CN113346615A - 一种台区的电压故障监控方法及智能物联代理装置 - Google Patents
一种台区的电压故障监控方法及智能物联代理装置 Download PDFInfo
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Abstract
本发明涉及边缘计算技术领域,具体提供了一种台区的电压故障监控方法及智能物联代理装置,旨在解决配电台区侧线路电压越限的技术问题。包括:通过本地数据采集接口采集台区内各监测终端的检测数据;基于所述台区内各监测终端的检测数据和下载的台区光伏储能电压越限控制应用程序诊断台区内光伏储能是否发生电压越限故障;若是,则利用下载的台区光伏储能电压越限控制应用程序稳定台区光伏储能电压,否则持续对台区内光伏储能进行电压越限故障诊断。该方案,通过分布式光伏和储能优化控制调节,防止配电台区侧线路电压越限,并且在不降低用户光伏发电功率的同时,满足台区电网电能质量和用户发电收益。
Description
技术领域
本发明涉及边缘计算领域,具体涉及一种台区的电压故障监控方法及智能物联代理装置。
背景技术
大量分布式光伏发电并网后,整个配电系统发展将变成有源网络,从而引起系统潮流以及电压分布的变化,尤其是电压的上升越限,并可能导致潮流到送;而且由于光伏电源的出力受天气影响较大,可能造成配电系统中电压的波动和闪变,同时大规模的光伏逆变器使用将会造成大量的电力谐波污染,给配电网电力用户带来经济损失,同时危害光伏系统安全稳定运行。
储能技术可提供备用电源、分时、调频、调峰和其他电网服务。将分布式光伏与储能技术结合可获能源利用最大化优势,尤其是可以实现夜间的持续供电,增加可用发电时间内的产出,提高电网灵活性。在分布式社区和屋顶光伏系统中,太阳能和储能技术的结合还可以减少配电网压力,推迟或减少基础设施投资。
但是随着配电台区侧光伏以及储能装置接入量不断增加,采用集中调控策略会急剧增加上行通信带宽和通信交互数据量,并给主站存储计算带来巨大压力,影响数据处理实时性和算法执行效率。智能物联代理装置广泛应用于电力物联网的边缘层,如台区侧节点。起到安全高效地连接网络和业务终端的作用,同时有效的支撑高频次数据采集及边缘计算。提高本地化算法及时处理和快速响应缓解了骨干网和后台系统的压力;优化应用性能,降低业务时延,提升业务质量和企业服务效率。
发明内容
为了克服上述缺陷,提出了本发明,以提供解决或至少部分地解决配电台区侧线路电压越限的技术问题的台区的电压故障监控方法及智能物联代理装置。
第一方面,提供一种台区的电压故障监控方法,所述台区的电压故障监控方法包括:
通过本地数据采集接口采集台区内各监测终端的检测数据;
基于所述台区内各监测终端的检测数据和下载的台区光伏储能电压越限控制应用程序诊断台区内光伏储能是否发生电压越限故障;
若是,则利用下载的台区光伏储能电压越限控制应用程序稳定台区光伏储能电压,否则持续对台区内光伏储能进行电压越限故障诊断。
优选的,所述本地数据采集接口包括:本地高速电力线载波接口或RS485接口。
优选的,所述监测终端至少包括下述之一:配变监测终端、光伏/储能采集终端、环境监测仪。
进一步的,所述配变监测终端的检测数据至少包括下述之一:配电变压器的额定容量、三相电压、三相电流、有功功率、无功功率、功率因数、频率;
所述光伏/储能采集终端的检测数据至少包括下述之一:逆变器对应的光伏板角度、额定发电功率、逆变器和储能变流器并网点电压、电流、有功功率、无功功率、功率因数;
所述环境监测仪的检测数据至少包括下述之一:温度、湿度、光照强度。
进一步的,所述台区光伏储能电压越限控制应用程序为通过移动网络在物联网平台上下载的。
