CN113206544B - 一种基于变压器高压进出线的电网gic监测装置 - Google Patents

一种基于变压器高压进出线的电网gic监测装置 Download PDF

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CN113206544B
CN113206544B CN202110289376.9A CN202110289376A CN113206544B CN 113206544 B CN113206544 B CN 113206544B CN 202110289376 A CN202110289376 A CN 202110289376A CN 113206544 B CN113206544 B CN 113206544B
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signal processing
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CN113206544A (zh
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石海鹏
高春辉
张倩然
郝建红
燕思潼
姜楠
王秀丰
高贺
王鹏
戴晨
刘连光
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State Grid Corp of China SGCC
North China Electric Power University
Electric Power Research Institute of State Grid Eastern Inner Mongolia Power Co Ltd
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North China Electric Power University
Electric Power Research Institute of State Grid Eastern Inner Mongolia Power 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
    • H02J13/00001—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 display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
    • 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
    • H02J13/00002—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 monitoring
    • 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
    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
    • 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
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/70—Smart grids as climate change mitigation technology in the energy generation 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
    • Y04S10/12—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
    • 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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Abstract

本发明涉及一种基于变压器高压进出线的电网GIC监测装置，电网GIC监测装置安装在变压器高压进出线的导线上，包括供电电源、电流传感器、DC‑DC转换器、信号处理系统、网关系统、云服务器和显示模块；供电电源与电流传感器连接，供电电源通过DC‑DC转换器与信号处理系统，电流传感器与信号处理系统连接，信号处理系统与网关系统连接，网关系统通过无线与云服务器进行通讯，云服务器与显示模块连接。本发明所述的基于变压器高压进出线的GIC监测装置安装在变压器高压进出线的导线上，GIC监测装置与变压器高压进出线的导线等电位，GIC监测装置不承受高压，解决了GIC监测装置耐受电压低的问题，可对电网GIC长期在线监测。

Description

一种基于变压器高压进出线的电网GIC监测装置
技术领域
本发明涉及电力信息监测与量测领域，具体涉及一种基于变压器高压进出线的电网GIC监测装置。
背景技术
随着电网的规模越来越大，我国发现的地磁暴的地磁感应电流(GIC)侵害电网的事件也越来越多，迫切需要通过监测GIC掌握地磁暴对电网安全的影响及危害。目前，我国安装GIC在线监测装置的电网不多，主要原因是，由于GIC监测装置属于低压监测设备，低压监测设备长期串接在变压器中性点回路中，不符合接入变压器中性点设备绝缘水平相关标准的要求。因此，本发明提出了一种基于变压器高压进出线的电网GIC监测装置，安装在变压器高压进出线的导线上的GIC监测装置与变压器进出线的导线处于等电位，以解决低压监测设备安装在变压器中性点的绝缘水平不能满足相关标准要求的问题，以实现对电网GIC的长期在线监测。
发明内容
针对现有技术中存在的缺陷，本发明的目的在于提供一种基于变压器高压进出线的电网GIC监测装置，GIC监测装置是由电子芯片、铁磁材料器件、常规电阻、电容等元器件组合设计而成，属于低压监测装置，而我国发电厂和变电站的110kV及以上中性点接地的变压器，对接入变压器中性点设备的绝缘水平的要求至少在35kV以上(GB 1094)；因此，将低压的GIC监测装置长期接在变压器的中性点，不符合国家标准对中性点接入设备绝缘水平的要求。因此，本发明将GIC监测装置整体安装在变压器高压进出线的导线上，GIC监测装置与变压器高压进出线的导线等电位，GIC监测装置不承受高压，可解决GIC监测装置耐受电压低的问题，实现对电网GIC长期在线监测。
为达到以上目的，本发明采取的技术方案是：
一种基于变压器高压进出线的电网GIC监测装置，所述电网GIC监测装置安装在变压器高压进出线的导线上，所述装置包括：供电电源、电流传感器、DC-DC转换器、信号处理系统、网关系统、云服务器和显示模块；
所述供电电源与电流传感器连接，所述供电电源通过DC-DC转换器与信号处理系统，电流传感器与信号处理系统连接，信号处理系统与网关系统连接，网关系统通过无线与云服务器进行通讯，云服务器与显示模块连接；
所述供电电源包括太阳能板和蓄电池，当处于夜晚或阴天时，所述电网GIC监测装置采用蓄电池供电，当有阳光时，太阳能板一方面给电网GIC监测装置供电，另一方面给蓄电池充电，
所述供电电源用于输出15V电压给电流传感器供电；
所述DC-DC转换器用于将供电电源输出的15V电压转换为5V电压给信号处理系统供电；
所述电流传感器用于采集0.01-0.0001Hz的GIC信号，并将GIC信号发送给信号处理系统；
所述信号处理系统用于接收GIC信号并对GIC信号进行处理，并将处理后的数据通过网关系统发送给云服务器；
所述云服务器用于接收信号处理系统发送的数据并对接收的数据进行存储，同时将接收的数据发送给显示模块；
所述显示模块用于给电网调度或运维人员实时显示数据，实现对电网GIC的实时监测。
在上述方案的基础上，所述显示模块包括PC端和手机端。
在上述方案的基础上，所述电流传感器采用霍尔电流传感器。
与安装在变压器中性点的GIC监测装置相比，本发明提出的基于变压器高压进出线的电网GIC监测装置，在实现技术上的主要区别如下：
1)等电位监测。低压GIC监测装置的信号采集传感器长期接在变压器的中性点，不符合国家标准对中性点接入设备绝缘水平的要求，是制约GIC监测装置不能长期在线应用的主要问题。本发明的监测装置整体安装在变压器高压进出线的导线上，监测装置与变压器高压进出线的导线等电位，监测装置的安装与使用，不受国家标准对中性点接入设备绝缘水平要求的约束。
2)太阳能供电。安装在变压器中性点的GIC监测装置，需要从装置安装现场取220V电源为监测装置供电，当变压器中性点出现操作、大气等过电压时，存在过电压通过220V电源线损毁装置，或通过采集传感器二次电缆线引发其它事故的风险。本发明所述的监测装置采用太阳能供电，不会发生上述的问题。
3)多平台显示数据。安装在变压器中性点的GIC监测装置，采集的GIC数据需要通过GPRS通讯系统或有线电缆传送至后台系统进行处理，平台单一。本发明所述的监测装置采用多平台显示数据，可将采集的GIC信号通过信号处理系统传输至云服务器，用户终端服务器或用户手机APP客户端可从云服务器获取数据，实现实时监测、历史数据的查看及越限的报警。
基于变压器高压进出线的电网GIC监测装置，可消除安装、使用上的要求耐受高电压和存在的过电压风险，方便使用和扩大应用的范围。
本发明的有益效果：
基于变压器中性点的GIC监测装置及系统已有很多应用，由于相关标准要求接入中性点设备的绝缘水平要求高，限制了GIC监测装置长期在线应用。本发明所述的基于变压器高压进出线的GIC监测装置安装在变压器高压进出线的导线上，GIC监测装置与变压器高压进出线的导线等电位，GIC监测装置不承受高压，解决了GIC监测装置耐受电压低的问题，可对电网GIC长期在线监测。
附图说明
本发明有如下附图：
图1基于变压器高压进出线的电网GIC监测装置的原理图。
图2本发明所述的基于变压器高压进出线的电网GIC监测装置示意图。
具体实施方式
以下结合附图1-2对本发明作进一步详细说明。
一种基于变压器高压进出线的电网GIC监测装置，所述电网GIC监测装置安装在变压器高压进出线的导线上，所述装置包括：供电电源、电流传感器、DC-DC转换器、信号处理系统、网关系统、云服务器和显示模块；
所述供电电源与电流传感器连接，所述供电电源通过DC-DC转换器与信号处理系统，电流传感器与信号处理系统连接，信号处理系统与网关系统连接，网关系统通过无线与云服务器进行通讯，云服务器与显示模块连接；
所述供电电源包括太阳能板和蓄电池，当处于夜晚或阴天时，所述电网GIC监测装置采用蓄电池供电，当有阳光时，太阳能板一方面给电网GIC监测装置供电，另一方面给蓄电池充电，
所述供电电源用于输出15V电压给电流传感器供电；
所述DC-DC转换器用于将供电电源输出的15V电压转换为5V电压给信号处理系统供电；
所述电流传感器用于采集0.01-0.0001Hz的GIC信号，并将GIC信号发送给信号处理系统；
所述信号处理系统用于接收GIC信号并对GIC信号进行处理，并将处理后的数据通过网关系统发送给云服务器；
所述云服务器用于接收信号处理系统发送的数据并对接收的数据进行存储，同时将接收的数据发送给显示模块；
所述显示模块用于给电网调度或运维人员实时显示数据，实现对电网GIC的实时监测。
在上述方案的基础上，所述显示模块包括PC端和手机端。
在上述方案的基础上，所述电流传感器采用霍尔电流传感器。
本发明以通过变压器高压进出线的导线监测电网GIC为目标，提出了一种基于变压器高压进出线的电网GIC监测装置。本发明所述监测装置的主要技术特征如下：
1)等电位监测
本发明所述电网GIC监测装置的原理图如图1所示。监测装置由太阳能板、DC-DC转换器、蓄电池、电流传感器和信号传输系统组成。其中，采用霍尔电流传感器采集0.01-0.0001Hz的地磁暴GIC的方法和过程，与通过变压器中性点采集GIC的方法和过程没有本质上的区别。
本发明所述监测装置与变压器中性点GIC监测装置区别之一是：霍尔电流传感器与监测装置形成一体，安装在变压器高压进出线的超高压导线上，监测装置与超高压导线电压等电位，对装置没有耐受超高压绝缘水平的要求。由于监测装置安装在超高压导线上，装置信息采集、处理与传输采用太阳能供电。
2)太阳能供电
本发明所述监测装置与变压器中性点GIC监测装置区别之二是：本发明所述的电网GIC监测装置采用太阳能供电。因为在超高压导线上监测GIC或导线温度、微风振动等信息，无法或很难采用类似于变压器中性点监测装置的220V市电技术供电，超高压导线上的监测装置的供电技术是本发明要解决的关键技术。
与导线温度、微风振动等监测相比，由于地磁暴的持续时间可能长达几天，监测GIC的时间更长，需要传输的数据量更大，采用导线温度等监测所用的CT供电技术，其供电能力不能满足GIC监测的需要，因此采用太阳能技术供电。太阳能供电技术在输电线路导线舞动和覆冰监测等方面已有应用，技术成熟、供电可靠，满足本发明GIC监测的需要。
3)多平台显示数据
本发明所述监测装置与变压器中性点GIC监测装置区别之三是：监测装置采集的GIC数据可通过多平台显示并给出地磁暴事故风险告警。我国大截面导线电网的规模越来越大，这些电网导线的单位直流电阻小，地磁暴在电网产生的GIC越来越大，为了能及时将监测到的地磁暴事故风险，及时发送给电网调度或运维人员，本发明通过技术成熟的PC机和手机客户端显示数据，如附图2所示。图1电网GIC监测装置的信号传输系统与附图2中的云服务器通过成熟的无线传输系统传输和交换数据，实现对电网地磁暴GIC实时在线监测。
本发明所述的基于变压器高压进出线的电网GIC监测装置，消除了安装和使用上的要求耐受高电压和存在的过电压风险，方便使用和扩大应用的范围。
本说明书中未作详细描述的内容属于本领域专业技术人员公知的现有技术。

Claims (3)

1.一种基于变压器高压进出线的电网GIC监测装置，其特征在于，所述电网GIC监测装置安装在变压器高压进出线的导线上，所述装置包括：供电电源、电流传感器、DC-DC转换器、信号处理系统、网关系统、云服务器和显示模块；
所述供电电源与电流传感器连接，所述供电电源通过DC-DC转换器与信号处理系统连接，电流传感器与信号处理系统连接，信号处理系统与网关系统连接，网关系统通过无线传输与云服务器进行通讯，云服务器与显示模块连接；
所述供电电源包括太阳能板和蓄电池，当处于夜晚或阴天时，所述电网GIC监测装置采用蓄电池供电，当有阳光时，太阳能板一方面给电网GIC监测装置供电，另一方面给蓄电池充电，
所述供电电源用于输出15V电压给电流传感器供电；
所述DC-DC转换器用于将供电电源输出的15V电压转换为5V电压给信号处理系统供电；
所述电流传感器用于采集0.01Hz-0.0001Hz的GIC信号，并将GIC信号发送给信号处理系统；
所述信号处理系统用于接收GIC信号并对GIC信号进行处理，并将处理后的数据通过网关系统发送给云服务器；
所述云服务器用于接收信号处理系统发送的数据并对接收的数据进行存储，同时将接收的数据发送给显示模块；
所述显示模块用于给电网调度或运维人员实时显示数据，实现对电网GIC的实时监测。
2.如权利要求1所述的基于变压器高压进出线的电网GIC监测装置，其特征在于，所述显示模块包括PC端和手机端。
3.如权利要求1所述的基于变压器高压进出线的电网GIC监测装置，其特征在于，所述电流传感器采用霍尔电流传感器。
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