CN103730885A - Power distribution device, protective system, mining power monitoring system and protection method - Google Patents
Power distribution device, protective system, mining power monitoring system and protection method Download PDFInfo
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- CN103730885A CN103730885A CN201410034807.7A CN201410034807A CN103730885A CN 103730885 A CN103730885 A CN 103730885A CN 201410034807 A CN201410034807 A CN 201410034807A CN 103730885 A CN103730885 A CN 103730885A
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- 230000001012 protector Effects 0.000 claims abstract description 54
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- 238000012360 testing method Methods 0.000 claims description 27
- 239000000835 fiber Substances 0.000 claims description 25
- 239000013307 optical fiber Substances 0.000 claims description 22
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- 239000002131 composite material Substances 0.000 claims description 10
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- 238000003869 coulometry Methods 0.000 claims description 4
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Abstract
The invention discloses a power distribution device. When a short-circuit fault occurs in a line, protectors in the power distribution device on the upper side and the lower side of a fault point find that difference current is out of limit through mutual information send a short-circuit fault tripping signal and control tripping of a switch in the power distribution device to cut off the fault line. The protectors in the power distribution device with high matched gene mapping ID priority in line send fault information to the background. The decision-making right is issued to each power distribution device to enable the protection reliability to be improved greatly, only one or more power distribution devices with high matched gene mapping ID priority occupy the network at the fault occurrence moment according to the gene mapping ID priority level, communication data are greatly decreased, the communication fault possibility is reduced, the problem that communication faults in the prior art enable front-stage and back-stage locking not to be protected is solved, and override tripping of the power distribution device is fundamentally and completely eradicated by using the gene mapping ID priority level as a protection action sequence.
Description
Technical field
The present invention relates to power supply technique field, colliery, relate in particular to a kind of power distribution equipment, protection system, mining electric power monitoring system and guard method.
Background technology
In Coal Mine Power Distribution System, from ground transformer substation to down-hole central substation, and between each working face working section sub station, mostly adopt longitudinally, multi-layer, short distance vertical supply pattern.But the circuit of this powering mode distance is short, sectional area is large, makes every section of cable resistance little, and short circuit current is large, and every grade of supply network head and end short circuit current is more or less the same; And condition of power supply is severe under coal mine, humid environment, disturbs morely, and often short trouble appears in a place, and multiple-pole switch is overstep tripping simultaneously, and then causes down-hole large-area power-cuts, has a strong impact on the safety in production of mine.
For avoiding occurring overstep tripping accident; the domestic overcurrent protection technology that has occurred the vertical on line road chain type based on communication network mode before and after 06 year; the overcurrent protection of circuit panel switches at different levels in vertical on line road; through communication transmission passage, form a system, form an organic overcurrent protection chain.The basic function that each panel switches in overcurrent protection chain should complete is: the overcurrent condition that detects circuit at the corresponding levels; Transmit testing result at the corresponding levels to upper level switch; Receive the testing result of next stage switch; According to the testing result of testing result at the corresponding levels and next stage, determine whether switch at the corresponding levels trips.The signal intelligence of the real-time monitoring communications passage of each panel switches in chain type overcurrent protection, and can be when makeing mistakes and alarm, the mistake action and rejecting action of protection while avoiding communication to make mistakes.For communication, make mistakes, adopted the scheme of backup protection, solved when communicating by letter and made mistakes, rear class switch is the situation because of locking effect tripping to prime switch.
But this scheme is when communication failure, the protection of whole system is failure to actuate because of the reason of front and back level locking, makes described system lose protection, need to adopt the redundant measure of backup protection, makes the time lengthening of tripping operation excision fault.
Summary of the invention
In view of this, the invention provides a kind of power distribution equipment, protection system, mining electric power monitoring system and guard method, to solve prior art, when solving overstep tripping problem, because communication failure causes front and back level locking, lose the problem of protection situation.
To achieve these goals, the existing scheme proposing is as follows:
A power distribution equipment, is applied to mining electric power monitoring system, is connected in the circuit being connected with backstage, comprising:
Be assigned the protector of No. ID, the genome that represents power distribution equipment priority described in each, for when there is short trouble in described circuit, protector in the power distribution equipment of upper and lower both sides, fault point sends short trouble trip signal after finding that by interactive information poor stream is out-of-limit; The protector of joining in described circuit in the described power distribution equipment that genome ID priority is high sends fault message to described backstage simultaneously; Wherein, higher the closer to the priority of the described power distribution equipment of supply network end;
The switch being connected with described protector, for the excision faulty line that trips according to described short trouble trip signal.
