CN113471968A - Power distribution network fault processing method based on system decomposition - Google Patents
Power distribution network fault processing method based on system decomposition Download PDFInfo
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- CN113471968A CN113471968A CN202110875893.4A CN202110875893A CN113471968A CN 113471968 A CN113471968 A CN 113471968A CN 202110875893 A CN202110875893 A CN 202110875893A CN 113471968 A CN113471968 A CN 113471968A
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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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/001—Methods to deal with contingencies, e.g. abnormalities, faults or failures
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Abstract
The invention provides a power distribution network fault processing method based on system decomposition, which comprises the following steps: firstly, acquiring a specific fault occurrence power element; secondly, searching along each direction of normal tide of the power element with the fault, terminating diffusion in the direction when the power element meets a breaker or reaches the tail end of a line, disconnecting the first breaker appearing in any direction, and splitting the power distribution network into a plurality of subsystems; thirdly, traversing search is carried out by taking the power element with the fault as a starting point again, when the power element meets an isolating switch, a line tail end or a disconnected circuit breaker, the search in the direction is terminated, the first isolating switch appearing in any direction is disconnected, and the system is further disconnected; and finally, analyzing according to different subsystems. The invention provides a power distribution network fault processing method based on system decomposition, which can carry out power supply processing according to different actual conditions of subsystems and ensure the power supply of important equipment.
Description
Technical Field
The invention belongs to the technical field of power control, and particularly relates to a power distribution network fault processing method based on system decomposition.
Background
For a power distribution network system containing important equipment, when a power element in the power distribution network fails, the affected subsystem needs to be analyzed and judged so as to ensure that the subsystem containing the important equipment can provide power in time to ensure the power supply of the important equipment, and prevent further failure from occurring and causing more serious economic loss.
The invention provides a power distribution network fault processing method based on system decomposition, which takes a fault occurrence power element as a starting point, and carries out classification judgment processing on affected subsystems according to the actual conditions of respective power supply so as to ensure the power supply of important equipment.
Disclosure of Invention
The invention provides a power distribution network fault processing method based on system decomposition, which can carry out power supply processing according to different actual conditions of subsystems and ensure the power supply of important equipment.
The invention specifically relates to a power distribution network fault processing method based on system decomposition, which comprises the following steps:
step (1): acquiring a specific fault occurrence power element;
step (2): searching along each direction of normal tide of the power element with the fault, terminating diffusion in the direction when the power element meets a breaker or reaches the tail end of a line, disconnecting the first breaker appearing in any direction, and splitting the power distribution network into a plurality of subsystems;
and (3): traversing search is carried out by taking the power element with the fault as a starting point again, when the disconnecting switch, the tail end of the line or the breaker disconnected in the step (2) is met, the search in the direction is terminated, the first disconnecting switch appearing in any direction is disconnected, and the system is further disconnected;
and (4): judging whether the split subsystem is directly connected with other conventional power supplies or not, and if so, not needing to operate; if not, entering the step (5);
and (5): judging whether the split subsystem can be connected with the conventional power supply through switch operation, if so, controlling the conventional power supply to supply power to the subsystem; if not, entering the step (6);
and (6): judging whether the split subsystem is connected with energy storage equipment or not, if so, entering the step (7); if not, entering the step (10);
and (7): cutting off non-important loads and ensuring the power supply of important loads;
and (8): collecting the electric energy of the energy storage equipment and the working power of the important load;
and (9): calculating the maximum power supply time of the energy storage equipment, and carrying out specific alarm display;
step (10): judging whether the split subsystem has equipment which is in urgent need of power supply, and if so, informing a worker to supply power as soon as possible; if not, go to step (11).
Step (11): and checking whether the disconnected subsystems are abnormal or not, waiting for the power element with the fault to eliminate the fault, and supplying power again.
And judging whether the energy storage equipment is connected with other power supplies, and if so, determining the maximum power supply time of the energy storage equipment by combining the other power supplies.
And the other power sources are direct current power distribution or photovoltaic power generation or wind power generation.
Compared with the prior art, the beneficial effects are: the power distribution network fault processing method takes a fault occurrence power element as a starting point, and carries out classification judgment processing on the affected subsystems according to the actual power supply conditions of the subsystems so as to ensure the power supply of important equipment.
Drawings
Fig. 1 is a flowchart of a power distribution network fault processing method based on system decomposition according to the present invention.
Detailed Description
The following describes in detail a specific embodiment of a method for processing a fault of a power distribution network based on system decomposition according to the present invention with reference to the accompanying drawings.
