CN101997340B - Intelligent feeder line automation method in autonomous self-healing distribution network - Google Patents
Intelligent feeder line automation method in autonomous self-healing distribution network Download PDFInfo
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Abstract
The invention relates to an intelligent feeder line automation method in an autonomous self-healing distribution network, comprising the following steps that the topological structure chart of the distribution network is stored to each intelligent terminal, and the intelligent terminals generate a self-healing strategy base according to the topological chart; a protector carries out wireless communication with the intelligent terminals, and the intelligent terminals also carry out the wireless communication with each other; the protector and the intelligent terminals judge the fault to be a temporary fault or a permanent fault according to a fault signal obtained by communication, if the fault is the temporary fault, the protector closes a transformer substation outlet switch, and if the fault is the permanent fault, the protector recloses the transformer substation outlet switch twice, and the intelligent terminals select a self-healing strategy from the self-healing strategy base to carry out fault self-healing processing. In the intelligent distribution network, each intelligent terminal comprises a storage module, a strategy base generating module, a communication module, a first switch control module and a master control module, and the protector comprises a communication module and a second switch control module. The invention can process faults on the spot and improve the system reliability.
Description
Technical field
The present invention relates to the power industry distribution system, be specifically related to the method for intelligent feeder automation in a kind of power distribution network.
Background technology
In the distribution network system, safety is the top priority of all operational management work often, fact proved, safe and reliable is that the power distribution network enterprise operation is safeguarded the topmost purpose of input.As shown in Figure 1, distribution network automated can the realization through pattern shown in Figure 1 managed.This mode is specially: be arranged in on-the-spot detection and control terminal through use; Gather the parameter of distribution line; Through certain communication mode information is sent to main station system then; The instruction of output control corresponding was back to detection and control terminal with the former road of this control command then, and then removes the primary equipment of the electric process of drive controlling after main station system disposed.
Feeder automation is meant and utilizes computer technology and data communication technology supervision and be controlled at feeder line operating condition between electric substation's feeder switch and the subscriber's meter meter that this method mainly comprises: the data under the normal operating condition detect and control automatically; Fault state monitoring, isolate automatically and restore electricity.As shown in Figure 2, Fig. 2 is a kind of electrical power distribution automatization system structural representation.Can know by Fig. 2; The realization of power distribution automation; Be to gather the device parameter (for example the remote signalling displacement of switch, remote measurement amount current/voltage etc.) on the distribution line through FTU (Feeder Terminal Unit)/DTU (Distribution Terminal Unit)/TTU detection and control terminals such as (Transformer Terminal Unit); Again this device parameter is sent to main station system through wired or wireless communication mode; Main station system is handled the instruction of back output control corresponding, then the former road of this control command is back to detection and control terminal, is directly controlled a switch of distribution line etc. according to this control command by detection and control terminal.The essence of this method is exactly that the distribution line that is dispersed in each department is in a large number carried out parameter acquisition, respectively disperses end points through result being returned after focusing on again.
There are two problems at least in such processing mode: 1) security risk concentrates on main station system.Because distribution line is very various, under or the situation that the distributor point transformation task is many many when the fault point, main station system often can't be handled.In case main station system has been handled not or main station system goes wrong, promptly cause whole power distribution automation paralysis.2) signalling channel pressure is big, is easy to generate the congestion information situation, and more obvious for adopting radio communication especially, channel is in a single day obstructed, and power distribution automation just can be paralysed.
Because current troubleshooting mode is the single central controlled tupe of main website; Be that main website starts the distribution fault processing system behind the signal of receiving transformer station's outlet switch protection action and switch trip, the distribution fault processing system carries out analyzing and processing according to the information of sending here on the terminal.
This traditional troubleshooting mode generally comprises four elements, and be specially: 1) communication channel is good; 2) the master station computer software and hardware system is stable; 3) troubleshooting is based on distribution network topology structure on the computer with on-the-spot consistent; 4) detection and control terminal such as on-the-spot all FTU and communicator operation are normally.Because this four elements often can not satisfy simultaneously; Particularly especially like this for large scale system; So also caused the automatic processing capacity of distribution fault of most systems after operation a period of time, just to lose efficacy, the fault processing system that has simultaneously needs manual intervention especially.
Based on above-mentioned analysis, the central controlled processing mode of this main website exists its defective, and fault can't be handled on the spot, and depends on main website and communication system makes the reliability of system weaken greatly.
