WO2015143885A1 - Power cable intelligent grounding box - Google Patents

Power cable intelligent grounding box Download PDF

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WO2015143885A1
WO2015143885A1 PCT/CN2014/092265 CN2014092265W WO2015143885A1 WO 2015143885 A1 WO2015143885 A1 WO 2015143885A1 CN 2014092265 W CN2014092265 W CN 2014092265W WO 2015143885 A1 WO2015143885 A1 WO 2015143885A1
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signal
module
current transformer
current
input end
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PCT/CN2014/092265
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French (fr)
Chinese (zh)
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朱辉
杜健
许箴
刘倩茜
汪浩
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江苏省电力公司常州供电公司
江苏省电力公司
国家电网公司
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Priority claimed from CN201410124387.1 external-priority
Priority claimed from CN201420149915.4U external-priority patent/CN203786250U/en
Priority claimed from CN201410124387.1A external-priority patent/CN103852694A/en
Application filed by 江苏省电力公司常州供电公司, 江苏省电力公司, 国家电网公司 filed Critical 江苏省电力公司常州供电公司
Publication of WO2015143885A1 publication Critical patent/WO2015143885A1/en

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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00Circuit 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
    • H02J13/00002Circuit 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
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00Circuit 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
    • H02J13/00006Circuit 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
    • H02J13/00022Circuit 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
    • H02J13/00024Circuit 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
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • YGENERAL 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
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS 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
    • Y04S10/00Systems supporting electrical power generation, transmission or distribution
    • Y04S10/30State monitoring, e.g. fault, temperature monitoring, insulator monitoring, corona discharge
    • YGENERAL 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
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS 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
    • Y04S40/00Systems 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
    • Y04S40/12Systems 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
    • Y04S40/126Systems 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

A power cable intelligent grounding box comprises: a cable sheath crossed interconnection protection grounding box; a signal collection terminal (2) mounted in the grounding box; a current transformer (3, 4, 5) on each of a phase line A, a phase line B, and a phase line C; an antenna (6); and an energy-obtaining current transformer (7) for power supply. The signal collection terminal (2) comprises an over-current protection module (21), a current sampling module (22), a temperature sensor (23), a humidity sensor (24), a signal processing module (25), a GPRS module (26) and a power module (27). The signal collection terminal (2) receives and processes current sampling information processed by three current transformers (3, 4, 5) by means of the over-current protection module (21) and the current sampling module (22), and temperature and humidity information transmitted by the temperature sensor (23) and the humidity sensor (24), and sends related information to a background monitoring system of the power supply department wirelessly. The power cable intelligent grounding box is convenient to implement, low in cost and easy to popularize. In use, the power cable intelligent grounding box can effectively improve validity and accuracy of cable online monitoring and ensure the safety of a power supply grid.

Description

电力电缆智能接地箱Power cable intelligent grounding box 技术领域Technical field
本发明涉及电力电缆运行安全监测领域,具体涉及一种电力电缆智能接地箱。The invention relates to the field of power cable operation safety monitoring, and particularly relates to a power cable intelligent grounding box.
背景技术Background technique
随着城市现代化水平的不断提高,电力电缆作为城市电网中的重要设备,发展速度极快,而且城市电力电缆通常采用入地的布设方法。城市电缆在实际运行中发生故障的原因之一为电力电缆的接地系统故障,其占到电缆故障的21%,电力电缆的外护套在使用过程中容易因外力损伤、化学腐蚀、雷电过电压或系统过电压的等原因,导致护套绝缘破损造成一点或多点接地,从而破坏高压电缆金属护套的接地系统,引起电缆金属护套感应电动势的失衡,导致金属护套与大地形成较大的环流,附加线损增加、电缆温度增高;长期如此还会危及主绝缘、缩短电缆线路的正常运行寿命,影响线路的安全运行。With the continuous improvement of the level of urban modernization, power cables are an important equipment in urban power grids, and the development speed is extremely fast, and urban power cables usually adopt the layout method of entering the earth. One of the causes of the failure of the urban cable in actual operation is the failure of the grounding system of the power cable, which accounts for 21% of the cable failure. The outer sheath of the power cable is easily damaged by external force, chemical corrosion, lightning overvoltage during use. Or the system overvoltage, etc., causing the insulation of the sheath to cause one or more grounding, thereby destroying the grounding system of the metal sheath of the high-voltage cable, causing the imbalance of the induced electromotive force of the metal sheath of the cable, resulting in a large metal sheath and the earth. The circulation, the additional line loss increases, and the cable temperature increases; in the long run, the main insulation will be jeopardized, the normal operating life of the cable line will be shortened, and the safe operation of the line will be affected.
