CN104579839A - Transformer substation communication network state online monitoring system and method - Google Patents
Transformer substation communication network state online monitoring system and method Download PDFInfo
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Abstract
The invention provides a transformer substation communication network state online monitoring system and method. The monitoring system comprises a state managing area, a state monitoring area and a state judging area. A communication network flow failure action threshold value is set and calculated through the state managing area; exchange messages at all ports of all exchangers are mirrored to the monitoring system in real time through the state monitoring area, the messages, devices and network performance are monitored in real time, the network measured flow is inputted to the state judging area, and meanwhile the message analysis content is conveyed to the state judging area; initial failure judgment is conducted through the state judging area according to the monitoring message time sequence and the message coding reasonability, the network measured flow and the network flow failure action threshold value are compared, and network failures are positioned, controlled and recovered. The transformer substation communication network state online monitoring system and method have the advantages that the online monitoring capacity and the real-time protection capacity are achieved, and the requirement of an intelligent transformer substation for the reliability of a communication network can be met.
Description
Technical field
The present invention relates to network monitor field, particularly a kind of substation communication network state on_line monitoring system and method.
Background technology
The substation data transmission of networking is that intelligent substation is different from the of paramount importance feature of traditional transformer station with information sharing.Communication network is the main thoroughfare of intelligent substation transfer of data and information sharing, also be that intelligent substation normally runs the basis with functional realiey such as scheduling controlling, therefore ensure communications network security stable operation, the reliability improving communication network is significant for the safe and stable operation of intelligent substation.For promoting the reliability of substation communication network, improve control ability, the substation communication network condition monitoring system that need Erecting and improving and the Contents for Monitoring setting method that match of operations staff to communication network.
At present, intelligent substation communication network does not also form the unified complete transformer station secondary system monitoring system towards communication network.The mode that Most current intelligent substation communication network only adopts communications records and off-line analysis to combine carries out communications network monitors control.Specifically, this substation communication network control mode needs access information monitoring device in a communication network, information monitoring device indistinguishably carries out catching, resolve and storing of all kinds of message of transformer station, when carrying out Analysis of Network Malfunction or operation conditions inspection etc. and network message being had to the work of query demand, need to call recorded message by under line, carry out Network Abnormal trouble shoot and failure process is recollected.
The communication network monitoring mode that intelligent substation communication record and off-line analysis combine, need on the one hand to have Large Copacity, high reliability memory device for recording the network information, increase transformer substation construction infusion of financial resources; On the other hand, the analytic record message that Analysis of Network Malfunction calls only accounts for 0.1% of whole recorded message, causes a large amount of recorded message to waste.Even more important; the communication network monitoring method of network service record and off-line analysis is a kind of solution of ex-post analysis; namely the message analysis personnel needing to call stored messages and specialty after accident occurs carry out network failure and search and solve with fault; this communication network protecting control mode does not possess the ability of on-line monitoring, instant protection, is difficult to meet intelligent substation for communication network reliability requirement.
Summary of the invention
The technical problem to be solved in the present invention is; do not possess on-line monitoring and instant protective capability for prior art above-mentioned, be difficult to meet the defect that intelligent substation requires for communication network reliability, provide a kind of and possess on-line monitoring and instant protective capability, the substation communication network state on_line monitoring system and method for intelligent substation for communication network reliability requirement can be met.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of substation communication network state on_line monitoring system, comprise condition managing region, status monitoring region and condition judgement region, described condition managing region is by network traffics computational methods, the adaptive setting communication network traffic fault actions threshold values of study communication network physical structure information, to give out a contract for a project in conjunction with all kinds of messages of IEC61850 regulation rule and setting; Described status monitoring region and described condition managing joint area, in real time each for all switches port being exchanged message mirror extremely described substation communication network state on_line monitoring system, and Real-Time Monitoring is carried out to message, equipment and network performance, and the network implementation measurement of discharge obtained is input to described condition judgement region, simultaneously by resolving message and parsing content being sent to described condition judgement region; Described condition judgement region respectively with described condition managing region and status monitoring joint area, for carrying out preliminary fault verification according to described parsing content by the reasonability of monitoring message sequential and message coding and by described network implementation measurement of discharge and network traffics fault actions threshold values being contrasted, to carry out the location of network failure, control and recovery.
