CN114142445A - Electrical operation trial sending method for preventing fault amplification - Google Patents
Electrical operation trial sending method for preventing fault amplification Download PDFInfo
- Publication number
- CN114142445A CN114142445A CN202111417959.1A CN202111417959A CN114142445A CN 114142445 A CN114142445 A CN 114142445A CN 202111417959 A CN202111417959 A CN 202111417959A CN 114142445 A CN114142445 A CN 114142445A
- Authority
- CN
- China
- Prior art keywords
- fault
- piece
- adjacent
- electrical operation
- switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 36
- 230000003321 amplification Effects 0.000 title abstract description 7
- 238000003199 nucleic acid amplification method Methods 0.000 title abstract description 7
- 230000002265 prevention Effects 0.000 claims description 23
- 238000002716 delivery method Methods 0.000 claims 2
- 239000000203 mixture Substances 0.000 claims 1
- 239000002994 raw material Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 8
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 206010033799 Paralysis Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012552 review Methods 0.000 description 1
Images
Classifications
-
- 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
Abstract
The invention discloses an electric operation trial sending method for preventing fault expansion, which comprises the steps of determining a fault point, respectively placing adjacent non-switches at a closed position, detecting whether the adjacent switches placed at the closed position have faults or not, and judging the position of the fault position; if the adjacent switch in the closed position is detected to have a fault, judging whether the fault is positioned at a left side node or a right side node; and if the adjacent switch arranged in the closed position detects a fault, judging whether the fault is positioned at a left side node or a right side node. The electric operation trial sending method for preventing fault amplification can quickly find out the fault position, isolate the fault, reduce the power failure area and enable the non-fault position to normally supply power.
Description
Technical Field
The invention relates to the technical field of power systems, in particular to an electric operation trial sending method for preventing fault amplification.
Background
The distribution network is an electric power network which receives electric energy from a transmission network or a regional power plant, distributes the electric energy locally through distribution facilities or distributes the electric energy to various users step by step according to voltage, and plays a role in distributing the electric energy in the electric power network. According to statistics, more than 85% of fault power failure is caused by the fault of the power distribution network, so that the power distribution network fault processing technology has important significance for improving the power supply reliability. If the faults in the power distribution network cannot be timely removed, the regional power supply is greatly affected, and the whole power distribution network can be seriously paralyzed and cannot work normally.
Disclosure of Invention
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and the title of the invention of this application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.
The present invention has been made in view of the above and/or problems occurring in the conventional method for preventing the fault propagation.
Therefore, the invention aims to solve the problems that the fault is not found timely, the fault is enlarged, and the power supply is influenced.
In order to solve the technical problems, the invention provides the following technical scheme: an electrical operation commissioning method to prevent fault propagation comprising:
determining a fault point, respectively placing adjacent switches in a closed position, detecting whether the adjacent switches in the closed position have faults or not, and judging the positions of the fault positions;
if the adjacent switch in the closed position is detected to have a fault, judging whether the fault is positioned at a left side node or a right side node;
and if the adjacent switch arranged in the closed position detects a fault, judging whether the fault is positioned at a left side node or a right side node.
As a preferable aspect of the fault propagation prevention electric operation trial sending method of the present invention, wherein: the adjacent switch placed in the closed position is detected to be in fault, and the fault position comprises,
if all adjacent closed switches on the left side of the adjacent switch do not detect faults, the faults are located on a left node of the adjacent switch;
and if all the adjacent closed switches on the right side of the adjacent switch do not detect the fault, the fault is positioned on the right side node of the adjacent switch.
As a preferable aspect of the fault propagation prevention electric operation trial sending method of the present invention, wherein: the adjacent switch that is in the closed position is not detected to be faulty, including,
if one and only one switch on the left side of the adjacent switch detects a fault, the fault is located at a left node of the adjacent switch;
and if the right side of the adjacent switch has and only one switch detects the fault, the fault is positioned at the right side node of the adjacent switch.
As a preferable aspect of the fault propagation prevention electric operation trial sending method of the present invention, wherein: the system for preventing the fault from being enlarged comprises a 220kV transformer, a 110kV transformer and a ring main unit, wherein the ring main unit is connected between the 220kV transformer and the 110kV transformer.
As a preferable aspect of the fault propagation prevention electric operation trial sending method of the present invention, wherein: the system for preventing the fault from being enlarged further comprises a connecting assembly, wherein the connecting assembly connects the 220kV transformer with the ring main unit and the ring main unit with the 110kV transformer.
