CN113438099A - PCE-based power grid fault path recovery system and method - Google Patents
PCE-based power grid fault path recovery system and method Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
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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
- H02J13/00002—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 characterised by monitoring
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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
- H02J13/00006—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 characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
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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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- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
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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
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
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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
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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Abstract
The invention provides a PCE-based power grid fault path recovery system and a method, wherein the path recovery system comprises a PCE path calculation unit and a path analysis unit, the PCE path calculation unit comprises a fault information receiving module, a recovery path calculation module and a network load monitoring module, the fault information receiving module and the network load monitoring module are both connected with the path recovery calculation module, and the path analysis unit is connected with the recovery path calculation module. The path recovery method specifically includes the steps that fault information is uploaded by a power communication network node after a fault is detected, a plurality of recovery paths to be selected are obtained through calculation according to the fault information, then priority division is carried out on each recovery path to be selected, and finally the recovery path to be selected with the highest priority is selected to serve as the recovery path for solving the fault. The invention can also ensure that the recovery path can be calculated under the condition that the network topology data is incomplete, and the optimal recovery path is selected to ensure the transmission efficiency of the recovered service data.
Description
Technical Field
The invention relates to the technical field of power grid fault path recovery, in particular to a power grid fault path recovery system and a power grid fault path recovery method based on a PCE (path computation element).
Background
The failure recovery efficiency of the power communication network determines the degree of influence of the failure. When a fault occurs in the power communication network, a certain time is usually needed for arranging and executing fault maintenance, and in order to avoid influencing the normal operation of the power network in the fault and fault maintenance processes, another available path which can bypass a fault point is calculated in time after the fault occurs, so that the service borne by the power network communication link influenced by the fault is ensured to be recovered. Most of the existing methods for performing service restoration by reconstructing a path directly apply the calculated available path to the restoration service after calculating the available path, and the path applied to the restoration service is not selected, which may cause problems of low service transmission efficiency and the like. When the network scale is large, the network topology information stored on each network element may not be comprehensive, which may also cause path calculation failure and increase difficulty in service restoration.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a PCE-based power grid fault path recovery system and method.
The purpose of the invention is realized by the following technical scheme:
a power grid fault path recovery system based on a PCE (path computation element) comprises a PCE path computation unit and a path analysis unit, wherein the PCE path computation unit comprises a fault information receiving module, a recovery path computation module and a network load monitoring module, the fault information receiving module is connected with the path recovery computation module and used for receiving fault information uploaded by a fault node, the network load monitoring module is connected with the path analysis unit and used for monitoring load information of all service bearing paths in an electric power communication network, and the recovery path computation module is used for computing and generating a path to be selected; the path analysis unit is connected with the restoration path calculation module and is used for dividing the priority of the restoration path to be selected and selecting the restoration path to be selected with the highest priority as the restoration path.
The PCE is a network element dedicated to path computation, and when receiving a path computation request from a PCC (path computation client), may compute an end-to-end path that satisfies constraints and policies by using existing network topology information. The PCE path calculation unit can calculate the available link according to the fault information and the link corresponding to the fault when the fault occurs, thereby ensuring that the service transmission interrupted by the fault can be recovered in time and reducing the loss caused by the power grid fault. And the network load monitoring module is used for monitoring the load information of the service bearing path in real time, and the monitored information is applied to the subsequent optimal path selection, so that the transmission efficiency is ensured while the established new recovery path meets the service bearing transmission requirement.
Further, the PCE path computation element further includes a network information storage module, where the network information storage module is configured to store network topology information of the power communication network and information related to a service bearer path established in the power communication network.
The recovery path calculation module performs path calculation through the existing network information, so that the calculated recovery path is ensured to be in accordance with the reality, and the service recovery requirement can be met.
Further, the PCE path computation element further includes a restoration path transfer module, the restoration path transfer module is connected to the path analysis element, and the restoration path transfer module is configured to transmit restoration path information selected by the path analysis element to the failed node.
And transmitting the selected recovery path information to a fault node, constructing a new recovery path by the fault node according to the recovery path information, and transferring the service data transmitted in the service bearing path influenced by the fault into the new recovery path for transmission so as to ensure the normal operation of the power grid.
The system further comprises a fault information acquisition unit, wherein the fault information acquisition unit is arranged at a node of the power communication network and is connected with the PCE path calculation unit, and the fault information acquisition unit is used for acquiring fault information and transmitting the fault information to the PCE path calculation unit through the node of the power communication network.
A PCE-based power grid fault path recovery method comprises the following steps:
after detecting that a power communication network has a fault, a power communication network node uploads fault information to a PCE path calculation unit;
step two, a fault information receiving module in the PCE path computing unit receives the fault information, and a recovery path computing module computes a plurality of recovery paths to be selected according to the received fault information;
and step three, the path analysis unit acquires the load information of each path to be recovered through the network load monitoring module, and the path analysis unit performs priority division on each path to be recovered according to the load data of each path to be recovered, and selects the path to be recovered with the highest priority as the recovery path for solving the fault.
