CN112134293A - 一种站所终端公共单元及其基于边缘计算的广域自治方法 - Google Patents

一种站所终端公共单元及其基于边缘计算的广域自治方法 Download PDF

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CN112134293A
CN112134293A CN202010843943.6A CN202010843943A CN112134293A CN 112134293 A CN112134293 A CN 112134293A CN 202010843943 A CN202010843943 A CN 202010843943A CN 112134293 A CN112134293 A CN 112134293A
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broker
public unit
topology
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regional
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胡国
滕贤亮
吴海
黄琦
朱亚军
吴雨薇
徐志华
张吉
汪世平
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Nari Technology Co Ltd
NARI Nanjing Control System Co Ltd
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NARI Nanjing Control System Co Ltd
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    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
    • G—PHYSICS
    • G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
    • G16Y—INFORMATION AND COMMUNICATION TECHNOLOGY SPECIALLY ADAPTED FOR THE INTERNET OF THINGS [IoT]
    • G16Y10/00—Economic sectors
    • G16Y10/35—Utilities, e.g. electricity, gas or water
    • G—PHYSICS
    • G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
    • G16Y—INFORMATION AND COMMUNICATION TECHNOLOGY SPECIALLY ADAPTED FOR THE INTERNET OF THINGS [IoT]
    • G16Y10/00—Economic sectors
    • G16Y10/75—Information technology; Communication
    • G—PHYSICS
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    • H02J13/00028—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 involving the use of Internet protocols
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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    • H02J3/26—Arrangements for eliminating or reducing asymmetry in polyphase networks