As a preferable aspect of the fault propagation prevention electric operation trial sending method of the present invention, wherein: the connecting assembly comprises a first piece, a second piece and a sleeve, wherein the first piece and the second piece are respectively arranged on two sides of the sleeve.
As a preferable aspect of the fault propagation prevention electric operation trial sending method of the present invention, wherein: the sleeve is internally provided with a connecting piece, and the two ends of the connecting piece are respectively provided with the first piece and the second piece.
As a preferable aspect of the fault propagation prevention electric operation trial sending method of the present invention, wherein: the connecting piece comprises a first abutting piece, a second abutting piece and an elastic rod, and the first abutting piece and the second abutting piece are arranged at two ends of the elastic rod respectively.
As a preferable aspect of the fault propagation prevention electric operation trial sending method of the present invention, wherein: and a spring is arranged between the first abutting part and the second abutting part, and two ends of the spring are respectively connected with the first abutting part and the second abutting part.
As a preferable aspect of the fault propagation prevention electric operation trial sending method of the present invention, wherein: the elastic rod comprises a first rod and a second rod, and the first rod is fixedly connected with the second rod at an angle.
As a preferable aspect of the fault propagation prevention electric operation trial sending method of the present invention, wherein: a groove is formed in one side of the first piece and matched with the first abutting piece.
As a preferable aspect of the fault propagation prevention electric operation trial sending method of the present invention, wherein: and a tension spring is arranged in the middle of the second part.
As a preferable aspect of the fault propagation prevention electric operation trial sending method of the present invention, wherein: one side of the second piece is provided with a first clamping tooth, a gear is arranged in the sleeve, and the first clamping tooth is meshed with the gear.
As a preferable aspect of the fault propagation prevention electric operation trial sending method of the present invention, wherein: a clamping groove is further formed in one side of the sleeve, a second clamping tooth is arranged on one side of the clamping groove, and the second clamping tooth is meshed with the gear.
The invention has the beneficial effects that: the electric operation trial sending method for preventing fault amplification can quickly find out the fault position, isolate the fault, reduce the power failure area and enable the non-fault position to normally supply power.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:
fig. 1 is a logic block diagram according to an embodiment of the present invention.
Fig. 2 is a diagram of a power distribution automation system according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of a connection between a 220kV transformer and a ring main unit according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of a connection between the ring main unit and the ring main unit according to an embodiment of the present invention.
Fig. 5 is a schematic diagram of a connection between a 110kV transformer and a ring main unit according to an embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a connection assembly according to an embodiment of the present invention.
Fig. 7 is a schematic cross-sectional structure view of a connection assembly according to an embodiment of the present invention.
Fig. 8 is a schematic structural diagram of a connector according to an embodiment of the present invention.
Fig. 9 is a schematic structural diagram of a first component according to an embodiment of the present invention.
Fig. 10 is a schematic structural view of a second member according to an embodiment of the present invention.
Fig. 11 is a schematic structural view of a latch and a gear according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Furthermore, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the invention. 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 and 2, the embodiment provides an electrical operation commissioning method for preventing fault propagation, including:
s1: and determining a fault point, respectively placing adjacent switches in a closed position, detecting whether the adjacent switches placed in the closed position have faults or not, and judging the positions of the fault positions.
S2: and if the adjacent switch arranged in the closed position detects a fault, judging whether the fault is positioned at a left side node or a right side node. It should be noted that:
the adjacent switch placed in the closed position is detected to be in fault, and the fault position comprises,
if all adjacent closed switches on the left side of the adjacent switch do not detect faults, the faults are located on a left node of the adjacent switch;
and if all the adjacent closed switches on the right side of the adjacent switch do not detect the fault, the fault is positioned on the right side node of the adjacent switch.
S3: and if the adjacent switch arranged in the closed position detects a fault, judging whether the fault is positioned at a left side node or a right side node. It should be noted that:
the adjacent switch that is in the closed position is not detected to be faulty, including,
if one and only one switch on the left side of the adjacent switch detects a fault, the fault is located at a left node of the adjacent switch;
and if the right side of the adjacent switch has and only one switch detects the fault, the fault is positioned at the right side node of the adjacent switch.
As shown in fig. 2, F1, F2, and F6 are specifically described.
(1) Point F1 fails.
