CN204156594U - A kind of region backup auto-activating device - Google Patents

A kind of region backup auto-activating device Download PDF

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Publication number
CN204156594U
CN204156594U CN201420562846.XU CN201420562846U CN204156594U CN 204156594 U CN204156594 U CN 204156594U CN 201420562846 U CN201420562846 U CN 201420562846U CN 204156594 U CN204156594 U CN 204156594U
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China
Prior art keywords
transformer station
region
auto restart
prepared auto
activating
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CN201420562846.XU
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Inventor
董凯达
金震
冯宝成
王彦国
张春合
余群兵
严伟
沈全荣
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NR Electric Co Ltd
NR Engineering Co Ltd
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NR Electric Co Ltd
NR Engineering Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20Smart grids as enabling technology in buildings sector
    • YGENERAL 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
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS 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
    • Y04S20/00Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/12Energy storage units, uninterruptible power supply [UPS] systems or standby or emergency generators, e.g. in the last power distribution stages
    • YGENERAL 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
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS 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
    • Y04S40/00Systems 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
    • Y04S40/12Systems 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
    • Y04S40/124Systems 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 wired telecommunication networks or data transmission busses

Abstract

The utility model discloses a kind of region backup auto-activating device, be applicable to 220kV transformer station in electric power system to power weak situation, described 220kV transformer station weakness of powering comprises: single main transformer runs, 220kV is powered by single power supply and cannot carry out the situations such as 220kV prepared auto restart.Described region backup auto-activating device comprises region prepared auto restart logic discrimination device and several acquisition execution unit, all acquisition execution units are respectively by Networks of Fiber Communications and region prepared auto restart logic discrimination device real time communication, and mutual real time information also performs prepared auto restart breaker tripping and closing order.If described region backup auto-activating device can realize 220kV transformer station power weakness time its 110kV bus dead electricity, be its fast recovery of power supply by series-fed structure or interconnection using another 220kV transformer station as stand-by power supply, and do not require that stand-by heat switch must be positioned at the 220kV transformer station side at the 110kV bus place of dead electricity.