The PCE path calculation unit is used for acquiring available restoration paths, and as a plurality of available restoration paths may exist, the calculated available restoration paths are used as restoration paths to be selected, priority division is performed on the restoration paths to be selected, the restoration path to be selected with the highest priority is used as the restoration path, the selected restoration path can meet the service restoration requirement, and the service data transmission efficiency in the selected restoration path is ensured.
Further, the specific process of the restoration path calculation module in the step two calculating the restoration path to be selected according to the received fault information is as follows: the restoration path calculation module extracts the routing information stored in the network information storage module, selects an available route according to the fault information, and selects the available route through a genetic algorithm to construct a path to be selected and restored.
Further, when the restoration path calculation module performs calculation of the restoration path to be selected through a genetic algorithm, the restoration path calculation module stops the calculation when the number of the restoration paths to be selected reaches a preset threshold value.
The recovery path to be selected is calculated through a genetic algorithm, and the calculation of the recovery path can be completed even if the network topology information is incomplete. In addition, in order to ensure the efficiency of service recovery, the number of paths to be recovered is set, so that the service recovery time is prevented from being too long due to too many paths to be selected and too large calculated amount.
Further, in the first step, after the power communication network node detects that the power communication network has a fault, the power communication network node collects network fault information through the fault information collection module, and the fault information collection module also collects information of a service bearing path affected by the fault, and when the restoration path calculation module selects an available route according to the fault information, relevant routes of the service bearing path affected by the fault are eliminated.
When a fault occurs in a power grid link, a route related to the faulty link may be affected, and if the related route is added to a route for constructing a restoration path, service bearing and service data transmission of the restoration path may be affected.
Further, the specific process of the path analysis unit performing priority division on each restoration path to be selected according to the load data of each restoration path to be selected in the third step is as follows: the path analysis unit calls data stream bandwidth data and time delay data of all service bearing paths in the network load monitoring module, the path analysis module predicts the service bearing capacity and service transmission efficiency of each path to be recovered according to the called data stream bandwidth data and time delay data, the path analysis module sorts the paths to be recovered from high to low according to the service bearing capacity and the service transmission efficiency, the path analysis unit comprehensively scores according to the sorting sequence of the service bearing capacity and the sorting sequence of the service transmission efficiency, the higher the sorting sequence is, the higher the score is, and the highest priority is selected by the path analysis unit as the recovery path to be recovered.
By prioritizing the service carrying capacity of the restoration path to be selected, the selected restoration path can be ensured to carry service data, and meanwhile, the optimal transmission efficiency of the service data can be ensured.
Further, after the path analysis unit selects the restoration path to be selected with the highest priority as the restoration path for solving the fault in the third step, the restoration path transmission module transmits the restoration path information selected by the path analysis unit to the power communication network node uploading the fault information, and after the power communication network node uploading the fault information receives the restoration path information, the power communication network node establishes the restoration path to realize fault restoration.
The invention has the beneficial effects that:
the available path is found out through a genetic algorithm, path calculation can be carried out without a complete network topology structure, and path calculation failure caused by the fact that network topology information is not uniform when the network scale is large is prevented. And a plurality of available paths can be acquired through a genetic algorithm, and load data of each link is acquired through a network load monitoring module, so that the load condition of the calculated available paths is predicted, an optimal path is selected as a recovery path according to the prediction result, and the newly established recovery path can meet the service transmission requirement and ensure the transmission efficiency.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a PCE path computation element of the present invention;
FIG. 3 is a schematic flow diagram of the present invention;
FIG. 4 is a schematic diagram of one implementation of an embodiment of the present invention;
wherein: 1. a PCE path calculation unit, 11, a fault information receiving module, 12, a recovery path calculation module, 13, a network load monitoring module, 14, a network information storage module, 15, a recovery path transmission module, 2, a path analysis unit, 3, and a fault information acquisition unit.
Detailed Description
The invention is further described below with reference to the figures and examples.
Example (b):
a kind of electric wire netting trouble route based on PCE resumes the system, as shown in fig. 1, including PCE route calculation unit 1, route analysis unit 2 and trouble information acquisition unit 3, as shown in fig. 2, the said PCE route calculation unit 1 includes trouble information receiving module 11, resumes route calculation module 12, network load monitoring module 13, network information storage module 14 and resumes route transmission module 15, the said trouble information receiving module 11 is connected with route resuming calculation module, the said trouble information receiving module 11 is used for receiving the trouble information that the trouble node uploads, the said network load monitoring module 13 is connected with route analysis unit 2, the said network load monitoring module 13 is used for monitoring the load information of all business load-bearing routes in the electric power communication network, the said restoration route calculation module 12 is used for calculating and generating and waiting to select and resuming the route; the path analysis unit 2 is connected to the restoration path calculation module 12, and the path analysis unit 2 is configured to divide priorities of restoration paths to be selected and select a restoration path to be selected with the highest priority as a restoration path.