If the switch 1 is in the closed position and the protection device acts, the adjacent switch on the right side is the switch 2, the switch 2 is in the closed position and the relay protection device does not act, and the positioning condition that all closed switches adjacent on the right side do not detect faults is met, so that the faults are positioned on the right side of the switch 1; it has no adjacent switch on its left side.
If the switch 2 is in the closed position and the protection device does not act, the adjacent switch on the left side is the switch 1, and if the switch 1 is in the closed position and the protection device acts, the positioning condition that all closed switches on the left side are adjacent and only one switch detects a fault is met, so that the fault is positioned on the left side of the switch 2.
(2) Point F2 fails.
If the switch 2 is in the closed position and the protection device acts, the adjacent switch on the left side of the switch is the switch 1, the switch 1 is in the closed position and the protection device acts, the positioning condition that all closed switches adjacent to the left side do not detect faults is not met, and therefore the fault position is not on the left side of the switch 2; the adjacent switches on the right side are switches 3 and 7, the switches 3 and 7 are in the closed position, the protection device does not act, the positioning condition that all closed switches adjacent on the right side do not detect faults is met, and therefore the faults are located on the right side of the switch 2.
If the switch 3 is in the closed position and the protection device does not act, the adjacent switches on the left side are the switches 2 and 7, the switch 2 is in the closed position and the protection device acts, the switch 7 is in the closed position and the protection device does not act, and the positioning condition that all closed switches on the left side are adjacent and only one switch detects a fault is met, so that the fault is positioned on the left side of the switch 3.
(3) Point F6 fails.
If the switch 7 is in the closed position and the protection device acts, the adjacent switches on the right side are the switches 2, 3 and 8, the switches 2, 3 and 8 are in the closed position and the protection device of the switch 2 acts, the positioning condition that all closed switches adjacent on the right side do not detect faults is not met, and therefore the fault point is not on the right side of the switch 7. Its left adjacent switch does not. The fault point is now determined to be to the left of switch 7.
It should be noted that: the principle of F3 and F5 fault points is the same as that of the F1 point, and the principle of the F4 fault point is the same as that of the F2 point.
The electric operation trial sending method for preventing fault amplification can quickly find out the fault position, isolate the fault, reduce the power failure area and enable the non-fault position to normally supply power.
Example 2
Referring to fig. 3 to 11, the present embodiment is different from the previous embodiment in that:
the system for preventing the fault from being enlarged comprises a 220kV transformer 101, a 110kV transformer 102 and a ring main unit 103, wherein the ring main unit 103 is connected between the 220kV transformer 101 and the 110kV transformer 102.
The system for preventing fault amplification further comprises a connecting assembly 200, wherein the connecting assembly 200 connects the 220kV transformer 101 with the ring main unit 103, and the ring main unit 103 with the 110kV transformer 102.
The connection assembly 200 includes a first member 201, a second member 202, and a sleeve 203, wherein the first member 201 and the second member 202 are respectively disposed on both sides of the sleeve 203.
The sleeve 203 is provided with a connecting member 204 inside, and the two ends of the connecting member 204 are respectively provided with a first member 201 and a second member 202.
Preferably, second member 202 is threadably connected to sleeve 203 at one end thereof to deliver first member 201 into sleeve 203.
The connecting member 204 includes a first abutting member 204a, a second abutting member 204b and an elastic rod 204c, wherein the first abutting member 204a and the second abutting member 204b are respectively disposed at two ends of the elastic rod 204 c.
One side of the sleeve 203 is also provided with a clamping groove 203 b.
Further, the first part 201 is sent into the sleeve 203 from one end of the sleeve 203, the elastic rod 204c receives the pushing force of the first part 201 and moves towards the direction of the second part 202, when the elastic rod 204c moves to the clamping groove 203b, the elastic rod 204c is stressed to deform, the upward protrusion of the elastic rod 203b is clamped in the clamping groove 203b, at the moment, the first part 201 is abutted to the second part 202, and the circuit is communicated.
A spring 204d is arranged between the first abutting piece 204a and the second abutting piece 204b, and two ends of the spring 204d are respectively connected with the first abutting piece 204a and the second abutting piece 204 b.
The elastic rod 204c comprises a first rod 204c-1 and a second rod 204c-2, and the first rod 204c-1 is fixedly connected with the second rod 204c-2 at an angle.
Still further, when the first member 201 contacts the first abutting member 204a and continues to push the first member 201, the elastic rod 204C is forced to move toward the second rod 202, and when the elastic rod 204C moves to the position of the slot 203b, the elastic rod 204C is forced to elastically deform, and the joint C between the first rod 204C-1 and the second rod 204C-2 is clamped by the slot 203 b.