Summary of the invention
The objective of the invention is to, propose the method for intelligent feeder automation in a kind of power distribution network, make the terminal self-healing function of power distribution network realize handling on the spot, need not to rely on main station system, improve the reliability of system.
The method of intelligent feeder automation in the power distribution network that the present invention proposes, power distribution network comprises several protective devices and several intelligent terminals, wherein, this power distribution network is the formula loop network system of handing in hand; The method of intelligent feeder automation specifically comprises in this power distribution network:
Step S1 is stored in the topology diagram of power distribution network in each intelligent terminal; Said intelligent terminal generates the Self healing Strategy storehouse according to said topology diagram;
Step S2, said protective device and said intelligent terminal carry out wireless telecommunications, also carry out wireless telecommunications between each intelligent terminal;
Step S3, the fault-signal that said protective device and said intelligent terminal obtain according to communication confirm that fault type is transient fault or permanent fault, if transient fault then goes out wiretap by said protective device with transformer station and closes; If permanent fault then goes out wiretap by said protective device with transformer station and overlaps twice, and from said Self healing Strategy storehouse, select Self healing Strategy to carry out fault self-recovery by said intelligent terminal and handle;
Wherein, said Self healing Strategy comprises:
If malfunctioning node is between mains side and interconnection switch, then said intelligent terminal this interconnection switch that closes;
To receiving fault-signal and leaving the nearest intelligent terminal of said interconnection switch, then said intelligent terminal cuts the superior and the subordinate's on-load switch of malfunctioning node, and will close except that all on-load switches said the superior and the subordinate on-load switch.
The intelligent power distribution net that the present invention proposes, this power distribution network comprise several protective devices and several intelligent terminals; Wherein, this power distribution network is the formula loop network system of handing in hand;
Comprise the memory module that is used for the memory topology structure chart in the said intelligent terminal, be used for according to said topology diagram generate the Self healing Strategy storehouse the policy library generation module, be used to carry out wireless telecommunications communication module, be used for on-load switch and interconnection switch are carried out first switch control module of closed control and be used for main control module that other modules are controlled and managed;
Said protective device comprises and is used to carry out the communication module of wireless telecommunications and is used for that transformer station is gone out wiretap carry out the closed second switch control module of controlling;
Said memory module is stored the topology diagram of power distribution network; Said policy library generation module generates the Self healing Strategy storehouse according to said topology diagram;
Carry out wireless telecommunications through said communication module between said protective device and the said intelligent terminal, also carry out wireless telecommunications between each intelligent terminal through said communication module;
The fault-signal that said second switch control module and said main control module obtain according to communication confirms that fault type is transient fault or permanent fault, closes if transient fault then goes out wiretap by said second switch control module with transformer station; Overlap twice if permanent fault then goes out wiretap by said second switch control module with transformer station, and from said Self healing Strategy storehouse, select Self healing Strategy to carry out fault self-recovery by said main control module and handle;
Wherein, said Self healing Strategy comprises:
If malfunctioning node is between mains side and interconnection switch, then said main control module sends first control command to said first switch control module, by this first switch control module this interconnection switch that closes;
To receiving fault-signal and leaving the nearest intelligent terminal of said interconnection switch; Then said main control module sends second control command to said first switch control module; Cut by the superior and the subordinate's on-load switch of this first switch control module, and will close except that other on-load switches said the superior and the subordinate on-load switch with malfunctioning node.
Technical scheme of the present invention, intelligent terminal generates the Self healing Strategy storehouse according to topology diagram, by carrying out wireless telecommunications between protective device and the intelligent terminal, also carries out wireless telecommunications between each intelligent terminal then; Determine whether to receive fault-signal according to the communication result again; And handle according to the different faults situation; Intelligent terminal selects Self healing Strategy to carry out the fault self-recovery processing from the Self healing Strategy storehouse when permanent fault takes place; Fault in the power distribution network is in time recovered, and technical scheme of the present invention need not to rely on main station system, can improve the reliability of system.
Description of drawings
Fig. 1 is distribution network automated observing and controlling processing procedure sketch map;
Fig. 2 is a kind of electrical power distribution automatization system structural representation;
Fig. 3 is the method flow sketch map of intelligent feeder automation in the power distribution network;
Fig. 4 is the two power supplys loop network system sketch mapes of handing in hand;
Fig. 5 is the three power supplys loop network system sketch mapes of handing in hand;
Fig. 6 is the four power supplys loop network system sketch mapes of handing in hand;
Fig. 7 forms sketch map for the intelligent power distribution net.
