CN105785149A - Network tester for undercurrent grounding line selection apparatus of smart substation and network testing method therefor - Google Patents
Network tester for undercurrent grounding line selection apparatus of smart substation and network testing method therefor Download PDFInfo
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- CN105785149A CN105785149A CN201410775411.8A CN201410775411A CN105785149A CN 105785149 A CN105785149 A CN 105785149A CN 201410775411 A CN201410775411 A CN 201410775411A CN 105785149 A CN105785149 A CN 105785149A
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Abstract
The invention relates to the technical field of on-line monitoring secondary systems of a smart substation, and provides a network tester for an undercurrent grounding line selection apparatus of a smart substation and a network testing method therefor. The network tester comprises a power distribution network single-phase earth fault simulation module, a data acquisition module, an embedded system mainboard processing module, a man-machine interaction module and a communication port module. On-line on-site test on line selection function of a line selection apparatus is realized by accessing to a process layer network and a station control layer network of the smart substation. The network tester and the network testing method are especially suitable for debugging acceptance, daily operation maintenance and fault maintenance for an undercurrent grounding line selection apparatus of a smart substation.
Description
Technical field
The present invention relates to secondary system of intelligent substation on-line monitoring technique field, it is provided that the network tester of a kind of intelligent substation Small Electric Current Earthing And Routing Device and method.
Background technology
It is currently based on the intelligent substation technology of IEC-61850 standard ripe gradually and have the trend substituting rapidly tradition Substation Automation System, advances to 110kV, 35kV gradually from 500kV, 220kV.Singlephase earth fault is the fault type that in power distribution network, probability of happening is the highest, selects faulty line timely and accurately the power supply reliability improving intelligent substation is significant.For electric pressure 110kV and following intelligent substation, Small Electric Current Earthing And Routing Device is the important component part of secondary equipment of intelligent converting station, currently also has numerous corresponding solution.
The low-current ground fault line selection implementation of conventional substation is the zero-sequence current of all circuits and the residual voltage of bus accesses line selection apparatus by secondary cable, line selection apparatus carries out data acquisition, then host CPU carries out data-storing and analytical calculation, and route selection result reports to be combined from backstage or control centre.In intelligent substation, the structure of electrical secondary system is " three layers two net " structure under IEC61850 system, and intelligent substation adopts optical cable to replace cable in a large number.IEC61850-9-2 standard implementation digital signal network communication mode, the unit that merges at each interval obtains the voltage and current signal that electronic mutual inductor collects, after converting digital signal to, being sent on switch by optical fiber, secondary device obtains data by switch and processes.For Small Electric Current Earthing And Routing Device, line selection apparatus only need to possess an optical fiber interface or network interface just can obtain data, and by another one optical fiber interface or network interface the route selection result after analyzing and processing connected station level net, and report to combine from.
Tradition transformer station is generally adopted the mode of relay-protection tester for the on-the-spot test of Small Electric Current Earthing And Routing Device.Small Electric Current Earthing And Routing Device accesses the plurality of voltages current signal of relay-protection tester input and carries out data collection and analysis judgement output result.By to result comparison, the function of checking Small Electric Current Earthing And Routing Device.But for intelligent substation, traditional relay-protection tester cannot export the digital information meeting IEC61850 standard, test function therefore cannot be completed.
Full station intelligent terminal's analog of 201410158432.5 1 kinds of intelligent substations of the patent No. and using method thereof, describe and realize, by simulation intelligent terminal, the method that switching devices carries out testing, but do not mention the method for testing to wall secondary device.
The patent No. 201410004726.2 1 kinds is to the protective relaying device automatic test approach based on IEC61850 standard; describe by importing SCD file enhancing station level client functionality; automatic imitation generates digital signal and issues protective relaying device the method automatically tested, but does not mention the method being obtained SV sampled value by process-level network online.
Summary of the invention
The network tester of intelligent substation Small Electric Current Earthing And Routing Device provided by the invention and method, solving prior art cannot carry out in-circuit function test problem to intelligent substation Small Electric Current Earthing And Routing Device.
The present invention is by the following technical solutions:
The network tester of intelligent substation Small Electric Current Earthing And Routing Device, including one-phase earthing failure in electric distribution network analog module, data acquisition module, embedded microprocessor unit processing module, human-computer interaction module and PORT COM module；Described one-phase earthing failure in electric distribution network analog module one end is connected with data acquisition module, and the other end is connected with embedded microprocessor unit processing module；Described data acquisition module one end is connected with one-phase earthing failure in electric distribution network analog module, and the other end is connected with embedded microprocessor unit processing module；Described embedded microprocessor unit processing module is connected with one-phase earthing failure in electric distribution network analog module, data acquisition module respectively, human-computer interaction module and PORT COM module connect.Described PORT COM module has 2 set of network interfaces, and one group is connected with the switch of process layer net by netting twine, and another set is connected with the switch of station level net by netting twine.
