CN114142446B - Method for preventing intelligent distributed system from being abnormal - Google Patents
Method for preventing intelligent distributed system from being abnormal Download PDFInfo
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- CN114142446B CN114142446B CN202111418096.XA CN202111418096A CN114142446B CN 114142446 B CN114142446 B CN 114142446B CN 202111418096 A CN202111418096 A CN 202111418096A CN 114142446 B CN114142446 B CN 114142446B
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- 238000000034 method Methods 0.000 title claims abstract description 53
- 230000002159 abnormal effect Effects 0.000 title claims abstract description 17
- 230000009471 action Effects 0.000 claims abstract description 20
- 238000005452 bending Methods 0.000 claims description 9
- 238000012545 processing Methods 0.000 claims description 7
- 238000002955 isolation Methods 0.000 claims description 4
- 230000005856 abnormality Effects 0.000 description 30
- 239000011435 rock Substances 0.000 description 20
- 238000010586 diagram Methods 0.000 description 7
- 238000004891 communication Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/28—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured for meshed systems
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G15/00—Cable fittings
- H02G15/08—Cable junctions
- H02G15/10—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
- H02J13/00036—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers
- H02J13/0004—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers involved in a protection system
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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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Train Traffic Observation, Control, And Security (AREA)
- Small-Scale Networks (AREA)
Abstract
The application discloses a method for preventing an intelligent distributed system from being abnormal, which comprises the steps of butting all ring main units through a cable junction box to form a passage; detecting states of a power point switch and a trunk switch; when the main line switch protection does not act and two adjacent switches do not act, the main line switch does not participate in fault point positioning, and the intelligent distributed function of the main line switch is locked and sends out a first signal; when the power point switch is at a closing position and the protection is not operated and the protection operation information of the adjacent switch is received, the power point switch does not participate in fault point positioning, and the intelligent distributed function is locked and sends out a second signal; the cable junction box comprises a box body and a wiring unit, wherein the wiring unit is arranged in the box body. The method solves the problems of imperfect strategy and program, incomplete fault positioning and locking conditions and the like of the intelligent distributed system, and improves the correct action rate of the intelligent distributed system.
Description
Technical Field
The application relates to the technical field of intelligent distributed systems, in particular to a method for preventing an intelligent distributed system from being abnormal.
Background
At present, the requirements of power distribution network users on power supply reliability are continuously improved, the fault removal time is expected to be as short as possible, and the fault influence range is as small as possible. How to prevent the intelligent distributed system from being abnormal becomes a hot spot for research of each related technical unit.
Some intelligent distributed system taking switch state as fault positioning reference has the conditions of imperfect strategy and program, imperfect fault positioning locking condition and the like, which causes the intelligent distributed system to act incorrectly or to generate abnormality
Disclosure of Invention
This section is intended to outline some aspects of embodiments of the application and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description of the application and in the title of the application, which may not be used to limit the scope of the application.
The present application has been made in view of the above and/or existing problems in the methods for preventing anomalies in intelligent distributed systems.
Accordingly, the problem to be solved by the present application is how to provide a method for preventing an abnormality of an intelligent distributed system.