In substation communication network state on_line monitoring system of the present invention, described parsing content comprises message APPID, state StNum and sequence number SqNum.
In substation communication network state on_line monitoring system of the present invention, described condition managing region comprises network physical MIM message input module, SCD file parsing module, message status administration module, equipment state administration module and network state administration module, described network physical MIM message input module is connected with information interactive bus, for learning communication network physical structure information, described SCD file parsing module is connected with described information interactive bus, for resolving SCD file, described message status administration module is connected with described information interactive bus, for managing message status, described equipment state administration module is connected with described information interactive bus, for managing equipment state, described network state administration module is connected with described information interactive bus, for managing network state.
In substation communication network state on_line monitoring system of the present invention, described status monitoring region comprises network message mirror module, flow delay statistical module and packet parsing module, described network message mirror module is used in real time each for all switches port being exchanged message mirror to described substation communication network state on_line monitoring system, described flow delay statistical module is connected with described network message mirror module and information interactive bus respectively, add up for the real-time flow to communication network device port and message delay, described packet parsing module is connected with described flow delay statistical module, for resolving message and parsing content being sent to described condition judgement region.
In substation communication network state on_line monitoring system of the present invention, described condition judgement region comprises message reasonability determination module, equipment state determination module, network condition determination module and protecting control module; Described message reasonability determination module respectively with described packet parsing module and information interactive bus is connected, for according to described parsing content by monitoring message sequential and message coding carries out message reasonableness check; Described equipment state determination module is respectively with described message reasonability determination module with information interactive bus is connected, for judging the state of equipment; Described network condition determination module is connected with described information interactive bus, for judging network condition; Described protecting control module is respectively with described message reasonability determination module, network condition determination module with equipment state determination module is connected, for carrying out protecting control when communication network status is abnormal.
In substation communication network state on_line monitoring system of the present invention, described network state administration module comprises network information input module, message rate analysis module, trigger relation analysis module, Network topology module, VLAN analysis module, message length analysis module, message distribution calculation module, flow load computing module, service curves computing module, arrival curve computing module, time delay distribution calculation module and network information output module, described network information input module and message distribution calculation module all with described message rate analysis module, trigger relation analysis module, Network topology module, VLAN analysis module is connected with message length analysis module, and described flow load computing module is connected with described message rate analysis module and message distribution calculation module respectively, described service curves computing module respectively with described message rate analysis module, message distribution calculation module is connected with message length analysis module, described arrival curve computing module is connected with described message distribution calculation module respectively, described time delay distribution calculation module is connected with described service curves computing module and arrival curve computing module respectively, and described network information output module is connected with described flow load computing module and time delay distribution calculation module respectively, described network information input module is for inputting network topology structure, message length, packet sending speed, VLAN division and trigger relation information, described network information output module is used for output network flow load and maximum delay distributed intelligence.
In substation communication network state on_line monitoring system of the present invention, described message comprises heartbeat GOOSE message, sampled value SV message and MMS message, and described MMS message comprises MMS Initial message, MMS runs message and MMS stops message; The Contents for Monitoring of described heartbeat GOOSE message comprises message integrality, message compliance, message transmitting time, test serial number and subscribing relationship; The Contents for Monitoring of described sampled value SV message comprises message integrality, message compliance, message transmission interval, test serial number and subscribing relationship; The Contents for Monitoring of described MMS Initial message comprises service content, response time delay and respond services; The Contents for Monitoring that described MMS runs message comprises message integrality, test serial number, data traffic, data parameters and message transmissions time delay; The Contents for Monitoring that described MMS stops message comprises termination message.
In substation communication network state on_line monitoring system of the present invention, described equipment comprises switch and IED equipment, and the status monitoring of described switch comprises address table monitoring, logical cyclic ring network monitoring, switch memory and supply voltage; The status monitoring of described IED equipment comprises Parallel Redundancy Protocol and clock synchronous message, and the monitoring of described network performance comprises flow distribution monitoring and time delay distribution monitoring.
