Wind-energy/ solar-energy/ storage/ ocean-current-energy new-energy isolated network stabilization operation integration control system and method thereof

Abstract

The invention relates to the new-energy distributed power generation operation control and aims at providing a wind-energy / solar-energy / storage / ocean-current-energy new-energy isolated network stabilization operation integration control system and a method thereof. In the system, an energy storage apparatus and a new energy generator set are merged into an alternative current (ac) bus power grid through grid-connected convertors which are respectively configured in the energy storage apparatus and the new energy generator set. The each generator set and the energy storage apparatus are configured with monitoring apparatuses which is equipped with CAN interfaces and Ethernet network interfaces. The each monitoring apparatus is connected with the grid-connected convertor corresponding to the monitoring apparatus through a CAN bus. Simultaneously, information interaction can be realized through connection of the Ethernet and a central integration control unit. In the invention, a real-time Ethernet field bus technology is used to change new-energy isolated power generation into distributed concentrated scheduled orderly power generation. A stabilization control problem of clearance-type power supply can be partially solved. A computer network control technology, an intelligent scheduling control technology, a real time synchronization communication technology and a modern high-efficient grid-connected converting technology are combined. The system possesses flexible control, good stability, good redundancy and the like.

Description

technical field [0001] The invention relates to the field of stable operation control of new energy distributed power generation, especially suitable for the stable operation control of new energy isolated grids with small and medium-sized wind and solar storage (flow) as the main source of power generation, and can overcome the difficulty of traditional SCADA systems in meeting the random changes in new energy. The isolated grid dynamic real-time centralized control problem is the combination of advanced network control technology and power grid stability dispatching control technology. It specifically relates to a networked centralized control system, a grid-connected monitoring and control device and a control algorithm. Background technique [0002] With the continuous development of the power system, especially the increase in the proportion of new energy incorporated into the grid, it will become increasingly difficult to meet the real-time requirements by relying on t...

AI Technical Summary

Problems solved by technology

However, since the power generation device of the new energy grid system mainly relies on power electronic converter technology and devices, and the power electronic converter device is usually a constant voltage source or constant current source, especially the change of the load is difficult to self-detect, so the traditional P The / f control method is difficult to meet the requirements of fast and stable control of the power grid, and it is difficult to meet the requirements of stable operation of new energy island power grids only by relying on power system steady-state / quasi-steady-state dispatch control

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