Photovoltaic power generation system

A technology of photovoltaic power generation system and photovoltaic array, which is applied in the field of power system and can solve problems such as limited capacity

Active Publication Date: 2021-03-02
QINGDAO UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The embodiment of the present invention provides a photovoltaic power generation system to solve t

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  • Photovoltaic power generation system
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Embodiment Construction

[0076] The following description and the accompanying drawings sufficiently illustrate specific embodiments herein to enable those skilled in the art to practice them. Portions and features of some embodiments may be included in or substituted for those of other embodiments. The scope of the embodiments herein includes the full scope of the claims, and all available equivalents of the claims. Herein, the terms "first", "second", etc. are only used to distinguish one element from another element without requiring or implying any actual relationship or order between these elements. In fact the first element can also be called the second element and vice versa. Furthermore, the terms "comprising", "comprising" or any other variation thereof are intended to cover a non-exclusive inclusion such that a structure, means or apparatus comprising a series of elements includes not only those elements but also other elements not expressly listed elements, or also elements inherent in th...

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Abstract

The invention belongs to the field of power systems, and discloses a photovoltaic power generation system, which comprises a photovoltaic array, a voltage regulating device and two grid-connected interface circuits, wherein the photovoltaic array is connected with the voltage regulating device, and the voltage regulating device is connected with the tail end of a first medium-voltage feeder line through the first grid-connected interface circuit, and is connected with the tail end of a second medium-voltage feeder line through the second grid-connected interface circuit; and the first grid-connected interface circuit controls the active power output to the first medium-voltage feeder line, and the second grid-connected interface circuit controls the voltage of each direct-current bus. On the basis of the structure of the photovoltaic power generation system based on the modular multilevel converter, the novel photovoltaic power generation system with two grid-connected interfaces is provided, so that the photovoltaic power generation system has an SOP function, and the advantages that the SOP significantly improves the flexibility of operation and scheduling of a power distributionnetwork and greatly improves the economy and reliability of operation of a power system are brought into play; and the power flow flexibility of the photovoltaic power generation system is improved,and the distributed photovoltaic accepting capability of the power distribution network is improved.

Description

technical field [0001] The invention relates to the technical field of power systems, in particular to a medium-voltage photovoltaic power generation system with dual grid-connected interfaces and SOP function. Background technique [0002] Energy is the basis for sustainable economic and social development, and an indispensable power guarantee for human production and life. As issues such as energy security, ecological environment, and climate change become increasingly prominent, accelerating the development of new energy has become a common consensus and concerted action by the international community to promote energy transformation and development and respond to global climate change. As an important part of new energy, photovoltaic power generation is gradually developing from large-scale centralized grid-connected to distributed grid-connected. [0003] A large number of distributed power sources connected to the distribution network can bring a series of benefits su...

Claims

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Application Information

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IPC IPC(8): H02J3/38H02J3/46H02J3/12H02J3/36H02J3/26H02H7/26
CPCH02J3/381H02J3/466H02J3/12H02J3/36H02J3/26H02H7/26H02J2300/24H02J2300/40Y02E10/56Y02E40/50Y02E60/60Y02A30/60
Inventor 由蕤李立伟江加辉郑晓钦
Owner QINGDAO UNIV
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