Framework of a Simplified Large-Scale Source-Grid-Load Friendly Interaction System

Abstract

The framework of a simplified large-scale source-grid-load (SGL) friendly interaction system is proposed in this paper. In this simplified system, the control subordinate station (CSS) is merged into the control main station (CMS), eliminating the need to install a large number of CSS. The proposed method can not only save the cost, but also, more importantly, simplifies the control process and reduces the time required to cut off the interruptible load in the event of fault. Meanwhile, the corresponding load selection and shedding methods and processes must be also adjusted. A load shedding process for a precision load shedding system is introduced: on the basis of the classification of the load, different levels of load have been prescribed with different priorities, and the CMS formulates the corresponding load-shedding command according to the planned rules, and sends it to each load control terminal (LCT). The LCT immediately cuts off the corresponding load after receiving the command, in the shortest complete the load shedding task in time and minimizes the impact.