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Abstract

本发明公开了一种站所终端公共单元及其基于边缘计算的广域自治方法，公共单元、各配电终端和传感器均与Broker建立网络连接，所有设备通过MQTT物联协议向Broker发布自身消息，以及向Broker订阅其他设备所发布的消息；公共单元向Broker订阅“拓扑”主题，区域内所有拓扑模块向Broker发布的拓扑信息被Broker推送给公共单元；公共单元在收到的各节点拓扑信息后，对现有区域拓扑模型文件进行更新；公共单元将更新后的区域拓扑模型文件上传配电主站，主站在获取各区域拓扑模型的基础上，生成整个配网的拓扑模型；公共单元通过向Broker订阅设定的主题实现区域自治功能。本发明能实现区域自治。

Description

一种站所终端公共单元及其基于边缘计算的广域自治方法
技术领域
本发明涉及配电网自动化设备技术领域，具体涉及一种站所终端公共单元及其基于边缘计算的广域自治方法。
背景技术
标准化站所终端是指符合标准化设计规范的配电自动化站所终端，是为了适应配电网自动化发展而研制，可满足当前配电网改造所需要的各种功能，能够实现配电网的测量、通信、保护、故障定位、隔离与供电恢复、配变监测数据分析、运行维护等功能。
分布式站所终端是标准化站所终端的一个分类，标准化设计按分布式结构技术路线进行，由若干个间隔单元和公共单元组成。间隔单元安装在一次间隔柜内，公共单元为独立屏柜。间隔单元和公共单元通过总线连接，相互配合，共同完成站所终端功能。
传统间隔单元具备采样测量回路、开入开出回路与对上通信接口，实时监测间隔柜的电气量信息，进行保护故障判别与处理，并将相关信息上送至公共单元。传统公共单元负责汇集各个间隔单元的遥信数据、遥测数据、保护事件、录波数据、电能量数据、运行状态等信息，并将信息传送至主站，并可下发主站的遥控指令。
目前的配电网作为能源生产和消费的一个节点，既承担能源生产，也承担能源消费，承载着能量的双向流动；同时，它直接面向客户，影响客户体验。基于我国目前配电网的情况和能源转型发展的需求，构建配电物联网是一种急需的、对配电网一种本质性的提升。配电物联网作为泛在电力物联网在配电领域的落地实践，有助于实现物联网和配电网的完美融合，实现多种能源状态的感知和优化、电力公司全业务数据统一管理，全面实现业务协同、数据贯通和统一物联管理，形成共建共治共享的能源互联网生态圈。
传统的标准化分布式站所终端公共单元由于在发展中一直面向配网传统遥测遥信遥控、故障事件信息的汇集与转发等需求，通信接口单一、通信规约和远传信息不兼容物联网需求，无法接入各类物联网传感器；同时因为对主站点对点通信，缺乏装置间互联，传统终端无法实现拓扑识别、广域自治等物联网高级功能，因此无法满足作为泛在物联网设备的要求。
配电网络覆盖广泛，结构复杂，设备种类繁多，各节点的联网和断开都会造成网络结构的变化。能否正确识别配网拓扑结构是影响电网故障诊断以及恢复的重要因素，也是配网广域自治、智能分布式馈线自动化(馈线自动化Feeder Automation，下文简称FA)实现的基础功能。传统的站所终端无法完成物联网的拓扑识别分析功能，也无法具备广域自治功能，发生故障时无法自动分析、诊断和恢复，对运维人员依赖性强；此外，现有的配网分布式FA功能对组网方式固定，且对通信延时要求高，需要敷设光纤线路，构建成本较高。利用物联网技术配合极低延时的5G通信技术，可实现灵活的无线分布式FA组网，降低成本，扩大分布式FA功能的适用范围。
发明内容
为解决现有技术中的不足，本发明提供一种站所终端公共单元及其基于边缘计算的广域自治方法，为泛在电力物联设备的接入提供多种物联网接口，解决了传统公共单元不具备物联网通信接口、无法接入各类物联网传感器的问题；通过物联网传感器等设备的接入以及对物联信息的分析与交互，实现了广域自治、智能分布式馈线自动化等功能。
为了实现上述目标，本发明采用如下技术方案：一种站所终端公共单元，包括：
