CN204705416U - 10kv cable line joint monitoring alarm device - Google Patents
10kv cable line joint monitoring alarm device Download PDFInfo
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- CN204705416U CN204705416U CN201520446774.7U CN201520446774U CN204705416U CN 204705416 U CN204705416 U CN 204705416U CN 201520446774 U CN201520446774 U CN 201520446774U CN 204705416 U CN204705416 U CN 204705416U
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Abstract
The utility model provides 10KV cable line joint monitoring alarm device, the monitoring alarm device comprising supply unit and be connected with described supply unit; Described monitoring alarm device comprises watch-dog, temperature sensor and alarm, and described alarm comprises audible-visual annunciator and telecommunication devices, and the probe of described temperature sensor contacts with the cable end in guard box; Described supply unit is capacitor voltage-dropping power supply device, comprises high-voltage line capacitor and power converting circuit.The utility model provides 10KV cable line joint monitoring alarm device; utilize the power taking of 10KV distribution line; realize the operation such as online supply source, monitoring, warning to device, reduce cable line joint and guard box accident rate to a great extent, should be widely promoted and use.
Description
Technical field
The utility model relates to 10KV electric circuit inspection technical field, particularly relates to 10KV cable line joint monitoring alarm device.
Background technology
In high voltage power transmission application, distance between transformer station to power load is often long, if adopt the mode of many small size cable transmission on the line, often cause cable to use waste, so in outlet in power load, often use the large cable outlet of trunk, then in close to load, main cable is divided into some small size cables again, accesses load by small size cable, such mode of connection is widely used in power supply, the little customer power supplies such as the street lamp in urban distribution network; Meanwhile, on a long circuit, the length of cable cannot meet the requirement of circuit, and that just must use cable splice to transfer.So, when short-distance transmission, usually directly adopt cable intermediate joint, but time circuit is long, no matter is cable protection or cable splice, all should not directly adopts joint simple connection.Rule of thumb, on the cable line of more than 1000m, in order to ensure safety, can transfer by consideration guard box wherein.
But; owing to running the reasons such as the time limit is longer, equipment operating environment is severe; cable splice in guard box easily breaks down; simultaneously; because manpower is safeguarded not in place; outdoor casing is also easy to be damaged, and therefore needs a kind of monitoring alarm device adopting automatic control means, and this is necessary to reduction accident rate.Because guard box distribution comparatively disperses; so cannot concentrate or provide municipal low-tension supply to be device supply source nearby; so; during design such device; the automatic operating of its device element will be considered on the one hand; on the other hand, need for monitoring alarm equipment its selected a kind of convenient, safe, small and exquisite, be easy to the supply device that realizes.
Utility model content
The purpose of this utility model is to solve the problems of the technologies described above, and provides 10KV cable line joint monitoring alarm device, utilizes the power taking of 10KV distribution line, realizes the operation such as online supply source, monitoring, warning to device.
For achieving the above object, the technical scheme that the utility model adopts is: 10KV cable line joint monitoring alarm device, is arranged in the guard box of cable line joint, the monitoring alarm device comprising supply unit and be connected with described supply unit; Described monitoring alarm device comprises watch-dog, temperature sensor and alarm, and described alarm comprises audible-visual annunciator and telecommunication devices, and the probe of described temperature sensor contacts with the cable end in guard box; Described supply unit is capacitor voltage-dropping power supply device, comprises high-voltage line capacitor and power converting circuit.
Described high-voltage line capacitor is connected with 10KV high-voltage conducting wires by heat-explosion type disconnector.
Described power converting circuit is connected with high-voltage line capacitor, comprises Voltage stabilizing module, buck DC/DC conversion module and voltage compare control module.
Described Voltage stabilizing module is parallel electronic regulation circuit, comprises bridge rectifier circuit, capacitor filter and field-effect transistor shunt regulating circuit; Described voltage compare control module comprises two-stage amplifying circuit, and connects voltage monitor.
Described high-voltage line capacitor is connected with lightning arrester.
Described telecommunication devices comprises wireless launcher.
Described watch-dog is video monitoring apparatus, the multichannel input type video recorder comprising thermal infrared imager, visible light camera and be connected with both.