Description

A kind of region backup auto-activating device
Technical field
The utility model relates to a kind of automatic switching device of electric power system power transmission and distribution, particularly a kind of microcomputer type automatic switching device of standby power supply.
Background technology
In recent years, backup auto-activating device is used widely in the electrical network of 220kV and following grade, in the maintenance stabilization of power grids with improve in power supply reliability etc. and serve important function.
For 220kV transformer station, weak situation of powering may be there is: such as due to the reason such as built by separate periods or overhaul of the equipments, the weak mode that separate unit main transformer runs may be there is, if now separate unit main transformer fault, the 110kV bus dead electricity of 220kV transformer station can be caused, thus cause, by the Duo Zuo 110kV transformer station dead electricity of this bussed supply, causing a large number of users to have a power failure; And for example because the maintenance of part 220kV incoming power or electric network composition problem cause Jin You mono-road incoming power or Jin You mono-road double loop to be that 220kV transformer station powers, and this 220kV transformer station cannot carry out 220kV prepared auto restart, then there will be the weak mode of being powered by single power supply, if transformer station's dead electricity of now its power supply or supply line's fault, then there will be 220kV transformer station dead electricity and cause the Duo Zuo 110kV transformer station dead electricity of lower extension.
In order to avoid this situation, general solution uses conventional alternate power technologies, stand-by power supply adopts other transformer stations to the interconnection of 220kV transformer station 110kV bus, when 220kV transformer station 110kV bus dead electricity, tripping 220kV main transformer of transformer substation 110kV side switch, close interconnection switch afterwards, for 220kV transformer station 110kV bus restores electricity.
The problem of above-mentioned solution is, interconnection stand-by power supply is generally provided by other 110kV transformer station, this 110kV transformer station is powered in other transformer stations, in order to guarantee the stand-by power supply as 220kV transformer station, interconnection must remain hot stand-by duty at the switch of 220kV transformer substation side, and "on" position must be remained at the switch of 110kV transformer substation side, such as shown in Fig. 1, in order to ensure that the conventional prepared auto restart of 220kV transformer station A can play a role, A02 must keep hot stand-by duty, B01, B02, C01, C02, D01 all needs to keep "on" position.Like this, when the 110kV bus dead electricity of 220kV transformer station A, conventional prepared auto restart tripping A01 switch, close A02 switch, can restore electricity like this for the 110kV bus of 220kV transformer station A.
Operational mode can be caused like this to fix cannot change flexibly, once stand-by heat switch cannot not use conventional prepared auto restart to realize fast recovery of power supply in 220kV transformer station side, such as shown in Fig. 1, if because operational mode need the A02 switch that closes, open any one in B01, B02, C01, C02, D01 as stand-by heat switch, the conventional prepared auto restart of the A that stands cannot be able to play a role because our station does not have stand-by heat switch.In addition, the 110kV transformer station at interconnection place is because main switch and the interconnection switch of supplying is all in co-bit, if without other stand-by power supplies, the condition using conventional prepared auto restart will do not possessed, for common tandem electric power-feeding structure, 110kV transformer station of acting in collusion to make each other's confessions is likely do not have other stand-by power supplies, therefore cannot be restored electricity by conventional prepared auto restart, power supply reliability can be very poor, such as shown in Fig. 1, during A02 switch stand-by heat, stand B, stand C because our station does not have stand-by heat switch, be in the state that conventional prepared auto restart can not play a role, once dead electricity cannot be recovered automatically.Therefore, conventional prepared auto restart technology cannot solve the dumb and interconnection place 110kV of operational mode and to act in collusion to make each other's confessions the problem of transformer substation spare power automatic switching.
Also there is the region spare power automatic switching system also existed based on dispatching patcher at present, the data of transformer station are gathered by dispatching patcher, realize restoring electricity after the prepared auto restart logic discrimination of feasible region, but because dispatch data net information interaction speed is slow, tens seconds even speed of minute level can only be reached, realizing restores electricity needs the time of a few minutes, can not reach the requirement of fast recovery of power supply.
Utility model content
The purpose of this utility model is: the situation of weakness of powering for electric power system 220kV transformer station, a kind of region backup auto-activating device is provided, the prepared auto restart problem during 220kV transformer station 110kV bus dead electricity of power supply weakness can be solved, and the various operational modes of electric power system can be adapted to, not to be heated the restriction of backup circuit breaker position, and the 110kV that can solve interconnection stand-by power supply place acts in collusion to make each other's confessions the prepared auto restart problem of transformer station.
In order to reach above-mentioned purpose, solution of the present utility model is:
A kind of region backup auto-activating device, it is characterized in that: described region backup auto-activating device comprises a region prepared auto restart logic discrimination device and two or multiple stage acquisition execution unit, in electric power system, an acquisition execution unit is installed by each transformer station, select arbitrary transformer station in electric power system that a region prepared auto restart logic discrimination device is installed, all acquisition execution units are connected and mutual real time information with region prepared auto restart logic discrimination device by Networks of Fiber Communications, acquisition execution unit gather place transformer station state information and on give region prepared auto restart logic discrimination device, breaker tripping and closing result is also issued to the actual execution of acquisition execution unit of corresponding transformer station by the differentiation of prepared auto restart logic discrimination device feasible region, region prepared auto restart strategy.
In such scheme, each Sampling interrupt collection of described acquisition execution unit also upgrades the state of primary station, and each or every two Sampling interrupt send once to described region prepared auto restart logic discrimination device, and information is carried out with the speed of Millisecond alternately.
