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基于（p，q）阶区间正交模糊数和相对靶心度的新型电网电能质量提升潜力评估
苏标龙, 杜红卫, 李琼林, 张伟伟, 刘书铭, 龚永健
电力建设 ›› 2025, Vol. 46 ›› Issue (12) : 70-81.
PDF(1601 KB)
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基于（p，q）阶区间正交模糊数和相对靶心度的新型电网电能质量提升潜力评估
Assessment of Power Quality Improvement Potential of New Power Grid Based on （p，q）-Rung Interval-Valued Orthopair Fuzzy Number and Relative off-Target Distance
【目的】 在大规模新能源并网背景下，量化评估电网电能质量提升潜力对后续开展治理服务以及保障电网高效稳定运行至关重要。 【方法】 为此，提出一种基于 阶区间正交模糊数和相对靶心度的新型电网电能质量提升潜力评估方法。首先，构建涵盖电能质量、供电可靠性、服务性及低碳性四个维度的综合评估指标体系。采用基于（p，q）阶区间正交模糊幂加权平均（（p，q）-rung interval-valued orthopair fuzzy power weighted average，（p，q）-RIVOFPWA）算子的模糊层次分析（fuzzy analytic hierarchy process，FAHP）法对一级指标主观赋权，再结合改进层间相关性准则重要性（criteria importance through intercriteria correlation，CRITIC）法对二级指标客观赋权，运用线性加权法得到最终权重。其次，引入优劣解距离法（technique for order preference by similarity to an ideal solution，TOPSIS）和Mahalanobis距离，建立基于正负靶心的改进灰靶决策模型，利用相对靶心度量化分析电能质量提升潜力。最后，通过某市的5个典型区域开展算例分析。 【结果】 结果表明，相对靶心度越大的区域电能质量水平越优，相对地，提升潜力就越小。针对单一区域的相对靶心度分析可有效识别影响提升潜力的核心因素。 【结论】 所提模型和方法能够剖析多维度因素对区域电网电能质量提升的影响，准确评估电网电能质量的整体状况，有助于针对性地改善电能质量问题。
[Objective] Under the context of large-scale renewable energy integration，it is crucial to quantitatively assess the power quality improvement potential of power grid for subsequent governance services and ensuring efficient and stable operation of the power grid. [Methods] Therefore，an assessment method for power quality improvement potential of power grid based on the -rung interval-valued orthopair fuzzy number and relative off-target distance is proposed. First，a comprehensive evaluation index system is constructed around four dimensions： power quality，power supply reliability，serviceability，and low-carbon. The fuzzy analytic hierarchy process method based on the -rung interval-valued orthopair fuzzy power weighted average operator is adopted to subjectively weight primary indicators，and the improved criteria importance through the intercriteria correlation method is used to objectively weigh secondary indicators. The final weights are obtained through linear weighting. Second，the technique for order preference by similarity to an ideal solution and Mahalanobis distance are introduced to establish an improved grey target decision-making model based on positive and negative target centers，and the power quality improvement potential is quantitatively analyzed using the relative off-target distance. Finally，case studies are conducted on five typical regions in a certain city. [Results] The results show that the higher the relative off-target distance，the better the level of power quality and the smaller the improvement potential. Analysis of the relative off-target distance for a single area can effectively identify the core factors that affect improvement potential. [Conclusions] The proposed model and method can analyze the impact of multidimensional factors on the improvement in power quality of regional power grid，accurately assess the overall situation of power quality，and help to improve power quality problems in a targeted manner.
新型电网 /
电能质量评估 /
能质差异系数 /
new power grid /
power quality assessment /
power quality difference coefficient /
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