Microgrid dynamic compensation control method and system based on distributed residual generator

A dynamic compensation and generator technology, applied in electrical components, circuit devices, AC network circuits, etc., can solve problems such as affecting system stability, bus voltage fluctuations, and inability to fully realize plug-and-play
CN110460100BActive Publication Date: 2021-03-09NORTH CHINA UNIVERSITY OF TECHNOLOGY +2
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
NORTH CHINA UNIVERSITY OF TECHNOLOGY
Publication Date
2021-03-09

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Abstract

The invention relates to a dynamic compensation control method and system for a microgrid based on a distributed residual error generator. The method comprises the steps of establishing a state spaceequation of the distributed residual error generator according to an obtained state space equation of the ith inverter when N inverters are connected in parallel, and obtaining a control model based on the distributed residual error generator; converting the control model based on the distributed residual error generator into a model taking disturbance di as input, calculating a dynamic compensation controller Q(s) to obtain a dynamic compensation control model based on the distributed residual error generator, and adding the dynamic compensation control model into droop control to generate acompensation control strategy so as to perform dynamic compensation control on the microgrid. The plug and play of the inverter and the load can be realized according to the invention.
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Description

technical field

[0001] The present disclosure relates to the technical field of power electronics, and in particular, to a microgrid dynamic compensation control method and system based on a distributed residual generator. Background technique

[0002] Microgrid is a cutting-edge technology emerging on the basis of new energy distributed power generation. It supports each other with the large power grid and is an effective way to improve the energy efficiency of distributed power generation. Microgrid has two operation modes: grid-connected and off-grid (island). In the grid-connected working mode, the microgrid and the medium and low voltage distribution network are connected to the grid to support each other and realize the two-way exchange of energy. In the case of external grid failure or planned islanding, the microgrid can be converted to an off-grid operation mode to supply power to important loads inside the microgrid. Since distributed micro-sources and energy sto...

Claims

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