A protection system, is applied to mining electric power monitoring system, comprising:
A plurality of power distribution equipments as described above;
Backstage, for receiving described fault message.
Preferably, described power distribution equipment is connected in described circuit by optoelectronic composite cable; Wherein, described optoelectronic composite cable is: optical fiber embeds in cable, and enters power distribution equipment wire connection cavity by described cable entry, then through die-casting integral wall penetration optical fibers sleeve pipe, accesses the optoelectronic composite cable of protector fiber port.
Preferably, the protector in described power distribution equipment also for: send at regular intervals test data to described backstage, when surpassing Preset Time and fail to send described test data, send fault message report to described backstage;
Described backstage also for: receive the report of described test data and fault message.
Preferably, described protector and switch adopt industrial optical fiber Ethernet to carry out transfer of data.
Preferably, the protector in described power distribution equipment also for: send various information about power;
Described backstage also for: receive described various information about power, to described power distribution equipment monitor, analysis, harmonic analysis, coulometric analysis, tracing analysis, and accident analysis.
A mining electric power monitoring system, comprising:
By interconnective each electric substation of optical fiber;
By optical fiber and the interconnective fiber optic Ethernet ring of ring exchanger;
The ground monitoring center being connected with described fiber optic Ethernet ring;
Wherein, described each electric substation comprises: above-mentioned any described a kind of protection system;
Described each electric substation comprises respectively: the communication bus of Yu Ge electric substation is connected respectively the first optic fiber converter and the second optic fiber converter; The other end of described the first optic fiber converter and the second optic fiber converter is connected with described optical fiber respectively.
A kind of guard method, be applied to mining electric power monitoring system, described mining electric power monitoring system electric substation comprises backstage and is assigned and represent No. ID, the genome of each power distribution equipment priority and be connected in the described power distribution equipment in circuit, and higher the closer to the priority of the described power distribution equipment of supply network end; Described guard method comprises:
While there is short trouble in described circuit, after the power distribution equipment of upper and lower both sides, fault point finds that by interactive information poor stream is out-of-limit, excision faulty line trips; In described circuit, join the described power distribution equipment that genome ID priority is high and send fault message to described backstage simultaneously;
Described backstage receives described fault message.
Preferably, also comprise:
The described cubicle regular hour sends test data to described backstage, when failing to send described test data over Preset Time, sends fault message report to described backstage;
Described backstage receives described test data and fault message report.
Preferably, described power distribution equipment comprises: be assigned the protector of No. ID, the genome that represents power distribution equipment priority described in each, and the switch being connected with described protector; Described while there is short trouble in described circuit, after the power distribution equipment of upper and lower both sides, fault point finds that by interactive information poor stream is out-of-limit, the step of excising faulty line that trip comprises:
While there is short trouble in described circuit, the described protector in the described power distribution equipment of upper and lower both sides, described fault point sends short trouble trip signal after finding that by interactive information poor stream is out-of-limit;
Described switch in the described power distribution equipment of upper and lower both sides, described fault point receives described short trouble trip signal, and excision faulty line trips.