Described thermal infrared imager and described visible light camera adopt presetting bit The Cloud Terrace to fix, and guard box top arranges support crane span structure, and The Cloud Terrace is arranged at described supporting bridge top of the trellis, and The Cloud Terrace periphery arranges protective cover.
The utility model device proposes solution not mainly for existing cable protection case and cable splice control and monitoring, realize applicability and the Automated condtrol of monitoring alarm device, remote alarms can be sent according to temperature of cable junction change, and monitoring remote video and transmission can be carried out to cable protection case, on the one hand, monitoring mainly comprises the monitoring temperature of cable line joint and the video monitoring of route protection case, wherein, monitoring temperature relies on temperature sensor, probe contacts with the cable end in guard box, can integrated monolithic movement sheet and storer in alarm, the alarm temperature value that sample temperature is transferred in storer through singlechip chip carries out size comparison, thus determine whether send alerting signal, when sample temperature value reaches criticality alarm value, single-chip microcomputer is while drive audible-visual annunciator to send sound and light alarm on the spot, as hummer and alarm lamp, drive telecommunication devices simultaneously, with the form of wireless transmit, current temperature value and alerting signal are transferred to the central control room of cable line, as the mode adopting wireless GSM to launch, warning message is notified in time on the mobile phone of Central Control Room staff, thus the real-time monitoring realized temperature of cable junction, be convenient to staff's Timeliness coverage dangerous situation factor, take measures to investigate fault, for the video monitoring of route protection case, what adopt is video monitor, monitoring both can in protection casing, also can with each guard box for initial point, carry out the panoramic range monitoring of circuit, form circuit monitoring network, the multichannel input type video recorder that the video monitor be installed on single guard box comprises thermal infrared imager, visible light camera and is connected with both, thermal infrared imager and visible light camera adopt presetting bit The Cloud Terrace to fix, The Cloud Terrace is arranged at supporting bridge top of the trellis, The Cloud Terrace arranges outer protective cover, and supporting bridge erection is placed in guard box top.Thermal infrared imager coordinates with visible light camera, both are placed on same presetting bit The Cloud Terrace, thermal infrared imager is by the form of infrared radiation signal, be imaged on infrared eye through receiving optics and optical mechaical scanning mechanism, again by detector by signal through prime amplifier with after further amplifying process, have by bright and dark light interference, the visible ability of details.Thermal imaging system normally shows with scenery temperature corresponding to darker gray scale; When contrary display then with the comparatively higher scenery temperature of dark gray correspondence, simultaneously, device does not meet human visual system in view of infrared image, and the supervision object to panorama, by setting up visible light camera, propose the integration technology of visible ray and infrared image, by image registration and data fusion, obtain the composograph paying close attention to content enhancing, the infrared monitoring mode of this composite type, more traditional analog image, the information antijamming capability of its figure pattern is strong, is not subject to the impact of transmission line signals decay and external interference.
The outer protective cover of presetting bit The Cloud Terrace can choose hard tempered glass, prevents interference and the destruction in external interference source, ensures instrument security of operation.Thermal infrared imager can realize not stopping transport, do not contact, carry out imaging to each details of control point quickly and intuitively, and visible light camera realizes the overall view monitoring in guarded region, with thermal infrared imager synchronization monitoring under the control of The Cloud Terrace; Thermal infrared imager and high power zoom visible light camera are arranged on same platform by presetting bit The Cloud Terrace, both the synchronism that two cameras monitor can have been ensured, also the problem that infrared thermal imagery is difficult to identify overall scenario is solved, be convenient to the concrete condition judging control point in time, for accurately judging and taking corresponding measure to strive for the valuable time.Presetting bit The Cloud Terrace is adjustable, can Long-distance Control, the mobile of presetting bit The Cloud Terrace relies on electric rotating machine, motor can be connected with telecommunication devices, mobile steering order according to video monitoring needs, by remote controllers, can input in The Cloud Terrace by staff, thus be convenient to setting and the selection of multiple observation place, be conducive to the conduct monitoring at all levels to entirety.