As mentioned above, one-phase earthing failure in electric distribution network analog module, it is characterized in that, it is made up of analogue zero sequence network circuit and simulation zero sequence power control loop, wherein analogue zero sequence network circuit is connected to form by multichannel " Π " type equivalence circuit model head end, and circuit accesses data acquisition module by the output of Current Transformer Secondary side；Simulation zero sequence power control loop is connected with embedded main board processing module.
As it has been described above, embedded microprocessor unit processing module, it is characterised in that embedded main board hardware structure is made up of MCU module, DSP module and FPGA module.Wherein MCU module is key control unit, controls human-computer interaction module, power distribution network single-phase earthing analog module and PORT COM module；DSP module is data processing unit, and reception processes the signal of data acquisition module；FPGA module carries out Message processing.
As it has been described above, human-computer interaction module, it is characterised in that faulty line, failure time interval, fault type can be set.
As it has been described above, embedded main board processing module, it is characterised in that MCU module, by the route selection results contrast of the command file of human-computer interaction module Yu acquisition, shows testing result.
The network test method of intelligent substation Small Electric Current Earthing And Routing Device specifically includes following steps:
Step one, configures the annexation of network tester and system according to field condition；
Step 2, arranges faulty line, fault time, fault type；
Step 3, the rule file of configuration embedded microprocessor unit processing module；
Step 4, the port of configuration PORT COM module；
Step 5, according to arranging the route selection result message Determination line selection apparatus function that file receives with PORT COM.
Described step one, configure the process of the annexation of network tester and system according to field condition particularly as follows:
Determine the physical couplings of network tester and the process-level network switch of intelligence change, the station level network switch.
Described step 2, arrange faulty line, fault time, fault type process particularly as follows:
Arranging faulty line parameter, faulty line configuration becomes the quantity of the monitored circuit that Small Electric Current Earthing And Routing Device accesses and numbers corresponding with intelligence；
Arranging parameter fault time, fault time, setting was not more than 2 hours；
Arranging fault type parameter, fault type is divided into 3 classes, metallic earthing fault, intermittent grounding fault and high resistance earthing fault.
Described step 3, configuration embedded microprocessor unit processing module rule file process particularly as follows:
Importing arranges file, forms specific detected rule.
Described step 4, configuration PORT COM module port process particularly as follows:
Specific IP address or MAC Address access procedure layer network switch and the station level network switch are set.
Described step 5, according to arrange the route selection result message Determination line selection apparatus function that file and PORT COM receive process particularly as follows:
According to the detected rule formed, it determines accurately whether route selection；
According to the detected rule formed, it determines whether failure time interval is consistent；
According to detected rule, differentiate that result and message accounting generate test report file.
The invention has the beneficial effects as follows: the network tester of intelligent substation Small Electric Current Earthing And Routing Device and the advantage of method of the present invention are in that: 1, by accessing process layer net and the station level net of intelligent substation, it is possible to the online route selection function that intelligence becomes low-current ground fault line selection device carries out on-the-spot test；2, different fault types can be set online and show detection route selection result in real time.3, online same multiple stage line selection apparatus can be carried out functional test, or the line selection apparatus of different model and principle is carried out functional test.
Accompanying drawing explanation
Accompanying drawing 1 is the composition structure chart of intelligent substation Small Electric Current Earthing And Routing Device network tester；
Accompanying drawing 2 is that intelligent substation Small Electric Current Earthing And Routing Device network test instrument system connects figure；
Accompanying drawing 3 is intelligent substation Small Electric Current Earthing And Routing Device network test method flow chart.
Detailed description of the invention
For clearer explaination advantages of the present invention, below in conjunction with the drawings and specific embodiments, the present invention is further described in detail.Listing a lot of instantiation in the following description to fully understand advantages of the present invention, but the present invention can also adopt other to be different from other modes described here to be implemented, therefore the present invention is not limited to the restriction of following public instantiation.
The network tester of intelligent substation Small Electric Current Earthing And Routing Device provided by the invention, as shown in Fig. 1 Fig. 2.
