CN109189448B - 61850 protocol-based method for online upgrading of relay protection device program - Google Patents
61850 protocol-based method for online upgrading of relay protection device program Download PDFInfo
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Abstract
The invention relates to a 61850 protocol-based online upgrading method for a relay protection device program, which comprises the steps of firstly, expanding an IEC61850 data model, expressing a program upgrading function by using a logic node type with an expanded name of BUPD, expressing a character string state by using a data object type with an expanded name of STS, and storing a program upgrading history record; and then upgrading the relay protection device program through an IEC61850 client by utilizing the extended IEC61850 data model. Under the condition that the device is sealed and no private interface is exposed, the invention can conveniently upgrade programs by utilizing an IEC61850 protocol; the relay protection device stores the program version online upgrade record into a file, and supports a client to retrieve the program version online upgrade record through an IEC61850 protocol, so that the workload of manual record and retrieval is greatly reduced, and the problems that the upgrade history record is inconvenient to trace and the software version is inconvenient to manage in the traditional upgrade program method are solved.
Description
Technical Field
The invention belongs to the technical field of power system automation, and particularly relates to a 61850 protocol-based method for upgrading a relay protection device program on line.
Background
The IEC61850 standard is the only global universal standard in the field of power system automation, realizes the engineering operation standardization of the intelligent substation, ensures that the engineering implementation of the intelligent substation becomes standard, uniform and transparent, and well solves the problem of interoperability among relay protection devices of the substation and between the relay protection devices and a background.
At present, the IEC61850 standard is widely adopted in the field of intelligent substation communication in China. Communication ports of relay protection devices of various manufacturers all support IEC61850 protocol. With the continuous deep understanding of the standards, the domestic technical specification continuously optimizes the specific functional details of IEC61850 applied in the relay protection communication field. At present, the domestic application of the IEC61850 standard is mainly aimed at the transmission of signals in the running process of the device, and the application specifications of the device in the aspects of debugging and the like are also perfected.
If the relay protection device which is started to operate by the manufacturer does not meet the latest application requirement in function or needs to add a new function, the manufacturer needs to perform online upgrade on the program of the relay protection device at a proper time. At present, program upgrading means of relay protection devices are not uniform by various manufacturers, and the program upgrading methods are still in a stage of upgrading by respectively adopting private interfaces, such as extracting a board card, upgrading an FPGA program by using a writer, upgrading by using a USB (universal serial bus) and upgrading by using a private protocol. The problems faced by upgrading by adopting a private interface currently are as follows:
1. with the development of electronic technology, the miniaturization and sealing of relay protection devices are the trend, so that excessive private interfaces, such as the latest in-situ protection device, a black box outside the relay protection device are not reserved, the device is not allowed to be disassembled after installation, and thus, the upgrading cannot be carried out by using private interfaces and protocols such as a writer and a USB (universal serial bus).
2. The upgrading methods are inconvenient to uniformly manage, no traceable upgrading record and upgrading process exists in the device after upgrading, and more versions of the equipment need to be recorded by means of manual methods.
Because the communication ports of the relay protection devices of all manufacturers support the IEC61850 protocol, the problem can be effectively solved by upgrading the programs of the relay protection devices based on the IEC61850 protocol. The difficulty of this solution implementation:
1. at present, the application specification of IEC61850 does not have a modeling for the debugging function of the device in China, the expandability of an IEC61850 data model needs to be flexibly applied, the model specified by the current IEC61850 standard is expanded, and meanwhile, the reliability and the safety of program upgrading are ensured by selecting proper IEC61850 service.
2. The relay protection device side needs to be connected with an interface of an IEC61850 protocol in an interfacing mode, and a reasonable log storage format and an access strategy storage device program are used for upgrading and recording the program into a device capable of being stored persistently.
