CN104317264A - 一种分布式太阳能光伏系统 - Google Patents
一种分布式太阳能光伏系统 Download PDFInfo
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
- G05B19/4185—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by the network communication
- G05B19/4186—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by the network communication by protocol, e.g. MAP, TOP
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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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
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- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
- Y04S10/123—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation the energy generation units being or involving renewable energy sources
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Abstract
本发明提供一种分布式太阳能光伏系统,包括太阳能光伏阵列、光伏发电并网逆变器、负载、电力载波数传模块、无线通信模块以及远程控制平台,太阳能光伏阵列和光伏发电并网逆变器均与电力载波数传模块连接,电力载波数传模块通过电力线与远程控制平台连接实现数据交换,太阳能光伏阵列和光伏发电并网逆变器均与无线通信模块连接,无线通信模块通过无线传输媒介与远程控制平台连接实现数据交换。电力线载波通信和无线通信技术在分布式光伏系统的控制上具有很强的互补性,本发明即利用电力线载波通信和无线通信的互补性,实现对分布式光伏系统更稳定可靠的智能控制,系统控制的功能可拓展性更强。
Description
技术领域
本发明属于太阳能光伏应用领域,具体涉及一种分布式太阳能光伏系统。
背景技术
目前,各种通信方式的控制系统被广泛的应用于分布式电网的智能控制,以提高系统运行的智能化,减少系统运行时人力物力的投入。电力线载波通讯和无线通讯是其中两种较为常见的通讯控制方式,但它们在实现系统的控制上各有利弊。电力线载波(power line cartier,PLC)通信利用电力线作为信息传输媒介,并通过载波方式将模拟或数字信号进行高速传输的技术进行语音或数据传输。电力线网络的性质决定了电力线载波通讯的优势是不言而喻的。电力线网络覆盖面积大,任何办公室、家庭、公共场所都有电力线网络,不用重新铺设线路,即不用为线路的铺设花费额外的资金,其成本仅限于各接点设备。与铺设专用线路相比大大节约了成本,且可保证通信线路的高可靠度,接点设备的电源可方便地获得。
但电力线载波通讯存在以下缺点:
1)配电变压器对电力载波信号有阻隔作用,所以电力载波信号只能在一个配电变压器区域范围内传送;
2)三相电力线间有很大信号损失(10dB-30dB);
3)电力线存在本身固有的脉冲干扰。目前使用的交流电有50HZ和60HZ,其周期为20ms和16.7ms,在每一交流周期中,出现两次峰值,两次峰值会带来两次脉冲干扰,即电力线上有固定的100HZ或120HZ脉冲干扰,干扰时间约2ms;
4)电力线对载波信号造成高削减。当电力线上负荷很重时,线路阻抗可达1欧姆以下,造成对载波信号的高削减。
而对于无线通信技术则具有如下优点:
1)不需要受线的限制,具有一定的移动性,可以在移动状态下通过无线连接进行通信,施工难度低;
2)无线通信设备抗干扰,实测传输距离2700m。如果要更远的距离可以加室外天线来弥补传输距离的不足;
