CN106506237A - A kind of Fault Locating Method of substation communication network and device - Google Patents
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Abstract
A kind of Fault Locating Method of substation communication network and device is embodiments provided, its technical problem that position occurs cannot be analyzed for solving existing network message analyser.Present invention method includes：Network connection matrix is obtained according to the topology information of intelligent substation communication network, topological sum message transmissions mode according to intelligent substation communication network obtains the transmission path of each link packet and forms corresponding message transmissions path matrix, by the maximum element of numerical value in the fault location matrix in the first formula calculating first formula and determine in corresponding network there is location of fault according to the network connection matrix and the message transmissions path matrix, solve existing network message analyser and cannot analyze its technical problem that position occurs.
Description
Technical Field
The invention relates to the field of communication network fault positioning, in particular to a fault positioning method and device for a transformer substation communication network.
Background
Under the technical mode of the intelligent substation, the switching network replaces complex cable wiring in a conventional substation, the information sharing capability among devices in the substation is greatly improved, and a favorable foundation is provided for realizing a more advanced intelligent protection control strategy and a more efficient operation and maintenance system architecture. A complete operation and maintenance system is formed in a conventional substation, but a plurality of operation and maintenance problems still exist, for example, if faults such as cable connection disconnection and the like occur, secondary information transmission is blocked, and the faults can be found out through complex line inspection work. Networking of the intelligent substation increases more uncertainty for information transmission, but the current method for searching for the faults still continues to use the thought of the conventional substation, so that on one hand, higher requirements are provided for operators on knowledge (such as network topology, message publishing and subscribing relation and the like) to be mastered and fault positioning experience; on the other hand, the accuracy and efficiency of artificial fault positioning are difficult to ensure, and great challenges are brought to safe and reliable operation of the secondary system of the intelligent substation.
The network message analyzer becomes standard configuration equipment of an intelligent substation secondary system, and is an important auxiliary tool for developing substation communication network fault diagnosis. The network message analyzer has the main functions of realizing important functions of message recording and analysis, network flow monitoring, message abnormity inspection and alarm and the like by collecting and analyzing all messages in a network.
The network-based message analyzer can analyze whether faults and abnormalities exist, but cannot analyze the occurrence reasons and positions of the faults and the abnormalities. It can be seen that the functions of the current network message analyzer are limited to alarm for abnormalities and faults in the network, but the final troubleshooting and reason analysis of the faults are completed by operators. However, the data volume displayed by the NA is huge and mixed, and especially when a serious fault such as information transmission interruption caused by a device port or link fault occurs, a large amount of burst alarm information displayed by the NA can leave operators unconscious, so that the fault diagnosis and analysis process is excessively dependent on field experience of manufacturers and operators, and great challenges are brought to safe and reliable operation of a secondary system of an intelligent substation.
Therefore, the fact that the existing network message analyzer cannot analyze the occurrence position of the network message analyzer is a technical problem to be solved by those skilled in the art.
Disclosure of Invention
The embodiment of the invention provides a fault positioning method and device for a transformer substation communication network, which are used for solving the technical problem that the existing network message analyzer cannot analyze the occurrence position of the transformer substation communication network.
The embodiment of the invention provides a fault positioning method for a transformer substation communication network, which comprises the following steps:
s1: acquiring a network connection matrix according to topology information of the intelligent substation communication network, acquiring transmission paths of messages of all links according to topology and message transmission modes of the intelligent substation communication network, and forming a corresponding message transmission path matrix;
s2: calculating the element with the largest value in the fault positioning matrix in the first formula through a first formula according to the network connection matrix and the message transmission path matrix, and determining the position of the fault in the corresponding network;
the first formula is:
wherein, Km×mIs an intermediate matrix, Cm×mFor the network connection matrix, Dm×mIs the message transmission path matrix, Gm×mAnd m is the number of ports in the communication network of the intelligent substation, p is a message link for alarming, and n is a message link shared in the communication network.
Preferably, the step S1 is followed by:
and monitoring MMS warning information in a communication network through a network message analyzer, and acquiring a message link in which warning occurs according to the MMS warning information.
Preferably, the step S1 is preceded by:
receiving and analyzing the MMS warning information in the communication network in real time, and if the MMS warning information contains MMS message broken link warning information, entering step S1.
