CN112073326A - Intelligent substation process layer network data flow control method - Google Patents
Intelligent substation process layer network data flow control method Download PDFInfo
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- CN112073326A CN112073326A CN202010750098.8A CN202010750098A CN112073326A CN 112073326 A CN112073326 A CN 112073326A CN 202010750098 A CN202010750098 A CN 202010750098A CN 112073326 A CN112073326 A CN 112073326A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00028—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment involving the use of Internet protocols
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/26—Special purpose or proprietary protocols or architectures
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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Abstract
The invention relates to a method for controlling data flow of a process level network of an intelligent substation, which is characterized by establishing a data flow control template file based on an IEC61850 communication protocol, wherein the data flow control template file comprises a device attribute, a port attribute, an IED (intelligent electronic device) list attribute of a real intelligent electronic device, an IED list attribute of a virtual intelligent electronic device and a data flow control list attribute; generating a project instance file; and importing the engineering example file into a data flow control device, reading a data flow control list to establish a network flow control logic of the data flow control device, and realizing the control of the data flow. The invention can realize three-layer data flow control of a sampling value SV protocol and a general object-oriented substation event GOOSE protocol only by configuring the electric power protocol identifier APPID, realize unified modeling and management of electric power communication services, reduce the management difficulty, reduce the technical requirements of configuration personnel and improve the working efficiency.
Description
Technical Field
The invention relates to the technical field of network communication, in particular to a method for controlling process level network data flow of an intelligent substation.
Background
The current intelligent substation process layer network has two three-layer protocols of SV and GOOSE based on 61850, a standard two-layer Ethernet switch is used for networking at the present stage, the flow direction control of network data flow is realized by a VLAN technology, VLAN configuration information irrelevant to electric power service needs to be additionally introduced by using the technology, the information is not convenient to be brought into a 61850 model system, and the management difficulty is increased; the VLAN technology cannot accurately limit illegal data streams, and at this time, the source MAC address of a data stream needs to be bound through a switch port, which also needs to be configured additionally and independently of power services; meanwhile, the two-layer switch does not have the identification capability of the three-layer protocol, when illegal access equipment occurs and fault flow of the access equipment is abnormal, accurate flow statistics and control oriented to protocol and logic equipment data flow cannot be achieved, and even if the existing three-layer switch is used, the flow control of the IP protocol can only be identified.
In each IED in the SCD file, a list of SVs and GOOSE that it can output (publish) is already recorded, and a list of SVs and GOOSE that it inputs (subscribe) is also recorded.
Therefore, there is a need in the art for a three-layer data flow control method that can implement data flow control by configuring IP addresses similarly, so as to implement unified modeling and management of power communication services.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the method for controlling the process level network data flow of the intelligent substation, which can realize the three-layer data flow control of the data flow control only by configuring the power protocol address, realize the unified modeling and management of the power communication service, reduce the management difficulty, reduce the technical requirements of configuration personnel and improve the working efficiency.
In order to achieve the purpose, the invention provides a method for controlling process level network data flow of an intelligent substation, which comprises the following steps:
establishing a data flow control template file based on an IEC61850 communication protocol, wherein the data flow control template file comprises a device attribute, a port attribute, a real intelligent electronic device IED list attribute, a virtual intelligent electronic device IED list attribute and a data flow control list attribute of a data flow control device;
filling in the device attribute and the port attribute through a configuration tool; extracting information from a full-station system configuration file SCD of an intelligent substation to fill the IED list of the real intelligent electronic equipment, the IED list of the virtual intelligent electronic equipment and the data flow control list; generating a project instance file;
and importing the engineering example file into a data flow control device, reading a data flow control list to establish a network flow control logic of the data flow control device, and realizing the control of the data flow.
