CN105406597A - Information interactive device for remote transformer substation - Google Patents
Information interactive device for remote transformer substation Download PDFInfo
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- CN105406597A CN105406597A CN201510920041.7A CN201510920041A CN105406597A CN 105406597 A CN105406597 A CN 105406597A CN 201510920041 A CN201510920041 A CN 201510920041A CN 105406597 A CN105406597 A CN 105406597A
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- 230000002452 interceptive effect Effects 0.000 title abstract description 5
- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 238000012544 monitoring process Methods 0.000 claims description 12
- 239000013078 crystal Substances 0.000 claims description 3
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000004891 communication Methods 0.000 description 17
- 238000006243 chemical reaction Methods 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000013307 optical fiber Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 102100036345 Calicin Human genes 0.000 description 1
- 101000714682 Homo sapiens Calicin Proteins 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00007—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using the power network as support for the transmission
- H02J13/00009—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using the power network as support for the transmission using pulsed signals
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
-
- H02J13/0075—
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
-
- 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
- Y04S10/16—Electric power substations
-
- 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
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/121—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using the power network as support for the transmission
-
- 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
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention relates to an information interactive device for a remote transformer substation. The information interactive device comprises a chip LPC2131 and a GPRS module MC55; the RXD1 port and the TXD1 port of the chip LPC2131 are respectively connected to the RXD0 port and the TXD0 port of the GPRS module MC55; the P0 port and the P1 port of the chip LPC2131 are an analogue signal receiving end and an instruction signal receiving end respectively; the GPRS module MC55 is also connected to the pin of an SIM clamping base; and a GSM antenna is also arranged on the GPRS module MC55. The information interactive device disclosed by the invention can be applied to information exchange of a remote unattended transformer substation, which is scattered in position and small in capacity; therefore, effective transmission of a dispatching instruction and operation data can be ensured; the equipment investment and the maintenance cost can be greatly reduced; and manpower resources can be saved.
Description
Technical field
The present invention relates to substation information switching technology field, be specially the mutual device of a kind of outlying substation information.
Background technology
At present, electric power system unattended substation is comparatively universal, and except the raising of self intellectuality, automatization level in standing, also have dispatch command how to assign, the problem how service data returns, this will use message-switching technique.At present, microwave and optical-fibre communications are the preferred manner of power plant and City Substation, but due to the construction cost of great number, microwave and optical-fibre communications not too adapt to backwoodsman Small Substation.First, microwave communication, because equipment complexity is various, also need to choose location, high-altitude and build transmitting, receive tower etc., cost will reach more than 1,000,000 yuan; And optical-fibre communications, except the auxiliary facility such as light source and optical splitter, the only transmission cable about cost of 2 yuan every meter, makes long range propagation and maintenance cost is high over a long time, therefore adopt comparatively extensive on the outskirts of a town between intensive transformer station, but in outlying mountain area, even minority area, because of the transformer station that people's livelihood engineering is set up, general capacity is little, electric pressure is not high, in addition position is scattered, and hinge is not strong, therefore microwave and optical-fibre communications all should not adopt.
The communication systems such as existing outside telecommunication and GPRS, cover face width, and reliability is strong, if can use, then can reduce equipment investment and maintenance cost, so can develop a kind of substation information switching equipment that can utilize GPRS communication system.
Summary of the invention
For the problems referred to above, the object of the present invention is to provide the mutual device of a kind of substation information that GPRS communication system can be utilized to realize information exchange, technical scheme is as follows:
The mutual device of a kind of outlying substation information, comprise chip LPC2131 and GPRS module MC55, RXD1 port and the TXD1 port of described chip LPC2131 are connected RXD0 port and the TXD0 port of described GPRS module MC55 respectively, and the P0 port of described chip LPC2131 and P1 port are respectively analog signal receiving terminal and command signal receiving terminal; Described GPRS module MC55 also connects the pin that SIM card is sat, and described GPRS module MC55 is also provided with GSM antenna.
Further, the crystal oscillator frequency of described chip LPC2131 is 11.0592MHz, and data transmission rate is 9600b/s.
Further, the Vref port reference voltage of described chip LPC2131 is 5V, and chip LPC2131 also accesses the voltage of 5 groups of 3.3-4.8V respectively by VSS port, and is provided with the integrated regulator LDO with wideband voltage and wideband current.
Further, described integrated regulator LDO connects more than one electric capacity; The BATT-port of described GPRS module MC55 is connected with NTC thermistor and voltage stabilizing didoe, and CHARGE port is connected with anti-electromagnetic interference device ESD.
Further, monitoring and reset circuit centered by integrated package CAT1832 is also comprised.
Beneficial effect of the present invention is: the present invention can be applicable in the information exchange of the outlying unattended substation that position is scattered, capacity is small-sized, both effective transmission of dispatch command and service data can have been ensured, significantly reduce equipment investment and maintenance cost again, and save human resources.
Accompanying drawing explanation
Fig. 1 is substation information transferring structure schematic diagram.