In order to solve the technical problems, the application provides the following technical scheme: a method for preventing the abnormality of intelligent distributed system, it includes, butt-joint each looped netowrk cabinet through the cable junction box, form the route;
detecting states of a power point switch and a trunk switch;
when the main line switch protection does not act and two adjacent switches do not act, the main line switch does not participate in fault point positioning, and the intelligent distributed function of the main line switch is locked and sends out a first signal;
when the power point switch is at a closing position and the protection is not operated and the protection operation information of the adjacent switch is received, the power point switch does not participate in fault point positioning, and the intelligent distributed function is locked and sends out a second signal;
when the main line switch is not in action but at least two adjacent power point switches are in action and the power point switches are in a closing position, the intelligent distributed system firstly sends and executes an instruction that the main line switch does not participate in fault point positioning and locks the intelligent distributed function of the main line switch;
the cable junction box comprises a box body and a wiring unit, wherein the wiring unit is arranged in the box body;
the wiring unit comprises a rotating part, a bending part matched with the rotating part and a conductive part arranged on the inner side surface of the box body, wherein the rotating part comprises a first cylinder matched with the box body in a rotating way, a first auxiliary plate fixedly connected with the first cylinder, a second cylinder matched with the first auxiliary plate in a rotating way, a first clamping wheel arranged at the top end of the second cylinder, a first driving part for driving the first cylinder to rotate and a second driving part for driving the second cylinder to rotate;
the bending piece comprises a third cylinder arranged above the first auxiliary plate, a second clamping wheel arranged at the top end of the third cylinder, an L-shaped rod connected to the first auxiliary plate, and a baffle plate arranged at one side of the L-shaped rod;
the first driving piece comprises a first threaded rod in running fit with the box body and a first gear arranged on the first cylinder, and the first threaded rod is meshed with the first gear;
the second driving piece comprises a second threaded rod in running fit with the box body and a second gear arranged on the second cylinder, and the second threaded rod is meshed with the second gear.
As a preferred embodiment of the method for preventing abnormality of an intelligent distributed system according to the present application, wherein: 2. when the main line switch is in protection action and the protection of the adjacent power point switch is not in action, the intelligent distributed system is locked and directly jumps the main line switch, and a third signal is sent;
when the branch switch protection is operated and the protection of the adjacent power point switch is not operated, the intelligent distributed system is locked and directly jumps the branch switch to send a third signal.
As a preferred embodiment of the method for preventing abnormality of an intelligent distributed system according to the present application, wherein: after the information is confirmed, the intelligent distributed system enters fault judgment and export logic.
As a preferred embodiment of the method for preventing abnormality of an intelligent distributed system according to the present application, wherein: when all switches participating in the intelligent distributed system on the loop are in the closed position, the intelligent distributed system sends an alarm signal of abnormal position of the interconnection switch.
As a preferred embodiment of the method for preventing abnormality of an intelligent distributed system according to the present application, wherein: aiming at two points of faults, when the fault points are on two sides of the tie switch, a positioning isolation method is adopted for processing, and the tie switch is not switched on for times; when the fault point is on one side of the tie switch, a single fault point mode is adopted for processing.
As a preferred embodiment of the method for preventing abnormality of an intelligent distributed system according to the present application, wherein: and processing the fault isolation to be close to the power supply point by adopting a single fault point mode, and isolating a second fault point far away from the power supply point after the interconnection switch recovers power supply.
As a preferred embodiment of the method for preventing abnormality of an intelligent distributed system according to the present application, wherein: the bending piece further comprises a fourth cylinder arranged on the bottom surface of the first auxiliary plate, and a first track groove matched with the fourth cylinder is formed in the inner bottom surface of the box body.
As a preferred embodiment of the method for preventing abnormality of an intelligent distributed system according to the present application, wherein: the rotating member further includes a second auxiliary plate connecting the second cylinder and the third cylinder.
As a preferred embodiment of the method for preventing abnormality of an intelligent distributed system according to the present application, wherein: the electric conduction piece comprises a first electric conduction plate fixed on the inner side surface of the box body, a second electric conduction plate in sliding fit with the first electric conduction plate, and springs arranged in the first electric conduction plate and connected with the two second electric conduction plates, wherein the two second electric conduction plates are respectively arranged at two ends of the first electric conduction plate, T-shaped protrusions are arranged on the second electric conduction plate, second track grooves for the second electric conduction plate to move are formed in the first electric conduction plate, and the T-shaped protrusions are matched with the second track grooves.
As a preferred embodiment of the method for preventing abnormality of an intelligent distributed system according to the present application, wherein: the box body is internally provided with a middle plate, and the middle plate is provided with a third track groove for the rotation of the third cylinder and a fourth track groove for the rotation of the L-shaped rod.
