CN105389166A - Automatic access method for self-describing plug-and-play power distribution terminal - Google Patents
Automatic access method for self-describing plug-and-play power distribution terminal Download PDFInfo
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- G06F9/44—Arrangements for executing specific programs
- G06F9/4401—Bootstrapping
- G06F9/4411—Configuring for operating with peripheral devices; Loading of device drivers
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Abstract
The present invention discloses an automatic access method for a self-describing plug-and-play power distribution terminal. The method comprises a standard configuration process, an automatic login and security verification process and a power distribution terminal CID (Configured IED (Intelligent Electronic Device) Description) file acquisition process. For the standard configuration process, an IEC61850 configuration technology is applied, an CID file is instantiated, and a security certificate file is downloaded; for the automatic login and security verification process, the CID file is read and a login message is generated, and a login process is automatically initiated after power-on, and an automatic login to a power distribution master station is completed, wherein, the power distribution master station performs security verification on a power distribution terminal by checking a certificate, updating the certificate and checking a signature; and for the power distribution CID file acquisition process, a CRC32 checking code is compared, the CID file of the power distribution terminal is updated according to needs, so as to implement automatic access of the power distribution terminal. The present invention provides the automatic access method for the self-describing plug-and-play power distribution terminal, which enables the power distribution terminal to automatically and rapidly access a power distribution network, so that operation and maintenance costs are reduced.
Description
Technical field
The present invention relates to field of power, be specifically related to a kind of method that self-described plug and play distribution terminal accesses automatically.
Background technology
Along with the development of economic level, power distribution automation enters High Speed Construction period at home.At present along with the interdependency of the public to electrical network is more and more higher, urban safety runs, the reliability requirement of productive life to electrical network is also more and more higher, the power distribution automation monitoring of its correspondence, the distribution terminal of actuating equipment, distribution is wide, substantial amounts, running environment is severe, O&M difficulty, failure risk is large, the distribution terminal that different vendor produces in actual applications equipment cannot exchange, information cannot interconnect, need complicated configuration, repeatedly checking also cannot guarantee information complete and correct, variation equipment (as software upgrading) needs again to debug, distribution terminal is extremely rear needs special maintenance debugging acid etc. to cause maintenance time long with the test that puts into operation, O&M difficulty, these have directly had influence on the applied generalization of power distribution automation.Therefore how distribution terminal meets power distribution automation Fast Construction with reduction O&M human and material resources, financial resources is current distribution terminal facing challenges.
, to solve the difficulty run in power distribution automation implementation process, but by analyzing its implementation, mainly there is following problem in the application of plug and play technique in distribution that current domestic existing part producer begins one's study based on IEC61850:
1) general distribution main website circulation transmission broadcast " discovery " message that adopts is in order to find the distribution terminal in network, and this kind of mode exists following problem:
1. in an extensive distribution network systems, there is thousands of distribution terminal, send a large amount of broadcasting packets and easily cause network storm, whole power distribution automation afunction may be caused;
2. in distribution communication system, current switch, in order to ensure network security, needs Suppression network storm, is generally configured to suppress broadcasting packet, if adopt broadcasting packet, needs change distribution communication construction, also brings potential safety hazard simultaneously, be difficult to practical;
3. distribution main website is in order to ensure the real-time that distribution terminal is reached the standard grade, the transmission cycle must be shortened, this can increase the weight of distribution main website processing load, in order to ensure the overall performance of distribution main station system, " discovery " message transmission cycle is generally a minute rank, therefore adopts the real-time that reduction distribution terminal is reached the standard grade by this kind of mode;
2) poor universality, general " discovery " and " registration " message all adopts producer's user-defined format, and the distribution terminal of different manufacturers is difficult to access same distribution main station system;
3) general without secure authentication mechanisms, easily suffer rogue attacks.
In sum, distribution terminal plug and play technique is not implemented in engineering project.How to meet distribution terminal robotization to access fast and reduce O&M cost and be still current power distribution automation facing challenges.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, a kind of method that the object of the present invention is to provide self-described plug and play distribution terminal automatically to access, can realize distribution terminal robotization and access distribution network fast, greatly reduce O&M cost.