Embodiment
Embodiment 1:
Present embodiment proposes the method for intelligent feeder automation in a kind of power distribution network, and power distribution network comprises several protective devices and several intelligent terminals, and wherein, this power distribution network is the formula loop network system of handing in hand.As shown in Figure 3, the method for intelligent feeder automation specifically comprises in this power distribution network:
Step S1 is stored in the topology diagram of power distribution network in each intelligent terminal; Intelligent terminal generates the Self healing Strategy storehouse according to topology diagram.Can be before step S1; Represent switch, circuit and/or power supply in the power distribution network respectively with some element figures; According to the topology diagram of these element figures drafting power distribution networks, wherein, each element figure all comprises number information or the sign of representing correspondence position.Element figure can adopt Visio software to draw, and uses the method for " playing with building blocks " that it is combined again, becomes complete power distribution network topology diagram.After having stored the topology diagram of power distribution network in the intelligent terminal, can each element figure obtains the position relation of each equipment in the whole power distribution network and the relation of other equipment of being connected through discerning.Promptly, the network topology relation is split as the logical relation table of being made up of number information one by one according to topology diagram.
Intelligent terminal generates the Self healing Strategy storehouse according to this topology diagram then, in this storehouse, comprises corresponding Self healing Strategy and handles to carry out fault self-recovery.Wherein, Self healing Strategy comprises: 1) if malfunctioning node between mains side and interconnection switch, intelligent terminal this interconnection switch that closes then; 2) to receiving fault-signal and leaving the nearest intelligent terminal of interconnection switch, then intelligent terminal cuts the superior and the subordinate's on-load switch of malfunctioning node, and other on-load switches are closed.Use above-mentioned Self healing Strategy according to different topological structures; Though the rule of Self healing Strategy as stated; But for each intelligent terminal; Topology diagram is different, and the adjoining interconnection switch of this intelligent terminal self-position is also different with mains side, is appreciated that the Self healing Strategy difference into the intelligent terminal application of diverse location.
Step S2, protective device and intelligent terminal carry out wireless telecommunications, also carry out wireless telecommunications between each intelligent terminal.The purpose of carrying out wireless telecommunications is in order to carry out information interaction, and each several part can determine whether to receive fault-signal in the power distribution network when breaking down, and then fault location, fault is isolated automatically and shift power supply automatically.The process of wireless telecommunications realizes for adopting dual mode: 1) adopt the mode of GPRS or 3G to carry out wireless telecommunications; 2) adopt and to comprise that the wireless private network mode of MCWILL or WIMAX mode carries out wireless telecommunications.
Step S3, the fault-signal that protective device and intelligent terminal obtain according to communication confirm that fault type is transient fault or permanent fault, closes if transient fault then goes out wiretap by protective device with transformer station; Overlap twice if permanent fault then goes out wiretap by protective device with transformer station, and select Self healing Strategy to carry out fault self-recovery by intelligent terminal and handle.
Wherein, transient fault is because the reason of external force (like wind) make the part of circuit the phenomenon of provisional fault such as short circuit occur, but it is very short to hold time, and like 0.1s, has spent this time and has recovered normal again.For this situation, only need intelligent terminal short time of time-delay when judging over current fault to get final product, for example can get 0.2S is delay value.Permanent fault representes that expendable fault appears in intelligent terminal; This fault can be maintained the statusquo always; The process of judging only needs ceaselessly to judge in a continuous time period such as the 0.3s, if keeping out of order conclusion always, can think permanent fault.
Below respectively with power distribution network typical case, two the most general power supplys looped network, three power supplys looped network and the four power supplys looped network of handing in hand of handing in hand of handing in hand be example; Set forth the application process of the method for intelligent feeder automation, fully explain the process how intelligent terminal realizes that self-healing is handled.
As shown in Figure 4, Fig. 4 is that the two power supplys looped network of handing in hand is formed sketch map.DL1 and DL2 represent that respectively 2 transformer stations go out wiretap, and L1-L3, L5 represent 4 on-load switches, and L4 representes interconnection switch, and FTU1-FTU5 representes 5 intelligent terminals respectively, and #1-#6 representes 6 nodes.
All store the topological diagram of the looped network of Fig. 4 among the intelligent terminal FTU1-FTU5, and formed the tabulation of device logic, such as:
The adjacent interconnection side of address switch numbering mains side is adjacent
#1： L1 DL1 L2
#2： L2 L1 L3
#3： L3 L2 L4
#4： L4 L3 L5
#5： L5 L4 DL2
#6:DL 2L5 power supply 2
Earlier with among Fig. 4 when #3 breaks down, according to Self healing Strategy, processing procedure is following:
1) interconnection switch closes, and promptly intelligent terminal FTU4 closes the L4 switch;
2) can experience power failure and be FTU2 from the nearest intelligent terminal of interconnection switch, thus FTU2 with L2 cut, FTU3 cuts L3.