Fig. 2 is information interaction device electrical combination figure.
Fig. 3 is transformer iron core grounding current monitoring of software flow chart.
Embodiment
Below in conjunction with specific embodiment, the present invention will be further described: as shown in Figure 1, substation information transmits agent structure: in each service data and monitoring system, after signals collecting, Shape correction and digital-to-analogue conversion, send into the central signal processor with benchmark setting, good in interactive function, carry out the multilevel iudge of test signal, whether normally determine, and realize storing nearby and showing, in order to inquiry; Meanwhile, start communication interface, by the signal is far passed centralized control center, carry out accident analysis, make relevant treatment and determine; The monitored instruction of the same receiving scheduling operational mode of communication system and centralized control center, and through the process issue of central signal machine and digital-to-analogue conversion, implemented in power transformation operation system.
The feature such as scattered according to outlying unattended substation position, capacity is small-sized, determining to use external communication network, to do signal transmission be good mode, and according to functional requirement and structure of block diagram, information interaction device circuit theory diagrams are as shown in Figure 2: comprise chip LPC2131 and GPRS module MC55, RXD1 port and the TXD1 port of described chip LPC2131 are connected RXD0 port and the TXD0 port of described GPRS module MC55 respectively, and the TXD0 port wherein on GPRS module MC55 is for receiving the data sent from chip LPC2131TXD1 port; And the RXD0 port on GPRS module MC55 is for sending data to chip LPC2131RXD1 port.Exchanges data and communication is formed thus between GPRS communication module and ARM chip.
Pin IGT on GPRS communication module MC55 is mainly used in electrification reset, realizes the reset conversion of a module thus.
The P0 port of described chip LPC2131 and P1 port are respectively analog signal receiving terminal and command signal receiving terminal.Utilize multiple ports of P0 on chip LPC2131, also directly can receive the analog signal after monitoring system collection arrangement, carry out A/D conversion by chip internal; Utilize multiple I/O ports of P1 on chip LPC2131, programming receives the instructions signal that host computer passes down.
GPRS module MC55 also connects SIM card and sits: in the baseband processor of GPRS module MC55, have a comprehensive SIM interface, it is directly wired to host interface (for end-to-end link device), for being connected to outside SIM card holder.Here the SIM card adopted has 6 pins: CCCLK, CCVCC, CCIO, CCRST, CCIN and CCGND, and correspondence is connected on 1-6 pin of MC55 module respectively.Distance between modular connector and the pin of SIM card holder does not exceed 20cm, and institute's distribution has held and prevents High-frequency Interference effect, and between pin, electric capacity needs near installing, better effects if.
The oscillator EPSON crystal oscillator frequency of chip LPC2131 is 11.0592MHz, and data transmission rate is set to 9600b/s.
Because of the block functions of chip LPC2131 and GPRS module MC55 inside, hold on the basis of employing 5 volts of reference voltages at Vref, be provided with 5 groups of 3.3-4.8V power supplys altogether, all through VCC and VSS port access chip, and be provided with the integrated regulator LDO with wideband voltage (0.9V to 80V) and wideband current (100mA to 10A).The electric capacity of integrated regulator LDO periphery, NTC thermistor, multiple diode, voltage stabilizing didoe and the anti-electromagnetic interference device ESD etc. that are connected from chip BATT-are the protective effect of the important devices such as the linearity for improving DC power supply, stability and enhancing storage battery and the configuration of setting up.
In the lower right of Fig. 2, be similarly the quality problems of 4.8V and 3.3V supply voltage, be also provided with the monitoring and reset circuit centered by integrated package CAT1832, this circuit is at discovery power issue and debug circuit, play a role in service work.
Described GPRS module MC55 is also provided with GSM antenna.Through the digital signal that chip LPC2131 and GPRS module MC55 will gather, edit, gone out by GSM antenna transmission in the form of an electromagnetic wave, through the wireless communication networks such as telecommunication and GPRS, signal is sent to the Surveillance center in a distant place, reach the object of analyzing and processing; GSM antenna receives distant signal equally, sends scheduling and monitored instruction to intelligent chip, after conversion process, pays operational system and completes.
Below for transformer iron core grounding current monitoring, further illustrate the process of information exchange of the present invention.
In transformer, between coil and iron core, there is parasitic capacitance, under electric field action, may floating potential be produced, cause partial discharge, even insulation breakdown etc.Therefore, be necessary design one point reliability ground connection, induced electromotive force is discharged.But when more than 2 ground connection appears in transformer core, also there will be potential difference, form loop, produce circulation.Cause eddy-current heating, cause insulation damages, even cause trip accident etc.Therefore, iron core needs one point earth, but never allows multipoint earthing.In iron core grounding current monitoring system, software flow is as shown in Figure 3, and concrete steps are as follows:
1. initialization: work starts, first resets monitoring system and the initialization process such as reset.