As a preferred embodiment of the method for preventing abnormality of an intelligent distributed system according to the present application, wherein: the wiring unit further comprises bearing plates arranged on two sides of the second auxiliary plate, and arc grooves are formed in the bearing plates.
As a preferred embodiment of the method for preventing abnormality of an intelligent distributed system according to the present application, wherein: the first clamping wheel comprises a top plate, a connecting column and a bottom plate, wherein the connecting column is connected with the top plate and the bottom plate, the top plate is an arc plate, and the arc length of the top plate is smaller than half of the circumference of the finished circle.
As a preferred embodiment of the method for preventing abnormality of an intelligent distributed system according to the present application, wherein: the connecting column is provided with a plurality of ratchets, and the ratchets are arranged corresponding to the top plate.
As a preferred embodiment of the method for preventing abnormality of an intelligent distributed system according to the present application, wherein: the bottom of the bottom plate is provided with a fifth track groove, and the second auxiliary plate is provided with a limit column matched with the fifth track groove.
The application has the beneficial effects that: the problems of imperfect strategy and program, incomplete fault positioning and locking conditions and the like of the intelligent distributed system are solved, and the correct action rate of the intelligent distributed system is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:
FIG. 1 is a schematic diagram of a party rock line F3 point fault for a method of preventing anomalies in an intelligent distributed system.
FIG. 2 is a schematic diagram of adjacent switches of a method of preventing anomalies in a smart distributed system.
Fig. 3 is a block diagram of a cable junction box in a method of preventing an abnormality of an intelligent distributed system.
FIG. 4 is a schematic interior view of a cable junction box in a method of preventing anomalies in a smart distribution system.
Fig. 5 is a top view of a cable junction box in a method of preventing anomalies in a smart distribution system.
Fig. 6 is a cross-sectional view of the cable junction box B-B of fig. 5 in a method of preventing an abnormality of the intelligent distribution system.
Fig. 7 is a cross-sectional view of the cable junction box A-A of fig. 5 in a method of preventing an abnormality of the intelligent distribution system.
FIG. 8 is a mid-plane schematic diagram of a method of preventing anomalies in a smart distributed system.
FIG. 9 is a schematic diagram of a load board in a method of preventing anomalies in an intelligent distributed system.
Fig. 10 is a cross-sectional view of a conductive member of a method of preventing an abnormality of an intelligent distributed system.
Fig. 11 is a second conductive plate structure diagram of a method of preventing an abnormality of an intelligent distributed system.
Fig. 12 is a first chucking wheel architecture diagram of a method of preventing anomalies in a smart distribution system.
Detailed Description
In order that the above-recited objects, features and advantages of the present application will become more readily apparent, a more particular description of the application will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present application is not limited to the specific embodiments disclosed below.
Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the application. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Example 1
Referring to fig. 1 to 12, for a first embodiment of the present application, there is provided a method for preventing an abnormality of an intelligent distributed system, the method for preventing an abnormality of an intelligent distributed system including the steps of: the ring main units are butted through the cable junction boxes S to form a passage;
detecting states of a power point switch and a trunk switch;
judging whether the intelligent distributed system is abnormal or not according to the switch state, and judging the switch state and corresponding signals to be sent specifically as follows:
1. when the main line switch is not operated and two adjacent switches are operated, the main line switch does not participate in fault point positioning, the intelligent distributed function of the switch is locked and sends out a first signal, and the first signal is a switch abnormality signal.
2. The main line switch is a power point switch, the switch is in a closing position and is not operated in protection, when the protection operation information of the adjacent switch is received, the power point switch does not participate in fault point positioning, the intelligent distributed function of the switch is locked and sends out a second signal, and the second signal is also a switch abnormality signal.
3. When the protection of the main line switch is not operated, but the protection of at least two adjacent switches is operated and the switch is at a closing position, the intelligent distributed system firstly sends and executes an instruction of the intelligent distributed function of the main line switch, wherein the instruction does not participate in fault point positioning and locking the main line switch.
