CN203595776U - Lightning stroke fault protection and monitoring system - Google Patents
Lightning stroke fault protection and monitoring system Download PDFInfo
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- CN203595776U CN203595776U CN201320620133.XU CN201320620133U CN203595776U CN 203595776 U CN203595776 U CN 203595776U CN 201320620133 U CN201320620133 U CN 201320620133U CN 203595776 U CN203595776 U CN 203595776U
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- 208000025274 Lightning injury Diseases 0.000 title claims abstract description 17
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- 238000002955 isolation Methods 0.000 claims description 17
- 238000004891 communication Methods 0.000 claims description 16
- 238000012545 processing Methods 0.000 claims description 15
- 238000007599 discharging Methods 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010891 electric arc Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
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- 229910000838 Al alloy Inorganic materials 0.000 description 1
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- 230000002421 anti-septic effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
Abstract
The utility model discloses a lightning stroke fault protection and monitoring system used for a high voltage distribution line system. The high voltage distribution line system comprises a main line, a branch line, a first distribution tower used for the installation of the main line, and a second distribution tower used for the installation of the branch line. The lightning stroke fault protection and monitoring system comprises a lightning stroke protector fixedly disposed on the first distribution tower; a fault isolator and a monitoring device, which are fixedly disposed on the second distribution tower, and are respectively connected with the branch line. The lightning stroke fault protection and monitoring system is advantageous in that the lightning stroke line breaking accident can be prevented effectively, the rate of the trip-out of the line caused by the lightning stroke can be reduced, the power supply reliability can be improved; and at the same time, the disconnected branch line can be monitored, and therefore the quick positioning of the occurrence points of the faults can be facilitated.
Description
Technical field
The utility model relates to a kind of lightning fault protection and monitoring system, belongs to technical field of power systems.
Background technology
That distribution line distributes is wide, quantity is many, dielectric level is low, is to subject to the surface facility that is struck by lightning most, although taked now multiple shocking preventing technology measure, the line tripping causing due to thunderbolt still occupy the first place of all kinds of trip reasons.The main cause that causes broken string is on lightning stroke flashover passage, to build arc to form power frequency continued flow, and the temperature of arc root is very high, can at short notice wire be blown, even bare conductor, if the electric current passing through is very large, also wire can be blown, cause the accidents such as tripping operation power failure.Meanwhile, for the location of line fault, mostly still take the mode of line walking to determine at present.But because regional environment is special, transmission line of electricity disconnects because break down, and is difficult to find exactly in the short period of time trouble spot.
Utility model content
The purpose of this utility model is the deficiency in order to overcome above-mentioned background technology, a kind of lightning fault protection and monitoring system are provided, this system can effectively prevent lightning-caused breaking accident, reduce the tripping rate with lightning strike of circuit, improve the reliability of power supply, can also monitor the branched line disconnecting simultaneously, facilitate staff to locate rapidly fault origination point.
The technical scheme that the utility model solves its technical matters employing is, a kind of lightning fault protection and monitoring system are provided, for high-tension distributing line system, described high-tension distributing line system comprises basic routing line and the branched line being connected with described basic routing line, and for the first distribution shaft tower of described basic routing line being installed and for the second distribution shaft tower of described branched line is installed; Described lightning fault protection and monitoring system comprise the lightning Protection device being fixed on described the first distribution shaft tower, and the fault isolation device and the monitoring device that are fixed on described the second distribution shaft tower and are connected with described branched line respectively; Described lightning Protection device is used for preventing that excess current from appearring in described basic routing line, described fault isolation device is for disconnect being connected of described branched line and described basic routing line in the time that excess current appears in described branched line, and described monitoring device is for monitoring the fault of described branched line overcurrent disconnection.
In lightning fault protection described in the utility model and monitoring system, described fault isolation device is Electronic Control intelligence sectionaliser.
In lightning fault protection described in the utility model and monitoring system, described monitoring device comprises the fault disconnecting for monitoring branched line overcurrent, and the fault obtaining according to monitoring produces the monitoring means of corresponding electric signal, is connected with described monitoring means, for described electric signal is converted to the signal processing unit of digital signal, is connected with described signal processing unit, for forwarding described digital signal signal to the communication unit of background monitoring server and the power supply unit being connected with described monitoring means, signal processing unit, communication unit respectively; Described monitoring means comprises the current sensor for monitoring described branched line current situation.
In lightning fault protection described in the utility model and monitoring system, described lightning Protection device comprises for described lightning Protection device being arranged on to support member on described the first distribution shaft tower, for preventing Lightning Over-voltage and blocking the lightning Protection device body of power frequency continued flow, the end of described lightning Protection device body be connected with described support member, be connected with the high-pressure side of described lightning Protection device body for the arc electrode of lightning stroke flashover passage is provided.
In lightning fault protection described in the utility model and monitoring system, described lightning Protection device body is lightning stroke flashover protector.
In lightning fault protection described in the utility model and monitoring system, described basic routing line comprises the trunk cable for main electric power dispensing, described branched line comprises with described trunk cable and being connected for the breakout cable of regional power supply, described arc electrode is fixed on the high-pressure side of described lightning Protection device body, described arc electrode is circular arc towards the end face of described trunk cable, and forms the first discharging gap between the end face of described circular arc and described trunk cable.
In lightning fault protection described in the utility model and monitoring system, described lightning Protection device also comprises two ball discharges that are connected with described lightning Protection device body, described two ball discharge intervals are fixed on the lateral wall of described lightning Protection device body, and form the second discharging gap between described two ball discharges.
Therefore, the utility model can obtain following beneficial effect: lightning Protection device is arranged on basic routing line, directly contacts with transmission pressure, can effectively prevent Lightning Over-voltage and block power frequency continued flow; Fault isolation device is arranged on branched line, and when branched line is because thunderbolt or other reason are while being short-circuited fault, fault isolation device disconnects circuit, by branched line automatic fault isolation; By monitoring device is installed on branched line, in the time that branched line occurs that overcurrent condition fault isolation device disconnects being connected of branched line and basic routing line, monitoring device can help maintainer to locate fast the branched line breaking down.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the lightning fault protection of an embodiment of the utility model and the structural representation of monitoring system;
Fig. 2 is the structural representation of the lightning fault protection of an embodiment of the utility model and the monitoring device of monitoring system.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Fig. 1 is the lightning fault protection of an embodiment of the utility model and the structural representation of monitoring system.As shown in Figure 1, lightning fault protection and monitoring system are for high-tension distributing line system, the branched line that high-tension distributing line system comprises basic routing line, be connected with basic routing line and be respectively used to install the first distribution shaft tower of basic routing line, for the second distribution shaft tower of branched line is installed, basic routing line comprises that branched line comprises with described trunk cable and being connected for the breakout cable of regional power supply for the trunk cable of main electric power dispensing.The fault isolation device 2 and the monitoring device 3 that on lightning fault protection and monitoring system comprise the lightning Protection device 1 that is arranged on the first distribution shaft tower and be arranged on the second distribution shaft tower, are connected respectively with branched line.
The high-tension distributing line system that comprises above-mentioned lightning fault protection and monitoring system in the present embodiment comprises multiple the first distribution shaft towers and multiple the second distribution shaft tower, on each the first distribution shaft tower, a lightning Protection device 1 is installed, a fault isolation device 2 and a monitoring device 3 are installed on each the second distribution shaft tower, and fault isolation device 2 is connected with the cable on branched line respectively with monitoring device 3.
Lightning Protection device 1 causes damage for preventing basic routing line because there is overcurrent.Lightning Protection device 1 comprises a support member, for supporting fixing lightning stroke flashover protector, is suitable for on-the-spot installation, has height adjusting function, and through antiseptic and rustproof processing; Also comprise a lightning stroke flashover protector body simultaneously, adopt 10KV lightning stroke flashover protector, this protector is used for preventing lightning surge and blocks power frequency continued flow; Also comprise an arc electrode, arc electrode is circular arc towards the end face of trunk cable, adopt aluminum alloy material, the end face of arc electrode and cable adopt the structure of cambered surface to wire, guarantee also can make the gap between cable and arc electrode in the situation that cable swings too large variation can not occur, guarantee the stability of lightning Protection device work.
In the process using at lightning Protection device, its on-the-spot installation should adopt natural grounding, need not install ground wire additional; The high-pressure side of lightning Protection device and support member should guarantee enough safe distances; Arc electrode need have enough thickness and volume, stands repeatedly burning of power frequency arc, even if scaling loss also can freely be changed; The distance of lightning Protection device and wire can up-down adjustment; For lightning Protection device is failure to actuate when the switching overvoltage, extend lightning stroke flashover protector serviceable life, should adopt two-stage tandem discharging gap.Arc electrode forms the first order discharging gap that is about 18-20mm between wire and lightning Protection device, and lightning stroke flashover protector body forms the second level discharging gap of 8-12mm by ball discharge.
Fault isolation device 2 is for disconnect being connected of branched line and basic routing line in the time that overcurrent appears in branched line, to avoid the fault effects of branched line to basic routing line.Fault isolation device 2 is Electronic Control intelligence sectionaliser.Sectionaliser is a kind of High-Voltage Electrical Appliances of single-phase or three-phase, comprises by insulator, contact, conductive mechanism and forms the conducting system for the first time that insulate; Form secondary control system by current transformer, microcomputer controller; Form dropout part by tripping mechanism; Mechanical linkage part after forming sectionaliser two-phase and fall by phase countershaft, interlinked mechanism.There are single-phase and two kinds of structures of three-phase, can need to realize three-phase interlock according to user.
Before sectionaliser puts into operation, need to operate trip dog tripping mechanism is resetted, then rotation trip dog closes a floodgate the reset of button spring.Sectionaliser is equipped with the current transformer that detects loop current value, and in the time of line failure, microcomputer controller starts in the time that electric current reaches specified starting current, carries out inter-process.Fault current is cut-off by higher level's automatic circuit (or isolating switch), microcomputer controller can be remembered higher level's switch and cut-off the action frequency of fault current, and for example, in the time reaching the counts of adjusting (1,2,3 time), separating brake isolated fault section after higher level's switch cut-offs fault current, make automatic circuit (or isolating switch) successful reclosing, recover non-fault line powering.When sectionaliser, wherein two-phase is because of fault separating brake, and the mechanical linkage of two-phase separating brake moment makes not separating brake phase separating brake.
Electronic Control intelligence sectionaliser is to cut-off circuit under no current, there will not be electric arc while cut-offfing, and upper contact head disjunction place also can not occur scaling loss because of electric arc.In the earth-free distribution system of central point, only may there is the fault of three-phase and two-phase short circuit, at this moment two sectionalisers in the two-phase of three sectionalisers in three-phase or the fault that is short-circuited move respectively isolated fault, and transformer and other electric equipment there will not be few phase ruuning situation.Therefore the single-phase sectionaliser of phase-splitting action can meet the requirement of power distribution system secure operation completely.
Sectionaliser adopts after electronic control circuit, do not need a deciliter multi-pass operations for sectionaliser to carry out trouble-shooting point, thereby fall type subsector is without the need for Automatic-closing circuit or close the ability of short-circuit current, the i.e. operating mechanism of Structure of need complexity not, do not need the powerful divide-shut brake energy, in other words do not need high-power external voltage mutual inductor, current transformer to discharge huge operating physical force and make the action of fall type subsector separating brake yet.Simultaneously, electronic control circuit is in noble potential place, sensor is also in noble potential place, it can measure electric current, voltage, can provide again electronic control circuit required power supply, saved the high-voltage power supply transformer in conventional sectionaliser, this sensor can adapt to the different current settings in specialized range.Sectionaliser coordinates higher level's isolating switch (or automatic circuit) can differentiate the character of fault (permanent or transient fault) by changing counts, send trip signal according to the result electronic control circuit of judgement, permanent magnet mechanism can promote sectionaliser separating brake within the utmost point short time, has saved conventional sectionaliser complex mechanism and control box.And this kind of automatic circuit sectionaliser is easy for installation, flexible structure, simple, easy to operate, safe and reliable.
After the branched line that fault isolation device 2 is controlled disconnects, current sensor in monitoring device 3 is by the fault that detects that respective branch circuit disconnects, and be forwarded to corresponding background server by the communication unit in monitoring device after Electric signal processing packing corresponding failure being produced by signal processing unit, background server, to the data analysis processing of collecting, is the branched line generation open failure which root distribution shaft tower is corresponding thereby can accurately judge.
Fig. 2 is the structural representation of the lightning fault protection of an embodiment of the utility model and the monitoring device 3 of monitoring system.As shown in Figure 2, monitoring device 3 comprises for detection of branched line fault, and according to the fault monitoring produce the monitoring means 31 of corresponding electric signal, the electric signal for described monitoring means 31 is produced that is connected with detecting unit converts the signal processing unit 32 of digital signal to, be connected with described signal processing unit 32 for forwarding the communication unit 33 of digital signal to background server, monitoring device 3 also comprise be connected with monitoring means 31, signal processing unit 32, communication unit 33 respectively for it is carried out to power supply unit 34.Monitoring means 31 comprises a current sensor 311, in the time that branched line occurs that overcurrent condition fault isolation device 2 disconnects branched line with being connected of basic routing line, current sensor 311 will detect the variation that electric current now occurs (be embodied in because of branched line with basic routing line disconnection no current by monitoring device 3) and produce corresponding simulating signal, signal processing unit 32 carries out this simulating signal to be converted to digital signal after amplification filtering, and this digital signal and monitoring means relevant location information are packaged as to the packet that can carry out wireless transmission, relevant positional information is the corresponding distribution shaft tower of this monitoring device and this residing geographic position of distribution shaft tower.And then by communication unit 33, corresponding packet is sent to background server by wireless network, background server utilizes relative computer software to carry out analyzing and processing to the packet receiving, can navigate to rapidly and accurately branched line and this corresponding position of installation branched line shaft tower that disconnection occurs, thereby make corresponding maintainer can carry out quickly and easily maintenance work to scene, improve power supply reliability, reduced maintenance cost.
In monitoring device in the present embodiment, the communication unit in each monitoring device can directly be connected with background server by wireless network with the communication unit in other monitoring device, also can with interconnect by wireless network.Multiple monitoring devices on multiple like this shaft towers transmit use by communication unit successively, at certain communication unit because when distant signal is weak or other reason fails to connect with background server, can by by package forward to the communication unit on the shaft tower of adjacent position, be connected with server by the communication unit on the shaft tower of adjacent position again or continue to be forwarded to next adjacent communication unit, thereby realize more remote communication, guaranteed whole distribution line system reliability of operation.
By reference to the accompanying drawings embodiment of the present utility model is described above; but the utility model is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; rather than restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; not departing from the scope situation that the utility model aim and claim protect, also can make a lot of forms, within these all belong to protection of the present utility model.
Claims (7)
1. a lightning fault protects and monitoring system, for high-tension distributing line system, described high-tension distributing line system comprises basic routing line and the branched line being connected with described basic routing line, and for the first distribution shaft tower of described basic routing line being installed and for the second distribution shaft tower of described branched line is installed; It is characterized in that, described lightning fault protection and monitoring system comprise the lightning Protection device (1) being fixed on described the first distribution shaft tower, and the fault isolation device (2) and the monitoring device (3) that are fixed on described the second distribution shaft tower and are connected with described branched line respectively; There is excess current for preventing described basic routing line in described lightning Protection device (1), described fault isolation device (2) for disconnecting being connected of described branched line and described basic routing line, the fault that described monitoring device (3) disconnects for monitoring described branched line overcurrent in the time that excess current appears in described branched line.
2. lightning fault protection as claimed in claim 1 and monitoring system, is characterized in that, described fault isolation device (2) is Electronic Control intelligence sectionaliser.
3. lightning fault protection as claimed in claim 1 and monitoring system, it is characterized in that, described monitoring device (3) comprises the fault disconnecting for monitoring branched line overcurrent, and the fault obtaining according to monitoring produces the monitoring means (31) of corresponding electric signal, be connected with described monitoring means (31), for described electric signal being converted to the signal processing unit (32) of digital signal, be connected with described signal processing unit (32), for forwarding the communication unit (332) of described digital signal signal to background monitoring server, and respectively with described monitoring means (31), signal processing unit (32), the power supply unit (34) that communication unit (33) connects, described monitoring means (31) comprises the current sensor (312) for monitoring described branched line current situation.
4. lightning fault protection as claimed in claim 1 and monitoring system, it is characterized in that, described lightning Protection device (1) comprises for described lightning Protection device (1) being arranged on to support member (11) on described the first distribution shaft tower, for preventing Lightning Over-voltage and blocking the lightning Protection device body (12) of power frequency continued flow, the end of described lightning Protection device body (12) be connected with described support member (11), be connected with the high-pressure side of described lightning Protection device body (12) for the arc electrode (13) of lightning stroke flashover passage is provided.
5. lightning fault protection as claimed in claim 4 and monitoring system, is characterized in that, described lightning Protection device body (12) is lightning stroke flashover protector.
6. lightning fault protection as claimed in claim 4 and monitoring system, it is characterized in that, described basic routing line comprises the trunk cable for main electric power dispensing, described branched line comprises with described trunk cable and being connected for the breakout cable of regional power supply, described arc electrode (13) is fixed on the high-pressure side of described lightning Protection device body (12), described arc electrode (13) is circular arc towards the end face of described trunk cable, and forms the first discharging gap between the end face of described circular arc and described trunk cable.
7. lightning fault protection as claimed in claim 4 and monitoring system, it is characterized in that, described lightning Protection device (1) also comprises two ball discharges (14) that are connected with described lightning Protection device body (12), described two ball discharges (14) interval is fixed on the lateral wall of described lightning Protection device body (12), and forms the second discharging gap between described two ball discharges (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320620133.XU CN203595776U (en) | 2013-10-09 | 2013-10-09 | Lightning stroke fault protection and monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320620133.XU CN203595776U (en) | 2013-10-09 | 2013-10-09 | Lightning stroke fault protection and monitoring system |
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| CN203595776U true CN203595776U (en) | 2014-05-14 |
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| CN201320620133.XU Expired - Lifetime CN203595776U (en) | 2013-10-09 | 2013-10-09 | Lightning stroke fault protection and monitoring system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107966634A (en) * | 2017-12-19 | 2018-04-27 | 广东电网有限责任公司韶关供电局 | A kind of line fault point positioning system and its localization method |
| CN107996010A (en) * | 2015-06-22 | 2018-05-04 | 泰科电子瑞侃有限责任公司 | The field control element of high-tension cable accessory and the method for optical measurement shelf depreciation |
-
2013
- 2013-10-09 CN CN201320620133.XU patent/CN203595776U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107996010A (en) * | 2015-06-22 | 2018-05-04 | 泰科电子瑞侃有限责任公司 | The field control element of high-tension cable accessory and the method for optical measurement shelf depreciation |
| CN107966634A (en) * | 2017-12-19 | 2018-04-27 | 广东电网有限责任公司韶关供电局 | A kind of line fault point positioning system and its localization method |
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