The invention still further relates to a kind of substation communication network state on_line monitoring method, comprise the steps:
A) initialization substation communication network state online monitoring system;
B) described substation communication network state online monitoring system mirror image obtains network service message, resolves and network flow calculation and message delay;
C) by real-time distributed for network Monitoring Data input state determinating area, message reasonability determination module judges whether the message inputted exists exception, in this way, result of determination is input to network condition determination module, performs step F); Otherwise, carry out equipment state judgement, perform step D);
D) described substation communication network state on_line monitoring system obtains target monitoring content with carrying out between monitored equipment communicating, and the content of described target monitoring content and equipment state administration module is contrasted, judge whether to occur abnormal conditions, in this way, result of determination is input to network condition determination module, performs step F); Otherwise, carry out network performance judgement, perform step e);
E) described network traffics and message delay are contrasted with network performance setting value respectively, judge whether to occur abnormal conditions, in this way, result of determination is input to protecting control module, perform step F); Otherwise, perform step F);
F) judge whether network topology and the message physical message of the original input in condition managing region change, and in this way, return steps A); Otherwise, return step B).
In substation communication network state on_line monitoring method of the present invention, described steps A) comprise further:
A1) described substation communication network state on_line monitoring system is arranged in a communication network;
A2) by resolving SCD file, communication network physical message input and network performance adjusted message status administration module, equipment state administration module and network state administration module information input.
Implement substation communication network state on_line monitoring system and method for the present invention, have following beneficial effect: due to using state management area, status monitoring region and condition judgement region, condition managing region is by network traffics computational methods, the adaptive setting communication network traffic fault actions threshold values of study communication network physical structure information, to give out a contract for a project in conjunction with all kinds of messages of IEC61850 regulation rule and setting; Status monitoring region is used in real time each for all switches port being exchanged message mirror to substation communication network state on_line monitoring system, and Real-Time Monitoring is carried out to message, equipment and network performance, and the network implementation measurement of discharge obtained is input to condition judgement region, simultaneously by resolving message and parsing content being sent to condition judgement region; Condition judgement region is used for carrying out preliminary fault verification by the reasonability of monitoring message sequential and message coding and by network implementation measurement of discharge and network traffics fault actions threshold values being contrasted according to resolving content; to carry out the location of network failure, control and recovery; owing to being Real-Time Monitoring, so it possesses on-line monitoring and instant protective capability, can meet intelligent substation for communication network reliability requirement.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of system in substation communication network state on_line monitoring system and method for the present invention embodiment;
Fig. 2 is the traffic model schematic diagram of substation communication network state on_line monitoring system and the network equipment in described embodiment;
Fig. 3 is the concrete structure schematic diagram of network state administration module in described embodiment;
Fig. 4 is the flow chart of monitoring method in described embodiment;
Fig. 5 is the particular flow sheet arranging described substation communication network state on_line monitoring system in described embodiment in a communication network.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
In substation communication network state on_line monitoring system and method embodiment of the present invention, the structural representation of its substation communication network state on_line monitoring system as shown in Figure 1.In Fig. 1, this substation communication network state on_line monitoring system comprises condition managing region 1, status monitoring region 2 and condition judgement region 3, wherein, condition managing region 1 is by network traffics computational methods, the adaptive setting communication network traffic fault actions threshold values of study communication network physical structure information, to give out a contract for a project in conjunction with all kinds of messages of IEC61850 regulation rule and setting; Status monitoring region 2 is connected with condition managing region 1, in real time each for all switches port being exchanged message mirror to substation communication network state on_line monitoring system, and Real-Time Monitoring is carried out to message, equipment and network performance, and the network implementation measurement of discharge obtained is input to condition judgement region 3, simultaneously by resolving message and the parsing content obtained being sent to condition judgement region 3; Condition judgement region 3 is connected with condition managing region 1 and status monitoring region 2 respectively, for carrying out preliminary fault verification according to above-mentioned parsing content by the reasonability of monitoring message sequential and message coding and by network implementation measurement of discharge and network traffics fault actions threshold values being contrasted, to carry out the location of network failure, control and recovery.Owing to being Real-Time Monitoring, so it possesses on-line monitoring and instant protective capability, can meet intelligent substation for communication network reliability requirement.It is worth mentioning that, above-mentioned parsing content comprises message APPID, state StNum and sequence number SqNum.
In the present embodiment, specifically, condition managing region 1 comprises network physical MIM message input module 11, SCD file parsing module 12, message status administration module 13, equipment state administration module 14 and network state administration module 15, network physical MIM message input module 11 is connected with information interactive bus, for learning communication network physical structure information, SCD file parsing module 12 is connected with information interactive bus, for resolving SCD file, message status administration module 13 is connected with information interactive bus, for managing message status, equipment state administration module 14 is connected with information interactive bus, for managing equipment state, network state administration module 15 is connected with information interactive bus, for managing network state.
