CN113346612A - 一种基于宽带电力线载波通信技术的低压台区三相负荷不平衡模拟调整方法及系统 - Google Patents

一种基于宽带电力线载波通信技术的低压台区三相负荷不平衡模拟调整方法及系统 Download PDF

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CN113346612A
CN113346612A CN202110478708.8A CN202110478708A CN113346612A CN 113346612 A CN113346612 A CN 113346612A CN 202110478708 A CN202110478708 A CN 202110478708A CN 113346612 A CN113346612 A CN 113346612A
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mobile terminal
station area
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彭文一
田方
石堃林
吴寿长
郑文
姜永松
何明洋
肖燕
任海歌
田源
田昊仑
李毅
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Guizhou Power Grid Co Ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00004—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the power network being locally controlled
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00007—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using the power network as support for the transmission
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00016—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using a wired telecommunication network or a data transmission bus
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00022—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission
    • H02J13/00024—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission by means of mobile telephony
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00022—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission
    • H02J13/00026—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission involving a local wireless network, e.g. Wi-Fi, ZigBee or Bluetooth
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20—Smart grids as enabling technology in buildings sector
    • 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
    • Y04S40/121—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 the power network as support for the transmission
    • 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
    • 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
    • Y04S40/126—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 wireless data transmission

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  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

本发明公开了一种基于宽带电力线载波通信技术的低压台区三相负荷不平衡模拟调整方法及系统，采用目前国内最先进的低压宽带电力线载波通信技术，数据采集及台区划分、相位识别的效率更高，数据更准确；采用移动运维设备方式，节省设备投入成本；采用电量法进行负荷不平衡分析，避免了根据瞬时量调整造成频繁调整的问题；采用现场移动终端APP的分析方法，提高了工作效率。

Description

一种基于宽带电力线载波通信技术的低压台区三相负荷不平 衡模拟调整方法及系统
技术领域
本发明属于电力低压配电网三相不平衡调整技术领域，特别涉及一种基于宽带电力线载波通信技术的低压台区三相负荷不平衡模拟调整方法，还涉及一种系统，
背景技术
低压配变供出线路为三相四线，到达用户端则成为三相四线或单相两线供电共存的模式，特别在居民用电台区，绝大多数均为单相用户。由用户的电器数量不同，生活习惯不同，居住分布不同，会造成低压配变的负荷不平衡，进而影响低压配变的工作效率，使台区线损变大、重载相电压偏低和令克掉相，给电气设备运行和客户用电产生不良影响。
目前低压配网三相不平衡的常规调整方式主要有以下几种方式：
1、在变压器低压侧或低压线路上面装设不平衡补偿电容和控制开关，通过采集线路上的电压、电流数据，控制不平衡补偿电容的投切，达到三相平衡的效果。如果台区负载变化交快，补偿控制会存在切换频率过高，长期运行失效的问题，如果台区负荷比较大、供电半径大，则存在不能起到平衡的作用。
2、在低压线路上添加换相开关，根据线路负载情况自动进行换相开关下的负载切换供电相别，达到三相平衡的效果。换相开关切换负载存在切换时间，会对用户用电产生短时间的断电影响，对用户使用的对供电要求比较敏感的设备就会由于短时间供电暂停而停止工作，对个别用户会造成比较严重的后果；另外投资大，安全隐患大，不适宜推广。
3、利用电网公司目前的用电采集系统数据，查询台区的不平衡率及三相负荷情况，现场一边调整用户一边用钳形电流表测量三相电流，只能做到瞬时相对平衡，如果要做到一段时间平衡，需要工作人员现场逐一核实用户相序，并跟用户用电情况进行综合平衡，该方法主要难点在于核实用户相序工作量大，需要多次反复调整，浪费了大量的人力和时间，不利于现场作业。
4、通过用电管理系统导出台区基本信息，通过测试仪器获取公变基础数据，上传到数据服务器，通过电力载波模块将用户的相位信息及各时间点的负荷数据抄收到基础数据库，人工对公变台区外部因素进行定制，通过人工对公变台区台变运行勘察，包含对用户线路接线情况以及用户负荷特点的外部因素确定，结合台区特点进行系统调整，对各用户数据进行统计分析，拟合负荷曲线，得到最优化的调整策略。该方法需要单独建设系统，投资大，也不符合电网公司的要求，主要解决调整精准到户的问题，如果现场勘察或低压四线延伸不到位，需要在系统重新复核调整方案，未能真正解决三相负荷调整勘察工作量大的问题。
发明内容
有鉴于此，本发明的第一方面的目的是提供一种基于宽带电力线载波通信技术的低压台区三相负荷不平衡模拟调整方法。切实能够解决运维人员在处理不平衡调整问题时的具体困难，不用固定安装额外设备和系统，实现降本增效的目的。
本发明的第一方面的目的是通过以下技术方案实现的：
该种基于宽带电力线载波通信技术的低压台区三相负荷不平衡模拟调整方法，包括如下步骤：
步骤S1：从计量自动化系统导出台区用电信息；
步骤S2：将信息导入移动终端的分析系统，选择所要分析和调整的台区；
