CN114240083A - Range-based electric power communication overhaul risk analysis method - Google Patents

Abstract

The invention discloses a range-based electric power communication overhaul risk analysis method, which comprises the steps of firstly adopting a communication network service N-X analysis model, taking an optical cable fiber core and a port as minimum units, and obtaining services borne on the fiber core or the port through traversal analysis of the fiber core in the optical cable and the port in equipment; meanwhile, by combining multiple protection mechanisms such as optical cut protection, MSP protection, SNCP protection and 2M1+1 protection, the degree of influence of overhaul on the bearing service is judged through analyzing the service protection modes; and then, on the basis, risk prevention early warning of equipment and links is given aiming at all service routes of the power communication network in the N-X overhaul mode. The invention accurately identifies the possible risks and gives early warning, thereby effectively reducing the risks of the maintenance operation on the power communication network.

Description

Range-based electric power communication overhaul risk analysis method

Technical Field

The invention relates to a scoped electric power communication overhaul risk analysis method, and belongs to the technical field of electric power communication.

Background

At present, an electric power communication network is an important supporting facility for supporting safe and stable operation of a power grid, extremely high requirements are placed on the aspects of stability, reliability and the like of communication, and as a core business scene, a communication operation guarantee is an important link of electric power communication network management.

The method has the advantages that the possible risks of the simultaneous overhaul are efficiently and accurately analyzed, the key of communication operation guarantee business is realized, and the basis for guaranteeing the reliable and efficient operation of the power grid is also realized. At present, electric power communication network risk research is mostly applied to risk analysis and calculation under static and normal operation modes of an electric power communication network, and technologies such as self-healing ring protection and independent double-channel protection are mainly adopted to realize risk analysis control. However, these risk analysis control techniques are oriented to network-level optimization after a fault occurs, and the risk analysis is not performed on a communication network in a dynamic and maintenance-based mode.

Disclosure of Invention

The purpose is as follows: in order to overcome the defects in the prior art, the invention provides a scoped electric power communication maintenance risk analysis method, which realizes maintenance risk discovery and early warning for simultaneous development, makes up for the risk research blank of an electric power communication network under a dynamic and maintenance mode, helps operation and maintenance personnel avoid the risk generated by N-X, and safely and efficiently arranges a maintenance plan.

The technical scheme is as follows: in order to solve the technical problems, the technical scheme adopted by the invention is as follows:

a scoped electric power communication overhaul risk analysis method comprises the following steps:

step 1: all optical path information associated with the device/cable is queried.

Step 2: and traversing all the optical paths.

And step 3: and inquiring the light path in sequence, performing N-X analysis and judging the state of the light path.

And 4, step 4: judging whether the optical path is configured with optical cut protection, and entering step 5 if the optical cut protection is configured; and if the optical path is not provided with the optical switch protection, performing protection judgment on the MSP multiplexing section, and entering the step 6.

And 5: and (4) judging whether the optical cable section of the other route is in the selected optical cable section set, if not, the optical path is not interrupted, the channel is normal, the service is normal, the protection type is recorded as 'optical cut protection', and the step 7 is entered. And if the MSP multiplex section is in the set, carrying out MSP multiplex section protection judgment and entering the step 6.

Step 6: if the MSP protection is configured, judging whether the light path of the MSP protection is in the interrupted light path set, if so, interrupting the light path, adding the interrupted light path into the interrupted light path set, if not, the light path is not interrupted, the channel is normal, the service is normal, and recording that the unprotected type is 'MSP protection'.

And 7: and (4) judging whether the light paths are traversed completely, and if not, entering the step 3. If the traversal is completed, inquiring all channels borne by the interrupted light path, and entering step 8;

and 8: the channels are traversed in order.

And step 9: judging whether the channel has SNCP protection, if so, traversing the main and standby routes of the channel, comparing the main and standby routes with the interrupted light path set, if not, the channel is not interrupted, switching the channel, the service carried by the channel is normal, recording the protection type as SNCP protection, and entering step 12. Otherwise, if there is an intersection, the channel is interrupted and step 10 is performed.

Step 10: and inquiring the service carried by the interrupt channel.

Step 11: judging whether the service has 2M1+1 protection, if so, inquiring whether the protection channel is in a channel set carried by an interrupted light path, if so, judging whether the protection channel has SNCP protection, if so, traversing main and standby routes of the channel, comparing the main and standby routes with the interrupted light path set, if the main and standby routes and the interrupted light path do not intersect, the channel is not interrupted, the service carried by the channel is normal, recording that the protection type is 'SNCP protection', otherwise, the channel is interrupted and the service is interrupted if the intersection exists; if the protection channel is not in the channel set carried by the interrupted optical path, the service is affected, and the record protection type is "2M 1+1 protection configured".

Step 12: and judging whether the channel traversal is completed or not, if not, entering the step 8, and if so, ending the process.

Preferably, the method further comprises the following steps: and when the service route is the 0 standby route, directly providing a standby route service list and a corresponding main route, and if a user puts forward a maintenance requirement, prompting service interruption.

Preferably, the method further comprises the following steps: and when the service route is the n +1 coincident route, giving a n +1 coincident route service list and a coincident part, and if a user puts forward a maintenance requirement of the coincident part, prompting service interruption.

As a preferred scheme, the 0 backup route is a main route in which the service only has one service currently carrying the operating service, and no backup route exists, and once the main route is overhauled at a certain place, the service is necessarily interrupted.

As a preferred scheme, the n +1 overlapped route is a service that has a main route and a plurality of standby routes, but the main route and all the standby routes pass through the same equipment or the same link, and if the overlapped part is overhauled, the service is necessarily interrupted.

Preferably, the method for performing "N-X analysis" to determine the state of the optical path includes the following steps:

step 1.1: starting single-point analysis on the first resource, completing the N-1 analysis of the current communication network service, and obtaining the conclusion whether the light path is influenced and the influence degree;

step 1.2: on the basis of the N-1 analysis result, marking the resources influenced by the single point in the communication network, setting the resources to be in an unavailable state, and providing a data basis for N-2 analysis;

step 1.3: taking the network and resource state marked by the N-1 analysis as the basis, taking out the next resource for N-2 analysis, wherein the process is as described in the step 1.1-the step 1.2;

step 1.4: and on the basis of the mark states accumulated for the previous time in sequence until the Xth resource is analyzed, obtaining an N-X light path analysis conclusion and outputting a report.

As a preferred scheme, the light path analysis conclusion is that the light path is not influenced and is interrupted.

Has the advantages that: the invention provides a scoped electric power communication overhaul risk analysis method, which is used for discovering and analyzing overhaul risks developed at the same time, provides an overhaul risk early warning algorithm, integrates the design idea of communication network service 'N-X analysis' and various protection mechanism technologies such as light cut protection, MSP protection, SNCP protection, 2M1+1 protection and the like, accurately identifies possible risks, gives early warning and effectively reduces the risks generated by overhaul operation on an electric power communication network.

Drawings

FIG. 1 is a flow chart of a method of scoped power communication troubleshooting risk analysis;

FIG. 2 is a communication network service "N-X analysis" design model.

Detailed Description

The present invention will be further described with reference to the following examples.

A method for analyzing electric power communication overhaul risk in a range mode includes the steps that firstly, a communication network service N-X analysis model is adopted, a fiber core and a port of an optical cable are used as minimum units, and service borne on the fiber core or the port is obtained through traversal analysis of the fiber core in the optical cable and the port in equipment; meanwhile, by combining multiple protection mechanisms such as optical cut protection, MSP protection, SNCP protection and 2M1+1 protection, the degree of influence of overhaul on the bearing service is judged through analyzing the service protection modes; and then, on the basis, risk prevention early warning of equipment and links is given aiming at all service routes of the power communication network in the N-X overhaul mode.

Communication network service based 'N-X analysis' model design

The traditional maintenance impact service analysis is based on the principle of communication service 'N-1', but the N-1 analysis is a single-point analysis of service impact, namely, the affected service is analyzed when a single transmission device or optical cable is maintained. In actual work, the overhaul developed at the same time section can be a plurality of transmission devices or optical cables, so the method for analyzing the stability of the communication network is expanded based on the N-1 analysis principle, and an N-X analysis model of the communication network service is adopted.

The communication network service 'N-X analysis' model is that all the resources are removed, then the circuit is connected in series, the result after the series connection is finished is compared with the previous result, the starting port and the stopping port still exist, the light path is not influenced, if only one end port or the starting port and the stopping port do not exist, the light path is interrupted, and the specific analysis steps are as follows:

(1) starting single-point analysis on the first resource, completing the N-1 analysis of the current communication network service, and obtaining the conclusion of whether the influence is generated or not and the influence degree;

(2) on the basis of the N-1 analysis result, marking the resources influenced by the single point in the communication network, setting the resources to be in an unavailable state, and providing a data basis for N-2 analysis;

(3) taking the network and resource state marked by the N-1 analysis as the basis, taking out the next resource for N-2 analysis, wherein the processes are as described in (1) to (2);

(4) and on the basis of the mark states accumulated for the previous time in sequence until the Xth resource is analyzed, obtaining an N-X analysis conclusion and outputting a report.

Criterion for determining the state of the channel (for the case of one optical path):

the optical path is not interrupted, the routing is normal, and the channel is not influenced.

Optical path interruption, route interruption (overhaul), optical switch/MSP/SNCP protection and channel instantaneous interruption (switch).

Optical path interruption, route interruption (overhaul), no optical cut/MSP/SNCP protection, channel interruption.

Communication transmission protection mode

The service state is normal, influenced and interrupted, the channel state is judged firstly when the service state is analyzed, and then the service state is judged according to the channel state and whether channel protection exists. The invention combines a multi-protection mechanism to realize high-efficiency automatic judgment of the affected service and the service causing interruption. At present, the communication transmission protection modes mainly include optical switch protection, Multiplex Section Protection (MSP), 2M1+1 protection, subnet connection protection (SNCP) and the like.

The channel state is not influenced, is interrupted instantly and is interrupted. The service state is normal, influenced and interrupted. When analyzing the service state, the channel state is judged first, and then the service state is judged according to the channel state and whether channel protection exists. There are several cases for judging service state according to channel state

1) The channel is not affected, and the service is not affected.

2) The channel is broken instantaneously, and the service is influenced.

3) Channel interruption, channel protection, channel normality protection and service influence.

4) Channel interruption, channel protection, protection channel interruption and service interruption.

5) Channel interruption, no channel protection and service interruption.

Light cutting protection: the optical path automatic switching protection technology is developed based on an optical switch technology, a fault is timely found by monitoring the change of transmission optical power in an optical cable in real time, a working optical path can be quickly and automatically switched to a standby route when a serious fault occurs, and communication is recovered within a very short time.

Multiplex Section Protection (MSP): the principle of Multiplex Section Protection (MSP) is to organize a plurality of optical interfaces on the same communication device to form a protection group, and to protect the ports from each other. The two-fiber bidirectional multiplexing section protection ring, the four-fiber bidirectional multiplexing section protection ring and the linear multiplexing section protection ring are widely applied to an electric power system.

2M1+1 protection: namely, the two-fiber one (two) -way channel protection ring (2M (1+ 1)) technology is two rings consisting of two optical fibers, wherein the primary ring transmits primary services and the backup ring transmits protection services. The principle of channel protection ring is that the channel is selected and received concurrently, the originating branch circuit board sends the service to two rings concurrently, the receiving end selects to receive a path of service with better quality to realize protection switching, and the receiving end branch circuit board selects to receive the service in the main ring direction by default.

Subnet connection protection (SNCP): the subnet connection protection is the extension of channel protection, and the '1 + 1' protection mode follows the principle of 'double sending at the sending end and selective receiving at the receiving end', and any network topology structure can be used, even if the network structure is complex, as long as a protection service path with different routes can be found out in the network, the path service can be used for carrying out '1 + 1' protection on the service of a working path.

3. Risk early warning in N-X overhaul mode

On the basis of the N-X analysis and multi-protection mechanism of the electric power communication service, node equipment and links which cannot be overhauled any more are obtained through calculation by the risk early warning method under the overhaul mode, and if a user puts forward an overhaul requirement on the risk node equipment or the links, service interruption early warning is prompted. Under the guidance of risk early warning, a maintainer takes precautionary measures in advance, avoids risks, arranges the maintenance sequence of equipment or a link, and effectively reduces the risks generated by maintenance operation on the power communication network.

For maintenance risk prevention and early warning developed at the same time, two types of risky service routes need to be processed:

(1) and 0, standby route, the service only has one main route which is carrying the operation service, and no standby route exists, and once the main route is overhauled at a certain position, the service is necessarily interrupted.

(2) N +1 overlapped route, the service has a main route and a plurality of standby routes, but the main route and all standby routes pass through the same equipment or the same link, and if the overlapped part is overhauled, the service is necessarily interrupted.

For the first kind of situation, directly providing a standby route service list and a corresponding main route, and prompting service interruption if a user puts forward a maintenance requirement; and (3) giving an n +1 coincidence routing service list and a coincidence part aiming at the second type of situation, and prompting service interruption if a user puts forward a coincidence part maintenance requirement. The risk early warning method provided by the invention can help operation and maintenance personnel avoid maintenance risks, and safely, efficiently and orderly arrange a maintenance plan.

Referring to fig. 1, fig. 1 is a flow chart of implementing the present invention, including the following steps:

1) selecting equipment/optical cable sections, and carrying out influence service analysis on the equipment/optical cable sections;

2) firstly, inquiring all optical path information related to equipment/optical cables;

3) traversing all the light paths;

4) querying the light paths in sequence;

5) judging whether the light path is configured with light cut protection, and if the light cut protection is configured, step 6; if the light path is not configured with the optical switch protection, the protection judgment of the MSP multiplexing section is carried out, and step 7;

6) and (4) judging whether the optical cable section of the other route is in the selected optical cable section set, if not, the optical path is not interrupted, the channel is normal, the service is normal, and the protection type is recorded as 'optical cut protection', and step 8. If the MSP multiplex section is in the set, MSP multiplex section protection judgment is carried out, and step 7;

7) if MSP protection is configured, judging whether an optical path protected by the MSP is in an interrupted optical path set, if so, interrupting the optical path, adding the interrupted optical path into the interrupted optical path set, if not, not interrupting the optical path, ensuring a normal channel and a normal service, and recording that the unprotected type is 'MSP protection';

8) and (4) judging whether the light paths are traversed completely, and if not, entering the step 4. If the traversal is completed, inquiring all channels borne by the interrupted light path, and entering step 9;

9) traversing channels in order

10) Judging whether the channel has SNCP protection, if so, traversing the main and standby routes of the channel, comparing the main and standby routes with the interrupted light path set, if not, the channel is not interrupted, switching the channel, the service carried by the channel is normal, recording the protection type as SNCP protection, and entering step 13. Otherwise, if there is an intersection, the channel is interrupted and step 11 is performed.

11) Inquiring about the service carried by the interrupt channel

12) Judging whether the service has 2M1+1 protection, if so, inquiring whether the protection channel is in a channel set carried by an interrupted light path, if so, judging whether the protection channel has SNCP protection, if so, traversing main and standby routes of the channel, comparing the main and standby routes with the interrupted light path set, if the main and standby routes and the interrupted light path do not have intersection, the channel is not interrupted, the service carried by the channel is normal, recording that the protection type is 'SNCP protection', otherwise, the channel is interrupted and the service is interrupted if the intersection exists; if the protection channel is not in the channel set carried by the interrupted optical path, the service is affected, and the record protection type is "2M 1+1 protection configured".

13) And judging whether the channel traversal is completed or not, if not, entering the step 9, and if so, ending the process.

By applying the method and the device, the possible risks in the simultaneous maintenance can be efficiently and accurately analyzed, and the method and the device are the key for guaranteeing the communication operation and the operation reliability and the efficiency of the power grid.

The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.