From above-mentioned technical scheme, can find out, power distribution equipment disclosed by the invention, while there is short circuit in circuit, after protector in the power distribution equipment of upper and lower both sides, fault point finds that by interactive information poor stream is out-of-limit, send short trouble trip signal, the switch of controlling in power distribution equipment trips, excision faulty line, the protector of joining in described circuit in the described power distribution equipment that genome ID priority is high sends fault message to described backstage simultaneously, protection system disclosed by the invention, each power distribution equipment is protected location independently, by decentralization of decision making to each power distribution equipment, the reliability of protection is greatly improved, and according to the ID priority level of described genome, can make the moment of breaking down, only have the high power distribution equipment of ID priority of genome described in one or several to take network, communication data greatly reduces, avoided the competition of the communication resource, the judgement time of system is shortened dramatically, avoided because communication failure causes front and back level locking, losing the generation of protection situation in prior art simultaneously, the priority level of No. ID, genome of take is fundamentally stopped the problem of power distribution equipment overstep tripping as carrying out the order of protection action, reduce the down-hole generation of power outage on a large scale, guarantee the safe operation of mine power supply system.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the disclosed protection system schematic diagram of the embodiment of the present invention;
Fig. 2 is the disclosed protection system schematic diagram of another embodiment of the present invention;
Fig. 3 is the disclosed mining electric power monitoring system schematic diagram of another embodiment of the present invention;
Fig. 4 is the disclosed guard method flow chart of another embodiment of the present invention;
Fig. 5 is the disclosed guard method flow chart of another embodiment of the present invention;
Fig. 6 is the disclosed guard method flow chart of another embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
The invention provides a kind of power distribution equipment, be applied to mining electric power monitoring system, be connected in the circuit being connected with backstage, to solve prior art in the problem of the time lengthening of communication failure time tripping operation excision fault.
Concrete, comprising:
Be assigned the protector of No. ID, the genome that represents power distribution equipment priority described in each; Wherein, higher the closer to the priority of the described power distribution equipment of supply network end;
The switch being connected with described protector.
Concrete operation principle is:
While there is short trouble in described circuit, the protector in the power distribution equipment of upper and lower both sides, fault point sends short trouble trip signal after finding that by interactive information poor stream is out-of-limit, and the switch of controlling in power distribution equipment trips, excision faulty line; The protector of joining in described circuit in the described power distribution equipment that genome ID priority is high sends fault message to described backstage simultaneously.
Figure 1 shows that example describes, each power distribution equipment is a node in whole communication network, according to the priority of the described power distribution equipment the closer to supply network end is higher, determine No. ID, the genome that represents each power distribution equipment priority, and each genome ID correspondence is dispensed in the protector of each power distribution equipment, protector in every like this station power distribution device can be known for No. ID from the inheritance in topological structure according to the genome that is dispensed to self, break down Anywhere guaranteeing, the protector of corresponding power distribution equipment can preferentially take communication network and carry out communication, in Fig. 1, when being short-circuited fault between the 6th power distribution equipment and the 7th power distribution equipment, the 3rd power distribution equipment, the protector of the 4th power distribution equipment and the 5th power distribution equipment all can not reflect described fault, can not apply for taking described communication network yet, the protector of the first power distribution equipment can reflect described fault, but due to the priority level of No. ID, the genome of the first power distribution equipment not as the second power distribution equipment high, so the protector of described the second power distribution equipment will take described communication network, carry out fault broadcast.
In concrete practical application, described protector can also specifically comprise high speed digital signal processor DSP and high-precision ADC modular converter and power supply ripple treatment technology, guarantees that the trueness error of protection is controlled at 2%; Adopting the benefit of high speed digital signal processor DSP to be, the DFT(Discrete Fourier Transform of all passages, discrete Fourier transform) computing can in time of every 1ms, all computing be once.In addition, on bus, the protector of all power distribution equipments can form the vertical poor net of cascade, when busbar fault; all inlet wire power distribution equipments are experienced short circuit current, and all outlet power distribution equipments are all without short circuit current, and system is judged as troubles inside the sample space; tripping circuit breaker, excises fault fast.
The disclosed power distribution equipment of the present embodiment, each power distribution equipment is protected location independently, by decentralization of decision making to each power distribution equipment, the reliability of protection is greatly improved, and according to the ID priority level of described genome, can make the moment of breaking down, only have the protector of the power distribution equipment that the ID priority of genome is high described in one or several to take network, communication data greatly reduces, avoided the competition of the communication resource, reduced the possibility of communication failure simultaneously, avoided because communication failure causes front and back level locking, losing the generation of protection situation in prior art, the priority level of No. ID, genome of take is fundamentally stopped the problem of power distribution equipment overstep tripping as carrying out the order of protection action, reduce the down-hole generation of power outage on a large scale, guarantee the safe operation of mine power supply system.
Another embodiment of the present invention also provides a kind of protection system, is applied to mining electric power monitoring system, comprising:
A plurality of power distribution equipments; Described power distribution equipment comprises: the protector that is assigned No. ID, the genome that represents power distribution equipment priority described in each; And the switch being connected with described protector; Wherein, higher the closer to the priority of the described power distribution equipment of supply network end;
Backstage, for receiving described fault message.
