CN203218987U - A photovoltaic grid-connected power generation control system - Google Patents

A photovoltaic grid-connected power generation control system Download PDF

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Publication number
CN203218987U
CN203218987U CN2013202308446U CN201320230844U CN203218987U CN 203218987 U CN203218987 U CN 203218987U CN 2013202308446 U CN2013202308446 U CN 2013202308446U CN 201320230844 U CN201320230844 U CN 201320230844U CN 203218987 U CN203218987 U CN 203218987U
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China
Prior art keywords
switch
grid
control system
photovoltaic
photovoltaic grid
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Expired - Lifetime
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CN2013202308446U
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Chinese (zh)
Inventor
农少安
吕振华
徐焕明
陈莉
姚崇
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JIANGMEN ELECTRIC POWER DESIGN INSTITUTE Ltd Co
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JIANGMEN ELECTRIC POWER DESIGN INSTITUTE Ltd Co
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/56—Power conversion systems, e.g. maximum power point trackers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses

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  • Supply And Distribution Of Alternating Current (AREA)
  • Photovoltaic Devices (AREA)

Abstract

Disclosed in the utility model is a photovoltaic grid-connected power generation control system. The photovoltaic grid-connected power generation control system is characterized in that the system comprises direct-current convergence boxes connected with a plurality of solar cell assemblies. Output terminals of the direct-current convergence boxes are connected with a direct-current power distribution cabinet for controlling outputting of direct currents; an output terminal of the direct-current power distribution cabinet is successively connected with a photovoltaic grid-connected inverter, a boosting transformer, and a grid-connected switch; and the other side of the grid-connected switch is connected with a power grid. Besides, the control system also includes an Ethernet switch for communication and a controller for controlling working of the direct-current power distribution cabinet, the photovoltaic grid-connected inverter, and the grid-connected switch; the direct-current power distribution cabinet, the photovoltaic grid-connected inverter, the grid-connected switch, and the controller are respectively connected to the Ethernet switch; and a remote monitoring center is connected to the Ethernet switch. The objective of the scheme is as follows: the Ethernet switch is used to carry out internal communication of the photovoltaic grid-connected power generation control system and the anti-interference capability of the system is high, thereby realizing distributed arrangement and control of photovoltaic power generation devices.

Description

一种光伏并网发电控制系统A photovoltaic grid-connected power generation control system

[技术领域][technical field]

本实用新型涉及一种光伏并网发电控制系统。The utility model relates to a photovoltaic grid-connected power generation control system.

[背景技术][Background technique]

目前，现有的光伏并网发电设备多种多样，一般控制器与受控发电转换设备采用直连方式进行通讯及控制，其抗干扰能力差，不适用于范围比较广的分布式控制。At present, there are many kinds of photovoltaic grid-connected power generation equipment. Generally, the controller and the controlled power generation conversion equipment use direct connection to communicate and control. Its anti-interference ability is poor, and it is not suitable for distributed control with a wide range.

因此，有必要解决如上问题。Therefore, it is necessary to solve the above problems.

[实用新型内容][utility model content]

本实用新型克服了上述技术的不足，提供了一种光伏并网发电控制系统，其通过以太网交换机进行通讯，抗干扰能力强，可实现光伏发电设备的分布式设置与控制。The utility model overcomes the shortcomings of the above-mentioned technologies and provides a photovoltaic grid-connected power generation control system, which communicates through an Ethernet switch, has strong anti-interference ability, and can realize distributed setting and control of photovoltaic power generation equipment.

为实现上述目的，本实用新型采用了下列技术方案：In order to achieve the above object, the utility model adopts the following technical solutions:

一种光伏并网发电控制系统，包括连接有若干个太阳能电池组件1的直流汇流箱2，所述直流汇流箱2输出端连接有用于控制直流电输出的直流配电柜3，所述直流配电柜3输出端顺次连接有光伏并网逆变器4、升压变压器5、并网开关6，所述并网开关6另一侧与电网连接，所述控制系统还包括有用于通讯的以太网交换机7和用于控制直流配电柜3、光伏并网逆变器4、并网开关6工作的控制器10，所述直流配电柜3、光伏并网逆变器4、并网开关6、控制器10分别连接在以太网交换机7上，所述以太网交换机7上还连接有远程监控中心11。A photovoltaic grid-connected power generation control system, including a DC combiner box 2 connected with several solar battery modules 1, the output end of the DC combiner box 2 is connected with a DC power distribution cabinet 3 for controlling the output of DC power, and the DC power distribution The output end of the cabinet 3 is sequentially connected to a photovoltaic grid-connected inverter 4, a step-up transformer 5, and a grid-connected switch 6. The other side of the grid-connected switch 6 is connected to the grid. The control system also includes an Ethernet network for communication. A network switch 7 and a controller 10 for controlling the work of the DC power distribution cabinet 3, the photovoltaic grid-connected inverter 4, and the grid-connected switch 6, the DC power distribution cabinet 3, the photovoltaic grid-connected inverter 4, and the grid-connected switch 6. The controllers 10 are respectively connected to the Ethernet switch 7, and the Ethernet switch 7 is also connected to a remote monitoring center 11.

所述直流汇流箱2的个数为多个。There are multiple DC combiner boxes 2 .

所述以太网交换机7采用光纤交换机。The Ethernet switch 7 is a fiber optic switch.

所述光伏并网逆变器4与升压变压器5之间设有断路器开关8，所述断路器开关8通过以太网交换机7与控制器10连接。A circuit breaker switch 8 is provided between the photovoltaic grid-connected inverter 4 and the step-up transformer 5 , and the circuit breaker switch 8 is connected to a controller 10 through an Ethernet switch 7 .

与现有技术相比，本实用新型的有益效果是：Compared with the prior art, the beneficial effects of the utility model are:

1、采用以太网交换机进行通讯，其抗干扰能力强，可实现光伏发电设备的分布式设置与控制，控制更方便。1. The Ethernet switch is used for communication, and its anti-interference ability is strong, which can realize the distributed setting and control of photovoltaic power generation equipment, and the control is more convenient.

2、直流汇流箱可以根据需要进行分布式设置，便于与太阳能电池组件连接。2. The DC combiner box can be distributed according to the needs, which is convenient to connect with the solar cell module.

3、以太网交换机采用光纤交换机，进一步增强本控制系统内部通讯的抗干扰能力，同时，提高了通讯速度。3. The Ethernet switch uses a fiber optic switch to further enhance the anti-interference ability of the internal communication of the control system, and at the same time, improve the communication speed.

[附图说明][Description of drawings]

图1是本实用新型的结构原理图。Fig. 1 is a structural principle diagram of the utility model.

[具体实施方式][Detailed ways]

以下结合附图通过实施例对本实用新型特征及其它相关特征作进一步详细说明，以便于同行业技术人员的理解：The features of the utility model and other relevant features are further described in detail below in conjunction with the accompanying drawings through the embodiments, so as to facilitate the understanding of those skilled in the art:

如图1所示，一种光伏并网发电控制系统，包括连接有若干个太阳能电池组件1的直流汇流箱2，所述直流汇流箱2输出端连接有用于控制直流电输出的直流配电柜3，所述直流配电柜3输出端顺次连接有光伏并网逆变器4、升压变压器5、并网开关6，所述并网开关6另一侧与电网连接，所述控制系统还包括有用于通讯的以太网交换机7和用于控制直流配电柜3、光伏并网逆变器4、并网开关6工作的控制器10，所述直流配电柜3、光伏并网逆变器4、并网开关6、控制器10分别连接在以太网交换机7上，所述以太网交换机7上还连接有远程监控中心11。As shown in Figure 1, a photovoltaic grid-connected power generation control system includes a DC combiner box 2 connected with several solar battery modules 1, and the output end of the DC combiner box 2 is connected with a DC power distribution cabinet 3 for controlling DC output , the output end of the DC power distribution cabinet 3 is sequentially connected to a photovoltaic grid-connected inverter 4, a step-up transformer 5, and a grid-connected switch 6, the other side of the grid-connected switch 6 is connected to the grid, and the control system also It includes an Ethernet switch 7 for communication and a controller 10 for controlling the work of the DC power distribution cabinet 3, the photovoltaic grid-connected inverter 4, and the grid-connected switch 6. The DC power distribution cabinet 3, the photovoltaic grid-connected inverter The switch 4, the grid-connected switch 6, and the controller 10 are respectively connected to an Ethernet switch 7, and the Ethernet switch 7 is also connected to a remote monitoring center 11.