Further, the data flow control template file includes:
the device attributes include: an intelligent electronic device IED name of the flow control device; an SV flow threshold; GOOSE traffic threshold;
the port attributes include: port number, port type and IED name; the port types comprise two types of equipment and cascade connection;
the real intelligent electronic device IED list attribute comprises: each real intelligent electronic device IED name, all input and output SVs contained in the IED name and a GOOSE address list;
the virtual intelligent electronic device IED list attribute comprises: each virtual intelligent electronic device IED name, all input and output SVs contained in the IED name, and a GOOSE address list;
the data flow control manifest attributes include: SV data stream manifest attribute and GOOSE data stream manifest attribute; the SV data stream manifest attributes include: an SV data stream attribute; the SV data stream attributes include: application identifier APPID, source port, state, frame rate, traffic, destination port number list; the GOOSE data stream manifest attribute includes: GOOSE data stream attributes; the GOOSE data stream attribute includes: application identifier APPID, source port, status, frame rate, traffic, destination port number list.
Further, generating the project instance file includes:
a) the IED name, the port number 1-n and the port attribute of the data flow control device are manually input by using an IEC61850 configuration tool, and the method comprises the following steps: port number and port type;
b) reading all intelligent electronic equipment IED names and SV and GOOSE attribute information attached to the intelligent electronic equipment IED names from an intelligent substation total station system configuration file SCD, wherein the SV and GOOSE attribute information comprises an SV input address list, a GOOSE input address list, an SV output address list and a GOOSE output address list, and generating a real intelligent electronic equipment IED list;
c) manually and sequentially binding intelligent electronic equipment IED which needs to be interacted through a data flow control device with a port corresponding to the flow control device; storing the IED name to the IED name in the port attribute;
d) sequentially extracting application identifiers APPID in SV output address lists of IEDs bound to ports of each data flow control device, traversing SV input address lists of all IEDs bound to the data flow control devices, searching whether the application identifiers APPID exist in SV data flow lists of the data flow control lists if the application identifiers APPID match, adding and recording the application identifiers APPID if the application identifiers APPID do not exist, and recording the current port number as a source port and adding the port number bound to the matched IED to a destination port number list; if yes, adding the port number bound by the matched IED to a destination port number list;
e) sequentially extracting application identifiers APPID in a GOOSE output address list of IEDs bound to a port of a data flow control device, traversing GOOSE input address lists of all the IEDs bound to the data flow control device, searching whether the application identifiers APPID exist in the GOOSE data flow list of the data flow control list if the application identifiers APPID match with the GOOSE output address list of all the IEDs bound to the port of the data flow control device, adding and recording the application identifiers APPID if the application identifiers APPID do not exist in the GOOSE data flow list of the data flow control list, and recording the current port number; if yes, adding the matched port number to the destination port number list;
f) if the intelligent electronic device IED connected with the two data flow control devices needs to perform data flow interaction, executing the step g); otherwise, ending;
g) the data flow control device A, B establishes virtual intelligent electronic devices VIEDa and VIEDb respectively, and designates ports An and Bn for cascade connection respectively; the virtual intelligent electronic equipment VIEDa and VIEDb manually write in the name of the virtual intelligent electronic equipment IED; respectively collecting SV input address list SV _ IN, SV output address list SV _ OUT, GOOSE input address list GOOSE _ IN, and GOOSE output address list GOOSE _ OUT of all the bound IEDs of the data flow control device A, B;
h) sequentially extracting application identifiers APPID IN an SV output address list SV _ OUT _ A of the data flow control device A, traversing an SV input address list SV _ IN _ B of the data flow control device B, respectively searching whether the application identifiers APPID exist IN the SV input address list of the virtual intelligent electronic equipment VIEDa and the SV output address list of the virtual intelligent electronic equipment VIEDb if the application identifiers APPID are matched, and adding the application identifiers APPID if the application identifiers APPID do not exist; sequentially extracting application identifiers APPID from a GOOSE output address list GOOSE _ OUT _ A of the data flow control device A, traversing a GOOSE input address list GOOSE _ IN _ B of the data flow control device B, respectively searching whether the application identifiers APPID exist IN the GOOSE input address list of the VIEDa of the virtual intelligent electronic equipment and the GOOSE output address list of the VIEDb of the virtual intelligent electronic equipment if the application identifiers APPID exist IN the GOOSE output address list of the VIEDa of the virtual intelligent electronic equipment, and adding the application identifiers APPID if the application identifiers APPID do not exist IN the GOOSE;