Video monitor is also connected with alarm, can the mobile object of induction cable guard box periphery automatically, and such as people, animal, bird etc., send alarm signal to control center, also can give the alarm in locality acousto-optic, and record a video to object.Video monitoring system is remote controlled, and heart display in the controlling, or is shown on computers by network in real time, realizes the functions such as antitheft, warning, floor manager.
On the other hand, this device can have a reliable and stable operating power, for monitoring alarm device is powered, because guard box distribution comparatively disperses, cannot concentrate or municipal low-tension supply is provided nearby, simultaneously, the space of guard box is often narrower and small, higher to the volume requirement of power supply; The utility model proposes the capacitive high voltage power taking being applicable to 10KV guard box; core adopts special high-voltage line capacitor directly to get energy from high-voltage conducting wires; thus omit the larger 10KV voltage transformer (VT) of size; reach the downsizing of source-taking apparatus volume; insulator chain is in parallel with high-voltage line capacitor as the superpotential insulating supporting of transmission line of electricity, i.e. the 10KV guard box power taking pattern of high-voltage line capacitor step-down-parallel electronic regulator voltage stabilizing-buck DC/DC conversion-heat-explosion type disconnector protection.High-voltage line capacitor wherein adopts the appearance design identical with gapless leakage conductor, the mounting process identical with gapless leakage conductor easy to use.Parallel voltage stabilizer will flow through the current bypass ground connection of high-voltage line capacitor, and by voltage stabilization a few hectovolt extremely several kilovolts, finally realize tens watts of power stages to a few hectowatt.
10KV guard box capacitance decompression electricity getting system forms primarily of high-voltage line capacitor and power converting circuit, when heat-explosion type disconnector can guarantee high-voltage line capacitor fault and transmission line of electricity depart from, assurance device stable operation; Power converting circuit is primarily of Voltage stabilizing module, buck DC/DC conversion module, voltage compare control module composition.Voltage stabilizing module adopts the mode of bridge rectifier, capacitor filtering and field-effect transistor parallel voltage-stabilizing to carry out voltage stabilizing, and capacitor output AC voltage is stabilized in about 310V; Stabilized circuit outputting voltage is finally converted to 24V DC voltage by buck DC/DC conversion module, is transformed into low-voltage, high-current by high voltage-small current, finally realizes tens watts of power stages to a few hectowatt.Voltage compare control circuit can carry out cut-offfing of pilot relay according to voltage monitor power demand, and then closed or cut-out resistance, and power demand is passed to subsequent conditioning circuit, ensures that circuit long-term stability is run and is operated in low consumption state.For needs DC ice-melting, circuit uncharged situation during ice-melt, supply unit installs batteries to store energy additional, can meet the power requirement of voltage monitor at short notice, realize the uninterrupted power supply of supply unit.
Traditional Voltage stabilizing module is made up of power transformer, rectification circuit, filtering circuit, and the design carries out the parallel electronic regulation circuit of Curve guide impeller on the basis of existing Voltage stabilizing module.Parallel electronic regulation circuit adopts input end series connection, the cascade system of output terminal parallel connection.Rectification circuit adopts bridge rectifier structure, alternating voltage is changed into the DC voltage of pulsation, filtering circuit is made up of reactance component, carries out filtering by the mode of shunt capacitance in circuit, the DC voltage of pulsation is become the DC voltage that fluctuation is little, smoothness is high.
The DC voltage that the alternating voltage that high-voltage line capacitor obtains from high-voltage conducting wires obtains after overcommutation, filtering, voltage stabilizing process needs power conversion module through the input of wide region, doubleway output to obtain stable 12V or 24V output voltage, to meet the energy supply demand of equipment, working relative humidity is low, antijamming capability is strong, peripheral circuit is fairly simple, volume is little, is more convenient for installing and using.
In order to meet the power demand of voltage monitor and protect DC/DC conversion module, the utility model devises voltage compare control circuit, and voltage compare control circuit is formed primarily of amplifying circuit, voltage comparator circuit and relay drive circuit.Its core devices is relay, and circuit can carry out cut-offfing of pilot relay according to voltage monitor power demand, and then closed or cut-out front end resistance, power demand is passed to subsequent conditioning circuit, ensures that circuit long-term stability is run and is operated in low consumption state.High-voltage line capacitor is connected with lightning arrester, impacts for preventing the superpotential such as thunder and lightning.