Including one-phase earthing failure in electric distribution network analog module, data acquisition module, embedded microprocessor unit processing module, human-computer interaction module and PORT COM module；Described one-phase earthing failure in electric distribution network analog module one end is connected with data acquisition module, and the other end is connected with embedded microprocessor unit processing module；Described data acquisition module one end is connected with one-phase earthing failure in electric distribution network analog module, and the other end is connected with embedded microprocessor unit processing module；Described embedded microprocessor unit processing module is connected with one-phase earthing failure in electric distribution network analog module, data acquisition module respectively, human-computer interaction module and PORT COM module connect.Described PORT COM module has 2 set of network interfaces, and one group is connected with the switch of process layer net by netting twine, and another set is connected with the switch of station level net by netting twine.
As mentioned above, one-phase earthing failure in electric distribution network analog module, it is characterized in that, it is made up of analogue zero sequence network circuit and simulation zero sequence power control loop, wherein analogue zero sequence network circuit is connected to form by multichannel " Π " type equivalence circuit model head end, and circuit accesses data acquisition module by the output of Current Transformer Secondary side；Simulation zero sequence power control loop is connected with embedded main board processing module.
As it has been described above, embedded microprocessor unit processing module, it is characterised in that embedded main board hardware structure is made up of MCU module, DSP module and FPGA module.Wherein MCU module is key control unit, controls human-computer interaction module, power distribution network single-phase earthing analog module and PORT COM module；DSP module is data processing unit, and reception processes the signal of data acquisition module；FPGA module carries out Message processing.
As it has been described above, human-computer interaction module, it is characterised in that faulty line, failure time interval, fault type can be set.
As it has been described above, embedded main board processing module, it is characterised in that MCU module, by the route selection results contrast of the command file of human-computer interaction module Yu acquisition, shows testing result.
The network test method of intelligent substation Small Electric Current Earthing And Routing Device provided by the invention, specifically includes following steps, as shown in Figure 3:
Step one, configures the annexation of network tester and system according to field condition；
Step 2, arranges faulty line, fault time, fault type；
Step 3, the rule file of configuration embedded microprocessor unit processing module；
Step 4, the port of configuration PORT COM module；
Step 5, according to arranging the route selection result message Determination line selection apparatus function that file receives with PORT COM.
Described step one, configure the process of the annexation of network tester and system according to field condition particularly as follows:
Determine the physical couplings of network tester and the process-level network switch of intelligence change, the station level network switch.
Described step 2, arrange faulty line, fault time, fault type process particularly as follows:
Arranging faulty line parameter, faulty line configuration becomes the quantity of the monitored circuit that Small Electric Current Earthing And Routing Device accesses and numbers corresponding with intelligence；
Arranging parameter fault time, fault time, setting was not more than 2 hours；
Arranging fault type parameter, fault type is divided into 3 classes, metallic earthing fault, intermittent grounding fault and high resistance earthing fault.
Described step 3, configuration embedded microprocessor unit processing module rule file process particularly as follows:
Importing arranges file, forms specific detected rule.
Described step 4, configuration PORT COM module port process particularly as follows:
Specific IP address or MAC Address access procedure layer network switch and the station level network switch are set.
Described step 5, according to arrange the route selection result message Determination line selection apparatus function that file and PORT COM receive process particularly as follows:
According to the detected rule formed, it determines accurately whether route selection；
According to the detected rule formed, it determines whether failure time interval is consistent；
According to detected rule, differentiate that result and message accounting generate test report file.
Above-described embodiment is only the preferred embodiment of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any amendment of making, equivalent variations, improvement etc., should be included within protection scope of the present invention.
Claims (8)
1. the network tester of an intelligent substation Small Electric Current Earthing And Routing Device, it is characterised in that: include one-phase earthing failure in electric distribution network analog module, data acquisition module, embedded microprocessor unit processing module, human-computer interaction module and PORT COM module;Specifically:
Described one-phase earthing failure in electric distribution network analog module one end is connected with data acquisition module, and the other end is connected with embedded microprocessor unit processing module；
Described data acquisition module one end is connected with one-phase earthing failure in electric distribution network analog module, and the other end is connected with embedded microprocessor unit processing module；
Described embedded microprocessor unit processing module is connected with one-phase earthing failure in electric distribution network analog module, data acquisition module respectively, human-computer interaction module and PORT COM module connect;
Described PORT COM module has 2 set of network interfaces, and one group is connected with the switch of process layer net by netting twine, and another set is connected with the switch of station level net by netting twine.