Disclosure of Invention
In order to solve the technical problems, the invention provides a solution for upgrading a relay protection device program on line based on an IEC61850 standard protocol, and the IEC61850 data model is expanded, and IEC61850 service control and monitoring upgrading of the relay protection device program are utilized. The technical scheme adopted by the invention is as follows:
the method for upgrading the relay protection device program on line based on the 61850 protocol comprises the following steps:
step 1, the expandability of an IEC61850 data model is flexibly utilized, and the IEC61850 data model is expanded on the basis of a fixed data model specified by a standard: the program upgrade function is represented by a logical node type named BUPD, and the string state is represented by a data object type named STS for storing program upgrade history. The IEC61850 series standard defines the chapters of the data model to be 7-3 and 7-4, the chapters 7-3 specify various types of definitions of data objects, the chapters 7-4 specify various types of definitions of logic nodes, such as a breaker and a differential protection, all of which are logic nodes, and all data objects and logic nodes defined by the current standard have no relevant support for upgrading program functions. Based on the BUPD data model, the IEC61850 client adopts direct control service, report service and device to interact, and program upgrading logic is completed.
And 2, upgrading the program on the relay protection device side through an IEC61850 client by utilizing the extended IEC61850 data model.
Preferably, the logical node type named BUPD in the extension of step 1 comprises four parts: common logical node information, control information, status information, and fixed value information.
Preferably, the common logical node information is used for indicating whether the current functional state of the logical node is available;
the control information is used for controlling the relay protection device to carry out program upgrading, two data objects representing control functions, namely BinUpEna and UpStart, are established, and the two data objects adopt a direct control mode;
the state information is used for acquiring the result of program upgrading and establishing five data objects representing state information, namely BinChkOk, BinChkErr, BinUpOk, BinUpErr and UpHistory;
the fixed value information is used for carrying out parameter configuration on the program upgrading function and establishing the PassWord and BinRef data objects.
Preferably, the BinUpEna is used to indicate program upgrade enabling, the UpStart is used to indicate program upgrade starting, the BinChkOk indicates that application verification is completed, the BinChkErr indicates that program verification fails, the BinUpOk indicates that device program upgrade succeeds, the binuperrr indicates that device program upgrade fails, the UpHistory is used to record program upgrade history, PassWord indicates PassWord information, and BinRef indicates the location of a program file.
Preferably, when the program of the relay protection device is upgraded through the IEC61850 client in step 2, the operation flow at the client side is as follows:
2.1.1, putting a maintenance soft pressing plate of the relay protection device into the maintenance soft pressing plate to ensure that the device is in a maintenance state;
2.1.2, writing in PassWord information to obtain an upgrading authority;
2.1.3, turning on a program upgrading switch based on BinUpEna in an IEC61850 direct control mode;
2.1.4, uploading the file to a relay protection device through IEC61850 file service;
2.1.5, judging whether to wait for IEC61850 report information which is sent by the device based on BinChkOk and successfully checked, if not, switching to the next step, and if so, switching to the step 2.1.7;
2.1.6, judging whether the waiting time is overtime, if yes, turning to a step 2.1.11, and if not, turning to a step 2.1.5;
2.1.7, filling a path of the program file into a fixed value object BinRef, and then triggering a relay protection device to start program upgrading based on the UpStart data object in a direct control mode;
2.1.8, judging whether to wait for the relay protection device to update successfully IEC61850 report information sent by the BinUpOk, if not, switching to the next step, and if so, switching to the step 2.1.10;
2.1.9, judging whether the waiting time is overtime, if yes, turning to step 2.1.11, and if not, turning to step 2.1.8;
2.1.10, reporting the success of upgrading, and ending the upgrading process; when the upgrade is successful, reading the upgrade history record of the software version through IEC61850 log service;
2.1.11, reporting the upgrade failure and ending the upgrade process.