i) sequentially extracting application identifiers APPID in an SV output address list SV _ OUT _ B of a data flow control device B, traversing an SV input address list SV _ OUT _ A of the data flow control device A, respectively searching whether the application identifiers APPID exist in the SV input address list of virtual intelligent electronic equipment VIEDb and the SV output address list of virtual intelligent electronic equipment VIEDa if the application identifiers APPID match, and adding the application identifiers APPID if the application identifiers APPID do not exist; sequentially extracting application identifiers APPID from a GOOSE output address list GOOSE _ OUT _ B of a data flow control device B, traversing a GOOSE input address list GOOSE _ IN _ A of a data flow control device A, respectively searching whether the application identifiers APPID exist IN the GOOSE input address list of the VIEDb of the virtual intelligent electronic equipment and the GOOSE output address list of the VIEDa of the virtual intelligent electronic equipment if the application identifiers APPID exist IN the GOOSE input address list of the VIEDb of the virtual intelligent electronic equipment, and adding the application identifiers APPID if the application identifiers APPID do not exist IN the GOOSE;
j) sequentially extracting application identifiers APPID in SV output address lists of IEDs bound by spare ports of each data flow control device, traversing SV input address lists of IEDs bound by all cascading ports of the data flow control device, searching whether the application identifiers APPID exist in SV data flow lists of the data flow control lists if the application identifiers APPID match, adding and recording the application identifiers APPID if the application identifiers APPID do not exist, and recording the current port number as a source port and adding the port number bound by the matched IED to a destination port number list; if yes, adding the port number bound by the matched IED to a destination port number list;
sequentially extracting application identifiers APPID from a GOOSE output address list of IEDs bound by spare ports of the data flow control device, traversing GOOSE input address lists of all cascaded IEDs bound by the spare ports of the data flow control device, searching whether the application identifiers APPID exist in the GOOSE data flow list of the data flow control list if the application identifiers APPID match with the GOOSE output address list, adding and recording the application identifiers APPID if the application identifiers APPID do not exist in the GOOSE data flow list of the data flow control list, and recording the current port number as a source port and adding the matched port number to a destination port number list; if so, adding the matching port number to the destination port number list.
Further, reading the data flow control list to establish the network flow control logic of the data flow control device specifically includes:
31) judging an illegal protocol: analyzing the protocol type of the message, and discarding if the protocol type is not SV or GOOSE; if so, go to step 32);
32) judging illegal data stream: analyzing application identifiers APPID of SV and GOOSE messages, judging whether the application identifiers APPID of SV and GOOSE are in an SV and GOOSE output address list of the IED bound with the current port, and discarding the messages if the application identifiers APPID of SV and GOOSE are not in the SV and GOOSE output address list; judging whether the data flow is in a data flow control list of the data flow control device, if not, discarding, and if so, entering step 33);
33) and extracting a destination port list in SV and GOOSE data stream list attributes from the data stream control list, and copying the messages one by one to a related destination port sending buffer zone.
Further, generating the project instance file includes: counting the frame number and the flow of the SV and the GOOSE once per second and filling the frame number and the flow to the data flow control list attribute; if the frame rate and the flow of a certain SV and GOOSE are greater than the flow threshold value in the device attribute, carrying out flow limitation and alarming; and counting the time when the data stream is not received, considering that the data stream is disconnected if SV and GOOSE messages are not received within the set time, and filling the data stream to the state of the attribute of the data stream control list.