In such scheme; described acquisition execution unit gathers voltage, the current-mode analog quantity information of place transformer station; by criterion be on the spot converted to needed for the prepared auto restart logic discrimination device of described region having pressure with no pressure, have stream without stream switching value result; gather the line switching position of place transformer station and the on-off model of protection act, the state of transformer station is all according to switching value result being given described region prepared auto restart logic discrimination device the most at last simultaneously.
After adopting such scheme, the beneficial effects of the utility model are:
(1) the various operational modes of the electric power system comprising the weak 220kV transformer station of power supply can be adapted to, the 220kV transformer station side that stand-by heat switch must be positioned at the operation of single main transformer need not be limited;
(2) 110kV between tandem electric power-feeding structure Liang Ge 220kV transformer station act in collusion to make each other's confessions transformer station's dead electricity time also can be restored electricity by prepared auto restart;
(3) Liang Ge 220kV transformer station 110kV bus by between statements based on collusion structure or interconnection for subsequent use each other, the restriction of the backup circuit breaker position that is not heated.
(4) region prepared auto restart logic discrimination device and each acquisition execution unit are with the speed interactive information of Millisecond, realize fast recovery of power supply.
Accompanying drawing explanation
Fig. 1 be prior art the main electrical scheme schematic diagram of electric power system that is suitable for;
Fig. 2 is the applicable cases schematic diagram of the utility model region backup auto-activating device in a kind of electric power system;
Fig. 3 is the schematic diagram of a kind of situation of change of electric power system main electrical scheme that the utility model is applied;
Fig. 4 is the program implementing procedure of the utility model region backup auto-activating device.
Embodiment
Below with reference to accompanying drawing, the technical solution of the utility model is described in detail.
The utility model provides a kind of region for backup auto-activating device, be applicable to 220kV transformer station in electric power system to power weak situation, described 220kV transformer station weakness of powering comprises: single main transformer runs, 220kV is powered by single power supply and cannot carry out 220kV prepared auto restart.
Shown in figure 2, the A and station D that stands is Liang Zuo 220kV transformer station, and the B and station C that stands is two 110kV statements based on collusion transformer stations, and L1, L2, LN are some 110kV outlets of 220kV transformer station A, for many 110kV Load Substation of lower extension are powered.Fig. 2 is a kind of signal, and expression 220kV transformer station A only has a main transformer to run or is its power supply by single power supply, is the weak link in electric power system.The B02 switch of interconnection BC line is off state, as stand-by heat switch, can be used for automatic closing, and B02 stand-by heat is only a kind of citing, and stand-by heat switch can also be chosen as the arbitrary place in A02, B01, C01, C02, D01 flexibly.220kV transformer station D is another 220kV transformer station, by the stand-by power supply of statements based on collusion structure as 220kV transformer station A.B, C two 110kV statements based on collusion transformer stations are had between Liang Zuo 220kV transformer station, this figure is only a kind of citing, two 110kV statements based on collusion transformer stations are not limited only between Liang Zuo 220kV transformer station, can have one or more, the 110kV bus of Ji Liangzuo 220kV transformer station of transformer station of also can not acting in collusion to make each other's confessions directly is connected by interconnection.
220kV transformer station D also can run for single main transformer or single power supply is powered, and the switch being in hot stand-by duty also can in other positions, this situation as shown in Figure 3, Fig. 3 represent 220kV transformer station D also only have main transformer to run or by single power supply for it is powered, it is the weak link in electric power system, some 110kV outlets that L1 ', L2 ', LN ' are 220kV transformer station D, for many 110kV Load Substation of lower extension are powered.The operational mode of Fig. 3 take A02 as stand-by heat switch, be only a kind of citing, the switch being in hot stand-by duty can also be chosen as the arbitrary place in B01, B02, C01, C02, D01 flexibly, the 110kV bus of Liang Zuo 220kV transformer station is mutually for subsequent use by string data electric power-feeding structure, if middle without statements based on collusion transformer station, is directly for subsequent use each other by interconnection.
Region of the present utility model backup auto-activating device comprises a region prepared auto restart logic discrimination device and several acquisition execution unit, as shown in Figure 2.UnitA/B/C/D in Fig. 2 represents the acquisition execution unit that transformer station A/B/C/D configures respectively.Each transformer station configures an acquisition execution unit respectively, comprise two 220kV power stations and between 110kV act in collusion to make each other's confessions transformer station, select one of them transformer station to configure a region prepared auto restart logic discrimination device, region prepared auto restart logic discrimination device and each acquisition execution unit are by the mutual real time information of Networks of Fiber Communications.Acquisition execution unit gathers the switching value information such as analog quantity information and the position of the switch such as voltage, electric current of transformer station, send in conjunction with on the semaphore that criterion is on the spot converted to needed for the prepared auto restart logic discrimination device of region, receive and the prepared auto restart breaker tripping and closing order that issues of execution area prepared auto restart logic discrimination device simultaneously.The logic discrimination of prepared auto restart logic discrimination device feasible region, region prepared auto restart strategy.
Each acquisition execution unit is connected with described region prepared auto restart logic discrimination device by Networks of Fiber Communications, in order to realize the state information real-time Transmission of transformer station to region prepared auto restart logic discrimination device, the each Sampling interrupt collection of acquisition execution unit also upgrades the state of primary station, the concrete time span of Sampling interrupt is relevant with the arithmetic speed of CPU, be generally 0.833 millisecond or 1.667 milliseconds, simultaneously, each or every two Sampling interrupt send once to region prepared auto restart logic discrimination device, like this can transformer station's state of using of feasible region prepared auto restart logic discrimination device every 1-2 millisecond and once renewable.
