CN203786250U - Power cable intelligent grounding box - Google Patents
Power cable intelligent grounding box Download PDFInfo
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- CN203786250U CN203786250U CN201420149915.4U CN201420149915U CN203786250U CN 203786250 U CN203786250 U CN 203786250U CN 201420149915 U CN201420149915 U CN 201420149915U CN 203786250 U CN203786250 U CN 203786250U
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Abstract
The utility model provides a power cable intelligent grounding box. The power cable intelligent grounding box comprises a cable sheath cross interconnection protection grounding box, a signal acquisition terminal which is arranged in the grounding box, current transformers on A, B and C phase lines, an antenna and a power taking current transformer which is used for power supply. The signal acquisition 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 supply module. The signal acquisition terminal receives current sample information, which is processed by the overcurrent protection module and the current sampling module, of three current transformers and temperature and humidity information transmitted by the temperature sensor and the humidity sensor for processing, and wirelessly transmits related information to a background monitoring system of a power supply department. According to the utility model, the power cable intelligent grounding box has the advantages of easy implementation, low cost and easy popularization; the effectiveness and the accuracy of cable online monitoring can be effectively improved and when the grounding box is used; and the safety of a power supply grid is ensured.
Description
Technical field
The utility model relates to power cable security of operation monitoring field, is specifically related to a kind of power cable smart grounding box.
Background technology
Along with improving constantly of China's economic fast development and Level of Urban Modernization, power cable is as the visual plant in urban distribution network, and speed of development is exceedingly fast, and urban electric power cable adopts the distribution method into ground conventionally.One of reason that city cable breaks down in actual motion is the grounding system fault of power cable, it accounts for 21% of cable fault, the oversheath of power cable in use easily because of external force damage, chemical corrosion, lightning surge or system overvoltage etc. reason, cause jacket insulation breakage to cause one or more ground connection, thereby destroy the earthed system of high-voltage cable metal sheath, cause the unbalance of cable metal sheath induction electromotive force, cause protective metal shell and the earth to form larger circulation, additional line loss increases, cable temperature increases; The long-term normal operation life of so going back entail dangers to major insulation, shortening cable line, affects the safe operation of circuit.
For preventing the generation of above-mentioned phenomenon, conventionally adopt earthing box for electric cable protection.Common earthing box for electric cable mainly contains the cross interconnected protective ground case of the direct grounding box of cable sheath, cable sheath protective ground case and cable.The inside of the direct grounding box of cable sheath is contained and is connected copper bar, copper tip etc., for the direct ground connection of cable sheath, inner without installing cables sheath protector.Cable sheath protective ground case contains cable protective layer protector with the cross interconnected protective ground case of cable sheath, is connected copper bar, copper tip etc., for the protective ground of cable sheath.Current, power cable on-line monitoring technique is progressively applied, but current power cable grounding box can't effectively adapt to the on-line monitoring needs of power cable under various environment.
Utility model content
The purpose of this utility model is: overcome the deficiencies in the prior art, provide a kind of simple in structure, cost is lower, realization is convenient, can effectively monitor and occur when abnormal uploading in time abnormal information the cable grounding state of monitoring point when being easy to promote, using, thereby can effectively improve power cable on-line monitoring validity and reliability, ensure the power cable smart grounding box of power supply safety.