为防止上述现象的发生,通常采用电缆接地箱进行保护。常见的电缆接地箱主要有电缆护层直接接地箱、电缆护层保护接地箱和电缆交叉互联保护接地箱。电缆护层直接接地箱的内部含有连接铜排、铜端子等,用于电缆护层的直接接地,内部无需安装电缆护层保护器。电缆护层保护接地箱和电缆护层交叉互联保护接地箱内含有电缆护层保护器、连接铜排、铜端子等,用于电缆护层的保护接地。当前,希望改变传统接地箱的缺点以适应现实监测需要的电缆接地箱已有所见,如公布号为CN 102590670A、名称为“高压电缆智能接地箱”的中国专利文献,即公开了一种具有一定监测功能的接地箱,但其结构不够具体;目前的电力电缆接地箱,普遍还不能有效适应电力电缆在各种环境下的在线监测需要。In order to prevent the above phenomenon, the cable grounding box is usually used for protection. Common cable grounding boxes mainly include cable sheathing direct grounding box, cable sheathing protection grounding box and cable cross-connection protection grounding box. The inside of the cable sheathing direct grounding box contains copper bars, copper terminals, etc., which are used for direct grounding of the cable sheath. There is no need to install a cable sheath protector inside. Cable sheath protection grounding box and cable sheath cross-connection protection The grounding box contains cable sheath protector, connecting copper bars, copper terminals, etc., for the protective grounding of the cable sheath. At present, the cable grounding box, which hopes to change the shortcomings of the traditional grounding box to meet the needs of real-life monitoring, has been seen. For example, the Chinese patent document entitled "High-voltage cable intelligent grounding box" published by CN 102590670A, discloses a The grounding box of the monitoring function must be monitored, but its structure is not specific enough; the current power cable grounding box is generally not able to effectively adapt to the online monitoring needs of the power cable in various environments.
发明内容Summary of the invention
本发明的目的是:克服现有技术的不足,提供一种结构简单、成本较低、实现方便、易于推广、使用时能够对监测点的电缆接地状态进行有效监测且在出现异常时能及时上传异常信息,从而可有效提高电力电缆在线监测的有效性和可靠性、保障供电安全的电力电缆智能接地箱。The object of the present invention is to overcome the deficiencies of the prior art and provide a simple structure, low cost, convenient implementation, easy to popularize, and can effectively monitor the grounding state of the cable at the monitoring point when used, and can upload in time when an abnormality occurs. Abnormal information, which can effectively improve the effectiveness and reliability of power cable online monitoring, and secure the power cable intelligent grounding box.
