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STATCOM/BESS microgrid collaborative control method and system based on P-DPC

A collaborative control, microgrid technology, applied in flexible AC transmission systems, electrical components, circuit devices, etc., can solve the problems of insufficient reactive power control, large reference power error, etc., to achieve good power tracking control and rapid power adjustment, The output power fluctuation is small, and the effect of improving the prediction accuracy

Active Publication Date: 2018-10-16
ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
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Problems solved by technology

However, in order to simplify the algorithm, this control method, which is mostly used in PWM rectifiers, often sets the reactive power to zero and then controls it. In the microgrid system with STATCOM / BESS devices, it is necessary to comprehensively consider the active power and reactive power. Therefore, this control method will lead to insufficient control of reactive power, and the error of the linear interpolation used in this control method to predict the reference power is relatively large

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  • STATCOM/BESS microgrid collaborative control method and system based on P-DPC

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[0022] Below with reference to accompanying drawing, through the description of embodiment, the specific embodiment of the present invention such as the shape of each component involved, structure, mutual position and connection relationship between each part, the effect of each part and working principle, manufacturing process And the method of operation and use, etc., are described in further detail to help those skilled in the art have a more complete, accurate and in-depth understanding of the inventive concepts and technical solutions of the present invention.

[0023] A P-DPC-based STATCOM / BESS microgrid collaborative control method, the method steps comprising:

[0024] Step 1: Establish the mathematical model of STATCOM / BESS. The accuracy of the STATCOM / BESS mathematical model is the basis for studying the STATCOM / BESS operating characteristics and controller design. The establishment of an accurate mathematical model for the STATCOM / BESS overall device is a necessary ...

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Abstract

The invention discloses an improved control method and system for a STATCOM / BESS device in a microgrid, belonging to the field of power quality optimization. A STATCOM is connected between a power output end and a load of the power grid , and battery packs are connected in parallel at both ends of the voltage inverter in STATCOM to form STATCOM / BESS, and the power output end is sequentially connected with an instantaneous power calculation module, a power prediction module, and an SVPWM modulation module. The output end of the SVPWM modulation module outputs a target vector signal to drive the three-phase bridge arm in the STATCOM. The control method improves the STATCOM / BESS device in the microgrid, so that the STATCOM / BESS system has small output power fluctuation, stable DC side voltage, good power tracking control and fast power adjustment capability.

Description

technical field [0001] The invention belongs to the field of power quality optimization, and relates to a microgrid power quality optimization and control method, specifically an improved control method and system for a STATCOM / BESS device in a microgrid. Background technique [0002] Distributed microgrid technology, as one of the key technologies of modern power systems, has attracted great attention from researchers from all over the world, and has become an important aspect of power industry research in recent years. Static synchronous compensator (STATCOM) is widely used in microgrid for its reactive power compensation ability and stable voltage function in the grid. However, the voltage source inverter in STATCOM mainly exchanges reactive power with the microgrid system during the working process, and the role of STATCOM is lacking when there is active power loss in the system. However, if the battery system (BESS) is added to the STATCOM system, it will be combined i...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/18
CPCH02J3/1842H02J2203/20Y02E40/10
Inventor 葛愿王亚迪高文根吴渊军张艳
Owner ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
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