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1.武汉大学电气与自动化学院,湖北省武汉市 430072
2.国网湖北省电力有限公司电力科学研究院,湖北省武汉市 430077
Received:20 September 2019,
Revised:2020-03-08,
Published Online:15 July 2020,
Published:10 March 2021
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徐悦,李博,孙建军等.基于运行韧性评价的配电网电压暂降治理评估[J].电力系统自动化,2021,45(5):104-110.
XU Yue,LI Bo,SUN Jianjun,et al.Evaluation of Voltage Sag Management in Distribution Network Based on Operation Resilience Assessment[J].Automation of Electric Power Systems,2021,45(5):104-110.
徐悦,李博,孙建军等.基于运行韧性评价的配电网电压暂降治理评估[J].电力系统自动化,2021,45(5):104-110. DOI: 10.7500/AEPS20190920009.
XU Yue,LI Bo,SUN Jianjun,et al.Evaluation of Voltage Sag Management in Distribution Network Based on Operation Resilience Assessment[J].Automation of Electric Power Systems,2021,45(5):104-110. DOI: 10.7500/AEPS20190920009.
随着中国生产制造水平的提升,配电网中敏感负荷日趋增加,电压暂降及短时中断造成的经济损失日趋严重
而当前的可靠性及韧性的评价方法无法评价短时间尺度下配电网持续供电的能力,也难以反映电压暂降的影响程度,因而无法提供量化指标为电压暂降治理作规划参考。文中在挖掘电网以往评估方法内涵的基础上,针对含敏感负荷的配电网,考虑网架结构、负荷水平、治理措施经济性等因素,提出了运行韧性评估方法与评估流程,定义了配电网运行韧性指标,可为电压暂降治理方案评价提供量化参考。通过具体算例分析对比了不同网架结构、不同治理手段下含敏感负荷配电网的可靠性指标与运行韧性指标,结果表明运行韧性指标能够更明显和有效地反映电压暂降治理的技术经济性。
With the rising manufacturing level in China
the ratio of sensitive load in the distribution network keeps increasing
and massive economic loss caused by voltage sag and short-term interruption has become increasingly serious. However
current assessment methods of reliability and resilience are insufficient to evaluate the continuous power supply capacity of the distribution network in the short-term scale. It is difficult to reflect the impact level of voltage sags
which cannot put forward the quantitative indicators as planning reference for voltage sag management. In this paper
on the basis of mining the connotation of the previous assessment methods for the power grid
aiming at the distribution networks with sensitive loads
an assessment method and workflow of operation resilience are presented considering the factors such as grid structure
load level
economy of control measures. Furthermore
the indicators of operation resilience for the distribution network are defined
which can provide the quantitative reference to the assessment of voltage sag management. After performing assessment through specific examples
the indicators of reliability and operation resilience with different power grid structures
and management measures are analyzed and compared in the distribution network with sensitive loads. The result shows that the indicators of operation resilience can evidently and effectively reflect the technical economy of voltage sag management.
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