CPU板、IO接口板和COM板，IO接口板与CPU板通过MII接口连接，提供开入开出、模拟量采集功能和CAN总线；COM板与CPU板通过I2C及UART接口连接，COM板上配置若干种通信模块。
进一步的，通信模块包括以下一种或多种组合：4G无线模块、蓝牙模块、LORA模块、WIFI模块、RFID模块、GPS模块、摄像头接口。
基于上述任一一项所述的站所终端公共单元的基于边缘计算的广域自治方法，包括步骤：
公共单元、各配电终端和各配电物联传感器均与Broker建立网络连接，连接成功后，所有设备通过MQTT物联协议向Broker发布自身消息，以及向Broker订阅其他设备所发布的消息；
公共单元向Broker订阅“拓扑”主题，区域内所有拓扑模块向Broker发布的拓扑信息被Broker推送给公共单元；
公共单元在收到的各节点拓扑信息后，对现有区域拓扑模型文件进行更新；
公共单元将更新后的区域拓扑模型文件上传配电主站，主站在获取各区域拓扑模型的基础上，生成整个配网的拓扑模型；
公共单元通过向Broker订阅设定的主题实现区域自治功能。
进一步的，拓扑模块安装于区域内线路各节点处，拓扑信息包括节点的地理位置、设备类型、节点编号和更新时间。
进一步的，区域自治功能包括线损分析，线损分析方法包括步骤：
公共单元向Broker订阅线损主题，区域内所有独立线损模块及包含线损功能的配电终端向Broker发布的线损信息被Broker推送给公共单元；
公共单元根据拓扑模型中的节点上下游关系，对各节点进行逐个的线损分析计算，当某节点电量与上下游电量计算差值超出设定阈值，则认定为线损异常；
公共单元分析判定是否存在三相不平衡情况和需要无功补偿的情况，将线损异常情况及分析结果上报主站，同时向Broker发布相关电压和无功信息。
进一步的，区域自治功能包括馈线自动化分析，馈线自动化分析方法包括步骤：
公共单元装置向Broker订阅“运行状态数据”、“故障事件”主题，区域内所有配电终端向Broker发布的运行状态数据和故障事件被Broker推送给公共单元装置；
当区域中线路某点出现故障，公共单元收到各相关终端通过物联协议发布的电气特征信息；
公共单元根据所有节点发布的电流方向、开关位置和故障动作信息，按照节点顺序对区域馈线的拓扑模型逐节点分析，确定故障区域；
公共单元装置向Broker发布跳闸主题信息，完成故障区域的隔离；
故障区域隔离后，公共单元按照拓扑模型中节点顺序依次向Broker发布合闸主题信息，恢复故障点前后区域的供电。
进一步的，故障处理完成后，公共单元主动向主站云平台上送处理结果。
本发明所达到的有益效果：本发明公共单元在融合传统站所终端公共单元功能的基础上，融合了物联网通信技术，作为物联网架构底层——感知层的汇聚设备，为低压配电台区设备接入泛在电力物联网提供统一接口。
本公共单元融合物联网通信技术，支持配网的区域内设备互联互通，数据共享，为进一步的配网拓扑识别、区域自治、分布式故障处理等高级功能奠定了基础。
本发明公共单元在物联网通信接入的基础上，实现了配网拓扑识别与分析功能，可协助配网运维人员及时掌握配网运行方式，缩短故障定位及处理时间；并进一步实现了配网广域自治，做到了对区域内的自助管理、故障准确定位、精准隔离和非故障区供电快速恢复，有效减少停电时间，减轻调度、运维人员工作量，提高供电效率，达到了广域自治的目的。
附图说明
图1是本发明公共单元硬件框图；
图2是配网广域自治网络示意图；
图3是配网广域自治中的智能分布式FA示意图。
具体实施方式
下面结合附图对本发明作进一步描述。
实施例1：
如图1所示，一种融合物联网通信技术的站所终端公共单元，包括：
CPU板，板上资源包括CPU处理器(基于NXP公司的LS1043A，四核，ARM Cortex-A53架构，主频1.6GHz)、4GB的DDR4内存、8GB的eMMC存储器；CPU板还包括4路以太网接口、12路串口以及1路调试网口、USB接口；
IO接口板，与CPU板通过MII接口连接的IO接口板，提供16路开入(BI)、8路开出(BO)、8路模拟量采集(AI)和1路CAN总线；
COM板，与CPU板通过I2C及UART接口连接，COM板上配置多种通信模块，包括：4G无线模块、蓝牙模块、LORA模块、WIFI模块、RFID模块、GPS模块，以及摄像头接口；
