配电网柔性度对分布式发电消纳的影响规律和机理分析

doi:10.11930/j.issn.1004-9649.202311092

中国电力 ›› 2024, Vol. 57 ›› Issue (10): 36-45.DOI: 10.11930/j.issn.1004-9649.202311092

• 面向现代智慧配电网的二次系统规划 • 上一篇下一篇

配电网柔性度对分布式发电消纳的影响规律和机理分析

梁海深¹(), 王康丽¹(), 宋红宇¹(), 郝金娜¹, 肖峻²()

1. 国网天津市电力公司宝坻供电分公司，天津　301800
2. 天津天大求实电力新技术股份有限公司，天津　300392

收稿日期:2023-11-20 出版日期:2024-10-28 发布日期:2024-10-25
作者简介:梁海深（1989—），男，硕士，工程师，从事智能配电网规划运行研究，E-mail：lianghaishen@126.com
王康丽（1991—），女，硕士，工程师，从事“双碳”与新型电力系统建设研究，E-mail：wkl_hd426@163.com
宋红宇（1990—），男，学士，工程师，从事电网运行方式分析与管理，E-mail：964934754@qq.com
肖峻（1971—），男，博士，教授，博士生导师，从事智能配电系统规划与运行技术研究，E-mail：xiaojun@tju.edu.cn
基金资助:
国网天津市电力公司科技项目（宝坻-研发-2023-01）；国家自然科学基金资助项目（基于安全边界的配电系统高效运行理论，52177105）。

Influence Rules and Mechanism Analysis of Distribution Network Flexibility Degree on Distributed Generator Accommodation

Haishen LIANG¹(), Kangli WANG¹(), Hongyu SONG¹(), Jinna HAO¹, Jun XIAO²()

1. State Grid Tianjin Baodi Electric Power Supply Company, Tianjin 301800, China
2. Tianjin Tianda Qiushi Electric Power High Technology Co., Ltd., Tianjin 300392, China

Received:2023-11-20 Online:2024-10-28 Published:2024-10-25
Supported by:
This work is supported by State Grid Tianjin Electric Power Company (No.Baodi-development-2023-01) and National Natural Science Foundation of China (Operational Theory of High Efficiency Distribution System based on Security Boundary, No.52177105)

摘要/Abstract

摘要：

电力电子柔性化和分布式发电（DG）消纳是配电网研究的2个热点问题，揭示了配电网柔性度对DG消纳的影响规律和机理。首先，介绍了配电网柔性度的概念，并改进了柔性度的定义。然后，以典型接线模式和IEEE RBTS-Bus4扩展算例为研究对象，观察随柔性度升高时DG消纳率的变化，并分析规律和机理。研究发现，配电网柔性化并非都能提升DG消纳，存在一个起效条件：智能软开关（soft open point，SOP）某一侧馈线存在DG相对负荷的盈余，同时另一侧存在DG缺额。然而满足起效条件后，消纳率和柔性度之间的规律性仍未显现。提出分析消纳提升限制条件和按SOP安装次序观察的2种方法，发现了隐藏的规律：当存在消纳提升可用空间且无SOP容量限制下，或者同一SOP安装次序下，柔性度和消纳率才具有正相关关系。发现的规律机理为指导配电网的柔性化发展和DG消纳提供了新的理论依据。

关键词: 配电网, 柔性度, 智能软开关, 分布式发电, 消纳, 规律, 机理

Abstract:

Two hot topics in distribution network research are power electronics flexibility and distributed generator (DG) accommodation. This paper revealed the influence rules and their mechanisms of distribution network flexibility degree on DG accommodation. Firstly, the concept of distribution network flexibility degree was introduced, and its definition was improved. Then, by taking typical wiring modes and the expanded IEEE RBTS-Bus4 test system as the research objects, the change in the DG accommodation ratio was observed as the flexibility degree started from 0, and the rules and mechanisms were analyzed. The results show that not all distribution network flexibility can improve DG accommodation, and there is an effective condition. In other words, there is a surplus of DG relative load in the feeder on one side of the soft open point (SOP) and a DG shortage on the other side. However, the regularity between the DG accommodation ratio and flexibility degree doesn’t appear after the effective condition is met. This paper thus proposes two approaches, namely analyzing the restriction conditions of DG accommodation increase and observing SOP installation order, and finds the hidden rules: The flexibility degree and DG accommodation ratio have a positive correlation when there is available space for DG accommodation increase, without the SOP capacity restriction, or when they are in the same SOP installation order. The rules and mechanisms found in this paper provide a new theoretical basis for guiding the flexible development and DG accommodation of distribution networks.

