CN103618384B - Secondary circuit closed loop monitoring system based on GOOSE input end mapping mechanism - Google Patents
Secondary circuit closed loop monitoring system based on GOOSE input end mapping mechanism Download PDFInfo
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Abstract
The invention provides a secondary circuit closed loop monitoring system based on a GOOSE input end mapping mechanism in the technical field of power systems. The secondary circuit closed loop monitoring system comprises a network communication module, a model analyzing module, a pattern generating module, a real-time comparing module and a data storage module. The model analyzing module analyzes SCD files from the network communication module, outputs an obtained static model of an IED device virtual terminal/virtual circuit to the pattern generating module, maps a GOOSE message feature value and a GOOSE input terminal to mapping definitions of a corresponding MMS model object, and outputs the mapping definitions to the real-time comparing module. According to an IED device standard drawing template prestored in the data storage module and the static model of an IED device virtual terminal/virtual circuit in the model analyzing module, by means of a template matching technology, the pattern generating module carries out matching on the IED device standard drawing template to generate an IED device secondary circuit diagram, and output the IED device secondary circuit diagram to the data storage module for visual display. According to the system, abnormal conditions of a secondary circuit and abnormal situations of a GOOSE control block, a dataset, goIDs and other key content can be found timely according to abnormality of a GOOSE message. Secondary circuit closed loop monitoring based on the GOOSE input end mapping mechanism is achieved, and reliable technical guarantee is provided for safe operation of an intelligent substation.
Description
Technical field
What the present invention relates to is a kind of on-line monitoring system of technical field of power systems, specifically a kind of secondary circuit closed loop monitoring system based on GOOSE input mapping mechanism.
Background technology
Along with the propelling based on IEC61850 Substation Automation System engineer applied, the connecting mode of substation secondary device IED instead of traditional cable by optical-fibre communications and connects, GOOSE (the GenericObject Oriented Substation Event that the association of function is defined by IEC61850, transformer substation case towards general object) realize, transformer station secondary system is by SCD (Substation Configuration Description, substation configuration description) file contains, thus, whole transformer station secondary system becomes a black box, run, maintainer cannot observe the incidence relation between the secondary devices such as protection intuitively, many difficulties are brought to substation operation management, too increase the risk of substation operation.
Through finding the retrieval of prior art, Chinese Patent Application No. 201310124402.8, publication date 2013-07-03, disclose a kind of based on protective device secondary circuit model real time on-line monitoring system, this technology comprises: network communication module, model analyzing module, graph generation module, model storage module and real-time comparing module, model analyzing module is connected with model storage module with graph generation module respectively and exports SCD static models and the CID on-time model after resolving respectively, real-time comparing module and network communication module, model storage module is connected, receive the SCD static models after GOOSE real-time model and checking and the CID on-time model after resolving, comparison result is exported to network communication module after comparison, and be uploaded to background system, realize real time and on line monitoring.The present invention can connect because of the secondary circuit corresponding to SCD file amendment, CID configuration error, GOOSE message the mistake that the reasons such as obstacle cause the empty terminal of protection and secondary circuit by Timeliness coverage in real time, makes the state run, maintainer directly can know incidence relation between the secondary devices such as protection.But this technology cannot realize the mapping of the empty terminal input of GOOSE and MMS model object, when therefore can not carry out real time execution, empty circuit communication accurately judges.
Summary of the invention
The present invention is directed to prior art above shortcomings, propose a kind of secondary circuit closed loop monitoring system based on GOOSE input mapping mechanism, can effectively control substation operation risk, for intelligent substation reliability service provides solid foundation.
The present invention is achieved by the following technical solutions, the present invention includes: network communication module, model analyzing module, graph generation module, in real time comparing module and data memory module, wherein: data memory module is connected with graph generation module, in real time comparing module and network communication module and realizes data respectively and stores alternately, network communication module is connected and the SCD file received from background system and IED device standard drawing template with IED device with background system by MMS net, simultaneously network communication module to be connected with IED device by GOOSE net and to receive GOOSE message, in addition network communication module exports SCD file respectively to model analyzing module, export to real-time comparing module the GOOSE extracted from GOOSE message and MMS REPORT message respectively to input empty terminal value and GOOSE and input empty terminal mapping value and receive and reach background system from after the abnormality alarming signal of real-time comparing module on the net by MMS, model analyzing module is resolved according to the SCD file from network communication module, and exports the static models obtaining the empty terminal/empty loop of IED device to graph generation module respectively, GOOSE message characteristic value and GOOSE input terminal are mapped to the mapping definition of corresponding MMS model object and export real-time comparing module to, graph generation module, according to the empty terminal/empty loop static models of the IED device in the IED device standard drawing template prestored in data memory module and model analyzing module, to be mated IED device standard drawing template by template matching technique and exports data memory module to for visual presentation after generating IED device secondary circuit graph, real-time comparing module is by parameter matching comparison and comparison abnormality alarming signal is delivered to data memory module.