So just by the capacitive stepdown way to take power of 10KV guard box, adopting special high-voltage line capacitor directly to get from high-voltage conducting wires can, both can direct-furnish rated voltage be 220V damp-eliminating apparatus use, also direct current 48V, 24V, 12V etc. can be exported through voltage transformation, to obtain the stable reliable power supply of Energy transmission realization to each monitoring equipment of 10KV guard box, save the design cost of system power supply part, can long-term non-maintaining operation; Special high-voltage line capacitor can tolerate lightning impulse voltage, the industrial frequency AC trial voltage of procedure making, and interior insulation and external insulation all meet line insulation level, and capacity meets the requirement of power conversion.
The utility model can utilize the power taking of 10KV distribution line; realize the monitoring alarm function to cable splice and guard box thereof; circuit is simple; device volume is little; lightweight, both meet national standard, turn improve the stability of equipment use simultaneously; reduce cable line joint and guard box accident rate to a great extent, should be widely promoted and use.
Accompanying drawing explanation
Fig. 1 is the composition structural drawing of the utility model device.
Fig. 2 is the utility model device energy taking device structural drawing.
Fig. 3 is the utility model device Voltage stabilizing module circuit diagram.
Fig. 4 is the utility model device amplifying circuit circuit diagram.
Fig. 5 is the utility model device voltage comparator circuit figure.
Fig. 6 is the utility model device voltage monitoring equipment circuit diagram.
Embodiment
As shown in Figures 1 to 6,10KV cable line joint monitoring alarm device, is arranged in the guard box of cable line joint, the monitoring alarm device 2 comprising supply unit 1 and be connected with described supply unit; Described monitoring alarm device comprises watch-dog, temperature sensor 4 and alarm, and described alarm comprises audible-visual annunciator 5 and telecommunication devices 6, and the probe of described temperature sensor contacts with the cable end in guard box; Described supply unit is capacitor voltage-dropping power supply device, comprises high-voltage line capacitor 7 and power converting circuit 8.
Described high-voltage line capacitor is connected with 10KV high-voltage conducting wires by heat-explosion type disconnector 9.
Described power converting circuit is connected with high-voltage line capacitor, comprises Voltage stabilizing module, buck DC/DC conversion module and voltage compare control module.
Described Voltage stabilizing module is parallel electronic regulation circuit, comprises bridge rectifier circuit, capacitor filter and field-effect transistor shunt regulating circuit; Described voltage compare control module comprises two-stage amplifying circuit, and connects voltage monitor.
Described high-voltage line capacitor is connected with lightning arrester 3.
Described telecommunication devices comprises wireless launcher.
Described watch-dog is video monitoring apparatus, the multichannel input type video recorder 12 comprising thermal infrared imager 10, visible light camera 11 and be connected with both.
Described thermal infrared imager and described visible light camera adopt presetting bit The Cloud Terrace to fix, and guard box top arranges support crane span structure, and The Cloud Terrace is arranged at described supporting bridge top of the trellis, and The Cloud Terrace periphery arranges protective cover.