本发明的技术方案是:本发明的电力电缆智能接地箱,包括电缆护层交叉互联保护接地箱,上述的电缆护层交叉互联保护接地箱具有密封的箱体,箱体内设有3根交叉设置的桥接铜排;其结构特点是:还包括信号采集终端、A相电流互感器、B相电流互感器、C相电流互感器、天线和取能电流互感器;A相电流互感器、B相电流互感器和C相电流互感器在电缆护层交叉互联保护接地箱的3根交桥接铜排上分别各设置1只; The technical solution of the present invention is: the intelligent grounding box of the power cable of the present invention comprises a cable sheath cross-interconnection protection grounding box, and the above-mentioned cable sheathing cross-connection protection grounding box has a sealed box body, and three crosses are arranged in the box body. The bridged copper row is set; its structural features are: also includes signal acquisition terminal, A-phase current transformer, B-phase current transformer, C-phase current transformer, antenna and current-carrying current transformer; Phase A current transformer, B The phase current transformer and the C-phase current transformer are respectively disposed on each of the three bridged copper bars of the cable sheath cross-connection protection grounding box;
上述的信号采集终端固定设置在电缆护层交叉互联保护接地箱内;信号采集终端包括过流保护模块、电流采样模块、温度传感器、湿度传感器、信号处理模块、GPRS模块和电源模块;The signal collecting terminal is fixedly disposed in the cable sheath cross-connection protection grounding box; the signal collecting terminal comprises an overcurrent protection module, a current sampling module, a temperature sensor, a humidity sensor, a signal processing module, a GPRS module and a power module;
信号采集终端的过流保护模块设有第一采样电流信号输入端、第二采样电流信号输入端、第三采样电流信号输入端和信号输出端;电流采样模设有信号输入端和信号输出端;温度传感器和湿度传感器分别设有信号输出端;信号处理模块设有电流采样信号输入端、温度信号输入端、温度信号输入端和信号输出端;GPRS模块设有信号输入端和信号输出端;The overcurrent protection module of the signal collection terminal is provided with a first sampling current signal input end, a second sampling current signal input end, a third sampling current signal input end and a signal output end; the current sampling mode is provided with a signal input end and a signal output end. The temperature sensor and the humidity sensor respectively have a signal output end; the signal processing module is provided with a current sampling signal input end, a temperature signal input end, a temperature signal input end and a signal output end; the GPRS module is provided with a signal input end and a signal output end;
上述的过流保护模块的第一采样电流信号输入端、第二采样电流信号输入端和第三采样电流信号输入端分别与A相电流互感器、B相电流互感器和C相电流互感器对应信号电连接;电流采样模块的信号输入端与过流保护模块的信号输出端信号电连接;信号处理模块的电流采样信号输入端与电流采样模块的信号输出端信号电连接;信号处理模块的温度信号输入端与温度传感器的信号输出端信号电连接;信号处理模块的湿度信号输入端与湿度传感器的信号输出端信号电连接;GPRS模块的信号输入端与信号处理模块的信号输出端信号电连接;GPRS模块的信号输出端与天线信号电连接;电源模块与取能电流互感器电连接;电源模块为其他各模块提供工作电源。The first sampling current signal input end, the second sampling current signal input end and the third sampling current signal input end of the overcurrent protection module respectively correspond to the A phase current transformer, the B phase current transformer and the C phase current transformer respectively Signal electrical connection; the signal input end of the current sampling module is electrically connected with the signal output end signal of the overcurrent protection module; the current sampling signal input end of the signal processing module is electrically connected with the signal output end signal of the current sampling module; the temperature of the signal processing module The signal input end is electrically connected with the signal output end signal of the temperature sensor; the humidity signal input end of the signal processing module is electrically connected with the signal output end signal of the humidity sensor; the signal input end of the GPRS module is electrically connected with the signal output end signal of the signal processing module. The signal output end of the GPRS module is electrically connected with the antenna signal; the power module is electrically connected with the energy-carrying current transformer; the power module provides working power for other modules.
进一步的方案是:上述的电缆护层交叉互联保护接地箱的箱体为方形箱体,箱体包括上盖;上盖上设有上下贯通的线路通过孔;上述的天线的下端以及取能电流互感器的输出电线穿过电缆护层交叉互联保护接地箱的箱体上盖上的线路通过孔后密封。A further solution is: the above-mentioned cable sheath cross-connection protection grounding box box is a square box body, the box body includes an upper cover; the upper cover is provided with a through-hole through-hole; the lower end of the antenna and the current The output wires of the transformer are cross-connected through the cable sheath to protect the grounding box of the grounding box from the line through the hole and then sealed.
进一步的方案是::上述的A相电流互感器、B相电流互感器和C相电流互感器为LMZK1-10,600/5,0.5级型电流互感器。A further solution is as follows: The above-mentioned A-phase current transformer, B-phase current transformer and C-phase current transformer are LMZK1-10, 600/5, 0.5-level current transformers.
进一步的方案还有:上述的取能电流互感器设置在电缆护层交叉互联保护接地箱的箱体外的输电线路的母线上;取能电流互感器为LXK-φ180,800/1,10W型电流互感器。A further solution is as follows: the above-mentioned energy-carrying current transformer is arranged on the busbar of the transmission line outside the box of the cable sheath cross-connection protection grounding box; the current-carrying current transformer is LXK-φ180, 800/1, 10W type Current Transformer.