2. the network tester of intelligent substation Small Electric Current Earthing And Routing Device according to claim 1, it is characterised in that:
Described one-phase earthing failure in electric distribution network analog module, it is characterized in that, it is made up of analogue zero sequence network circuit and simulation zero sequence power control loop, wherein analogue zero sequence network circuit is connected to form by multichannel " Π " type equivalence circuit model head end, and circuit accesses data acquisition module by the output of Current Transformer Secondary side；Simulation zero sequence power control loop is connected with embedded main board processing module;
Described embedded microprocessor unit processing module, it is characterised in that embedded main board hardware structure is made up of MCU module, DSP module and FPGA module;Wherein MCU module is key control unit, controls human-computer interaction module, power distribution network single-phase earthing analog module and PORT COM module；DSP module is data processing unit, and reception processes the signal of data acquisition module；FPGA module carries out Message processing;
Described human-computer interaction module, it is characterised in that faulty line, failure time interval, fault type can be set;
Described embedded main board processing module, it is characterised in that MCU module, by the route selection results contrast of the command file of human-computer interaction module Yu acquisition, shows testing result.
3. the network test method of intelligent substation Small Electric Current Earthing And Routing Device, it is characterised in that: said method comprising the steps of:
Step one, configures the annexation of network tester and system according to field condition；
Step 2, arranges faulty line, fault time, fault type；
Step 3, the rule file of configuration embedded microprocessor unit processing module；
Step 4, the port of configuration PORT COM module；
Step 5, according to arranging the route selection result message Determination line selection apparatus function that file receives with PORT COM.
4. intelligence according to claims 3 becomes the network test method of Small Electric Current Earthing And Routing Device, it is characterised in that: in described step one according to field condition configure network tester and the annexation of system process particularly as follows:
Determine the physical couplings of network tester and the process-level network switch of intelligence change, the station level network switch.
5. intelligence according to claims 3 becomes the network test method of Small Electric Current Earthing And Routing Device, it is characterised in that: described step 2 is arranged faulty line, fault time, fault type process particularly as follows:
Arranging faulty line parameter, faulty line configuration becomes the quantity of the monitored circuit that Small Electric Current Earthing And Routing Device accesses and numbers corresponding with intelligence；
Arranging parameter fault time, fault time, setting was not more than 2 hours；
Arranging fault type parameter, fault type is divided into 3 classes, metallic earthing fault, intermittent grounding fault and high resistance earthing fault.
6. intelligence according to claims 3 becomes the network test method of Small Electric Current Earthing And Routing Device, it is characterised in that: configure the process of the rule file of embedded microprocessor unit processing module described in described step 3 particularly as follows:
Importing arranges file, forms specific detected rule.
7. intelligence according to claims 3 becomes the network test method of Small Electric Current Earthing And Routing Device, it is characterised in that: configure the process of the port of PORT COM module described in described step 4 particularly as follows:
Specific IP address or MAC Address access procedure layer network switch and the station level network switch are set.
8. intelligence according to claims 3 becomes the network test method of Small Electric Current Earthing And Routing Device, it is characterised in that: described in described step 5 according to arrange the route selection result message Determination line selection apparatus function that file receives with PORT COM process particularly as follows:
According to the detected rule formed, it determines accurately whether route selection；
According to the detected rule formed, it determines whether failure time interval is consistent；
According to detected rule, differentiate that result and message accounting generate test report file.
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| CN201410775411.8A CN105785149A (en) | 2014-12-16 | 2014-12-16 | Network tester for undercurrent grounding line selection apparatus of smart substation and network testing method therefor |
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| CN201410775411.8A CN105785149A (en) | 2014-12-16 | 2014-12-16 | Network tester for undercurrent grounding line selection apparatus of smart substation and network testing method therefor |
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Cited By (3)
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| CN106970300A (en) * | 2017-03-09 | 2017-07-21 | 东北电力大学 | Small Electric Current Earthing And Routing Device and its control method based on neural network processor |
| CN108983135A (en) * | 2018-05-17 | 2018-12-11 | 济南置真电气有限公司 | A method of for verifying low-current ground fault line selection algorithm accuracy rate |
| CN108983137A (en) * | 2018-07-23 | 2018-12-11 | 济南置真电气有限公司 | A kind of system and method for detection single-phase earth fault line selection tripping round cut reliability |
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Patent Citations (5)
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| CN101958581A (en) * | 2010-10-28 | 2011-01-26 | 华中电网有限公司 | Network message monitoring and fault recording integrated device for intelligent transformer substation |
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| CN106970300A (en) * | 2017-03-09 | 2017-07-21 | 东北电力大学 | Small Electric Current Earthing And Routing Device and its control method based on neural network processor |
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| CN108983135A (en) * | 2018-05-17 | 2018-12-11 | 济南置真电气有限公司 | A method of for verifying low-current ground fault line selection algorithm accuracy rate |
| CN108983137A (en) * | 2018-07-23 | 2018-12-11 | 济南置真电气有限公司 | A kind of system and method for detection single-phase earth fault line selection tripping round cut reliability |
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