The technical scheme of the invention has the following beneficial technical effects: the invention provides a method for controlling process level network data flow of an intelligent substation, which can realize three-layer data flow control of data flow control only by configuring a power protocol address, realize unified modeling and management of power communication services, reduce management difficulty, reduce technical requirements of configuration personnel and improve working efficiency.
Drawings
FIG. 1 is a schematic diagram of a process level network data flow control principle of an intelligent substation;
fig. 2 is a schematic diagram of a process level network data flow control process of an intelligent substation.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
The invention relates to a method for controlling process level network data flow of an intelligent substation, which is combined with a graph 1-2 and comprises the following steps:
(1) establishing a network flow control template file based on IEC61850 standard, wherein the network flow control template file indicates a device attribute, a port attribute, a real intelligent electronic equipment IED list attribute, a virtual intelligent electronic equipment IED list attribute and a data flow control list attribute of a data flow control device;
the device attributes are:
a) IED name of the device;
b) SV is fixed;
c) GOOSE fixed value;
the port attributes are:
d) port numbering: 1-maximum number of ports of the device
e) Port type: the device port and the cascade port are two types;
f) port medium: electrical and optical;
g) port rate: 100M, 1G and 10G;
a list of real IEDs, each IED having attributes:
h) an IED name;
i) a connection port number;
j) list of SV, GOOSE addresses of all inputs and outputs included in the IED;
cascading a list of virtual IEDs, wherein the attributes of each virtual IED are as follows:
k) IED name
l) connection port number
m) list of SV, GOOSE addresses of all inputs and outputs contained in the IED;
a data flow control manifest, the attributes of which are:
n) SV data streams having attributes of
APPID, the source port, the enable, the state, the frame rate, the flow and the destination port number list of the address flow direction;
o) GOOSE data stream
APPID, the source port, the enable, the state, the frame rate, the flow and the destination port number list of the address flow direction;
(2) generating an actual project configuration file by the network flow control model template file and an intelligent substation total station system configuration file SCD to extract information, setting a data flow control device, filling the network flow control model template file, and generating the actual project configuration file comprises the following steps: the intelligent electronic equipment comprises a real intelligent electronic equipment IED list, a virtual intelligent electronic equipment IED list and a data flow control list;
generating the project instance file comprises:
a) the IED name, the port number 1-n and the port attribute of the data flow control device are manually input by using an IEC61850 configuration tool, and the method comprises the following steps: port number and port type;
b) reading all intelligent electronic equipment IED names and SV and GOOSE attribute information attached to the intelligent electronic equipment IED names from an intelligent substation total station system configuration file SCD, wherein the SV and GOOSE attribute information comprises an SV input address list, a GOOSE input address list, an SV output address list and a GOOSE output address list, and generating a real intelligent electronic equipment IED list;
c) manually and sequentially binding intelligent electronic equipment IED which needs to be interacted through a data flow control device with a port corresponding to the flow control device; storing the IED name to the IED name in the port attribute;
d) sequentially extracting application identifiers APPID in SV output address lists of IEDs bound to ports of each data flow control device, traversing SV input address lists of all IEDs bound to the data flow control devices, searching whether the application identifiers APPID exist in SV data flow lists of the data flow control lists if the application identifiers APPID match, adding and recording the application identifiers APPID if the application identifiers APPID do not exist, and recording the current port number as a source port and adding the port number bound to the matched IED to a destination port number list; if yes, adding the port number bound by the matched IED to a destination port number list;
e) sequentially extracting application identifiers APPID in a GOOSE output address list of IEDs bound to a port of a data flow control device, traversing GOOSE input address lists of all the IEDs bound to the data flow control device, searching whether the application identifiers APPID exist in the GOOSE data flow list of the data flow control list if the application identifiers APPID match with the GOOSE output address list of all the IEDs bound to the port of the data flow control device, adding and recording the application identifiers APPID if the application identifiers APPID do not exist in the GOOSE data flow list of the data flow control list, and recording the current port number; if yes, adding the matched port number to the destination port number list;