Concrete operation principle is same as the previously described embodiments, repeats no more herein.
Another embodiment of the present invention also provides another protection system, comprising:
A plurality of power distribution equipments; Described power distribution equipment comprises: the protector that is assigned No. ID, the genome that represents power distribution equipment priority described in each; And the switch being connected with described protector; Wherein, higher the closer to the priority of the described power distribution equipment of supply network end;
Backstage, for receiving described fault message.
Wherein, described power distribution equipment is connected in described circuit by optoelectronic composite cable; Described optoelectronic composite cable is: optical fiber embeds in cable, and enters power distribution equipment wire connection cavity by described cable entry, then through die-casting integral wall penetration optical fibers sleeve pipe, accesses the optoelectronic composite cable of protector fiber port.
Described optoelectronic composite cable completes the functions such as downhole data communication, cable monitoring running state by Optical Fiber Transmission; the power distribution equipment at cascade circuit two ends is linked up; form longitudinal difference protection passage, improved the antijamming capability of described power distribution equipment, guaranteed stability and the reliability of protection action.
All the other features and concrete operation principle are same as the previously described embodiments in the present embodiment, repeat no more herein.
Another embodiment of the present invention also provides another protection system, comprising:
A plurality of power distribution equipments; Described power distribution equipment comprises: the protector that is assigned No. ID, the genome that represents power distribution equipment priority described in each; And the switch being connected with described protector; Wherein, higher the closer to the priority of the described power distribution equipment of supply network end;
Backstage, for receiving described fault message.
In addition, the protector in described power distribution equipment also for: send at regular intervals test data to described backstage, when surpassing Preset Time and fail to send described test data, send fault message report to described backstage;
Described backstage also for: receive the report of described test data and fault message.
Concrete operation principle is:
Between the protector in described power distribution equipment, send at regular intervals test data to described backstage, whether normal with checking Networks of Fiber Communications, when failing to send described test data over Preset Time, by 485 communication networks, send fault messages report to described backstage;
Described backstage receives described test data and fault message report.
Because adopt the judgment mode of genome, lineal higher level's power distribution equipment of described fault power distribution equipment becomes upgrading the backup protection power distribution equipment of described fault power distribution equipment
The Fig. 2 of take describes as example, the first power distribution equipment 1DL between ground transformer substation and central substation and the second power distribution equipment 2DL, and the 3rd power distribution equipment 3DL between central substation and working section sub station and the 4th power distribution equipment 4DL are cascade power distribution equipment, its main protection is 0 second cascade longitudinal difference protection, and backup protection is the overcurrent protection with the time limit; The 5th power distribution equipment 5DL and the 6th power distribution equipment 6DL under working section sub station are load-carrying power distribution equipment, and its main protection is 0 second short-circuit protection and with the overload protection in time limit.
If during cascade line short between the 3rd power distribution equipment 3DL and the 4th power distribution equipment 4DL; the first power distribution equipment 1DL, the second power distribution equipment 2DL, the 3rd power distribution equipment 3DL and the 4th power distribution equipment 4DL have all experienced short circuit current, and all the other power distribution equipments flow through without short circuit current; Spill current between the first power distribution equipment 1DL and the second power distribution equipment 2DL is 0, so its cascade longitudinal difference protection is all failure to actuate; Spill current between the 3rd power distribution equipment 3DL and the 4th power distribution equipment 4DL is short circuit current, both actions in equal 0 second, the cascade circuit of isolation short circuit.
If during the 6th power distribution equipment 6DL short circuit, the first power distribution equipment 1DL, the second power distribution equipment 2DL, the 3rd power distribution equipment 3DL, the 4th power distribution equipment 4DL and the 6th power distribution equipment 6DL have all experienced short circuit current; Wherein, between the first power distribution equipment 1DL and the second power distribution equipment 2DL, and the spill current between the 3rd power distribution equipment 3DL and the 4th power distribution equipment 4DL is 0, so its cascade longitudinal difference protection is all failure to actuate; The 6th power distribution equipment 6DL0 moves second, excision fault; When the 6th power distribution equipment 6DL short circuit and while breaking down tripping, its higher level's power distribution equipment the 4th power distribution equipment 4DL upgrades to backup protection power distribution equipment, carries out overcurrent protection action, excision fault.