The utility model device proposes solution not mainly for existing cable protection case and cable splice control and monitoring, realize applicability and the Automated condtrol of monitoring alarm device, remote alarms can be sent according to temperature of cable junction change, and monitoring remote video and transmission can be carried out to cable protection case, on the one hand, monitoring mainly comprises the monitoring temperature of cable line joint and the video monitoring of route protection case, wherein, monitoring temperature relies on temperature sensor, probe contacts with the cable end in guard box, can integrated monolithic movement sheet and storer in alarm, the alarm temperature value that sample temperature is transferred in storer through singlechip chip carries out size comparison, thus determine whether send alerting signal, when sample temperature value reaches criticality alarm value, single-chip microcomputer is while drive audible-visual annunciator to send sound and light alarm on the spot, as hummer and alarm lamp, drive telecommunication devices simultaneously, with the form of wireless transmit, current temperature value and alerting signal are transferred to the central control room of cable line, as the mode adopting wireless GSM to launch, warning message is notified in time on the mobile phone of Central Control Room staff, thus the real-time monitoring realized temperature of cable junction, be convenient to staff's Timeliness coverage dangerous situation factor, take measures to investigate fault, for the video monitoring of route protection case, what adopt is video monitor, monitoring both can in protection casing, also can with each guard box for initial point, carry out the panoramic range monitoring of circuit, form circuit monitoring network, the multichannel input type video recorder that the video monitor be installed on single guard box comprises thermal infrared imager, visible light camera and is connected with both, thermal infrared imager and visible light camera adopt presetting bit The Cloud Terrace to fix, The Cloud Terrace is arranged at supporting bridge top of the trellis, The Cloud Terrace arranges outer protective cover, and supporting bridge erection is placed in guard box top.Thermal infrared imager coordinates with visible light camera, both are placed on same presetting bit The Cloud Terrace, thermal infrared imager is by the form of infrared radiation signal, be imaged on infrared eye through receiving optics and optical mechaical scanning mechanism, again by detector by signal through prime amplifier with after further amplifying process, have by bright and dark light interference, the visible ability of details.Thermal imaging system normally shows with scenery temperature corresponding to darker gray scale; When contrary display then with the comparatively higher scenery temperature of dark gray correspondence, simultaneously, device does not meet human visual system in view of infrared image, and the supervision object to panorama, by setting up visible light camera, propose the integration technology of visible ray and infrared image, by image registration and data fusion, obtain the composograph paying close attention to content enhancing, the infrared monitoring mode of this composite type, more traditional analog image, the information antijamming capability of its figure pattern is strong, is not subject to the impact of transmission line signals decay and external interference.
The outer protective cover of presetting bit The Cloud Terrace can choose hard tempered glass, prevents interference and the destruction in external interference source, ensures instrument security of operation.Thermal infrared imager can realize not stopping transport, do not contact, carry out imaging to each details of control point quickly and intuitively, and visible light camera realizes the overall view monitoring in guarded region, with thermal infrared imager synchronization monitoring under the control of The Cloud Terrace; Thermal infrared imager and high power zoom visible light camera are arranged on same platform by presetting bit The Cloud Terrace, both the synchronism that two cameras monitor can have been ensured, also the problem that infrared thermal imagery is difficult to identify overall scenario is solved, be convenient to the concrete condition judging control point in time, for accurately judging and taking corresponding measure to strive for the valuable time.Presetting bit The Cloud Terrace is adjustable, can Long-distance Control, the mobile of presetting bit The Cloud Terrace relies on electric rotating machine, motor can be connected with telecommunication devices, mobile steering order according to video monitoring needs, by remote controllers, can input in The Cloud Terrace by staff, thus be convenient to setting and the selection of multiple observation place, be conducive to the conduct monitoring at all levels to entirety.
Video monitor is also connected with alarm, can the mobile object of induction cable guard box periphery automatically, and such as people, animal, bird etc., send alarm signal to control center, also can give the alarm in locality acousto-optic, and record a video to object.Video monitoring system is remote controlled, and heart display in the controlling, or is shown on computers by network in real time, realizes the functions such as antitheft, warning, floor manager.
On the other hand, this device can have a reliable and stable operating power, for monitoring alarm device is powered, because guard box distribution comparatively disperses, cannot concentrate or municipal low-tension supply is provided nearby, simultaneously, the space of guard box is often narrower and small, higher to the volume requirement of power supply; The utility model proposes the capacitive high voltage power taking being applicable to 10KV guard box; core adopts special high-voltage line capacitor directly to get energy from high-voltage conducting wires; insulator chain is in parallel with high-voltage line capacitor as the superpotential insulating supporting of transmission line of electricity, i.e. the 10KV guard box power taking pattern of high-voltage line capacitor step-down-parallel electronic regulator voltage stabilizing-buck DC/DC conversion-heat-explosion type disconnector protection.High-voltage line capacitor wherein adopts the appearance design identical with gapless leakage conductor, the mounting process identical with gapless leakage conductor easy to use, parallel voltage stabilizer will flow through the current bypass ground connection of high-voltage line capacitor, and by voltage stabilization several hectovolt extremely several kilovolts.The voltage transitions of a few hectovolt to several kilovolts is tens volts of voltages (12V or 24V) by buck DC/DC conversion, be transformed into low pressure (12V or 24V) big current (a few peace) by high pressure (a few hectovolt is to several kilovolts) small area analysis (tens milliamperes), finally realize tens watts of power stages to a few hectowatt.