The technical solution of the utility model is: power cable smart grounding box of the present utility model, comprise the cross interconnected protective ground case of cable sheath, the Packed casing of the cross interconnected protective ground case of above-mentioned cable sheath tool, is provided with 3 bridge joint copper bars arranged in a crossed manner in casing; Its design feature is: also comprise signals collecting terminal, A phase current mutual inductor, B phase current mutual inductor, C phase current mutual inductor, antenna and get energy current transformer; A phase current mutual inductor, B phase current mutual inductor and C phase current mutual inductor respectively arrange respectively 1 on 3 friendship bridge joint copper bars of the cross interconnected protective ground case of cable sheath;
Above-mentioned signals collecting terminal is fixedly installed in the cross interconnected protective ground case of cable sheath; Signals collecting terminal comprises overcurrent protection module, current sample module, temperature sensor, humidity sensor, signal processing module, GPRS module and power module;
The overcurrent protection module of signals collecting terminal is provided with the first sample rate current signal input part, the second sample rate current signal input part, the 3rd sample rate current signal input part and signal output part; Current sample mould is provided with signal input part and signal output part; Temperature sensor and humidity sensor are respectively equipped with signal output part; Signal processing module is provided with current sampling signal input end, temperature signal input end, temperature signal input end and signal output part; GPRS module is provided with signal input part and signal output part;
The first sample rate current signal input part of above-mentioned overcurrent protection module, the second sample rate current signal input part and the 3rd sample rate current signal input part are electrically connected to A phase current mutual inductor, B phase current mutual inductor and C phase current mutual inductor respective signal respectively; The signal input part of current sample module is electrically connected to the signal output part signal of overcurrent protection module; The current sampling signal input end of signal processing module is electrically connected to the signal output part signal of current sample module; The temperature signal input end of signal processing module is electrically connected to the signal output part signal of temperature sensor; The moisture signal input end of signal processing module is electrically connected to the signal output part signal of humidity sensor; The signal input part of GPRS module is electrically connected to the signal output part signal of signal processing module; The signal output part of GPRS module is electrically connected to aerial signal; Power module can current transformer be electrically connected to getting; Power module provides working power for other each modules.
Further scheme is: the casing of the cross interconnected protective ground case of above-mentioned cable sheath is square box, and casing comprises upper cover; On cover the link tester via hole that is provided with up/down perforation; The lower end of above-mentioned antenna and get can current transformer output electric wire seal after through the link tester via hole on the box cover of the cross interconnected protective ground case of cable sheath.
Further scheme is:: above-mentioned A phase current mutual inductor, B phase current mutual inductor and C phase current mutual inductor are LMZK1-10,600/5,0.5 grade of type current transformer.
Further scheme also has: on the above-mentioned bus of getting the transmission line of electricity outside the casing that can current transformer be arranged on the cross interconnected protective ground case of cable sheath; Getting current transformer to be LXK-φ 180,800/1,10W type current transformer.
The utlity model has positive effect: (1) power cable smart grounding box of the present utility model; by setting up signals collecting terminal in the cross interconnected protective ground case of existing cable sheath, increase antenna and getting energy current transformer; it is convenient to realize, and cost is lower, is easy to promote.(2) power cable smart grounding box of the present utility model, the current information of the ground strap of monitoring point that can Real-Time Monitoring place during use and the temperature and humidity information in casing, when the running status of monitoring point is undergone mutation, it enlarges markedly the information frequency that sends to power supply department background monitoring system, the staff of power supply department background monitoring system finds after the abnormal information of this monitoring point, can make quickly and easily timely respective handling, thereby can effectively improve validity and the accuracy of on-line monitoring of cable, guarantee the safety of power supply grid.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model, and the protecgulum that has omitted the casing of the cross interconnected protective ground case of cable sheath in figure does not draw;
Fig. 2 is the circuit structure block diagram of the signals collecting terminal in Fig. 1, in figure, also shown A, B, C threephase current transformer, antenna in itself and Fig. 1 and get can current transformer electrical connection;
Fig. 3 is the system architecture schematic diagram of a kind of application of the present utility model.
Reference numeral in above-mentioned accompanying drawing is as follows:
The cross interconnected protective ground case 1 of cable sheath, bridge joint copper bar 11,
Signals collecting terminal 2, overcurrent protection module 21, current sample module 22, temperature sensor 23, humidity sensor 24, signal processing module 25, GPRS module 26, power module 27,
A phase current mutual inductor 3,
B phase current mutual inductor 4,
C phase current mutual inductor 5,
Antenna 6,
Getting can current transformer 7.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
(embodiment 1)
See Fig. 1 and Fig. 2; the power cable smart grounding box of the present embodiment, mainly by the cross interconnected protective ground case 1 of cable sheath, signals collecting terminal 2, A phase current mutual inductor 3, B phase current mutual inductor 4, C phase current mutual inductor 5, antenna 6 with get and can current transformer 7 form.