3) protective device overlaps the DL1 of mains side.
Can reach that fault location, fault are isolated automatically this moment and shift power supply automatically, realize self-healing on the spot.Describe in the face of each node among Fig. 4 down comprehensively, can carry out with reference to above-mentioned #3 processing procedure.
1) if the #1 point has fault:
If closing DL1, transient fault, protective device get final product;
Move if permanent fault, protective device are closed DL1, the action that is about to the DL1 combined floodgate is carried out 2 times again.All FTU do not receive fault-signal during DL1 is overlapped twice, and this moment, FTU1 cut the L1 switch, and FTU4 closes the L4 switch, can reach that fault location, fault are isolated automatically and shift power supply automatically, realize self-healing on the spot.
2) if the #2 point has fault:
If closing DL1, transient fault, protective device get final product;
If permanent fault, protective device is with the DL1 action (2 actions) of closing again.FTU1 receives fault-signal (2 times) during this time; Other FTU do not receive fault-signal; This moment FTU1 with the L1 switch cut, FTU2 with the L2 switch cut, FTU4 closes the L4 switch, DL1 overlaps and can reach that fault location, fault are isolated automatically and shift power supply automatically, realizes self-healing on the spot.
3) if the #3 point has fault:
If closing DL1, transient fault, protective device get final product;
If permanent fault, protective device is with the DL1 action (2 actions) of closing again.FTU1 and FTU2 receive fault-signal (2 times) during this time; Other FTU do not receive fault-signal; This moment FTU2 with the L2 switch cut, FTU3 with the L3 switch cut, FTU4 closes the L4 switch, DL1 overlaps and can reach that fault location, fault are isolated automatically and shift power supply automatically, realizes self-healing on the spot.
4) if the #4 point has fault:
If closing DL1, transient fault, protective device get final product;
If permanent fault, protective device is with the DL1 action (2 actions) of closing again.FTU1, FTU2, FTU3 receive fault-signal (2 times) during this time, and other FTU do not receive fault-signal, and this moment, FTU3 cut the L3 switch, and DL1 overlaps and can reach that fault location, fault are isolated automatically and shift power supply automatically, realizes self-healing on the spot.
5) if the #5 point has fault:
If transient fault, the DL2 protection overlaps and gets final product;
If permanent fault, DL2 protection overlap action again (2 actions).FTU5 receives fault-signal (2 times) during this time, and other FTU do not receive fault-signal, and this moment, FTU5 cut the L5 switch, and DL2 overlaps and can reach that fault location, fault are isolated automatically and shift power supply automatically, realizes self-healing on the spot.
6) if the #6 point has fault:
If transient fault, the DL2 protection overlaps and gets final product;
If permanent fault, DL2 protection overlap action again (2 actions).All FTU do not receive fault-signal during this time, and this moment, FTU5 cut the L5 switch, and by FTU4 the L4 switch was closed, and can reach that fault location, fault are isolated automatically and shift power supply automatically, realize self-healing on the spot.
As shown in Figure 5, Fig. 5 is that the three power supplys looped network of handing in hand is formed sketch map.DL1-DL3 representes that respectively 3 transformer stations go out wiretap, and L1, L2, L4, L5, L7, L8 represent 6 on-load switches respectively, and L3, L6 represent 2 interconnection switches respectively, and FTU1-FTU8 representes 8 intelligent terminals respectively, and #1-#9 representes 9 nodes.
1) if the #1 point has fault:
If closing DL1, transient fault, protective device get final product;
If permanent fault, protective device is with the DL1 action (2 actions) of closing again.All FTU do not receive fault-signal during this time, and this moment, FTU1 cut the L1 switch, and FTU3 closes the L3 switch, can reach that fault location, fault are isolated automatically and shift power supply automatically, realize self-healing on the spot.
2) if the #2 point has fault:
If closing DL1, transient fault, protective device get final product;
If permanent fault, protective device is with the DL1 action (2 actions) of closing again.FTU1 receives fault-signal (2 times) during this time; Other FTU do not receive fault-signal; This moment FTU1 with the L1 switch cut, FTU2 with the L2 switch cut, FTU3 closes the L3 switch, DL1 overlaps and can reach that fault location, fault are isolated automatically and shift power supply automatically, realizes self-healing on the spot.