Described parameter matching comparison refers to: in real time comparing module adopts the comparison respectively of parameter matching mode: the consistency of the characteristic value 1) defined from GOOSE message relevant in the GOOSE message characteristic value of model analyzing module and the SCD file from model analyzing module, 2) from GOOSE message and MMS REPORT message, extract the GOOSE obtained respectively export the consistency that empty terminal value and GOOSE input empty terminal mapping value; And comparison abnormality alarming signal is delivered to data memory module.
Described MMS net is connected with IED device and receives the MMS REPORT message from IED device.
The described data that realize store and refer to alternately: data memory module receives and preserve from the SCD file of network communication module and IED device standard drawing template and send IED device standard drawing template to graph generation module, reception preservation from real-time comparing module abnormality alarming signal and be sent to network communication module.
Described real-time comparing module comprises: comparison data processing unit and parameter comparing unit, wherein: comparison data processing unit receives from the fixed reference feature value of the GOOSE message of model analyzing module, be mapped to from the GOOSE message of network communication module, GOOSE input terminal the MMS Report message that corresponding MMS model object is formed; Parameter comparing unit takes the respectively comparison of parameter matching technology: the fixed reference feature value of the GOOSE message defined in the GOOSE message 1) received and SCD file, 2) GOOSE extracted from the GOOSE message received exports empty terminal value and the consistency inputting correlation in MMS Report message that model object that empty terminal is mapped to corresponding MMS formed through GOOSE, and when inconsistent, generate abnormality alarming signal and export data memory module and network communication module respectively to.
Technique effect
Compared with prior art, the present invention is by abnormal Timeliness coverage secondary circuit unusual condition (comprising the mispairing of empty terminal loop line in IED) of GOOSE message; The abnormal conditions of the key content definition such as GOOSE controll block, data set, goID.Realize monitoring, for intelligent substation safe operation provides robust techniques guarantee based on the secondary circuit closed loop of GOOSE input mapping mechanism.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is embodiment schematic flow sheet.
Embodiment
Elaborate to embodiments of the invention below, the present embodiment is implemented under premised on technical solution of the present invention, give detailed execution mode and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Embodiment 1
As shown in Figure 1, the present embodiment comprises: network communication module, model analyzing module, graph generation module, in real time comparing module and data memory module, wherein: data memory module is connected with graph generation module, in real time comparing module and network communication module and realizes data respectively and stores alternately, network communication module is connected and the SCD file received from background system and IED device standard drawing template with IED device with background system by MMS net, simultaneously network communication module to be connected with IED device by GOOSE net and to receive GOOSE message, in addition network communication module exports SCD file respectively to model analyzing module, export to real-time comparing module the GOOSE extracted from GOOSE message and MMS REPORT message respectively to input empty terminal value and GOOSE and input empty terminal mapping value and receive and reach background system from after the abnormality alarming signal of real-time comparing module on the net by MMS, model analyzing module is resolved according to the SCD file from network communication module, and exports the static models obtaining the empty terminal/empty loop of IED device to graph generation module respectively, GOOSE message characteristic value and GOOSE input terminal are mapped to the mapping definition of corresponding MMS model object and export real-time comparing module to, graph generation module, according to the empty terminal/empty loop static models of the IED device in the IED device standard drawing template prestored in data memory module and model analyzing module, to be mated IED device standard drawing template by template matching technique and exports data memory module to for visual presentation after generating IED device secondary circuit graph, real-time comparing module is by parameter matching comparison and comparison abnormality alarming signal is delivered to data memory module.