Preferably, the step S2 specifically includes:
calculating a fault location matrix in the first formula through a first formula according to the network connection matrix and the message transmission path matrix;
the largest element in the matrix is g according to the fault locationijIf i-j corresponds to a physical connection, it indicates that a failure has occurred at port i or j or the fiber between the two ports, if i-j corresponds to a logical connectionThen the failure is indicated to exist on the switch corresponding to the logical connection.
Preferably, the acquiring a network connection matrix according to the topology information of the intelligent substation communication network specifically includes: network connection matrix Cm×mThe method is specifically used for describing the communication relationship among the communication network ports of the transformer substation and is obtained by the following formula:
wherein,
the connection relationship is mainly of two types: the physical connection and the logical connection are established, wherein the physical connection between the ports is mainly established through physical media such as optical fibers, and the logical connection is mainly established through the exchange control logic of the switch on the message.
Preferably, the acquiring transmission paths of the messages of each link according to the topology and the message transmission mode of the communication network of the intelligent substation and forming the corresponding message transmission path matrix specifically includes: if the transmission path of a link message from the port a to the port b is Pa-bDefining a message transmission path matrix D according to the transmission path of the message and the following formulam×m：
Wherein,
the embodiment of the invention provides a fault positioning device of a transformer substation communication network, which is used for positioning based on the fault positioning method of the transformer substation communication network and comprises the following steps:
the matrix acquisition module is used for acquiring a network connection matrix according to topology information of the intelligent substation communication network, acquiring transmission paths of messages of all links according to topology and a message transmission mode of the intelligent substation communication network and forming a corresponding message transmission path matrix;
and the formula calculation module is used for calculating the element with the largest value in the fault positioning matrix in the first formula through the first formula according to the network connection matrix and the message transmission path matrix and determining the position of the fault in the corresponding network.
Preferably, the fault locating device for a substation communication network according to an embodiment of the present invention further includes:
and the alarm message link acquisition module is used for monitoring MMS alarm information in a communication network through a network message analyzer and acquiring the message link generating the alarm according to the MMS alarm information.
Preferably, the fault locating device for a substation communication network according to an embodiment of the present invention further includes:
and the real-time monitoring module is used for receiving and analyzing MMS warning information in a communication network in real time, and if the MMS warning information contains MMS message broken link warning information, the matrix acquisition module is executed.
Preferably, the formula calculating module specifically includes:
the matrix calculation unit is used for calculating a fault location matrix in a first formula through the first formula according to the network connection matrix and the message transmission path matrix;
a location determination unit for determining that the largest element in the fault location matrix is gijIf i-j corresponds to a physical connection, it indicates that a failure occurred at port i orj or on the fiber between two ports, if i-j corresponds to a logical connection, it indicates that a failure exists on the switch corresponding to the logical connection.
According to the technical scheme, the embodiment of the invention has the following advantages:
according to the embodiment of the invention, a network connection matrix is obtained according to topology information of an intelligent substation communication network, a transmission path of each link message is obtained according to topology and a message transmission mode of the intelligent substation communication network, a corresponding message transmission path matrix is formed, the element with the largest value in a fault location matrix in a first formula is calculated through the first formula according to the network connection matrix and the message transmission path matrix, and the position of a fault in the corresponding network is determined, so that the technical problem that the existing network message analyzer cannot analyze the occurrence position of the fault is solved.
In addition, the method of the embodiment of the invention also realizes the real-time monitoring of the communication network by monitoring the MMS warning information in the communication network in real time.
The method provided by the embodiment of the invention has enough accuracy in the fault positioning range, can guide operation and maintenance personnel to quickly find out the fault position, quickly recover the normal operation of the communication network of the transformer substation, greatly improve the operation and maintenance efficiency of the intelligent transformer substation, and improve the operation reliability of the secondary system of the intelligent transformer substation.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic diagram of an embodiment of a fault location method for a substation communication network according to an embodiment of the present invention;
fig. 2 is a schematic diagram of another embodiment of a fault location method for a substation communication network according to an embodiment of the present invention;
fig. 3 is a schematic diagram of an embodiment of a fault location device of a substation communication network according to an embodiment of the present invention;
fig. 4 is a schematic diagram of an application example of the fault location method for the substation communication network according to the embodiment of the present invention.
Detailed Description
The embodiment of the invention provides a fault positioning method and device for a transformer substation communication network, which are used for solving the technical problem that the existing network message analyzer cannot analyze the occurrence position of the transformer substation communication network.
