电器与能效管理技术 ›› 2022, Vol. 0 ›› Issue (2): 74-82.doi: 10.16628/j.cnki.2095-8188.2022.02.012

• 电能质量 • 上一篇    下一篇

计及不确定性的主动配电网电压越限风险评估及预控

廖剑波1, 陈波1, 陈垣玮1, 余维1, 陈建聪1, 林大增1, 张路2, 南东亮2,3   

  1. 1.国网福州供电公司, 福建 福州 350009
    2.国网新疆电科院,新疆 乌鲁木齐 830011
    3.可再生能源发电与并网技术教育部工程研究中心(新疆大学), 新疆 乌鲁木齐 830047
  • 收稿日期:2021-09-30 出版日期:2022-02-28 发布日期:2022-03-31
  • 作者简介:廖剑波(1991—),男,工程师,主要从事配电网规划与运行、主动配电网技术等研究。|陈 波(1986—),男,高级工程师,主要从事配电网规划研究等。|陈垣玮(1989—),女,工程师,主要从事配电网规划研究等。
  • 基金资助:
    国家自然科学基金项目(51667020)

Voltage Violation Risk Assessment and Pre-Control in Active Distribution Network Considering Uncertainty

LIAO Jianbo1, CHEN Bo1, CHEN Yuanwei1, YU Wei1, CHEN Jiancong1, LIN Dazeng1, ZHANG Lu2, NAN Dongliang2,3   

  1. 1. State Grid Fuzhou Electric Power Supply Company,Fuzhou 350009,China
    2. State Grid Xinjiang Electric Power Research Institute,Urumqi 830011,China
    3. Engineering Research Center of Education Ministry for Renewable Energy Power Generation and Grid Technology (Xinjiang University),Urumqi 830047,China
  • Received:2021-09-30 Online:2022-02-28 Published:2022-03-31

摘要:

针对短期运行中风光荷不确定性导致的电压越限风险展开研究,提出了一种主动配电网(ADN)电压越限风险评估及预控方法,建立ADN电压越限风险评估指标,应用基于半不变量和Gram-Charlier级数展开的随机潮流算法来实现风险指标的计算。风险超阈值时执行预防控制以提高运行安全性。综合考虑分布式能源有功无功、柔性负荷管理、传统无功电压设备,提出一种基于多级主动管理的电压越限风险预控模型,并给出了基于和声搜索算法的模型求解策略。针对ADN算例应用所提方法实施电压越限风险评估与预控,实现了关键薄弱节点的准确辨识和风险的有效管控。

关键词: 主动配电网, 运行风险评估, 电压越限, 预防控制, 随机潮流

Abstract:

Aiming at the voltage violation risk caused by the uncertainty of DGs and loads in short-term operation,a voltage violation risk assessment and pre-control method of active distribution network (ADN) is proposed.The voltage violation risk assessment index is established.The stochastic power flow solution based on cumulant and gram-charlier series expansion is applied to calculate the risk index.When the risk exceeds the threshold,pre-control is carried out to improve the system operation security.Considering the active and reactive power of distributed energy resources,flexible loads management and traditional reactive and voltage equipment,a voltage violation risk pre-control model based on multi-level active management is proposed.Based on harmony search algorithm,a model solving strategy is formulated.The proposed method is applied to evaluate and pre-control the voltage violation risk of ADN,which realizes the accurate identification of key weak nodes and effective risk control.

Key words: active distribution network(ADN), operation risk assessment, voltage violation, pre-control, probabilistic power flow

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