The grounding box that the cross interconnected protective ground case 1 of cable sheath is prior art, seldom narrates at this.The cross interconnected protective ground case 1 of cable sheath has square seal case, and casing comprises upper cover, above covers the link tester via hole that is provided with up/down perforation; In casing, be provided with 3 bridge joint copper bars 11 arranged in a crossed manner.
Signals collecting terminal 2 is fixedly installed on the upper left quarter in the cross interconnected protective ground case 1 of cable sheath.Signals collecting terminal 2 is mainly comprised of overcurrent protection module 21, current sample module 22, temperature sensor 23, humidity sensor 24, signal processing module 25, GPRS module 26 and power module 27.Signal processing module 25 is mainly comprised of the MCU of MSP430 model.
The overcurrent protection module 21 of signals collecting terminal 2 is provided with the first sample rate current signal input part, the second sample rate current signal input part, the 3rd sample rate current signal input part and signal output part; Current sample mould 22 is provided with signal input part and signal output part; Temperature sensor 23 and humidity sensor 24 are respectively equipped with signal output part; Signal processing module 25 is provided with current sampling signal input end, temperature signal input end, temperature signal input end and signal output part; GPRS module 26 is provided with signal input part and signal output part.
The first sample rate current signal input part of overcurrent protection module 21, the second sample rate current signal input part and the 3rd sample rate current signal input part are electrically connected to A phase current mutual inductor 3, B phase current mutual inductor 4 and C phase current mutual inductor 5 respective signal respectively; The signal input part of current sample module 22 is electrically connected to the signal output part signal of overcurrent protection module 21; The current sampling signal input end of signal processing module 25 is electrically connected to the signal output part signal of current sample module 22; The temperature signal input end of signal processing module 25 is electrically connected to the signal output part signal of temperature sensor 23; The moisture signal input end of signal processing module 25 is electrically connected to the signal output part signal of humidity sensor 24; The signal input part of GPRS module 26 is electrically connected to the signal output part signal of signal processing module 25; The signal output part of GPRS module 26 is electrically connected to antenna 6 signals; Power module 27 provides working power for other each modules.Power module 27 can current transformer 7 be electrically connected to getting, and power module 27 is converted to galvanic current and presses and export the electric energy can current transformer 7 providing is provided.
A phase current mutual inductor 3, B phase current mutual inductor 4 and C phase current mutual inductor 5 respectively arrange respectively 1 on 3 friendship bridge joint copper bars 11 of the cross interconnected protective ground case 1 of cable sheath.In the present embodiment, A phase current mutual inductor 3, B phase current mutual inductor 4 and C phase current mutual inductor 5 all preferably adopt LMZK1-10,600/5,0.5 grade of type current transformer.
Antenna 6 is arranged on a side of the box cover of the cross interconnected protective ground case 1 of cable sheath.
Get and can in current transformer 7 the present embodiment, preferably adopt LXK-φ 180,800/1,10W type current transformer.Get on the bus of the transmission line of electricity outside the casing that can current transformer 7 be arranged on the cross interconnected protective ground case 1 of cable sheath; Get after the link tester via hole on the box cover of the cross interconnected protective ground case 1 of cable sheath is passed in the energy output electric wire of current transformer 7 and the lower end of antenna 6 and introduce in casing, then by the logical via seal of circuit.