In the present embodiment, status monitoring region 2 comprises network message mirror module 21, flow delay statistical module 22 and packet parsing module 23, network message mirror module 21 is for exchanging message mirror to substation communication network state on_line monitoring system by each for all switches port in real time, flow delay statistical module 22 is connected with network message mirror module 21 and information interactive bus respectively, add up for the real-time flow to communication network device port and message delay, packet parsing module 23 is connected with flow delay statistical module 22, for resolving message and the parsing content obtained being sent to condition judgement region 3.
In the present embodiment, condition judgement region 3 comprises message reasonability determination module 31, equipment state determination module 32, network condition determination module 33 and protecting control module 34; Message reasonability determination module 32 is connected with packet parsing module 23 and information interactive bus respectively, for according to above-mentioned parsing content by monitoring message sequential and message coding carries out message reasonableness check; Equipment state determination module 32 is respectively with message reasonability determination module 31 with information interactive bus is connected, for judging the state of equipment; Network condition determination module 33 is connected with information interactive bus, for judging network condition; Protecting control module 34 is connected with message reasonability determination module 31, network condition determination module 33 and equipment state determination module 32 respectively, for carrying out protecting control when communication network status is abnormal.
Monitoring target is basis and the action foundation of the realization of transformer substation communication defencive function, and choose reasonable effectively can reflect the network monitor object of network condition and fault message, significant for communication network protection systems.IEC61850 standard specific definition intelligent substation exchanges message, comprise message format, transmission means, performance requirement, the contents such as service object, for setting up the communication network status monitoring and Protection control system that meet actual also compatible to IEC 61850 standard of intelligent substation engineering, the present invention is all kinds of message switching feature and service content under studying IEC61850 standard in great detail, the communications network monitors object chosen comprises network message, equipment state and network performance, and choose reasonable concludes the Contents for Monitoring of an object, for Protection control system provides real-time, effective communication network status describes.In the present embodiment, message comprises heartbeat GOOSE message, sampled value SV message and MMS message, and MMS message comprises MMS Initial message, MMS runs message and MMS stops message; The Contents for Monitoring of heartbeat GOOSE message comprises message integrality, message compliance, message transmitting time, test serial number and subscribing relationship; The Contents for Monitoring of sampled value SV message comprises message integrality, message compliance, message transmission interval, test serial number and subscribing relationship; The Contents for Monitoring of MMS Initial message comprises service content, response time delay and respond services; The Contents for Monitoring that MMS runs message comprises message integrality, test serial number, data traffic, data parameters and message transmissions time delay; The Contents for Monitoring that MMS stops message comprises termination message.The said equipment comprises switch and IED equipment (electrical secondary system IED equipment), and the status monitoring of switch comprises address table monitoring, logical cyclic ring network monitoring, switch memory and supply voltage; The status monitoring of IED equipment comprises Parallel Redundancy Protocol and clock synchronous message, and the monitoring of network performance comprises flow distribution monitoring and time delay distribution monitoring.In short, network message monitors contents such as mainly comprising sequence of message number, message reasonability and message compliance; Equipment state monitors and mainly comprises switch and the monitoring of electrical secondary system IED functions of the equipments; Network performance monitoring content mainly comprises communication network device port flow and message delay statistics.Below that the Detection of content of three kinds of network monitor objects that the present invention chooses is described in detail.
For network message; all kinds of message of transformer station is basis and the carrier of transformer station's scheduling controlling functional realiey; a large amount of transforming plant primary and electrical secondary system state information is carried in message switching procedure; multianalysis message content and feature; deeply excavate and the electrical secondary system information utilizing message to carry, for electrical secondary system status monitoring and protecting control significant.
IEC61850 standard specify intelligent substation message comprise towards transformer substation case (GOOSE) message of general object, sampled value (SV) message, manufacture message specification (MMS) and pair time message (IEEE1588) four class.Wherein GOOSE message is used for switching-state information and uploads and trip the control commands such as coincidences, and SV message is used for an information about power sampled data, and MMS message is used for the coordination of whole system, management and control, when IEEE1588 message is for synchronous pair of LA Management Room.Due to the normally separately networking of synchronous setting network, message status monitoring and control when the present invention does not comprise synchronous pair.As shown in table 1, table 2 and table 3, provide the Contents for Monitoring of GOOSE, SV, MMS message respectively and carry out labor.