4. And when the protection action of the main line switch is not carried out and the protection of the adjacent switch is not carried out, the intelligent distributed system is locked and directly jumps the main line switch to send out a third signal, wherein the third signal is a protection action and abnormal switch alarm signal.
5. And when the protection action of the branch switch and the protection action of the adjacent switch are not carried out, the intelligent distributed system is locked and directly jumps the branch switch to send out a third signal, and the third signal is the same as the alarm signal of 'protection action and abnormal switch'.
The 1-3 points are mainly used for optimizing fault positioning criteria, and the 4-5 points are mainly used for increasing a processing mechanism of an intelligent distributed terminal during internal faults.
In order to improve the anti-interference capability of the intelligent distributed terminal, the peer-to-peer communication information confirmation time of the intelligent distributed system is preferably increased, and the integrity and reliability of information transmission and reception of each DTU device are ensured. After the information is confirmed, the intelligent distributed system enters fault judgment and export logic. Increasing the fixed value of the intelligent distributed tripping time, and starting timing after detecting a fault for the upstream switch of the fault point; and for the downstream switch of the fault point, starting timing after receiving the fault action information.
In order to increase the abnormal criterion of the position of the tie switch, the function of judging the position of the tie switch is preferably added, and when the position of the tie switch is abnormal, namely, all switches participating in the intelligent distributed system on the loop are in the closed position, the intelligent distributed system sends an alarm signal of abnormal position of the tie switch. When the communication is normal, the judgment is carried out by transmitting the state of the switch. The "tie switch position abnormality" signal is only issued if the tie switch is not in the switch-on condition due to failure recovery.
In order to increase the action reliability of the intelligent distributed system, the locking condition of the intelligent distributed system when two or more faults of the power grid occur simultaneously is preferably increased. Aiming at two points of faults, when the fault points are on two sides of the tie switch, a conventional positioning and isolating method is adopted, but the tie switch cannot be switched on; when the fault point is at one side of the interconnection switch, the fault close to the power point can be detected, and the fault point far away from the power source can not be detected, so that the fault point close to the power point is processed in a single fault point mode, the interconnection switch is used for isolating the second fault point far away from the power point after power supply is recovered. And the locking condition of the intelligent distributed system in the process of remote or on-site modification of the DTU device protection fixed value is increased, so that misoperation of the intelligent distributed system caused by wrong cutting and wrong setting is prevented. Firstly, changing a default fixed value of a standby fixed value area into a fixed value which enables a protection device to be inactive through fixed value remote modification software in the prior art; and then setting the fixed value, putting the fixed value into the pressing plate, checking the fixed value and the pressing plate, and finally switching the fixed value area when the fixed value area switching operation is performed remotely or on site.
As shown in fig. 2, adjacent switches refer to switches having a direct electrical connection relationship. The adjacent switches to switch 3 in fig. 2 are 2 and 4 instead of switches 1 and 5. The fault detection mentioned in this embodiment means that the relay protection device corresponding to the switch flows a short-circuit current, the current value is greater than the fixed value of the built-in overcurrent protection section I or zero sequence overcurrent protection section I, and the relay protection device is started. The non-detection of a fault mentioned in this embodiment means: 1. the relay protection device corresponding to the switch does not flow short-circuit current, and the relay protection device is not started; 2. the relay protection device corresponding to the switch flows short-circuit current, the current value is smaller than the fixed value of the built-in overcurrent protection section I or zero sequence overcurrent protection section I of the device, and the relay protection device is not started. The switch mentioned in this embodiment refers to a circuit breaker or a load switch of a voltage class above 1kV in a power system. The closing switch mentioned in this embodiment means that the switch position is in a closing state. The main line switch mentioned in this embodiment is a switch on the core power supply line on the power grid line. The branch switch mentioned in this embodiment refers to a switch on a distribution network line connected to a core power supply line in a T manner.
