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基于广域量测信息的配电网协调控制技术展望
作者:
作者单位:

1.武汉大学电气与自动化学院,湖北省武汉市 430072;2.南方电网科学研究院有限责任公司,广东省广州市 510000

作者简介:

通讯作者:

基金项目:

国家重点研发计划资助项目(2017YFB0902900)。


Prospect of Coordinated Control Technology in Distribution Network Based on Wide-area Measurement Information
Author:
Affiliation:

1.School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, China;2.Electric Power Research Institute of China Southern Power Grid,Guangzhou 510000, China

Fund Project:

This work is supported by National Key R&D Program of China (No. 2017YFB0902900).

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    摘要:

    分布式电源等电力电子设备的大规模接入,对配电网控制灵活性以及控制时间尺度提出了新的需求。配电网同步相量测量装置(D-PMU)的配备将为配电网在线监测及实时控制打开新的局面。对于D-PMU数据融入配电网量测系统后形成的新调控框架、新调控手段,提炼总结了基于广域量测信息的配电网源-网-荷协调控制技术中亟待研究的内容,包括多源数据融合背景下的分布式电源功率预测与柔性负荷建模、解决新能源功率波动与配电网电压安全问题的配电网源-网-荷快速协调控制、利用D-PMU数据快速同步特点实现的孤岛平滑切换与稳定控制等。针对上述内容,构思了相应的技术路线,对关键技术难点进行了展望,并介绍了部分技术在示范工程的应用情况。

    Abstract:

    With the large-scale access of distributed generators and other power electronic equipment to the distribution network, new requirements are brought to both control flexibility and control time scale. The configuration of distributed phasor measurement unit (D-PMU) opens a new situation for online monitoring and real-time control of the distribution network. Aiming at the new control framework and new control methods formed after the integration of D-PMU data and the distribution network measurement system, research on source-grid-load coordinated control in the distribution network based on wide-area measurement information is summarized. The research mainly includes the power prediction of distributed generators and flexible load modeling under the background of multi-source data fusion, the rapid source-grid-load coordinated control to solve the power fluctuation of new energy and the voltage security problem, and the usage of fast synchronization characteristics of D-PMU data to realize island smoothing switch and stability control, etc. According to the above content, the corresponding technical route is conceived, and the key technical difficulties are prospected. The application of some technologies in the demonstration project is introduced.

    表 2 不同光伏渗透率场景下的控制效果对比Table 2 Comparison of control effects in different photovoltaic permeability scenarios
    图1 基于广域量测信息的配电网协调控制技术研究框架Fig.1 Research framework of coordinated control technology in distribution network based on wide-area measurement information
    图2 配电网源-网-荷快速协调控制Fig.2 Source-network-load fast coordinated control in distribution network
    图3 南沙示范工程1号主变压器及馈线示意图Fig.3 Schematic diagram of No. 1 main transformer and part of feeders in Nansha demonstration project
    图4 控制前后下网点有功功率Fig.4 Comparison of active power of PCC before and after control
    图5 控制前后下网点相对功率波动Fig.5 Comparison of relative power fluctuation before and after control
    图6 控制前后电压对比Fig.6 Voltage comparison before and after control
    图 光伏出力的波动Fig. Fluctuation of photovoltaic output
    图 DVR预调节量Fig. Preset regulation of DVR
    图 馈线电压关于各节点注入有功功率灵敏度Fig. Voltage sensitivity to injected active power
    图 馈线电压关于各节点注入无功功率灵敏度Fig. Voltage sensitivity to injected reactive power
    表 3 Table 3
    表 1 各实验项下的电压变化率和功率变化率Table 1 Variation rate of voltage and power in each experiment
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引用本文

徐箭,廖思阳,魏聪颖,等.基于广域量测信息的配电网协调控制技术展望[J/OL].电力系统自动化,http://doi.org/10.7500/AEPS20190829003.
XU Jian,LIAO Siyang,WEI Congying,et al.Prospect of Coordinated Control Technology in Distribution Network Based on Wide-area Measurement Information[J/OL].Automation of Electric Power Systems,http://doi.org/10.7500/AEPS20190829003.

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  • 收稿日期:2019-08-29
  • 最后修改日期:2020-02-21
  • 录用日期:2019-12-24
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