Research on Influencing Factors of Distribution Network Reliability Based on Combination Empowerment and Improved Grey Correlation Analysis

doi:10.11985/2022.01.006

Abstract

Abstract:

In order to accurately and quickly evaluate the reliability of distribution network and provide a basis for reasonable selection of improvement measures, a reliability evaluation and influencing factor analysis model based on empowerment and improved grey correlation analysis is constructed. Firstly, the G1-CRITIC method (Order relation analysis method-criteria importance though intercrieria correlation) and the least squares-based empowerment model are used to determine the comprehensive reliability evaluation index. Secondly, the key factors are selected to construct the reliability influencing factor index system. Then, the dynamic resolution coefficient is introduced to enhance the data difference to make up for the shortcomings of the traditional grey correlation analysis. Combined with the idea of TOPSIS (Technique for order preference by similarity to an ideal solution), the comprehensive gray correlation degree of each influence factor relative to the reliability comprehensive evaluation index is calculated and ranked as the reference basis for reliability improvement measures. Finally, the effectiveness of the proposed method is verified by a practical example.

Key words: Distribution network reliability, empowerment, grey correlation analysis, dynamic resolution coefficient, TOPSIS

CLC Number:

TM732

WANG Mengfan, ZHENG Jianyong, MEI Fei. Research on Influencing Factors of Distribution Network Reliability Based on Combination Empowerment and Improved Grey Correlation Analysis[J]. Journal of Electrical Engineering, 2022, 17(1): 41-48.

Figures/Tables 7

References 20

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标度	说明
1.0	指标y_j_-1和指标y_j同等重要
1.2	指标y_j_-1比指标y_j稍微重要
1.4	指标y_j_-1比指标y_j明显重要
1.6	指标y_j_-1比指标y_j强烈重要
1.8	指标y_j_-1比指标y_j极端重要

配网编号	SAIDI/ (h/户·年)	SAIFI/ (次/户·年)	AENS/ (kW·h/户·年)
1	10.01	0.89	3.52
2	7.07	0.86	3.28
3	8.92	1.03	3.09
4	9.51	0.89	3.04
5	9.39	1.06	3.39
6	6.67	1.70	3.23
7	9.49	1.10	3.28
8	6.33	1.76	3.48

配网编号	X₁	X₂	X₃	X₄	X₅
1	51.33	68.11	80.34	2.86	0
2	56.51	70.17	82.05	3.96	7.92
3	61.41	72.56	88.35	4.06	21.59
4	64.82	76.25	95.00	4.15	53.91
5	75.53	94.75	85.61	3.49	0
6	78.31	95.00	88.67	4.53	27.03
7	80.15	95.00	95.00	4.53	51.52
8	85.08	95.00	95.00	4.53	65.50
配网编号	X₆	X₇	X₈	X₉
1	23.90	2.38	34.64	289.75
2	26.05	21.99	34.55	280.25
3	28.18	35.39	35.49	269.80
4	31.97	38.60	34.73	265.05
5	31.89	2.76	36.63	274.55
6	33.67	27.89	36.55	264.10
7	32.54	39.28	37.60	251.75
8	34.07	53.64	37.50	240.35

影响因素	方法1	方法2	方法3	方法4	方法5	本文方法
X₁	0.853 1	0.804 5	0.803 4	0.830 1	0.802 3	0.715 7
X₂	0.712 3	0.827 7	0.816 3	0.848 9	0.787 7	0.839 8
X₃	0.771 9	0.836 5	0.899 4	0.856 2	0.839 2	0.861 1
X₄	0.628 3	0.799 8	0.850 6	0.831 7	0.773 4	0.776 5
X₅	0.758 2	0.498 9	0.522 7	0.372 9	0.423 7	0.412 3
X₆	0.790 1	0.853 2	0.822 2	0.891 2	0.889 1	0.907 1
X₇	0.530 7	0.603 1	0.664 8	0.403 4	0.543 6	0.571 2
X₈	0.830 7	0.902 6	0.842 1	0.869 3	0.891 1	0.943 6
X₉	0.811 1	0.870 5	0.862 4	0.906 8	0.863 3	0.865 8