CN104683168A - Process level network communication failure automatic positioning method for intelligent transformer substation - Google Patents

Abstract

The invention discloses a process level network communication failure automatic positioning method for an intelligent transformer substation. The method comprises the following steps that communication equipment is subjected to classification modeling; the communication connection relationship between the communication equipment is scanned through an SCD, and a process level communication topology structure is formed; on the basis of the process level communication topology structure, the network topology scanning is carried out according to communication link abnormal information sent by a communication equipment receiving side, and the reasons and the links of the positioning communication link abnormal information are accurately positioned. The failure automatic positioning method has the advantages that the fast failure point positioning under the process level network communication failure condition of the intelligent transformer substation can be realized, the method is simple, reliable and efficient, the failure processing efficiency of a secondary loop can be improved, and the reliable operation of the secondary loop of the intelligent transformer substation is guaranteed.

Description

A kind of transformer station process layer network communication failure automatic positioning method

Technical field

The invention belongs to the operation maintenance field of secondary equipment of intelligent converting station, particularly a kind of automatic positioning method of transformer station process layer network device communication failure problem.

Background technology

The basis of intelligent substation is the digital transformer substation built based on IEC61850, is the latest requirement to transformer station's Form of Technique under intelligent grid environment.The signal of telecommunication that the information transmission mode of intelligent substation is transmitted by conventional substation inner cable changes the digital signal of Optical Fiber Transmission into, achieves the transformer station secondary system distributed function such as the locking of monitoring connection, protection sampling, breaker tripping and closing, startup, locking in digitized mode.

The secondary circuit of intelligent substation is no longer the pure circuit structure formed with cable transmission single signal, but the network structure based on optic fiber beam sensor, transmit multiple signals in each root optical fiber simultaneously, cannot from outside, direct physical connection go to analyze whole loop again, be instead then secondary virtual circuit.How monitoring secondary circuit, when breaking down in loop, how rapidly fault point is the problem needing solution in intelligent substation process of construction badly.

Summary of the invention

Object of the present invention, be to provide a kind of transformer station process layer network communication failure automatic positioning method, it can realize the fault point quick position under transformer station process layer network communication failure condition, method is effectively simple and reliable, secondary circuit failure treatment effeciency can be improved, ensure the reliability service in intelligent substation secondary loop.

In order to reach above-mentioned purpose, solution of the present invention is:

A kind of transformer station process layer network communication failure automatic positioning method, comprises the steps:

(1) classification model construction is carried out to communication equipment;

(2) the communication connection contact between communication equipment is scanned by SCD, forming process layer Communication topology;

(3) on the basis of process layer Communication topology, according to the communication link abnormal information that communication equipment receiver side sends, network topology scanning is carried out, exactly the reason of positioning and communicating link exception and link.

The detailed content of above-mentioned steps (1) is:

(11) equipment related in communication process comprises five aspects: protective device, intelligent terminal, merge cells, optical fiber switch and optical fiber, by abstract for optical fiber be optical fiber link model, description form is [PORT1, PORT2], wherein, PORT1, PORT2 represent two ports of optical fiber respectively; All the other equipment are all abstracted into information processing, forward generic port model, description form is [device numbering, board plug-in unit is numbered, optical fiber communication port numbering];

(12) all for process layer physical ports and optical fiber link are all carried out modeling according to the model in step (11), background computer again according to process layer full model, the model of process of establishing layer and topology information.

The detailed content of above-mentioned steps (2) is: by GOOSE and SV message interaction application message between process layer devices, application message INFORMATION [multicast address, application identities] carry out unique identification, interactive relation is described in detail in SCD file, according to the Inputs information of reading and the APPID information of sender, tectonic information transmission and reception connection relational table.