本公共单元装置(下文提及的装置均为本发明的公共单元)可广泛接入各类传感设备，具备强大的处理能力与存储资源，可以为现有业务提供完整支撑，并满足未来业务的扩展需求。
公共单元装置具备丰富的功能接口及强大的网络处理能力，适用于配电物联网应用及边缘计算处理。装置作为汇聚(控制)节点，可通过多种接口接入区域内的物联网传感器，对传感器上传的信息进行汇聚和数据清洗，并将清洗后的数据上送至接入节点(边缘物联代理)，从而满足传感层和节点设备单点接入、链式分布多态组网需求。
公共单元装置具备4G/5G无线模块、蓝牙模块、LORA模块、WIFI模块、RFID模块、GPS模块以及摄像头接口等多种物联网通信接口，支持接入各类传感设备，适用于配电物联网应用及边缘计算处理。
装置可与所在配网区域的MQTT Broker(消息代理)建立连接，向Broker订阅本装置所需主题消息，消息来源为所有与Broker连接的物联网设备(包括区域内的其他配电终端、物联传感器等)。装置也可向Broker发布各类主题的信息，其他物联设备可通过向Broker订阅相关主题来获取信息。通过此种方式，区域内所有物联设备突破传统电网通信方式与网络架构限制，摆脱了传统模式下设备与主站点对点通信，无法互联互通的束缚，实现多点互联，海量数据共享。
装置通过物联协议订阅和获取指定区域内中压、低压设备节点的拓扑模块信息，整合形成该区域内的中压、低压实时拓扑模型，为其他广域自治功能提供参考依据，并能上传主站，供主站合成更大范围配网的拓扑模型。
装置通过与所在配网区域内各类物联传感器、配电终端进行泛在物联连接，订阅区域内各节点的拓扑信息、运行信息、故障事件信息等内容，进行线损分析、潮流分析等，并通过物联协议发布指令使相关开关或设备完成指定操作，对配网进行调整优化，实现广域自治。
装置通过与区域内其他配电终端进行泛在物联连接，并通过5G等方式进行信息高速交互，结合物联通信和拓扑识别分析功能，快速发现和定位区域内的故障，通过智能分布式FA对故障进行精准隔离和非故障区供电快速恢复。
实施例2：
传统配网自动化终端装置信息统一通过IEC101或IEC104协议上送主站，只能与主站进行点对点通信，装置间不具备互联互通功能，各项功能实现主要依赖主站分析控制，无法实现广域自治，在日常运行中需要消耗运维人员的时间与精力进行线路的运维管理。
作为广域自治的基础，本区域内的端设备(包括本公共单元装置、其他站所终端、馈线终端及物联网端设备等)应具备泛在物联互通功能，能够通过有线、无线等多种通信方式与区域MQTT Broker(消息代理)建立物理通信通道，并进行物联数据交互。
本公共单元装置可通过MQTT协议与区域内的Broker建立连接，并通过Broker获取到区域内所有端设备所发布的信息，从而实现了摆脱配电主站限制，在边侧获取区域内所有相关运行状态信息。在此基础上，通过一种边缘计算方法，在本装置上实现区域拓扑分析、线损分析、馈线自动化等广域自治功能。
基于融合物联网通信技术的站所终端公共单元实现的基于边缘计算的广域自治方法，具体步骤如下：
步骤1，公共单元装置(本例指定图2中1#公共单元为边缘计算装置)、区域内的其他各配电终端和各配电物联传感器均与Broker建立网络连接，连接成功后，所有设备可通过MQTT物联协议向Broker发布自身消息，以及向Broker订阅其他设备所发布的消息；
步骤2，公共单元装置向Broker订阅“拓扑”主题，随后，区域内所有拓扑模块向Broker发布的拓扑信息将被Broker推送给公共单元装置。拓扑模块安装于区域内线路各节点，包括配变、断路器、负荷开关等处，拓扑信息中包含本节点的地理位置、设备类型、节点编号、更新时间。
步骤3，公共单元装置已存有区域内配网拓扑模型文件，在收到的各节点拓扑信息后，对现有拓扑模型文件进行实时更新，包括：更新已有节点的信息；添加新增的运行节点；删除因为停电而不再发布拓扑信息的节点。本例更新后的模型文件中：断路器S1下游节点为开关K1；K1上游节点为S1，K1下游节点为K2；K2上游节点为K1，K2下游节点为K3，以此类推。
步骤4，公共单元装置将更新后的区域拓扑模型文件上传配电主站，主站在获取各区域拓扑模型的基础上，可生成整个配网的拓扑模型，为主站的配网运行情况分析、故障处理、网络结构优化提供依据。