In order to ensure that optical fiber communication dredging collateral can not be blocked by huge information interaction amount, need the quantity controlling interactive information, if directly transmission voltage, current value will increase information content greatly, in order to avoid this situation, acquisition execution unit gathers the voltage of place transformer station, current-mode analog quantity information, being converted to by criterion on the spot having pressure with no pressure needed for the prepared auto restart logic discrimination device of described region, there is stream without stream switching value result, gather the line switching position of place transformer station and the on-off model of protection act simultaneously, the state of transformer station is all according to switching value result being given described region prepared auto restart logic discrimination device the most at last.The information content needing transmission will be reduced after this process, prevent information from blocking and destroying real-time.
The program circuit of region backup auto-activating device, with reference to figure 4, mainly contains following five steps:
Step 1: system operation mode identification:
Region prepared auto restart logic discrimination device is by the acquisition execution unit acquisition state information in each transformer station, include but not limited to: the location status of the busbar voltage state of electric power system Zhong Ge transformer station, line current state and each line switching, and by above-mentioned information identification system operational mode, and record the position of stand-by heat switch.Such as, stand-by heat switch in Fig. 2 is A02, and described region prepared auto restart logic discrimination device record stand-by heat switch is the A02 switch of station A.
Step 2: charging prepares:
Electric power system is normally run, each transformer substation voltage is normal, and do not have the condition of locking prepared auto restart, described region prepared auto restart logic discrimination device completes charging and prepares after charging time delay (time delay is value within the scope of 0.5s ~ 60s), puts charging complete mark.
Step 3: transformer station's dead electricity or the system failure differentiate:
After completing charging preparation, if the supply line of 220kV transformer station or main transformer fault cause its 110kV bus dead electricity, or electric power system breaks down and causes part transformer station dead electricity, the described busbar voltage state of the region comprehensive each transformer station of prepared auto restart logic discrimination device, the position of interconnection switch and current status differentiate, determine fault coverage, and the action logic of starting region prepared auto restart, described action logic and step 4,5.
Step 4: tripping operation isolated fault
Described logic discrimination device selects according to the differentiation result of step 3 fault coverage the switch being suitable for isolated fault, and the acquisition execution unit to selected switch place sends trip signal, makes switch trip with isolated fault.
Step 5: close a floodgate and restore electricity:
Described region prepared auto restart logic discrimination device performs closing operation thermotropism backup circuit breaker place acquisition execution unit after confirming trip switch tripping sends order of closing a floodgate, and the described stand-by heat switch that closes realizes restoring electricity.
Under the operational mode of Fig. 2, if main transformer fault or incoming power failure and other reasons cause the 110kV bus dead electricity of 220kV transformer station A, then region prepared auto restart action, tripping main transformer 110kV side switch A01, close stand-by heat switch B02 afterwards, by statements based on collusion structure with 220kV transformer station D for the 110kV bus of 220kV transformer station A restores electricity.For conventional prepared auto restart, cannot prepared auto restart in dead electricity transformer station due to stand-by heat switch B02, therefore region prepared auto restart must be adopted.
Under the operational mode of Fig. 3, there is the weak situation of power supply in 220kV transformer station A and 220kV transformer station D.If main transformer fault or incoming power failure and other reasons cause the 110kV bus dead electricity of 220kV transformer station A, then region prepared auto restart action, tripping main transformer 110kV side switch A01, close interconnection switch A02 afterwards, for the 110kV bus of 220kV transformer station A restores electricity; If main transformer fault or incoming power failure and other reasons cause the 110kV bus dead electricity of 220kV transformer station D, then region prepared auto restart action, tripping main transformer 110kV side switch D02, close interconnection switch A02 afterwards, for the 110kV bus of 220kV transformer station D restores electricity.The 110kV bus of Liang Zuo 220kV transformer station achieves for subsequent use each other by statements based on collusion structure, and a transformer station must be had in this case not have stand-by heat switch to use, therefore can not use conventional backup auto-activating device, must adopt region backup auto-activating device.
If be connected by series-fed structure between Liang Ge 220kV transformer station, region backup auto-activating device can also be embodied as middle statements based on collusion transformer station and restore electricity.Under the operational mode of Fig. 2, transformer station's dead electricity if 110kV acts in collusion to make each other's confessions, such as AB line fault causes 110kV statements based on collusion transformer station B dead electricity, then region prepared auto restart action, tripping B01, close stand-by heat switch B02, and for example CD line fault causes 110kV statements based on collusion transformer station C dead electricity, then region prepared auto restart action, tripping C02, close stand-by heat switch B02.Under the operational mode of Fig. 3, transformer station's dead electricity if 110kV acts in collusion to make each other's confessions, such as BC line fault causes 110kV statements based on collusion transformer station B dead electricity, then region prepared auto restart action, tripping B02, close stand-by heat switch A02, and for example CD line fault causes the equal dead electricity of 110kV statements based on collusion transformer station B, C, then region prepared auto restart action, tripping C02, close stand-by heat switch A02.
To sum up, the 110kV that region of the present utility model backup auto-activating device can be embodied as the 110kV dead electricity bus of 220kV transformer station or dead electricity transformer station of acting in collusion to make each other's confessions restores electricity, and can the various operational modes of adaptive system.
Above embodiment is only and technological thought of the present utility model is described; protection range of the present utility model can not be limited with this; every technological thought according to the utility model proposes, any change that technical scheme basis is done, all falls within the utility model protection range.