步骤S3：将宽带载波调测仪采用不停电安装方式，接到该台区集中器终端处，并通过无线通信方式连接到移动终端，移动终端通过调测仪可抄收该台区的各项信息，与导入的台区用户信息进行匹配、分类，筛选出非本台区用户、A相用户、B相用户、C相用户和三相用户，根据分类情况进行分相的月电量、日电量计算和统计，形成月电量不平衡度和上一日电量不平衡度；
步骤S4：对本台区用户的用电线路进行调相处理
根据移动终端显示的模拟调整结果和需要调整的用户信息，找到用电实际位置进行线路调相。
进一步，所述步骤S1中，按台区导出的用电信息包括但不限于台区用户档案、用户地址、资产号、倍率、表地址、月电量和上一日电量信息，一次根据需要导入单个或多个台区档案。
进一步，所述步骤S3中，采用低压宽带电力线载波通信技术中的全网同步时钟(NTB)及过零点检测技术实现台区户变关系精准识别。
进一步，所述步骤S3中，利用用户电能表的月电量和上一日电量进行三相负荷不平衡分析，通过电量法的分析和调整避免线路负荷短时不平衡造成的影响。
进一步，所述步骤S4中，如果出现该用户不具备调相施工条件时，可继续使用移动终端的分析系统重新进行模拟调整，选择用户施工，对台区一次性巡查即可完成不平衡调整工作。
进一步，所述步骤S4中，台区设备集中器通过宽带载波通信抄收台区电能表的数据，运维人员使用宽带载波调测仪临时接入台区载波通信网络，获取台区电能表运行信息及数据，数据获取及分析完成后，将调测仪取下，移动终端可进行离线数据分析。
进一步，所述移动终端包括但不限于智能手机和智能平板。
本发明的第二方面的目的是提供一种基于宽带电力线载波通信技术的低压台区三相负荷不平衡模拟调整系统，所述系统包括移动终端、宽带载波调测仪和集中器终端，从计量自动化系统导出台区用电信息并导入移动终端的分析系统，并选择所要分析和调整的台区；将宽带载波调测仪采用不停电安装方式，接到该台区集中器终端处，并通过无线通信方式连接到移动终端，移动终端通过调测仪可抄收该台区的各项信息，与导入的台区用户信息进行匹配、分类，根据分类情况进行分相的月电量、日电量计算和统计，形成月电量不平衡度和上一日电量不平衡度；根据移动终端显示的模拟调整结果和需要调整的用户信息，找到用电实际位置进行线路调相。
进一步，所述移动终端包括但不限于智能手机和智能平板。
本发明的有益效果是：
(1)采用目前国内最先进的低压宽带电力线载波通信技术，数据采集及台区划分、相位识别效率更高、数据更准确；
(2)采用移动运维设备方式，无需将设备长期安装在现场，减少现场设备运行种类，节省设备投入成本；
(3)采用电量法进行负荷不平衡分析，避免了根据瞬时量调整造成频繁调整的问题；
(4)采用现场移动终端APP的分析方法，现场模拟调整现场实施，提高了工作效率。
本发明的其他优点、目标和特征在某种程度上将在随后的说明书中进行阐述，并且在某种程度上，基于对下文的考察研究对本领域技术人员而言将是显而易见的，或者可以从本发明的实践中得到教导。本发明的目标和其他优点可以通过下面的说明书和前述的权利要求书来实现和获得。
附图说明
为了使本发明的目的、技术方案和优点更加清楚，下面将结合附图对本发明作进一步的详细描述，其中：
图1为本发明结构示意图；
图2为应用于现400V低压配电网的典型场景应用逻辑图。
具体实施方式
以下将参照附图，对本发明的优选实施例进行详细的描述。应当理解，优选实施例仅为了说明本发明，而不是为了限制本发明的保护范围。
如图1所示，本发明的一种基于宽带电力线载波通信技术的低压台区三相负荷不平衡模拟调整方法，包括如下步骤：
步骤S1：从计量自动化系统导出台区用电信息；
按台区导出的用电信息主要包含台区用户档案、用户地址、资产号、倍率、表地址、月电量和上一日电量等信息，一次根据需要导入单个或多个台区档案。
步骤S2：将信息导入移动终端的分析系统，选择所要分析和调整的台区；本实施例中，移动终端可以采用智能手机或者智能平板，分析系统做成APP安装在移动终端即可。相关的分析逻辑通过现有的软件编程技术即可实现。
步骤S3：接入宽带载波调测仪
将宽带载波调测仪采用不停电安装方式，接到该台区集中器终端处，并通过无线通信方式连接到移动终端APP，APP通过调测仪可抄收该台区的台区识别结果、相位识别结果、三相表分相月电量在内的信息，与导入的台区用户信息进行匹配、分类，筛选出非本台区用户、A相用户、B相用户、C相用户、三相用户，根据分类情况进行分相的月电量、日电量计算和统计，形成月电量不平衡度和上一日电量不平衡度，运维人员可根据不平衡情况进行用户模拟调整，达到电量模拟平衡状态，与传统负荷平衡、用户数平衡相比，该方式的精度大大提高，操作更为简便，不需要复杂建模计算。