3) if the #3 point has fault:
If closing DL1, transient fault, protective device get final product;
If permanent fault, protective device is with the DL1 action (2 actions) of closing again.FTU1 and FTU2 receive fault-signal (2 times) during this time, and other FTU do not receive fault-signal, and this moment, FTU2 cut the L2 switch, and DL1 overlaps and can reach that fault location, fault are isolated automatically and shift power supply automatically, realizes self-healing on the spot.
4) if the #4 point has fault:
If transient fault, the DL2 protection overlaps and gets final product;
If permanent fault, DL2 protection overlap action again (2 actions).All FTU do not receive fault-signal during this time, and this moment, FTU4 cut the L4 switch, and FTU6 closes the L6 switch, can reach that fault location, fault are isolated automatically and shift power supply automatically, realize self-healing on the spot.
5) if the #5 point has fault:
If transient fault, the DL2 protection overlaps and gets final product;
If permanent fault, DL2 protection overlap action again (2 actions).FTU5 receives fault-signal (2 times) during this time; Other FTU do not receive fault-signal; This moment FTU4 with the L4 switch cut, FTU5 with the L5 switch cut, FTU6 closes the L6 switch, DL2 overlaps and can reach that fault location, fault are isolated automatically and shift power supply automatically, realizes self-healing on the spot.
6) if the #6 point has fault:
If transient fault, the DL2 protection overlaps and gets final product;
If permanent fault, DL2 protection overlap action again (2 actions).FTU4 and FTU5 receive fault-signal (2 times) during this time, and other FTU do not receive fault-signal, and this moment, FTU5 cut the L5 switch, and DL2 overlaps and can reach that fault location, fault are isolated automatically and shift power supply automatically, realizes self-healing on the spot.
7) if the #7 point has fault:
If transient fault, the DL3 protection overlaps and gets final product;
If permanent fault, DL3 protection overlap action again (2 actions).All FTU do not receive fault-signal during this time, and this moment, FTU7 cut the L7 switch, and DL3 overlaps and can reach that fault location, fault are isolated automatically and shift power supply automatically, realizes self-healing on the spot.
8) if the #8 point has fault:
If transient fault, the DL3 protection overlaps and gets final product;
If permanent fault, DL3 protection overlap action again (2 actions).FTU8 receives fault-signal (2 times) during this time, and other FTU do not receive fault-signal, and this moment, FTU8 cut the L8 switch, and FTU3 closes the L3 switch, and DL3 overlaps and can reach that fault location, fault are isolated automatically and shift power supply automatically, realizes self-healing on the spot.
9) if the #9 point has fault:
If transient fault, the DL3 protection overlaps and gets final product;
If permanent fault, DL3 protection overlap action again (2 actions).FTU8 receives fault-signal (2 times) during this time, and other FTU do not receive fault-signal, and this moment, FTU8 cut the L8 switch, and FTU6 closes the L6 switch, can reach that fault location, fault are isolated automatically and shift power supply automatically, realizes self-healing on the spot.
As shown in Figure 6, Fig. 6 is that the four power supplys looped network of handing in hand is formed sketch map.DL1-DL4 representes that respectively 4 transformer stations go out wiretap; L1, L3, L4, L6, L7, L9, L10 represent 7 on-load switches respectively; L2, L5, L8 represent 3 interconnection switches respectively, and FTU1-FTU10 representes 10 intelligent terminals respectively, and #1-#10 representes 10 nodes.
1) if the #1 point has fault:
If closing DL1, transient fault, protective device get final product;
If permanent fault, protective device is with the DL1 action (2 actions) of closing again.All FTU do not receive fault-signal during this time, and this moment, FTU1 cut the L1 switch, can the L2 switch be closed or FTU8 closes the L8 switch by FTU2 then, can reach that fault location, fault are isolated automatically and shift power supply automatically, realize self-healing on the spot.
2) if the #2 point has fault:
If closing DL1, transient fault, protective device get final product;
If permanent fault, protective device is with the DL1 action (2 actions) of closing again.FTU1 receives fault-signal (2 times) during this time; Other FTU do not receive fault-signal; This moment FTU1 with the L1 switch cut, FTU7 with the L7 switch cut, FTU8 closes the L8 switch, DL1 overlaps and can reach that fault location, fault are isolated automatically and shift power supply automatically, realizes self-healing on the spot.
