A medium voltage photovoltaic power generation system with double grid connection interface with sop function

A photovoltaic power generation system and interface circuit technology, applied in the field of power systems, can solve problems such as limited capacity, and achieve the effects of improving capacity, improving economy and reliability, and improving flexibility

Active Publication Date: 2022-07-05
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 medium-voltage photovoltaic power generation system with dual grid-connected interfaces with SOP function to solve the problem of limited ability of the distribution network to accept distributed photovoltaics in the prior art

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  • A medium voltage photovoltaic power generation system with double grid connection interface with sop function
  • A medium voltage photovoltaic power generation system with double grid connection interface with sop function
  • A medium voltage photovoltaic power generation system with double grid connection interface with sop function

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Embodiment Construction

[0082] The following description and drawings sufficiently illustrate the 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, along with all available equivalents of the claims. Herein, the terms "first," "second," etc. are only used to distinguish one element from another, and do not require or imply any actual relationship or order between the 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 encompass a non-exclusive inclusion such that a structure, device or device comprising a list of elements includes not only those elements, but also others not expressly listed elements, or elements inherent to such structures, devices, or equi...

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Abstract

The invention belongs to the field of power systems, and discloses a dual grid-connected interface medium-voltage photovoltaic power generation system with SOP function. The circuit is connected to the end of the first medium voltage feeder, and is connected to the end of the second medium voltage feeder through the second grid-connected interface circuit; the first grid-connected interface circuit controls the active power output to the first medium-voltage feeder, and the second grid-connected interface circuit controls each DC bus voltage. On the basis of the structure of the photovoltaic power generation system based on the modular multi-level converter, the invention proposes a new photovoltaic power generation system with two grid-connected interfaces, so that the photovoltaic power generation system has the SOP function, and the SOP is used to significantly improve the operation and performance of the distribution network. The flexibility of dispatching greatly improves the economy and reliability of power system operation, improves the flexibility of power flow of photovoltaic power generation systems, and improves the ability of distribution networks to accept distributed photovoltaics.

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 with SOP function. Background technique [0002] Energy is the foundation of sustainable economic and social development, and an indispensable driving force for human production and life. With the increasingly prominent issues of energy security, ecological environment, and climate change, accelerating the development of new energy has become a general consensus and concerted action by the international community to promote energy transformation and development and address global climate change. As an important part of new energy, photovoltaic power generation is gradually developing from large-scale centralized grid connection to distributed grid connection. [0003] A large number of distributed power sources connected to the distribution network can bring a series of benefits such ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/38H02J3/46H02J3/26H02M5/458
CPCH02J3/381H02J3/466H02J3/26H02M5/4585H02J2300/24H02J2300/40Y02E10/56Y02E40/50Y02A30/60
Inventor 由蕤李立伟江加辉郑晓钦
Owner QINGDAO UNIV
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