CN105449865B - 一种用于配电网络故障定位隔离的智能馈线终端ftu - Google Patents

一种用于配电网络故障定位隔离的智能馈线终端ftu Download PDF

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CN105449865B
CN105449865B CN201510952374.8A CN201510952374A CN105449865B CN 105449865 B CN105449865 B CN 105449865B CN 201510952374 A CN201510952374 A CN 201510952374A CN 105449865 B CN105449865 B CN 105449865B
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switch
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CN105449865A (zh
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张杭
陈军
王劲
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NANJING INTELLIGENT APPARATUS 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
    • H02J13/00006—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
    • H02J13/00009—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 using pulsed signals
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/22—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices
    • H02J13/0062—
    • 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
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/40—Display of information, e.g. of data or controls
    • 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

Abstract

本发明公开了一种用于配电网络故障定位隔离的智能馈线终端FTU，包括电源管理模块、主控板、显示模块和GPRS通信模块，电源管理模块、显示模块、GPRS通信模块均与主控板相连。该智能馈线终端集线路保护、测量、控制、监测、通信、远动等多种功能于一体，广泛应用于10kV配电系统辐射状电网中，它对架空线路上的柱上开关、分段开关、联络开关等一次设备进行控制操作，并能在现场开关所监测故障信息不传至通信系统与主站系统的情况下，实现网络重构、故障自动判定隔离和快速恢复非故障区域供电。

Description

一种用于配电网络故障定位隔离的智能馈线终端FTU
技术领域
本发明涉及一种配电管理设备，具体涉及一种用于配电网络故障定位隔离的智能馈线终端FTU。
背景技术
10kV架空配电线路T接的用户内部发生故障时，如故障在其进线段，或故障虽发生在用户进线开关内侧但其保护动作时限与变电站出线开关保护配合不当时，均会造成变电站出线开关保护跳闸。如果故障性质是永久的，变电站重合不成功，则一个中压用户界内的事故将使整条配电线路停电，这种在配电网中常见的波及事故，对社会将造成恶劣影响。目前大多数馈线终端虽能够切断故障线路开关，但不能对故障进行准确定位，只能依靠远方监控平台来实现。当馈线终端和远方监控平台失去通信连接后，就无法快速实现故障隔离、恢复供电。
发明内容
针对现有技术中存在的问题，本发明提供了一种集线路保护、测量、控制、监测、通信、远动等多种功能于一体的智能馈线终端FTU(Feeder Terminal Unit，馈线自动化测控终端)，该设备安装于10kV配电系统辐射状电网中，它对架空线路上的柱上开关、分段开关、联络开关等一次设备进行控制操作，并能实现配电网络故障定位、故障隔离和自动快速恢复非故障区域供电。
该终端不仅可以实现传统配网自动化终端的监测、保护、控制功能，而且当其与配电监控主站系统失去通信连接时，也能实现配电网络故障定位、故障隔离和自动快速恢复非故障区域供电。
本发明解决其技术问题所采用的技术方案是：
一种智能馈线终端FTU装置，包括电源管理模块、主控板、显示模块和GPRS通信板。其特征在于：
所述电源管理模块包含电压互感器和电流互感器，并通过电压互感器取电。该电源管理模块不仅能够对主控板提供电源，还能够对外部连接的蓄电池进行充放电管理，并对柱上开关提供储能电源和分合闸控制电源。
所述主控板包括处理器、存储模块、A/D转换模块、开入量采集模块、开出量控制模块、以太网通信模块。
所述数据存储模块通过数据总线和处理器相连。
所述A/D转换模块采集电源管理模块上电压互感器和电流互感器二次模拟量数据，转换成数字信号传送给处理器。
所述开入量采集模块采集柱上开关位置信号和储能状态信号，通过光耦隔离把信号传送给处理器。
所述开出量控制模块和处理器相连，由处理器发出动作指令对柱上开关进行分合闸操作。
所述以太网通信模块和处理器相连，通过以太网的通信接口以有线传输同主站系统建立通信连接。
所述GPRS通信模块和主控板上处理器通过通信连接线相连，通过无线传输同主站建立通信连接。
所述显示模块和主控板上处理器通过人机接口总线相连，用于显示装置状态，并对装置进行数据查询和定值参数整定操作。
上述的智能馈线终端，其更进一步特征在于：终端配置有失压来压重合保护功能和过流来压重合保护功能。当线路发生故障时，终端故障动作出口，同时记录故障状态于存储器中，该状态掉电不丢失。当终端重合柱上开关后，终端根据之前的故障状态和当前的电气运行状况判断是否为本地故障。如果是本地故障，终端加速跳闸，隔离故障；如果不是本地故障，终端暂时闭锁跳闸出口，避免下级线路开关重合时导致此级开关越级跳闸，方便快速恢复供电。
一种现场开关监测的故障信息不传至通信系统与主站系统，从而实现网络重构、自动故障判定隔离的方法。该方法主要利用智能馈线终端结合断路器所形成具有重合功能的柱上开关，通过重合闸保护是否再次出现电流故障，从而实现故障定位、故障隔离。其步骤包括：
步骤一：当配电网络出现过流故障时，故障电流超过电流定值的智能馈线终端跳闸出口，跳开开关；
步骤二：当配电网络上级线路开关跳闸，导致下级线路产生失压故障时，下级线路馈线终端跳闸出口，跳开开关；
步骤三：所述开关跳开开关后开始并始终检测上级配电网络是否有电压，如果上级线路有电压，所述智能馈线终端启动重合保护功能，重合开关；
步骤四：重合开关后，若所述智能馈线终端未检测到故障电流，则所述智能馈线终端对开关进行短时闭锁跳闸操作，防止下级线路重合于故障后，该线路越级跳闸；该线路恢复供电后，下级线路检测到线路有电压时，下级线路继续重合开关；
若所述智能馈线终端在开关重合瞬间再次检测到故障电流，终端启动加速跳闸保护，跳开故障处开关，实现故障定位和隔离。
本发明具有以下有益效果：该智能馈线终端人机界面友好，提供全中文显示界面和简捷的可视化操作；适应性强，具有多种保护功能，和安装于架空线路上的柱上开关配套使用。多元化功能的高度集成及标准化的产品结构形式，集保护、测量、控制、监测、通信、事件记录等多种功能于一体。不仅可以对开关进行本地保护、控制操作，还能利用有线或无线网络，把线路电气量数据上传给主站监控层，以便实现远程监控、故障定位、故障隔离和恢复供电。即使该智能馈线终端未和主站系统建立通信连接，其利用自身的故障判断和闭锁功能，能快速切除故障线路，恢复非故障区域供电。
附图说明
图1为本发明实施例的装置整体结构框图。
图2为本发明实施例的主控板结构框图。
图3为本发明实施例的电源板结构框图。
具体实施方式
以下结合附图通过具体实施例对本发明的技术方案做进一步的说明。
如图1所示，本实施例的智能馈线终端由电源管理板(模块)、主控板、人机显示板(显示模块)和GPRS通信板(模块)组成。电源管理板(模块)是由互感器(模块)和电源模块组成，互感器与外部模拟量输入端子相连，电源模块与外部蓄电池相连；主控板上集成外部开入量输入端子、继电器输出端子、以太网通信端子；显示模块包括开入按键、指示灯和LED显示屏(显示屏)。
主控板结构如图2所示，包括处理器、存储模块、开入量采集模块、开出量控制模块、A/D转换器(模块)、以太网通信模块；外部模拟量输入端子通过所述A/D转换器与处理器连接。
图3为本发明实施例的电源板结构框图。互感器包括电流互感器、电压互感器。电源模块通过电压互感器取电，给主控板输出DC5V电源，并能够对外部蓄电池进行充放电管理，并对柱上开关提供储能电源和分合闸控制电源。
配电网络中一次设备电压、电流互感器转换后的电压和电流信号经馈线终端内部电压互感器、电流互感器变换成弱电信号，经多路转换开关、运算放大器、A/D转换器转换为数字量，再通过处理器进行处理、运算得到相应的电压电流值；同时处理器接受经光电隔离的脉冲信号和开关量输入信号(如断路器状态)、外部开入按钮信号；所有信号经运算处理后，处理器发出相应的分合闸信号和告警信号到驱动接口电路，驱动接口电路将这些信号送到各继电器，分合闸继电器触点接通接触器的分合闸回路。各种信号的测量值、保护动作值、定值整定都通过LCD显示屏显示。
通过以太网通信接口(端子)或者GPRS通信板进行远方通信，实现遥测、遥信、遥控、遥调功能，并可实现定值的远方整定及查询、远方保护投退等功能。
电源模块不仅可以对主控板提供电源，还能够对外部蓄电池进行充放电管理，当线路失压时，装置可由外部蓄电池进行供电。
一种现场开关监测的故障信息不传至通信系统与主站系统，从而实现网络重构、自动故障判定隔离的方法。该方法主要利用智能馈线终端结合断路器所形成具有重合功能的柱上开关，通过重合闸保护是否再次出现电流故障，从而实现故障定位、故障隔离。其步骤为：
步骤一：当配电网络出现过流故障时，故障电流超过电流定值的智能馈线终端跳闸出口，跳开开关。
步骤二：当配电网络上级线路开关跳闸，导致下级线路产生失压故障时，下级线路馈线终端跳闸出口，跳开开关。
步骤三：开关跳开开关后开始并始终检测上级配电网络是否有电压，如果上级线路有电压，智能馈线终端启动重合保护功能，重合开关。
步骤四：重合开关后，若智能馈线终端未检测到故障电流，则智能馈线终端对开关进行短时闭锁跳闸操作，防止下级线路重合于故障后，该线路越级跳闸；该线路恢复供电后，下级线路检测到线路有电压时，下级线路继续重合开关；
若智能馈线终端在开关重合瞬间再次检测到故障电流，终端启动加速跳闸保护，跳开故障处开关，实现故障定位和隔离。
以上实施例仅为说明本发明的技术思想，不能以此限定本发明的保护范围，凡是按照本发明提出的技术思想，在技术方案基础上所做的任何改动，均落入本发明保护范围之内；本发明未涉及的技术均可通过现有技术加以实现。

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1.一种配电网络故障定位隔离的方法，其特征在于：用于配电网络故障定位隔离的智能馈线终端FTU包括电源管理模块、主控板、显示模块和GPRS通信模块，所述电源管理模块、所述显示模块、所述GPRS通信模块与所述主控板相连；
所述主控板包括处理器、存储模块、开入量采集模块、开出量控制模块、A/D转换模块、以太网通信模块；所述电源管理模块是由互感器模块和电源模块组成，所述互感器模块包括电流互感器、电压互感器；所述显示模块包括开入按键、指示灯和显示屏；
所述电源管理模块通过电压互感器取电，提供给所述主控板电源并能够对外部蓄电池进行充放电管理，并对柱上开关提供储能电源和分合闸控制电源；
当配电网络失压时，装置可由外部蓄电池供电；
配置失压来压重合保护功能和过流来压重合保护功能；
包括以下步骤：
步骤一：当配电网络出现过流故障时，故障电流超过电流定值的智能馈线终端跳闸出口，跳开开关；
步骤二：当配电网络上级线路开关跳闸，导致本级线路产生失压故障时，馈线终端跳闸出口，跳开开关；
步骤三：所述开关跳开开关后开始并始终检测上级配电网络是否有电压，如果上级线路有电压，智能馈线终端启动重合保护功能，重合开关；
步骤四：重合开关后，若所述智能馈线终端未检测到故障电流，则所述智能馈线终端对开关进行短时闭锁跳闸操作，防止下级线路重合于故障后，该线路越级跳闸；该线路恢复供电后，下级线路检测到线路有电压时，下级线路继续重合开关；
若所述智能馈线终端在开关重合瞬间再次检测到故障电流，终端启动加速跳闸保护，跳开故障处开关，实现故障定位和隔离。
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