f) if the intelligent electronic device IED connected with the two data flow control devices needs to perform data flow interaction, executing the step g); otherwise, ending;
g) the data flow control device A, B establishes virtual intelligent electronic devices VIEDa and VIEDb respectively, and designates ports An and Bn for cascade connection respectively; the virtual intelligent electronic equipment VIEDa and VIEDb manually write in the name of the virtual intelligent electronic equipment IED; respectively collecting SV input address list SV _ IN, SV output address list SV _ OUT, GOOSE input address list GOOSE _ IN, and GOOSE output address list GOOSE _ OUT of all the bound IEDs of the data flow control device A, B;
h) sequentially extracting application identifiers APPID IN an SV output address list SV _ OUT _ A of the data flow control device A, traversing an SV input address list SV _ IN _ B of the data flow control device B, respectively searching whether the application identifiers APPID exist IN the SV input address list of the virtual intelligent electronic equipment VIEDa and the SV output address list of the virtual intelligent electronic equipment VIEDb if the application identifiers APPID are matched, and adding the application identifiers APPID if the application identifiers APPID do not exist; sequentially extracting application identifiers APPID from a GOOSE output address list GOOSE _ OUT _ A of the data flow control device A, traversing a GOOSE input address list GOOSE _ IN _ B of the data flow control device B, respectively searching whether the application identifiers APPID exist IN the GOOSE input address list of the VIEDa of the virtual intelligent electronic equipment and the GOOSE output address list of the VIEDb of the virtual intelligent electronic equipment if the application identifiers APPID exist IN the GOOSE output address list of the VIEDa of the virtual intelligent electronic equipment, and adding the application identifiers APPID if the application identifiers APPID do not exist IN the GOOSE;
i) sequentially extracting application identifiers APPID in an SV output address list SV _ OUT _ B of a data flow control device B, traversing an SV input address list SV _ OUT _ A of the data flow control device A, respectively searching whether the application identifiers APPID exist in the SV input address list of virtual intelligent electronic equipment VIEDb and the SV output address list of virtual intelligent electronic equipment VIEDa if the application identifiers APPID match, and adding the application identifiers APPID if the application identifiers APPID do not exist; sequentially extracting application identifiers APPID from a GOOSE output address list GOOSE _ OUT _ B of a data flow control device B, traversing a GOOSE input address list GOOSE _ IN _ A of a data flow control device A, respectively searching whether the application identifiers APPID exist IN the GOOSE input address list of the VIEDb of the virtual intelligent electronic equipment and the GOOSE output address list of the VIEDa of the virtual intelligent electronic equipment if the application identifiers APPID exist IN the GOOSE input address list of the VIEDb of the virtual intelligent electronic equipment, and adding the application identifiers APPID if the application identifiers APPID do not exist IN the GOOSE;
j) referring to step d), e) add data flow between real IED and virtual IED to SV, GOOSE data flow control list. The method specifically comprises the following steps:
sequentially extracting application identifiers APPID in an SV output address list of IEDs bound by spare ports of each data flow control device, traversing all SV input address lists of IEDs bound with cascade ports of the data flow control device, searching whether the application identifiers APPID exist in the SV data flow list of the data flow control list if the application identifiers APPID match, adding and recording the application identifiers APPID if the application identifiers APPID do not exist, and recording the current port number as the port number bound by the IED matched with a source port and adding the port number to a destination port number list; if yes, adding the port number bound by the matched IED to a destination port number list;
sequentially extracting application identifiers APPID from a GOOSE output address list of IEDs bound by spare ports of the data flow control device, traversing GOOSE input address lists of all cascaded IEDs bound by the spare ports of the data flow control device, searching whether the application identifiers APPID exist in the GOOSE data flow list of the data flow control list if the application identifiers APPID match with the GOOSE output address list, adding and recording the application identifiers APPID if the application identifiers APPID do not exist in the GOOSE data flow list of the data flow control list, and recording the current port number as a source port and adding the matched port number to a destination port number list; if so, adding the matching port number to the destination port number list.