附图说明DRAWINGS
图1为本发明的结构示意图,图中省略了电缆护层交叉互联保护接地箱的箱体的前盖未画出;1 is a schematic structural view of the present invention, in which the front cover of the box body of the cable sheathing cross-connection protection grounding box is omitted;
图2为图1中的信号采集终端的电路结构框图,图中还显示了其与图1中A、B、C三相电流互感器、天线以及取能电流互感器的电连接关系;2 is a block diagram of the circuit structure of the signal acquisition terminal of FIG. 1, and the electrical connection relationship between the three-phase current transformer, the antenna and the current-carrying current transformer of FIG. 1 is also shown;
图3为本发明的一种应用的系统结构示意图。FIG. 3 is a schematic structural diagram of a system according to an application of the present invention.
上述附图中的附图标记如下:The reference numerals in the above figures are as follows:
电缆护层交叉互联保护接地箱1,桥接铜排11, Cable sheath cross-connection protection grounding box 1, bridging copper row 11,
信号采集终端2,过流保护模块21,电流采样模块22,温度传感器23,湿度传感器24,信号处理模块25,GPRS模块26,电源模块27,Signal acquisition terminal 2, overcurrent protection module 21, current sampling module 22, temperature sensor 23, humidity sensor 24, signal processing module 25, GPRS module 26, power module 27,
A相电流互感器3,Phase A current transformer 3,
B相电流互感器4,B-phase current transformer 4,
C相电流互感器5,C-phase current transformer 5,
天线6,Antenna 6,
取能电流互感器7。The current transformer 7 is taken.
具体实施方式detailed description
下面结合附图和具体实施方式对本发明作进一步详细的说明。The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.
(实施例1)(Example 1)
见图1和图2,本实施例的电力电缆智能接地箱,主要由电缆护层交叉互联保护接地箱1、信号采集终端2、A相电流互感器3、B相电流互感器4、C相电流互感器5、天线6和取能电流互感器7组成。Referring to FIG. 1 and FIG. 2, the intelligent grounding box of the power cable of the present embodiment is mainly composed of a cable sheath cross-interconnection protection grounding box 1, a signal collecting terminal 2, an A-phase current transformer 3, a B-phase current transformer 4, and a C phase. The current transformer 5, the antenna 6 and the current-carrying current transformer 7 are composed.
电缆护层交叉互联保护接地箱1为现有技术的接地箱,在此不多叙述。电缆护层交叉互联保护接地箱1具有方形的密封箱体,箱体包括上盖,上盖上设有上下贯通的线路通过孔;箱体内设有3根交叉设置的桥接铜排11。The cable sheath cross-connection protection grounding box 1 is a prior art grounding box and will not be described here. The cable sheath cross-connection protection grounding box 1 has a square sealed box body, the box body includes an upper cover, and the upper cover is provided with a through-hole through-hole; the box body is provided with three bridged copper bars 11 arranged at an intersection.
信号采集终端2固定设置在电缆护层交叉互联保护接地箱1内的左上部。信号采集终端2主要由过流保护模块21、电流采样模块22、温度传感器23、湿度传感器24、信号处理模块25、GPRS模块26和电源模块27组成。信号处理模块25主要由MSP430型号的MCU组成。The signal collecting terminal 2 is fixedly disposed at the upper left portion of the cable sheath cross-connect protection grounding box 1. The signal collecting terminal 2 is mainly composed of an overcurrent protection module 21, a current sampling module 22, a temperature sensor 23, a humidity sensor 24, a signal processing module 25, a GPRS module 26, and a power module 27. The signal processing module 25 is mainly composed of an MCU of the MSP430 model.
信号采集终端2的过流保护模块21设有第一采样电流信号输入端、第二采样电流信号输入端、第三采样电流信号输入端和信号输出端;电流采样模22设有信号输入端和信号输出端;温度传感器23和湿度传感器24分别设有信号输出端;信号处理模块25设有电流采样信号输入端、温度信号输入端、温度信号输入端和信号输出端;GPRS模块26设有信号输入端和信号输出端。The overcurrent protection module 21 of the signal collecting terminal 2 is provided with a first sampling current signal input end, a second sampling current signal input end, a third sampling current signal input end and a signal output end; the current sampling mode 22 is provided with a signal input end and The signal output end; the temperature sensor 23 and the humidity sensor 24 are respectively provided with signal output ends; the signal processing module 25 is provided with a current sampling signal input end, a temperature signal input end, a temperature signal input end and a signal output end; the GPRS module 26 is provided with a signal. Input and signal output.
