基于广域量测信息的配电网协调控制技术展望

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

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。

With the large-scale access of distributed generators and other power electronic equipment to the distribution network,new requirements are brought about to both control flexibility and control time scale of distribution networks.The deployment of synchrophasor measurement unit for distribution network(D-PMU)opens up 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,prior 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 in the background of multi-source data fusion,the rapid source-gridload coordinated control to solve the power fluctuation of renewable 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.