3)适应性好,线通讯的局限性太大,在碰到一些特殊的应用环境,比如碰到山地、湖泊、林区等特殊的地理环境或是移动物体等布线比较困难的应用环境的时候,将对有线网络的布线工程有着极强的制约力,只要用无线数传模块建立专用无线数据传输方式即可不受这些限制;
4)扩展性好,在用户组建好一个通讯网络之后,经常由于系统的需要增加新的设备。假如采用有线的方式,需要重新的布线,施工比较麻烦,而且还有可能破坏原来的通讯线路;
5)设备维护上更轻易实现,有线通讯链路的维护需沿线路检查,出现故障时,一般很难及时找出故障点,而采用无线数传模块建立专用无线数据传输方式只需维护数传模块,出现故障时则能快速找出原因,恢复线路正常运行。
发明内容
本发明要解决的技术问题是提供一种分布式太阳能光伏系统,它能够实现更稳定可靠的控制。
为了解决上述技术问题,本发明的技术方案为:
一种分布式太阳能光伏系统,包括太阳能光伏阵列、光伏发电并网逆变器、负载、电力载波数传模块、无线通信模块以及远程控制平台,太阳能光伏阵列和光伏发电并网逆变器均与电力载波数传模块连接,太阳能光伏阵列电压电流信息和光伏发电并网逆变器工作信息传输到电力载波数传模块,电力载波数传模块通过电力线与远程控制平台连接实现数据交换,太阳能光伏阵列和光伏发电并网逆变器均与无线通信模块连接,太阳能光伏阵列电压电流信息和光伏发电并网逆变器工作信息传输到无线通信模块,无线通信模块通过无线传输媒介与远程控制平台连接实现数据交换。
上述分布式太阳能光伏系统,无线传输媒介为GPRS、CDMA或3G-Internet。
太阳能光伏阵列和光伏发电并网逆变器均与电力载波数传模块连接,电力载波数传模块接受太阳能光伏阵列电压电流信息和光伏发电并网逆变器工作信息,然后通过电力线与远程控制平台连接实现数据交换。太阳能光伏阵列和光伏发电并网逆变器均与无线通信模块连接,无线通信模块接受太阳能光伏阵列电压电流信息和光伏发电并网逆变器工作信息,然后通过无线传输媒介与远程控制平台连接实现数据交换。电力线载波通信和无线通信技术在分布式光伏系统的控制上具有很强的互补性,本发明即利用电力线载波通信和无线通信的互补性,实现对分布式光伏系统更稳定可靠的智能控制,系统控制的功能可拓展性更强。
附图说明
下面结合附图对本发明进一步详细的说明:
图1为本发明的原理结构图。
图中:1太阳能光伏阵列,2光伏发电并网逆变器,4无线通信模块,5电力载波数传模块,6电力线,7无线传输媒介,8控制平台。
具体实施方式
如图1所示,分布式太阳能光伏系统包括太阳能光伏阵列1、光伏发电并网逆变器2、负载、电力载波数传模块5、无线通信模块4以及远程控制平台8。太阳能光伏阵列和光伏发电并网逆变器均与电力载波数传模块连接,太阳能光伏阵列电压电流信息和光伏发电并网逆变器工作信息传输到电力载波数传模块,电力载波数传模块通过电力线6与远程控制平台连接实现数据交换。太阳能光伏阵列和光伏发电并网逆变器均与无线通信模块连接,太阳能光伏阵列电压电流信息和光伏发电并网逆变器工作信息传输到无线通信模块,无线通信模块通过无线传输媒介7与远程控制平台连接实现数据交换。
具体地,无线传输媒介为GPRS、CDMA或3G-Internet。
Claims (2)
1.一种分布式太阳能光伏系统,其特征在于:包括太阳能光伏阵列、光伏发电并网逆变器、负载、电力载波数传模块、无线通信模块以及远程控制平台,太阳能光伏阵列和光伏发电并网逆变器均与电力载波数传模块连接,太阳能光伏阵列电压电流信息和光伏发电并网逆变器工作信息传输到电力载波数传模块,电力载波数传模块通过电力线与远程控制平台连接实现数据交换,太阳能光伏阵列和光伏发电并网逆变器均与无线通信模块连接,太阳能光伏阵列电压电流信息和光伏发电并网逆变器工作信息传输到无线通信模块,无线通信模块通过无线传输媒介与远程控制平台连接实现数据交换。
2.根据权利要求1所述的分布式太阳能光伏系统,其特征在于:无线传输媒介为GPRS、CDMA或3G-Internet。
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CN105515207A (zh) * | 2016-02-17 | 2016-04-20 | 阳光电源股份有限公司 | 一种电池板监控系统的数据上传方法及该电池板监控系统 |
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