3) if the #3 point has fault:
If transient fault, the DL2 protection overlaps and gets final product;
If permanent fault, DL2 protection overlap action again (2 actions).FTU3 receives fault-signal (2 times) during this time; Other FTU do not receive fault-signal; This moment FTU3 with the L3 switch cut, FTU9 with the L9 switch cut, FTU5 closes the L5 switch, DL2 overlaps and can reach that fault location, fault are isolated automatically and shift power supply automatically, realizes self-healing on the spot.
4) if the #4 point has fault:
If transient fault, the DL2 protection overlaps and gets final product;
If permanent fault, DL2 protection overlap action again (2 actions).All FTU do not receive fault-signal during this time, this moment FTU3 with the L3 switch cut, FTU5 closes the L5 switch, can reach that fault location, fault are isolated automatically and shift power supply automatically, realizes self-healing on the spot.
5) if the #5 point has fault:
If transient fault, the DL3 protection overlaps and gets final product;
If permanent fault, DL3 protection overlap action again (2 actions).All FTU do not receive fault-signal during this time, and this moment, FTU4 cut the L4 switch, by FTU8 the L8 switch are closed then or FTU5 closes the L5 switch, can reach that fault location, fault are isolated automatically and shift power supply automatically, realize self-healing on the spot.
6) if the #6 point has fault:
If transient fault, the DL3 protection overlaps and gets final product;
If permanent fault, DL3 protection overlap action again (2 actions).FTU4 receives fault-signal (2 times) during this time, and other FTU do not receive fault-signal, this moment FTU4 with the L4 switch cut, DL1 overlaps and can reach that fault location, fault are isolated automatically and shift power supply automatically, realizes self-healing on the spot.
7) if the #7 point has fault:
If transient fault, the DL2 protection overlaps and gets final product;
If permanent fault, DL2 protection overlap action again (2 actions).FTU3, FTU9, FTU10 receive fault-signal (2 times) during this time, and other FTU do not receive fault-signal, this moment FTU10 with the L10 switch cut, DL2 overlaps and can reach that fault location, fault are isolated automatically and shift power supply automatically, realizes self-healing on the spot.# 8 will supply power and need close DL4.
8) if the #8 point has fault:
If transient fault, the DL2 protection overlaps and gets final product;
If permanent fault, DL2 protection overlap action again (2 actions).FTU3, FTU9, FTU10, FTU6 receive fault-signal (2 times) during this time, and other FTU do not receive fault-signal, this moment FTU6 with the L6 switch cut, DL2 overlaps and can reach that fault location, fault are isolated automatically and shift power supply automatically, realizes self-healing on the spot.
9) if the #9 point has fault:
If closing DL1, transient fault, protective device get final product;
If permanent fault, protective device is with the DL1 action (2 actions) of closing again.FTU1, FTU7 receive fault-signal (2 times) during this time, and other FTU do not receive fault-signal, this moment FTU7 with the L7 switch cut, DL1 overlaps and can reach that fault location, fault are isolated automatically and shift power supply automatically, realizes self-healing on the spot.
10) if the #10 point has fault:
If transient fault, the DL2 protection overlaps and gets final product;
If permanent fault, DL2 protection overlap action again (2 actions).FTU3, FTU9 receive fault-signal (2 times) during this time; Other FTU do not receive fault-signal; This moment FTU9 with the L9 switch cut, FTU10 with the L10 switch cut, FTU5 with the L5 switch close, DL2 overlaps and can reach that fault location, fault are isolated automatically and shift power supply automatically, realizes self-healing on the spot.
Carry out the description of fault self-recovery processing procedure by above-mentioned two power supplys loop network system, three power supplys loop network system and the four power supplys loop network system of handing in hand of handing in hand of handing in hand, can find out that the Self healing Strategy storehouse is based on following rule:
1) breaking down between the nearest interconnection switch of a mains side and same circuit therein, this interconnection switch must close, to accept the opposite side power supply;
2) to receiving the fault fault-signal and, the on-load switch with malfunctioning node the superior and the subordinate all being cut, all close rest switch from the nearest intelligent terminal of interconnection switch.
3) near the intelligent terminal on the circuit of any several interconnection switches and a mains side, can get a near interconnection switch and mains side arbitrarily, repeat above 2 rules.
So technical scheme of the present invention intelligent terminal when permanent fault takes place selects Self healing Strategy to carry out the fault self-recovery processing from the Self healing Strategy storehouse, and the fault in the power distribution network is in time recovered, and need not to rely on main station system, has improved the reliability of system.