进一步的,所述台区光伏储能电压越限控制应用程序包括下述四种功能模块:并网节点电压判断模块、无功容量补偿模块、实时电价计算模块、储能装置充放电模块。
进一步的,所述并网节点电压判断模块,用于若台区内逆变器和储能变流器并网点电压Ui满足Ui>Umax或Ui<Umin,则该台区内光伏储能发生电压越限故障,否则该台区内光伏储能未发生电压越限故障;
所述无功容量补偿模块,用于将并网节点无功补偿容量参考值Qref与并网节点实际无功补偿容量Qi之差作为无功补偿比例积分外环控制输入,输出外环控制参考值iqref,iqref作为电流控制内环输入值,输出dq坐标变换下PWM脉宽调制方式调制波,并利用PWM脉宽调制方式调制波控制台区内逆变器和储能变流器;
所述实时电价计算模块,用于根据台区内所有光伏并网逆变器功率之和计算并网电价,并将并网电价上传至物联网平台,以使用户收到并网电价信息;
所述储能装置充放电模块,用于将参与调节发电功率的用户的并网发电功率充电至储能装置;
其中,Umax为并网电压最大值,其值为1.07Un,Umin为并网电压最小值,其值为0.93Un,Un为并网电压标准值。
进一步的,所述基于所述台区内各监测终端的检测数据和下载的台区光伏储能电压越限控制应用程序诊断台区内光伏储能是否发生电压越限故障,包括:
根据区内逆变器和储能变流器并网点电压,并调用所述并网节点电压判断模块诊断台区内光伏储能是否发生电压越限故障。
进一步的,所述利用下载的台区光伏储能电压越限控制应用程序稳定台区光伏储能电压,包括:
若台区内光伏储能发生电压越限故障且并网节点实际无功补偿容量Qi满足Qi=Qmax,调用所述无功容量补偿模块控制台区内逆变器和储能变流器,直至Qref=Qmax;
若Qref=Qmax且Ui满足Ui>Umax,则调用所述实时电价计算模块计算并网电价,并将并网电价上传至物联网平台,以使用户收到并网电价信息,并调用所述储能装置充放电模块将参与调节发电功率的用户的并网发电功率充电至储能装置;
进一步的,所述根据台区内所有光伏并网逆变器功率之和计算并网电价,包括:
若所有光伏并网逆变器功率之和Pmppt<0.2Pn,则并网电价Mi=Mn;
若所有光伏并网逆变器功率之和Pmppt=(0.2-0.3)Pn,则并网电价Mi=0.6Mn;
若所有光伏并网逆变器功率之和Pmppt=(0.3-0.4)Pn,则Mi=0.3Mn;
若所有光伏并网逆变器功率之和Pmppt=(0.4-0.5)Pn,则Mi=0.1Mn;
若所有光伏并网逆变器功率之和Pmppt大于0.5Pn,则Mi=0.1Mn;
其中,Pn为配电变压器额定功率,Mn为平时段电价。
第二方面,提供一种台区的电压故障监控智能物联代理装置,所述台区的电压故障监控智能物联代理装置包括:
采集单元,用于通过本地数据采集接口采集台区内各监测终端的检测数据;
诊断单元,用于基于所述台区内各监测终端的检测数据和下载的台区光伏储能电压越限控制应用程序诊断台区内光伏储能是否发生电压越限故障;
稳压单元,用于若台区内光伏储能发生电压越限故障,则利用下载的台区光伏储能电压越限控制应用程序稳定台区光伏储能电压。
本发明上述一个或多个技术方案,至少具有如下一种或多种有益效果:
为了快捷、有效的解决配电台区侧线路电压越限的技术问题,本发明提供了一种台区的电压故障监控方法及智能物联代理装置,包括:通过本地数据采集接口采集台区内各监测终端的检测数据;基于所述台区内各监测终端的检测数据和下载的台区光伏储能电压越限控制应用程序诊断台区内光伏储能是否发生电压越限故障;若是,则利用下载的台区光伏储能电压越限控制应用程序稳定台区光伏储能电压,否则持续对台区内光伏储能进行电压越限故障诊断。该方案,通过分布式光伏和储能优化控制调节,防止配电台区侧线路电压越限,并且在不降低用户光伏发电功率的同时,满足台区电网电能质量和用户发电收益。