(3) The data flow control device imports the output engineering example file, establishes the network flow control logic of the device by reading the data flow control list, and realizes the control of the data flow, and the steps are as follows:
31. judging an illegal protocol: the protocol type of the message is analyzed, and if the protocol type is not 0X88BA/0X88B8, the message is discarded;
32. judging illegal data stream: resolving SV and GOOSE addresses, judging whether the addresses are in a data flow control list or not, and discarding if not; judging whether the current port number is consistent with the port in the list, and discarding the address list if the current port number is not consistent with the port in the list;
33. normal data flow control:
judging the enabling identification of the data stream, and discarding the data stream if the enabling identification is not enabled; and extracting a destination port list output by the SV and GOOSE addresses, and copying the messages one by one to a related port sending buffer area.
Further, generating the project instance file includes: carrying out accurate flow control, counting the frame number and the flow of the SV and the GOOSE once per second, and filling the frame number and the flow to the frame rate and the flow of the data flow control list attribute; if the frame rate and the flow of a certain SV and GOOSE are greater than the flow threshold value in the device attribute, carrying out flow limitation and alarming; and counting the time when the data stream is not received, considering that the data stream is disconnected if SV and GOOSE messages are not received within the set time, and filling the state items of the attribute of the data stream control list.
In summary, the present invention relates to a method for controlling data flow of a process level network of an intelligent substation, and the method includes a data flow control template file, a method for generating a project instance file, and a method for controlling data flow based on the project instance file. A data flow control template file describing a model of data flow control, comprising: the device attribute, the port attribute, a real intelligent electronic device IED list, a virtual intelligent electronic device IED list and a data flow control list; extracting attribute information of an intelligent electronic device IED, an attached sampling value SV protocol of the intelligent electronic device IED and a generic object-oriented substation event GOOSE protocol from an SCD (substation configuration description) of an intelligent substation total station system, selecting sampling value SV protocol nodes required to pass through a data flow control device and generic object-oriented substation event GOOSE protocol nodes, establishing a mapping list of a node application identifier (APPID) and a device port, storing the mapping list to an engineering instance file, importing the actual engineering instance file into the data flow control device, reading the mapping relation between the application identifier (APPID) and the device port in the data flow control list, establishing a network flow control logic of the data flow control device, and finally realizing accurate control of the direction and the flow of the data flow by identifying a message protocol and flow statistics. The invention can realize three-layer data flow control of a sampling value SV protocol and a general object-oriented substation event GOOSE protocol only by configuring the electric power protocol identifier APPID, realize unified modeling and management of electric power communication services, reduce the management difficulty, reduce the technical requirements of configuration personnel and improve the working efficiency.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (5)
1. A method for controlling process level network data flow of an intelligent substation is characterized by comprising the following steps:
establishing a data flow control template file based on an IEC61850 communication protocol, wherein the data flow control template file comprises a device attribute, a port attribute, a real intelligent electronic device IED list attribute, a virtual intelligent electronic device IED list attribute and a data flow control list attribute of a data flow control device;
filling in the device attribute and the port attribute through a configuration tool; extracting information from a full-station system configuration file SCD of an intelligent substation to fill the IED list of the real intelligent electronic equipment, the IED list of the virtual intelligent electronic equipment and the data flow control list; generating a project instance file;
and importing the engineering example file into a data flow control device, reading a data flow control list to establish a network flow control logic of the data flow control device, and realizing the control of the data flow.
