Multi-dimensional evaluation of renewable energy plant access strategy considering node centrality

doi:10.11930/j.issn.1004-9649.202508011

Abstract

Abstract:

At present, the installed capacity of renewable energy in China is growing rapidly. However, differences of renewable energy stations in access nodes, grid connection structures, and organizational modes lead to unclear grid-integration characteristics, posing a critical challenge to power system planning. This paper uses the eigenvector centrality method to classify grid-accessible nodes, and combines different organizational modes and access structures to build typical access scenarios for simulation. An evaluation index system is established covering economy, reliability, and settlement convenience. Comparative analysis results show that short connections with fewer power flow constraints have better economic performance, with construction costs reduced by 3%~12% compared with alternative schemes. Direct connection at conventional nodes offers high reliability, yet elaborate structures are needed to improve system resilience under extreme weather conditions. In addition, Metering and liability allocation become complicated and settlement convenience declines markedly when the number of access entities exceeds four. This work provides a theoretical references for refined power system planning.

Key words: renewable energy plant, grid connection scheme, representative node, multi-dimensional characteristics, multi-entity access, extreme weather

ZHANG Yubao, GAO Yuhan, XIE Feng, XIONG Chao, HE Cuichao, LIU Hongtao, WANG Peng. Multi-dimensional evaluation of renewable energy plant access strategy considering node centrality[J]. Electric Power, 2026, 59(6): 166-178.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.202508011

https://www.electricpower.com.cn/EN/Y2026/V59/I6/166

Figures/Tables 16

References 35

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参数	值
LGJ-300/(万元·km^–1)	13.3
光伏组件/(元·MW^–1)	1419
组串式逆变器/(元·MW^–1)	200
固定钢支架/(元·吨^–1)	650
开关柜/(万元·台^–1)	18
变压器/(万元·台^–1)	200
$ {E}_{\rm price} $/(元·(MW·h)^–1)	370
r/5%	5
n/年	25
C_max/个	5

参数	值
LGJ-300/(万元·km^–1)	13.3
光伏组件/(元·MW^–1)	1419
组串式逆变器/(元·MW^–1)	200
固定钢支架/(元·吨^–1)	650
开关柜/(万元·台^–1)	18
变压器/(万元·台^–1)	200
$ {E}_{\rm price} $/(元·(MW·h)^–1)	370
r/5%	5
n/年	25
C_max/个	5

节点分类	节点编号
中枢节点	4，6，10
一般节点	2，7，8，9，12，15，22，27，28
边缘节点	1，3，5，11，13，14，16，17，18，19，20， 21，23，24，25，26，29，30

节点分类	节点编号
中枢节点	4，6，10
一般节点	2，7，8，9，12，15，22，27，28
边缘节点	1，3，5，11，13，14，16，17，18，19，20， 21，23，24，25，26，29，30

序号	场站主体组织方式		接入位置			接入结构
序号	打捆接入	多主体接入	中枢节点	一般节点	边缘节点	直接接入	串联接入	T接	Π接
1	√		√			√
2	√		√			√
3	√		√					√
4	√		√						√
5	√			√		√
6	√			√		√
7	√			√			√
8	√				√	√
9	√				√	√
10	√				√			√
11	√				√				√
12		√			√	√
13		√			√	√