进一步的,本发明提供的技术方案降低了物联网平台或远程业务主站数据量90%以上,另外以用户收益最大化为目标,首先利用光伏/储能逆变器吸收无功功率,降低线路电网电压,并将剩余并网有功功率充电至储能装置中,并于夜间用电高峰时段优先并网放电,确保用户光伏发电收益不受影响。
附图说明
图1是根据本发明的一个实施例的台区的电压故障监控方法的主要步骤流程示意图;
图2是根据本发明的一个实施例的台区的电压故障监控智能物联代理装置的主要结构框图;
图3是本发明的一个应用场景示意图;
图4是本发明实施例中在图3所示的应用场景中实施例的台区的电压故障监控方法的主要步骤流程示意图。
具体实施方式
下面结合附图对本发明的具体实施方式作进一步的详细说明。
为使本发明实施例的目的、技术方案和优点更加清楚,下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例,都属于本发明保护的范围。
参阅附图1,图1是根据本发明的一个实施例的台区的电压故障监控方法的主要步骤流程示意图。如图1所示,本发明实施例中的台区的电压故障监控方法主要包括以下步骤:
步骤S101:通过本地数据采集接口采集台区内各监测终端的检测数据;
步骤S102:基于所述台区内各监测终端的检测数据和下载的台区光伏储能电压越限控制应用程序诊断台区内光伏储能是否发生电压越限故障,若是,则转至步骤S103,否则返回步骤S101;
步骤S103:利用下载的台区光伏储能电压越限控制应用程序稳定台区光伏储能电压。
其中,所述本地数据采集接口包括:本地高速电力线载波接口或RS485接口。
所述监测终端至少包括下述之一:配变监测终端、光伏/储能采集终端、环境监测仪。
所述配变监测终端的检测数据至少包括下述之一:配电变压器的额定容量、三相电压、三相电流、有功功率、无功功率、功率因数、频率;
所述光伏/储能采集终端的检测数据至少包括下述之一:逆变器对应的光伏板角度、额定发电功率、逆变器和储能变流器并网点电压、电流、有功功率、无功功率、功率因数;
所述环境监测仪的检测数据至少包括下述之一:温度、湿度、光照强度。
本实施例中,所述台区光伏储能电压越限控制应用程序为通过移动网络在物联网平台上下载的。
本实施例中,所述台区光伏储能电压越限控制应用程序包括下述四种功能模块:并网节点电压判断模块、无功容量补偿模块、实时电价计算模块、储能装置充放电模块。
在一个实施方式中,所述并网节点电压判断模块,用于若台区内逆变器和储能变流器并网点电压Ui满足Ui>Umax或Ui<Umin,则该台区内光伏储能发生电压越限故障,否则该台区内光伏储能未发生电压越限故障;
所述无功容量补偿模块,用于将并网节点无功补偿容量参考值Qref与并网节点实际无功补偿容量Qi之差作为无功补偿比例积分外环控制输入,输出外环控制参考值iqref,iqref作为电流控制内环输入值,输出dq坐标变换下PWM脉宽调制方式调制波,并利用PWM脉宽调制方式调制波控制台区内逆变器和储能变流器;
所述实时电价计算模块,用于根据台区内所有光伏并网逆变器功率之和计算并网电价,并将并网电价上传至物联网平台,以使用户收到并网电价信息;
所述储能装置充放电模块,用于将参与调节发电功率的用户的并网发电功率充电至储能装置;
其中,Umax为并网电压最大值,其值为1.07Un,Umin为并网电压最小值,其值为0.93Un,Un为并网电压标准值。
本实施例中,所述步骤S102,包括:
根据区内逆变器和储能变流器并网点电压,并调用所述并网节点电压判断模块诊断台区内光伏储能是否发生电压越限故障。
本实施例中,所述所述步骤S103,包括:
若台区内光伏储能发生电压越限故障且并网节点实际无功补偿容量Qi满足Qi=Qmax,调用所述无功容量补偿模块控制台区内逆变器和储能变流器,直至Qref=Qmax;
若Qref=Qmax且Ui满足Ui>Umax,则调用所述实时电价计算模块计算并网电价,并将并网电价上传至物联网平台,以使用户收到并网电价信息,并调用所述储能装置充放电模块将参与调节发电功率的用户的并网发电功率充电至储能装置;
在一个实施方式中,所述根据台区内所有光伏并网逆变器功率之和计算并网电价,包括:
若所有光伏并网逆变器功率之和Pmppt<0.2Pn,则并网电价Mi=Mn;
若所有光伏并网逆变器功率之和Pmppt=(0.2-0.3)Pn,则并网电价Mi=0.6Mn;
若所有光伏并网逆变器功率之和Pmppt=(0.3-0.4)Pn,则Mi=0.3Mn;
若所有光伏并网逆变器功率之和Pmppt=(0.4-0.5)Pn,则Mi=0.1Mn;
若所有光伏并网逆变器功率之和Pmppt大于0.5Pn,则Mi=0.1Mn;
其中,Pn为配电变压器额定功率,Mn为平时段电价。
需要指出的是,尽管上述实施例中将各个步骤按照特定的先后顺序进行了描述,但是本领域技术人员可以理解,为了实现本发明的效果,不同的步骤之间并非必须按照这样的顺序执行,其可以同时(并行)执行或以其他顺序执行,这些变化都在本发明的保护范围之内。
基于同一发明构思,本发明还提供了一种台区的电压故障监控智能物联代理装置,如图2所示,所述台区的电压故障监控智能物联代理装置包括:
采集单元,用于通过本地数据采集接口采集台区内各监测终端的检测数据;
诊断单元,用于基于所述台区内各监测终端的检测数据和下载的台区光伏储能电压越限控制应用程序诊断台区内光伏储能是否发生电压越限故障;
稳压单元,用于若台区内光伏储能发生电压越限故障,则利用下载的台区光伏储能电压越限控制应用程序稳定台区光伏储能电压。
优选的,所述本地数据采集接口包括:本地高速电力线载波接口或RS485接口。
优选的,所述监测终端至少包括下述之一:配变监测终端、光伏/储能采集终端、环境监测仪。
进一步的,所述配变监测终端的检测数据至少包括下述之一:配电变压器的额定容量、三相电压、三相电流、有功功率、无功功率、功率因数、频率;
所述光伏/储能采集终端的检测数据至少包括下述之一:逆变器对应的光伏板角度、额定发电功率、逆变器和储能变流器并网点电压、电流、有功功率、无功功率、功率因数;
所述环境监测仪的检测数据至少包括下述之一:温度、湿度、光照强度。
进一步的,所述台区光伏储能电压越限控制应用程序为通过移动网络在物联网平台上下载的。
进一步的,所述台区光伏储能电压越限控制应用程序包括下述四种功能模块:并网节点电压判断模块、无功容量补偿模块、实时电价计算模块、储能装置充放电模块。
进一步的,所述并网节点电压判断模块,用于若台区内逆变器和储能变流器并网点电压Ui满足Ui>Umax或Ui<Umin,则该台区内光伏储能发生电压越限故障,否则该台区内光伏储能未发生电压越限故障;
所述无功容量补偿模块,用于将并网节点无功补偿容量参考值Qref与并网节点实际无功补偿容量Qi之差作为无功补偿比例积分外环控制输入,输出外环控制参考值iqref,iqref作为电流控制内环输入值,输出dq坐标变换下PWM脉宽调制方式调制波,并利用PWM脉宽调制方式调制波控制台区内逆变器和储能变流器;
所述实时电价计算模块,用于根据台区内所有光伏并网逆变器功率之和计算并网电价,并将并网电价上传至物联网平台,以使用户收到并网电价信息;
所述储能装置充放电模块,用于将参与调节发电功率的用户的并网发电功率充电至储能装置;
其中,Umax为并网电压最大值,其值为1.07Un,Umin为并网电压最小值,其值为0.93Un,Un为并网电压标准值。