Described static models refer to: only comprise the model represented by full detail be correlated with in the empty loop of IED device, comprise the definition etc. of data set in GOOSE controll block definition (containing Mac address), Extref definition, GOOSE controll block.
Described mapping definition refers to: in SCD file, label is the content of <mmsinput> definition among <Private type=" VirtMMSmap " >.This content provided GOOSE input terminal is mapped to the related content of the model object of corresponding MMS.
Described GOOSE message characteristic value refers to: APPID stands uniquely entirely; MAC multicast address; GocbRef, GOOSE controll block is quoted; DatSet data set is quoted; GoID, GOOSE controll block identifies.
Described GOOSE input terminal maps and refers to: owing to directly cannot read by MMS service the value that GOOSE inputs empty terminal.In IED inside, GOOSE is inputted the model object that empty terminal (intaddr in the <Extref> in SCD) is mapped to wall, thus read value by the MMS REPORT Message Service of wall.That is in IED inside, the value of these empty terminals is set up synchronous changing mechanisms with the value of other object, such mechanism maps exactly.
Described parameter matching comparison refers to: in real time comparing module adopts the comparison respectively of parameter matching mode: the consistency of the characteristic value 1) defined from GOOSE message relevant in the GOOSE message characteristic value of model analyzing module and the SCD file from model analyzing module, 2) from GOOSE message and MMS REPORT message, extract the GOOSE obtained respectively export the consistency that empty terminal value and GOOSE input empty terminal mapping value; And comparison abnormality alarming signal is delivered to data memory module.
Described MMS net is connected with IED device and receives the MMS REPORT message from IED device.
The described data that realize store and refer to alternately: data memory module receives and preserve from the SCD file of network communication module and IED device standard drawing template and send IED device standard drawing template to graph generation module, reception preservation from real-time comparing module abnormality alarming signal and be sent to network communication module.
Described network communication module comprises: MMS Network Communication unit, GOOSE Network Communication unit and network data processing unit, wherein: MMS Network Communication unit obtains transformer station's SCD file and IED device standard drawing template respectively from background system, from the MMS Report message that IED device acquisition GOOSE input terminal mapping pair answers MMS model object to be formed, and export network data processing unit to; SCD file is sent into model analyzing module by network data processing unit, and IED device standard drawing template is delivered to data memory module, and the MMS Report message of MMS is delivered to real-time comparing module; GOOSE Network Communication unit obtains GOOSE message by GOOSE network port and exports network data processing unit to from IED device, and network data processing unit exports GOOSE message to real-time comparing module.
Described model analyzing module comprises: resolution data processing unit and model analyzing unit, wherein: resolution data processing unit receives SCD file and sends into model analyzing unit, model analyzing unit takes SCL (Substation Configuration Language, Substation Configuration Language) tag search technology, resolve the static models that SCD file obtains the empty terminal/empty loop of IED device, the fixed reference feature value of GOOSE message and GOOSE input terminal are mapped to the mapping definition of corresponding MMS model object, graph generation module and real-time comparing module is exported respectively to by resolution data processing unit.
Described SCL tag search technology refers to: according to the ad-hoc location of the various label of SCL in SCD file, each label is set as a state, corresponding to finding according to the change of state model.The label classification searched for, as <IED, >, </IED>, Inputs label classification: <Inputs, >, </Inputs>, / >, GSEcontrol label classification: <GSEControl, >, </GSEControl>, LD label classification: <LDevice, >, </LDevice>, / >, LN label classification: <LN, >, </LN>, / >, Dataset label classification: <DataSet, >, </DataSet>, / > etc.
Described graph generation module comprises: graphic processing data unit and template matches unit, wherein: graphic processing data unit receives the static models of model analyzing module transfer and the IED device standard drawing template of data memory module transmission, static models mate with IED device standard drawing template by template matches unit, form IED device secondary circuit graph, and export data memory module.
Described template matches refers to: according to the typical apply of protective relaying device, pre-determines the test pattern template of various IED device I/O input, and the empty terminal/empty loop static models of IED device mate with it, automatically generate IED device secondary circuit graph.
Described real-time comparing module comprises: comparison data processing unit and parameter comparing unit, wherein: comparison data processing unit receives from the fixed reference feature value of the GOOSE message of model analyzing module, be mapped to from the GOOSE message of network communication module, GOOSE input terminal the MMS Report message that corresponding MMS model object is formed; Parameter comparing unit takes the respectively comparison of parameter matching technology: the fixed reference feature value of the GOOSE message defined in the GOOSE message 1) received and SCD file, 2) GOOSE extracted from the GOOSE message received exports empty terminal value and the consistency inputting correlation in MMS Report message that model object that empty terminal is mapped to corresponding MMS formed through GOOSE, and when inconsistent, generate abnormality alarming signal and export data memory module and network communication module respectively to.
Described parameter matching refers to: by unique for the full station in the GOOSE message received, MAC multicast address, gocbRef, GOOSE controll block are quoted, DatSet data set is quoted, goID GOOSE controll block mark compares with the analog value obtained by resolving SCD file; In the MMS Report message that the empty terminal value of the output of extracting from the GOOSE message received and the model object being mapped to corresponding MMS through GOOSE input terminal are formed, correlation compares.
Described data memory module comprises: store data processing unit and data storage cell, wherein: store data processing unit and receive SCD file, IED device standard drawing template, IED device secondary circuit graph and real-time comparison abnormality alarming signal, preserved by data storage cell, and accept the data call of network communication module.
As shown in Figure 2, native system carries out work in the following manner:
S100, network communication module obtain SCD file and IED device test pattern template from transformer station's background system, deliver to model analyzing module and data memory module respectively;
S200, model analyzing module are by SCL tag search technology, protection electrical secondary system description document based on SCL language is resolved to the mapping definition that the empty terminal of IED device/empty loop static models, GOOSE message characteristic value and GOOSE input terminal is mapped to corresponding MMS model object, respectively static models, GOOSE message characteristic value and GOOSE input terminal are mapped to the mapping definition of corresponding MMS model object, export graph generation module and real-time comparing module respectively to;
S300, graph generation module are based on template matching technique, by static models and IED device test pattern template matches, automatic generation IED device secondary circuit graph, deliver to data memory module, and export network communication module to, export background system to through MMS network communication interface, support the visual presentation of IED device secondary circuit;
The MMS Report message that the model object that S400, network communication module are mapped to corresponding MMS through MMS Network Capture IED apparatus GOOSE input terminal is formed, reads the GOOSE message of IED device, exports real-time comparing module to through GOOSE network;
S500, in real time comparing module obtain the mapping definition that GOOSE message characteristic value and GOOSE input terminal are mapped to corresponding MMS model object from model analyzing module, obtain GOOSE message from network communication module, and IED apparatus GOOSE inputs the MMS Report message that model object that empty terminal is mapped to corresponding MMS formed.Adopt parameter matching technology, carry out consistency comparison, and export comparison abnormality alarming signal to data memory module.
S600, data memory module preserve SCD file, IED device test pattern template, IED device secondary circuit graph and comparison abnormality alarming signal, and accept the data call of network communication module.
The IED device secondary circuit graph of S700, network communication module calling data memory module and comparison abnormality alarming signal, realize visual presentation through background system.
This method resolves SCD file by taking SCL tag search technology, forms the mapping definition that empty terminal/empty loop static models, GOOSE message characteristic value and GOOSE input terminal is mapped to corresponding MMS model object; Take template matching technique, by static models and IED device test pattern template matches, automatically generate IED device secondary circuit graph; Take parameter matching technology, the fixed reference feature value of the GOOSE message defined in the GOOSE message that comparison receives and SCD file; The consistency of correlation in the MMS Report message that the comparison empty terminal value of output extracted from the GOOSE message received and the model object that GOOSE input terminal is mapped to corresponding MMS are formed, and carry out visual presentation through background system, realize the line closed loop monitoring of IED device secondary circuit.
Native system can find the unusual condition (comprising the mispairing of empty terminal loop line in IED) of the empty terminal/empty connection of circuit of IED device in real time by said method, the closed loop monitoring form the input of empty terminal, exporting; The abnormal conditions of the key content definition such as GOOSE controll block, data set, goID; realize the closed loop monitoring of intelligent substation IED device secondary circuit; make the state that intelligent substation run duration runs, maintainer directly can obtain the IED device secondary circuits such as protection; thus effectively control substation operation risk, for intelligent substation reliability service provides solid foundation.