If when bus breaks down, the first power distribution equipment 1DL, the second power distribution equipment 2DL, the 3rd power distribution equipment 3DL and the 4th power distribution equipment 4DL have all experienced short circuit current, spill current is 0, and its cascade longitudinal difference protection is all failure to actuate; Surpass after Preset Time, the 4th power distribution equipment 4DL carries out overcurrent protection action, excision fault bus; Wherein, the overcurrent protection delay time definite value of the first power distribution equipment 1DL can be set as 0.5S, the overcurrent protection delay time definite value of the second power distribution equipment 2DL and the 3rd power distribution equipment 3DL can be set as 0.35S, and the overcurrent protection delay time definite value of the 4th power distribution equipment 4DL can be set as 0.2S; Its default overcurrent protection delay time can be determined according to concrete actual conditions.
The disclosed protection system of the present embodiment, not only can excise fault fast, and has avoided because communication failure causes front and back level locking, losing the generation of protection situation in prior art; Meanwhile, for each power distribution equipment provides backup protection power distribution equipment, guaranteed effective execution of protection action.
All the other features and concrete operation principle are same as the previously described embodiments in the present embodiment, repeat no more herein.
Preferably, another embodiment of the present invention also provides another protection system, and wherein, described protector and switch adopt industrial optical fiber Ethernet to carry out transfer of data.
The high-speed communication networking that adopts industrial optical fiber Ethernet to form can make can, with extremely short time communication, such as the time that any two station power distribution devices can be completed to a session is controlled in 3ms, be conducive to excise fast fault between any two station power distribution devices.
In concrete actual use, communication and the exchanges data of industrial optical fiber Ethernet net can adopt interrupt processing technology, can make like this fault message send at once, online all power distribution equipments can receive at once, guarantee to transmit between power distribution equipment the real-time of information.
All the other features and concrete operation principle are same as the previously described embodiments in the present embodiment, repeat no more herein.
Preferably, the protector in described power distribution equipment also for: send various information about power;
Described backstage also for: receive described various information about power, to described power distribution equipment monitor, analysis, harmonic analysis, coulometric analysis, tracing analysis, and accident analysis.
Described backstage receives described various information about power, to realize monitoring, analysis, harmonic analysis, the coulometric analysis to described power distribution equipment, and tracing analysis, and the various monitoring functions such as accident analysis.
In concrete practical application, the functional item that described backstage is monitored and analyzed described power distribution equipment is not defined as above-mentioned listed content, can be configured according to actual needs, to be applicable to concrete environment for use.
Another embodiment of the present invention also provides a kind of mining electric power monitoring system, as shown in Figure 3, comprising:
By interconnective each electric substation of optical fiber; As ground transformer substation 101, central substation 102 and working section sub station 103;
By optical fiber and the interconnective fiber optic Ethernet ring of ring exchanger 104;
The ground monitoring center being connected with fiber optic Ethernet ring;
Wherein, described each electric substation comprises: any one protection system described in above-described embodiment;
Described each electric substation comprises respectively: the first optic fiber converter 105 being connected with the communication bus of described each electric substation respectively and the second optic fiber converter 106; The other end of the first optic fiber converter 105 and the second optic fiber converter 106 is connected with described optical fiber respectively.
The differential connection of the interconnection power distribution equipment of each electric substation connects together, form a high speed communication bus, by the first optic fiber converter 105 and the second optic fiber converter 106, convert electrical signals to light signal again, incoming fiber optic Ethernet ring, is connected in the bus of another electric substation.Formed like this high speed communication bus system of a full electric network.This high speed communication bus system has formed redundant network too, to improve communication reliability.
All the other features and concrete operation principle are same as the previously described embodiments in the present embodiment, repeat no more herein.
