考虑规模化快充负荷的低压互联配电台区风险评估

doi:10.11930/j.issn.1004-9649.202002003

中国电力 ›› 2021, Vol. 54 ›› Issue (5): 56-64.DOI: 10.11930/j.issn.1004-9649.202002003

考虑规模化快充负荷的低压互联配电台区风险评估

沈培锋¹, 王徐延¹, 张昊亮¹, 卫志农², 徐广开², 孙国强²

1. 国网江苏省电力有限公司南京供电公司，江苏南京 210019;
2. 河海大学能源与电气学院，江苏南京 210098

收稿日期:2020-02-03 修回日期:2020-03-20 发布日期:2021-05-05
作者简介:沈培锋(1971-),男,硕士,研究员级高工,从事电力系统自动化技术研究,E-mail:sgjsnjspf@126.com;徐广开(1996-),男,通信作者,硕士研究生,从事电力系统运行与控制技术研究,E-mail:hhuxgk@163.com
基金资助:
国网江苏省电力有限公司科技项目(面向规模化电动汽车的柔性台区协同运行与控制关键技术研究及工程示范，J2019066)

Risk Assessment of Low-Voltage Interconnected Distribution Districts Considering Large-Scale Fast Charging Load

SHEN Peifeng¹, WANG Xuyan¹, ZHANG Haoliang¹, WEI Zhinong², XU Guangkai², SUN Guoqiang²

1. Nanjing Power Supply Company of State Grid Jiangsu Electric Power Co., Ltd., Nanjing 210019, China;
2. College of Energy and Electrical Engineering, Hohai University, Nanjing 210098, China

Received:2020-02-03 Revised:2020-03-20 Published:2021-05-05
Supported by:
This work is supported by Science and Technology Project of State Grid Jiangsu Electric Power Co., Ltd. (Research and Engineering Demonstration on Key Technologies of Cooperative Operation and Control of Flexible District for Large-Scale Electric Vehicle, No.J2019066).

摘要/Abstract

摘要： 提出一种基于规模化电动汽车快充负荷的配电台区风险评估方法。首先，以“停车—充电”模式为基础，考虑居民区、商业区不同的充电需求，进行电动汽车快充负荷的模拟；其次，给出配电台区中快充负荷分散接入的传统方式，以及台区低压侧互联的新型接入方式，并基于此提出AC/DC变流器、储能设备的控制策略，建立台区互联的功率模型；最后，以台区变压器为中心，提出包括配变重载、超载和切负荷成本的风险指标，建立配电台区风险评估体系。以南京市某地区示范工程作为算例，讨论分析不同拓扑结构及快充负荷规模下配电台区的安全运行风险，及储能系统的对台区支撑作用。

关键词: 台区低压互联, 电动汽车快充负荷, 风险评估, 配变超载风险, 交直流配电网

Abstract: A risk assessment method of distribution district is proposed based on large-scale electric vehicle(EV) fast charging load. Firstly, based on the "parking-charging" mode, and considering the different charging needs of residential areas and commercial areas, the EV fast charging load is simulated. Secondly, both the traditional decentralized access mode for fast charging load and the new access mode for low-voltage side interconnection in the distribution districts are given, and the control strategy for AC/DC converter and energy storage equipment is proposed, and the power model of distribution district interconnection is established. Finally, the risk indexes of distribution transformers, including heavy load, overload and load-shedding cost, are put forward, and a risk assessment system of distribution district is established. A demonstration project in Nanjing is taken as an example to analyze the operation risks of the distribution district under different topological structures and fast charging load scales, and the supporting effects of the energy storage system on the distribution district.

Key words: distribution district low-voltage interconnection, EV fast charging load, risk assessment, overload risk of distribution transformer, AC / DC distribution network

沈培锋, 王徐延, 张昊亮, 卫志农, 徐广开, 孙国强. 考虑规模化快充负荷的低压互联配电台区风险评估[J]. 中国电力, 2021, 54(5): 56-64.

SHEN Peifeng, WANG Xuyan, ZHANG Haoliang, WEI Zhinong, XU Guangkai, SUN Guoqiang. Risk Assessment of Low-Voltage Interconnected Distribution Districts Considering Large-Scale Fast Charging Load[J]. Electric Power, 2021, 54(5): 56-64.

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考虑规模化快充负荷的低压互联配电台区风险评估

Risk Assessment of Low-Voltage Interconnected Distribution Districts Considering Large-Scale Fast Charging Load

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考虑规模化快充负荷的低压互联配电台区风险评估

Risk Assessment of Low-Voltage Interconnected Distribution Districts Considering Large-Scale Fast Charging Load

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