Claims (7)

1. A scoped electric power communication overhaul risk analysis method is characterized by comprising the following steps: the method comprises the following steps:

step 1: inquiring all optical path information related to the equipment/optical cable;

step 2: traversing all the light paths;

and step 3: inquiring the light path in sequence, performing N-X analysis, and judging the state of the light path;

and 4, step 4: judging whether the optical path is configured with optical cut protection, and entering step 5 if the optical cut protection is configured; if the light path is not configured with the optical switch protection, the protection judgment of the MSP multiplexing section is carried out, and the step 6 is entered;

and 5: judging whether the optical cable section of the other route is in the selected optical cable section set, if not, the optical path is not interrupted, the channel is normal, the service is normal, and the protection type is recorded as 'optical cut protection', entering step 7; if the MSP multiplex section is in the set, carrying out protection judgment on the MSP multiplex section, and entering step 6;

step 6: if MSP protection is configured, judging whether an optical path protected by the MSP is in an interrupted optical path set, if so, interrupting the optical path, adding the interrupted optical path into the interrupted optical path set, if not, not interrupting the optical path, ensuring a normal channel and a normal service, and recording that the unprotected type is 'MSP protection';

and 7: judging whether the light paths are traversed completely, if not, entering step 3; if the traversal is completed, inquiring all channels borne by the interrupted light path, and entering step 8;

and 8: traversing the channels according to the sequence;

and step 9: judging whether the channel has SNCP protection, if so, traversing the main and standby routes of the channel, comparing the main and standby routes with the interrupted light path set, if not, the channel is not interrupted, switching the channel, the service carried by the channel is normal, recording the protection type as SNCP protection, and entering step 12; otherwise, if the intersection exists, the channel is interrupted, and the step 10 is entered;

step 10: inquiring the service carried by the interrupt channel;

step 11: judging whether the service has 2M1+1 protection, if so, inquiring whether the protection channel is in a channel set carried by an interrupted light path, if so, judging whether the protection channel has SNCP protection, if so, traversing main and standby routes of the channel, comparing the main and standby routes with the interrupted light path set, if the main and standby routes and the interrupted light path do not intersect, the channel is not interrupted, the service carried by the channel is normal, recording that the protection type is 'SNCP protection', otherwise, the channel is interrupted and the service is interrupted if the intersection exists; if the protection channel is not in the channel set carried by the interrupted light path, the service is affected, and the record protection type is '2M 1+1 protection is configured';

step 12: and judging whether the channel traversal is completed or not, if not, entering the step 8, and if so, ending the process.

2. The method for analyzing the overhaul risk of the electric power communication system according to claim 1, wherein the method comprises the following steps: further comprising: and when the service route is the 0 standby route, directly providing a standby route service list and a corresponding main route, and if a user puts forward a maintenance requirement, prompting service interruption.

3. The method for analyzing the overhaul risk of the electric power communication system according to claim 1, wherein the method comprises the following steps: further comprising: and when the service route is the n +1 coincident route, giving a n +1 coincident route service list and a coincident part, and if a user puts forward a maintenance requirement of the coincident part, prompting service interruption.

4. The method for analyzing the overhaul risk of the electric power communication system according to claim 2, wherein the method comprises the following steps: the 0 backup route is a main route with only one service carrying the operating service, and no backup route exists, so that once the main route is overhauled at a certain position, the service is necessarily interrupted.

5. The method for analyzing the overhaul risk of the electric power communication system according to claim 3, wherein the method comprises the following steps: the n +1 superposed route is a service which has a main route and a plurality of standby routes, but the main route and all the standby routes pass through the same equipment or the same link, and once the superposed part is overhauled, the service is necessarily interrupted.

6. The method for analyzing the overhaul risk of the electric power communication system according to claim 1, wherein the method comprises the following steps: the method for carrying out the N-X analysis and judging the state of the light path comprises the following steps:

step 1.1: starting single-point analysis on the first resource, completing the N-1 analysis of the current communication network service, and obtaining the conclusion whether the light path is influenced and the influence degree;

step 1.2: on the basis of the N-1 analysis result, marking the resources influenced by the single point in the communication network, setting the resources to be in an unavailable state, and providing a data basis for N-2 analysis;

step 1.3: taking the network and resource state marked by the N-1 analysis as the basis, taking out the next resource for N-2 analysis, wherein the process is as described in the step 1.1-the step 1.2;

step 1.4: and on the basis of the mark states accumulated for the previous time in sequence until the Xth resource is analyzed, obtaining an N-X light path analysis conclusion and outputting a report.

7. The method for analyzing the overhaul risk of the electric power communication system according to claim 6, wherein the method comprises the following steps: and the light path analysis conclusion is that the light path is not influenced and is interrupted.

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