CN102270881A - Reconfigurable feeder terminal system - Google Patents
Reconfigurable feeder terminal system Download PDFInfo
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- CN102270881A CN102270881A CN2011102148245A CN201110214824A CN102270881A CN 102270881 A CN102270881 A CN 102270881A CN 2011102148245 A CN2011102148245 A CN 2011102148245A CN 201110214824 A CN201110214824 A CN 201110214824A CN 102270881 A CN102270881 A CN 102270881A
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Abstract
The invention discloses a reconfigurable feeder terminal system which comprises a plurality of feeder modules of the same structure, wherein each feeder module controls a corresponding circuit breaker; the feeder modules are grouped according to different line sections, and each group comprises a group leader feeder module and a plurality of member feeder module; in each group, any one feeder module can serve as a group leader feeder module; the group leader feeder module receives feeder information of the individual member feeder modules in each group; the group leader feeder modules of the individual groups are communicated with one another; and each feed module comprises a control unit, and a real-time measurement unit, a storage unit containing protection limit storage parts, a logical calculation unit containing load calculation parts and a communication unit, which are connected with the control unit. Based on the group leader management control mode, the system can be used for controlling the on/off of the circuit breakers on the line sections according to the real-time measurement parameters, achieving the effects of rapid fault isolation as well as automatic reconfiguration of a distribution network system, and shortening the time of restoring power supply to lines in non-fault sections.
Description
Technical field
The present invention relates to system for distribution network of power monitoring management technical field, particularly a kind of have the reconfigurable line feed terminals of an electric power networks system.
Background technology
Feeder automation terminal unit FTU (Feeder Terminal Unit) is the nucleus equipment of feed line automatization system, be used to realize the power distribution network monitoring, it is the interface section of feed line automatization system and primary equipment-panel switches, itself and feeder line master station communication, the data that provide distribution system operation control and administrative institute to need, carry out the regulating and controlling order that main website provides, to realize every function of feeder automation to controller switching equipment.
The general GPRS that adopts combines with INTERNET in the system of traditional F TU multiple terminals, communicates with work station, and the daemon software of work station is distinguished on-line monitoring to each terminal in the system.But in the less remote districts of terminal and transformer station, at first each terminal is far away from the control centre, goes on site fault clearing etc. very inconvenient, and operation does not have flexibility; In case secondly break down on certain bar part of path, user under the faulty section on other circuit of part of path also will face power failure, power supply is that transformer station can not obtain maximization, the most effective utilization simultaneously, and the electric power resource waste and the loss that cause because of power failure have improved the cost of electric power system greatly.If can realize the automatic reconfiguration of line feed terminals system, will reduce the cost of line upkeep greatly, improve electrical network utilance and power supply reliability.
Summary of the invention
The invention provides a kind of reconfigurable feed line automatization terminal system, it is by dividing into groups to a plurality of terminal modules in the same system, group leader is set between many pack modules to be controlled member's module, the group leader's of many pack modules intercommunication improves the utilance of electrical network to reach the purpose of system reconfiguration simultaneously.
For achieving the above object, the scheme that the present invention takes is: a kind of reconfigurable feed line automatization terminal system comprises a plurality of identical feeder line modules, circuit breaker of the corresponding control of each feeder line module; A plurality of feeder line modules comprise group leader's feeder line module and a plurality of member's feeder line module by different part of path groupings in each group; In each group, any one feeder line module all can be used as group leader's feeder line module; Group leader's feeder line module receive each member's feeder line module in this group feeder line information; The intercommunication of group leader's feeder line module of a plurality of groups;
Each feeder line module comprises control unit, and the real-time measuring unit, memory cell, arithmetic logic unit and the communication unit that are connected with control unit; Comprise protection limit value storage area in the memory cell; Arithmetic logic unit comprises the load arithmetic section;
In each feeder line module, measuring unit is measured the operational factor of respective circuit breakers in real time in real time, and operational factor is transferred to control unit; Control unit is made comparisons the operational factor that receives and the protection limit value in the memory cell, under comparative result is transferred to by communication unit in the control unit of group leader's feeder line module of part of path; Group leader's feeder line module is judged guilty culprit according to the comparative result that receives;
Then, group leader's feeder line module makes stoppage circuit breaker cut-off by communication unit corresponding member's feeder line module output order in group; Export the instruction of circuit breaker locking simultaneously to other member's feeder line module; The control unit of each member's feeder line module is finished corresponding operating according to the instruction that receives in the group;
When the stoppage circuit breaker breaking course finishes, group leader's feeder line module of each part of path communicates; Be in the part of path of power failure state, any is in its group leader's feeder line module and other group leader's feeder line module on the part of path of normal condition to carry out trip information mutual, and the load calculating section by arithmetic logic unit calculates the part of path and the total load on the normal line highway section of power failure state, and judges the overload situations that total load can or can not cause to be changeed after powering;
Can not transship after changeing power supply as judged result,, send close command, make breaker closing between two part of paths to corresponding member's feeder line module then by corresponding group leader's feeder line module; This moment, the dead electricity part of path restored electricity, and reconstruct is finished;
After changeing power supply, can cause overload as judged result, then be in the part of path of power failure state, the part of path of selecting before its group leader's feeder line module is abandoned, reselect other normal line highway section, load calculating, overload is judged, can change power supply for it until selected part of path, change at last, make all non-fault line sections all restore electricity for operation.