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, an embodiment of the present invention provides a method for locating a fault in a substation communication network, including:
101: acquiring a network connection matrix according to topology information of the intelligent substation communication network, acquiring transmission paths of messages of all links according to topology and message transmission modes of the intelligent substation communication network, and forming a corresponding message transmission path matrix;
102: calculating the element with the largest value in the fault positioning matrix in the first formula through a first formula according to the network connection matrix and the message transmission path matrix, and determining the position of the fault in the corresponding network;
the first formula is:
wherein, Km×mIs an intermediate matrix, Cm×mFor the network connection matrix, Dm×mIs the message transmission path matrix, Gm×mAnd m is the number of ports in the communication network of the intelligent substation, p is a message link for alarming, and n is a message link shared in the communication network.
The above is a detailed description of an embodiment of a fault location method for a substation communication network according to an embodiment of the present invention, and another embodiment of the fault location method for the substation communication network according to the embodiment of the present invention is described in detail below.
Referring to fig. 2, an embodiment of the present invention provides a method for locating a fault in a substation communication network, including:
201: receiving and analyzing the MMS warning information in the communication network in real time, and entering step 201 if the MMS warning information contains MMS message broken link warning information.
202: acquiring a network connection matrix according to topology information of the intelligent substation communication network, acquiring transmission paths of messages of all links according to topology and message transmission modes of the intelligent substation communication network, and forming a corresponding message transmission path matrix;
203: and monitoring MMS warning information in a communication network through a network message analyzer, and acquiring a message link in which warning occurs according to the MMS warning information.
204: calculating a fault location matrix in the first formula through a first formula according to the network connection matrix and the message transmission path matrix;
205: the largest element in the matrix is g according to the fault locationijIf i-j corresponds to a physical connection, it means that a failure occurs on port i or j or on an optical fiber between two ports, and if i-j corresponds to a logical connection, it means that a failure exists on a switch corresponding to the logical connection.
The first formula is:
wherein, Km×mIs an intermediate matrix, Cm×mFor the network connection matrix, Dm×mIs the message transmission path matrix, Gm×mAnd m is the number of ports in the communication network of the intelligent substation, p is a message link for alarming, and n is a message link shared in the communication network.
The acquiring of the network connection matrix according to the topology information of the intelligent substation communication network specifically comprises: network connection matrix Cm×mThe method is specifically used for describing the communication relationship among the communication network ports of the transformer substation and is obtained by the following formula:
wherein,
the connection relationship is mainly of two types: the physical connection and the logical connection are established, wherein the physical connection between the ports is mainly established through physical media such as optical fibers, and the logical connection is mainly established through the exchange control logic of the switch on the message.
The method for acquiring the transmission path of each link message according to the topology and the message transmission mode of the intelligent substation communication network and forming the corresponding message transmission path matrix specifically comprises the following steps: if the transmission path of a link message from the port a to the port b is Pa-bDefining a message transmission path matrix D according to the transmission path of the message and the following formulam×m：
Wherein,
in the above, another embodiment of the method for locating a fault of a substation communication network according to the embodiment of the present invention is described in detail, and in the following, an embodiment of a device for locating a fault of a substation communication network according to the embodiment of the present invention is described in detail.
Referring to fig. 3, an embodiment of the present invention provides an embodiment of a fault location device for a substation communication network, where the locating is performed based on the above-mentioned fault location method for the substation communication network, and the method includes:
the matrix acquisition module 301 is configured to acquire a network connection matrix according to topology information of the intelligent substation communication network, acquire a transmission path of each link message according to topology and a message transmission mode of the intelligent substation communication network, and form a corresponding message transmission path matrix;
a formula calculating module 302, configured to calculate, according to the network connection matrix and the packet transmission path matrix, an element with a largest value in the fault location matrix in the first formula through a first formula, and determine a location where a fault exists in a corresponding network.
The fault locating device for the transformer substation communication network provided by the embodiment of the invention further comprises:
and an alarm message link obtaining module 303, configured to monitor MMS alarm information in a communication network through a network message analyzer, and obtain a message link where an alarm occurs according to the MMS alarm information.
The fault locating device for the transformer substation communication network provided by the embodiment of the invention further comprises:
the real-time monitoring module 304 is configured to receive and analyze MMS alarm information in a communication network in real time, and if the MMS alarm information includes MMS message link breaking alarm information, execute the matrix obtaining module 301.
