CN210780224U - Distribution network fault self-healing device - Google Patents
Distribution network fault self-healing device Download PDFInfo
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- CN210780224U CN210780224U CN201921496227.4U CN201921496227U CN210780224U CN 210780224 U CN210780224 U CN 210780224U CN 201921496227 U CN201921496227 U CN 201921496227U CN 210780224 U CN210780224 U CN 210780224U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/20—Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems
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Abstract
The utility model discloses a distribution network fault self-healing device, including main website and a plurality of automatic remote terminal configuration, the main website includes a plurality of distribution control groups, load switch group and a plurality of contact switch, and the distribution control group includes power, circuit breaker and load switch, and the power is connected with the circuit breaker, and load switch is connected with the circuit breaker, and contact switch and load switch group all are connected with load switch, and a plurality of automatic remote terminal configurations are connected with circuit breaker, load switch group and a plurality of contact switch respectively. The utility model discloses an automatic remote terminal configuration is on circuit breaker, load switch and contact switch, through measuring the relevant analog quantity of electric current on the place circuit, voltage, active power, reactive power etc. and circuit operation, realizes fault location and fault isolation through circuit breaker and load switch, carries out combined floodgate operation and power restoration automatically, has realized intelligent automatic electric wire netting and has detected and resume the power supply.
Description
Technical Field
The utility model relates to a self-healing device especially relates to a distribution network trouble self-healing device.
Background
Feeder automation is an effective means for realizing distribution network self-healing control, can avoid or reduce economic loss caused by distribution line faults in time, and guarantee the life and property safety of people, wherein self-healing control emphasizes the self prevention and self recovery capability during the operation of a power grid, namely, during the normal operation of the power grid, the technology realizes the monitoring optimization and early warning of a line-to-system, and when the power grid is in a fault state, the technology realizes the positioning, isolation and power supply recovery of the faults.
Along with the development of social economy, the requirement of people on power supply reliability is higher and higher, the requirement of people on power supply reliability cannot be met by the traditional feeder automation technology, and the existing research on feeder automation is mostly limited to accident positioning and accident isolation after a power distribution network accident, and the research on the aspect of subsequent power supply recovery is less.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is in order to overcome the defect among the prior art, a distribution network trouble self-healing device has now been provided, power and circuit load information that send on each automatic remote terminal of main website real-time reception has been realized, operation such as through calculation can obtain each circuit power supply's residual capacity, when sending out permanent short circuit fault on the circuit, the switching value that sends on according to the network topology that sets up in advance and the relevant automatic remote terminal shifts information, make fault point position judgement, cut apart into each little network for the center with the network fault point, the available capacity through contrast power supply and the load capacity of circuit supply power restoration to non-fault line, the automatic electric wire netting of intelligence detects and the ability of resumeing the power supply.
The utility model discloses an above-mentioned technical problem is solved through following technical scheme:
the utility model relates to a distribution network fault self-healing device, a serial communication port, distribution network fault self-healing device includes main website and a plurality of automatic remote terminal configuration, the main website includes a plurality of distribution control groups, load switch group and a plurality of contact switch, the distribution control group includes power, circuit breaker and load switch, the power with the circuit breaker is connected, load switch with the circuit breaker is connected, contact switch with load switch group all with load switch is connected, a plurality of automatic remote terminal configurations respectively with the circuit breaker load switch group and a plurality of contact switch is connected.
Preferably, the plurality of power distribution control groups include a first power distribution control group, a second power distribution control group, a third power distribution control group and a fourth power distribution control group, the first power distribution control group includes a first power source, a first circuit breaker and a first load switch, the first power source is connected to the first circuit breaker, the first load switch is connected to the first circuit breaker, the second power distribution control group includes a second power source, a second circuit breaker and a third load switch, the second power source is connected to the second circuit breaker, the second circuit breaker is connected to the third load switch, the third power distribution control group includes a third power source, a third circuit breaker and a sixth load switch, the third power source is connected to the third circuit breaker, the third circuit breaker is connected to the sixth load switch, and the fourth power distribution control group includes a fourth power source, a third circuit breaker, a fourth load switch and a fourth load switch, The fourth power supply is connected with the fourth circuit breaker, and the eighth load switch is connected with the fourth circuit breaker.
Preferably, the load switch group includes a second load switch, a fourth load switch, a fifth load switch and a seventh load switch, the second load switch is connected with the first load switch and the fourth load switch, and the fifth load switch is connected with the fourth load switch and the seventh load switch.
Preferably, the plurality of interconnection switches include a first interconnection switch, a second interconnection switch and a third interconnection switch, the first interconnection switch is connected to the second load switch and the third load switch, the second interconnection switch is connected to the fifth load switch and the sixth load switch, and the third interconnection switch is connected to the seventh load switch and the eighth load switch.