The first member 201 is provided with a groove 201a at one side, and the groove 201a is matched with the first abutting piece 204 a.
Further, when the joint C between the first rod 204C-1 and the second rod 204C-2 is caught by the catching groove 203b, the elastic rod 204C moves toward the catching groove 203b, the groove 201a on one side of the first member 201 is caught by the first abutting member 204a, and the first member 201 is completely connected with the second member 202.
A tension spring 202a is also provided in the middle of the second member 202.
The second member 202 has a first latch 202b on one side, a gear 203a in the sleeve 203, and the first latch 202b is engaged with the gear 203 a.
One side of the slot 203b is provided with a second latch 203c, and the second latch 203c is meshed with the gear 203 a.
Preferably, when the first member 201 needs to be separated from the second member 202, the first member 201 is continuously pushed toward the second member 202, the tension spring 202a in the second member 202 is compressed by the pushing force, the first latch 202b drives the gear 203a to rotate, so that the second latch 203b moves toward the first member 201, when the second latch 203b contacts the inclined surface of the elastic rod 204c, the elastic rod 204c is deformed by the force, the elastic rod 204c is disengaged from the slot 203b, and meanwhile, the first abutting member 204a is away from the groove 201a on one side of the first member 201, and the first member 201 is pulled toward the direction away from the second member 202, so that the first member 201 can be separated from the second member 202, it should be noted that one side of the second latch 203b is disposed in a sliding groove in the sleeve 203, and the second latch 203b moves in the sliding groove along with the rotation of the gear 203 a.
When the first abutting part 304a is connected with the first part 201, the first part 201 is pushed to move towards the second part 202 under the stress, when the first part 201 is in contact with the first abutting part 304a, the elastic rod 204C is elastically deformed under the stress, the connecting part C of the first rod 204C-1 and the second rod 204C-2 is clamped by the clamping groove 203b, meanwhile, the groove 201a on one side of the first part 201 is clamped by the elastic rod 204C, and the first part 201 is connected with the second part 202; when the line needs to be overhauled, the first part 201 and the second part 202 are separated, the first part 201 is continuously pushed towards the direction of the second part 202, the tension spring 202a in the second part 202 is compressed by the thrust, the first latch 202b drives the gear 203a to rotate, so that the second latch 203b moves towards the direction of the first part 201, when the second latch 203b contacts the inclined surface of the elastic rod 204c, the elastic rod 204c is deformed by the stress, the elastic rod 204c is separated from the clamping groove 203b, the first abutting part 204a is separated from the groove 201a on one side of the first part 201, the first part 201 is pulled outwards, and then the first part 201 is separated from the second part 202.
It is important to note that the construction and arrangement of the present application as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperatures, pressures, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter recited in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of this invention. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present inventions. Therefore, the present invention is not limited to a particular embodiment, but extends to various modifications that nevertheless fall within the scope of the appended claims.
Moreover, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those unrelated to the presently contemplated best mode of carrying out the invention, or those unrelated to enabling the invention).
It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure, without undue experimentation.
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (14)
1. An electrical operation trial delivery method for preventing fault propagation, characterized by: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
determining a fault point, respectively placing adjacent switches in a closed position, detecting whether the adjacent switches in the closed position have faults or not, and judging the positions of the fault positions;
if the adjacent switch in the closed position is detected to have a fault, judging whether the fault is positioned at a left side node or a right side node;
and if the adjacent switch which is arranged in the closed position does not detect the fault, judging whether the fault is positioned at the left side node or the right side node.
2. The fault propagation prevention electrical operation commissioning method as recited in claim 1, wherein: the adjacent switch placed in the closed position is detected to be in fault, and the fault position comprises,
if all adjacent closed switches on the left side of the adjacent switch do not detect faults, the faults are located on a left node of the adjacent switch;
and if all the adjacent closed switches on the right side of the adjacent switch do not detect the fault, the fault is positioned on the right side node of the adjacent switch.
3. The fault propagation prevention electrical operation commissioning method as recited in claim 2, wherein: the adjacent switch placed in the closed position is detected to be in fault, and the fault position comprises,
if one and only one switch on the left side of the adjacent switch detects a fault, the fault is located at a left node of the adjacent switch;
and if the right side of the adjacent switch has and only one switch detects the fault, the fault is positioned at the right side node of the adjacent switch.