The formula calculating module 302 specifically includes:
a matrix calculation unit 401, configured to calculate a fault location matrix in a first formula according to the network connection matrix and the packet transmission path matrix through the first formula;
a location determining unit 402 for determining that the largest element in the fault location matrix is gijIf i-j corresponds to a physical connection, it means that a failure occurs on port i or j or on an optical fiber between two ports, and if i-j corresponds to a logical connection, it means that a failure exists on a switch corresponding to the logical connection.
The above is a detailed description of an embodiment of a fault location device of a substation communication network provided in the embodiment of the present invention, and an application example of the fault location method of the substation communication network provided in the embodiment of the present invention is described in detail below.
Referring to fig. 4, an application example of the method for locating a fault in a substation communication network according to the embodiment of the present invention includes:
according toTopology information of communication network of intelligent substation to form connection matrix C of communication networkm×m；
Analyzing and obtaining the transmission path of each link message through the topology and message transmission mode of the intelligent substation communication network to form a corresponding message transmission path matrix Dm×m；
Then using network message analyzer to receive and analyze MMS warning information in communication network;
once MMS message chain breakage warning information exists, collecting all messages with chain breakage;
calculating a fault diagnosis matrix G using a first formulam×mAnd selecting the element with the maximum value;
and positioning the fault occurrence position according to the maximum numerical value element.
1) Transformer substation communication network port connection relation matrix
Definition matrix Cm×mTo describe the communication relationship between the ports of the substation communication network, where m is the number of ports in the intelligent substation communication network.
Wherein,
there are two main types of connection relationships here: the physical connection and the logical connection are established, wherein the physical connection between the ports is mainly established through physical media such as optical fibers, and the logical connection is mainly established through the exchange control logic of the switch on the message.
2) Definition of message transmission path matrix
If the transmission path of a link message from the port a to the port b is Pa-bIf the transmission path for the message is { a-c, c-b }, then a message transmission path matrix D may be defined for the transmission path of the messagem×m
Wherein,
3) alarm signal required for fault location
The method needs to utilize MMS warning information in communication network, MMS warning and is divided into two kinds-link interruption warning and data abnormal warning.
The link interruption alarm of the intelligent substation communication network comprises an SV link and a GOOSE link interruption alarm, the fault alarm is the most common and has the greatest influence on a relay protection system, and the reasons are various, such as switch hardware fault, port fault, optical fiber fault, switch forwarding error and the like. When the faults occur, the influence range is generally large, a plurality of link interruption alarms can be triggered in one time, the safe operation of the protection system is seriously influenced, and at the moment, operating personnel are required to be capable of analyzing the cause of the link interruption and positioning the faults in a short time. Therefore, the fault diagnosis for the link down alarm is the focus of the research in this chapter.
The data abnormity alarm of the communication network comprises SV sampling data abnormity and GOOSE data abnormity, such as multicast MAC abnormity, APPID abnormity, quality bit abnormity and the like. Considering that the probability of error codes of the message in the network is low, if data abnormal alarm continuously occurs, the fault reason can be determined to exist in the message sending equipment, and excessive analysis is not needed, so that the data abnormal alarm is not the focus of attention of the fault diagnosis method.
4) Implementation formula of fault positioning method
Considering that the probability of the occurrence of the complex fault is very low, the method is based on the assumption that only a single point exists in the intelligent substation communication network. Typically, when a failure occurs in a communication network, multiple link down alarm messages are often present. If p message links are reported to alarm at the same time and n message links are present in the communication network, the network fault can be located by the first formula, namely formula (1). Wherein the matrix Gm×mIs a fault location matrix, Km×mIs an intermediate matrix.
After calculation, the fault localization matrix Gm×mThe connection corresponding to the element with the largest value is the location of the fault in the network. If the largest element in the fault location matrix is gijAnd i-j corresponds to a physical connection, this indicates that a fault has occurred at port i or j or the fiber between the two ports. And if the i-j corresponds to the logical connection, indicating that the fault exists on the switch corresponding to the logical connection.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A fault positioning method for a transformer substation communication network is characterized by comprising the following steps:
s1: acquiring a network connection matrix according to topology information of the intelligent substation communication network, acquiring transmission paths of messages of all links according to topology and message transmission modes of the intelligent substation communication network, and forming a corresponding message transmission path matrix;
s2: calculating the element with the largest value in the fault positioning matrix in the first formula through a first formula according to the network connection matrix and the message transmission path matrix, and determining the position of the fault in the corresponding network;
the first formula is:
wherein, Km×mIs an intermediate matrix, Cm×mFor the network connection matrix, Dm×mIs the message transmission path matrix, Gm×mAnd m is the number of ports in the communication network of the intelligent substation, p is a message link for alarming, and n is a message link shared in the communication network.