Preferably, when the program of the relay protection device is upgraded through the IEC61850 client in step 2, the processing flow of the relay protection device side is as follows:
2.2.1, receiving a setting command of a client for overhauling a soft pressing plate and a password, receiving a control command for program upgrading and enabling, and receiving a request of uploading a program file based on IEC61850 file service;
2.2.2, judging whether a program upgrading switch is turned on, if so, turning to the next step, and if not, turning to the step 2.2.14;
2.2.3, receiving and verifying the program file;
2.2.4, judging whether the verification is successful, if so, turning to the next step, if not, uploading an IEC61850 report to the client to indicate that the verification is failed, and turning to the step 2.2.14;
2.2.5, uploading an IEC61850 report to the client to indicate that the verification is successful;
2.2.6, judging whether a command for starting program upgrading sent by the client through the IEC61850 direct control service is received, if so, turning to the step 2.2.8, and if not, turning to the next step;
2.2.7, judging whether the waiting time is overtime, if yes, turning to the step 2.2.14, and if not, turning to the step 2.2.6;
2.2.8, judging whether the program verification is successful, if so, switching to the next step, if not, uploading an IEC61850 report to the client to indicate that the upgrade is failed, and switching to the step 2.2.14;
2.2.9, starting an upgrading program of the relay protection device;
2.2.10, judging whether the program upgrading is successful, if not, uploading an IEC61850 report to the client to indicate that the upgrading is failed, and turning to the step 2.2.14, and if so, turning to the next step;
2.2.11, uploading IEC61850 report information to the client to show that the upgrade is successful;
2.2.12, writing version upgrading records, wherein the log record logic of IEC61850 is triggered by data stream modification, and the version number and the upgrading version of the program are written into the data model;
2.2.13, persisting the program upgrading information in a log mode to form a history record;
and 2.2.14, resetting the program upgrading enabling state, setting the password as invalid, and deleting the program file passing the verification if the program file passing the verification exists.
Preferably, the format of the log record file is in a binary form, and after the number of recorded information pieces reaches the maximum, the oldest stored entry is deleted.
The invention has the beneficial effects that:
1) the method conforms to the trend of miniaturization and distribution of relay protection devices, and can conveniently perform program upgrading by utilizing IEC61850 protocol under the condition that the devices are sealed and no private interface is exposed.
2) According to the method, the log service function of IEC61850 is flexibly utilized, a reasonable, simple and feasible program upgrade history record storage and access format is adopted on the device side, the relay protection device stores the program version online upgrade record into a file, and supports a client to retrieve the program version through an IEC61850 protocol, so that the workload of manual recording and retrieval is greatly reduced, and the problems that the upgrade history record is inconvenient to trace and the software version is inconvenient to manage in the traditional upgrade program method are solved.
Drawings
Fig. 1 is a schematic diagram of an operation flow of a client side when a program of a relay protection device is upgraded by an IEC61850 client;
fig. 2 is a schematic processing flow diagram of the relay protection device side when the program of the relay protection device is upgraded by the IEC61850 client.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
The method for upgrading the relay protection device program on line based on the 61850 protocol comprises the following steps:
step 1, extending an IEC61850 data model, representing a program upgrading function by using a logical node type with an extension name of BUPD, and representing a character string state by using a data object type with an extension name of STS and storing a program upgrading history. The IEC61850 specification 7-4 specifies a number of logical nodes to represent various functions or devices in the current power system, and the logical nodes provided in these standards can meet most of the current application requirements, but traverse all the logical node definitions in the standards, and have no information about program upgrade. The method makes full use of the data model expandability of IEC61850 to create a new logical node type BUPD, which is specifically shown in the following table.
Extended logical node BUPD definition table
Note: M/O indicates whether it is optional. The M representation is a mandatory option. E denotes data attribute which is an extension, belonging to the selectable item.
In the above table, the logical node includes four parts: common logical node information, control information, status information, and fixed value information.
1) Common logical node information: information is present in each logical node indicating whether the logical node's current functional state is available.
Common data object types that have been specified in the referenced IEC61850 standard are:
INC controllable integer state.
INS is integer state.
LPL logic node nameplate.
2) Control information: and establishing two data objects representing control functions, namely BinUpEna and UpStart, wherein the two data objects adopt a direct control mode.
The BinUpEna is used for representing program upgrading enabling, and the object at the relay protection device side can enter an enabling state only under the conditions of correct overhaul and password; upstart indicates that a program upgrade is started, and the program upgrade can be started only in a state where the program upgrade enable is 1.
Common data object types that have been specified in the referenced IEC61850 standard are:
SPC-controllable Single Point State (State can only be 1 or 0).
3) State information: in order to correctly obtain the result of program upgrade, five data objects representing state information, namely BinChkOk, BinChkErr, BinUpOk, BinUpErr and UpHistory, are established.