Among the present invention, described a plurality of being more than 1, in the practical application, because the circuit breaker quantity in the system is more, also just need the more feeder line module of respective numbers, so the form with grouping comes system is controlled, the method for decentralized control improves greatly than the method efficient of the unified control in backstage, and the time that non-faulty section circuit restores electricity has been shortened in maximization.
As a kind of improvement, described each feeder line module also comprises the cellphone subscriber that can carry out information interaction with communication unit.Information interaction between cellphone subscriber and the controller comprises: mobile phone is set or is read the protection limit value in the protection limit value setting module by controller, promptly sends the remote signalling amount; Mobile phone sends circuit breaker disjunction or closed instruction to controller, promptly sends the remote control amount; Controller receives instruction back output controlled quentity controlled variable, corresponding circuit breaker is cut-off or closure.Among the present invention, can comprise more than 1 with the cellphone subscriber of the control unit swap data of each feeder line module, 1 advanced level user and a plurality of domestic consumer are wherein arranged, domestic consumer can Query Information and reception information, but can not revise and control, the user gradation information storage with memory that control module links to each other in; The modification user instruction that control unit can send according to advanced level user's mobile phone end of receiving is to the change of making amendment of cellphone subscriber's authority.
As a kind of improvement, described each feeder line module also comprises the keyboard input unit, and the user can set the protection limit value in the protection limit value setup unit by the keyboard input unit.Mainly be to be used for staff's operation to the feeder line module at the scene the time.
As a kind of improvement, described each feeder line module also comprises display unit, and display unit connects control unit; The display unit data presented comprises the protection limit value partial data in the memory cell, and the real time execution parameter of measuring unit measurement in real time.
Preferably, the control unit in described each feeder line module, memory cell, arithmetic logic unit realize by an integrated chip.Fast at FTU device picking rate, data processing amount is big, the algorithm complexity, the real-time height, characteristics such as it is frequent to communicate by letter, the preferred integrated chip of the present invention is a single chip computer AT 91RM9200 processor of the prior art, it is employed to be the ARM9TDMI processor cores, it comprises 16 Thumb instruction set, using this instruction set can obtain 32 with 16 overhead, to have a volume little, low-power consumption, low-cost, high-performance, support Thumb (16)/two instruction set of ARM (32), a large amount of registers that use, characteristics such as addressing system is simple flexibly, and the quick-acting rates of instruction execution are faster.In addition, integrated chip also can adopt other chip microcontroller, and interrelated logic computing and control program can be finished according to existing ripe programming technique, and the upgrading of program also can realize by online programmable controller of the prior art.Also can utilize the memory of the outside expansion of single-chip microcomputer to realize about memory cell.
Preferably, described communication unit is the GPRS communication unit, can realize between cellphone subscriber and each the feeder line module by existing ripe GPRS technology, and the information interaction between each feeder line module.The preferred single chip computer AT 91RM9200 processor of the present invention inside is integrated with the GPRS functional interface, by disposing the SMS module or the circuit of existing GPRS communication, directly is connected reception and the transmission of finishing data with the corresponding function interface of single-chip microcomputer.
Output for the remote control amount, the present invention realizes by relay module of the prior art, relay module connects the remote control amount output port of control unit, and the height of port impulse level can determine the break-make of relay, thus control circuit breaker closed or cut-off.Preferably, the relay module that the present invention adopts has anti-jump function, promptly comprises anti-trip relay in the relay module.