4. An electric operation trial delivery method for preventing fault propagation according to any one of claims 1 to 3, characterized in that: the system for preventing the fault from being enlarged comprises a 220kV transformer (101), a 110kV transformer (102) and a ring main unit (103), wherein the ring main unit (103) is connected between the 220kV transformer (101) and the 110kV transformer (102).
5. The fault propagation prevention electrical operation commissioning method as recited in claim 4, wherein: the system for preventing the fault from being enlarged further comprises a connecting assembly (200), wherein the connecting assembly (200) connects the 220kV transformer (101) with the ring main unit (103), and the ring main unit (103) with the 110kV transformer (102).
6. The fault propagation prevention electrical operation commissioning method as recited in claim 5, wherein: the connecting assembly (200) comprises a first piece (201), a second piece (202) and a sleeve (203), wherein the first piece (201) and the second piece (202) are respectively arranged on two sides of the sleeve (203).
7. The fault propagation prevention electrical operation commissioning method as recited in claim 6, wherein: a connecting piece (204) is arranged in the sleeve (203), and the first piece (201) and the second piece (202) are respectively arranged at two ends of the connecting piece (204).
8. The fault propagation prevention electrical operation commissioning method as recited in claim 7, wherein: the connecting piece (204) comprises a first abutting piece (204a), a second abutting piece (204b) and an elastic rod (204c), wherein the first abutting piece (204a) and the second abutting piece (204b) are respectively arranged at two ends of the elastic rod (204 c).
9. The fault propagation prevention electrical operation commissioning method as recited in claim 8, wherein: a spring (204d) is arranged between the first abutting piece (204a) and the second abutting piece (204b), and two ends of the spring (204d) are respectively connected with the first abutting piece (204a) and the second abutting piece (204 b).
10. The electrical operation trial sending method for preventing fault propagation according to claim 8 or 9, characterized in that: the elastic rod (204c) comprises a first rod (204c-1) and a second rod (204c-2), and the first rod (204c-1) and the second rod (204c-2) are fixedly connected at an angle.
11. The fault propagation prevention electrical operation commissioning method as recited in claim 10, wherein: one side of the first piece (201) is provided with a groove (201a), and the groove (201a) is matched with the first abutting part (204 a).
12. The electrical operation trial sending method for preventing fault propagation according to any one of claims 6 to 9, wherein: the middle part of the second piece (202) is also provided with a tension spring (202 a).
13. The fault propagation prevention electrical operation commissioning method as recited in claim 12, wherein: one side of the second piece (202) is provided with a first latch (202b), a gear (203a) is arranged in the sleeve (203), and the first latch (202b) is meshed with the gear (203 a).
14. The fault propagation prevention electrical operation commissioning method as recited in claim 13, wherein: a clamping groove (203b) is further formed in one side of the sleeve (203), a second clamping tooth (203c) is arranged on one side of the clamping groove (203b), and the second clamping tooth (203c) is meshed with the gear (203 a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111417959.1A CN114142445B (en) | 2021-11-26 | 2021-11-26 | Electrical operation test-feeding method for preventing fault expansion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111417959.1A CN114142445B (en) | 2021-11-26 | 2021-11-26 | Electrical operation test-feeding method for preventing fault expansion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114142445A true CN114142445A (en) | 2022-03-04 |
| CN114142445B CN114142445B (en) | 2024-04-05 |
Family
ID=80387806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111417959.1A Active CN114142445B (en) | 2021-11-26 | 2021-11-26 | Electrical operation test-feeding method for preventing fault expansion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114142445B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005746A (en) * | 2010-11-30 | 2011-04-06 | 南京南瑞继保电气有限公司 | Method based on topology protection of distributing network |
| CN102332710A (en) * | 2011-09-04 | 2012-01-25 | 金昌平 | High-performance voltage timelike distribution automation terminal |
| CN104638618A (en) * | 2015-02-11 | 2015-05-20 | 国网山东省电力公司潍坊供电公司 | Method for quickly recovering power supply of GIS bus device after tripping |