Common data object types that have been specified in the referenced IEC61850 standard are:
SPS, single point state information (state can only be 1 or 0).
The data types that are extended are:
STS is string type status information.
The BinChkOk represents that the verification of the application program is completed, and when the device receives the file sent by the client and the verification is successful, the state information in the data object is set to be 1; BinChkErr represents program check failure, and when the device receives a file sent by the client and check failure occurs, the state in the data object is set to be 1; BinUpOk represents that the device program is successfully upgraded, and the state of the data object is set to be 1 after the relay protection device program is successfully upgraded; BinUPerr represents that the program of the device fails to be upgraded, and the state of the data object is set to be 1 after the program of the relay protection device fails to be upgraded; and the UpHistory is used for recording the program upgrading history, and when the program is upgraded successfully, the data is recorded into an IEC61850 log file.
The UpHistory records the program upgrade history, using a string state type, and there is no such definition in the common data object type defined in IEC618507-3, so we extend one data object type STS, and the program code of the extended data object type is as follows:
in this program code:
the DOType node represents a data object type definition and the id represents an identification code when this type is referenced. cdc is the collective term for data object types.
The DA represents a data attribute.
bType indicates the type of data attribute that makes up this data object. Where Unicode255 denotes a Unicode type with a maximum length of 255. Quality indicates Quality information of data (e.g., whether the device is in a maintenance state). Timestamp denotes time information of data. VisString255 represents a visible string of maximum length 255.
fc represents a functional constraint for this data attribute. ST indicates status information, read only. DC denotes that the description information is readable and writable. EX denotes extension information, read only.
The meaning of each data attribute in this definition of data object type is as follows:
stVal: the character string information is stored.
q: the quality information indicates the quality of data when the character string is stored, for example, whether or not the apparatus is under inspection.
And t is time information which indicates the time for storing the character string.
dU: description information for describing the data object referring to this type.
cdcNs: a namespace representing the extended data object type.
cdcName: the name of the data object type representing this extension.
The data Ns: representing a namespace referencing data objects of this type.
4) Fixed value information: in order to carry out parameter configuration on the program upgrading function, a PassWord and BinRef data object is established.
Wherein, PassWord represents PassWord information, and the program upgrading function can be enabled only after the correct PassWord is input; BinRef represents the position of the program file, and the client tells the relay protection device to read the path of the program file through the fixed value.
The data object types expanded in the cited national power grid enterprise standard QGDW1396IEC 61850 engineering relay protection application model are as follows:
STG: string information that can be tuned.
Step 2, upgrading the program of the relay protection device through an IEC61850 client by using the extended IEC61850 data model, as shown in FIG. 1, which is an operation flow diagram of the client side when the program of the relay protection device is upgraded through the IEC61850 client, and the specific operation flow is as follows:
2.1.1, putting a maintenance soft pressing plate of the relay protection device into the maintenance soft pressing plate to ensure that the device is in a maintenance state;
2.1.2, writing in PassWord information to obtain an upgrading authority;
2.1.3, turning on a program upgrading switch based on BinUpEna in an IEC61850 direct control mode;
2.1.4, uploading the file to a relay protection device through IEC61850 file service;
2.1.5, judging whether to wait for IEC61850 report information which is sent by the device based on BinChkOk and successfully checked, if not, switching to the next step, and if so, switching to the step 2.1.7;
2.1.6, judging whether the waiting time is overtime, if yes, turning to a step 2.1.11, and if not, turning to a step 2.1.5;
2.1.7, filling a path of the program file into a fixed value object BinRef, and then triggering a relay protection device to start program upgrading based on the UpStart data object in a direct control mode;
2.1.8, judging whether to wait for the relay protection device to update successfully IEC61850 report information sent by the BinUpOk, if not, switching to the next step, and if so, switching to the step 2.1.10;
2.1.9, judging whether the waiting time is overtime, if yes, turning to step 2.1.11, and if not, turning to step 2.1.8;
2.1.10, reporting the success of upgrading, and ending the upgrading process; when the upgrade is successful, reading the upgrade history record of the software version through IEC61850 log service;
2.1.11, reporting the upgrade failure and ending the upgrade process.