Embodiment 2:
Present embodiment proposes a kind of intelligent power distribution net, and this power distribution network comprises several protective devices and several intelligent terminals; Wherein, this power distribution network is the formula loop network system of handing in hand.
As shown in Figure 7, comprise the memory module that is used for the memory topology structure chart in the intelligent terminal, be used for according to said topology diagram generate the Self healing Strategy storehouse the policy library generation module, be used to carry out wireless telecommunications communication module, be used for on-load switch and interconnection switch are carried out first switch control module of closed control and be used for main control module that other modules are controlled and managed.Protective device comprises and is used to carry out the communication module of wireless telecommunications and is used for that transformer station is gone out wiretap carry out the closed second switch control module of controlling.
Memory module is stored the topology diagram of power distribution network, and the policy library generation module generates the Self healing Strategy storehouse according to topology diagram.Topology diagram can adopt Visio software to draw, and representes switch, circuit and/or power supply in the power distribution network respectively with some element figures, and each element figure all comprises number information or the sign of representing correspondence position.Use the method for " playing with building blocks " that it is combined then, become complete power distribution network topology diagram.The policy library generation module is split as the logical relation table of being made up of number information one by one according to topology diagram with the network topology relation.
Carry out wireless telecommunications through communication module between protective device and the intelligent terminal, also carry out wireless telecommunications between each intelligent terminal through communication module.The communication module of present embodiment can adopt dual mode to realize: the communication module that 1) adopts the mode of GPRS or 3G to carry out wireless telecommunications; 2) employing comprises the communication module that the wireless private network mode of MCWILL or WIMAX mode is carried out wireless telecommunications.
The fault-signal failure judgement type that switch control module and main control module obtain according to communication is transient fault or permanent fault, closes if transient fault then goes out wiretap by the second switch control module with transformer station; Overlap twice if permanent fault then goes out wiretap by the second switch control module with transformer station, and from the Self healing Strategy storehouse, select Self healing Strategy to carry out fault self-recovery by main control module and handle.The Self healing Strategy that main control module can be chosen comprises: 1) if malfunctioning node between mains side and interconnection switch, then main control module sends first control command to the first switch control module, by this first switch control module this interconnection switch that closes.2) to receiving fault-signal and leaving the nearest intelligent terminal of interconnection switch; Then main control module sends second control command to the first switch control module; Cut by the superior and the subordinate's on-load switch of this first switch control module, and other on-load switches are closed malfunctioning node.
For transient fault and permanent fault, can reference implementation in the example 1 to this description, repeat no more at this.
Present embodiment is the process that example is explained fault self-recovery with the looped network of handing in hand of two power supplys among Fig. 4 still.Memory module among the intelligent terminal FTU1-FTU5 has all been stored the topological diagram of the looped network of Fig. 4, and has formed the tabulation of device logic, such as:
The adjacent interconnection side of address switch numbering mains side is adjacent
#1： L1 DL1 L2
#2： L2 L1 L3
#3： L3 L2 L4
#4： L4 L3 L5
#5： L5 L4 DL2
#6:DL2 L5 power supply 2
When among Fig. 4 when permanent fault takes place in #3, according to Self healing Strategy, processing procedure is following:
The second switch control module goes out wiretap DL1 with transformer station and overlaps twice.Overlapped during twice at DL1: malfunctioning node # 3 is between the mains side and interconnection switch L4 in Fig. 4 left side, and then main control module sends first control command to the first switch control module, by this first switch control module this interconnection switch L4 that closes; Can experience power failure, leave the nearest intelligent terminal of interconnection switch is FTU2; Therefore main control module sends second control command to the first switch control module; By this first switch control module the on-load switch L2 of the superior and the subordinate of malfunctioning node # 3 and L3 are cut, and will close except that L2 and other on-load switches the L3.
Through said process, the intelligent power distribution net that present embodiment proposes can select Self healing Strategy to carry out the fault self-recovery processing when permanent fault takes place fast, and the fault in the power distribution network is in time recovered, and need not to rely on main station system, has improved the reliability of system.
Above-described embodiment of the present invention does not constitute the qualification to protection range of the present invention.Any modification of within spirit of the present invention and principle, being done, be equal to replacement and improvement etc., all should be included within the claim protection range of the present invention.