过流保护模块21的第一采样电流信号输入端、第二采样电流信号输入端和第三采样电流信号输入端分别与A相电流互感器3、B相电流互感器4和C相电流互感器5对应信号电连接;电流采样模块22的信号输入端与过流保护模块21的信号输出端信号电连接;信号处理模块25的电流采样信号输入端与电流采样模块22的信号输出端信号电连接;信号处理模块25的温度信号输入端与温度传感器23的信号输出端信号电连接;信号处理模块25的湿度信号输入端与湿度传感器24的信号输出端信号电连接;GPRS 模块26的信号输入端与信号处理模块25的信号输出端信号电连接;GPRS模块26的信号输出端与天线6信号电连接;电源模块27为其他各模块提供工作电源。电源模块27与取能电流互感器7电连接,电源模块27将取能电流互感器7提供的电能转换为稳定的直流电压输出。The first sampling current signal input end, the second sampling current signal input end and the third sampling current signal input end of the overcurrent protection module 21 are respectively connected with the A phase current transformer 3, the B phase current transformer 4 and the C phase current transformer 5 corresponding to the signal electrical connection; the signal input end of the current sampling module 22 is electrically connected to the signal output end signal of the overcurrent protection module 21; the current sampling signal input end of the signal processing module 25 is electrically connected to the signal output end of the current sampling module 22 The temperature signal input end of the signal processing module 25 is electrically connected to the signal output end signal of the temperature sensor 23; the humidity signal input end of the signal processing module 25 is electrically connected to the signal output end signal of the humidity sensor 24; GPRS The signal input end of the module 26 is electrically connected to the signal output end signal of the signal processing module 25; the signal output end of the GPRS module 26 is electrically connected to the antenna 6 signal; and the power supply module 27 provides operating power for the other modules. The power module 27 is electrically connected to the energy-carrying current transformer 7, and the power module 27 converts the power provided by the current-carrying current transformer 7 into a stable DC voltage output.
A相电流互感器3、B相电流互感器4和C相电流互感器5在电缆护层交叉互联保护接地箱1的3根交桥接铜排11上分别各设置1只。本实施例中,A相电流互感器3、B相电流互感器4和C相电流互感器5均优选采用LMZK1-10,600/5,0.5级型电流互感器。The A-phase current transformer 3, the B-phase current transformer 4, and the C-phase current transformer 5 are respectively disposed one on each of the three bridged copper bars 11 of the cable sheath cross-connection protection grounding box 1. In this embodiment, the A-phase current transformer 3, the B-phase current transformer 4, and the C-phase current transformer 5 are preferably LMZK1-10, 600/5, 0.5-type current transformers.
天线6设置在电缆护层交叉互联保护接地箱1的箱体上盖的一侧。The antenna 6 is disposed on one side of the upper cover of the casing of the cable sheath cross-connection protection grounding box 1.
取能电流互感器7本实施例中优选采用LXK-φ180,800/1,10W型电流互感器。取能电流互感器7设置在电缆护层交叉互联保护接地箱1的箱体外的输电线路的母线上;取能电流互感器7的输出电线以及天线6的下端穿过电缆护层交叉互联保护接地箱1的箱体上盖上的线路通过孔后引入箱体内,再将电路通过孔密封。The current-carrying current transformer 7 is preferably a LXK-φ180, 800/1, 10W type current transformer in this embodiment. The current-carrying current transformer 7 is disposed on the busbar of the transmission line outside the box of the cable sheath cross-connection protection grounding box 1; the output wire of the current-carrying current transformer 7 and the lower end of the antenna 6 are cross-connected through the cable sheathing protection The line on the upper cover of the box of the grounding box 1 is introduced into the box through the hole, and the circuit is sealed through the hole.