Figure 2 shows that the schematic diagram of this electricity getting system, 10KV guard box capacitance decompression electricity getting system forms primarily of high-voltage line capacitor and power converting circuit, when heat-explosion type disconnector can guarantee high-voltage line capacitor fault and transmission line of electricity depart from, assurance device stable operation; Power converting circuit is primarily of Voltage stabilizing module, buck DC/DC conversion module, voltage compare control module composition.Voltage stabilizing module adopts the mode of bridge rectifier, capacitor filtering and field-effect transistor parallel voltage-stabilizing to carry out voltage stabilizing, and capacitor output AC voltage is stabilized in about 310V; Stabilized circuit outputting voltage is finally converted to 24V DC voltage by buck DC/DC conversion module, is transformed into low-voltage, high-current by high voltage-small current, finally realizes tens watts of power stages to a few hectowatt.Voltage compare control circuit can carry out cut-offfing of pilot relay according to voltage monitor power demand, and then closed or cut-out resistance, and power demand is passed to subsequent conditioning circuit, ensures that circuit long-term stability is run and is operated in low consumption state.For needs DC ice-melting, circuit uncharged situation during ice-melt, supply unit installs batteries to store energy additional, can meet the power requirement of voltage monitor at short notice, realize the uninterrupted power supply of supply unit.
High-voltage line capacitor changes line capacitor output voltage into 220V, special high-voltage line capacitor is in series by the cylindrical film capacitor of DC break down voltage tens of kilovolts, cylindrical film capacitor is equivalent to plate condenser, and the industrial frequency withstand voltage of the Capacitor banks after series connection meets the requirement of line insulation cooperation.Molded with silicon rubber mould after this series capacitor bank insulation tape wound, zinc oxide valve plate cylindrical capacitor is replaced, the diameter of cylindrical capacitor is consistent with the diameter of zinc oxide valve plate, total length after series connection is consistent with the total length that zinc oxide valve plate is connected, the mounting process identical with gapless leakage conductor easy to use.The number of series capacitance and monomer capacity, withstand voltage are comprehensively determined according to total withstand voltage, diameter, total length and thin film capacitor technique for coiling, and electric capacity two electrodes are drawn with male and female screw thread respectively.
The high voltage-small current exported to high-voltage line capacitor be got source converts the low-voltage, high-current that monitoring equipment can use to, as DC24V, 3A, the utility model is provided with power converting circuit, its front end is Voltage stabilizing module, and object is that the output AC voltage obtained from the high-tension line source of getting is stabilized in a certain value.
Traditional Voltage stabilizing module is made up of power transformer, rectification circuit, filtering circuit, and the design carries out the parallel electronic regulation circuit of Curve guide impeller on the basis of existing Voltage stabilizing module.Parallel electronic regulation circuit adopts input end series connection, the cascade system of output terminal parallel connection.Rectification circuit adopts bridge rectifier structure, alternating voltage is changed into the DC voltage of pulsation, filtering circuit is made up of reactance component, filtering is carried out by the mode of shunt capacitance in circuit, the DC voltage of pulsation is become the DC voltage that fluctuation is little, smoothness is high, output terminal adopts the mode voltage stabilizing of 23N50 type MOSFET pipe parallel connection, and emphasis devises the driving circuit of MOSFET pipe.Be illustrated in figure 3 the concrete structure of rectification filtering voltage stabilizing circuit.