The utility model discloses an actively advance the effect and lie in:
the utility model adopts the automatic remote terminal to be arranged on the breaker, the load switch and the interconnection switch, and mutually carries out information interaction through TCP/IP, meanwhile, each automatic remote terminal is also connected with the main station through TCP/IP, so that the main station receives the power supply and line load information sent by each automatic remote terminal in real time, the residual capacity of the power supply of each line can be obtained through calculation and the like, and when a permanent short-circuit fault occurs on the line, according to the preset network topology and the switching value displacement information sent by the related automatic remote terminal, the position of the fault point is judged, the network fault point is taken as the center and is divided into each small network, the power supply recovery is carried out on the non-fault line by comparing the available capacity of the power supply and the load capacity of the line, so that the intelligent and automatic power grid detection and power supply recovery capabilities are realized.
Drawings
Fig. 1 is a schematic circuit diagram of the master station according to a preferred embodiment of the present invention.
Fig. 2 is a schematic structural diagram of the main station and the automated remote terminal according to a preferred embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a power distribution control group according to a preferred embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a first area small network according to a preferred embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a second area small network according to a preferred embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a third area small network according to a preferred embodiment of the present invention.
Detailed Description
The present invention is further illustrated by way of the following examples, which are not intended to limit the scope of the invention.
Referring to fig. 2 and fig. 3, a distribution network fault self-healing device includes a main station 21 and a plurality of automatic remote terminal configurations 22, the main station 21 includes a plurality of distribution control groups, a load switch group and a plurality of interconnection switches, the distribution control groups include a power supply 23, a circuit breaker 24 and a load switch 25, the power supply 23 is connected to the circuit breaker 24, the load switch 25 is connected to the circuit breaker 24, the interconnection switches and the load switch group are connected to the load switch 25, the plurality of automatic remote terminal configurations 22 are connected to the circuit breaker 24, the load switch 25, the load switch group and the plurality of interconnection switches, the automatic remote terminal configurations 22 transmit data related to current, voltage, active power, reactive power and line operation through the connected circuit breaker 24, load switch 25, load switch group and the plurality of interconnection switches, and transmit the total power of all lines and the actual load demand of each load line to the main station 21 at time intervals of hour level, meanwhile, when a permanent short-circuit fault occurs in a line, the automatic remote terminal configuration 22 performs fault location and fault isolation on the fault line by tripping off the corresponding circuit breaker 24 and load switch 25 according to the current of the line and the switching value information of the load switch sent by the adjacent terminal, and sends the switching value location information to the master station 21, and each corresponding automatic remote terminal 22 performs switching-on operation according to a command sent by the master station 21 and performs power restoration on a fault area.
Referring to fig. 1, the plurality of power distribution control groups includes a first power distribution control group, a second power distribution control group, a third power distribution control group and a fourth power distribution control group, the first power distribution control group includes a first power source 1, a first circuit breaker 2 and a first load switch 3, the first power source 1 is connected to the first circuit breaker 2, the first load switch 3 is connected to the first circuit breaker 2, the second power distribution control group includes a second power source 6, a second circuit breaker 7 and a third load switch 8, the second power source 6 is connected to the second circuit breaker 7, the second circuit breaker 7 is connected to the third load switch 8, the third power distribution control group includes a third power source 9, a third circuit breaker 10 and a sixth load switch 11, the third power source 9 is connected to the third circuit breaker 10, the third circuit breaker 10 is connected to the sixth load switch 11, the fourth power distribution control group includes a fourth power source 14, a fourth load switch 14, a fourth, A fourth circuit breaker 15 and an eighth load switch 16, the fourth power source 14 being connected to the fourth circuit breaker 15, the eighth load switch 16 being connected to the fourth circuit breaker 15, the load switch group comprising a second load switch 4, a fourth load switch 19, a fifth load switch 13 and a seventh load switch 18, the second load switch 4 is connected to the first load switch 3 and the fourth load switch 19, the fifth load switch 13 is connected to the fourth load switch 19 and the seventh load switch 18, the plurality of interconnection switches include a first interconnection switch 5, a second interconnection switch 12 and a third interconnection switch 17, the first interconnection switch 5 is connected to the second load switch 4 and the third load switch 8, the second interconnection switch 12 is connected to the fifth load switch 13 and the sixth load switch 11, and the third interconnection switch 17 is connected to the seventh load switch 18 and the eighth load switch 17.
