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Parallel power distribution control method for synchronous generator inverter

A technology of synchronous generators and control methods, applied in the direction of single-network parallel feeding arrangement, etc., to achieve the effect of reasonable distribution

Active Publication Date: 2017-09-08
NORTH CHINA ELECTRIC POWER UNIV (BAODING) +1
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0006] The object of the present invention is to provide a parallel power distribution control method for synchronous generator inverters, which is used to solve the problem of parallel power distribution of inverters with synchronous generator characteristics

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  • Parallel power distribution control method for synchronous generator inverter
  • Parallel power distribution control method for synchronous generator inverter
  • Parallel power distribution control method for synchronous generator inverter

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Embodiment Construction

[0049] In order to make the objectives, technical solutions and advantages of the implementation of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below in conjunction with the accompanying drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The described embodiments are part of the embodiments of the present invention, rather than all the embodiments. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention, but should not be construed as limiting the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present inventi...

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Abstract

The invention discloses a parallel power distribution control method for a synchronous generator inverter. Based on the steady-state droop characteristic of an active-frequency control strategy of a VSG, an equivalent droop coefficient which is a formula as shown in the specification is obtained; by means of setting the equivalent droop coefficient to be inversely proportional to the inverter capacity, proportional distribution of the active power of the parallel inverters is realized; by adjusting the offset of a droop curve by a distribution consistency algorithm, convergence of the per-unit value of the reactive power of each parallel inverter is realized; and reasonable active and reactive power distribution of the parallel inverters with the synchronous generator characteristic is realized. The power distribution control strategy provided by the invention has high robust performance, high reliability and good power distribution effect, and provides a feasible solution for parallel control of the inverters in the microgrid island operating mode.

Description

Technical field [0001] The invention belongs to the technical field of new energy power systems and microgrids, and specifically relates to a parallel power distribution control method of inverters with synchronous generator characteristics. Background technique [0002] With the development of society and economy, people’s requirements for power grids are getting higher and higher. In order to solve the disadvantages of traditional power grids such as centralized power supply and large environmental pollution, more and more researchers will focus on distributed generation (distributed generation). ,DG) technology. Most distributed power sources in the prior art need to use power electronic inverters as interfaces to integrate into the grid or directly supply power to loads, but distributed power sources based on power electronic inverter interfaces have almost no moment of inertia and damping characteristics, and their penetration rate is low. Continuous improvement will affect...

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Application Information

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IPC IPC(8): H02J3/46H02J3/38
CPCH02J3/38H02J3/46
Inventor 颜湘武赵佳乐张波曲伟
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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