Another embodiment of the present invention also provides a kind of guard method, be applied to mining electric power monitoring system, described mining electric power monitoring system electric substation comprises backstage and is assigned and represent No. ID, the genome of each power distribution equipment priority and be connected in the described power distribution equipment in circuit, and higher the closer to the priority of the described power distribution equipment of supply network end; Described overcurrent protection method as shown in Figure 4, comprising:
S101, while there is short trouble in described circuit, the power distribution equipment of upper and lower both sides, fault point trip and excises faulty line after finding that by interactive information poor stream is out-of-limit; In described circuit, join the described power distribution equipment that genome ID priority is high and send fault message to described backstage simultaneously;
While there is short trouble in described circuit, after the power distribution equipment of upper and lower both sides, fault point finds that by interactive information poor stream is out-of-limit, excision faulty line trips; While is because genome ID difference is joined by the institute of the power distribution equipment of upper and lower both sides, described fault point, the priority level that represents above-mentioned each power distribution equipment is different, now by join the described power distribution equipment that genome ID priority is high in described circuit, to described backstage, sends fault message.
S102, described backstage receive described fault message.
Described backstage receives described fault message, in actual applications can be for showing or record, to be applied in other subsequent control.
The disclosed guard method of the present embodiment, by decentralization of decision making to each power distribution equipment, the reliability of protection is greatly improved, and according to the ID priority level of described genome, can make the moment of breaking down, only have the high power distribution equipment of ID priority of genome described in one or several to take network, communication data greatly reduces, avoided the competition of the communication resource, avoided because communication failure causes front and back level locking, losing the generation of protection situation in prior art simultaneously, the priority level of No. ID, genome of take is fundamentally stopped the problem of power distribution equipment overstep tripping as carrying out the order of protection action, reduce the down-hole generation of power outage on a large scale, guarantee the safe operation of mine power supply system.
Another embodiment of the present invention also provides another guard method, as shown in Figure 5, comprising:
S201, described cubicle regular hour send test data to described backstage, when failing to send described test data over Preset Time, send fault message report to described backstage;
Concrete, described each cubicle regular hour sends test data to described backstage, certainly in actual use, described power distribution equipment can also receive the feedback data that in described backstage or other nets, power distribution equipment sends, when certain power distribution equipment surpasses Preset Time, do not carry out the transmission of test data, to backstage, send the report of fault message.
S202, described backstage receive described test data and fault message report;
While there is power distribution equipment fault in described circuit; because adopt the judgment mode of genome; lineal higher level's power distribution equipment of described fault power distribution equipment becomes auto-update the backup protection power distribution equipment of described fault power distribution equipment; when described fault power distribution equipment need to be carried out when action protection, by the backup protection power distribution equipment of described fault power distribution equipment, replace described fault power distribution equipment to carry out protection action.
S203, while there is short trouble in described circuit, the power distribution equipment of upper and lower both sides, fault point trip and excises faulty line after finding that by interactive information poor stream is out-of-limit; In described circuit, join the described power distribution equipment that genome ID priority is high and send fault message to described backstage simultaneously;
S204, described backstage receive described fault message.
When normal operation; described backstage judges in described circuit, whether to occur power distribution equipment fault; can guarantee the normal work of optical-fibre channel, situation about simultaneously cannot carry out for contingent protection action provides reserved regimen, has guaranteed the reliability of described guard method.
All the other steps and concrete operation principle are same as the previously described embodiments in the present embodiment, repeat no more herein.
Preferably, when described power distribution equipment comprises: be assigned the protector of No. ID, the genome that represents power distribution equipment priority described in each, and during the switch being connected with described protector, described guard method as shown in Figure 6, comprising:
S3011, while there is short trouble in described circuit, the described protector in the described power distribution equipment of upper and lower both sides, described fault point sends short trouble trip signal after finding that by interactive information poor stream is out-of-limit;
Described switch in the described power distribution equipment of S3012, upper and lower both sides, described fault point receives described short trouble trip signal, and excision faulty line trips;
S3013, while join the described power distribution equipment that genome ID priority is high and send fault message to described backstage in described circuit;
S302, described backstage receive described fault message.
By the protector of described power distribution equipment, carried out transmission and the control to the described switch of described power distribution equipment of data communication, refinement in described power distribution equipment concrete function realize object.
All the other steps and concrete operation principle are same as the previously described embodiments in the present embodiment, repeat no more herein.
Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the present invention.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a power distribution equipment, is applied to mining electric power monitoring system, is connected in the circuit being connected with backstage, it is characterized in that, comprising:
Be assigned the protector of No. ID, the genome that represents power distribution equipment priority described in each, for when there is short trouble in described circuit, protector in the power distribution equipment of upper and lower both sides, fault point sends short trouble trip signal after finding that by interactive information poor stream is out-of-limit; The protector of joining in described circuit in the described power distribution equipment that genome ID priority is high sends fault message to described backstage simultaneously; Wherein, higher the closer to the priority of the described power distribution equipment of supply network end;
The switch being connected with described protector, for the excision faulty line that trips according to described short trouble trip signal.
2. a protection system, is applied to mining electric power monitoring system, it is characterized in that, comprising:
A plurality of power distribution equipments as claimed in claim 1;
Backstage, for receiving described fault message.
3. protection system according to claim 2, is characterized in that, described power distribution equipment is connected in described circuit by optoelectronic composite cable; Wherein, described optoelectronic composite cable is: optical fiber embeds in cable, and enters power distribution equipment wire connection cavity by described cable entry, then through die-casting integral wall penetration optical fibers sleeve pipe, accesses the optoelectronic composite cable of protector fiber port.
4. protection system according to claim 2, it is characterized in that, protector in described power distribution equipment also for: send at regular intervals test data to described backstage, when surpassing Preset Time and fail to send described test data, send fault message report to described backstage;
Described backstage also for: receive the report of described test data and fault message.
5. protection system according to claim 2, is characterized in that, described protector and switch adopt industrial optical fiber Ethernet to carry out transfer of data.
6. protection system according to claim 2, is characterized in that, the protector in described power distribution equipment also for: send various information about power;
Described backstage also for: receive described various information about power, to described power distribution equipment monitor, analysis, harmonic analysis, coulometric analysis, tracing analysis, and accident analysis.
7. a mining electric power monitoring system, is characterized in that, comprising:
By interconnective each electric substation of optical fiber;
By optical fiber and the interconnective fiber optic Ethernet ring of ring exchanger;
The ground monitoring center being connected with described fiber optic Ethernet ring;
Wherein, described each electric substation comprises: any described a kind of protection system of claim 2 to 6;
Described each electric substation comprises respectively: the communication bus of Yu Ge electric substation is connected respectively the first optic fiber converter and the second optic fiber converter; The other end of described the first optic fiber converter and the second optic fiber converter is connected with described optical fiber respectively.
8. a guard method, it is characterized in that, be applied to mining electric power monitoring system, described mining electric power monitoring system electric substation comprises backstage and is assigned and represent No. ID, the genome of each power distribution equipment priority and be connected in the described power distribution equipment in circuit, and higher the closer to the priority of the described power distribution equipment of supply network end; Described guard method comprises:
While there is short trouble in described circuit, after the power distribution equipment of upper and lower both sides, fault point finds that by interactive information poor stream is out-of-limit, excision faulty line trips; In described circuit, join the described power distribution equipment that genome ID priority is high and send fault message to described backstage simultaneously;
Described backstage receives described fault message.
9. guard method according to claim 8, is characterized in that, also comprises:
The described cubicle regular hour sends test data to described backstage, when failing to send described test data over Preset Time, sends fault message report to described backstage;
Described backstage receives described test data and fault message report.
10. guard method according to claim 8, is characterized in that, described power distribution equipment comprises: be assigned the protector of No. ID, the genome that represents power distribution equipment priority described in each, and the switch being connected with described protector; Described while there is short trouble in described circuit, after the power distribution equipment of upper and lower both sides, fault point finds that by interactive information poor stream is out-of-limit, the step of excising faulty line that trip comprises:
While there is short trouble in described circuit, the described protector in the described power distribution equipment of upper and lower both sides, described fault point sends short trouble trip signal after finding that by interactive information poor stream is out-of-limit;
Described switch in the described power distribution equipment of upper and lower both sides, described fault point receives described short trouble trip signal, and excision faulty line trips.
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| CN201410034807.7A CN103730885A (en) | 2014-01-24 | 2014-01-24 | Power distribution device, protective system, mining power monitoring system and protection method |
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| CN201410034807.7A CN103730885A (en) | 2014-01-24 | 2014-01-24 | Power distribution device, protective system, mining power monitoring system and protection method |
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