CON2 is wherein that 220V exchanges, C22 and T2 carries out filtering, alternating voltage is changed into DC voltage after bridge rectifier circuit, utilize R1, R30 and R28 resistant series carries out dividing potential drop, get the voltage of first node as LM358 voltage comparator input voltage, the voltage stabilization held by NULL by 5.1V stabilivolt resistance in series is at 5.1V, LM358 voltage comparator exports the voltage following by inputting voltages device of positive-negative polarity, voltage follower plays the effect of isolation, 7 ends export the MOSFET pipe that the voltage of same polarity is parallel connection and provide driving voltage, R5 and R6 drives resistance, R48 can discharge the residual voltage of MOSFET tube grid, prevent the situation that MOSFET pipe misleads.C1 is electrochemical capacitor, carries out low frequency filtering and compensation; C7 is conventional capacitive, is used for eliminating high frequency waves and clutter.V1 and VNULL is compared by voltage comparator, the magnitude of voltage of V1 can change according to the change of front-end circuit, very unstable, but fluctuate near 5.1V always, the signal positive-negative polarity that 7 ends can be caused like this to export converts back and forth, if the rising of front voltage causes the voltage of V1 to be greater than 5.1V, at this moment by output cathode voltage, metal-oxide-semiconductor conducting under the effect of this voltage, the on-off action of metal-oxide-semiconductor is utilized to carry out the voltage of stable drain electrode end, by the among a small circle fluctuation of Control of Voltage at 310V, vice versa.
The DC voltage that the alternating voltage that high-voltage line capacitor obtains from high-voltage conducting wires obtains after overcommutation, filtering, voltage stabilizing process needs power conversion module through the input of wide region, doubleway output to obtain stable 12V or 24V output voltage, to meet the energy supply demand of equipment.Therefore, the utility model has selected model to be the switch power module of HN25-150D-C1.The built-in superpower filtering magnet ring electric capacity of this module, output voltage is 12V, 24V, and output current is 5A, 3A, and working relative humidity is low, and antijamming capability is strong, and peripheral circuit is fairly simple, and volume is little, is more convenient for installing and using.
In order to meet the power demand of voltage monitor and protect DC/DC conversion module, the utility model devises voltage compare control circuit, and voltage compare control circuit is formed primarily of amplifying circuit, voltage comparator circuit and relay drive circuit.Its core devices is relay, and circuit can carry out cut-offfing of pilot relay according to voltage monitor power demand, and then closed or cut-out front end resistance, power demand is passed to subsequent conditioning circuit, ensures that circuit long-term stability is run and is operated in low consumption state.Fig. 4 is the amplifying circuit in voltage compare control circuit.Adopt two-stage calculation amplifier that R8 both end voltage is amplified 100 times, the final maximum voltage exported is 11V.The change of VG terminal voltage changes because monitoring equipment power demand changes.Fig. 5 is voltage comparator circuit, and VG end is the output terminal of amplifying circuit, and maximum voltage is 11V, the voltage of voltage comparator LM339 negative input end is followed successively by 8V, 6V, 4V from top to bottom, 2V, the size voltage comparator LM339 according to VG terminal voltage sends high level and low level signal.Resistance R61, R62, R63, R64 are used for the retardation reaction time, and the output end signal preventing voltage comparator positive input terminal change in voltage from causing overturns back and forth and voltage comparator is damaged; Fig. 6 is the relay drive circuit of voltage monitor, core devices is ULN2003A chip, ULN2003A can see a phase inverter as, polarity of voltage is overturn, carrys out the closed of pilot relay, and then controlling resistance R14, R15, the access of R16, R17, what meet on-line monitoring takes power.High-voltage line capacitor is connected with lightning arrester, impacts for preventing the superpotential such as thunder and lightning.
Claims (8)
1.10KV cable line joint monitoring alarm device, is arranged in the guard box of cable line joint, it is characterized in that: the monitoring alarm device comprising supply unit and be connected with described supply unit; Described monitoring alarm device comprises watch-dog, temperature sensor and alarm, and described alarm comprises audible-visual annunciator and telecommunication devices, and the probe of described temperature sensor contacts with the cable end in guard box; Described supply unit is capacitor voltage-dropping power supply device, comprises high-voltage line capacitor and power converting circuit.
2. 10KV cable line joint monitoring alarm device as claimed in claim 1, is characterized in that: described high-voltage line capacitor is connected with 10KV high-voltage conducting wires by heat-explosion type disconnector.
3. 10KV cable line joint monitoring alarm device as claimed in claim 1, is characterized in that: described power converting circuit is connected with high-voltage line capacitor, comprises Voltage stabilizing module, buck DC/DC conversion module and voltage compare control module.