| CN106026052A (en) * | 2016-07-28 | 2016-10-12 | 国家电网公司 | Fault processing method and device of feeder automation system under switchgear malfunction condition |
| CN106058831A (en) * | 2016-08-05 | 2016-10-26 | 江苏方天电力技术有限公司 | Intelligent distributed rapid protection and fault isolation method of self-adaptive power distribution network |
| CN106501674A (en) * | 2016-10-24 | 2017-03-15 | 国网福建省电力有限公司 | Medium voltage distribution network single-phase earth fault positioning device and its Fault Locating Method |
| CN107800121A (en) * | 2016-09-07 | 2018-03-13 | 南京南瑞继保电气有限公司 | A kind of Distributed power line protection method |
| CN108667004A (en) * | 2018-04-03 | 2018-10-16 | 国家电网公司 | The failure analysis method and device of distribution line |
| CN112531653A (en) * | 2020-11-06 | 2021-03-19 | 国网山东省电力公司阳信县供电公司 | Distribution network fault management method based on distribution automation |
| CN112540259A (en) * | 2020-11-05 | 2021-03-23 | 威胜电气有限公司 | Distribution network disconnection fault identification method and system suitable for intelligent power distribution terminal |
-
2021
- 2021-11-26 CN CN202111417959.1A patent/CN114142445B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005746A (en) * | 2010-11-30 | 2011-04-06 | 南京南瑞继保电气有限公司 | Method based on topology protection of distributing network |
| CN102332710A (en) * | 2011-09-04 | 2012-01-25 | 金昌平 | High-performance voltage timelike distribution automation terminal |
| CN104638618A (en) * | 2015-02-11 | 2015-05-20 | 国网山东省电力公司潍坊供电公司 | Method for quickly recovering power supply of GIS bus device after tripping |
| CN106026052A (en) * | 2016-07-28 | 2016-10-12 | 国家电网公司 | Fault processing method and device of feeder automation system under switchgear malfunction condition |
| CN106058831A (en) * | 2016-08-05 | 2016-10-26 | 江苏方天电力技术有限公司 | Intelligent distributed rapid protection and fault isolation method of self-adaptive power distribution network |
| CN107800121A (en) * | 2016-09-07 | 2018-03-13 | 南京南瑞继保电气有限公司 | A kind of Distributed power line protection method |
| CN106501674A (en) * | 2016-10-24 | 2017-03-15 | 国网福建省电力有限公司 | Medium voltage distribution network single-phase earth fault positioning device and its Fault Locating Method |
| CN108667004A (en) * | 2018-04-03 | 2018-10-16 | 国家电网公司 | The failure analysis method and device of distribution line |
| CN112540259A (en) * | 2020-11-05 | 2021-03-23 | 威胜电气有限公司 | Distribution network disconnection fault identification method and system suitable for intelligent power distribution terminal |
| CN112531653A (en) * | 2020-11-06 | 2021-03-19 | 国网山东省电力公司阳信县供电公司 | Distribution network fault management method based on distribution automation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114142445B (en) | 2024-04-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206331958U (en) | Double-fracture disconnecting switch module | |
| CN101562100B (en) | A spring discharge mechanism for circuit breaker | |
| CN106373821A (en) | Double-break disconnector switch module | |
| US20100015829A1 (en) | Separable Loadbreak Connector and System for Reducing Damage Due to Fault Closure | |
| AU2008242550A1 (en) | Device and method for latching separable insulated connectors | |
| CN114142445A (en) | Electrical operation trial sending method for preventing fault amplification | |
| EP1145253A3 (en) | Protected superconducting component and method for producing the same | |
| CN105932481A (en) | Quick-connect terminal for electrical circuit | |
| CN103996987A (en) | Direct-current circuit breaker handcart large-current one-time connector assembly | |
| CN103931055A (en) | Plug-type connection | |
| CN211700115U (en) | Novel two-station and three-station load switch of inflatable cabinet | |
| CN112421757B (en) | Relay system and protection method based on feeder automatic switching | |
| CN204117866U (en) | For the fixed contact of rotary combined electrical apparatus isolation, earthed switch | |
| CN114039408A (en) | FTU with emergency power supply | |
| CN204012374U (en) | Connector of the large electric current of handcart of direct-current circuit breaker | |
| CN216082869U (en) | Test wiring test needle for circuit breaker | |
| CN112117154B (en) | Integrated bipolar high-voltage isolation knife switch | |
| CN110148862A (en) | A kind of Fast Installation economizing type breakaway connector | |
| CN2805046Y (en) | Device for preventing from error locking | |
| CN216250524U (en) | Locking device for isolating switch | |
| CN210404133U (en) | TNC type cable connector | |
| CN213717086U (en) | Signal clamp plate structure of protection against electric shock | |
| CN217062569U (en) | Reliable communication flat cable | |
| CN206619540U (en) | Switch cabinet grounding switch | |
| CN102097221A (en) | Contact finger |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |