CN112804092A - Modeling and simulation method and system for OTN optical transmission network for power communication - Google Patents
Modeling and simulation method and system for OTN optical transmission network for power communication Download PDFInfo
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Abstract
According to the modeling and simulation method and system for the OTN optical transmission network, the device node object fault and the optical fiber object fault are set in the simulation model, so that the influence and risk of the fault on a real network are simulated, the accident handling capacity is improved, the effectiveness of an anti-accident plan is checked, and the safe, stable and reliable operation of the power communication network is guaranteed. The modeling method comprises the steps of obtaining current network data of the OTN optical transmission network of the power communication and creating a data table; extracting data in the data table, and constructing preset various model objects and OTN frame models; managing the wavelength and time slot resources of optical fibers in the OTN optical transmission network by utilizing the OTN frame model, and storing the OTN frame model as an attribute in an optical fiber object; generating a network topology according to various model objects; and configuring service information of the OTN optical transmission network in the optical fiber class object, configuring a protection strategy in a network topology, and completing construction of an OTN optical transmission network model.
Description
Technical Field
The invention relates to the technical field of power communication, in particular to a modeling and simulation method and system for an OTN optical transmission network for power communication.
Background
The power communication network is used as an important infrastructure of a power system, bears information of management, operation, control and the like of a power grid, and is a foundation for ensuring safe and stable operation of the power grid, automation of power grid dispatching and informatization of power grid management. The optical transmission network is used as a main component of the power backbone communication network, bears the functions of information exchange, tandem connection and transmission of the whole network, and provides a transmission channel for various services of the power grid. With the continuous development of intelligent power grids and power informatization, the scale of a power communication network is continuously enlarged, the types and the information quantity of services borne by an optical transmission network are rapidly increased, and the problems of complicated network structure, increased management difficulty and the like are caused.
Because the existing power communication network lacks a simulation platform and cannot carry out verification analysis in a production environment, operation and maintenance management is still carried out by depending on personal experience and theoretical analysis. With the proposal of an 'energy internet' strategy, the increasing complexity of a network structure causes the problems of reliability, survivability reduction, large influence area when a fault occurs and the like, and the traditional method for evaluating the operation and reliability of the power communication system by only depending on experience and theoretical analysis obviously cannot adapt to the development requirement. Therefore, it is necessary to verify and evaluate the power communication network by using a simulation method, improve the accident handling capability of operation and maintenance personnel by simulating the influence and risk of a fault on the real network, and check the effectiveness of an anti-accident plan.
The existing simulation software tool or method is mainly developed aiming at the simulation requirements of operators, and the specific requirements of electric networks such as the limitation of an optical cable network, the high reliability of electric power service, electric network management policies (such as three-double, heavy load of lines and the like) and the like are not considered, so that the requirements of safe, stable and reliable operation of an electric power communication network cannot be completely matched.
Disclosure of Invention
In order to solve the problems, the invention provides a modeling and simulation method and system for an OTN optical transmission network, which are used for power communication.
The invention provides a modeling method for an OTN optical transmission network for power communication, which comprises the following steps,
acquiring current network data of an OTN optical transmission network for power communication, and creating a data table;
extracting data in the data table, and constructing preset various model objects and OTN frame models;
managing the wavelength and time slot resources of optical fibers in the OTN optical transmission network by utilizing the OTN frame model, and storing the OTN frame model as an attribute in an optical fiber object;
generating a network topology according to various model objects;
and configuring service information of the OTN optical transmission network in the optical fiber class object, configuring a protection strategy in a network topology, and completing construction of an OTN optical transmission network model.
In the modeling method for the OTN optical transmission network for power communication, provided by the invention, the OTN frame type model is formed by setting the data table and various model objects and generating the network, so that the automatic management of wavelength and time slot resources is realized, a protection strategy is set for each service in the model, and the accident handling capacity of operation and maintenance personnel is improved.
Preferably, the data table includes a site table, an equipment node table, an equipment board card table, a port table, an optical fiber table, an optical cable table, a channel table, a service table, an OLP table, an OMSP table, an OMS-SPRing2 table, an OCh _ SPRing table, an ODUk _ SPRing2 table, and a power grid management policy constraint table.
In the embodiment, when the data table is established, the existing network data in the xlsx format is extracted from the database of the electric power communication OTN optical transmission network, and the data table is established according to the existing network data; the data extraction is convenient, the data is rich, and various data of the OTN optical transmission network can be covered.
Preferably, in any one of the foregoing embodiments, the preset various types of model objects include a site object, an equipment node object, an equipment board object, a port object, an optical fiber object, an optical cable object, a channel object, a service object, an OLP object, an OMSP object, an OMS-SPRing2 object, an OCh _ SPRing object, an ODUk _ SPRing2 object, and a power grid management policy constraint object.
Preferably in any of the above embodiments, the OTN frame class model includes an OTN frame class and an OTN multiplexing container class;
the OTN frame class comprises a class attribute and a class method; the class attribute of the OTN frame class comprises a frame type attribute and a frame working state attribute; the OTN frame class method comprises a method for checking whether the OTM-n.m frame and the OTUk frame are in an idle state or not and a method for setting the OTM-n.m frame and the OTUk frame as a half-frame working mode;
the OTN multiplexing container class comprises class attributes and class methods; the class attribute of the OTN multiplexing container class comprises an OTN frame rate grade attribute and a maximum remaining OPU0/1/2/3/4 granularity service signal number attribute which can be accommodated in the OTN frame;
the OTN multiplexing container class method comprises the methods of allocation, release, update and check of wavelength and time slot resources.
Preferably, in any of the above embodiments, managing the OTN frame-like wavelength and timeslot resources includes;
checking whether wavelength resources and idle time slot resources with corresponding granularity exist in the current OTN frame object;
judging whether the maximum remaining allowable OPU0/1/2/3/4 granularity service signal quantity is zero or not according to the service signal granularity; if not, setting the corresponding time slot resource in the wavelength to be in an occupied state, storing corresponding service information, and updating the number of the remaining service signals capable of accommodating OPU0/1/2/3/4 granularity.
In this embodiment, an OTN frame class model is formed to implement automatic management of wavelength and timeslot resources, and an OTN frame and an OTN multiplexing container are used as base points and are set as object-oriented class structures, that is, an OTN frame class and an OTN multiplexing container class, so as to implement management operations on the wavelength and timeslot resources of the OTN frame class; the accident handling capacity of operation and maintenance personnel is improved.
The invention also provides a modeling system for the OTN optical transmission network, which comprises:
the data acquisition module is used for acquiring the current network data of the OTN optical transmission network and creating a data table;
the building module is used for extracting data in the data table and building preset various model objects and OTN frame models;
the optical fiber class object updating module is used for managing the wavelength and time slot resources of optical fibers in the OTN optical transmission network by utilizing the OTN frame class model and storing the OTN frame class model as an attribute in the optical fiber class object;
the network topology generating module is used for generating network topology according to various model objects;
and the configuration module is used for configuring service information of the OTN optical transmission network in the optical fiber type object, configuring a protection strategy in a network topology and completing construction of an OTN optical transmission network model.
The invention also provides a simulation method for the OTN optical transmission network, which comprises the following steps,
acquiring a fault equipment node list and a fault optical fiber list, and setting the state attributes of corresponding equipment node objects and optical fiber objects in the OTN optical transmission network model as faults;
checking whether the optical fiber affected by the fault is configured with protection or not in sequence, and extracting affected services in the network topology in the OTN optical transmission network model;
according to the service grade from top to bottom, executing protection switching according to a protection strategy configured in a network topology in the OTN optical transmission network model;
if the protection switching is successfully executed, updating the associated service channel path, otherwise reporting the service transmission interruption, and returning a fault analysis result to finish the simulation;
the OTN optical transmission network model is constructed by any one of the modeling methods.
According to the simulation method for the OTN optical transmission network, provided by the invention, switching protection is carried out according to a preset protection strategy during simulation, once the network fails, the fault position and the fault type can be automatically judged, and the switching protection strategy is timely executed, so that the smoothness of a communication link is ensured, the reliability of the OTN optical transmission network is greatly improved, the intelligent operation and maintenance of the OTN transmission system of the backbone power communication is realized, and the safe, stable and reliable operation of the OTN is ensured.
Preferably, the protection policy includes: when protection switching is executed, firstly OLP1+1 protection is considered, then OMSP1+1 protection, secondly OMS-SPRing2 protection, secondly OCh-SPRing2 protection and finally ODUk-SPRing2 protection are considered;
when an optical fiber fails, sequentially trying to execute OLP1+1 protection switching, OMSP1+1 protection switching, OMS-SPRing2 protection switching, OCh-SPRing2 protection switching and ODUk-SPRing2 protection switching, if any one of the protection switching is successfully executed, updating a related service channel path, otherwise reporting the service transmission interruption;
when the equipment node fails, only OMS-SPRing2 protection switching, OCh-SPRing2 protection switching and ODUk-SPRing2 protection switching are tried to be executed, if any one of the protection switching is successfully executed, the associated service channel path is updated, and otherwise, the service transmission interruption is reported.
The invention also provides a simulation system for the OTN optical transmission network, which comprises:
the fault presetting module is used for acquiring a fault equipment node list and a fault optical fiber list and setting the state attributes of corresponding equipment node objects and optical fiber objects in the OTN optical transmission network model as faults;
the inspection module is used for sequentially inspecting whether the optical fibers affected by the fault are configured with protection or not and extracting affected services in the network topology in the OTN optical transmission network model;
the protection switching module executes protection switching according to a protection strategy configured in a network topology in the OTN optical transmission network model from top to bottom according to the service grade; if the protection switching is successfully executed, updating the associated service channel path, otherwise reporting the service transmission interruption, and returning a fault analysis result;
the OTN optical transmission network model is constructed by any one of the modeling methods.
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The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a UML diagram of a resource management model in a modeling method for an OTN optical transmission network for power communications according to the present invention;
fig. 2 is a flowchart of a simulation method for an OTN optical transmission network for power communications according to the present invention;
fig. 3 is a schematic diagram of a fault analysis process of the OTN optical transmission network for power communication according to the present invention.
Detailed Description
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The following detailed description is exemplary in nature and is intended to provide further details of the invention. Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention.
As shown in fig. 1, the present invention provides a modeling method for an optical transmission network of an optical transport network of an optical power communication, which includes step 1, obtaining present network data of the optical transmission network of the optical power communication, and creating a data table;
when the data table is established, the data table comprises but is not limited to a data table form, for example, existing network data in an xlsx format is extracted from a database of the power communication OTN optical transmission network, and the data table is created according to the existing network data; the method is convenient for data extraction, has rich data, and can cover all types of node data of the OTN optical transmission network. The data table comprises a site table, an equipment node table, an equipment board card table, a port table, an optical fiber table, an optical cable table, a channel table, a service table, an OLP table, an OMSP table, an OMS-SPRing2 table, an OCh _ SPRing table, an ODUk _ SPRing2 table and a power grid management policy constraint table.
the various model objects comprise a site object, an equipment node object, an equipment board object, a port object, an optical fiber object, an optical cable object, a channel object, a service object, an OLP object, an OMSP object, an OMS-SPRing2 object, an OCh _ SPRing object, an ODUk _ SPRing2 object and a power grid management policy constraint object.
Step 3, managing the wavelength and time slot resources of the optical fiber in the OTN optical transmission network by using the OTN frame model, and storing the OTN frame model as an attribute in an optical fiber object;
and 5, configuring service information of the OTN optical transmission network in the optical fiber type object, configuring a protection strategy in a network topology, and completing construction of a model of the OTN optical transmission network.
The OTN frame class comprises class attributes and class methods;
the class attribute comprises a frame type attribute and a frame working state attribute;
the method comprises a method for checking whether the OTM-n.m frame and the OTUk frame are in an idle state or not and a method for setting the OTM-n.m frame and the OTUk frame to be in a half-frame working mode.
The class attributes contained in the OTN multiplexing container class comprise an OTN frame rate grade attribute and a maximum remaining OPU0/1/2/3/4 granularity service signal number attribute which can be accommodated in the OTN frame;
the method comprises the steps of allocating, releasing, updating and checking wavelength and time slot resources, and specifically comprises the steps of managing the wavelength and time slot resources of the OTN frame;
when resources are distributed for service signals in the optical fiber, whether wavelength resources and idle time slot resources with corresponding granularity exist in the current OTN frame object is checked;
judging whether the maximum remaining allowable OPU0/1/2/3/4 granularity service signal quantity is zero or not according to the service signal granularity; if not, setting the corresponding time slot resource in the wavelength to be in an occupied state, storing corresponding service information, and updating the number of the remaining service signals capable of accommodating OPU0/1/2/3/4 granularity.
In this embodiment, an OTN frame class model is formed to implement automatic management of wavelength and timeslot resources, and an OTN frame and an OTN multiplexing container are used as base points and are set as object-oriented class structures, that is, an OTN frame class and an OTN multiplexing container class, so as to implement management operations on the wavelength and timeslot resources of the OTN frame class; the accident handling capacity of operation and maintenance personnel is improved.
In the OTN optical transmission network model for the electric power communication OTN optical transmission network, the OTN frame type model is formed by setting the data table, various model objects and generating the network, so that the automatic management of wavelength and time slot resources is realized, a protection strategy is set for each service in the model, and the accident handling capacity of operation and maintenance personnel is improved.
As shown in fig. 2, the present invention further provides a simulation method for an OTN optical transmission network for power communication, which simulates a fault through a resource management model, including
S1, manually or automatically configuring the equipment node object and the optical fiber object to have faults;
s2, obtaining a fault equipment node list and a fault optical fiber list, setting the state attributes of corresponding equipment node objects and optical fiber objects in the OTN optical transmission network model as faults, and converting the state attributes into the state attributes of all optical fiber objects connected with the equipment nodes as faults;
s3, checking whether the optical fiber affected by the fault is configured with protection in sequence, and extracting the affected service in the network topology in the OTN optical transmission network model;
s4, according to the service grade from top to bottom, executing protection switching according to the protection strategy configured in the network topology in the OTN optical transmission network model;
s5, if the protection switching is successfully executed, updating the associated service channel path, otherwise, reporting the service transmission interruption, and returning the fault analysis result to complete the simulation;
the OTN optical transmission network model is constructed by the modeling method.
According to the simulation method for the OTN optical transmission network, provided by the invention, switching protection is carried out according to a preset protection strategy during simulation, once the transmission system fails, the failure position and the failure type can be automatically judged, and the switching protection strategy is timely executed, so that the smoothness of a communication link is ensured, the transmission performance of the OTN with reliability of the OTN is greatly improved, the controllability of the OTN with power backbone is enhanced, the intelligent operation and maintenance of the OTN with power backbone is realized, and the safe, stable and reliable operation of the OTN with power backbone is ensured.
As shown in fig. 3, when performing protection switching, firstly considering OLP1+1 protection, then OMSP1+1 protection, then OMS-SPRing2 protection, then OCh-SPRing2 protection, and finally considering ODUk-SPRing2 protection;
when an optical fiber fails, sequentially trying to execute OLP1+1 protection switching, OMSP1+1 protection switching, OMS-SPRing2 protection switching, OCh-SPRing2 protection switching and ODUk-SPRing2 protection switching, if any one of the protection switching is successfully executed, updating a related service channel path, otherwise reporting the service transmission interruption;
when the equipment node fails, only OMS-SPRing2 protection switching, OCh-SPRing2 protection switching and ODUk-SPRing2 protection switching are tried to be executed, if any one of the protection switching is successfully executed, the associated service channel path is updated, and otherwise, the service transmission interruption is reported.
The OLP1+1 protection and the OMSP1+1 protection both use one optical path to protect another optical path, and the protection switching is divided into unidirectional switching and bidirectional switching.
For unidirectional switching, when the working optical fiber fails, only the service in the failed optical fiber is switched to the protection optical fiber in the same direction for transmission;
for bidirectional switching, when the working optical fiber fails, the services in the bidirectional optical fiber need to be switched to the protection optical path for transmission.
The invention also provides a modeling system for the OTN optical transmission network, which is used for implementing the modeling method and comprises the following steps:
the data acquisition module is used for acquiring the current network data of the OTN optical transmission network and creating a data table;
the building module is used for extracting data in the data table and building preset various model objects and OTN frame models;
the optical fiber class object updating module is used for managing the wavelength and time slot resources of optical fibers in the OTN optical transmission network by utilizing the OTN frame class model and storing the OTN frame class model as an attribute in the optical fiber class object;
the network topology generating module is used for generating network topology according to various model objects;
and the configuration module is used for configuring service information of the OTN optical transmission network in the optical fiber type object, configuring a protection strategy in a network topology and completing construction of an OTN optical transmission network model.
The invention also provides a simulation system for the OTN optical transmission network, which is used for implementing the simulation method and comprises the following steps:
the fault presetting module is used for acquiring a fault equipment node list and a fault optical fiber list and setting the state attributes of corresponding equipment node objects and optical fiber objects in the OTN optical transmission network model as faults;
the inspection module is used for sequentially inspecting whether the optical fibers affected by the fault are configured with protection or not and extracting affected services in the network topology in the OTN optical transmission network model;
the protection switching module executes protection switching according to a protection strategy configured in a network topology in the OTN optical transmission network model from top to bottom according to the service grade; if the protection switching is successfully executed, updating the associated service channel path, otherwise reporting the service transmission interruption, and returning a fault analysis result;
the OTN optical transmission network model is constructed by the modeling method.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.
Claims (10)
1. A modeling method for an OTN optical transmission network for power communication is characterized by comprising
Acquiring current network data of an OTN optical transmission network for power communication, and creating a data table;
extracting data in the data table, and constructing preset various model objects and OTN frame models;
managing the wavelength and time slot resources of optical fibers in the OTN optical transmission network by utilizing the OTN frame model, and storing the OTN frame model as an attribute in an optical fiber object;
generating a network topology according to various model objects;
and configuring service information of the OTN optical transmission network in the optical fiber class object, configuring a protection strategy in a network topology, and completing construction of an OTN optical transmission network model.
2. The modeling method for the power communication OTN optical transmission network according to claim 1, wherein the data tables include a site table, an equipment node table, an equipment board card table, a port table, an optical fiber table, an optical cable table, a channel table, a service table, an OLP table, an OMSP table, an OMS-SPRing2 table, an OCh _ SPRing table, an ODUk _ SPRing2 table, and a grid management policy constraint table.
3. The modeling method for an OTN optical transport network for power communication according to claim 1,
the preset various model objects comprise a site object, an equipment node object, an equipment board object, a port object, an optical fiber object, an optical cable object, a channel object, a service object, an OLP object, an OMSP object, an OMS-SPRing2 object, an OCh _ SPRing object, an ODUk _ SPRing2 object and a power grid management policy constraint object.
4. The modeling method for the OTN optical transport network for power communication according to claim 1, wherein the OTN frame class model comprises an OTN frame class and an OTN multiplexing container class.
5. The modeling method for an OTN optical transport network for power communication according to claim 4,
the OTN frame class comprises a class attribute and a class method; the class attribute of the OTN frame class comprises a frame type attribute and a frame working state attribute; the OTN frame class method comprises a method for checking whether the OTM-n.m frame and the OTUk frame are in an idle state or not and a method for setting the OTM-n.m frame and the OTUk frame as a half-frame working mode;
the OTN multiplexing container class comprises class attributes and class methods; the class attribute of the OTN multiplexing container class comprises an OTN frame rate grade attribute and a maximum remaining OPU0/1/2/3/4 granularity service signal number attribute which can be accommodated in the OTN frame;
the OTN multiplexing container class method comprises the methods of allocation, release, update and check of wavelength and time slot resources.
6. The modeling method for the OTN optical transmission network for power communication according to claim 1, wherein the following method is adopted when managing the wavelength and time slot resources:
checking whether wavelength resources and idle time slot resources with corresponding granularity exist in the current OTN frame object;
judging whether the maximum remaining allowable OPU0/1/2/3/4 granularity service signal quantity is zero or not according to the service signal granularity; if not, setting the corresponding time slot resource in the wavelength to be in an occupied state, storing corresponding service information, and updating the number of the remaining service signals capable of accommodating OPU0/1/2/3/4 granularity.
7. A modeling system for an OTN optical transmission network for power communication is characterized by comprising:
the data acquisition module is used for acquiring the current network data of the OTN optical transmission network and creating a data table;
the building module is used for extracting data in the data table and building preset various model objects and OTN frame models;
the optical fiber class object updating module is used for managing the wavelength and time slot resources of optical fibers in the OTN optical transmission network by utilizing the OTN frame class model and storing the OTN frame class model as an attribute in the optical fiber class object;
the network topology generating module is used for generating network topology according to various model objects;
and the configuration module is used for configuring service information of the OTN optical transmission network in the optical fiber type object, configuring a protection strategy in a network topology and completing construction of an OTN optical transmission network model.
8. A simulation method for an OTN optical transmission network for power communication is characterized by comprising the following steps:
acquiring a fault equipment node list and a fault optical fiber list, and setting the state attributes of corresponding equipment node objects and optical fiber objects in the OTN optical transmission network model as faults;
checking whether the optical fiber affected by the fault is configured with protection or not in sequence, and extracting affected services in the network topology in the OTN optical transmission network model;
according to the service grade from top to bottom, executing protection switching according to a protection strategy configured in a network topology in the OTN optical transmission network model;
if the protection switching is successfully executed, updating the associated service channel path, otherwise reporting the service transmission interruption, and returning a fault analysis result to finish the simulation;
the OTN optical transmission network model is constructed by the modeling method of any one of claims 1 to 6.
9. The power communication OTN optical transport network oriented simulation method of claim 8,
the protection strategy comprises the following steps:
when protection switching is executed, firstly OLP1+1 protection is considered, then OMSP1+1 protection, secondly OMS-SPRing2 protection, secondly OCh-SPRing2 protection and finally ODUk-SPRing2 protection are considered;
when an optical fiber fails, sequentially executing OLP1+1 protection switching, OMSP1+1 protection switching, OMS-SPRing2 protection switching, OCh-SPRing2 protection switching and ODUk-SPRing2 protection switching, if any one of the protection switching is successfully executed, updating a related service channel path, otherwise, reporting the service transmission interruption;
when the equipment node fails, OMS-SPRing2 protection switching, OCh-SPRing2 protection switching and ODUk-SPRing2 protection switching are sequentially executed, if any one of the protection switching is successfully executed, the associated service channel path is updated, otherwise, the service transmission interruption is reported.
10. A simulation system for an OTN optical transmission network, which is characterized by comprising:
the fault presetting module is used for acquiring a fault equipment node list and a fault optical fiber list and setting the state attributes of corresponding equipment node objects and optical fiber objects in the OTN optical transmission network model as faults;
the inspection module is used for sequentially inspecting whether the optical fibers affected by the fault are configured with protection or not and extracting affected services in the network topology in the OTN optical transmission network model;
the protection switching module executes protection switching according to a protection strategy configured in a network topology in the OTN optical transmission network model from top to bottom according to the service grade; if the protection switching is successfully executed, updating the associated service channel path, otherwise reporting the service transmission interruption, and returning a fault analysis result;
the OTN optical transmission network model is constructed by the modeling method of any one of claims 1 to 6.
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| CN113392502A (en) * | 2021-05-13 | 2021-09-14 | 国网河北省电力有限公司培训中心 | Simulation system and method for optical transport network circuit board training |
| CN113553694A (en) * | 2021-06-17 | 2021-10-26 | 中国电力科学研究院有限公司 | Simulation method and system for POTN optical transmission network of power communication |
| CN114301793A (en) * | 2021-12-30 | 2022-04-08 | 中国电信股份有限公司 | Path generation method and device in optical transmission network |
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