As shown in fig. 2, the schematic processing flow of the relay protection device side when the program of the relay protection device is upgraded by the IEC61850 client is shown, and the specific processing flow is as follows:
2.2.1, receiving a setting command of a client for overhauling a soft pressing plate and a password, receiving a control command for program upgrading and enabling, and receiving a request of uploading a program file based on IEC61850 file service;
2.2.2, judging whether a program upgrading switch is turned on, if so, turning to the next step, and if not, turning to the step 2.2.14;
2.2.3, receiving and verifying the program file;
2.2.4, judging whether the verification is successful, if so, turning to the next step, if not, uploading an IEC61850 report to the client to indicate that the verification is failed, and turning to the step 2.2.14;
2.2.5, uploading an IEC61850 report to the client to indicate that the verification is successful;
2.2.6, judging whether a command for starting program upgrading sent by the client through the IEC61850 direct control service is received, if so, turning to the step 2.2.8, and if not, turning to the next step;
2.2.7, judging whether the waiting time is overtime, if yes, turning to the step 2.2.14, and if not, turning to the step 2.2.6;
2.2.8, judging whether the program verification is successful, if so, switching to the next step, if not, uploading an IEC61850 report to the client to indicate that the upgrade is failed, and switching to the step 2.2.14;
2.2.9, starting an upgrading program of the relay protection device;
2.2.10, judging whether the program upgrading is successful, if not, uploading an IEC61850 report to the client to indicate that the upgrading is failed, and turning to the step 2.2.14, and if so, turning to the next step;
2.2.11, uploading IEC61850 report information to the client to show that the upgrade is successful;
2.2.12, writing version upgrading records, wherein the log record logic of IEC61850 is triggered by data stream modification, and the version number and the upgrading version of the program are written into the data model;
2.2.13, persisting the program upgrading information in a log mode to form a history record;
and 2.2.14, resetting the program upgrading enabling state, setting the password as invalid, and deleting the program file passing the verification if the program file passing the verification exists.
And when the relay protection device receives the log reading service of the client, converting the version upgrading historical record information in the stored log record file into an IEC61850 standard message, and returning the IEC61850 standard message to the client. For fast retrieval and conversion to IEC61850 protocol, the format of the log record file is in binary form, and the oldest stored entry is deleted after the number of recorded information pieces reaches the maximum. Under the condition that the device is sealed and no private interface is exposed, the invention can conveniently upgrade programs by utilizing an IEC61850 protocol; the relay protection device stores the program version online upgrade record into a file, and supports a client to retrieve the program version online upgrade record through an IEC61850 protocol, so that the workload of manual record and retrieval is greatly reduced, and the problems that the upgrade history record is inconvenient to trace and the software version is inconvenient to manage in the traditional upgrade program method are solved.
Claims (3)
1. A61850 protocol-based method for online upgrading of a relay protection device program is characterized by comprising the following steps:
step 1, extending an IEC61850 data model, and representing a program upgrading function by using a logic node type with an extension name of BUPD; using data object type with extended name as STS to represent character string state for storing program upgrading history record;
step 2, upgrading the program of the relay protection device through an IEC61850 client by utilizing the extended IEC61850 data model;
the logic node type with the extension name of BUPD in the step 1 comprises four parts: the system comprises common logic node information, control information, state information and fixed value information, wherein the common logic node information is used for indicating whether the current functional state of a logic node is available or not; the control information is used for controlling the relay protection device to carry out program upgrading, two data objects representing control functions, namely BinUpEna and UpStart, are established, and the two data objects adopt a direct control mode; the state information is used for acquiring the result of program upgrading and establishing five data objects representing state information, namely BinChkOk, BinChkErr, BinUpOk, BinUpErr and UpHistory; the fixed value information is used for carrying out parameter configuration on the program upgrading function and establishing a PassWord and BinRef data object;
