基于多源数据交互的高渗透率主动配电网保护策略
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(1.上海电力大学电气工程学院, 上海 200090;2.上海正泰自动化软件系统有限公司, 上海 201600;3.衢州职业技术学院信息工程学院, 浙江 衢州 324002)

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通讯作者:

邓祥力(1973—),男,博士,副教授,主要从事超高压、特高压电网的继电保护、电力系统元件保护、参数辨识在电力系统中的应用以及电力系统智能调度等研究;E?mail:1964865285@qq.com

中图分类号:

TM773

基金项目:

国家自然科学基金(51777119)


Active distribution network protection strategy based on multi‑source data interaction under high permeability
Author:
Affiliation:

(1.College of Electrical Engineering,Shanghai University of Electric Power, Shanghai 200090, China; 2.Shanghai Zhengtai Automation Software System Co., Ltd., Shanghai 201600, China; 3.School of Information Engineering,Quzhou College of Technology,Quzhou 324002, China)

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    摘要:

    主动配电网中分布式电源渗透率逐步提高情况下,由于传统过电流保护的整定值预先设定,使得灵敏度降低,保护配合出现困难。为此,首先分析故障下不同类型分布式电源控制策略特点,并研究分布式电源出力、控制方式、并网点电压与故障电流之间的关系;然后,根据故障电流与电压的关系,在对主动配电网运行信息的多源数据融合方式进行研究后,提出在线自适应整定的电流保护策略;对分布式电源并网点增多且渗透率进一步提高下,改进后保护的灵敏度降低问题,利用采集的电压信息、节点导纳信息进行故障电流匹配计算以实现故障区段搜寻,为识别并切除线路故障提供依据;最后,通过PSCAD/EMTDC仿真结合MATLAB编程验证方案的有效性。

    Abstract:

    With the permeability increase of distributed power supply in active distribution network, the sensitivity is reduced and the coordination of protection is difficult due to the preset setting value of traditional over-current protection. Firstly, the characteristics of different control strategy types of distributed power supply are analyzed, and relationships among the output power, control mode, grid-connected voltage and fault current of distributed power supply are studied. Secondly, multi-source data fusion of active distribution network operation information is achieved according to the relationship between fault current and voltage, and an on-line adaptive setting strategy for current protection is then proposed. Aiming at the sensitivity reduction problem of the improved protection strategy due to the increase of grid-connected points and the further permeability of distributed power supply, the fault current matching calculation is carried out to realize the fault section searching by using the collected voltage and node admittance information. Finally, the effectiveness of the presented scheme is verified by PSCAD/EMTDC simulation combined with MATLAB programming.

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引用本文

邓祥力,葛慧宁,廖玥琳,等.基于多源数据交互的高渗透率主动配电网保护策略[J].电力科学与技术学报,2024,39(2):101-111.
DENG Xiangli, GE Huining, LIAO Yuelin, et al. Active distribution network protection strategy based on multi‑source data interaction under high permeability[J]. Journal of Electric Power Science and Technology,2024,39(2):101-111.

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  • 在线发布日期: 2024-05-29
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