When a line has a fault, the automatic remote terminal configuration 22 receives power-off information through terminal induction, and instructs the first breaker 2 to open the brake, the outlet end of the first load switch 3 to open the brake, the inlet end of the second load switch 4 to open the brake and the inlet end of the fourth load switch 19 to open the brake, and other switches keep the original state, after the fault occurs, the automatic remote terminal configuration 22 first completes the positioning and isolation of the fault, then divides the fault network into independent networks by taking a fault point 20 as a center for analysis, when the load requirement of the second load switch 4 is less than the residual capacity of the second power supply 6, the first interconnection switch 5 is switched on, the power supply of the second load switch 4 is recovered, when the load requirement of the second load switch 4 is greater than the residual capacity of the second power supply 6, the open state of the first interconnection switch 5 is maintained, and when the fourth load switch 19 is greater than the residual capacity of the second power supply 6, When the load demands of the fifth load switch 13 and the seventh load switch 18 are greater than the sum of the residual capacities of the third power supply 9 and the fourth power supply 14, the loads with low priorities are preferentially switched off for the load demands of the fourth load switch 19, the fifth load switch 13 and the seventh load switch 18 until the remaining load demands are less than the sum of the residual capacities of the third power supply 9 and the fourth power supply 14, the second contact switch 12 and the third contact switch 17 are simultaneously switched on to restore the power supply, when the load demands of the fourth load switch 19, the fifth load switch 13 and the seventh load switch 18 are less than the sum of the residual capacities of the third power supply 9 and the fourth power supply 14, the second contact switch 12 and the third contact switch 17 are simultaneously switched on to simultaneously supply power to the fourth load switch 19, the fifth load switch 13 and the seventh load switch 18 by the third power supply 9 and the fourth power supply 14, if the residual capacity of the third power supply 9 is less than the residual capacity of the fourth power supply 14, when the load requirements of the fourth load switch 19, the fifth load switch 13 and the seventh load switch 18 are less than the remaining capacity of the third power supply 9, the second contact switch 12 is switched on according to the length difference of the lines, the third power supply 9 supplies power to the third contact switch 17 or the fourth power supply 14 supplies power to the third contact switch 17, and when the load requirements of the fourth load switch 19, the fifth load switch 13 and the seventh load switch 18 are greater than the remaining capacity of the third power supply 9 and less than the remaining capacity of the fourth power supply 14, the third contact switch 17 is switched on, and the fourth power supply 14 supplies power.
A self-healing method for faults of a power distribution network comprises the following steps:
referring to fig. 1, in step one, through the breaker 24 and the automatic remote terminal configuration 22 configured on the load line, the master station 21 obtains the timely data of the line, including the topology of the line, the load requirements of the load switches 25, and the remaining capacity of the power supply 23;
step two, after a line has a fault, each automatic remote terminal configuration 22 exchanges fault information with a terminal connected with the automatic remote terminal configuration 22, the terminal on an upstream first load switch 3 nearest to a fault point 20 can detect overcurrent information, the terminals on a downstream second load switch 4 nearest to the fault point 20 and a fourth load switch 19 cannot detect overcurrent information, it can be known that the fault occurs on the line between the first load switch 3 and the second load switch 4, the first circuit breaker 2 at the outlet trips, the automatic remote terminal configuration 22 around the fault section controls the corresponding first load switch 3 to be switched off, the automatic remote terminal configuration 22 in action generates switch quantity displacement information to the master station 21, and the master station 21 obtains the position information of the fault point 20;
step three, please refer to fig. 4, fig. 5 and fig. 6, the fault point 20 is the center, and the whole distribution network is divided into each area small network for independent analysis;
step four, please refer to fig. 4, if the number of the corresponding tie switches in the area is 0, it indicates that the area has no standby power supply 23, and the operation is finished;
step five, please refer to fig. 5, if the number of the tie switches corresponding to the area is 1, it indicates that there are 1 standby power supplies in the area, which is the second power supply 6, the capacity of the available second power supply 6 and the load demand of the area are compared, if the capacity of the second power supply 6 is greater than the load demand, the first tie switch 5 is closed, the action is finished, if the capacity of the second power supply 6 is less than the load demand, the first tie switch 5 is opened, the low load is cut off according to the load priority, until the load demand is less than the capacity of the second power supply 6, the first tie switch 5 is closed, the action is finished;
step six, please refer to fig. 6, if the number of the corresponding tie switches in the area is greater than 1, indicating that there are at least two standby power supplies in the area, namely the third power supply 9 and the fourth power supply 14, comparing the maximum capacity of the third power supply 9 and the fourth power supply 14 and the load demand, if the third power supply 9 meets the demand, closing the second tie switch 12 corresponding to the third power supply 9, if the third power supply 9 still does not meet the demand, sequentially increasing 1 fourth power supply 14 according to the capacitance from large to small, comparing the load demand, closing the third tie switch 17 corresponding to the fourth power supply 14 if the demand is met, if the total electric quantity of all the power supplies is less than the load demand, starting to cut off the load from low to high according to the priority of the load, until the load demand is less than the total capacity of all the power supplies, closing all the tie switches, the action is ended.
The utility model adopts the technical proposal that the automatic remote terminals 22 are arranged on the circuit breaker 24, the load switch 25 and the communication switch and carry out information interaction through TCP/IP, and simultaneously, each automatic remote terminal 22 is also connected with the main station 21 through TCP/IP and sends the total power of the circuit (the automatic remote terminal 22 arranged on the circuit breaker 24) and the real-time load demand of each load circuit (the automatic remote terminal 22 arranged on the load switch 25) to the main station 21 at small time intervals by measuring the current, voltage, active power, reactive power and other related analog quantities of the circuit operation on the circuit, and when the circuit has a permanent short-circuit fault, the automatic remote terminal 22 carries out fault location and fault isolation on the fault circuit by jumping off the corresponding circuit breaker 24 and the load switch 25 according to the current of the circuit and the switching value information of the load switch 25 sent by the adjacent terminals, the automatic remote site with the action sends the respective switching value displacement information to the main station 21, then each corresponding automatic remote terminal 22 carries out switching-on operation according to the received command sent by the main station 21 to carry out power supply recovery on the non-fault area, the main station 21 receives the power supply and line load information sent by each automatic remote terminal 22 in real time, the residual capacity of the power supply of each line can be obtained through calculation and the like, and when a permanent short-circuit fault occurs on the line, according to the preset network topology and the switching value displacement information sent by the related automatic remote terminal 22, the position judgment of the fault point is made, the network fault point is divided into each small network as the center, the power supply recovery is carried out on the non-fault line by comparing the available capacity of the power supply and the load capacity of the line, so that the intelligent and automatic power grid detection and power supply recovery capabilities are realized.
The present invention has been described in detail with reference to the embodiments shown in the drawings, and those skilled in the art can make various modifications to the present invention based on the above description. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. Therefore, certain details of the embodiments should not be construed as limitations of the invention, which are intended to be covered by the following claims.
Claims (4)
1. The utility model provides a distribution network fault self-healing device, a serial communication port, distribution network fault self-healing device includes main website and a plurality of automatic remote terminal configuration, the main website includes a plurality of distribution control groups, load switch group and a plurality of contact switch, the distribution control group includes power, circuit breaker and load switch, the power with the circuit breaker is connected, load switch with the circuit breaker is connected, contact switch and load switch group all with load switch is connected, a plurality of automatic remote terminal configuration respectively with the circuit breaker load switch group and a plurality of contact switch is connected.
2. The distribution network fault self-healing device according to claim 1, wherein the plurality of distribution control groups include a first distribution control group, a second distribution control group, a third distribution control group and a fourth distribution control group, the first distribution control group includes a first power source, a first circuit breaker and a first load switch, the first power source is connected with the first circuit breaker, the first load switch is connected with the first circuit breaker, the second distribution control group includes a second power source, a second circuit breaker and a third load switch, the second power source is connected with the second circuit breaker, the second circuit breaker is connected with the third load switch, the third distribution control group includes a third power source, a third circuit breaker and a sixth load switch, the third power source is connected with the third circuit breaker, the third circuit breaker is connected with the sixth load switch, the fourth power distribution control group comprises a fourth power supply, a fourth circuit breaker and an eighth load switch, the fourth power supply is connected with the fourth circuit breaker, and the eighth load switch is connected with the fourth circuit breaker.
3. The power distribution network fault self-healing device according to claim 2, wherein the load switch group includes a second load switch, a fourth load switch, a fifth load switch, and a seventh load switch, the second load switch is interconnected with the first load switch and the fourth load switch, and the fifth load switch is interconnected with the fourth load switch and the seventh load switch.
4. The power distribution network fault self-healing device according to claim 3, wherein the plurality of tie switches includes a first tie switch, a second tie switch, and a third tie switch, the first tie switch is connected to the second load switch and the third load switch, the second tie switch is connected to the fifth load switch and the sixth load switch, and the third tie switch is connected to the seventh load switch and the eighth load switch.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921496227.4U CN210780224U (en) | 2019-09-10 | 2019-09-10 | Distribution network fault self-healing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921496227.4U CN210780224U (en) | 2019-09-10 | 2019-09-10 | Distribution network fault self-healing device |
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| CN210780224U true CN210780224U (en) | 2020-06-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110535241A (en) * | 2019-09-10 | 2019-12-03 | 上海致达智能科技股份有限公司 | A kind of distribution network fault self-recovery devices and methods therefor |
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2019
- 2019-09-10 CN CN201921496227.4U patent/CN210780224U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110535241A (en) * | 2019-09-10 | 2019-12-03 | 上海致达智能科技股份有限公司 | A kind of distribution network fault self-recovery devices and methods therefor |
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