Research on Load Capacity Evaluation System for Power Grid Regulation under Multi-market-agent Environment

With the continuous growth of new energy installation, the dispatching space of traditional power grid regulation resources is getting smaller and smaller. Effectively expending the power grid regulation resources and promoting the dispatching mode from “source with load” to “load with source” is the way for the safe operation of the power grid and the promotion of clean development. “Load Capacity Assessment” is the fifth part of the series industry standards of “Technical Specification for Grid-connected Operation and Control of Adjustable Load”. It evaluates adjustable load from four dimensions of “observable, measurable, controllable and adjustable” to ensure the safety and standardization of adjustable load resources participating in regulation. Based on the research results of “Load Capacity Assessment “, this paper constructs the load capacity evaluation system for power grid regulation under the environment of multiple market players, puts forward the physical meaning and calculation method of each indicator. The load capacity evaluation system is applied to the “source-grid-load-storage” collaborative regulation demonstration project at the Southwest and Chongqing, for the first time and the effectiveness of this evaluation system for evaluating the load regulation and the “source-grid-load-storage” promotion is validated.