进一步的,所述基于所述台区内各监测终端的检测数据和下载的台区光伏储能电压越限控制应用程序诊断台区内光伏储能是否发生电压越限故障,包括:
根据区内逆变器和储能变流器并网点电压,并调用所述并网节点电压判断模块诊断台区内光伏储能是否发生电压越限故障。
进一步的,所述利用下载的台区光伏储能电压越限控制应用程序稳定台区光伏储能电压,包括:
若台区内光伏储能发生电压越限故障且并网节点实际无功补偿容量Qi满足Qi=Qmax,调用所述无功容量补偿模块控制台区内逆变器和储能变流器,直至Qref=Qmax;
若Qref=Qmax且Ui满足Ui>Umax,则调用所述实时电价计算模块计算并网电价,并将并网电价上传至物联网平台,以使用户收到并网电价信息,并调用所述储能装置充放电模块将参与调节发电功率的用户的并网发电功率充电至储能装置;
进一步的,所述根据台区内所有光伏并网逆变器功率之和计算并网电价,包括:
若所有光伏并网逆变器功率之和Pmppt<0.2Pn,则并网电价Mi=Mn;
若所有光伏并网逆变器功率之和Pmppt=(0.2-0.3)Pn,则并网电价Mi=0.6Mn;
若所有光伏并网逆变器功率之和Pmppt=(0.3-0.4)Pn,则Mi=0.3Mn;
若所有光伏并网逆变器功率之和Pmppt=(0.4-0.5)Pn,则Mi=0.1Mn;
若所有光伏并网逆变器功率之和Pmppt大于0.5Pn,则Mi=0.1Mn;
其中,Pn为配电变压器额定功率,Mn为平时段电价。
基于上述方案,本发明提供一种应用场景,如图3所示,具体实施步骤如图4所示:
步骤一:智能物联代理安装于配电室、箱式变电站、柱上综合配电箱,通过RS485接入配变监测终端,传输协议为为MQTT,采集配电变压器额定容量、当前三相电压、三相电流、有功功率、无功功率、功率因数、频率,采集频率为15分钟;通过高速电力线载波(HPLC)接入光伏/储能采集终端,该终端可内置于光伏并网逆变器也可独立模块配置安装,传输协议为DL/T 645或MQTT,采集每个逆变器对应的光伏板角度、额定发电功率等参数信息,采集逆变器和储能变流器并网点电压电压、电流、有功功率、无功功率、功率因数,采集频率为15分钟;通过RS-485接入环境监测仪,采集相关气象因子温度、湿度、光照强度。
步骤二:台区光伏储能电压越限控制策略在嵌入式开发平台完成开发后,经Linux编译器编译成.tar或.voa文件格式,经过软件检测机构检测后上线至物联网平台或远程业务主站,物联网平台具备APP下载、运行、下线等管理功能,智能物联代理装置通过4G/5G接入物联网平台,交互协议采用MQTT协议,远程下载台区光伏储能电压越限控制APP并运行。
步骤三:台区光伏储能电压越限控制APP包括并网节点电压判断、无功容量补偿、实时电价计算、储能装置充放电四部分功能。智能物联代理根据逆变器并网点电压判断电压是否越限,如果Ui>Umax,其中Umax=1.1Un,则启动电压越限控制APP。
步骤四:计算最大无功补偿容量Qmax=Ppv*0.95。其中,Ppv为光伏并网点的有功功率;而当前无功补偿容量参考值Qref=Ppv*tan(φ+step1)=Ptanarccos(φ+step1),其中φ为功率因数,step为步进参数,每次step变化为0.01。Qi为并网节点实际计算的无功补偿容量,Qref与Qi之差作为无功补偿比例积分外环控制输入,输出外环控制参考值iqref;iqref作为电流控制内环输入值,最终输出dq坐标变换下PWM脉宽调制方式调制波。Step变化一次,则判断一次Ui是否Ui<Umax,直至Qref=Qmax,电压降低若Ui仍Ui>Umax,则智能物联代理根据配电台区负荷、并网功率等数据计算实时电价。