the system comprises a BinUpEna, a UpStart, a BinChkOk, a BinChkErr, a device and a BinUpOk, wherein the BinUpEna is used for indicating program upgrade enabling, the UpStart indicates that program upgrade is started, the BinChkOk indicates that verification of an application program is completed, the BinChkErr indicates that program verification fails, the BinUpOk indicates that device program upgrade succeeds, the BinUpErr indicates that device program upgrade fails, the UpHistory is used for recording program upgrade history, PassWord indicates PassWord information, and the BinRef indicates the position of a program file;
step 2, when the program of the relay protection device is upgraded through the IEC61850 client, the operation flow of the client side is as follows:
2.1.1, putting a maintenance soft pressing plate of the relay protection device into the maintenance soft pressing plate to ensure that the device is in a maintenance state;
2.1.2, writing in PassWord information to obtain an upgrading authority;
2.1.3, turning on a program upgrading switch based on BinUpEna in an IEC61850 direct control mode;
2.1.4, uploading the file to a relay protection device through IEC61850 file service;
2.1.5, judging whether to wait for IEC61850 report information which is sent by the device based on BinChkOk and successfully checked, if not, switching to the next step, and if so, switching to the step 2.1.7;
2.1.6, judging whether the waiting time is overtime, if yes, turning to a step 2.1.11, and if not, turning to a step 2.1.5;
2.1.7, filling a path of the program file into a fixed value object BinRef, and then triggering a relay protection device to start program upgrading based on the UpStart data object in a direct control mode;
2.1.8, judging whether to wait for the relay protection device to update successfully IEC61850 report information sent by the BinUpOk, if not, switching to the next step, and if so, switching to the step 2.1.10;
2.1.9, judging whether the waiting time is overtime, if yes, turning to step 2.1.11, and if not, turning to step 2.1.8;
2.1.10, reporting the success of upgrading, and ending the upgrading process; when the upgrade is successful, reading the upgrade history record of the software version through IEC61850 log service;
2.1.11, reporting the upgrade failure and ending the upgrade process.
2. The method for upgrading the program of the relay protection device on line based on the 61850 protocol as claimed in claim 1, wherein when the program of the relay protection device is upgraded by the IEC61850 client in step 2, the processing flow of the relay protection device side is as follows:
2.2.1, receiving a setting command of a client for overhauling a soft pressing plate and a password, receiving a control command for program upgrading and enabling, and receiving a request of uploading a program file based on IEC61850 file service;
2.2.2, judging whether a program upgrading switch is turned on, if so, turning to the next step, and if not, turning to the step 2.2.14;
2.2.3, receiving and verifying the program file;
2.2.4, judging whether the verification is successful, if so, turning to the next step, if not, uploading an IEC61850 report to the client to indicate that the verification is failed, and turning to the step 2.2.14;
2.2.5, uploading an IEC61850 report to the client to indicate that the verification is successful;
2.2.6, judging whether a command for starting program upgrading sent by the client through the IEC61850 direct control service is received, if so, turning to the step 2.2.8, and if not, turning to the next step;
2.2.7, judging whether the waiting time is overtime, if yes, turning to the step 2.2.14, and if not, turning to the step 2.2.6;
2.2.8, judging whether the program verification is successful, if so, switching to the next step, if not, uploading an IEC61850 report to the client to indicate that the upgrade is failed, and switching to the step 2.2.14;
2.2.9, starting an upgrading program of the relay protection device;
2.2.10, judging whether the program upgrading is successful, if not, uploading an IEC61850 report to the client to indicate that the upgrading is failed, and turning to the step 2.2.14, and if so, turning to the next step;
2.2.11, uploading IEC61850 report information to the client to show that the upgrade is successful;
2.2.12, writing version upgrading records, wherein the log record logic of IEC61850 is triggered by data stream modification, and the version number and the upgrading version of the program are written into the data model;
2.2.13, persisting the program upgrading information in a log mode to form a history record;
and 2.2.14, resetting the program upgrading enabling state, setting the password as invalid, and deleting the program file passing the verification if the program file passing the verification exists.
3. The 61850 protocol-based on-line upgrading method of the relay protection device program according to claim 2, wherein the format of the log record file is binary, and when the number of the recorded information pieces reaches the maximum, the oldest storage entry is deleted.
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