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Micro grid reactive power compensation cabinet

A micro-grid and compensation cabinet technology is applied in the field of micro-grid to reduce renovation costs and improve practicability.

Active Publication Date: 2019-07-09
EAST GRP CO LTD
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  • Abstract
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Problems solved by technology

[0004] Based on this, it is necessary to provide a microgrid reactive power compensation cabinet for the technical problem of how to effectively compensate reactive power

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  • Micro grid reactive power compensation cabinet
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Embodiment Construction

[0017] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0018] see figure 1 , which is a schematic structural diagram of a microgrid reactive power compensation cabinet 10 in an embodiment. A microgrid reactive power compensation cabinet 10 includes a general controller 110 , a capacitor compensation branch 120 , an Ethernet communication bus ...

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Abstract

A microgrid reactive power compensation cabinet includes a general controller, an Ethernet communication bus, a power bus, a general controller, and several capacitor compensation branches. The general controller includes a central processing unit, a display, a communication interface, and a communication conversion interface. The display, The communication interface and the communication conversion interface are respectively connected to the central processing unit; the Ethernet communication bus is connected to the communication interface; several capacitance compensation branches are connected in parallel on the power bus, and the capacitance compensation branches include intelligent switches, bidirectional thyristors, inductors and capacitors, and intelligent switches After being connected in parallel with the bidirectional thyristor, it is connected in series with the inductance and several capacitors; the intelligent switch is also respectively connected with the power bus and the Ethernet communication bus. The reactive power compensation cabinet of the above-mentioned microgrid, through the connection between the general controller and the capacitor compensation branch, realizes the unified real-time scheduling of each capacitor compensation branch by the general controller, and realizes the dynamic switching of each capacitor compensation branch, thus effectively compensating The reactive power of each node in the microgrid.

Description

technical field [0001] The invention relates to the field of micro-grid technology, in particular to a reactive power compensation cabinet for a micro-grid. Background technique [0002] At present, the reactive power compensation cabinet device in the power system has gone through different stages such as synchronous condenser, switch switching fixed capacitor, static var compensator and static var generator. Considering the technical practicality and economic cost, the power system method is still used in the microgrid. However, the capacity of the microgrid is small, the system stability is low, the load fluctuation is large, and the load reactive power ratio is large, which puts forward higher requirements for the design of the reactive power compensation cabinet in the microgrid. [0003] However, due to the small capacity of the microgrid system and the relatively large proportion of reactive power loads, in order to improve the voltage quality, reactive power compens...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/18H02J13/00
CPCH02J13/0006H02J3/1821Y04S10/22Y04S40/124Y02E40/30Y02E40/70Y02E60/00
Inventor 郭蕾汪海宁张晓安苏建徽张国荣
Owner EAST GRP CO LTD
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