A microgrid active and reactive integrated coordinated control method and device

Abstract

The invention provides an integrated coordination control method for active and reactive power of a micro grid. The integrated coordination control method includes the following steps: reading a controlled-power-source active power reference value, a controlled-power-source reactive power reference value and an important-node voltage amplitude reference value which are dispatched by a superior; reading real-time controlled-power-source active power, controlled-power-source reactive power and important-node voltage amplitude of the micro grid; calculating control flexibility of the controlled-power-source active power and the controlled-power-source reactive power to the important-node voltage amplitude; creating a secondary planning model for micro grid coordination control; solving the secondary planning model to acquire active power adjustment volume and reactive power adjustment volume of a controlled power source; outputting the active power adjustment volume and the reactive poweradjustment volume of the controlled power source after multiplying the two by a conservative coefficient. The invention further provides a corresponding control-flexibility-based integrated coordination control device for the active and reactive power of the micro grid. By the method and the device, coupling of active and reactive power adjustment in the micro grid can be improved effectively, and voltage fluctuation in the micro grid can be reduced.

Description

Technical field [0001] The invention belongs to the field of microgrid coordinated control, and relates to a microgrid active and reactive power comprehensive coordinated control method and device based on control sensitivity. Background technique [0002] Since the microgrid is usually composed of a medium and low-voltage network structure, the resistance of its line is very close to the reactance, so there is no obvious decoupling of active and reactive power during power flow control, which brings about the coordinated control of the microgrid. challenge. [0003] If the active and reactive power coordinated control is still performed independently in the traditional power grid with active power corresponding to frequency and reactive power corresponding to voltage, voltage overshoot and oscillation are likely to occur. Summary of the invention [0004] The technical problem to be solved by the present invention is to provide a microgrid active and reactive power comprehensive c...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a microgrid active and reactive comprehensive coordinated control method and device based on control sensitivity to realize microgrid Unified coordinated control of active and reactive power

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