Preferably, described real-time measuring unit comprises voltage measurement part, current measurement part, respectively the three-phase voltage and the electric current of respective circuit breakers place circuit is measured.Control unit calculates active power and reactive power after receiving measurement data, and is kept in the memory
Restructural feeder system of the present invention, on the basis of point-to-point communication, when the structure by group leader's managing system had realized that distribution network breaks down, the timely reconstruct and the Fault Isolation of distribution network had shortened the time that restores electricity, and have optimized powering mode.Utilize the GPRS communication module to realize that remote terminal utilizes SMS to carry out the function of " four is distant " simultaneously,, greatly reduce cost, improved efficient for small number of terminals; In the less remote districts of feed line automatization terminal, can replace the effect at background monitoring center fully, and be equivalent to a plurality of Surveillance center, a convenient line work about electric power personnel flexible operating has been saved the resource and the manpower that drop into greatly, has improved efficient.
Description of drawings
Figure 1 shows that system control logic schematic diagram of the present invention;
Figure 2 shows that a kind of application examples of system of the present invention control;
Figure 3 shows that the example structure schematic diagram of each feeder line module among the present invention.
Embodiment
For content of the present invention is become apparent more, now be described further with embodiment in conjunction with the accompanying drawings.
In conjunction with Fig. 1, the present invention includes a plurality of identical feeder line modules, circuit breaker of the corresponding control of each feeder line module; A plurality of feeder line modules comprise group leader's feeder line module and a plurality of member's feeder line module by different part of path groupings in each group; In each group, any one feeder line module all can be used as group leader's feeder line module; Group leader's feeder line module receive each member's feeder line module in this group feeder line information; The intercommunication of group leader's feeder line module of a plurality of groups;
Figure 2 shows that a kind of application examples of the present invention, wherein SA, SB, SC, SD are respectively transformer station, BK1-BK12 is a circuit breaker, T1-T8 is a part of path, each circuit breaker all correspondence is provided with an identical feeder line module, a plurality of feeder line modules are divided into 8 groups by part of path, and the group leader's feeder line module in every group can be selected in feeder line module working properly at random, its be member's feeder line module.
Permanent phase fault takes place in the outlet in the SD of transformer station, and the outlet circuit breaker trip in it detects voltage with the corresponding feeder line module of circuit breaker BK2, BK3, BK4, BK6 and BK7 and surpasses the protection limit value and be decompression, then starts decompression counter separately.Through after a while, the outlet circuit breaker can overlap in the transformer station, unsuccessful reclosing, tripping operation once more.The corresponding feeder line module of BK2, BK3, BK4, BK6 and BK7 detects decompression once more, each decompression counter counts the decompression number of times, reach the value " 2 times " of setting when decompression counter cumulative number, then send instruction to corresponding member's feeder line module by corresponding group leader's feeder line module, start the tripping respective circuit breakers, then the fault point is isolated.The decompression counter that adopts in the present embodiment is for realizing that by software programming specific procedure can utilize existing ripe software programming technique to finish.
Determine to close behind the BK1, BK1 can overload, and BK1 closes a floodgate, and recovers the T1 power supply.Group leader T5 and group leader's T6 exchange message are determined not have the parts overload after BK10 closes by load calculating, and the BK10 that closes then recovers the T5 power supply.
Since the BK3 separating brake, and do not detect the fault overcurrent, so T3 determines fault BK3 higher level, can not seek stand-by power supply from SW3.T2 still is in power failure state, so T3 can not seek stand-by power supply from BK4.So, T3 has only from T5 searching stand-by power supply.Group leader T3 and group leader's T5 exchange message, after definite T5 had enough commentaries on classics energy supply power, the BK6 that closes recovered the T3 power supply.
At this moment, T2 has a plurality of stand-by power supplies, does not set priority in advance.Because group leader T2 is at first with group leader's T4 exchange message, after definite T4 had enough commentaries on classics energy supply power, the BK5 that closes recovered the T2 power supply.After definite BK7 closes, there is not parts meeting overload, the BK7 that closes recovers the T8 power supply.So far, all non-fault line Duan Douyi restore electricity.
After fault was got rid of, transformer station's inner breaker and the SW3(different electrical power of closing can operation with closed ring), make C of transformer station and the D of transformer station cyclization in short-term operation, simultaneously the start-up system logic of " recovering normal ".
Group leader T5 and group leader's T6 exchange message are agreed separately BK10, and BK10 separating brake, T3 and T5 recover to be powered by normal power source.) the BK4 combined floodgate, B of transformer station and the D of transformer station cyclization in short-term operation.BK5 separating brake, T2 and T8 recover to be powered by normal power source.) the BK2 combined floodgate, A of transformer station and the D of transformer station cyclization in short-term operation.BK1 separating brake, T1 recover to be powered by normal power source.So far, all controllers and control module return to normal operation mode in the system, and whole system returns to normal operating condition fully.
Be illustrated in figure 3 as a kind of specific embodiment of each feeder line module of the present invention, comprising: control unit, real-time measuring unit, memory cell, arithmetic logic unit, communication unit, display unit, keyboard input unit and power supply, wherein control unit, arithmetic logic unit and a part of memory cell, realize by existing chip single chip computer AT 91RM9200 processor, memory cell also comprises the SDRAM and the flash memory of expansion, and the flash memory is used to store the image file of kernel and RAMDISK.Upgrading is upgraded for the software code in the single-chip microcomputer, and present embodiment adopts existing programmable logic device to realize.Measuring unit comprises remote measurement amount test section, remote signalling amount test section in real time, and remote measurement amount test section is used to detect voltage, electric current, active power and the reactive power on the triple line, specifically can finish by existing survey tool; Remote signalling amount test section is used to detect the opening and closing state of respective circuit breakers, also can finish by existing survey tool.
Present embodiment is realized by existing relay module with anti-jump function for the output of remote control amount, the remote control amount output port of single-chip microcomputer is isolated by photoelectricity and is connected relay module, relay module connects circuit breaker, and single-chip microcomputer is controlled the combined floodgate or the separating brake of circuit breaker by the break-make of control relay.
In the present embodiment, communication unit is the GPRS communication unit, is used for communicating by letter of each feeder line module and cellphone subscriber, and the communication between each feeder line module.Because selected single-chip microcomputer inside is integrated with special GPRS interface, so can adopt the module product of corresponding function in the prior art to finish the transmission and the reception of information.Related protocol can be formulated according to the prior protocols rule, and realizes with form of software.
When using, by an advanced level user among the software setting cellphone subscriber, all the other are domestic consumer; Domestic consumer can Query Information and reception information, and can not revise and control; Each cellphone subscriber all can inquire about associated rights information, and wherein advanced level user can make amendment to authority information.When the control unit of feeder line module is received from command information that the cellphone subscriber sends through the GPRS module, the resolving information content, as what receive is query statement, then corresponding data is returned back among the cellphone subscriber by the GPRS module; As what receive is that the circuit-breaker switching on-off that sends of senior cellphone subscriber or protection are thrown and moved back instruction, and then control unit is controlled corresponding circuit-breaker switching on-off or protection by relay module and thrown and move back, and the state information after will moving is back among the cellphone subscriber.
Feeder line module of the present invention also be provided with to the time function, but be specially the clock module that setting register system time and time can make amendment by control unit, can send the instruction of inquiry or check and correction modification system time by mobile phone, to the time revise system time be control unit according to the time parameter that the command information of receiving carries, parameter correlation time of clock module is reset.Clock module can adopt real time clock device of the prior art, also can use clock module circuit ripe in the prior art.In order to prevent that locking apparatus is when protection is moved; can effectively accurately and timely send information; the present invention is set in a sub-value of some setup time transmission three-phase currents of every day, and it is unusual to send the loop if the cellphone subscriber of the information of reception can not receive information in the short period after the corresponding moment of every day to mobile phone.
Power supply adopts switchette power insert of the prior art; Display unit adopts existing big screen LCD, and full-localized demonstration can show primary system figure, measurement data, protection information, fault waveform etc., and liquid crystal low power operation mode has prolonged LCD and used useful life; The existing matured product of keyboard input unit utilization is connected with single-chip microcomputer the corresponding interface.
Concrete case study on implementation only is a preferable case study on implementation of the present invention described in the present invention, is not to be used for limiting practical range of the present invention.Be that all equivalences of doing according to the content of the present patent application claim change and modification, all should be as technology category of the present invention.