参见图3,本实施例电力电缆智能接地箱,其工作原理和工作过程简述如下:Referring to FIG. 3, the working principle and working process of the power cable intelligent grounding box of the present embodiment are as follows:
本实施例的电力电缆智能接地箱,其工作时,由取能电流互感器7从电缆母线上取得电能,通过信号采集终端2的电源模块27为其提供工作电源。这种供电的方式较之电池等供电方式的优势在于供电方便,省去了更换电池等管理上的麻烦。工作时,A相电流互感器3、B相电流互感器4和C相电流互感器5实时采集ABC三相的接地母线的电流信号,经信号采集终端2的过流保护模块21防过电流处理后再经电流采样模块22采样后传输给信号处理模块25处理;温度传感器23和湿度传感器24分别采集箱体内的实时温度和湿度信息并传输给信号处理模块25处理;信号处理模块25的单片机按照设定程序对所接收的信号进行分析处理,并将处理后的信息按照设定的频率经GPS模块26和天线6无线发送给供电部门后台监控系统。当某一台本实施例的电力电缆智能接地箱发现其监测点的运行状态发生突变时,其显著增大(一般为常态的5倍左右)发送给供电部门后台监控系统的信息频率,供电部门后台监控系统的工作人员发现该监测点的异常信息后,方便即时作出相应的处理。In the power cable intelligent grounding box of the embodiment, during the operation, the energy-carrying current transformer 7 takes power from the cable bus, and the power module 27 of the signal collecting terminal 2 supplies the working power. The advantage of this type of power supply compared to the power supply mode of the battery is that the power supply is convenient, and the management trouble of replacing the battery is eliminated. During operation, the A-phase current transformer 3, the B-phase current transformer 4 and the C-phase current transformer 5 collect the current signal of the ABC three-phase grounding bus in real time, and the overcurrent protection module 21 of the signal collecting terminal 2 prevents overcurrent processing. After being sampled by the current sampling module 22, the signal is sent to the signal processing module 25 for processing; the temperature sensor 23 and the humidity sensor 24 respectively collect the real-time temperature and humidity information in the box and transmit it to the signal processing module 25 for processing; the single-chip microcomputer of the signal processing module 25 follows The setting program analyzes and processes the received signal, and wirelessly transmits the processed information to the power supply department background monitoring system via the GPS module 26 and the antenna 6 according to the set frequency. When a certain intelligent grounding box of the power cable of the present embodiment finds that the running state of the monitoring point is abrupt, the information frequency of the monitoring system sent to the power supply department is significantly increased (generally about 5 times of the normal state), and the power supply department backstage After the monitoring system staff finds the abnormal information of the monitoring point, it is convenient to make corresponding processing immediately.
综上,本实施例的电力电缆智能接地箱,通过在现有的电缆护层交叉互联保护接地箱内增设信号采集终端、增加天线和取能电流互感器,实现方便,成本较低,易于推广;其使用时能够实时监测所在的监测点的接地母线的电流信息及箱体内的温度和湿度信息,当监测点的运行状态发生突变时,其显著增大发送给供电部门后台监控系统的信息频率,供电部门后台监控系统的工作人员发现该监测点的异常信息后,可方便快捷地作出及时相应处理,从而能够有效提高电缆在线监测的有效性和准确性,保证供电电网的安全。 In summary, the power cable intelligent grounding box of the present embodiment is convenient to implement, has low cost, and is easy to promote by adding a signal collecting terminal, an antenna, and an energy-carrying current transformer in the existing cable sheath cross-connection protection grounding box. When used, it can monitor the current information of the grounding busbar of the monitoring point and the temperature and humidity information of the box in real time. When the running state of the monitoring point is abrupt, it significantly increases the frequency of information sent to the background monitoring system of the power supply department. After the staff of the background monitoring system of the power supply department finds the abnormal information of the monitoring point, it can conveniently and quickly make corresponding and timely processing, thereby effectively improving the effectiveness and accuracy of the online monitoring of the cable and ensuring the safety of the power supply network.
以上实施例是对本发明的具体实施方式的说明,而非对本发明的限制,有关技术领域的技术人员在不脱离本发明的精神和范围的情况下,还可以做出各种变换和变化而得到相对应的等同的技术方案,因此所有等同的技术方案均应该归入本发明的专利保护范围。The above embodiments are illustrative of the specific embodiments of the present invention, and are not intended to limit the scope of the invention, and various modifications and changes can be made without departing from the spirit and scope of the invention. Corresponding equivalent technical solutions, therefore, all equivalent technical solutions should be included in the scope of patent protection of the present invention.