Table 1 GOOSE message Contents for Monitoring and analysis
Table 2 SV message Contents for Monitoring and analysis
Table 3 MMS Contents for Monitoring and analysis
For equipment state, message status for carrier with communication network exchange message, reflects network according to message own content and attribute side and is connected and running status, need analyze for grasping network state further in conjunction with communication network device state.
IEC61850 sets up unified device description model and regulate expression to substation communication network equipment, the information model of its layering, classification build principle for operating personnel and watch-dog provide comprehensively, effectively, the monitoring target of specification, Contents for Monitoring and form of presentation, be the precondition that state of communication network of intelligent transformer station is monitored.At present; mainly the secondary device information models such as protection and measurement and control are provided in IEC61850 standard; be mainly used in intelligent electronic device (IED) physical state to describe; and the information model of monitoring for communication network status is lacked relatively, communication network IED equipment and switch do not play should have effect for network state analyses.
Therefore, the substation communication network state on_line monitoring system that the present invention proposes on message monitoring basis in conjunction with IED equipment and switch Contents for Monitoring promote further to communication network status control ability, switch and IED equipment condition monitoring content and analyze as shown in table 4.
Table 4 equipment condition monitoring content and analysis
For obtaining switch and IED status information of equipment, communication network status monitoring system needs to communicate with switch and IED equipment room.Fig. 2 is the traffic model schematic diagram of substation communication network state on_line monitoring system and the network equipment in the present embodiment, in Fig. 2, adopt Client/Server between condition monitoring system (client) and communication network device (server), communication service comprises:
The service such as Assocaite, Abort and Release is used for bilateral association;
The service such as GetServerDirectory, GetLogicalDeviceDirectory, GetLogicalNodeDirectory, GetDataDirectory and GetDataDefinition is used for directory access;
The service such as GetDataSetValues, GetDataSetDirectory, GetDataValues and SetURCBValues was uploaded for monitor data alarm, calling, cycle.
For network performance, COMMUNICATION NETWORK PERFORMANCES is the data target of direct reaction network state, is also the important evidence of electrical secondary system design and maintenance work.COMMUNICATION NETWORK PERFORMANCES index generally includes flow load rate, message delay, packet loss, the error rate and convergence etc., wherein, be flow load rate and message delay for of paramount importance two performance index of transformer station, all kinds of situation down-off of accurate Calculation network and time delay distribution also Study on Tuning network failure situation down-off and time delay situation of change, the timely perception for network failure situation is significant with control.
Intelligent substation communication network protection control mainly with equipment condition monitoring content, exchange message Contents for Monitoring and overall performance of network index for operating criterion; but intelligent substation communication network lacks computational analysis means that are normal and unusual condition lower network performance index at present; lack the evaluation method of network device state, cannot provide in detail for communication network protection seting, network performance and equipment state describe accurately.In the present embodiment, for effectively analyzing the actual measured value in network analysis status monitoring region 2, normally need to run network and failure operation state lower network performance index are adjusted, the network performance state analysis method that the present invention adopts a kind of network performance monitoring and setting management to be separated, specifically see Fig. 3.Fig. 3 is the concrete structure schematic diagram of network state administration module in the present embodiment.In Fig. 3, network state administration module 15 comprises network information input module 150, message rate analysis module 151, trigger relation analysis module 152, Network topology module 153, VLAN analysis module 154, message length analysis module 155, message distribution calculation module 156, flow load computing module 157, service curves computing module 158, arrival curve computing module 159, time delay distribution calculation module 160 and network information output module 161, wherein, network information input module 150 and message distribution calculation module 156 all with message rate analysis module 151, trigger relation analysis module 152, Network topology module 153, VLAN analysis module 154 is connected with message length analysis module 155, flow load computing module 157 is connected with message rate analysis module 151 and message distribution calculation module 156 respectively, service curves computing module 158 respectively with message rate analysis module 151, message distribution calculation module 156 is connected with message length analysis module 155, arrival curve computing module 159 is connected with message distribution calculation module 156 respectively, time delay distribution calculation module 160 is connected with service curves computing module 158 and arrival curve computing module 159 respectively, network information output module 161 is connected with flow load computing module 157 and time delay distribution calculation module 160 respectively, network information input module 150 is for inputting network topology structure, message length, packet sending speed, VLAN division and trigger relation information, network information output module 161 is for output network flow load and maximum delay distributed intelligence.