Referring to Fig. 3, the present embodiment power cable smart grounding box, its principle of work and the course of work are summarized as follows:
The power cable smart grounding box of the present embodiment, during its work, can current transformer 7 obtain electric energy from cable bus by getting, and the power module 27 by signals collecting terminal 2 provides working power for it.The mode of this power supply is that than the advantage of the power supply modes such as battery power supply is convenient, has saved the managerial troubles such as replacing battery.During work, the current signal of the ground strap of A phase current mutual inductor 3, B phase current mutual inductor 4 and C phase current mutual inductor 5 Real-time Collection ABC three-phases is transferred to signal processing module 25 again and processes after the anti-excess current of overcurrent protection module 21 of signals collecting terminal 2 is processed after 22 samplings of current sample module; Temperature sensor 23 and humidity sensor 24 gather respectively real time temperature and the humidity information in casing and are transferred to signal processing module 25 and process; The single-chip microcomputer of signal processing module 25 carries out analyzing and processing according to setting program to received signal, and the information after processing is wirelessly sent to power supply department background monitoring system according to the frequency of setting through GPS module 26 and antenna 6.When the power cable smart grounding box of a certain playscript with stage directions embodiment finds that the running status of its monitoring point is undergone mutation, it enlarges markedly the information frequency that (5 times of left and right that are generally normality) send to power supply department background monitoring system, the staff of power supply department background monitoring system finds after the abnormal information of this monitoring point, conveniently immediately makes corresponding processing.
To sum up, the power cable smart grounding box of the present embodiment, by setting up signals collecting terminal in the cross interconnected protective ground case of existing cable sheath, increase antenna and getting energy current transformer, it is convenient to realize, and cost is lower, is easy to promote; The current information of the ground strap of monitoring point that can Real-Time Monitoring place when it uses and the temperature and humidity information in casing, when the running status of monitoring point is undergone mutation, it enlarges markedly the information frequency that sends to power supply department background monitoring system, the staff of power supply department background monitoring system finds after the abnormal information of this monitoring point, can make quickly and easily timely respective handling, thereby can effectively improve validity and the accuracy of on-line monitoring of cable, guarantee the safety of power supply grid.
Above embodiment is the explanation to embodiment of the present utility model; but not to restriction of the present utility model; person skilled in the relevant technique is not in the situation that departing from spirit and scope of the present utility model; can also make various conversion and variation and obtain the corresponding technical scheme being equal to, therefore all technical schemes that are equal to all should be included into scope of patent protection of the present utility model.
Claims (3)
1. a power cable smart grounding box, comprise the cross interconnected protective ground case of cable sheath (1), the Packed square box of the cross interconnected protective ground case of described cable sheath (1) tool, casing comprises upper cover, above covers the link tester via hole that is provided with up/down perforation; In casing, be provided with 3 bridge joint copper bars (11) arranged in a crossed manner; It is characterized in that: also comprise signals collecting terminal (2), A phase current mutual inductor (3), B phase current mutual inductor (4), C phase current mutual inductor (5), antenna (6) and get energy current transformer (7); A phase current mutual inductor (3), B phase current mutual inductor (4) and C phase current mutual inductor (5) respectively arrange respectively 1 on 3 friendship bridge joint copper bars (11) of the cross interconnected protective ground case of cable sheath (1); The lower end of antenna (6) and get can current transformer the output electric wire of (7) seal after through the link tester via hole on the casing of the cross interconnected protective ground case of cable sheath (1);
Described signals collecting terminal (2) is fixedly installed in the cross interconnected protective ground case of cable sheath (1); Signals collecting terminal (2) comprises overcurrent protection module (21), current sample module (22), temperature sensor (23), humidity sensor (24), signal processing module (25), GPRS module (26) and power module (27);
The overcurrent protection module (21) of signals collecting terminal (2) is provided with the first sample rate current signal input part, the second sample rate current signal input part, the 3rd sample rate current signal input part and signal output part; Current sample module (22) is provided with signal input part and signal output part; Temperature sensor (23) and humidity sensor (24) are respectively equipped with signal output part; Signal processing module (25) is provided with current sampling signal input end, temperature signal input end, temperature signal input end and signal output part; GPRS module (26) is provided with signal input part and signal output part;
The first sample rate current signal input part of described overcurrent protection module (21), the second sample rate current signal input part and the 3rd sample rate current signal input part are electrically connected to A phase current mutual inductor (3), B phase current mutual inductor (4) and C phase current mutual inductor (5) respective signal respectively; The signal input part of current sample module (22) is electrically connected to the signal output part signal of overcurrent protection module (21); The current sampling signal input end of signal processing module (25) is electrically connected to the signal output part signal of current sample module (22); The temperature signal input end of signal processing module (25) is electrically connected to the signal output part signal of temperature sensor (23); The moisture signal input end of signal processing module (25) is electrically connected to the signal output part signal of humidity sensor (24); The signal input part of GPRS module (26) is electrically connected to the signal output part signal of signal processing module (25); The signal output part of GPRS module (26) is electrically connected to antenna (6) signal; Power module (27) with get can current transformer (7) be electrically connected to; Power module (27) provides working power for other each modules.