To achieve these goals, the technical solution used in the present invention is: a kind of method that self-described plug and play distribution terminal accesses automatically, it is characterized in that comprising the following steps:
1) standard deployment process: according to power distribution automation implementary plan, distribution terminal ICD document instance is changed into CID file, plan simultaneously and distribute distribution terminal safety certificate file, by tool software by CID file and safety certificate file download to distribution terminal;
2) automatic login and safety verification process:
2.1 logon informations obtain to be preserved with authorization information, distribution terminal powers on, read CID file and safety certificate file, and go out automatic logon information by reading CID document analysis, calculate the external CRC32 check code of CID file according to the some table information in CID file according to information period, distribution main website preserves distribution terminal CRC32 check code simultaneously;
2.2 log in message sends, and distribution terminal generates to log in message and periodically send and logs in message, until receive distribution main website to log in confirmation message;
2.3 log in message confirms, distribution main website receives after distribution terminal logs in message, resolve logging in message, extract authorization information and authorization information is verified, if authorization information is verified, then distribution main website replys and logs in confirmation message and perform step 2.4, if checking is not passed through, then distribution main website does not reply and logs in confirmation message;
2.4 safe sign tests, distribution main website utilizes safety certificate content as key, carries out sign test to distribution terminal, if sign test is passed through, then performs step 3), if sign test is not passed through, does not then perform step 3);
3) distribution terminal CID file acquisition process: judge the distribution terminal CRC32 check code preserved whether with log in the consistent of message up sending, if inconsistent, then illustrate that distribution terminal CID file upgrades, start distribution terminal CID file acquisition process, complete the acquisition of CID file, then CID file is resolved, upgrade distribution master information, complete distribution terminal and automatically access; If consistent, then directly complete distribution terminal and automatically access.
Further, in described step 1), utilize standard IEC 61850 configuration tool software to complete distribution terminal ICD document instance and change into CID file.
Further, in described step 2.1, described automatic logon information comprises exclusive identification code UID, manufacturer, distribution terminal title, model, hardware version numbers, software version number and/or installation site.
Further, in step 2.2, it is 10 seconds to 15 seconds that described periodicity sends the periodic regime logging in message.
Further, in step 2.3, described authorization information comprises exclusive identification code UID and CRC32 check code.
Further, in the safe sign test of step 2.4, before described sign test step, also comprise certificate check step and certificate update step.
Further, in the safe sign test of step 2.4, described sign test step and/or certificate check step and/or certificate update step adopt asymmetric SM2 cryptographic algorithm to process.
Further, distribution terminal is established a communications link with distribution main website by specific communication port 8090.
Further, in described step 2.2, log in message and adopt the WebService form of standard to generate.
The invention has the beneficial effects as follows: a kind of method that self-described plug and play distribution terminal accesses automatically, only need once to configure, once implement just to realize distribution terminal and automatically access, great raising power distribution automation engineering construction efficiency, is conducive to the extensive enforcement of power distribution automation; Adopt distribution terminal to power on and initiatively initiate landing approach, automatic for distribution terminal landing time can be shortened to level second, accelerate distribution terminal access speed, also greatly alleviate the burden of distribution main website simultaneously, be conducive to the performance boost of whole electrical power distribution automatization system; Adopt the WebService communication message based on self-described, be conducive to different manufacturers different terminals and realize interoperability.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the invention will be further described:
Fig. 1 is the inventive method process flow diagram;
Fig. 2 is standard deployment process schematic diagram of the present invention;
Fig. 3 is that the present invention logs in and safety verification process schematic automatically;
Fig. 4 is distribution terminal CID file acquisition process schematic of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further details:
With reference to accompanying drawing, the present invention proposes the automatic cut-in method of a kind of self-described plug and play distribution terminal, and this method mainly comprises standard deployment process, automatically to log in and safety verification process and distribution terminal CID file acquisition process.