Composition graphs 1 and Fig. 3, in the present embodiment, use network essential information adaptive setting network performance index, result of adjusting and network analyzing apparatus Real-Time Monitoring content comparative analysis network state.As shown in table 5 is network performance monitoring content and analysis in network analyzing apparatus.
Table 5 network performance monitoring content and analysis
The substation communication network state on_line monitoring system that the present invention proposes and adjusting of Contents for Monitoring effectively can help operations staff's obtaining communication network state; for communication network protecting control provides initial data, effectively improve control ability and a reliability of communication network.Substation communication network state on_line monitoring system of the present invention adopts that Inspect and control is separated, distribution accumulate system and the centralized mode combined of adjusting, from message aspect and macroscopic flux two aspects, the intelligent substation communication network monitoring system of multi-angle is established to all kinds of message characteristic of IEC61850 and demand.The design concept combined that substation communication network state on_line monitoring system employing network service record in the present embodiment is combined with on-line analysis, distributed node message accounting controls and centralized flow is adjusted; UNE node flow and delay fault setting algorithm, establish and meet intelligent substation to communication network requirement and the substation communication network monitoring technique possessing online protecting control ability.
The invention still further relates to a kind of substation communication network state on_line monitoring method, its flow chart as shown in Figure 4.In Fig. 4, this substation communication network state on_line monitoring method comprises the steps:
Step S001 initialization substation communication network state online monitoring system: in this step, initialization substation communication network state online monitoring system.How to carry out initialization about in this step, rear extended meeting is described in detail.
Step S002 substation communication network state online monitoring system mirror image obtains network service message, resolve and network flow calculation and message delay: in this step, when network normally runs, substation communication network state online monitoring system mirror image obtains network service message, resolves and network flow calculation and message delay.
Step S003 is by real-time distributed for network Monitoring Data input state determinating area, message reasonability determination module judges whether the message inputted exists exception: in this step, by real-time distributed for network Monitoring Data input state determinating area, message reasonability determination module judges whether the message inputted exists exception, namely judge whether the message inputted exists the abnormal conditions such as message coding mistake or timing error, if the result judged is yes, then perform step S004; Otherwise, perform step S005.
Result of determination is input to network condition determination module by step S004: if the judged result of above-mentioned steps S003 is yes, then perform this step.In this step, result of determination is input to network condition determination module, executes this step, perform step S011.
Step S005 carries out equipment state judgement: if the judged result of above-mentioned steps S003 is no, then perform this step.In this step, carry out equipment state judgement.Execute this step, perform step S006.
Step S006 substation communication network state on_line monitoring system obtains target monitoring content with carrying out between monitored equipment communicating, and the content of target monitoring content and equipment state administration module is contrasted, judge whether to occur abnormal conditions: in this step, substation communication network state on_line monitoring system obtains target monitoring content with carrying out between monitored equipment communicating, and the content of target monitoring content and equipment state administration module is contrasted, judge whether to occur abnormal conditions, if the result judged is yes, then perform step S007; Otherwise, perform step S008.
Result of determination is input to network condition determination module by step S007: if the judged result of above-mentioned steps S006 is yes, then perform this step.In this step, result of determination is input to network condition determination module, executes this step, perform step S011.
Step S008 carries out network performance judgement: if the judged result of above-mentioned steps S006 is no, then perform this step.In this step, carry out network performance judgement.Execute this step, perform step S009.
Network traffics and message delay contrast with network performance setting value by step S009 respectively, judge whether to occur abnormal conditions: in this step, network traffics and message delay are contrasted with network performance setting value respectively, judge whether to occur abnormal conditions, namely actual measurement gained network node flow and time delay and network performance setting value are compared, determine whether to occur abnormal conditions, if the result judged is yes, then perform step S010; Otherwise, perform step S011.
Result of determination is input to protecting control module by step S010: if the judged result of above-mentioned steps S009 is yes, then perform this step.In this step, result of determination is input to protecting control module.Execute this step, perform step S011.