2. power cable smart grounding box according to claim 1, is characterized in that: described A phase current mutual inductor (3), B phase current mutual inductor (4) and C phase current mutual inductor (5) are LMZK1-10,600/5,0.5 grade of type current transformer.
3. power cable smart grounding box according to claim 1, is characterized in that: on the described bus of getting the transmission line of electricity outside the casing that can current transformer (7) be arranged on the cross interconnected protective ground case of cable sheath (1); Get current transformer (7) to be LXK-φ 180,800/1,10W type current transformer.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420149915.4U CN203786250U (en) | 2014-03-28 | 2014-03-28 | Power cable intelligent grounding box |
| PCT/CN2014/092265 WO2015143885A1 (en) | 2014-03-28 | 2014-11-26 | Power cable intelligent grounding box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420149915.4U CN203786250U (en) | 2014-03-28 | 2014-03-28 | Power cable intelligent grounding box |
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| Publication Number | Publication Date |
|---|---|
| CN203786250U true CN203786250U (en) | 2014-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420149915.4U Expired - Fee Related CN203786250U (en) | 2014-03-28 | 2014-03-28 | Power cable intelligent grounding box |
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| Country | Link |
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| CN (1) | CN203786250U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103852694A (en) * | 2014-03-28 | 2014-06-11 | 江苏省电力公司常州供电公司 | Power cable intelligent grounding box |
| WO2015143885A1 (en) * | 2014-03-28 | 2015-10-01 | 江苏省电力公司常州供电公司 | Power cable intelligent grounding box |
| CN105207166A (en) * | 2015-09-22 | 2015-12-30 | 波瑞电气有限公司 | Cable branch box based on wireless communication of IPV6 smart ad-hoc network |
| CN108469542A (en) * | 2018-03-01 | 2018-08-31 | 华南理工大学 | A kind of distributed faradic computational methods of the single-core cable of the golden cloth containing insulation |
-
2014
- 2014-03-28 CN CN201420149915.4U patent/CN203786250U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103852694A (en) * | 2014-03-28 | 2014-06-11 | 江苏省电力公司常州供电公司 | Power cable intelligent grounding box |
| WO2015143885A1 (en) * | 2014-03-28 | 2015-10-01 | 江苏省电力公司常州供电公司 | Power cable intelligent grounding box |
| CN105207166A (en) * | 2015-09-22 | 2015-12-30 | 波瑞电气有限公司 | Cable branch box based on wireless communication of IPV6 smart ad-hoc network |
| CN108469542A (en) * | 2018-03-01 | 2018-08-31 | 华南理工大学 | A kind of distributed faradic computational methods of the single-core cable of the golden cloth containing insulation |
| CN108469542B (en) * | 2018-03-01 | 2019-10-18 | 华南理工大学 | A kind of distributed faradic calculation method of single-core cable containing the golden cloth that insulate |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140820 |