2. The intelligent substation process level network data flow control method of claim 1, wherein the data flow control template file comprises:
the device attributes include: an intelligent electronic device IED name of the flow control device; an SV flow threshold; GOOSE traffic threshold;
the port attributes include: port number, port type and IED name; the port types comprise two types of equipment and cascade connection;
the real intelligent electronic device IED list attribute comprises: each real intelligent electronic device IED name, all input and output SVs contained in the IED name and a GOOSE address list;
the virtual intelligent electronic device IED list attribute comprises: each virtual intelligent electronic device IED name, all input and output SVs contained in the IED name, and a GOOSE address list;
the data flow control manifest attributes include: SV data stream manifest attribute and GOOSE data stream manifest attribute; the SV data stream manifest attributes include: an SV data stream attribute; the SV data stream attributes include: application identifier APPID, source port, state, frame rate, traffic, destination port number list; the GOOSE data stream manifest attribute includes: GOOSE data stream attributes; the GOOSE data stream attribute includes: application identifier APPID, source port, status, frame rate, traffic, destination port number list.
3. The intelligent substation process level network data flow control method of claim 1, wherein generating a project instance file comprises:
a) the IED name, the port number 1-n and the port attribute of the data flow control device are manually input by using an IEC61850 configuration tool, and the method comprises the following steps: port number and port type;
b) reading all intelligent electronic equipment IED names and SV and GOOSE attribute information attached to the intelligent electronic equipment IED names from an intelligent substation total station system configuration file SCD, wherein the SV and GOOSE attribute information comprises an SV input address list, a GOOSE input address list, an SV output address list and a GOOSE output address list, and generating a real intelligent electronic equipment IED list;
c) manually and sequentially binding intelligent electronic equipment IED which needs to be interacted through a data flow control device with a port corresponding to the flow control device; storing the IED name to the IED name in the port attribute;
d) sequentially extracting application identifiers APPID in SV output address lists of IEDs bound to ports of each data flow control device, traversing SV input address lists of all IEDs bound to the data flow control devices, searching whether the application identifiers APPID exist in SV data flow lists of the data flow control lists if the application identifiers APPID match, adding and recording the application identifiers APPID if the application identifiers APPID do not exist, and recording the current port number as a source port and adding the port number bound to the matched IED to a destination port number list; if yes, adding the port number bound by the matched IED to a destination port number list;
e) sequentially extracting application identifiers APPID in a GOOSE output address list of IEDs bound to a port of a data flow control device, traversing GOOSE input address lists of all the IEDs bound to the data flow control device, searching whether the application identifiers APPID exist in the GOOSE data flow list of the data flow control list if the application identifiers APPID match with the GOOSE output address list of all the IEDs bound to the port of the data flow control device, adding and recording the application identifiers APPID if the application identifiers APPID do not exist in the GOOSE data flow list of the data flow control list, and recording the current port number; if yes, adding the matched port number to the destination port number list;
f) if the intelligent electronic device IED connected with the two data flow control devices needs to perform data flow interaction, executing the step g); otherwise, ending;
g) the data flow control device A, B establishes virtual intelligent electronic devices VIEDa and VIEDb respectively, and designates ports An and Bn for cascade connection respectively; the virtual intelligent electronic equipment VIEDa and VIEDb manually write in the name of the virtual intelligent electronic equipment IED; respectively collecting SV input address list SV _ IN, SV output address list SV _ OUT, GOOSE input address list GOOSE _ IN, and GOOSE output address list GOOSE _ OUT of all the bound IEDs of the data flow control device A, B;
h) sequentially extracting application identifiers APPID IN an SV output address list SV _ OUT _ A of the data flow control device A, traversing an SV input address list SV _ IN _ B of the data flow control device B, respectively searching whether the application identifiers APPID exist IN the SV input address list of the virtual intelligent electronic equipment VIEDa and the SV output address list of the virtual intelligent electronic equipment VIEDb if the application identifiers APPID are matched, and adding the application identifiers APPID if the application identifiers APPID do not exist; sequentially extracting application identifiers APPID from a GOOSE output address list GOOSE _ OUT _ A of the data flow control device A, traversing a GOOSE input address list GOOSE _ IN _ B of the data flow control device B, respectively searching whether the application identifiers APPID exist IN the GOOSE input address list of the VIEDa of the virtual intelligent electronic equipment and the GOOSE output address list of the VIEDb of the virtual intelligent electronic equipment if the application identifiers APPID exist IN the GOOSE output address list of the VIEDa of the virtual intelligent electronic equipment, and adding the application identifiers APPID if the application identifiers APPID do not exist IN the GOOSE;