Step S011 judges whether the network topology of the original input in condition managing region and message physical message change: in this step, judge whether network topology and the message physical message of the original input in condition managing region change, if changed, then return step S001; Otherwise, return step S002.Owing to being Real-Time Monitoring, so it possesses on-line monitoring and instant protective capability, can meet intelligent substation for communication network reliability requirement.It is worth mentioning that, above-mentioned parsing content comprises message APPID, state StNum and sequence number SqNum.
For the present embodiment, above-mentioned steps S001 also can refinement further, and the flow chart after its refinement as shown in Figure 5.In Fig. 5, above-mentioned steps S001 comprises further:
Step S101 arranges substation communication network state on_line monitoring system in a communication network: in this step, arranges substation communication network state on_line monitoring system in a communication network.
Step S102 by resolving SCD file, the input of communication network physical message and network performance adjusted the information input of message status administration module, equipment state administration module and network performance management module: in this step, by resolving SCD file, the input of communication network physical message and network performance the information input of message status administration module 13, equipment state administration module 14 and network state administration module 15 in completion status management area 1 such as to adjust.
In a word; in the present embodiment; construct the substation communication network state on_line monitoring system of a kind of function division, state independence, information sharing; by monitoring the content of message status, equipment state and network performance; real time data monitoring, state information management, facility information are called and are combined by immediately; while reflecting network state more accurately, the initial data demand of different communication network protecting control function can be met.Its on-line monitoring and the instant mode controlled change the failure analysis methods that original monitoring record and off-line analysis combine, and efficiently solve recorded message waste and fault recovery and cross the shortcoming such as slowly.The communication network status on-line monitoring system that its basic function subregion is separated with condition managing can the function such as complete independently network real-time data acquisition, network status data calling, network state management, network state judgement.This substation communication network state on_line monitoring system and method meets the information requirement that communication network is adjusted to the real time data of fault verification and network protection and state; while the operation maintenance personnel work of a large amount of minimizing electrical secondary system, significantly improve substation communication network reliability and controllability.Resolve by carrying out monitoring to regulation Contents for Monitoring, and with the comparative analysis of corresponding state organize content, can carry out judging even in advance online to network operation situation or defect content, effectively can continue message dropping that unrecoverable failure brings and network paralysis problem by circumvent network.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a substation communication network state on_line monitoring system, it is characterized in that, comprise condition managing region, status monitoring region and condition judgement region, described condition managing region is by network traffics computational methods, the adaptive setting communication network traffic fault actions threshold values of study communication network physical structure information, to give out a contract for a project in conjunction with all kinds of messages of IEC61850 regulation rule and setting; Described status monitoring region and described condition managing joint area, in real time each for all switches port being exchanged message mirror extremely described substation communication network state on_line monitoring system, and Real-Time Monitoring is carried out to message, equipment and network performance, and the network implementation measurement of discharge obtained is input to described condition judgement region, simultaneously by resolving message and parsing content being sent to described condition judgement region; Described condition judgement region respectively with described condition managing region and status monitoring joint area, for carrying out preliminary fault verification according to described parsing content by the reasonability of monitoring message sequential and message coding and by described network implementation measurement of discharge and network traffics fault actions threshold values being contrasted, to carry out the location of network failure, control and recovery.
2. substation communication network state on_line monitoring system according to claim 1, is characterized in that, described parsing content comprises message APPID, state StNum and sequence number SqNum.
3. substation communication network state on_line monitoring system according to claim 2, it is characterized in that, described condition managing region comprises network physical MIM message input module, SCD file parsing module, message status administration module, equipment state administration module and network state administration module, described network physical MIM message input module is connected with information interactive bus, for learning communication network physical structure information, described SCD file parsing module is connected with described information interactive bus, for resolving SCD file, described message status administration module is connected with described information interactive bus, for managing message status, described equipment state administration module is connected with described information interactive bus, for managing equipment state, described network state administration module is connected with described information interactive bus, for managing network state.
4. substation communication network state on_line monitoring system according to claim 3, it is characterized in that, described status monitoring region comprises network message mirror module, flow delay statistical module and packet parsing module, described network message mirror module is used in real time each for all switches port being exchanged message mirror to described substation communication network state on_line monitoring system, described flow delay statistical module is connected with described network message mirror module and information interactive bus respectively, add up for the real-time flow to communication network device port and message delay, described packet parsing module is connected with described flow delay statistical module, for resolving message and parsing content being sent to described condition judgement region.