As shown in fig. 1, the method for processing the fault of the power distribution network of the present invention includes the following steps:
step (1): acquiring a specific fault occurrence power element;
step (2): searching along each direction of normal tide of the power element with the fault, terminating diffusion in the direction when the power element meets a breaker or reaches the tail end of a line, disconnecting the first breaker appearing in any direction, and splitting the power distribution network into a plurality of subsystems;
and (3): traversing search is carried out by taking the power element with the fault as a starting point again, when the disconnecting switch, the tail end of the line or the breaker disconnected in the step (2) is met, the search in the direction is terminated, the first disconnecting switch appearing in any direction is disconnected, and the system is further disconnected;
and (4): judging whether the split subsystem is directly connected with other conventional power supplies or not, and if so, not needing to operate; if not, entering the step (5);
and (5): judging whether the split subsystem can be connected with the conventional power supply through switch operation, if so, controlling the conventional power supply to supply power to the subsystem; if not, entering the step (6);
and (6): judging whether the split subsystem is connected with energy storage equipment or not, if so, entering the step (7); if not, entering the step (10);
and (7): cutting off non-important loads and ensuring the power supply of important loads;
and (8): collecting the electric energy of the energy storage equipment and the working power of the important load;
and (9): calculating the maximum power supply time of the energy storage equipment, and carrying out specific alarm display;
step (10): judging whether the split subsystem has equipment which is in urgent need of power supply, and if so, informing a worker to supply power as soon as possible; if not, go to step (11).
Step (11): and checking whether the disconnected subsystems are abnormal or not, waiting for the power element with the fault to eliminate the fault, and supplying power again.
Judging whether the energy storage equipment is connected with other power supplies, if so, determining the maximum power supply time of the energy storage equipment by combining the other power supplies: firstly, judging whether the other power supplies can continuously supply power to the disconnected subsystems, and then judging whether the important load can be ensured to supply power; and if the power supply for the disconnected subsystems cannot be continuously supplied or the important loads can be ensured to be supplied, calculating the maximum power supply time, and carrying out specific alarm display.
The other power sources are direct current power distribution, photovoltaic power generation, wind power generation and the like.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (3)
1. A power distribution network fault processing method based on system decomposition is characterized by comprising the following steps:
step (1): acquiring a specific fault occurrence power element;
step (2): searching along each direction of normal tide of the power element with the fault, terminating diffusion in the direction when the power element meets a breaker or reaches the tail end of a line, disconnecting the first breaker appearing in any direction, and splitting the power distribution network into a plurality of subsystems;
and (3): traversing search is carried out by taking the power element with the fault as a starting point again, when the disconnecting switch, the tail end of the line or the breaker disconnected in the step (2) is met, the search in the direction is terminated, the first disconnecting switch appearing in any direction is disconnected, and the system is further disconnected;
and (4): judging whether the split subsystem is directly connected with other conventional power supplies or not, and if so, not needing to operate; if not, entering the step (5);
and (5): judging whether the split subsystem can be connected with the conventional power supply through switch operation, if so, controlling the conventional power supply to supply power to the subsystem; if not, entering the step (6);
and (6): judging whether the split subsystem is connected with energy storage equipment or not, if so, entering the step (7); if not, entering the step (10);
and (7): cutting off non-important loads and ensuring the power supply of important loads;
and (8): collecting the electric energy of the energy storage equipment and the working power of the important load;
and (9): calculating the maximum power supply time of the energy storage equipment, and carrying out specific alarm display;
step (10): judging whether the split subsystem has equipment which is in urgent need of power supply, and if so, informing a worker to supply power as soon as possible; if not, go to step (11).
Step (11): and checking whether the disconnected subsystems are abnormal or not, waiting for the power element with the fault to eliminate the fault, and supplying power again.
2. The method according to claim 1, wherein the method is characterized in that whether the energy storage device is connected with other power sources is judged, and if yes, the maximum power supply time of the energy storage device is determined by combining the other power sources.
3. The method for processing the faults of the power distribution network based on the system decomposition as claimed in claim 2, wherein the other power sources are direct current power distribution or photovoltaic power generation or wind power generation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110875893.4A CN113471968A (en) | 2021-07-30 | 2021-07-30 | Power distribution network fault processing method based on system decomposition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110875893.4A CN113471968A (en) | 2021-07-30 | 2021-07-30 | Power distribution network fault processing method based on system decomposition |
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| Publication Number | Publication Date |
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| CN113471968A true CN113471968A (en) | 2021-10-01 |
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| CN202110875893.4A Pending CN113471968A (en) | 2021-07-30 | 2021-07-30 | Power distribution network fault processing method based on system decomposition |
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| CN (1) | CN113471968A (en) |
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2021
- 2021-07-30 CN CN202110875893.4A patent/CN113471968A/en active Pending
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