Further, the cable junction box S includes a box body 100 and a wiring unit 200, where the wiring unit 200 is disposed in the box body 100;
the wiring unit 200 comprises a rotating member 201, a bending member 202 matched with the rotating member 201, and a conductive member 203 arranged on the inner side surface of the box body 100, wherein the rotating member 201 comprises a first cylinder 201a matched with the box body 100 in a rotating manner, a first auxiliary plate 201b fixedly connected with the first cylinder 201a, a second cylinder 201c matched with the first auxiliary plate 201b in a rotating manner, a first clamping wheel 201d arranged at the top end of the second cylinder 201c, a first driving member 201e driving the first cylinder 201a to rotate, and a second driving member 201f driving the second cylinder 201c to rotate.
The bending member 202 includes a third cylinder 202a disposed above the first auxiliary plate 201b, a second clamping wheel 202b disposed at the top end of the third cylinder 202a, an L-shaped rod 202c connected to the first auxiliary plate 201b, and a baffle 202d disposed at one side of the L-shaped rod 202 c.
The first driving member 201e includes a first threaded rod 201e-1 rotatably coupled to the case 100, and a first gear 201e-2 provided on the first cylinder 201a, and the first threaded rod 201e-1 is engaged with the first gear 201 e-2.
The second driving member 201f includes a second threaded rod 201f-1 rotatably coupled to the case 100, and a second gear 201f-2 disposed on the second cylinder 201c, and the second threaded rod 201f-1 is engaged with the second gear 201 f-2.
It should be noted that, the first threaded rod 201e-1 and the second threaded rod 201f-1 are each provided with two threads having opposite directions, so that the two first cylinders 201a or the two second cylinders 201c can be reversely rotated.
The bending member 202 further includes a fourth cylinder 202e disposed on the bottom surface of the first auxiliary plate 201b, and the inner bottom surface of the box body 100 is provided with a first track groove 101 matched with the fourth cylinder 202e, where the first track groove 101 is configured to limit rotation of the fourth cylinder 202e, so that the fourth cylinder 202e can only rotate within the range of the first track groove 101. The rotating member 201 further includes a second auxiliary plate 201g, the second auxiliary plate 201g connecting the second cylinder 201c and the third cylinder 202a, the second auxiliary plate 201g being provided to increase the connection stability of the second cylinder 201c and the third cylinder 202 a.
Further, the conductive member 203 includes a first conductive plate 203a fixed on an inner side surface of the case 100, a second conductive plate 203b slidably engaged with the first conductive plate 203a, and a spring 203c disposed in the first conductive plate 203a and connected to the two second conductive plates 203b, where the two second conductive plates 203b are disposed at two ends of the first conductive plate 203a, a T-shaped protrusion 203b-1 is disposed on the second conductive plate 203b, a second track groove 203a-1 for moving the second conductive plate 203b is disposed on the first conductive plate 203a, and the T-shaped protrusion 203b-1 is engaged with the second track groove 203 a-1. The middle plate 102 is disposed inside the box body 100, a third track groove 102a for the third cylinder 202a to rotate and a fourth track groove 102b for the L-shaped rod 202c to rotate are disposed on the middle plate 102, the spring 203c is an extension spring, in an initial state, the two second conductive plates 203b are in a state of minimum distance under the action of the spring 203c, when the L-shaped rod 202c rotates to press the cable core on the second conductive plates 203b, the two second conductive plates 203b are gradually pulled apart until the L-shaped rod 202c moves to a maximum distance or the L-shaped rod 202c rotates to a maximum angle, at this time, the cable core is clamped by the L-shaped rod 202c and the second conductive plates 203b and cannot be separated, and stable contact between the cable core and the second conductive plates 203b is ensured.
Preferably, the wiring unit 200 further includes a carrying plate 204 disposed on two sides of the second auxiliary plate 201g, and the carrying plate 204 is provided with an arc slot 204a, and the carrying plate 204 is configured to better carry the cable core. The first clamping wheel 201d comprises a top plate 201d-1, a connecting column 201d-2 and a bottom plate 201d-3, the connecting column 201d-2 is connected with the top plate 201d-1 and the bottom plate 201d-3, the top plate 201d-1 is an arc plate, the arc length of the top plate 201d-1 is smaller than half of the circumference of the finished circle, when a battery cell passes through the first clamping wheel 201d, the top plate 201d-1 and the bottom plate 201d-3 can clamp the battery cell, and after the top plate 201d-1 rotates for a certain angle, the top plate 201d-1 can not clamp the battery cell, and the bent battery cell can be taken out at the moment.
Preferably, a plurality of ratchets 201d-21 are provided on the connection post 201d-2, and the ratchets 201d-21 are provided corresponding to the top plate 201 d-1. The ratchet 201d-21 is provided to prevent the cell from being withdrawn when external force is applied, and to allow the first chucking wheel 201d to rotate in a direction to withdraw the ratchet 201d-21 from the cell.
The bottom of the bottom plate 201d-3 is provided with a fifth track groove 201d-31, the second auxiliary plate 201g is provided with a limit post 201g-1 matched with the fifth track groove 201d-31, and the arrangement of the fifth track groove 201d-31 and the limit post 201g-1 can enable the first clamping wheel 201d to move only in the range of the fifth track groove 201d-31 to prevent the first clamping wheel from rotating excessively so as to clamp the battery cell again.
In summary, each ring main unit is abutted through the cable junction box S to form a passage, so that the intelligent distributed function is started, then states of the power point switch and the main switch are detected, corresponding signals are fed back according to specific detection conditions, the problems of imperfect strategy and program, incomplete fault positioning locking condition and the like of the intelligent distributed system are solved, and the correct action rate of the intelligent distributed system is improved.
When each ring main unit is docked through the cable junction box S, the electric cores of the two cables are inserted between the first clamping wheels 201d and the second clamping wheels 202b on the two sides until being blocked by the baffle 202d, then the electric cores of the cables are bent through the first driving piece 201e, the two cables are docked through the conductive piece 203, when the disassembly is needed, the upper cover of the box body 100 is taken down, the top plate 201d-1 is not clamped with the electric cores any more through the second driving piece 201f, then the cables are taken out, the whole connection process is simple and convenient, the electric connection to the ring main units is convenient, and the installation time is saved.
Example 2
Referring to fig. 1 and 2, in the second embodiment of the present application, the fault of the party rock line F3 is taken as an example, and 011 and 012 are main line switches, 001 to 004 are branch switches, and 013 is both the main line switch and the tie switch in fig. 1. The method comprises the following steps:
1. the party rock line 001 switch does not detect an overcurrent condition:
the 'party rock line 001 switch' is used as a first switch, overcurrent is not detected, and a 'fault signal' sent by the 'party rock line No. 1 ring main unit 011 switch' is received, so that the 'party rock line 001 switch' device reports 'abnormal switch state', and the intelligent distributed function of the switch is locked.
2, the switch 011 of the ring main unit No. 1 of the party rock wire receives a switch state abnormality signal sent by the switch 001 of the party rock wire, and the intelligent distributed function of the switch is locked; the intelligent distributed normal action of the ' party rock wire No. 1 ring main unit 012 switch ' and the ' party rock wire No. 2 ring main unit 011 switch ' without abnormal switch state '.
2. The overcurrent condition is not detected by the switch of the ring main unit 011 of the Party rock line No. 1
The 'party rock line No. 1 ring main unit 011 switch' does not detect overcurrent, and receives a 'fault signal' sent by the 'party rock line 001 switch' and a 'fault signal' sent by the 'party rock line No. 1 ring main unit 012 switch', and then the 'party rock line No. 1 ring main unit 011 switch' device reports 'abnormal switch state', so that the intelligent distributed function of the switch is locked.
And 2, the 'switch state abnormality' reported by the 'party rock wire 001 switch' receiving 'party rock wire No. 1 ring main unit 011 switch' device is locked.
And 3, when the switch of the ring main unit 012 on the party rock line 1 detects overcurrent and does not receive a fault signal sent by the left side and the right side, a switch state abnormality signal is sent, and the switch is directly cut off.
And 4, the switch 011 of the ring main unit No. 2 of the party rock wire receives a switch state abnormality signal sent by the switch 012 of the ring main unit No. 1 of the party rock wire, and then the intelligent distributed function of the switch is locked.
It should be noted that the above embodiments are only for illustrating the technical solution of the present application and not for limiting the same, and although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present application may be modified or substituted without departing from the spirit and scope of the technical solution of the present application, which is intended to be covered in the scope of the claims of the present application.
Claims (14)
1. A method for preventing an intelligent distributed system from being abnormal, which is characterized in that: comprising the steps of (a) a step of,
each ring main unit is butted through a cable junction box (S) to form a passage;
detecting states of a power point switch and a trunk switch;
when the main line switch protection does not act and two adjacent switches do not act, the main line switch does not participate in fault point positioning, and the intelligent distributed function of the main line switch is locked and sends out a first signal;
when the power point switch is at a closing position and the protection is not operated and the protection operation information of the adjacent switch is received, the power point switch does not participate in fault point positioning, and the intelligent distributed function is locked and sends out a second signal;
when the main line switch is not in action but at least two adjacent power point switches are in action and the power point switches are in a closing position, the intelligent distributed system firstly sends and executes an instruction that the main line switch does not participate in fault point positioning and locks the intelligent distributed function of the main line switch;
the cable junction box (S) comprises a box body (100) and a wiring unit (200), wherein the wiring unit (200) is arranged in the box body (100);
the wiring unit (200) comprises a rotating part (201), a bending part (202) matched with the rotating part (201), and a conductive part (203) arranged on the inner side surface of the box body (100), wherein the rotating part (201) comprises a first cylinder (201 a) in rotating fit with the box body (100), a first auxiliary plate (201 b) fixedly connected with the first cylinder (201 a), a second cylinder (201 c) in rotating fit with the first auxiliary plate (201 b), a first clamping wheel (201 d) arranged at the top end of the second cylinder (201 c), a first driving part (201 e) for driving the first cylinder (201 a) to rotate, and a second driving part (201 f) for driving the second cylinder (201 c) to rotate;
the bending piece (202) comprises a third cylinder (202 a) arranged above the first auxiliary plate (201 b), a second clamping wheel (202 b) arranged at the top end of the third cylinder (202 a), an L-shaped rod (202 c) connected to the first auxiliary plate (201 b), and a baffle plate (202 d) arranged at one side of the L-shaped rod (202 c);
the first driving piece (201 e) comprises a first threaded rod (201 e-1) in rotating fit with the box body (100), and a first gear (201 e-2) arranged on the first cylinder (201 a), and the first threaded rod (201 e-1) is meshed with the first gear (201 e-2);
the second driving piece (201 f) comprises a second threaded rod (201 f-1) in rotating fit with the box body (100), and a second gear (201 f-2) arranged on the second cylinder (201 c), and the second threaded rod (201 f-1) is meshed with the second gear (201 f-2).
2. The method for preventing an intelligent distributed system anomaly as recited in claim 1, wherein: when the main line switch is in protection action and the protection of the adjacent power point switch is not in action, the intelligent distributed system is locked and directly jumps the main line switch, and a third signal is sent;
when the branch switch protection is operated and the protection of the adjacent power point switch is not operated, the intelligent distributed system is locked and directly jumps the branch switch to send a third signal.
3. The method for preventing an intelligent distributed system anomaly as recited in claim 2, wherein: after the information is confirmed, the intelligent distributed system enters fault judgment and export logic.
4. A method of preventing an intelligent distributed system anomaly as recited in claim 3, wherein: when all switches participating in the intelligent distributed system on the loop are in the closed position, the intelligent distributed system sends an alarm signal of abnormal position of the interconnection switch.
