North China Branch of State Grid Corporation of China, Beijing 100053, China
With the rapid development of new energy and the change of grid characteristics, the dispatching space of traditional adjustable resources becomes smaller. It is urgent to effectively expand the adjustable resources of power grid and promote from the traditional passive "source changing with load" mode to the collaborative " interaction between source and load " mode. Under network security requirements, this paper proposes the technical architecture and some technologies of adjustable load participating in dispatching and control of power grid without changing the structure of existing dispatching and control system of smart grid. After converged on the aggregator's operation platform, the adjustable load resources are connected to the load dispatching and control platform. A three-level business system of dispatching and control center-aggregator-adjustable load is constructed, so as to realize the interactions of monitoring, control, market and other information between dispatching and control center and aggregators, and support the load participating in the whole grid dispatching and optimization through continuous power regulation. The 168 hour closed-loop control of orderly charging piles and distributed energy storage clusters in Beijing is conducted by the North China grid, the technical route is verified to be feasible. This route helps several adjustable load aggregators participating in peak-shaving auxiliary service market of North China grid. Finally, the technical problems after large-scale adjustable load widely participating in power grid regulation are thought and prospected.
NING Jian, JIANG Changming, ZHANG Zhe, et al. Thinking and Technical Practice of Adjustable Load Resources Participating in Dispatching and Control of Power Grid[J/OL]. Automation of Electric Power Systems, http://doi. org/10.7500/AEPS20191226007.