Key words: distribution network, flexibility degree, soft open point, distributed generator, accommodation, rule, mechanism

梁海深, 王康丽, 宋红宇, 郝金娜, 肖峻. 配电网柔性度对分布式发电消纳的影响规律和机理分析[J]. 中国电力, 2024, 57(10): 36-45.

Haishen LIANG, Kangli WANG, Hongyu SONG, Jinna HAO, Jun XIAO. Influence Rules and Mechanism Analysis of Distribution Network Flexibility Degree on Distributed Generator Accommodation[J]. Electric Power, 2024, 57(10): 36-45.

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图/表 14

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馈线	负荷功率	DG出力
馈线	负荷功率	场景1	场景2	场景3
F₁	3.0	6.0	8.0	3.0
F₂	4.0	4.0	3.0	2.0
F₃	5.0	2.0	2.0	4.0

馈线	负荷功率	DG出力
馈线	负荷功率	场景1	场景2	场景3
F₁	3.0	6.0	8.0	3.0
F₂	4.0	4.0	3.0	2.0
F₃	5.0	2.0	2.0	4.0

场景	Case	柔性度D_f	消纳率λ_DG/%
1	0	0.00	75.00
	1	0.49	94.17
	2	0.65	100.00
	3	0.77	75.00
	4	0.84	94.17
	5	1.00	100.00
	6	1.00	100.00
2	0	0.00	61.54
	1	0.49	79.23
	2	0.65	84.62
	3	0.77	69.23
	4	0.84	79.23
	5	1.00	92.31
	6	1.00	92.31
3	0	0.00	100.00
	1	0.49	100.00
	2	0.65	100.00
	3	0.77	100.00
	4	0.84	100.00
	5	1.00	100.00
	6	1.00	100.00

场景	Case	柔性度D_f	消纳率λ_DG/%
1	0	0.00	75.00
	1	0.49	94.17
	2	0.65	100.00
	3	0.77	75.00
	4	0.84	94.17
	5	1.00	100.00
	6	1.00	100.00
2	0	0.00	61.54
	1	0.49	79.23
	2	0.65	84.62
	3	0.77	69.23
	4	0.84	79.23
	5	1.00	92.31
	6	1.00	92.31
3	0	0.00	100.00
	1	0.49	100.00
	2	0.65	100.00
	3	0.77	100.00
	4	0.84	100.00
	5	1.00	100.00
	6	1.00	100.00

例外情况	原因
例外情况	可用空间不足	SOP容量限制
场景1 Case0、3	√
场景1 Case2、5	√
场景1 Case2、4	√	√
场景2 Case1、4		√
场景2 Case2、3	√

配电网柔性度对分布式发电消纳的影响规律和机理分析

Influence Rules and Mechanism Analysis of Distribution Network Flexibility Degree on Distributed Generator Accommodation

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参考文献 24

相关文章 15

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Metrics

方案编号	SOP位置	SOP台数（端口数）	柔性度D_f	消纳率λ_DG/%	方案编号	SOP位置	SOP台数（端口数）	柔性度D_f	消纳率λ_DG/%
0			0.000	78.05	27	TS1、TS14	2(2)	0.343	87.81
1	···	···	···	···	···	···	···	···	···
···	···	···	···	···	48	TS3、TS13	2(2)	0.303	85.89
3	TS3	1(2)	0.239	81.22	49	TS3、TS14	2(2)	0.320	90.05
···	···	···	···	···	···	···	···	···	···
6	TS6	1(2)	0.238	78.60	80	TS7、TS14	2(2)	0.310	86.88
7	TS7	1(2)	0.229	78.05	···	···	···	···	···
8	TS8	1(2)	0.211	78.60	89	TS9、TS13	2(2)	0.254	83.96
9	TS9	1(2)	0.189	79.28	···	···	···	···	···
10	TS10	1(2)	0.191	79.28	97	TS12、TS14	2(2)	0.252	86.88
11	TS11	1(2)	0.192	78.05	···	···	···	···	···
12	TS12	1(2)	0.219	78.05	101	TS12~14	1(3)	0.252	86.88
13	TS13	1(2)	0.203	82.72	102	TS1、TS3、TS14	3(2)	0.444	90.98
14	TS14	1(2)	0.219	86.88	103	TS1、TS4、TS6	3(2)	0.454	80.47
···	···	···	···	···	104	TS2、TS3、TS13	3(2)	0.451	86.92
19	TS1、TS6	2(2)	0.362	79.53	105	TS8、TS9、TS13	3(2)	0.327	84.51
···	···	···	···	···

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模态框（Modal）标题

配电网柔性度对分布式发电消纳的影响规律和机理分析

Influence Rules and Mechanism Analysis of Distribution Network Flexibility Degree on Distributed Generator Accommodation

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