• 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 ›› 2019, Vol. 40 ›› Issue (3): 102-108.doi: 10.3969/j.issn.1000-7229.2019.03.013

• 智能电网 • 上一篇    下一篇

DG出力不确定性对交直流混合系统潮流影响的量化分析方法

徐晨博1,周志芳1,高佳宁2,王坤1,袁翔1   

  1. 1.国网浙江省电力有限公司经济技术研究院,杭州市310000;2.上海交通大学国家能源智能电网(上海)研发中心,上海市200240
  • 出版日期:2019-03-01
  • 作者简介:徐晨博(1989),男,工程师,通信作者,研究方向为能源互联网与智能电网; 周志芳(1964),男,高级工程师,研究方向为电网发展与规划管理; 高佳宁(1996),男,硕士研究生,研究方向为电力系统安全分析; 王坤(1989),男,工程师,研究方向为配电网规划与运行; 袁翔(1982),男,高级工程师,研究方向为电网信息化管理与分析。
  • 基金资助:
    国网浙江省电力公司科技项目(5211JY16000X)

Quantitative Analysis Method for the Influence of DGs Uncertainty on the Power Flow of AC/DC Hybrid System

XU Chenbo1, ZHOU Zhifang1, GAO Jianing2, WANG Kun1, YUAN Xiang1   

  1. 1. State Grid Zhejiang Economic and Technological Research Institute, Hangzhou 310000, China;2.State Energy Smart Grid R & D Center (Shanghai), Shanghai Jiao Tong University, Shanghai 200240, China
  • Online:2019-03-01
  • Supported by:
    This work is supported by SGCC Zhejiang Electric Power Company Research Program(5211JY16000X).

摘要: 交直流混合系统可以有效接纳多种分布式电源(distributed generation,DG),为研究DG出力不确定性对交直流混合潮流的影响,提出了基于齐诺多面体和线性化潮流的量化分析方法。首先采用齐诺多面体建立DG功率注入的不确定集合,随后通过线性化交直流统一潮流模型,得到了状态量的不确定集合,其包含电压、相角等状态量所有可能的取值,从而分析系统在不确定条件下的运行安全性。文章将所提方法运用在含不同控制方式的交直流混合电网算例中,验证了所提方法的有效性和实用性。

关键词: 交直流混合系统, 分布式电源, 不确定集合, 齐诺多面体, 潮流分析, 控制方式

Abstract: AC/DC hybrid system can effectively integrate different types of distributed generators. In order to analyze the impact of uncertain power output of DGs on AC/DC hybrid power flow, a quantitative analysis method based on zonotope and linearized power flow model is proposed. Zonotope is used to construct the uncertainty set of DG power injections, and then through a linearized AC/DC unified power flow model, the uncertainty set of state variables is obtained, which bounds all possible values of the system state variables such as voltage magnitudes and angles, and can be used to analyze the operational safety of the system under uncertainties. Finally, the proposed method is applied to an AC/DC hybrid grid with different control modes and  the results verify the effectiveness and practicality of the method.

Key words: AC/DC hybrid system, distributed generation, uncertainty set, zonotope, power flow analysis, control mode

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