,硕士研究生,研究方向为直流配电网可靠性评估、直流输配电相关技术; 赵伟芳(1990),女,硕士研究生,研究方向为直流配电网可靠性评估、直流输配电相关技术; 冉 立(1963),男,教授,博士生导师,研究方向为新型电力电子器件及其可靠性; 文 安(1965),男,博士,千人计划专家,长期从事电网控制保护和柔性直流控制保护等方面研究工作。
  • 基金资助:
     国家重点基础研究发展计划项目(973计划)(2012CB215200);国家重点研发计划项目(2016YFB0901801);广东省引进领军人才专项基金(SEPRI-K131003)

 Power Flow Algorithm of DC Distribution Network Based on Load Equivalent Conductance Iteration

 DENG Shuairong1,ZHAO Weifang1,RAN Li1,WEN An2   

  1.  1. State Key Laboratory of Power Transmission Equipment & System Security and New Technology 
     
    (Chongqing University), Chongqing 400044, China; 2. Electric Power Research Institute of 
     
    China Southern Power Grid, Guangzhou 510080,China
  • Online:2017-04-01
  • Supported by:
     Project supported by National Key Basic Research Program of China(973 Program)(2012CB215200); National Key Research and Development Program of China(2016YFB0901801); Guangdong Leading Talents Introduction Special Funds(SEPRI-K131003)
     

摘要:  摘  要:  分布式电源并网技术需求加快了直流配电网的发展。该文针对低容量多电源的直流配电网潮流计算问题,通过重新定义直流配电网的节点类型,提出了一种负荷等效电导的迭代思想。该方法结合节点电压迭代法,可以快速求解直流配电网的网络潮流。使用该方法对目前常见的“手拉手”直流配电网拓扑进行计算,反推验证了其合理性和有效性。算例结果表明,该方法的收敛速度前期较快,后期逐渐收敛到真值附近;对于潮流计算精度要求较低的系统,可以采用前3步的迭代结果作为其潮流值,不但可以快速求解,还可以得到理想的计算值。

 

关键词:  ,  , 负荷等效电导, 潮流计算, 直流配电网, 节点电压法

Abstract:  ABSTRACT:   The connection of distributed power generation promotes the development of DC power distribution networks. This paper proposes an iterative algorithm using equivalent load conductance for the power flow calculation of DC distribution network with low power and numerous sources by redefining the node type of DC distribution network . This method can quickly solve the DC distribution network power flow in combination with a node voltage iteration method. This method is used to calculate the common DC distribution network topology of ‘hand-in-hand’, which is proved to be operational and effective. The example calculation results show that the convergence rate of this method is faster in the early period and gradually converges to the true value in the later period. For the system with lower precision requirement of power flow calculation, the results of the first three steps can be used as the power flow value, which can get the ideal calculated value with a faster speed.

 

Key words: equivalent load conductance, power flow calculation, DC distribution network, node voltage method

中图分类号: