CN108020756A - 一种电缆监控装置 - Google Patents
一种电缆监控装置 Download PDFInfo
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- CN108020756A CN108020756A CN201711320820.9A CN201711320820A CN108020756A CN 108020756 A CN108020756 A CN 108020756A CN 201711320820 A CN201711320820 A CN 201711320820A CN 108020756 A CN108020756 A CN 108020756A
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- 238000005259 measurement Methods 0.000 claims description 11
- 230000000875 corresponding Effects 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 7
- 230000001960 triggered Effects 0.000 claims description 7
- 239000007789 gas Substances 0.000 claims description 5
- CBENFWSGALASAD-UHFFFAOYSA-N ozone Chemical compound 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- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound 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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicium dioxide Chemical compound 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O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/083—Locating faults in cables, transmission lines, or networks according to type of conductors in cables, e.g. underground
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1218—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing using optical methods; using charged particle, e.g. electron, beams or X-rays
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/1272—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
Abstract
本发明涉及电缆监控领域，具体涉及一种电缆监控装置。所述接口包括获取电缆或电缆接头运行状态信息的运行状态信息采集接口，以及获取外部环境传感信息的感应信号采集接口，所述电路板结构包括处理器模组和LPWAN传输模组，所述处理器模组分别与运行状态信息采集接口、感应信号采集接口和LPWAN传输模组连接。本发明通过在电缆或电缆中间接头处设置一电缆监控装置，获取运行状态信息以及环境感应信息，并通过LPWAN传输模组上报，实现电缆或电缆中间接头的运行状态的在线检测，并为配电网运行及设备状态维护提供决策；进一步地，还解决了地下电力电缆难以维护的难题，可有效解决电力系统运行中存在的实际问题,提高供电可靠性。
Description
一种电缆监控装置
技术领域
[0001] 本发明涉及电缆监控领域，具体涉及一种电缆监控装置。
背景技术
[0002] 随着经济的快速发展，高压电力供电线路的入地化成为趋势。然而，大多数电力电 缆沟道狭小封闭，难以清理维护；易发生积水，导致淤泥聚集、垃圾成堆。长期的污秽聚集、 电缆浸泡会产生诸如甲烷、氨气、氢气等易燃易爆气体;导致电缆老化加快，甚至威胁运维 人员的安全。
[0003] 根据不完全统计，由于电缆中间接头过热而引起的电缆火灾占电缆火灾总数的半 数以上，所以及时了解电缆中间接头的运行情况，关系到供电电网的安全。对电缆中间接头 的温升进行理论分析和实际运行情况总结，这两者都表明：在电缆中间接头处发生的故障 都不是突发的事故，往往是因为接头的各种故障产生了大量的热，导致电缆中间接头的温 度不断升高，从而不断地增大泄露电流和加剧接头绝缘材料的高温老化，最终导致接头的 热击穿甚至电缆火灾，由此可见电缆中间接头的温度是反映其运行状态的重要参数。因此， 不受外界环境干扰和不受强电磁场影响的电缆中间接头温度实时在线监测就显得非常重 要，能够及时发现存在的安全隐患。
[0004] 目前，对地下电缆运行状态的在线监测大致有三种方法:一是安装移动视频监控 系统，只适应于大型隧道，需要专项施工;而且只能通过红外摄像机测量温度。二是采用分 布式光纤测温，需要布设光纤，施工难度大;且光纤易损坏，且只能测温。三是基于GPRS的采 集终端，但通信质量差，功耗大，无法自供电，难以长期运行。上述各种方法，由于存在致命 缺点，难以大范围推广。
[0005] 如何实现高效稳定、安全、便捷、低成本地监控电缆中间接头，是本领域技术人员 一直重点研宄的问题之一。
发明内容
[0006]本发明要解决的技术问题在于，针对现有技术的上述缺陷，提供一种电缆监控装 置，实现高效稳定、安全、便捷、低成本地监控电缆中间接头。
[0007]本发明解决其技术问题所采用的技术方案是:提供一种电缆监控装置，所述电缆 监控装置包括壳体、设置在壳体上的多个接口和设置在壳体内的电路板结构，所述电路板 结构分别与所述多个接口连接;其中，
[0008]所述接口包括获取电缆或电缆接头运行状态信息的运行状态信息采集接口，以及 获取外部环境传感信息的感应信号采集接口，所述电路板结构包括处理器模组和LPWAN传 输模组，所述处理器模组分别与运行状态信息采集接口、感应信号采集接口和LPWAN传输模 组连接；
[0009]以及，所述处理器模组通过LPWAN传输模组将采集到的数据信息发送至外部的网 关路由器，并通过网关路由器发送至云端;并且，所述处理器模组将采集到的数据信息进行 本地存储。
[0010] 其中，较佳方案是:所述处理器模组包括一分析判断模块，所述分析判断模预设多 个数据阈值，并将采集到的各数据信息分别与对应的数据阈值进行对比分析，判断是否存 在故障；以及，若有故障，所述处理器模组通过LPWAN传输模组上传故障信息。
[0011] 其中，较佳方案是:所述处理器模组包括一定时触发模块，所述定时触发模块定时 触发唤醒处理器模组；以及，所述处理器模组还包括一事件触发模块，所述事件触发模块预 设多种事件，并在事件发生时触发唤醒处理器模组;其中，所述处理器模组在被触发唤醒前 处于休眠状态，并在被触发唤醒后通过接口采集对应的数据信息。
[0012] 其中，较佳方案是:所述接口还包括一外部触发接口。
[0013] 其中，较佳方案是:所述电缆监控装置还包括LPWAN天线，所述接口还包括LPWAN天 线接口，所述LPWAN传输模组通过LPWAN天线接口与LPWAN天线连接。
[0014]其中，较佳方案是:所述运行状态信息采集接口与设置在电缆或电缆接头上的温 度传感器连接，获取电缆或电缆接头的温度信息；
[0015] 或者，所述运行状态信息采集接口与设置在电缆或电缆接头上的电流传感器连 接，获取电缆或电缆接头的电流信息。
[0016] 其中，较佳方案是:所述电缆监控装置还包括获取外部环境传感信息的环境传感 器单元，所述环境传感器单元与感应信号采集接口连接;其中，所述传感器单元包括湿度传 感器、烟雾传感器、氧气传感器、可燃气体传感器、空气质量传感器、红外接近传感器中的一 种或多种。
[0017] 其中，较佳方案是:所述运行状态信息采集接口与设置在电缆或电缆接头上的局 部放电测量单元连接，所述局部放电测量单元获取电缆或电缆接头的局部放电信息;其中， 所述处理器模组采集局部放电信息，并判断是否存在故障，若有故障通过LPWAN传输模组上 传故障信息;其中，所述局部放电测量单元包括紫外检测模块、臭氧检测模块和HFCT模块。
[0018] 其中，较佳方案是:所述电缆监控装置还包括GPS模组，所述GPS模组提供位置信 息。
[0019] 其中，较佳方案是:所述接口还包括微能信号采集接口，所述微能信号采集接口与 外部的微能采集单元相连;所述微能采集单元通过收集周围的电磁场能量或热能，转化为 电能，并通过微能信号采集接口供电至电缆监控装置。
[0020] 本发明的有益效果在于，与现有技术相比，本发明通过在电缆或电缆中间接头处 设置一电缆监控装置，获取运行状态信息以及环境感应信息，并通过LPWAN传输模组上报， 实现电缆或电缆中间接头的运行状态的在线检测，并为配电网运行及设备状态维护提供决 策;进一步地，还解决了地下电力电缆难以维护的难题，可有效解决电力系统运行中存在的 实际问题，提尚供电可罪性。
附图说明
[0021] 下面将结合附图及实施例对本发明作进一步说明，附图中：
[0022] 图1是本发明电缆监控装置的结构框图；
[0023] 图2是本发明电缆监控装置的结构示意图；
[0024] 图3是本发明分析判断模块的结构框图；
[0025]图4是本发明触发模块的结构框图；
[0026]图5是本发明局部放电测量单元的结构框图。
具体实施方式
[0027]现结合附图，对本发明的较佳实施例作详细说明。
[0028]如图1和图2所示，本发明提供一种电缆监控装置的优选实施例。其中，图1是本发 明电缆监控装置的结构框图；图2是本发明电缆监控装置的结构示意图。
[0029] —种电缆监控装置110,所述电缆监控装置110包括壳体116、设置在壳体116上的 多个接口 113和设置在壳体116内的电路板结构(附图未显示），所述电路板结构分别与所述 多个接口 113连接。
[0030]具体地，所述接口 113包括获取电缆121或电缆接头122运行状态信息的运行状态 信息采集接口 II32,以及获取外部环境传感信息的感应信号采集接口 1137,所述电路板结 构包括处理器模组111和LPWAN传输模组112,所述处理器模组111分别与运行状态信息采集 接口 1132、感应信号采集接口 1137和LPWAN传输模组112连接。以及，所述处理器模组111通 过LPWAN传输模组II2将采集到的数据信息发送至外部的网关路由器13〇,并通过网关路由 器130发送至云端140;并且，所述处理器模组m将采集到的数据信息进行本地存储。
[0031] 在本实施例中，处理器模组111包括处理器电路、采集电路及通信电路，所述采集 电路分别与电量信号采集接口 113和感应信号采集接口 1137连接，并将采集到的数据信息 发送至处理器电路中；所述处理器电路对数据信息进行整理、分析、处理，之后通过通信电 路将处理后的数据信息发送至LPWAN传输模组112中，以及通过通信电路将处理后的数据信 息存储至本地存储模块中。
[0032] 优选地，采集电路为A/D转换电路，将电缆121或电缆接头122的电量信号转化为数 字信号，并发送至处理器电路中；以及，采集电路还可以为数据传输电路，接收传感器单元 115传输的感应信号，并发送至处理器电路中。
[0033] 以及，处理器电路为ARM CPU，当然，也可以为其他处理芯片，或者数字电路结构， 实现数据采集、管理及上报信息。其中，处理器电路优选为STM32L071CB超低功耗MCU。
[0034] 在本实施例中，并参考图2,所述电缆监控装置110还包括LPffAN天线，所述接口 113 还包括LPWAN天线接口 1133,所述LPWAN传输模组112通过LPWAN天线接口 II33与LPWAN天线 连接。
[0035] 其中，LPWAN是LPWAN通信技术中的一种，是美国Semtech公司采用和推广的一种基 于扩频技术的超远距离无线传输方案。这一方案改变了以往关于传输距离与功耗的折衷考 虑方式，为用户提供一种简单的能实现远距离、长电池寿命、大容量的系统，进而扩展传感 网络。目前，LPWAN主要在全球免费频段运行，包括433、868、915MHz等。采用低功耗LPWAN技 术，实现了强穿透、长距离、自组网通信，克服了现有技术方案通信信号差、功耗高、依赖电 信运营商的缺点，部署简单，扩展方便。以及，在电池供电情况下提供8年运行寿命。
[0036]在本实施例中，所述运行状态信息采集接口 1132与设置在电缆121或电缆接头1 = 上的温度传感器连接，获取电缆121或电缆接头122的温度信息。或者，所述运行状态信息采 集接口 1132与设置在电缆121或电缆接头122上的电流传感器连接，获取电缆121或电缆接 头122的电流信息。
[0037] 具体地，通过温度传感器获取电缆121或电缆接头122的温度信息，从而获知电祕 121或电缆接头122的电能情况，温度越高，表示电流越大、或者发生漏电等情况，同时温度 过高也会导致电缆监控装置11〇的相关电子元器件损坏。 、
[0038] 以及，电流传感器，是一种检测装置，能感受到被测电流的信息，并能将检测感受 到的信息，按一定规律变换成为符合一定标准需要的电信号或其他所需形式的彳目息输出’ 以满足信息的传输、处理、存储、显示、记录和控制等要求。电流传感器依据测量原理不同’ 主要可分为:分流器、电磁式电流互感器、电子式电流互感器等。
[0039] 在本实施例中，所述电缆监控装置110还包括获取外部环境传感信息的环境传感 器单元115，所述环境传感器单元115与感应信号采集接口 1137连接。
[0040] 环境传感器单元115可以包括度传感器、烟雾传感器、氧气传感器、可燃气体传感 器、空气质量传感器、红外接近传感器中的一种或多种，并通过感应信号采集接口 1137将传 感信号发送至处理器模组111中。
[0041] 其中，可燃气体传感器优选为甲烷传感器;空气质量传感器优选为HS传感器;水浸 传感器是基于液体导电原理，用电极探测是否有水存在，再用传感器转换成干接点输出。通 常为常开，如果想要常闭的需要提前预定，预定时间为3天。
[0042] 在本实施例中，并参考图2,所述接口 113还包括微能信号采集接口 1131，即电源接 口 113;所述接口 113还包括GPS天线接口 1134，其中电缆监控装置110还包括GPS模组，所述 GPS模组与处理器模组111连接，用于在上报数据时，与GPS位置信息一同发送，所述GPS模组 通过GPS天线接口 1134与GPS天线连接;所述接口 113还包括调试接口 1135;调试接口 1135用 于现场在线维护。
[0043]其中，电缆监控装置110还包括一电源模块，由工业级锂电池和电场/热能能量收 集模块构成，通过与微能信号采集接口 1131接通，给整个系统提供供电。所述接口还包括微 能信号采集接口 1131，所述微能信号采集接口 1131与外部的微能采集单元相连;所述微能 采集单元通过收集周围的电磁场能量或热能，转化为电能，并通过微能信号采集接口 1131 供电至电缆监控装置
[0044]进一步地，所述电缆监控装置110的壳体116上还包括一防水透气阀117,防水透气 阀II7俗称呼吸器、透气螺丝等，外壳PAe6+20%玻纤原料注塑一体成型或者采用黄铜作硬 支体，外套耐高温硅胶0型圈，膜料与外壳通过多种紧包工艺结合在一起，具有性能稳定，安 装简单，使用时间长，防水透气性能高等特征。
[0045]在本实施例中，电缆监控装置110还包括一存储单元114，如硬盘、内存，所述存储 单元114用于存储本地数据，处理器模组111定期将所有的数据上传到云端14〇。
[0046]如图3所示，本发明提供一种分析判断模块111 1的较佳实施例。其中，图3是本发明 分析判断模块1111的结构框图。
[0047]所述处理器模组111包括一分析判断模块1111，所述分析判断模预设多个数据阈 值，并将采集到的各数据信息分别与对应的数据阈值进行对比分析，判断是否存在故障；以 及，若有故障，所述处理器模组111通过LPWAN传输模组112上传故障信息。
[0048]优选地，分析判断模块1111包括芯片及外部电路，实现数据分析对比，判断是否存 在故障。或者，分析判断模块1111包括逻辑电路，将外部获取的数据信息进行分析对比，实 现判断。
[0049] 进一步地，每一项数据都具有一数据阈值，检测实时数据信息，若数据信息超过数 据阈值的范围，则认为存在异常，即存在故障，并且将对应的的故障信息上传至云端140。
[0050] 如图4所示，本发明提供触发模块的较佳实施例。其中，图4是本发明触发模块的结 构框图。
[0051] 所述处理器模组111包括一定时触发模块1112,所述定时触发模块1112定时触发 唤醒处理器模组111;以及，所述处理器模组111还包括一事件触发模块1113,所述事件触发 模块1113预设多种事件，并在事件发生时触发唤醒处理器模组111;其中，所述处理器模组 111在被触发唤醒前处于休眠状态，并在被触发唤醒后通过接口 113采集对应的数据信息。 [0052] 进一步地，所述接口 113还包括一外部触发接口 1136。外部触发接口 1136与水浸传 感器、门禁传感器连接;有水浸或闯入事件发生时，触发该接口 113。
[0053]如图5所示，本发明提供一种局部放电测量单元的较佳实施例。其中，图5是本发明 局部放电测量单元的结构框图。
[0054]所述运行状态信息采集接口 1132与设置在电缆121或电缆接头122上的局部放电 测量单元150连接，所述局部放电测量单元150获取电缆121或电缆接头122的局部放电信 息；其中，所述处理器模组111采集局部放电信息，并判断是否存在故障，若有故障通过 LPWAN传输模组112上传故障信息。
[0055] 其中，局部放电是指当外加电压在电气设备中产生的场强，足以使绝缘部分区域 发生放电，但在放电区域内未形成固定放电通道的这种放电现象。
[0056] 在本实施例中，所述局部放电测量单元150包括紫外检测模块、臭氧监测模块、 HFCT模块。紫外检测模块通过检测紫外光辐射强度，获取局部放电量的大小;臭氧监测模块 通过臭氧浓度的检测，确认是否有放电产生;HFCT模块通过检测高频脉冲电流的大小，实现 局部放电的检测;通过这三类传感器数据的融合，可有效检测电缆121局放。