Standard deployment process: according to power distribution automation implementary plan, passes through system configuration ICD file and SSD file, generates SCD file; SCD file is configured by IED, example changes into the CID file meeting IEC61850 standard again; Meanwhile, distribution main website plans and distributes distribution terminal safety certificate file, by tool software by CID file and safety certificate file download to distribution terminal.
Automatically log in and safety verification process: distribution terminal powers on, read CID file and safety certificate file; Distribution terminal, by reading CID file, parses automatic logon information, comprises the information such as exclusive identification code UID, manufacturer, distribution terminal title, model, hardware version numbers, software version number and installation site.Automatic logon information is not limited only to above-mentioned information.Calculate the external CRC32 check code of CID file according to the some table information in CID file according to information period simultaneously.Exclusive identification code UID information is used for distribution main website identification distribution terminal, and CRC32 check code is used for distribution main website and determines whether to upgrade CID file.Distribution main website preserves distribution terminal CRC32 check code.After completing logon information acquisition, distribution terminal generates self-described according to the WebService form of standard and logs in message, established a communications link with distribution main website by specific communication port 8090, and periodically send log on request message, such as sent once, until receive distribution main website to log in response message at interval of 10 seconds.Its cycle sending log on request message is not limited only to 10 seconds, also can be 10 seconds to 15 seconds.Distribution main website receive distribution terminal send log in message after, resolve logging in message, extract the authorization information such as exclusive identification code UID and CRC32 check code, distribution terminal is verified, if the verification passes, distribution main website replys and logs in confirmation message, if checking is not passed through, distribution main website does not reply and logs in confirmation message.
Log in successfully, distribution main website adopts asymmetric SM2 cryptographic algorithm, and send to distribution terminal and check certificate request, distribution terminal is resolved and responded the inspection certificate request of distribution main website; When distribution main website finds that the safety certificate file of distribution terminal is out of date, distribution main website sends and upgrades certificate request, and distribution terminal is resolved and responded the more new authentication message of distribution main website, upgrades safety certificate file; Then, distribution main website sends sign test request to distribution terminal, and distribution terminal is resolved and responded the sign test request of distribution main website.Log in, check certificate, more new authentication and sign test process, distribution terminal adopts safety certificate file content as key.If sign test is passed through, then forward distribution terminal CID acquisition process to.
Distribution terminal CID file acquisition process: distribution main website is to after the success of distribution terminal sign test, judge the distribution terminal CRC32 check code preserved whether with log in the consistent of message up sending, if inconsistent, then illustrate that distribution terminal CID file upgrades, start distribution terminal CID file acquisition process, complete the acquisition of CID file, then CID file is resolved, upgrade distribution master information, complete distribution terminal and automatically access; If consistent, then directly complete distribution terminal and automatically access.
A kind of method that self-described plug and play distribution terminal accesses automatically automatically log in and the data model of safety verification process comprises log on request module, logs in respond module, check certificate request module, check certificate response module, upgrade certificate request module, upgrade certificate response module, sign test request module and sign test respond module; The function of modules is as follows:
Log on request module, distribution terminal is sent to distribution main website logging in message, and request logs in;
Log in respond module, distribution main website resolves and logs in message, and extraction distribution terminal logs in the exclusive identification code UID in message, tests to distribution terminal, if by inspection, then replys and logs in response message;
Check certificate request module, distribution main website sends request and checks certificate message;
Check certificate response module, distribution terminal is resolved and is responded the inspection certificate request of distribution main website;
Upgrade certificate request module, when finding that the safety certificate file of distribution terminal is out of date, distribution main website sends more new authentication message;
Upgrade certificate response module, distribution terminal is resolved and is responded the more new authentication message of distribution main website, upgrades safety certificate file;
Sign test request module, distribution main website sends sign test request to distribution terminal;
Sign test respond module, distribution terminal is resolved and is responded the sign test request of distribution main website.
The xml code that each module comprises is as follows,
Log on request module XMLSchema describes:
<s:elementname="LoginRequest">
<s:complexType>
<s:sequence>
<s:elementname="UID"type="ews:tstring"/>//UID
<s:elementname=" CidCrc " type=" s:unsignedInt "/>//CID file CRC32 check code
<s:elementname=" ConfigVersion " type=" s:unsignedByte "/>//configuration version number
<s:elementname=" ConfigRevision " type=" s:unsignedByte "/>//configuration revision number
</s:sequence>
<s:choice>
<s:attributename=" Manufacturer " type=" ews:tstring " use=" optional "/>//manufacturer
<s:attributename=" DeviceName " type=" ews:tstring " use=" optional "/>//device name
<s:attributename=" DeviceType " type=" ews:tstring " use=" optional "/>//unit type
<s:attributename=" hwRev " type=" ews:tstring " use=" required "/>//hardware version numbers
<s:attributename=" swRev " type=" ews:tstring " use=" required "/>//software version number
<s:attributename=" Location " type=" ews:tstring " use=" optional "/>//equipment is installed and is described
</s:choice>
</s:complexType>
</s:element>
Log in respond module XMLSchema to describe:
<s:elementname="LoginResponse">
<s:complexType>
<s:sequence>
<s:elementname="UID"type="ews:tstring"/>//UID
</s:sequence>
<s:choice>
<s:elementname="ServiceError"type="ews:tServiceError"minOccurs="0"maxOccurs="1"/>
</s:choice>
</s:complexType>
</s:element>
Check that certificate request module XMLSchema describes:
<s:elementname="CheckKeyRequest">
<s:complexType>
<s:sequence>
<s:elementname=" CheckKey " type=" ews:tstring "/>//key
</s:sequence>
</s:complexType>
</s:element>
Check that certificate response module XMLSchema describes:
<s:elementname="CheckKeyResponse">
<s:complexType>
<s:sequence>
<s:elementname="CheckResult"type="ews:tstring"/>//UID
</s:sequence>
<s:choice>
<s:elementname="ServiceError"type="ews:tServiceError"minOccurs="0"maxOccurs="1"/>
</s:choice>
</s:complexType>
</s:element>
Upgrade certificate request module XMLSchema to describe:
<s:elementname="UpdateKeyRequest">
<s:complexType>
<s:sequence>
<s:elementname=" CheckKey " type=" ews:tstring "/>//key
</s:sequence>
</s:complexType>
</s:element>
Upgrade certificate response module XMLSchema to describe:
<s:elementname="UpdateKeyResponse">
<s:complexType>
<s:sequence>
<s:elementname="CheckResult"type="ews:tstring"/>//UID
</s:sequence>
<s:choice>
<s:elementname="ServiceError"type="ews:tServiceError"minOccurs="0"maxOccurs="1"/>
</s:choice>
</s:complexType>
</s:element>
Sign test request module XMLSchema describes:
<s:elementname="VerifyRequest">
<s:complexType>
<s:sequence>
<s:elementname=" CheckKey " type=" ews:tstring "/>//key
</s:sequence>
</s:complexType>
</s:element>
Sign test respond module XMLSchema describes:
<s:elementname="VerifyResponse">
<s:complexType>
<s:sequence>
<s:elementname="CheckResult"type="ews:tstring"/>//UID
</s:sequence>
<s:choice>
<s:elementname="ServiceError"type="ews:tServiceError"minOccurs="0"maxOccurs="1"/>
</s:choice>
</s:complexType>
</s:element>
Be described as example with log on request XMLSchema: element defines an element, elementname is corresponding masurium, and element corresponding to log on request module is called loginRequest; ComlexType defines the element of complicated type, and be the XML element comprising other elements, this log on request module comprises exclusive identification code UID and CRC32 check code etc.; Element in sequence requirement group appears in containing element with appointment order; Attribute defines an attribute, and attributename is corresponding attribute-name; Attribute in choice selection group, attribute in this log on request module comprises manufacturer, device name, unit type, hardware version numbers, software version number and equipment and installs description, wherein hardware version numbers and software version number are required, and other are optional;
Distribution terminal generates self-described according to the WebService form of standard and logs in message, established a communications link, and transmission logs in message periodically automatically by specific communication port 8090 with distribution main website; What distribution main website parsing distribution terminal sent logs in message, extracts the exclusive identification code UID logged in message, tests to distribution terminal, if by inspection, then reply logs in response message.
