Photovoltaic Site Selection and Capacity Determination Method for New Distribution Network Considering Multidimensional Performance Evaluation

doi:10.11930/j.issn.1004-9649.202311027

Abstract

Abstract:

This paper proposes a new distribution network photovoltaic (PV) locating and sizing method that takes into account multi-dimensional performance evaluation. First, a multi-dimensional evaluation system covering power quality, power supply capacity, and photovoltaic access effects is formed, and a combined subjective and objective assessment system is constructed. Comprehensive evaluation method of access solutions based on weight-fuzzy evaluation. Secondly, the comprehensive evaluation was organically combined with the optimized locating and sizing process to form an evaluation-selection integrated PV site selection and capacity optimization model, using the non-dominated sorting genetic algorithm-ii (NSGA-II) achieves the optimal access location and capacity acquisition under the condition of differentiated PV output throughout the year. Finally, the numerical example verification shows that the proposed method not only significantly reduces the node voltage deviation and line transmission pressure, but also has better PV access characteristics and multi-index comprehensive performance within the scope of a more comprehensive technical performance evaluation, improving the rationality of PV configuration. safety and resource efficiency, which can effectively support the development needs of new distribution networks.

Key words: locating and sizing, distributed photovoltaic, comprehensive evaluation method, new distribution network

Qifang CHEN, Ruofan LI, Mingchao XIA, Di WU, Yinchi SHAO. Photovoltaic Site Selection and Capacity Determination Method for New Distribution Network Considering Multidimensional Performance Evaluation[J]. Electric Power, 2024, 57(10): 172-178, 207.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.202311027

https://www.electricpower.com.cn/EN/Y2024/V57/I10/172

Figures/Tables 11

References 25

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方案类型	接入参数	接入点情况					评价结果
方案类型	接入参数	1	2	3	4	5	评价结果
3点接入	位置	9	13	17	—	—	76.02
3点接入	容量/kW	698	1477	1083	—	—	76.02

5点接入	位置	8	13	14	17	19	75.74
5点接入	容量/kW	640	971	400	710	400	75.74

方案类型	接入参数	接入点情况					评价结果
方案类型	接入参数	1	2	3	4	5	评价结果
3点接入	位置	9	13	17	—	—	76.02
3点接入	容量/kW	698	1477	1083	—	—	76.02

5点接入	位置	8	13	14	17	19	75.74
5点接入	容量/kW	640	971	400	710	400	75.74

指标级别		指标	评价体系指标赋权情况
指标级别		指标	主观赋权	客观赋权	组合赋权	归一化组合赋权
一级指标		A1	0.252	0.413	0.325	—
		A2	0.327	0.306	0.324	—
		A3	0.421	0.281	0.351	—
二级指标	A1	B1	0.409	0.465	0.438	0.143
		B2	0.281	0.243	0.258	0.084
		B3	0.310	0.292	0.304	0.099
	A2	B4	0.193	0.121	0.154	0.050
		B5	0.406	0.467	0.440	0.143
		B6	0.401	0.412	0.406	0.132
	A3	B7	0.272	0.321	0.307	0.107
		B8	0.222	0.292	0.268	0.094
		B9	0.190	0.021	0.065	0.023
		B10	0.316	0.366	0.360	0.125

指标级别		指标	评价体系指标赋权情况
指标级别		指标	主观赋权	客观赋权	组合赋权	归一化组合赋权
一级指标		A1	0.252	0.413	0.325	—
		A2	0.327	0.306	0.324	—
		A3	0.421	0.281	0.351	—
二级指标	A1	B1	0.409	0.465	0.438	0.143
		B2	0.281	0.243	0.258	0.084
		B3	0.310	0.292	0.304	0.099
	A2	B4	0.193	0.121	0.154	0.050
		B5	0.406	0.467	0.440	0.143
		B6	0.401	0.412	0.406	0.132
	A3	B7	0.272	0.321	0.307	0.107
		B8	0.222	0.292	0.268	0.094
		B9	0.190	0.021	0.065	0.023
		B10	0.316	0.366	0.360	0.125

评价指标	3点接入			5点接入
评价指标	固定权重法	单一模糊综合评价	本文方法	固定权重法	单一模糊综合评价	本文方法
B1	2.53	2.48	2.58	2.49	2.46	2.60
B2	2.30	2.38	2.21	2.37	2.41	2.19
B3	100.00	100.00	100.00	100.00	100.00	100.00
B4	25.00	25.00	25.00	25.00	25.00	25.00
B5	3.07	3.07	3.07	3.07	3.07	3.07
B6	2.29	2.37	2.29	2.30	2.33	2.29
B7	103.52	98.52	96.40	109.59	106.64	92.35
B8	76.90	76.90	76.90	74.88	75.67	76.90
B9	12.59	7.61	5.50	13.87	13.23	1.48
B10	5.85	3.27	2.17	9.13	7.58	0.41