如导入的用户电量数据存在漏抄，APP可通过调测仪进行数据补抄，台区用户数据保持完整，使模拟调整更加准确。
步骤S4：对本台区用户的用电线路进行调相处理
根据APP中显示的模拟调整结果和需要调整的用户信息，找到用电实际位置进行线路调相。如果出现该用户不具备调相施工条件时，可继续使用APP软件重新进行模拟调整，选择用户施工，对台区一次性巡查即可完成不平衡调整工作，相对去后台服务器取数据的方式更加灵活方便。
本发明充分利用低压宽带电力线载波通信具备的特色技术，结合计量系统采集的台区电能表月、日电量及客户基本信息，使用移动运维设备宽带载波调测仪进行相序等数据读取，最终由移动终端的APP软件进行数据处理与显示。运维人员通过操作APP软件，对数据信息进行排列组合，调整出最优方案，方便快捷地指导现场施工。
实施例
本发明应用于现400V低压配电网，典型场景应用逻辑图如图2所示。该系统包括移动终端、宽带载波调测仪和集中器终端，从计量自动化系统导出台区用电信息并导入移动终端的分析系统，并选择所要分析和调整的台区；将宽带载波调测仪采用不停电安装方式，接到该台区集中器终端处，并通过无线通信方式连接到移动终端，移动终端通过调测仪可抄收该台区的各项信息，与导入的台区用户信息进行匹配、分类，根据分类情况进行分相的月电量、日电量计算和统计，形成月电量不平衡度和上一日电量不平衡度；根据移动终端显示的模拟调整结果和需要调整的用户信息，找到用电实际位置进行线路调相。
台区设备集中器通过宽带载波通信抄收台区电能表的数据，运维人员使用宽带载波调测仪临时接入台区载波通信网络，获取台区电能表运行信息及数据，数据获取及分析完成后，将调测仪取下，移动终端APP可进行离线数据分析，不需要设备长期安装。
基于低压供电台区三相不平衡的现实情况和既有方法，利用电网批量推广的新的通信技术，本发明提出快速、精准、经济解决台区三相负荷不平衡调整的方法，利于现场实际操作，实用性较强的低压台区三相负荷不平衡模拟调整的方法，并通过电网公司实际批量使用，达到了预期效果，提高了现场运维人员的工作效率，有效的解决了低压台区三相负荷不平衡度问题，与现有技术相比，本发明中有以下改进之处值得注意：
(1)本发明充分利用宽带电力线载波通信技术，在步骤S3中，低压宽带电力线载波通信技术中的全网同步时钟(NTB)及过零点检测技术实现台区户变关系精准识别。
对于低压配电网，由于用户数量、电器类型、走线、负载等原因会在电力线上形成谐波和干扰，使得整个台区的电压波形在50Hz正弦波基础上，叠加不同频率、不同强度的信号，不同的台区内，叠加的信号幅度、频率在时间上会有不同的表现；尽管这些干扰信号的强度与电力线本身的50Hz信号相比十分微弱，但是通过长时间的统计，这些微小的差别经过累积，可以得出明确的台区归属。
过零点附近的电压最能体现本台区特点，台区识别需要基于该位置附近的信号进行运算，采集两个台区同相某个周期在-10v～0v范围内的波形利用NTB计时分析微秒级的差异变化。
过零点识别的核心就是分析两组台区特征的相关性。以下几种运算均可评估两组向量的相似度，通过累积多组结果，可以收敛得出正确的结果，如下所示：
a.相关运算，利用2组数据的相关性，判断相似度，用X和Y表示2组序列，用x(i)和y(i)表示2组序列中的元素，长度为n相关运算如下：
Figure BDA0003047888440000061
b.相关系数是研究变量之间线性相关程度的量；
其中，Cov(X,Y)为X与Y的协方差，Var[X]为X的方差，Var[Y]为Y的方差。方差Var[X]的定义式为：
Figure BDA0003047888440000062
Figure BDA0003047888440000063
期望值分别为E[X]与E[Y]的两个实随机变量X与Y之间的协方差Cov(X,Y)定义为：Cov(X，Y)＝E[(X-E[X])(Y-E[Y])]
CCO通过获取从节点的相关过零NTB信息，和CCO本地的过零NTB信息进行比对，分析识别从节点的相位信息，并判别从节点的零火线接线状态，针对零火线反接情况进行记录，三相从节点可以判断逆相序和断相事件。
三相电在过零点时间相差6.67ms，CC0通过采集sta上报的过零点时间和其自身各相位的过零点时间对比后，CCO判定sta的相位信息。
本发明通过快带电力线载波通信技术可获取准确的台区户变关系，有效排除不是本台区的节点负荷，通过获取用户电能表相位信息，可对用户负荷进行精准相位划分。