More than that the better enforcement of invention is illustrated, but innovation and creation are not limited to described embodiment, those of ordinary skill in the art also can make all equivalent modifications or replacement under the prerequisite without prejudice to spirit of the present invention, and these equivalent modification or replacement are all included in the application's claim limited range.
Claims (9)
1. the method that self-described plug and play distribution terminal accesses automatically, is characterized in that comprising the following steps:
Standard deployment process: according to power distribution automation implementary plan, changes into CID file by distribution terminal ICD document instance, plans simultaneously and distributes distribution terminal safety certificate file, by tool software by CID file and safety certificate file download to distribution terminal;
Automatic login and safety verification process:
2.1 logon informations obtain to be preserved with authorization information, distribution terminal powers on, read CID file and safety certificate file, and go out automatic logon information by reading CID document analysis, calculate the external CRC32 check code of CID file according to the some table information in CID file according to information period, distribution main website preserves distribution terminal CRC32 check code simultaneously;
2.2 log in message sends, and distribution terminal generates to log in message and periodically send and logs in message, until receive distribution main website to log in confirmation message;
2.3 log in message confirms, distribution main website receives after distribution terminal logs in message, resolve logging in message, extract authorization information and authorization information is verified, if authorization information is verified, then distribution main website replys and logs in confirmation message and perform step 2.4, if checking is not passed through, then distribution main website does not reply and logs in confirmation message;
2.4 safe sign tests, distribution main website utilizes safety certificate content as key, carries out sign test to distribution terminal, if sign test is passed through, then performs step 3), if sign test is not passed through, does not then perform step 3);
Distribution terminal CID file acquisition process: judge the distribution terminal CRC32 check code preserved whether with log in the consistent of message up sending, if inconsistent, then illustrate that distribution terminal CID file upgrades, start distribution terminal CID file acquisition process, complete the acquisition of CID file, then CID file is resolved, upgrade distribution master information, complete distribution terminal and automatically access; If consistent, then directly complete distribution terminal and automatically access.
2. the method that automatically accesses of a kind of self-described plug and play distribution terminal according to claim 1, is characterized in that, in described step 1), utilize standard IEC 61850 configuration tool software to complete distribution terminal ICD document instance and change into CID file.
3. the method that automatically accesses of a kind of self-described plug and play distribution terminal according to claim 1, it is characterized in that, in described step 2.1, described automatic logon information comprises exclusive identification code UID, manufacturer, distribution terminal title, model, hardware version numbers, software version number and/or installation site.
4. the method that automatically accesses of a kind of self-described plug and play distribution terminal according to claim 1, is characterized in that, in step 2.2, it is 10 seconds to 15 seconds that described periodicity sends the periodic regime logging in message.
5. the method that automatically accesses of a kind of self-described plug and play distribution terminal according to claim 1, it is characterized in that, in step 2.3, described authorization information comprises exclusive identification code UID and CRC32 check code.
6. the method that automatically accesses of a kind of self-described plug and play distribution terminal according to claim 1, is characterized in that, in the safe sign test of step 2.4, also comprise certificate check step and certificate update step before described sign test step.
7. the method that automatically accesses of a kind of self-described plug and play distribution terminal according to claim 6, it is characterized in that, in the safe sign test of step 2.4, described sign test step and/or certificate check step and/or certificate update step adopt asymmetric SM2 cryptographic algorithm to process.
8. the method that automatically accesses of a kind of self-described plug and play distribution terminal according to claim 1, is characterized in that, distribution terminal is established a communications link with distribution main website by specific communication port 8090.
9. the method that automatically accesses of a kind of self-described plug and play distribution terminal according to claim 1, is characterized in that, in described step 2.2, logs in message and adopts the WebService form of standard to generate.
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Inventor after: Zeng Xiangfei Inventor after: Hai Tao Inventor after: Jiang Minshan Inventor after: Tang Dingyang Inventor before: Zeng Xiangfei Inventor before: Tang Dingyang Inventor before: Jiang Minshan |