4. 10KV cable line joint monitoring alarm device as claimed in claim 3, is characterized in that: described Voltage stabilizing module is parallel electronic regulation circuit, comprises bridge rectifier circuit, capacitor filter and field-effect transistor shunt regulating circuit; Described voltage compare control module comprises two-stage amplifying circuit, and connects voltage monitor.
5. 10KV cable line joint monitoring alarm device as claimed in claim 1, is characterized in that: described high-voltage line capacitor is connected with lightning arrester.
6. 10KV cable line joint monitoring alarm device as claimed in claim 1, is characterized in that: described telecommunication devices comprises wireless launcher.
7. 10KV cable line joint monitoring alarm device as claimed in claim 1, is characterized in that: described watch-dog is video monitoring apparatus, the multichannel input type video recorder comprising thermal infrared imager, visible light camera and be connected with both.
8. 10KV cable line joint monitoring alarm device as claimed in claim 7; it is characterized in that: described thermal infrared imager and described visible light camera adopt presetting bit The Cloud Terrace to fix; guard box top arranges support crane span structure; The Cloud Terrace is arranged at described supporting bridge top of the trellis, and The Cloud Terrace periphery arranges protective cover.
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| CN201520446774.7U CN204705416U (en) | 2015-06-26 | 2015-06-26 | 10kv cable line joint monitoring alarm device |
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| CN105371957A (en) * | 2015-10-23 | 2016-03-02 | 国家电网公司 | Transformer station equipment infrared temperature registration positioning and method |
| CN108846418A (en) * | 2018-05-24 | 2018-11-20 | 广东电网有限责任公司 | A kind of positioning of cable machinery temperature anomaly and recognition methods |
| CN109147268A (en) * | 2018-10-30 | 2019-01-04 | 国网江苏省电力有限公司南通供电分公司 | A kind of anti-flaming alarm detection system of power cable connector |
| CN109579914A (en) * | 2018-12-24 | 2019-04-05 | 国网山西省电力公司检修分公司 | A kind of operation conditions determination method, device, equipment and the medium of transmission line of electricity |
| CN109632105A (en) * | 2018-12-24 | 2019-04-16 | 国网山西省电力公司检修分公司 | A kind of state prompt method, device, equipment and the storage medium of wire-connection point |
| CN109682481A (en) * | 2019-03-01 | 2019-04-26 | 北京中恒欧嘉节能环保科技有限公司 | A kind of monitoring device and analysis system based on infrared thermal imaging technique |
| CN109818325A (en) * | 2019-03-30 | 2019-05-28 | 国网福建省电力有限公司厦门供电公司 | A kind of bypass cable transition joint guard box |
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2015
- 2015-06-26 CN CN201520446774.7U patent/CN204705416U/en not_active Expired - Fee Related
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| CN105371957A (en) * | 2015-10-23 | 2016-03-02 | 国家电网公司 | Transformer station equipment infrared temperature registration positioning and method |
| CN108846418A (en) * | 2018-05-24 | 2018-11-20 | 广东电网有限责任公司 | A kind of positioning of cable machinery temperature anomaly and recognition methods |
| CN109147268A (en) * | 2018-10-30 | 2019-01-04 | 国网江苏省电力有限公司南通供电分公司 | A kind of anti-flaming alarm detection system of power cable connector |
| CN109579914A (en) * | 2018-12-24 | 2019-04-05 | 国网山西省电力公司检修分公司 | A kind of operation conditions determination method, device, equipment and the medium of transmission line of electricity |
| CN109632105A (en) * | 2018-12-24 | 2019-04-16 | 国网山西省电力公司检修分公司 | A kind of state prompt method, device, equipment and the storage medium of wire-connection point |
| CN109682481A (en) * | 2019-03-01 | 2019-04-26 | 北京中恒欧嘉节能环保科技有限公司 | A kind of monitoring device and analysis system based on infrared thermal imaging technique |
| CN109818325A (en) * | 2019-03-30 | 2019-05-28 | 国网福建省电力有限公司厦门供电公司 | A kind of bypass cable transition joint guard box |
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