The detailed content of above-mentioned steps (3) is:

(31) alarm event of GOOSE chain rupture and SV chain rupture is obtained;

(32) resolve alarm event, find the information INFORMATION belonging to event, source port PORT and target port PORT;

(33) according to process physical link model, utilize the searching algorithm of tree, set up the topological path of source port to destination interface, record the port PO RT on path;

(34) other chain rupture alarm event of circular treatment, structure topological path, record transmission unit, until warning information table be sky;

(35) add up the number of times that all path port occur, what number of times was maximum break down, and probability is the highest;

(36) port the highest for occurrence number is grouped into set PORTS;

(37) if only there is an element PORT in PORTS, then PORT is exactly fault point;

If PORTS==SLOT_PORTS, then plate fault, wherein, the set of SLOT_PORTS indication device plate port;

If PORTS==DEVICE_PORTS, then plant failure, wherein, the set of DEVICE_PORTS indication device port;

If PORTS has two port PO RT1 and PORT2, the two forms a LINKER, then this LINKER fault;

If the end points of PORTS is switch, then specifically located which optical fiber network interface fault or exchange fault of switch again by snmp protocol.

After adopting such scheme, the present invention analyzes transmission and the receiver relation of process layer information by SCD file, and the transmission path of information is hunted out in conjunction with topological structure, abstract, modeling is carried out to communication units such as the switch in secondary circuit, device, links, and build the topological structure of communication network, in conjunction with the chain rupture warning information of receiving system, comprehensive diagnos determines trouble unit, holistic approach is effectively simple and reliable, quick position communication failure point will be contributed to, ensure the reliability service in intelligent substation secondary loop.

Accompanying drawing explanation

Fig. 1 of the present inventionly realizes schematic diagram;

Fig. 2 is the equivalent schematic of transformer station process layer communication pattern;

Fig. 3 is a kind of network structure of equipment connecting relation.

Embodiment

Below with reference to accompanying drawing, technical scheme of the present invention is described in detail.

The invention provides a kind of transformer station process layer network communication failure automatic positioning method, comprise the steps:

(1) classification model construction is carried out to communication equipment

Transformer station process layer has two kinds of communication patterns: communicated by fiber optic Ethernet switchboard unit network; By the point-to-point communication of fiber direct connection.Two kinds of patterns can be equivalent to the form shown in Fig. 2.

The equipment related in communication process comprises five aspects: protective device, intelligent terminal, merge cells, optical fiber switch and optical fiber.Except optical fiber is simple information transmission equipment, other is all process or the forwarding unit of information, they can be abstracted into two class models: information processing, forwarding generic port model (PORT) and optical fiber link model (LINKER), wherein, the description form of information processing, forwarding generic port model (PORT) is: [device numbering (device_no), board plug-in unit numbering (slot_no), optical fiber communication port numbering (fiber_no)]; Be UNICOM between port due to switch, switch total abstract can be become a port; Optical fiber two ends are connected to port, and therefore optical fiber link model (LINKER) has with drag: [port one (PORT1), port 2 (PORT2)].

All for process layer physical ports and optical fiber link are all carried out modeling according to model above, background computer again according to process layer full model, the model of process of establishing layer and topology information.

(2) forming process layer Communication topology

The annexation of equipment can be divided into two types:

1) equipment and equipment are connect in succession by inter-exchange, as shown in Figure 3;

2) equipment is directly connected with equipment.

According to modeling principle, the model of Fig. 3 is as follows:

Port one: PORT1 (1,1,1)

Port 2:PORT2 (2,1,1)

Port 2:PORT3 (3,1,1)

Switch 1:PORT4 (4,1,1)

Switch 2:PORT5 (5,1,1)

Cascaded switches: PORT6 (6,1,1)

Optical fiber link 1:LINKER1 (PORT1, PORT4)

Optical fiber link 2:LINKER2 (PORT2, PORT6)

Optical fiber link 3:LINKER3 (PORT3, PORT5)

Optical fiber link 4:LINKER4 (PORT4, PORT6)

Optical fiber link 5:LINKER4 (PORT5, PORT6)

Mode 2) relationship model relatively simple, only relate to two end points link, be not described in detail in this.

Numeral in model is only example, and during specific implementation, the real figure of device replaces.