工业应用性Industrial applicability
本发明具有积极的效果:(1)本发明的电力电缆智能接地箱,通过在现有的电缆护层交叉互联保护接地箱内增设信号采集终端、增加天线和取能电流互感器,实现方便,成本较低,易于推广。The invention has positive effects: (1) The power cable intelligent grounding box of the invention realizes convenience by adding a signal collecting terminal, adding an antenna and absorbing a current transformer in the existing cable sheath cross-connection protection grounding box, Low cost and easy to promote.
(2)本发明的电力电缆智能接地箱,使用时能够实时监测所在的监测点的接地母线的电流信息及箱体内的温度和湿度信息,当监测点的运行状态发生突变时,其显著增大发送给供电部门后台监控系统的信息频率,供电部门后台监控系统的工作人员发现该监测点的异常信息后,可方便快捷地作出及时相应处理,从而能够有效提高电缆在线监测的有效性和准确性,保证供电电网的安全。 (2) The intelligent grounding box of the power cable of the invention can monitor the current information of the grounding busbar of the monitoring point and the temperature and humidity information of the box in real time when used, and when the operating state of the monitoring point is abrupt, it increases significantly. The information frequency sent to the background monitoring system of the power supply department, after the staff of the power supply department background monitoring system finds the abnormal information of the monitoring point, it can conveniently and quickly make corresponding and timely processing, thereby effectively improving the effectiveness and accuracy of online cable monitoring. To ensure the safety of the power supply grid.

Claims (4)

  1. 一种电力电缆智能接地箱,包括电缆护层交叉互联保护接地箱(1),所述的电缆护层交叉互联保护接地箱(1)具有密封的箱体,箱体内设有3根交叉设置的桥接铜排(11);其特征在于:还包括信号采集终端(2)、A相电流互感器(3)、B相电流互感器(4)、C相电流互感器(5)、天线(6)和取能电流互感器(7);A相电流互感器(3)、B相电流互感器(4)和C相电流互感器(5)在电缆护层交叉互联保护接地箱(1)的3根交桥接铜排(11)上分别各设置1只;An intelligent grounding box for a power cable, comprising a cable sheath cross-connection protection grounding box (1), the cable sheath cross-connecting protection grounding box (1) has a sealed box body, and three cross-settings are arranged in the box body Bridged copper busbar (11); characterized in that it further comprises a signal acquisition terminal (2), an A-phase current transformer (3), a B-phase current transformer (4), a C-phase current transformer (5), and an antenna ( 6) and the current-carrying current transformer (7); the A-phase current transformer (3), the B-phase current transformer (4) and the C-phase current transformer (5) in the cable sheath cross-connection protection grounding box (1) One of each of the three cross-connected copper bars (11) is provided;
    所述的信号采集终端(2)固定设置在电缆护层交叉互联保护接地箱(1)内;信号采集终端(2)包括过流保护模块(21)、电流采样模块(22)、温度传感器(23)、湿度传感器(24)、信号处理模块(25)、GPRS模块(26)和电源模块(27);The signal collecting terminal (2) is fixedly disposed in the cable sheath cross-connection protection grounding box (1); the signal collecting terminal (2) includes an overcurrent protection module (21), a current sampling module (22), and a temperature sensor ( 23), humidity sensor (24), signal processing module (25), GPRS module (26) and power module (27);
    信号采集终端(2)的过流保护模块(21)设有第一采样电流信号输入端、第二采样电流信号输入端、第三采样电流信号输入端和信号输出端;电流采样模块(22)设有信号输入端和信号输出端;温度传感器(23)和湿度传感器(24)分别设有信号输出端;信号处理模块(25)设有电流采样信号输入端、温度信号输入端、温度信号输入端和信号输出端;GPRS模块(26)设有信号输入端和信号输出端;The overcurrent protection module (21) of the signal acquisition terminal (2) is provided with a first sampling current signal input end, a second sampling current signal input end, a third sampling current signal input end and a signal output end; and a current sampling module (22) The signal input end and the signal output end are provided; the temperature sensor (23) and the humidity sensor (24) respectively have signal output ends; the signal processing module (25) is provided with a current sampling signal input end, a temperature signal input end, and a temperature signal input. Terminal and signal output; GPRS module (26) is provided with a signal input end and a signal output end;