2. The method for locating the fault of the substation communication network according to claim 1, further comprising, after the step S1:
and monitoring MMS warning information in a communication network through a network message analyzer, and acquiring a message link in which warning occurs according to the MMS warning information.
3. The method for locating the fault of the substation communication network according to claim 1, wherein the step S1 is preceded by:
receiving and analyzing the MMS warning information in the communication network in real time, and if the MMS warning information contains MMS message broken link warning information, entering step S1.
4. The method for locating the fault of the substation communication network according to claim 1, wherein the step S2 specifically includes:
calculating a fault location matrix in the first formula through a first formula according to the network connection matrix and the message transmission path matrix;
the largest element in the matrix is g according to the fault locationijIf i-j corresponds to a physical connection, it indicates that a failure has occurred at port i or j or the fiber between the two ports, if i-j corresponds to a logical connectionAnd then, the failure exists on the switch corresponding to the logical connection.
5. The fault location method for the substation communication network according to claim 1, wherein the obtaining of the network connection matrix according to the topology information of the intelligent substation communication network specifically comprises: network connection matrix Cm×mThe method is specifically used for describing the communication relationship among the communication network ports of the transformer substation and is obtained by the following formula:
wherein,
the connection relationship is mainly of two types: the physical connection and the logical connection are established, wherein the physical connection between the ports is mainly established through physical media such as optical fibers, and the logical connection is mainly established through the exchange control logic of the switch on the message.
6. The method for locating the fault of the substation communication network according to claim 1, wherein the obtaining of the transmission path of each link message according to the topology and the message transmission mode of the intelligent substation communication network and the forming of the corresponding message transmission path matrix specifically include: if the transmission path of a link message from the port a to the port b is Pa-bDefining a message transmission path matrix D according to the transmission path of the message and the following formulam×m：
Wherein,
。
7. a fault location device of a substation communication network, which is located based on the fault location method of the substation communication network as claimed in any one of claims 1 to 6, the fault location device comprising:
the matrix acquisition module is used for acquiring a network connection matrix according to topology information of the intelligent substation communication network, acquiring transmission paths of messages of all links according to topology and a message transmission mode of the intelligent substation communication network and forming a corresponding message transmission path matrix;
and the formula calculation module is used for calculating the element with the largest value in the fault positioning matrix in the first formula through the first formula according to the network connection matrix and the message transmission path matrix and determining the position of the fault in the corresponding network.
8. The fault locating device of a substation communication network according to claim 7, further comprising:
and the alarm message link acquisition module is used for monitoring MMS alarm information in a communication network through a network message analyzer and acquiring the message link generating the alarm according to the MMS alarm information.
9. The fault locating device of a substation communication network according to claim 7, further comprising:
and the real-time monitoring module is used for receiving and analyzing MMS warning information in a communication network in real time, and if the MMS warning information contains MMS message broken link warning information, the matrix acquisition module is executed.
10. The fault location device of the substation communication network according to claim 7, wherein the formula calculation module specifically includes:
the matrix calculation unit is used for calculating a fault location matrix in a first formula through the first formula according to the network connection matrix and the message transmission path matrix;
a location determination unit for determining that the largest element in the fault location matrix is gijIf i-j corresponds to a physical connection, it means that a failure occurs on port i or j or on an optical fiber between two ports, and if i-j corresponds to a logical connection, it means that a failure exists on a switch corresponding to the logical connection.
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| CN110879608A (en) * | 2019-10-18 | 2020-03-13 | 合肥工业大学 | Unmanned system formation rapid self-adaptive decision-making method and device under uncertain environment |
| CN112821565A (en) * | 2021-03-09 | 2021-05-18 | 国家电网有限公司 | Automatic defect positioning method for relay protection system level test |
| CN113740666A (en) * | 2021-08-27 | 2021-12-03 | 西安交通大学 | Method for positioning storm source fault of data center power system alarm |
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