2. human-computer dialogue: the lower column signal of input and data from keyboard:
1), monitored transformer and iron core grounding line sequence number (device adapts to the monitoring of multiple stage main transformer);
2), polling period: for avoiding temporary impact and subduction signal operation time etc., to confirm authenticity and the continuity of fault, it is 10 seconds that this device arranges polling period;
3), test and insert open circuit voltage U
k, initial current I
0, the regulation according to DL/T596-199 " power equipment preventive trial directive/guide ": when core insulation is normal, earth current I
0must not 0.1A be greater than, thus survey open circuit voltage U
kalso can be very little, can initial resistivity value R be obtained through Ohm's law
0:
R
0=U
k/I
0
This R
0being equivalent to internal resistance, is substantially constant, but when test is greater than 0.1A to earth current Ic, when even exceeding many, finds multiple difference K by proportionate relationship:
K=Ic/I
0
When transformer is because of load weight, be difficult to conversion and regulate, namely can not immediately interruption maintenance time, can connect access current-limiting resistance Rc, to reduce earth current value, reduces caloric value.The current-limiting resistance Rc sealed in then can use electric current multiple difference K conversion and calculate:
Rc=K*R
0
The series connection access of Rc reduces earth current, and reduce the promptly effective measures of warming-up effect, the Rc calculating formula that this patent provides, solves parameter problem identificatioin from mathematic(al) mode, is behave of great practical value.
Above computation schema and numeral are determined, can realize in software programming.
3. multilevel iudge: when optimum configurations completes, data conversion treatment is carried out automatically in single-chip microcomputer inside; On the other hand, surveyed by analog circuit and the digital signal changed through A/D, give microcomputer CPU center in the lump and compare differentiation:
Time normal, measured signal, close to 0, must be less than benchmark signalization, now continues " loop test "; Otherwise when more than 2 ground connection appear in monitored transformer core, will earth current be produced, then really can occur the result of " actual measurement > is arranged ".
4. display alarm: now, is stored the time, transformer sequence number etc. of the generation of this fault on the one hand by intelligent chip record, on the other hand signal transmission is done display alarm to liquid crystal display screen.
5. information transmission: ground signalling is while liquid crystal display is reported to the police, and various places, particularly unattended substation, again through aforementioned information interaction device, be sent to centralized control center by monitor signal through antenna.
Power transformation operation monitoring centralized control center is the terminal of communication system, and this terminal has carries out Decoding Analysis to communication data, makes multilevel iudge and display alarm and accident treatment prompt facility; This terminal is set up database, the digital signal of front-end collection, editor, arrangement is built card and stores, to do historical query; This terminal also can set up expert system, the information realizations such as data, form, figure are used alternately and to be inquired about, facilitates parameter to revise, sends emergency parachute, make service arrangement etc., increase substantially system safety stability thus.
Other monitoring system such as direct current, temperature can use with reference to this software flow G-Design.
Claims (5)
1. the mutual device of outlying substation information, it is characterized in that, comprise chip LPC2131 and GPRS module MC55, RXD1 port and the TXD1 port of described chip LPC2131 are connected RXD0 port and the TXD0 port of described GPRS module MC55 respectively, and the P0 port of described chip LPC2131 and P1 port are respectively analog signal receiving terminal and command signal receiving terminal; Described GPRS module MC55 also connects the pin that SIM card is sat, and described GPRS module MC55 is also provided with GSM antenna.
2. the mutual device of outlying substation information according to claim 1, is characterized in that, the crystal oscillator frequency of described chip LPC2131 is 11.0592MHz, and data transmission rate is 9600b/s.
3. the mutual device of outlying substation information according to any one of claim 1 or 2, it is characterized in that, the Vref port reference voltage of described chip LPC2131 is 5V, chip LPC2131 also accesses the voltage of 5 groups of 3.3-4.8V respectively by VSS port, and is provided with the integrated regulator LDO with wideband voltage and wideband current.
4. the mutual device of outlying substation information according to claim 3, is characterized in that, described integrated regulator LDO connects more than one electric capacity; The BATT-port of described GPRS module MC55 is connected with NTC thermistor and voltage stabilizing didoe, and CHARGE port is connected with anti-electromagnetic interference device ESD.
5. the mutual device of outlying substation information according to claim 3, is characterized in that, also comprises monitoring and reset circuit centered by integrated package CAT1832.
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Citations (2)
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CN102025196A (en) * | 2010-12-24 | 2011-04-20 | 江苏电力信息技术有限公司 | Service oriented architecture (SOA)-based grid equipment monitoring and failure positioning wireless system |
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Patent Citations (2)
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CN102025196A (en) * | 2010-12-24 | 2011-04-20 | 江苏电力信息技术有限公司 | Service oriented architecture (SOA)-based grid equipment monitoring and failure positioning wireless system |
CN205231855U (en) * | 2015-12-11 | 2016-05-11 | 国网四川省电力公司电力科学研究院 | Information interaction ware hardware combinatorial circuit of transformer substation |
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