    所述的过流保护模块(21)的第一采样电流信号输入端、第二采样电流信号输入端和第三采样电流信号输入端分别与A相电流互感器(3)、B相电流互感器(4)和C相电流互感器(5)对应信号电连接;电流采样模块(22)的信号输入端与过流保护模块(21)的信号输出端信号电连接;信号处理模块(25)的电流采样信号输入端与电流采样模块(22)的信号输出端信号电连接;信号处理模块(25)的温度信号输入端与温度传感器(23)的信号输出端信号电连接;信号处理模块(25)的湿度信号输入端与湿度传感器(24)的信号输出端信号电连接;GPRS模块(26)的信号输入端与信号处理模块(25)的信号输出端信号电连接;GPRS模块(26)的信号输出端与天线(6)信号电连接;电源模块(27)与取能电流互感器(7)电连接;电源模块(27)为其他各模块提供工作电源。The first sampling current signal input end, the second sampling current signal input end and the third sampling current signal input end of the overcurrent protection module (21) are respectively connected with the A phase current transformer (3) and the B phase current transformer (4) Corresponding to the signal electrical connection of the C-phase current transformer (5); the signal input end of the current sampling module (22) is electrically connected to the signal output end signal of the overcurrent protection module (21); the signal processing module (25) The current sampling signal input end is electrically connected to the signal output end signal of the current sampling module (22); the temperature signal input end of the signal processing module (25) is electrically connected to the signal output end signal of the temperature sensor (23); the signal processing module (25) The humidity signal input end is electrically connected to the signal output end signal of the humidity sensor (24); the signal input end of the GPRS module (26) is electrically connected to the signal output end signal of the signal processing module (25); the GPRS module (26) The signal output terminal is electrically connected to the antenna (6) signal; the power module (27) is electrically connected to the energy-carrying current transformer (7); and the power module (27) provides working power for the other modules.
  2. 根据权利要求1所述的电力电缆智能接地箱,其特征在于:所述的电缆护层交叉互联保护接地箱(1)的箱体为方形箱体,箱体包括上盖;上盖上设有上下贯通的线路通过孔;所述的天线(6)的下端以及取能电流互感器(7)的输出电线穿过电缆护层交叉互联保护接地箱(1)的箱体上盖上的线路通过孔后密封。The power cable intelligent grounding box according to claim 1, wherein the cable sheathing cross-protection grounding box (1) has a square box body, the box body comprises an upper cover, and the upper cover is provided with the upper cover. The upper and lower through-line passes through the hole; the lower end of the antenna (6) and the output wire of the current-carrying current transformer (7) pass through the cable sheath to cross-connect the line on the upper cover of the protective grounding box (1) Sealed behind the hole.
  3. 根据权利要求1所述的电力电缆智能接地箱,其特征在于:所述的A相电 流互感器(3)、B相电流互感器(4)和C相电流互感器(5)为LMZK1-10,600/5,0.5级型电流互感器。The power cable intelligent grounding box according to claim 1, wherein said A phase electricity The flow transformer (3), the B-phase current transformer (4) and the C-phase current transformer (5) are LMZK1-10, 600/5, 0.5-level current transformers.
  4. 根据权利要求1所述的电力电缆智能接地箱,其特征在于:所述的取能电流互感器(7)设置在电缆护层交叉互联保护接地箱(1)的箱体外的输电线路的母线上;取能电流互感器(7)为LXK-φ180,800/1,10W型电流互感器。 The power cable intelligent grounding box according to claim 1, wherein the energy-carrying current transformer (7) is disposed on a busbar of a transmission line outside the box of the cable sheath cross-connection protection grounding box (1). The current-carrying current transformer (7) is a LXK-φ180, 800/1, 10W type current transformer.
PCT/CN2014/092265 2014-03-28 2014-11-26 Power cable intelligent grounding box WO2015143885A1 (en)

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CN106226689A (en) * 2016-07-28 2016-12-14 国网江苏省电力公司常州供电公司 GIS device disconnecting switch abnormal vibrations on-line monitoring system
GB2556975A (en) * 2017-09-15 2018-06-13 Secure Substation Ltd Cover Assembly
GB2556975B (en) * 2017-09-15 2019-04-17 Connors Building & Restoration Ltd Cover Assembly

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