The network information storage module 14 is connected to the restoration path calculation module 12, and the network information storage module 14 is configured to store network topology information of the power communication network and information related to an established service bearer path in the power communication network.
The restoration path transmission module 15 is connected to the path analysis unit 2, and the restoration path transmission module 15 is configured to transmit the restoration path information selected by the path analysis unit 2 to the failed node.
The fault information acquisition unit 3 is arranged at a node of the power communication network, the fault information acquisition unit 3 is connected with the PCE path calculation unit 1, and the fault information acquisition unit 3 is used for acquiring fault information and transmitting the fault information to the PCE path calculation unit 1 through the node of the power communication network.
A PCE-based power grid fault path restoration method, as shown in fig. 3, includes the following steps:
after detecting that a power communication network has a fault, a power communication network node uploads fault information to a PCE path calculation unit 1;
step two, a fault information receiving module 11 in the PCE path computing unit 1 receives fault information, and a recovery path computing module 12 computes a plurality of recovery paths to be selected according to the received fault information;
and step three, the path analysis unit 2 acquires load information of each restoration path to be selected through the network load monitoring module 13, the path analysis unit 2 performs priority division on each restoration path to be selected according to load data of each restoration path to be selected, and the restoration path to be selected with the highest priority is selected as the restoration path for solving the fault.
The specific process of calculating the restoration path to be selected by the restoration path calculation module 12 according to the received fault information in the second step is as follows: the restoration path calculation module 12 extracts the routing information stored in the network information storage module 14, and then selects an available route according to the failure information, and the restoration path calculation module 12 selects the available route through a genetic algorithm to construct a restoration path to be selected.
When the restoration path calculation module 12 calculates the restoration path to be selected through the genetic algorithm, the restoration path calculation module 12 stops the calculation when the number of the restoration paths to be selected reaches the preset threshold. The preset threshold value is set to be 5, and the service recovery time is prevented from being too long due to too large calculation amount.
In the first step, after the power communication network node detects that the power communication network has a fault, the power communication network node collects network fault information through the fault information collection module, and meanwhile, the fault information collection module also collects information of a service bearing path affected by the fault, and when the restoration path calculation module 12 selects an available route according to the fault information, relevant routes of the service bearing path affected by the fault are eliminated.
In the third step, the specific process of the path analysis unit 2 performing priority division on each restoration path to be selected according to the load data of each restoration path to be selected is as follows: the path analysis unit 2 calls data stream bandwidth data and time delay data of all service bearing paths in the network load monitoring module 13, the path analysis module predicts the service bearing capacity and the service transmission efficiency of each path to be recovered to be selected according to the called data stream bandwidth data and the time delay data, the path analysis module sorts the paths to be recovered from high to low according to the service bearing capacity and the service transmission efficiency, the path analysis unit 2 comprehensively scores according to the sorting sequence of the service bearing capacity and the sorting sequence of the service transmission efficiency, the higher the sorting sequence, the higher the score of the path to be recovered is, and the path analysis unit 2 selects the highest priority of the path to be recovered as the highest priority.
After the path analysis unit 2 selects the restoration path to be selected with the highest priority as the restoration path for solving the fault, the restoration path transmission module 15 transmits the restoration path information selected by the path analysis unit 2 to the power communication network node that uploads the fault information, and after the power communication network node that uploads the fault information receives the restoration path information, the power communication network node establishes the restoration path to realize fault restoration.
As shown in fig. 4, a service bearer path L1(a-B-C-D) exists in the power communication network, a B-C segment fails at a certain time, after detecting a failure, the network node B collects failure information and transmits the failure information to the PCE path computation unit 1, the PCE path computation module computes and obtains a to-be-selected restoration path CL1(a-B-E-F-D) and a to-be-selected restoration path CL2(a-G-D), and the path analysis unit 2 prioritizes the to-be-selected restoration path CL1 and the to-be-selected restoration path CL2 according to load data.
If the priority of the restoration path to be selected CL1 is higher, the restoration path to be selected CL1 is used as the restoration path for solving the failure. The PCE path computation element 1 transmits the relevant information of the restoration path to be selected CL1 to the network node B, the network node B forwards the relevant information of the restoration path to be selected CL2 to the network node a, and the network node a constructs the restoration path according to the relevant information of the restoration path to be selected CL 1.
If the priority of the restoration path to be selected CL2 is higher, the restoration path to be selected CL2 is used as the restoration path for solving the failure. The PCE path computation element 1 transmits the relevant information of the restoration path to be selected CL2 to the network node B, the network node B forwards the relevant information of the restoration path to be selected CL2 to the network node a, and the network node a constructs the restoration path according to the relevant information of the restoration path to be selected CL 2.