In a computer, can represent above-mentioned model by the data structure of tree, terminal equipment (protection, intelligent terminal, merge cells etc.) is the leaf in tree, and switch is the intermediate node of tree.As shown in Figure 3, the path between every two end points is determined.Such as, between end points 1 and end points 3, the path of communication is LINKER1-LINKER4-LINKER5-LINKER3, and the port related to is PORT1-PORT4-PORT6-PORT5-PORT3.

By GOOSE, SV message interaction application message between process layer devices.Application message can use INFORMATION [multicast address (MAC_ADDRESS), application identities (APPID)] to carry out unique identification, and interactive relation is described in detail in SCD file, defines following information in SCD file:

1. the data set DataSet that transmitting terminal GOOSE, SV report-control block, and report-control block is corresponding;

2. the Inputs(equipment of receiving terminal is for receiving the information contact of external input signal) be associated with the data details of transmitting terminal;

3. multicast address (MAC_ADDRESS) corresponding when GOOSE, SV send, the information such as application identities (APPID).

By above-mentioned three groups of information, can the transceiver of building process layer information and logical communications links.Building process is as follows:

1) SCD file is imported;

2) read the GSE(transformer station general purpose event of whole device), SMV(sampled measurement), data set and FCDA(functional restraint data attribute), and build the incidence relation of FCDA and GSE, SMV;

3) retrieval GOIN, SVIN is the Inputs information in the LN of prefix;

4) data set corresponding to correlation signal and GSE, SMV controll block is retrieved;

5) network configuration information corresponding to GSE, SMV control card is retrieved.

According to the Inputs information of reading and the APPID information of sender, tectonic information transmission and reception connection relational table.As shown in table 1.

Table 1

Multicast MAC

APPID

Sender PORT

Recipient PORT

(3) comprehensive diagnos

Process layer GOOSE, SV receiving device can send after not receiving effective GOOSE, SV information within a certain period of time " xxx equipment GOOSE chain rupture ", " xxx equipment SV chain rupture " and etc. alarm.Therefore the function for monitoring of secondary circuit completes recipient, when the link that communicates is abnormal, recipient cannot normal receive data, thus judge that secondary circuit there occurs exception, but recipient cannot judge that problem has appearred in which link of secondary circuit, namely cannot navigate to transmit leg optical fiber interface, optical fiber link, switch or recipient's optical fiber interface and there occurs exception.But which link the warning information of the link exception at comprehensive full station and process layer Communication topology, then accurately can orient and occur fault.

For the communication abnormality that the plant failures such as protection, intelligent terminal cause, there are following three kinds of possibilities:

1, plant failure: when such as installation's power source occurs abnormal, all communication externally of device all will occur abnormal.

2, plate fault: when the plate that communicates occurs abnormal, on this plate, all optical networking port communications all can occur exception.

3, optical fiber network interface fault: when single optical fiber network interface occurs abnormal, communication all on this optical fiber interface occurs abnormal.

For the communication abnormality that exchange fault causes, in algorithm model herein, switch entirety is invented a port, all exception can occur through all loops of this switch exchange message.

Optical fiber link fault: the loop that this link of all processes sends information all exception can occur.

Through above-mentioned information modeling, following set can be summarized.These set will contribute to fault point exactly.

1. device plate sets of ports closes (SLOT_PORTS)

Port set PORT1, PORT2 ..., PORTN}

2. device port set (DEVICE_PORTS)

Port set PORT1, PORT2 ..., PORTN}

Fault diagnosis algorithm:

1) alarm event of GOOSE chain rupture, SV chain rupture is obtained;

2) resolve alarm event, find the information INFORMATION belonging to event, source port PORT (source), target port PORT (dest);

3) according to process physical link model, utilize the searching algorithm of tree, set up the topological path of source port to destination interface, record the port PO RT on path;

4) other chain rupture alarm event of circular treatment, structure topological path, record transmission unit, until warning information table be sky;

5) add up the number of times that all path port occur, what number of times was maximum break down, and probability is the highest;

6) port the highest for occurrence number is grouped into set PORTS;

7) if only there is an element PORT in PORTS, then PORT is exactly fault point;

If PORTS==SLOT_PORTS, plate fault;

If PORTS==DEVICE_PORTS, plant failure;

If PORTS has two port PO RT1, PORT2 to form a LINKER, then this LINKER fault;

If the end points of PORTS is switch, then also need which optical fiber network interface fault or the exchange fault of specifically being located switch by snmp protocol.