在本实施例中，所述直流汇流箱2的个数为两个，可对两个相同或不同区域的太阳能电池组件1进行汇流。In this embodiment, the number of the DC combiner boxes 2 is two, which can combine two solar battery modules 1 in the same or different areas.

如上所述的以太网交换机7采用光纤交换机，进一步增强本控制系统内部通讯的抗干扰能力，同时，提高了通讯速度。As mentioned above, the Ethernet switch 7 adopts a fiber optic switch, which further enhances the anti-interference ability of the internal communication of the control system, and at the same time, improves the communication speed.

如上所述的光伏并网逆变器4与升压变压器5之间设有断路器开关8，所述断路器开关8通过以太网交换机7与控制器10连接，在光伏并网逆变器4或升压变压器5发生故障时，可断开两者之间的连接。A circuit breaker switch 8 is provided between the photovoltaic grid-connected inverter 4 and the step-up transformer 5 as described above, and the circuit breaker switch 8 is connected to the controller 10 through an Ethernet switch 7. In the photovoltaic grid-connected inverter 4 Or when the step-up transformer 5 breaks down, the connection between the two can be disconnected.

如上所述，本案保护的是一种光伏并网发电控制系统，其通过以太网交换机7进行通讯，抗干扰能力强，可实现光伏发电设备的分布式设置与控制。一切与本案结构相同的技术方案都应示为落入本案的保护范围内。As mentioned above, what this case protects is a photovoltaic grid-connected power generation control system, which communicates through the Ethernet switch 7, has strong anti-interference ability, and can realize distributed setting and control of photovoltaic power generation equipment. All technical solutions with the same structure as this case should be shown as falling within the scope of protection of this case.

Claims (4)

1. photovoltaic grid-connected generating control system, it is characterized in that: comprise the direct current header box (2) that is connected with several solar modules (1), described direct current header box (2) output is connected with the DC power distribution cabinet (3) for the output of control direct current, described DC power distribution cabinet (3) output is connected with photovoltaic combining inverter (4) in turn, step-up transformer (5), switch (6) is incorporated into the power networks, the described switch that is incorporated into the power networks (6) opposite side is connected with electrical network, described control system also includes the Ethernet switch (7) for communication and is used for control DC power distribution cabinet (3), photovoltaic combining inverter (4), the controller (10) of the switch (6) that is incorporated into the power networks work, described DC power distribution cabinet (3), photovoltaic combining inverter (4), switch (6) is incorporated into the power networks, controller (10) is connected on the Ethernet switch (7), also is connected with remote monitoring center (11) on the described Ethernet switch (7).
2. a kind of photovoltaic grid-connected generating control system according to claim 1, the number of the described direct current header box of its feature (2) is a plurality of.
3. a kind of photovoltaic grid-connected generating control system according to claim 1 and 2 is characterized in that described Ethernet switch (7) adopts optical fiber switch.
4. a kind of photovoltaic grid-connected generating control system according to claim 3, it is characterized in that being provided with killer switch (8) between described photovoltaic combining inverter (4) and the step-up transformer (5), described killer switch (8) is connected with controller (10) by Ethernet switch (7).
CN2013202308446U 2013-04-28 2013-04-28 A photovoltaic grid-connected power generation control system Expired - Lifetime CN203218987U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104079004A (en) * 2014-07-24 2014-10-01 沈阳爱易智慧能源科技有限公司 Distribution type control system for photovoltaic power generation
CN104734606A (en) * 2013-12-24 2015-06-24 珠海格力电器股份有限公司 Photovoltaic energy storage equipment and photovoltaic system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104734606A (en) * 2013-12-24 2015-06-24 珠海格力电器股份有限公司 Photovoltaic energy storage equipment and photovoltaic system
CN104079004A (en) * 2014-07-24 2014-10-01 沈阳爱易智慧能源科技有限公司 Distribution type control system for photovoltaic power generation

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Granted publication date: 20130925

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