Microgrid island control method by mixing droop control and model predictive voltage control

A technology of voltage control and model prediction, applied to electrical components, circuit devices, AC network circuits, etc., can solve problems such as complex control system design, achieve the effect of improving response speed and reducing design difficulty

Inactive Publication Date: 2018-11-30
STATE GRID FUJIAN ELECTRIC POWER CO LTD +1
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Problems solved by technology

Compared with the traditional droop control, the voltage and current double-loop control is usually used to obtain the control signal of the microgrid inverter after the reference voltage is obtained, and the design of the control system is more complicated

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  • Microgrid island control method by mixing droop control and model predictive voltage control
  • Microgrid island control method by mixing droop control and model predictive voltage control
  • Microgrid island control method by mixing droop control and model predictive voltage control

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Embodiment Construction

[0049] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0050] see Figure 1 to Figure 2 As shown in the present invention, a microgrid islanding control method combining droop control and model predictive voltage control of the present invention specifically includes the following steps:

[0051] Step S1: as figure 1 In the main circuit system of the microgrid shown, select the parameters of the microgrid inverter system, including: determining the rated active power P output by the micr...

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Abstract

The invention relates to a microgrid island control method by mixing droop control and model predictive voltage control. The microgrid island control method by mixing the droop control and the model predictive voltage control comprises the steps that the droop control is combined with the finite control set model predictive voltage control and applied to the control over a microgrid inverter in the island state; and when an island appears in the operation process of a smart grid, the droop control technology is used for producing reference voltage output by the microgrid inverter, on the basisof reducing the complexity of a control system and design difficulty of the control system, finite control set model predictive voltage control technology is used for enabling the microgrid inverterto output the reference voltage required by the control system, and the voltage is supplies to local load. The microgrid island control method by mixing the droop control and the model predictive voltage control facilitates reducing the design difficulty and complexity of the microgrid inverter control system in the off-grid island state and reducing the inertia coefficient of the control system.

Description

technical field [0001] The invention relates to the field of off-grid islanding control of microgrid inverters, in particular to a microgrid inverter islanding control method combining droop control and finite control set model predictive voltage control. Background technique [0002] In the past ten years, with the innovation and application of new technologies in the field of power electronics, new energy power generation technology has developed rapidly around the world. The new energy power generation system is a network dominated by inverters, and the research on new energy power generation technology is also mainly on the control technology of microgrid inverters. For the new energy power generation system, according to the needs of the power grid system and the influence of random factors, it usually operates in two states of micro-grid and off-grid. The content of the patent of the present invention is aimed at the control of the micro-grid inverter in the off-grid ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38
CPCH02J3/38H02J3/388H02J2203/20
Inventor 魏海斌郭清华傅英陈晶腾易斌
Owner STATE GRID FUJIAN ELECTRIC POWER CO LTD
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