5. The method for preventing an intelligent distributed system anomaly as recited in claim 4, wherein: aiming at two points of faults, when the fault points are on two sides of the tie switch, a positioning isolation method is adopted for processing, and the tie switch is not switched on for times; when the fault point is on one side of the tie switch, a single fault point mode is adopted for processing.
6. The method for preventing an intelligent distributed system anomaly as recited in claim 5, wherein: and processing the fault isolation to be close to the power supply point by adopting a single fault point mode, and isolating a second fault point far away from the power supply point after the interconnection switch recovers power supply.
7. The method for preventing an intelligent distributed system anomaly as recited in claim 6, wherein: the bending piece (202) further comprises a fourth cylinder (202 e) arranged on the bottom surface of the first auxiliary plate (201 b), and a first track groove (101) matched with the fourth cylinder (202 e) is formed in the inner bottom surface of the box body (100).
8. The method for preventing an intelligent distributed system anomaly as recited in claim 7, wherein: the rotating member (201) further includes a second auxiliary plate (201 g), and the second auxiliary plate (201 g) connects the second cylinder (201 c) and the third cylinder (202 a).
9. The method for preventing an intelligent distributed system anomaly as recited in claim 8, wherein: the electric conduction piece (203) comprises a first electric conduction plate (203 a) fixed on the inner side surface of the box body (100), a second electric conduction plate (203 b) in sliding fit with the first electric conduction plate (203 a), and springs (203 c) arranged in the first electric conduction plate (203 a) and connected with the two second electric conduction plates (203 b), wherein the two second electric conduction plates (203 b) are respectively arranged at two ends of the first electric conduction plate (203 a), T-shaped protrusions (203 b-1) are arranged on the second electric conduction plate (203 b), second track grooves (203 a-1) for the second electric conduction plate (203 b) to move are formed in the first electric conduction plate (203 a), and the T-shaped protrusions (203 b-1) are matched with the second track grooves (203 a-1).
10. The method for preventing an intelligent distributed system anomaly as recited in claim 9, wherein: the box body (100) is internally provided with a middle plate (102), and the middle plate (102) is provided with a third track groove (102 a) for the third cylinder (202 a) to rotate and a fourth track groove (102 b) for the L-shaped rod (202 c) to rotate.
11. The method for preventing an intelligent distributed system anomaly as recited in claim 10, wherein: the wiring unit (200) further comprises bearing plates (204) arranged on two sides of the second auxiliary plate (201 g), and arc grooves (204 a) are formed in the bearing plates (204).
12. The method for preventing an intelligent distributed system anomaly as recited in claim 11, wherein: the first clamping wheel (201 d) comprises a top plate (201 d-1), a connecting column (201 d-2) and a bottom plate (201 d-3), wherein the connecting column (201 d-2) is connected with the top plate (201 d-1) and the bottom plate (201 d-3), the top plate (201 d-1) is an arc plate, and the arc length of the top plate (201 d-1) is smaller than half of the circumference of a finished circle.
13. The method for preventing an intelligent distributed system anomaly as recited in claim 12, wherein: a plurality of ratchets (201 d-21) are arranged on the connecting column (201 d-2), and the ratchets (201 d-21) are arranged corresponding to the top plate (201 d-1).
14. The method for preventing an intelligent distributed system anomaly as recited in claim 13, wherein: a fifth track groove (201 d-31) is formed in the bottom of the bottom plate (201 d-3), and a limit column (201 g-1) matched with the fifth track groove (201 d-31) is arranged on the second auxiliary plate (201 g).
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| WO2017135267A1 (en) * | 2016-02-02 | 2017-08-10 | 矢崎総業株式会社 | Circuit body for vehicle |
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| WO2017135267A1 (en) * | 2016-02-02 | 2017-08-10 | 矢崎総業株式会社 | Circuit body for vehicle |
| CN107069676A (en) * | 2016-12-09 | 2017-08-18 | 国家电网公司 | Power distribution network fault positioning and rapid isolation recovery control method |
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