Hierarchical multi-time scale look-ahead CVR framework system for smart distribution system and apparatus therefor

摘要

The present invention discloses a hierarchical multi-time predictive CVR framework system and apparatus for a smart power distribution system. According to the present invention, the preservation voltage using at least one of a network topology, a predicted load, a predicted output of renewable energy generation, a load model, a voltage regulator, and operating parameters of a distributed energy resource including the renewable energy generation and energy storage system Capacitor bank in preset time unit for optimization of reduction, reactive power of the renewable energy generation, reactive / active power of the energy storage system, tap position of on-load tap-changer, allowable voltage range for optimization of preservation voltage reduction A global control unit for determining an optimum value including at least one of a threshold value of a difference from a minimum voltage and a variable for determining an on / off state of the energy storage system, and the global control unit when a voltage violation occurs for the current local voltage The local voltage is within the allowable voltage range based on a droop curve determined by using a difference threshold value from the minimum voltage, the reactive power of the renewable energy generation, and the reactive / active power of the energy storage system. A preservation voltage reduction framework system is provided that includes a local control unit that controls to approach the minimum voltage using a smart inverter of distributed energy resources.