Claims (9)
1. the secondary circuit closed loop monitoring system based on GOOSE input mapping mechanism, it is characterized in that, comprise: network communication module, model analyzing module, graph generation module, in real time comparing module and data memory module, wherein: data memory module is connected with graph generation module, in real time comparing module and network communication module and realizes data respectively and stores alternately, network communication module is connected and the SCD file received from background system and IED device standard drawing template with IED device with background system by MMS net, simultaneously network communication module to be connected with IED device by GOOSE net and to receive GOOSE message, in addition network communication module exports SCD file respectively to model analyzing module, export to real-time comparing module the GOOSE extracted from GOOSE message and MMS REPORT message respectively to input empty terminal value and GOOSE and input empty terminal mapping value and receive and reach background system from after the abnormality alarming signal of real-time comparing module on the net by MMS, model analyzing module is resolved according to the SCD file from network communication module, and exports the static models obtaining the empty terminal/empty loop of IED device to graph generation module respectively, GOOSE message characteristic value and GOOSE input terminal are mapped to the mapping definition of corresponding MMS model object and export real-time comparing module to, graph generation module, according to the empty terminal/empty loop static models of the IED device in the IED device standard drawing template prestored in data memory module and model analyzing module, to be mated IED device standard drawing template by template matching technique and exports data memory module to for visual presentation after generating IED device secondary circuit graph, real-time comparing module is by parameter matching comparison and comparison abnormality alarming signal is delivered to data memory module,
Described parameter matching comparison refers to: in real time comparing module adopts the comparison respectively of parameter matching mode: the consistency of the characteristic value 1) defined from GOOSE message relevant in the GOOSE message characteristic value of model analyzing module and the SCD file from model analyzing module, 2) from GOOSE message and MMS REPORT message, extract the GOOSE obtained respectively export the consistency that empty terminal value and GOOSE input empty terminal mapping value; And comparison abnormality alarming signal is delivered to data memory module.
2. system according to claim 1, is characterized in that, described MMS net is connected with IED device and receives the MMS REPORT message from IED device, and this MMS REPORT message comprises IED secondary circuit graph and abnormality alarming signal.
3. system according to claim 1, it is characterized in that, the described data that realize store and refer to alternately: data memory module receives and preserve from the SCD file of network communication module and IED device standard drawing template and send IED device standard drawing template to graph generation module, reception preservation from real-time comparing module abnormality alarming signal and be sent to network communication module.
4. system according to claim 1, it is characterized in that, described network communication module comprises: MMS Network Communication unit, GOOSE Network Communication unit and network data processing unit, wherein: MMS Network Communication unit obtains transformer station's SCD file and IED device standard drawing template respectively from background system, from the MMS Report message that IED device acquisition GOOSE input terminal mapping pair answers MMS model object to be formed, and export network data processing unit to; SCD file is sent into model analyzing module by network data processing unit, and IED device standard drawing template is delivered to data memory module, and the MMS Report message of MMS is delivered to real-time comparing module; GOOSE Network Communication unit obtains GOOSE message by GOOSE network port and exports network data processing unit to from IED device, and network data processing unit exports GOOSE message to real-time comparing module.
5. system according to claim 1, it is characterized in that, described model analyzing module comprises: resolution data processing unit and model analyzing unit, wherein: resolution data processing unit receives SCD file and sends into model analyzing unit, model analyzing unit takes SCL tag search technology, resolve SCD file and obtain the mapping definition that IED the device empty static models in terminal/empty loop, the fixed reference feature value of GOOSE message and GOOSE input terminal are mapped to corresponding MMS model object, export graph generation module and real-time comparing module respectively to by resolution data processing unit.
6. system according to claim 1, it is characterized in that, described graph generation module comprises: graphic processing data unit and template matches unit, wherein: graphic processing data unit receives the static models of model analyzing module transfer and the IED device standard drawing template of data memory module transmission, static models mate with IED device standard drawing template by template matches unit, form IED device secondary circuit graph, and export data memory module.
7. system according to claim 1, it is characterized in that, described real-time comparing module comprises: comparison data processing unit and parameter comparing unit, wherein: comparison data processing unit receives from the fixed reference feature value of model analyzing module GOOSE message, be mapped to from the GOOSE message of network communication module, GOOSE input terminal the MMS Report message that corresponding MMS model object is formed; Parameter comparing unit takes the respectively comparison of parameter matching technology: the fixed reference feature value of the GOOSE message defined in the GOOSE message 1) received and SCD file, 2) GOOSE extracted from the GOOSE message received exports empty terminal value and the consistency inputting correlation in MMS Report message that model object that empty terminal is mapped to corresponding MMS formed through GOOSE, and when inconsistent, generate abnormality alarming signal and export data memory module and network communication module respectively to.
