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电网安全运行知识的表达与演变

DOI: 10.13334/j.0258-8013.pcsee.2015.20.001, PP. 5117-5123

Keywords: 电力系统,智能电网,安全运行,知识表达,知识演变,风电

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Abstract:

随着智能电网的发展,电网运行方式呈现时变的特点,导致电网安全运行知识呈现出复杂多变的特点,迫切需要研究电网安全运行知识的表达方式和演变规律,以更好地了解智能电网下电网安全运行知识的特点,为电网安全运行知识管理的研究奠定基础。该文在对电网安全运行知识特点和规律归纳总结的基础上,提出了包含主特征维、辅助特征维、数值维的安全运行知识三维表达方法。针对智能电网环境下电网运行方式和运行知识复杂多变的特点,将电网安全运行知识演变分为程度由强到弱的三类演变,即:结构性演变、特征性演变和数值性演变。以自动发现的电网在线关键断面和精细规则为电网在线安全运行知识,针对修改后的IEEE9节点系统和某省级实际电网进行算例研究,揭示了潮流注入变化和电网拓扑变化时电网安全运行知识的结构性、特征性和数值性等三类演变现象,验证了所提出的电网安全运行知识三维表达方法以及知识演变分类方法的有效性,为电网安全运行知识管理的研究奠定基础。

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