i) sequentially extracting application identifiers APPID in an SV output address list SV _ OUT _ B of a data flow control device B, traversing an SV input address list SV _ OUT _ A of the data flow control device A, respectively searching whether the application identifiers APPID exist in the SV input address list of virtual intelligent electronic equipment VIEDb and the SV output address list of virtual intelligent electronic equipment VIEDa if the application identifiers APPID match, and adding the application identifiers APPID if the application identifiers APPID do not exist; sequentially extracting application identifiers APPID from a GOOSE output address list GOOSE _ OUT _ B of a data flow control device B, traversing a GOOSE input address list GOOSE _ IN _ A of a data flow control device A, respectively searching whether the application identifiers APPID exist IN the GOOSE input address list of the VIEDb of the virtual intelligent electronic equipment and the GOOSE output address list of the VIEDa of the virtual intelligent electronic equipment if the application identifiers APPID exist IN the GOOSE input address list of the VIEDb of the virtual intelligent electronic equipment, and adding the application identifiers APPID if the application identifiers APPID do not exist IN the GOOSE;
j) sequentially extracting application identifiers APPID in SV output address lists of IEDs bound by spare ports of each data flow control device, traversing SV input address lists of IEDs bound by all cascading ports of the data flow control device, searching whether the application identifiers APPID exist in SV data flow lists of the data flow control lists if the application identifiers APPID match, adding and recording the application identifiers APPID if the application identifiers APPID do not exist, and recording the current port number as a source port and adding the port number bound by the matched IED to a destination port number list; if yes, adding the port number bound by the matched IED to a destination port number list;
sequentially extracting application identifiers APPID from a GOOSE output address list of IEDs bound by spare ports of the data flow control device, traversing GOOSE input address lists of all cascaded IEDs bound by the spare ports of the data flow control device, searching whether the application identifiers APPID exist in the GOOSE data flow list of the data flow control list if the application identifiers APPID match with the GOOSE output address list, adding and recording the application identifiers APPID if the application identifiers APPID do not exist in the GOOSE data flow list of the data flow control list, and recording the current port number as a source port and adding the matched port number to a destination port number list; if so, adding the matching port number to the destination port number list.
4. The intelligent substation process level network data flow control method according to claim 1, wherein reading a data flow control list to establish a network flow control logic of the data flow control device specifically comprises:
31) judging an illegal protocol: analyzing the protocol type of the message, and discarding if the protocol type is not SV or GOOSE; if so, go to step 32);
32) judging illegal data stream: analyzing application identifiers APPID of SV and GOOSE messages, judging whether the application identifiers APPID of SV and GOOSE are in an SV and GOOSE output address list of the IED bound with the current port, and discarding the messages if the application identifiers APPID of SV and GOOSE are not in the SV and GOOSE output address list; judging whether the data flow is in a data flow control list of the data flow control device, if not, discarding, and if so, entering step 33);
33) and extracting a destination port list in SV and GOOSE data stream list attributes from the data stream control list, and copying the messages one by one to a related destination port sending buffer zone.
5. The intelligent substation process level network data flow control method of claim 4, wherein generating the project instance file further comprises: counting the frame number and the flow of the SV and the GOOSE once per second and filling the frame number and the flow to the data flow control list attribute; if the frame rate and the flow of a certain SV and GOOSE are greater than the flow threshold value in the device attribute, carrying out flow limitation and alarming; and counting the time when the data stream is not received, considering that the data stream is disconnected if SV and GOOSE messages are not received within the set time, and filling the data stream to the state of the attribute of the data stream control list.
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