Claims (7)
1. the method for intelligent feeder automation in the power distribution network is characterized in that, power distribution network is the formula loop network system hand in hand that comprises several protective devices and several intelligent terminals; The method of intelligent feeder automation specifically comprises in this power distribution network:
Step S1 is stored in the topology diagram of power distribution network in each intelligent terminal, and said intelligent terminal generates the Self healing Strategy storehouse according to said topology diagram;
Step S2, said protective device and said intelligent terminal carry out wireless telecommunications, also carry out wireless telecommunications between each intelligent terminal;
Step S3, the fault-signal that said protective device and said intelligent terminal obtain according to communication confirm that fault type is transient fault or permanent fault, closes if transient fault then goes out wiretap by said protective device with transformer station; Overlap twice if permanent fault then goes out wiretap by said protective device with transformer station, and from said Self healing Strategy storehouse, select Self healing Strategy to carry out fault self-recovery by said intelligent terminal and handle;
Wherein, said Self healing Strategy comprises:
If malfunctioning node is between mains side and interconnection switch, then said intelligent terminal this interconnection switch that closes; To receiving fault-signal and leaving the nearest intelligent terminal of said interconnection switch, then intelligent terminal cuts the superior and the subordinate's on-load switch of malfunctioning node, and will close except that other on-load switches said the superior and the subordinate on-load switch.
2. according to the method for intelligent feeder automation in the said power distribution network of claim 1; It is characterized in that; Before step S1; Also comprise step: represent switch, circuit and/or power supply in the power distribution network respectively with some element figures, draw the topology diagram of said power distribution network according to said element figure; Wherein, each element figure all comprises number information or the sign of representing correspondence position.
3. according to the method for intelligent feeder automation in claim 1 or the 2 said power distribution networks, it is characterized in that the process of wireless telecommunications is carried out wireless telecommunications for the mode that adopts GPRS or 3G among the step S2.
4. according to the method for intelligent feeder automation in claim 1 or the 2 said power distribution networks, it is characterized in that the process of wireless telecommunications is carried out wireless telecommunications for adopting the wireless private network mode among the step S2; Wherein, said wireless private network mode comprises MCWILL or WIMAX mode.
5. an intelligent power distribution net is characterized in that, this power distribution network comprises several protective devices and several intelligent terminals; Wherein, this power distribution network is the formula loop network system of handing in hand;
Comprise the memory module that is used for the memory topology structure chart in the said intelligent terminal, be used for according to said topology diagram generate the Self healing Strategy storehouse the policy library generation module, be used to carry out wireless telecommunications communication module, be used for on-load switch and interconnection switch are carried out first switch control module of closed control and be used for main control module that other modules are controlled and managed;
Said protective device comprises and is used to carry out the communication module of wireless telecommunications and is used for that transformer station is gone out wiretap carry out the closed second switch control module of controlling;
Said memory module is stored the topology diagram of power distribution network; Said policy library generation module generates the Self healing Strategy storehouse according to said topology diagram;
Carry out wireless telecommunications through said communication module between said protective device and the said intelligent terminal, also carry out wireless telecommunications between each intelligent terminal through said communication module;
The fault-signal that said second switch control module and said main control module obtain according to communication confirms that fault type is transient fault or permanent fault, closes if transient fault then goes out wiretap by said second switch control module with transformer station; Overlap twice if permanent fault then goes out wiretap by said second switch control module with transformer station, and from said Self healing Strategy storehouse, select Self healing Strategy to carry out fault self-recovery by said main control module and handle;
Wherein, said Self healing Strategy comprises:
If malfunctioning node is between mains side and interconnection switch, then said main control module sends first control command to said first switch control module, by this first switch control module this interconnection switch that closes; To receiving fault-signal and leaving the nearest intelligent terminal of said interconnection switch; Then said main control module sends second control command to said first switch control module; Cut by the superior and the subordinate's on-load switch of this first switch control module, and will close except that other on-load switches said the superior and the subordinate on-load switch with malfunctioning node.
6. according to the said intelligent power distribution net of claim 5, it is characterized in that the communication module that the communication module in the said intelligent terminal carries out wireless telecommunications for the mode that adopts GPRS or 3G.
7. according to the said intelligent power distribution net of claim 5, it is characterized in that the communication module of the communication module in the said intelligent terminal for adopting the wireless private network mode to carry out wireless telecommunications; Wherein, said wireless private network mode comprises MCWILL or WIMAX mode.
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| CN102709889B (en) * | 2012-05-29 | 2014-10-15 | 长园深瑞继保自动化有限公司 | Self-healing method and self-healing system for faults of power distribution network |
| CN102738896A (en) * | 2012-06-15 | 2012-10-17 | 河南省电力公司郑州供电公司 | HP-9000 type switching station fault treatment system |
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