The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the spirit of the invention as set forth in the claims.
Claims (10)
1. A power grid fault path recovery system based on a PCE (path computation element) is characterized by comprising a PCE path computation unit (1) and a path analysis unit (2), wherein the PCE path computation unit (1) comprises a fault information receiving module (11), a recovery path computation module (12) and a network load monitoring module (13), the fault information receiving module (11) is connected with the path recovery computation module, the fault information receiving module (11) is used for receiving fault information uploaded by a fault node, the network load monitoring module (13) is connected with the path analysis unit (2), the network load monitoring module (13) is used for monitoring load information of all service bearing paths in a power communication network, and the recovery path computation module (12) is used for computing and generating a recovery path to be selected; the path analysis unit (2) is connected with the restoration path calculation module (12), and the path analysis unit (2) is used for dividing the priority of the restoration path to be selected and selecting the restoration path to be selected with the highest priority as the restoration path.
2. A PCE-based grid fault path restoration system according to claim 1, wherein the PCE path computation unit (1) further comprises a network information storage module (14), the network information storage module (14) being configured to store network topology information of the electric power communication network and information about established traffic bearer paths in the electric power communication network.
3. The PCE-based power grid fault path restoration system according to claim 1, wherein the PCE path calculation unit (1) further comprises a restoration path transfer module (15), the restoration path transfer module (15) is connected to the path analysis unit (2), and the restoration path transfer module (15) is configured to transmit the restoration path information selected by the path analysis unit (2) to the fault node.
4. The PCE-based power grid fault path restoration system according to claim 1, further comprising a fault information collection unit (3), wherein the fault information collection unit (3) is arranged at a power communication network node, the fault information collection unit (3) is connected with the PCE path computation unit (1), and the fault information collection unit (3) is used for collecting fault information and transmitting the fault information to the PCE path computation unit (1) through the power communication network node.
5. A PCE-based power grid fault path recovery method is characterized by comprising the following steps:
step one, after a power communication network node detects that a power communication network has a fault, the power communication network node uploads fault information to a PCE path calculation unit (1);
step two, a fault information receiving module (11) in the PCE path computing unit (1) receives fault information, and a recovery path computing module (12) computes a plurality of recovery paths to be selected according to the received fault information;
and thirdly, the path analysis unit (2) acquires the load information of each restoration path to be selected through the network load monitoring module (13), the path analysis unit (2) performs priority division on each restoration path to be selected according to the load data of each restoration path to be selected, and the restoration path to be selected with the highest priority is selected as the restoration path for solving the fault.
6. The PCE-based power grid fault path restoration method according to claim 5, wherein the specific process of the restoration path calculation module (12) in step two calculating the restoration path to be selected according to the received fault information is as follows: the restoration path calculation module (12) extracts the routing information stored in the network information storage module (14), and then selects an available route according to the fault information, and the restoration path calculation module (12) selects the available route through a genetic algorithm to construct a restoration path to be selected.
7. The PCE-based power grid fault path restoration method according to claim 6, wherein when the restoration path calculation module (12) performs calculation of the restoration path to be selected through a genetic algorithm, the restoration path calculation module (12) stops the calculation when the number of the restoration paths to be selected reaches a preset threshold.
8. The PCE-based power grid fault path recovery method according to claim 6, wherein in the first step, after the power communication network node detects that the power communication network has a fault, the power communication network node collects network fault information through the fault information collection module, and meanwhile, the fault information collection module also collects information of the service carrying path affected by the fault, and when the recovery path calculation module (12) selects an available route according to the fault information, the relevant route of the service carrying path affected by the fault is removed.
9. The PCE-based power grid fault path restoration method according to claim 5, wherein in step three, the specific process of the path analysis unit (2) performing priority division on each restoration path to be selected according to the load data of each restoration path to be selected is as follows: the path analysis unit (2) calls data stream bandwidth data and time delay data of all service bearing paths in the network load monitoring module (13), the path analysis module predicts the service bearing capacity of each path to be selected and recovered according to the called data stream bandwidth data and the time delay data, the path analysis module sorts the paths to be selected and recovered from high to low according to the service bearing capacity, and the priority of the path to be selected and recovered with the highest service bearing capacity is the highest priority.
10. The PCE-based power grid fault path recovery method according to claim 5, wherein after the path analysis unit (2) in the third step selects a to-be-selected recovery path with the highest priority as a recovery path for solving the fault, the recovery path transmission module (15) transmits the recovery path information selected by the path analysis unit (2) to the power communication network node uploading the fault information, and after the power communication network node uploading the fault information receives the recovery path information, the power communication network node establishes the recovery path to realize fault recovery.
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