基于SPSS多元回归分析的中压配电网中性点接地方式研究

Studies On The Neutral Point Grounding Mode Of The Medium-Voltage Distribution Network Based On Multivariate Regression Analysis

中性点接地方式涉及到电力系统的安全稳定与经济运行,而中压配电网接地方式的确定受诸多因素影响。本文通过分析天津配电网中性点接地方式适应性良好的变电站,以母线间隔单元为最小单位,找出了中性点经小电阻、消弧线圈和不接地三种接地方式与电容电流大小、电缆占出线长度比例、实际出线占母线间隔比例之间的关系,从而提出了一种基于SPSS多元回归分析的中性点接地方式决策方法,并通过实例验证了其合理性和有效性。

By analyzing the substation of Tianjin power grid with well adaptability for neutral point ground modes, we found the relationship between neutral point ground modes and capacitive current size, cable ratio, and actual ratio. Then we proposed a decision method for neutral point grounding mode, based on multivariate regression analysis. Examples were used to verify the rationality and effectiveness of the decision method.