Claims (8)
1. a reconfigurable line feed terminals system is characterized in that: comprise a plurality of identical feeder line modules, circuit breaker of the corresponding control of each feeder line module; A plurality of feeder line modules comprise group leader's feeder line module and a plurality of member's feeder line module by different part of path groupings in each group; In each group, any one feeder line module all can be used as group leader's feeder line module; Group leader's feeder line module receive each member's feeder line module in this group feeder line information; The intercommunication of group leader's feeder line module of a plurality of groups;
Each feeder line module comprises control unit, and the real-time measuring unit, memory cell, arithmetic logic unit and the communication unit that are connected with control unit; Comprise protection limit value storage area in the memory cell; Arithmetic logic unit comprises the load arithmetic section;
In each feeder line module, measuring unit is measured the operational factor of respective circuit breakers in real time in real time, and operational factor is transferred to control unit; Control unit is made comparisons the protection limit value of protection limit value storage area in the operational factor that receives and the memory cell, under comparative result is transferred to by communication unit in the control unit of group leader's feeder line module of part of path; Group leader's feeder line module is judged guilty culprit according to the comparative result that receives;
Then, group leader's feeder line module makes stoppage circuit breaker cut-off by communication unit corresponding member's feeder line module output order in group; Export the instruction of circuit breaker locking simultaneously to other member's feeder line module; The control unit of each member's feeder line module is finished corresponding operating according to the instruction that receives in the group;
When the stoppage circuit breaker breaking course finishes, group leader's feeder line module of each part of path communicates; Be in the part of path of power failure state, any is in its group leader's feeder line module and other group leader's feeder line module on the part of path of normal condition to carry out trip information mutual, and the load arithmetic section by arithmetic logic unit, calculate the part of path of power failure state and the total load on the normal line highway section, and judge the overload situations that total load can or can not cause to be changeed after powering;
Can not transship after changeing power supply as judged result,, send close command, make breaker closing between two part of paths to corresponding member's feeder line module then by corresponding group leader's feeder line module; This moment, the dead electricity part of path restored electricity, and reconstruct is finished;
After changeing power supply, can cause overload as judged result, then be in the part of path of power failure state, the part of path of selecting before its group leader's feeder line module is abandoned, reselect other normal line highway section, load computing, overload judged, can change power supply for it until selected part of path, change at last for operation, making all non-fault line sections all finish changes the service restoration power supply.
2. a kind of reconfigurable line feed terminals according to claim 1 system is characterized in that described each feeder line module also comprises the cellphone subscriber that can carry out information interaction by communication unit and control unit.
3. a kind of reconfigurable line feed terminals according to claim 1 system is characterized in that described each feeder line module also comprises the keyboard input unit, and the user can partly protect limit value to set to the protection limit value in the memory cell by the keyboard input unit.
4. a kind of reconfigurable line feed terminals according to claim 1 system is characterized in that described each feeder line module also comprises display unit, and display unit connects control unit; The display unit data presented comprises the protection limit value partial data in the memory cell, and the real time execution parameter of measuring unit measurement in real time.
5. according to each described a kind of reconfigurable line feed terminals system of claim 1 to 4, it is characterized in that the control unit in described each feeder line module, memory cell, arithmetic logic unit realize by an integrated chip.
6. a kind of reconfigurable line feed terminals according to claim 5 system is characterized in that described integrated chip is single chip computer AT 91RM9200.
7. according to each described a kind of reconfigurable line feed terminals system of claim 1 to 4, it is characterized in that the communication unit of described each feeder line module is the GPRS communication unit.
8. a kind of reconfigurable line feed terminals according to claim 1 system is characterized in that described real-time measuring unit comprises voltage measurement part, current measurement part, respectively the three-phase voltage and the electric current of respective circuit breakers place circuit is measured.
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| CN2011102148245A CN102270881A (en) | 2011-07-29 | 2011-07-29 | Reconfigurable feeder terminal system |
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| CN2011102148245A CN102270881A (en) | 2011-07-29 | 2011-07-29 | Reconfigurable feeder terminal system |
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| CN102710022A (en) * | 2012-06-13 | 2012-10-03 | 南京软核科技有限公司 | Power distribution network feeder protection and reconfiguration scheme based on intelligent feeder terminal unit |
| CN107025524A (en) * | 2016-12-30 | 2017-08-08 | 国电南瑞科技股份有限公司 | Consider the apparatus overload aid decision-making method of load power supply reliability requirement |
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| CN107025524A (en) * | 2016-12-30 | 2017-08-08 | 国电南瑞科技股份有限公司 | Consider the apparatus overload aid decision-making method of load power supply reliability requirement |
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Application publication date: 20111207 |