步骤五:根据并网功率计算分时电价模型,电价模型参考负荷率峰谷电价模型。相关模型结果如下:发电功率Pmppt<0.2Pn,其中Pmppt是所有光伏并网逆变器功率之和,Pn为配电变压器额定功率,电价Mi=Mn,Mn为平时段电价;Pmppt=(0.2-0.3)Pn时,Mi=0.6Mn,并将此时并网电价Mi上传至物联网平台,并将信息推送至用户,用户可选择参与调节发电功率,选择将多余发电功率充电至储能装置;Pmppt=(0.3-0.4)Pn时,Mi=0.3Mn;Pmppt=(0.4-0.5)Pn时,Mi=0.1Mn;Pmppt大于0.5Pn,Mi为—0.1Mn。
步骤六:以图3中三相逆变器并网为例,光伏逆变器1,2,3并网功率额定值为10KW,储能变流器额定功率值为10kW,输入储能功率值为Pi=k(Ui-Uqi-Umax-step2),其中Ui为智能物联代理采集的并网电压值,Uqi为Qref=Qmax时产生的压降,step2为调整系数,调整系数为0.5,k值取10。储能变流器工作于直流恒压充电方式,Pi作为功率外环给定量参考值,将剩余发电功率充电至储能装置,直至电网电压达到标准值Un。设定20:00-24:00为用电高峰,此时台区电价恢复正常,智能物联代理与储能变流器交互,启动放恒功率放电策略。
本领域内的技术人员应明白,本申请的实施例可提供为方法、系统、或计算机程序产品。因此,本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且,本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本申请是参照根据本申请实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器,使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中,使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品,该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上,使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理,从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
最后应当说明的是:以上实施例仅用以说明本发明的技术方案而非对其限制,尽管参照上述实施例对本发明进行了详细的说明,所属领域的普通技术人员应当理解:依然可以对本发明的具体实施方式进行修改或者等同替换,而未脱离本发明精神和范围的任何修改或者等同替换,其均应涵盖在本发明的权利要求保护范围之内。
Claims (11)
1.一种台区的电压故障监控方法,其特征在于,所述方法包括:
通过本地数据采集接口采集台区内各监测终端的检测数据;
基于所述台区内各监测终端的检测数据和下载的台区光伏储能电压越限控制应用程序诊断台区内光伏储能是否发生电压越限故障;
若是,则利用下载的台区光伏储能电压越限控制应用程序稳定台区光伏储能电压,否则持续对台区内光伏储能进行电压越限故障诊断。
2.如权利要求1所述的方法,其特征在于,所述本地数据采集接口包括:本地高速电力线载波接口或RS485接口。
3.如权利要求1所述的方法,其特征在于,所述监测终端至少包括下述之一:配变监测终端、光伏/储能采集终端、环境监测仪。
4.如权利要求3所述的方法,其特征在于,所述配变监测终端的检测数据至少包括下述之一:配电变压器的额定容量、三相电压、三相电流、有功功率、无功功率、功率因数、频率;