8. system according to claim 1, it is characterized in that, described data memory module comprises: store data processing unit and data storage cell, wherein: store data processing unit and receive SCD file, IED device standard drawing template, IED device secondary circuit graph and real-time comparison abnormality alarming signal, preserved by data storage cell, and accept the data call of network communication module.
9. the monitoring method of system according to above-mentioned arbitrary claim, comprises the following steps:
S100, network communication module obtain SCD file and IED device test pattern template from transformer station's background system, deliver to model analyzing module and data memory module respectively;
S200, model analyzing module are by SCL tag search technology, protection electrical secondary system description document based on SCL language is resolved to the mapping definition that the empty terminal of IED device/empty loop static models, GOOSE message characteristic value and GOOSE input terminal is mapped to corresponding MMS model object, respectively static models, GOOSE message characteristic value and GOOSE input terminal are mapped to the mapping definition of corresponding MMS model object, export graph generation module and real-time comparing module respectively to;
S300, graph generation module are based on template matching technique, by static models and IED device test pattern template matches, automatic generation IED device secondary circuit graph, deliver to data memory module, and export network communication module to, export background system to through MMS network communication interface, support the visual presentation of IED device secondary circuit;
The MMS Report message that the model object that S400, network communication module are mapped to corresponding MMS through MMS Network Capture IED apparatus GOOSE input terminal is formed, reads the GOOSE message of IED device, exports real-time comparing module to through GOOSE network;
S500, in real time comparing module obtain the mapping definition that GOOSE message characteristic value and GOOSE input terminal are mapped to corresponding MMS model object from model analyzing module, GOOSE message is obtained from network communication module, and IED apparatus GOOSE inputs the MMS Report message that model object that empty terminal is mapped to corresponding MMS formed, adopt parameter matching technology, carry out consistency comparison, and export comparison abnormality alarming signal to data memory module;
S600, data memory module preserve SCD file, IED device test pattern template, IED device secondary circuit graph and comparison abnormality alarming signal, and accept the data call of network communication module;
The IED device secondary circuit graph of S700, network communication module calling data memory module and comparison abnormality alarming signal, realize visual presentation through background system.
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| CN108156049B (en) * | 2017-11-22 | 2021-02-12 | 国网辽宁省电力有限公司电力科学研究院 | GOOSE virtual loop testing and managing system of in-place protection device |
| CN107991562B (en) * | 2017-11-29 | 2020-01-14 | 西电通用电气自动化有限公司 | Intelligent substation virtual terminal closed loop test method |
| CN108199338A (en) * | 2017-12-25 | 2018-06-22 | 国网江苏省电力有限公司检修分公司 | A kind of protective device action correctness evaluation system and method |
| CN110380514B (en) * | 2019-08-02 | 2023-08-25 | 云南电网有限责任公司电力科学研究院 | Intelligent substation relay protection secondary circuit fault diagnosis method |
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| KR20080100295A (en) * | 2007-05-12 | 2008-11-17 | 현대중공업 주식회사 | Gateway structure |
| CN101409463A (en) * | 2008-12-02 | 2009-04-15 | 江西省电力科学研究院 | Protection and video system gang control method for electric power system digitalization transforming plant |
| CN102291277B (en) * | 2011-08-09 | 2013-06-19 | 上海思源弘瑞自动化有限公司 | Automatic test system and method for intelligent substation spacing apparatus |
| CN102647026B (en) * | 2012-04-24 | 2014-04-09 | 上海毅昊自动化有限公司 | System for visually dynamically monitoring running state of relay protector |
| CN102707169B (en) * | 2012-05-21 | 2014-07-16 | 上海毅昊自动化有限公司 | Relay protection accident image detecting system and relay protection accident image detecting method |
| CN103166323B (en) * | 2013-04-11 | 2014-11-26 | 上海毅昊自动化有限公司 | System for monitoring secondary circuit model on line in real time based on protection device |
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