步骤5，公共单元装置向Broker订阅“线损”主题，随后，区域内所有独立线损模块及包含线损功能的配电终端向Broker发布的线损信息将被Broker推送给公共单元装置。线损信息包括该节点的电流、电压、实时电量、冻结电量等数据。
步骤6，公共单元装置根据拓扑模型中的节点上下游关系，对各节点进行逐个的实时线损分析计算，当某节点电量与上下游电量计算差值超出阈值Qset，则认定为线损异常。本例中当K1、K2处电量数据(Q1，Q2)接近，但K2、K3处电量Q2-Q3>Qset时，可判定K2、K3之间为线损异常区域。
步骤7，公共单元装置将线损异常区域两端(K2、K3)的三相电流、功率进行比较分析，判定是否存在三相不平衡情况；将两端的三相电压、功率因数进行比较分析，判定是否存在需要无功补偿的情况。
步骤8，公共单元装置将线损异常情况及分析结果上报主站，同时向Broker发布相关电压、无功信息，区域内无功补偿装置应订阅该主题，在获取该信息后可进行无功补偿操作，以达到降低线损的目的。
实施例3：另一种，基于融合物联网通信技术的站所终端公共单元实现的基于边缘计算的广域自治方法：智能分布式馈线自动化FA方法
传统的配网终端之间分布式FA需敷设专用光纤，成本较高，配置复杂。本装置以物联网通信技术为基础，使用基于物联网的边缘计算方法，通过极低传输延时的5G无线通信方式，对区域配网内的各站所终端、馈线终端进行信息汇集分析和统一控制，及时定位区域中的故障点，并对故障区域进行隔离，恢复非故障区域供电，从而实现基于物联网边缘计算的智能分布式FA功能。参与智能分布式FA的各配电终端均应具备物联网通讯功能以及开关分合控制功能。
图3中，电源甲、乙之间开关3为分位，其它开关为合位，发生故障前线路处于正常运行状态。公共单元装置通过无线通信与区域内各节点的终端(如图3的DTU1、DTU2)建立物理通信通道。
本实施例步骤包括：
步骤1，公共单元装置、区域内的其他各配电终端、各配电物联传感器均与Broker建立网络连接，连接成功后，所有设备可通过MQTT物联协议向Broker发布自身消息，以及向Broker订阅其他设备所发布的消息。
步骤2，公共单元装置向Broker订阅“拓扑”主题，随后，区域内所有拓扑模块向Broker发布的拓扑信息将被Broker推送给本装置。拓扑模块安装于区域内线路各节点，包括配变、断路器、负荷开关等处，拓扑信息中包含本节点的地理位置、设备类型、节点编号、更新时间。
步骤3，公共单元装置已存有区域内配网拓扑模型文件，在收到的各节点拓扑信息后，对现有拓扑模型文件进行实时更新，包括：更新已有节点的信息；添加新增的运行节点；删除因为停电而不再发布拓扑信息的节点。本例更新后的模型文件中：①下游节点为②；②上游节点为①，②下游节点为③；③上游节点为②,以此类推。
步骤4，公共单元装置将更新后的区域拓扑模型文件上传配电主站，主站在获取各区域拓扑模型的基础上，可生成整个配网的拓扑模型，为主站的配网运行情况分析、故障处理、网络结构优化提供依据。
步骤5，公共单元装置向Broker订阅“运行状态数据”、“故障事件”主题，随后，区域内所有配电终端向Broker发布的运行状态数据和故障事件将被Broker推送给公共单元装置。
步骤6，当区域中线路某点(图3的①、②开关之间K处)出现故障，公共单元装置收到各相关终端通过物联协议发布的过流信号及电压电流等电气特征信息。
步骤7，公共单元装置根据所有节点发布的电流方向、开关位置、故障动作信息，按照从图3电源甲处到电源乙处的顺序对本区域馈线的拓扑模型逐节点分析，发现从电源甲到开关①之间终端均报出过流动作，电流方向一致；而开关②至电源乙之间所有终端未报过流动作，从而确定故障区域位于①、②之间。
步骤8，公共单元装置向Broker发布跳闸主题信息，信息内容为开关①、②跳闸故障。①、②两节点的配电终端收到消息后，开关跳开，完成故障区域的隔离。
步骤9，故障点前区域恢复供电。故障区域隔离后，公共单元装置按照拓扑模型中从电源甲到开关①的顺序，依次向Broker发布合闸主题信息，信息内容为对应节点开关合闸。该节点的配电终端收到消息后，开关合闸，最终恢复故障点前区域的供电。
步骤10，故障点后区域恢复供电。本装置依照拓扑模型，对开关②至电源乙之间各节点开关位置进行逐个判别，确认开关③处于分位，其他节点开关均处于合位。向Broker发布合闸主题信息，信息内容为开关③合闸。终端DTU2收到消息后，将开关③合闸，以恢复开关②、③之间正常区域的供电。
步骤11，故障处理完成后，本装置主动向主站云平台上送处理结果。
通过以上步骤，做到了对区域内的故障的准确定位、精准隔离和非故障区供电快速恢复。这种方法可以实现自主快速响应，有效减少停电时间，减轻调度、运维人员工作量，提高供电效率，达到了智能分布式FA的目的。
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。
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明技术原理的前提下，还可以做出若干改进和变形，这些改进和变形也应视为本发明的保护范围。

Claims (7)

1.一种站所终端公共单元，其特征在于：包括：
CPU板、IO接口板和COM板，IO接口板与CPU板通过MII接口连接，提供开入开出、模拟量采集功能和CAN总线；COM板与CPU板通过I2C及UART接口连接，COM板上配置若干种通信模块。
2.根据权利要求1所述的一种物联网的标准化站所终端公共单元，其特征是：通信模块包括以下一种或多种组合：4G无线模块、蓝牙模块、LORA模块、WIFI模块、RFID模块、GPS模块、摄像头接口。
3.基于权利要求1～2任一一项所述的站所终端公共单元的基于边缘计算的广域自治方法，其特征是：包括步骤：
公共单元、各配电终端和各配电物联传感器均与Broker建立网络连接，连接成功后，所有设备通过MQTT物联协议向Broker发布自身消息，以及向Broker订阅其他设备所发布的消息；
公共单元向Broker订阅“拓扑”主题，区域内所有拓扑模块向Broker发布的拓扑信息被Broker推送给公共单元；
公共单元在收到的各节点拓扑信息后，对现有区域拓扑模型文件进行更新；
公共单元将更新后的区域拓扑模型文件上传配电主站，主站在获取各区域拓扑模型的基础上，生成整个配网的拓扑模型；
公共单元通过向Broker订阅设定的主题实现区域自治功能。
4.根据权利要求3所述的一种基于边缘计算的广域自治方法，其特征是：拓扑模块安装于区域内线路各节点处，拓扑信息包括节点的地理位置、设备类型、节点编号和更新时间。
5.根据权利要求3所述的一种基于边缘计算的广域自治方法，其特征是：区域自治功能包括线损分析，线损分析方法包括步骤：
公共单元向Broker订阅线损主题，区域内所有独立线损模块及包含线损功能的配电终端向Broker发布的线损信息被Broker推送给公共单元；
公共单元根据拓扑模型中的节点上下游关系，对各节点进行逐个的线损分析计算，当某节点电量与上下游电量计算差值超出设定阈值，则认定为线损异常；
公共单元分析判定是否存在三相不平衡情况和需要无功补偿的情况，将线损异常情况及分析结果上报主站，同时向Broker发布相关电压和无功信息。
6.根据权利要求3所述的一种基于边缘计算的广域自治方法，其特征是：区域自治功能包括馈线自动化分析，馈线自动化分析方法包括步骤：
公共单元装置向Broker订阅“运行状态数据”、“故障事件”主题，区域内所有配电终端向Broker发布的运行状态数据和故障事件被Broker推送给公共单元装置；
当区域中线路某点出现故障，公共单元收到各相关终端通过物联协议发布的电气特征信息；
公共单元根据所有节点发布的电流方向、开关位置和故障动作信息，按照节点顺序对区域馈线的拓扑模型逐节点分析，确定故障区域；
公共单元装置向Broker发布跳闸主题信息，完成故障区域的隔离；
故障区域隔离后，公共单元按照拓扑模型中节点顺序依次向Broker发布合闸主题信息，恢复故障点前后区域的供电。
7.根据权利要求6所述的一种基于边缘计算的广域自治方法，其特征是：故障处理完成后，公共单元主动向主站云平台上送处理结果。
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