[0057]在本发明中，电缆监控装置110可广泛应用于电力电缆121隧道，配电房智能监控， 光伏发电，汽车充电站，风、气、煤、水电，地铁，飞机场，智慧农业，智慧城市，象站等公共服 务行。具有非常广阔的市场前景。
[0058] 优选地，应用在高压电力供电线路的入地化领域。
[0059]以上所述者，仅为本发明最佳实施例而已，并非用于限制本发明的范围，凡依本发 明申请专利范围所作的等效变化或修饰，皆为本发明所涵盖。
Claims (10)
1.一种电缆监控装置，其特征在于:所述电缆监控装置包括壳体、设置在壳体上的多个 接口和设置在壳体内的电路板结构，所述电路板结构分别与所述多个接口连接;其中， 所述接口包括获取电缆或电缆接头运行状态信息的运行状态信息采集接口，以及获取 外部环境传感信息的感应信号采集接口，所述电路板结构包括处理器模组和LPWAN传输模 组，所述处理器模组分别与运行状态信息采集接口、感应信号采集接口和LPWAN传输模组连 接； 以及，所述处理器模组通过LPWAN传输模组将采集到的数据信息发送至外部的网关路 由器，并通过网关路由器发送至云端;并且，所述处理器模组将采集到的数据信息进行本地 存储。
2. 根据权利要求1所述的电缆监控装置，其特征在于:所述处理器模组包括一分析判断 模块，所述分析判断模预设多个数据阈值，并将采集到的各数据信息分别与对应的数据阈 值进行对比分析，判断是否存在故障；以及，若有故障，所述处理器模组通过LPWAN传输模组 上传故障信息。
3. 根据权利要求2所述的电缆监控装置，其特征在于:所述处理器模组包括一定时触发 模块，所述定时触发模块定时触发唤醒处理器模组；以及，所述处理器模组还包括一事件触 发模块，所述事件触发模块预设多种事件，并在事件发生时触发唤醒处理器模组;其中，所 述处理器模组在被触发唤醒前处于休眠状态，并在被触发唤醒后通过接口采集对应的数据 {目息。
4. 根据权利要求3所述的电缆监控装置，其特征在于:所述接口还包括一外部触发接 □。
5. 根据权利要求1所述的电缆监控装置，其特征在于:所述电缆监控装置还包括LPWAN 天线，所述接口还包括LPWAN天线接口，所述LPWAN传输模组通过LPWAN天线接口与LPWAN天 线连接。
6. 根据权利要求1所述的电缆监控装置，其特征在于:所述运行状态信息采集接口与设 置在电缆或电缆接头上的温度传感器连接，获取电缆或电缆接头的温度信息； 或者，所述运行状态信息采集接口与设置在电缆或电缆接头上的电流传感器连接，获 取电缆或电缆接头的电流信息。
7. 根据权利要求1所述的电缆监控装置，其特征在于:所述电缆监控装置还包括获取外 部环境传感信息的环境传感器单元，所述环境传感器单元与感应信号采集接口连接;其中， 所述传感器单元包括湿度传感器、烟雾传感器、氧气传感器、可燃气体传感器、空气质量传 感器、红外接近传感器中的一种或多种。
8. 根据权利要求1所述的电缆监控装置，其特征在于:所述运行状态信息采集接口与设 置在电缆或电缆接头上的局部放电测量单元连接，所述局部放电测量单元获取电缆或电缆 接头的局部放电信息；其中，所述处理器模组采集局部放电信息，并判断是否存在故障，若 有故障通过LPWAN传输模组上传故障信息；其中，所述局部放电测量单元包括紫外检测模 块、臭氧检测模块和HFCT模块。
9. 根据权利要求1所述的电缆监控装置，其特征在于:所述电缆监控装置还包括GPS模 组，所述GPS模组提供位置信息。
10. 根据权利要求1所述的电缆监控装置，其特征在于:所述接口还包括微能信号采集 接口，所述微能信号采集接口与外部的微能采集单元相连;所述微能采集单元通过收集周 围的电磁场能量或热能，转化为电能，并通过微能信号采集接口供电至电缆监控装置。
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| CN109000739A (zh) * | 2018-10-18 | 2018-12-14 | 国网山西省电力公司太原供电公司 | 一种地下电力管网数据采集装置 |
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| CN110553756A (zh) * | 2019-09-05 | 2019-12-10 | 上海洛霖能源互联网技术合伙企业(有限合伙) | 一种电缆温度检测系统及用于该系统的无线温度传感器 |
| CN110940895A (zh) * | 2019-12-17 | 2020-03-31 | 四川赛康智能科技股份有限公司 | 电缆接头防爆灭火及温度、局放综合在线监测装置 |
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