所述光伏/储能采集终端的检测数据至少包括下述之一:逆变器对应的光伏板角度、额定发电功率、逆变器和储能变流器并网点电压、电流、有功功率、无功功率、功率因数;
所述环境监测仪的检测数据至少包括下述之一:温度、湿度、光照强度。
5.如权利要求4所述的方法,其特征在于,所述台区光伏储能电压越限控制应用程序为通过移动网络在物联网平台上下载的。
6.如权利要求5所述的方法,其特征在于,所述台区光伏储能电压越限控制应用程序包括下述四种功能模块:并网节点电压判断模块、无功容量补偿模块、实时电价计算模块、储能装置充放电模块。
7.如权利要求4所述的方法,其特征在于,所述并网节点电压判断模块,用于若台区内逆变器和储能变流器并网点电压Ui满足Ui>Umax或Ui<Umin,则该台区内光伏储能发生电压越限故障,否则该台区内光伏储能未发生电压越限故障;
所述无功容量补偿模块,用于将并网节点无功补偿容量参考值Qref与并网节点实际无功补偿容量Qi之差作为无功补偿比例积分外环控制输入,输出外环控制参考值iqref,iqref作为电流控制内环输入值,输出dq坐标变换下PWM脉宽调制方式调制波,并利用PWM脉宽调制方式调制波控制台区内逆变器和储能变流器;
所述实时电价计算模块,用于根据台区内所有光伏并网逆变器功率之和计算并网电价,并将并网电价上传至物联网平台,以使用户收到并网电价信息;
所述储能装置充放电模块,用于将参与调节发电功率的用户的并网发电功率充电至储能装置;
其中,Umax为并网电压最大值,其值为1.07Un,Umin为并网电压最小值,其值为0.93Un,Un为并网电压标准值。
8.如权利要求7所述的方法,其特征在于,所述基于所述台区内各监测终端的检测数据和下载的台区光伏储能电压越限控制应用程序诊断台区内光伏储能是否发生电压越限故障,包括:
根据区内逆变器和储能变流器并网点电压,并调用所述并网节点电压判断模块诊断台区内光伏储能是否发生电压越限故障。
9.如权利要求7所述的方法,其特征在于,所述利用下载的台区光伏储能电压越限控制应用程序稳定台区光伏储能电压,包括:
若台区内光伏储能发生电压越限故障且并网节点实际无功补偿容量Qi满足Qi=Qmax,调用所述无功容量补偿模块控制台区内逆变器和储能变流器,直至Qref=Qmax;
若Qref=Qmax且Ui满足Ui>Umax,则调用所述实时电价计算模块计算并网电价,并将并网电价上传至物联网平台,以使用户收到并网电价信息,并调用所述储能装置充放电模块将参与调节发电功率的用户的并网发电功率充电至储能装置。
10.如权利要求7所述的方法,其特征在于,所述根据台区内所有光伏并网逆变器功率之和计算并网电价,包括:
若所有光伏并网逆变器功率之和Pmppt<0.2Pn,则并网电价Mi=Mn;
若所有光伏并网逆变器功率之和Pmppt=(0.2-0.3)Pn,则并网电价Mi=0.6Mn;
若所有光伏并网逆变器功率之和Pmppt=(0.3-0.4)Pn,则Mi=0.3Mn;
若所有光伏并网逆变器功率之和Pmppt=(0.4-0.5)Pn,则Mi=0.1Mn;
若所有光伏并网逆变器功率之和Pmppt大于0.5Pn,则Mi=0.1Mn;
其中,Pn为配电变压器额定功率,Mn为平时段电价。
11.一种台区的电压故障监控智能物联代理装置,其特征在于,所述装置包括:
采集单元,用于通过本地数据采集接口采集台区内各监测终端的检测数据;
诊断单元,用于基于所述台区内各监测终端的检测数据和下载的台区光伏储能电压越限控制应用程序诊断台区内光伏储能是否发生电压越限故障;
稳压单元,用于若台区内光伏储能发生电压越限故障,则利用下载的台区光伏储能电压越限控制应用程序稳定台区光伏储能电压。
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