(2)在步骤S3中，本发明利用用户电能表的月电量和上一日电量进行三相负荷不平衡分析。通过电量法的分析和调整可以有效避免线路负荷短时不平衡造成的影响，解决调相设备或其他方法反复调整的问题。如果导入数据存在确认情况，可以利用低压宽带载波通信带宽大、速率快的优势短时间内进行现场补抄数据，分钟级完成抄表数据，减少现场等待时间，提升工作效率。
(3)本发明通过调测仪获取台区数据后，不需要服务器远程处理、协调，可在移动终端APP进行数据离线分析，运维人员可到实际用户电能表安装处，根据现场施工条件重新调整，从而实现离线分析现场调整，提升了运维人员现场可操作性，提高工作效率。
最后说明的是，以上实施例仅用以说明本发明的技术方案而非限制，尽管参照较佳实施例对本发明进行了详细说明，本领域的普通技术人员应当理解，可以对本发明的技术方案进行修改或者等同替换，而不脱离本技术方案的宗旨和范围，其均应涵盖在本发明的权利要求范围当中。

Claims (9)

1.一种基于宽带电力线载波通信技术的低压台区三相负荷不平衡模拟调整方法，其特征在于：包括如下步骤：
步骤S1：从计量自动化系统导出台区用电信息；
步骤S2：将信息导入移动终端的分析系统，选择所要分析和调整的台区；
步骤S3：将宽带载波调测仪采用不停电安装方式，接到该台区集中器终端处，并通过无线通信方式连接到移动终端，移动终端通过调测仪可抄收该台区的各项信息，与导入的台区用户信息进行匹配、分类，筛选出非本台区用户、A相用户、B相用户、C相用户和三相用户，根据分类情况进行分相的月电量、日电量计算和统计，形成月电量不平衡度和上一日电量不平衡度；
步骤S4：对本台区用户的用电线路进行调相处理；
根据移动终端显示的模拟调整结果和需要调整的用户信息，找到用电实际位置进行线路调相。
2.根据权利要求1所述的一种基于宽带电力线载波通信技术的低压台区三相负荷不平衡模拟调整方法，其特征在于：所述步骤S1中，按台区导出的用电信息包含但不限于台区用户档案、用户地址、资产号、倍率、表地址、月电量和上一日电量信息，一次根据需要导入单个或多个台区档案。
3.根据权利要求1所述的一种基于宽带电力线载波通信技术的低压台区三相负荷不平衡模拟调整方法，其特征在于：所述步骤S3中，采用低压宽带电力线载波通信技术中的全网同步时钟(NTB)及过零点检测技术实现台区户变关系精准识别。
4.根据权利要1所述的一种基于宽带电力线载波通信技术的低压台区三相负荷不平衡模拟调整方法，其特征在于：所述步骤S3中，利用用户电能表的月电量和上一日电量进行三相负荷不平衡分析，通过电量法的分析和调整避免线路负荷短时不平衡造成的影响。
5.根据权利要求1所述的一种基于宽带电力线载波通信技术的低压台区三相负荷不平衡模拟调整方法，其特征在于：所述步骤S4中，如果出现该用户不具备调相施工条件时，可继续使用移动终端的分析系统重新进行模拟调整，选择用户施工，对台区一次性巡查即可完成不平衡调整工作。
6.根据权利要求1所述的一种基于宽带电力线载波通信技术的低压台区三相负荷不平衡模拟调整方法，其特征在于：所述步骤S4中，台区设备集中器通过宽带载波通信抄收台区电能表的数据，运维人员使用宽带载波调测仪临时接入台区载波通信网络，获取台区电能表运行信息及数据，数据获取及分析完成后，将调测仪取下，移动终端可进行离线数据分析。
7.如权利要求1所述的一种基于宽带电力线载波通信技术的低压台区三相负荷不平衡模拟调整方法，其特征在于：所述移动终端包括但不限于智能手机和智能平板。
8.一种基于宽带电力线载波通信技术的低压台区三相负荷不平衡模拟调整系统，其特征在于：所述系统包括移动终端、宽带载波调测仪和集中器终端，从计量自动化系统导出台区用电信息并导入移动终端的分析系统，并选择所要分析和调整的台区；将宽带载波调测仪采用不停电安装方式，接到该台区集中器终端处，并通过无线通信方式连接到移动终端，移动终端通过调测仪可抄收该台区的各项信息，与导入的台区用户信息进行匹配、分类，根据分类情况进行分相的月电量、日电量计算和统计，形成月电量不平衡度和上一日电量不平衡度；根据移动终端显示的模拟调整结果和需要调整的用户信息，找到用电实际位置进行线路调相。
9.如权利要求8所述的一种基于宽带电力线载波通信技术的低压台区三相负荷不平衡模拟调整方法，其特征在于：所述移动终端包括但不限于智能手机和智能平板。
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