5. substation communication network state on_line monitoring system according to claim 4, is characterized in that, described condition judgement region comprises message reasonability determination module, equipment state determination module, network condition determination module and protecting control module; Described message reasonability determination module respectively with described packet parsing module and information interactive bus is connected, for according to described parsing content by monitoring message sequential and message coding carries out message reasonableness check; Described equipment state determination module is respectively with described message reasonability determination module with information interactive bus is connected, for judging the state of equipment; Described network condition determination module is connected with described information interactive bus, for judging network condition; Described protecting control module is respectively with described message reasonability determination module, network condition determination module with equipment state determination module is connected, for carrying out protecting control when communication network status is abnormal.
6. the substation communication network state on_line monitoring system according to claim 3 to 5 any one, is characterized in that, described network state administration module comprises network information input module, message rate analysis module, trigger relation analysis module, Network topology module, VLAN analysis module, message length analysis module, message distribution calculation module, flow load computing module, service curves computing module, arrival curve computing module, time delay distribution calculation module and network information output module, described network information input module and message distribution calculation module all with described message rate analysis module, trigger relation analysis module, Network topology module, VLAN analysis module is connected with message length analysis module, and described flow load computing module is connected with described message rate analysis module and message distribution calculation module respectively, described service curves computing module respectively with described message rate analysis module, message distribution calculation module is connected with message length analysis module, described arrival curve computing module is connected with described message distribution calculation module respectively, described time delay distribution calculation module is connected with described service curves computing module and arrival curve computing module respectively, and described network information output module is connected with described flow load computing module and time delay distribution calculation module respectively, described network information input module is for inputting network topology structure, message length, packet sending speed, VLAN division and trigger relation information, described network information output module is used for output network flow load and maximum delay distributed intelligence.
7. substation communication network state on_line monitoring system according to claim 6, it is characterized in that, described message comprises heartbeat GOOSE message, sampled value SV message and MMS message, and described MMS message comprises MMS Initial message, MMS runs message and MMS stops message; The Contents for Monitoring of described heartbeat GOOSE message comprises message integrality, message compliance, message transmitting time, test serial number and subscribing relationship; The Contents for Monitoring of described sampled value SV message comprises message integrality, message compliance, message transmission interval, test serial number and subscribing relationship; The Contents for Monitoring of described MMS Initial message comprises service content, response time delay and respond services; The Contents for Monitoring that described MMS runs message comprises message integrality, test serial number, data traffic, data parameters and message transmissions time delay; The Contents for Monitoring that described MMS stops message comprises termination message.
8. substation communication network state on_line monitoring system according to claim 1, it is characterized in that, described equipment comprises switch and IED equipment, and the status monitoring of described switch comprises address table monitoring, logical cyclic ring network monitoring, switch memory and supply voltage; The status monitoring of described IED equipment comprises Parallel Redundancy Protocol and clock synchronous message, and the monitoring of described network performance comprises flow distribution monitoring and time delay distribution monitoring.
9. a substation communication network state on_line monitoring method, is characterized in that, comprises the steps:
A) initialization substation communication network state online monitoring system;
B) described substation communication network state online monitoring system mirror image obtains network service message, resolves and network flow calculation and message delay;
C) by real-time distributed for network Monitoring Data input state determinating area, message reasonability determination module judges whether the message inputted exists exception, in this way, result of determination is input to network condition determination module, performs step F); Otherwise, carry out equipment state judgement, perform step D);
D) described substation communication network state on_line monitoring system obtains target monitoring content with carrying out between monitored equipment communicating, and the content of described target monitoring content and equipment state administration module is contrasted, judge whether to occur abnormal conditions, in this way, result of determination is input to network condition determination module, performs step F); Otherwise, carry out network performance judgement, perform step e);
E) described network traffics and message delay are contrasted with network performance setting value respectively, judge whether to occur abnormal conditions, in this way, result of determination is input to protecting control module, perform step F); Otherwise, perform step F);
F) judge whether network topology and the message physical message of the original input in condition managing region change, and in this way, return steps A); Otherwise, return step B).
10. substation communication network state on_line monitoring method according to claim 9, is characterized in that, described steps A) comprise further:
A1) described substation communication network state on_line monitoring system is arranged in a communication network;
A2) by resolving SCD file, communication network physical message input and network performance adjusted message status administration module, equipment state administration module and network state administration module information input.
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