To sum up, coordinate shown in Fig. 1, that a typical transformer station process layer network communication failure locates schematic diagram automatically, process layer devices can not direct access station control layer network, need to be sent to station level network by the chain rupture information of bay device (measure and control device) repeating process layer network communication, bay device is by process itself layer network, secondary circuit on-line monitoring system gathers the communication disconnection abnormal information of all process-level network communication equipments, and combined with intelligent Substation process-level topology of networks, the concrete link of final position fixing process layer network communication abnormality.

Above embodiment is only and technological thought of the present invention is described, can not limit protection scope of the present invention with this, and every technological thought proposed according to the present invention, any change that technical scheme basis is done, all falls within scope.

Claims (4)

1. a transformer station process layer network communication failure automatic positioning method, is characterized in that comprising the steps:

(1) classification model construction is carried out to communication equipment;

(2) the communication connection contact between communication equipment is scanned by SCD, forming process layer Communication topology;

(3) on the basis of process layer Communication topology, according to the communication link abnormal information that communication equipment receiver side sends, network topology scanning is carried out, exactly the reason of positioning and communicating link exception and link.

2. a kind of transformer station process layer network communication failure automatic positioning method as claimed in claim 1, is characterized in that the detailed content of described step (1) is:

(11) equipment related in communication process comprises five aspects: protective device, intelligent terminal, merge cells, optical fiber switch and optical fiber, by abstract for optical fiber be optical fiber link model, description form is [PORT1, PORT2], wherein, PORT1, PORT2 represent two ports of optical fiber respectively; All the other equipment are all abstracted into information processing, forward generic port model, description form is [device numbering, board plug-in unit is numbered, optical fiber communication port numbering];

(12) all for process layer physical ports and optical fiber link are all carried out modeling according to the model in step (11), background computer again according to process layer full model, the model of process of establishing layer and topology information.

3. a kind of transformer station process layer network communication failure automatic positioning method as claimed in claim 1, it is characterized in that the detailed content of described step (2) is: by GOOSE and SV message interaction application message between process layer devices, application message INFORMATION [multicast address, application identities] carry out unique identification, interactive relation is described in detail in SCD file, according to the Inputs information of reading and the APPID information of sender, tectonic information transmission and reception connection relational table.

4. a kind of transformer station process layer network communication failure automatic positioning method as claimed in claim 3, is characterized in that the detailed content of described step (3) is:

(31) alarm event of GOOSE chain rupture and SV chain rupture is obtained;

(32) resolve alarm event, find the information INFORMATION belonging to event, source port PORT and target port PORT;

(33) according to process physical link model, utilize the searching algorithm of tree, set up the topological path of source port to destination interface, record the port PO RT on path;

(34) other chain rupture alarm event of circular treatment, structure topological path, record transmission unit, until warning information table be sky;

(35) add up the number of times that all path port occur, what number of times was maximum break down, and probability is the highest;

(36) port the highest for occurrence number is grouped into set PORTS;

(37) if only there is an element PORT in PORTS, then PORT is exactly fault point;

If PORTS==SLOT_PORTS, then plate fault, wherein, the set of SLOT_PORTS indication device plate port;

If PORTS==DEVICE_PORTS, then plant failure, wherein, the set of DEVICE_PORTS indication device port;

If PORTS has two port PO RT1 and PORT2, the two forms a LINKER, then this LINKER fault;

If the end points of PORTS is switch, then specifically located which optical fiber network interface fault or exchange fault of switch again by snmp protocol.