Claims (1)

1. a region backup auto-activating device, it is characterized in that: described region backup auto-activating device comprises a region prepared auto restart logic discrimination device and two or multiple stage acquisition execution unit, in electric power system, an acquisition execution unit is installed by each transformer station, select arbitrary transformer station in electric power system that a region prepared auto restart logic discrimination device is installed, all acquisition execution units are connected and mutual real time information with region prepared auto restart logic discrimination device by Networks of Fiber Communications, acquisition execution unit gather place transformer station state information and on give region prepared auto restart logic discrimination device, breaker tripping and closing result is also issued to the actual execution of acquisition execution unit of corresponding transformer station by the differentiation of prepared auto restart logic discrimination device feasible region, region prepared auto restart strategy.
CN201420562846.XU 2014-09-26 2014-09-26 A kind of region backup auto-activating device Active CN204156594U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106549484A (en) * 2015-09-17 2017-03-29 化晨冰 Low-voltage platform area low-voltage power supply standby power throw-in device
CN109460320A (en) * 2018-11-02 2019-03-12 南京南瑞继保电气有限公司 A kind of backup and reduction method for automation of transformation substations equipment
CN109842204A (en) * 2019-04-11 2019-06-04 国网江苏省电力有限公司镇江供电分公司 Stand-by heat line electricity source based on optical-fibre channel controls in-put of spare power supply method
CN110165658A (en) * 2019-04-11 2019-08-23 国网江苏省电力有限公司镇江供电分公司 Optical-fibre channel stand-by heat route in-put of spare power supply method based on main transformer control

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106549484A (en) * 2015-09-17 2017-03-29 化晨冰 Low-voltage platform area low-voltage power supply standby power throw-in device
CN109460320A (en) * 2018-11-02 2019-03-12 南京南瑞继保电气有限公司 A kind of backup and reduction method for automation of transformation substations equipment
CN109842204A (en) * 2019-04-11 2019-06-04 国网江苏省电力有限公司镇江供电分公司 Stand-by heat line electricity source based on optical-fibre channel controls in-put of spare power supply method
CN110165658A (en) * 2019-04-11 2019-08-23 国网江苏省电力有限公司镇江供电分公司 Optical-fibre channel stand-by heat route in-put of spare power supply method based on main transformer control
CN109842204B (en) * 2019-04-11 2021-06-29 国网江苏省电力有限公司镇江供电分公司 Method for controlling standby power supply to be switched on at power supply side of hot standby circuit based on optical fiber channel

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