CN103529417A - Automatic detection system for fault indicators for distributing line - Google Patents
Automatic detection system for fault indicators for distributing line Download PDFInfo
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Abstract
The invention provides an automatic detection system for fault indicators for a distributing line. The automatic detection system for the fault indicators for the distributing line comprises an automatic test module, an output control device, a data acquisition unit and a control acquisition unit. The output control device, the data acquisition unit and the control acquisition unit are respectively connected with the automatic test module by computer communication lines. According to the automatic detection system for the fault indicators for the distributing line provided by the invention, the real-time acquisition of the action states of the fault indicators is realized. The amplitude of a tested alternating voltage signal and the amplitude of an alternating current signal can respectively reach 10kV and 2kA, and actual signals of the line can be more accurately simulated. Moreover, the automatic detection system for the fault indicators for the distributing line is high in degree of automation, test efficiency and safety.
Description
Technical field
The present invention relates to a kind of detection system, be specifically related to a kind of distribution line failure indicator automatic checkout system.
Background technology
Although play a large amount of line-failure indicators that use in distribution line, Qie Qi manufacturing enterprise number is numerous, but also there is no unified indicator standards and guidelines both at home and abroad, cause fault alarm that the fault detector that uses in distribution network systems adopts according to being not quite similar, the difference of technology level of product is very large, when line failure, indicator motion accuracy is low, easily fails to report, the phenomenon such as wrong report.
2010, State Grid Corporation of China has promulgated company standard " Q/GDW436-2010 distribution line failure indicator techniques standard ", the function of fault detector, performance index and method of testing carried out to unified regulation, stipulated the test event of several functions, performance.Although advanced fault detector detection technique generally adopts program control or PLC to control, there is alternating voltage, electric current, then produce overhead transmission line voltage, current signal by step-up transformer, up-flow coil, the fault detector hanging on up-flow coil is detected.But said detecting system is open cycle system, need manual record testing result and judge, it is wasted time and energy, and signal output accuracy is lower, time control accuracy is lower, poor practicability, is difficult to realize the detection of robotization, can not meet the demand of fault detector function that " Q/GDW436-2010 distribution line failure indicator techniques standard " propose, performance, efficiency test.
The inventor finds by large quantity research, and fault detector detection system requires further improvement practicality, realizes robotization, need to solve following technical matters:
(1) can automatically gather and failure judgement indicator motion state, form closed loop detection system;
(2) improve alternating voltage, electric current output amplitude and precision;
(3) improve signal output time control accuracy;
(4) auto Detection Software that design test project is complete, man-machine interface is friendly.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the invention provides a kind of distribution line failure indicator automatic checkout system, realized the Real-time Collection to fault detector operating state, ac voltage signal and the ac current signal amplitude of test can reach 10kV, 2kA, can more accurate analog line actual signal, and automaticity is high, testing efficiency is high, security is good.
In order to realize foregoing invention object, the present invention takes following technical scheme:
The invention provides a kind of distribution line failure indicator automatic checkout system, described system comprises automatic test module, output-controlling device, data collector and control harvester; Described output-controlling device, data collector and control harvester are connected with described automatic test module by computer communication line respectively.
Described Auto-Test System is given described output-controlling device output AC voltage signal and ac current signal, described output-controlling device is given respectively up-flow coil and step-up transformer output AC current signal and ac voltage signal, and ac current signal and ac voltage signal are respectively through amplifying the ac voltage signal of voltage levels and the ac current signal of high current class that forms the actual overhead transmission line of simulation; Described fault detector is arranged on described up-flow coil, and its switching value node output terminal is connected to the switching value input end of described control harvester, and its wireless communication signals is received and resolved by the reception of wireless signals module of controlling in harvester; By the PFGA controlling in harvester, gather fault detector action and the involution status information that parsing obtains, FPGA sends to output-controlling device by optical fiber communication modules by contact status signal and wireless telecommunications information; The voltage measurement end of described data collector is parallel to the voltage output end of described output-controlling device, and its current measurement end adopts current transformer, and described current transformer is socketed on the electric current output line of output-controlling device.
Described output-controlling device comprises DSP module, DAC module, alternating voltage power amplifier, alternating current power amplifier and optical fiber communication modules; Described DSP module receives parameter and the order of host computer output, by real-time calculating, controls DAC module and exports simulated ac voltage signal and ac current signal; Described alternating voltage power amplifier and alternating current power amplifier receive respectively ac voltage signal and the ac current signal of DAC module output, and the ac voltage signal of reception and ac current signal are transferred to respectively to step-up transformer and up-flow coil after amplifying; Described optical fiber communication modules receives the fiber-optic signal from data collector, therefrom parses action message and the involution status information of fault detector, and the action message of fault detector and involution status information upload to host computer by described DSP module.
Described DSP module is carried out the real-time calculating of 3 cross streams voltages and 3 cross streams electric currents simultaneously, and calculating in real time superpose DC component, harmonic component or high-frequency pulse string component, to produce failure voltage signal and the fault current signal under short trouble and earth-fault conditions;
The way of output of described DSP module is divided into manual output and status switch output;
Manually, under the pattern of output, can change at any time amplitude, phase place and the frequency of output signal, and the amplitude of superposed signal, phase place and frequency;
Under the pattern of status switch output, user sets in advance parameter before output, comprises output signal parameter and State-output time, and status switch has been exported rear described output-controlling device and stopped output.
Described data collector comprises measurement module, data acquisition module, microprocessor module and record wave memory module; Described measurement module is transferred to described data acquisition module by the AC signal of collection; Described data acquisition module inputs to record wave memory module by the AC signal of collection, after AC signal being changed and calculated simultaneously, result of calculation is inputed to microprocessor module, and the original interchange data that gather are inputed to record wave memory module; Described microprocessor module inputs to host computer by the original AC signal of result of calculation and collection.
Described measurement module comprises ac voltage measurement module and ac current measurement module, respectively ac voltage signal and ac current signal is measured.
Described record wave memory module comprises large capacity nonvolatile memory, for storing in short-term ac voltage signal, ac current signal, fault detector status information and temporal information.
Described control harvester comprises intake state detection module, reception of wireless signals module, FPGA and optical fiber communication modules; Described intake state detection module detects intake signal, the corresponding contact status signal obtaining; Described reception of wireless signals module receives fault detector wireless signal, and the wireless signal receiving is resolved, and obtains fault detector action and involution status information; Described FPGA gathers contact status signal and wireless telecommunications information, by optical fiber communication modules, contact status signal and wireless telecommunications information is sent to output-controlling device, and receives the acquisition configuration order that output-controlling device is sent.
Described intake signal comprises idle contact intake signal and level contact intake signal; Described contact status signal comprises idle contact status signal and level contact status signal.
Described automatic test module is controlled AC signal output, by data collector with control harvester and collect test signal, and the status information returned of fault detector, form and comprise output, feedback and the automatic checkout system of monitoring.
Compared with prior art, beneficial effect of the present invention is:
1. realized the Real-time Collection to fault detector operating state;
2. test voltage, current signal amplitude can reach 10kV, 2kA, can more accurate analog line actual signal;
3. control accuracy is high the output signal time, and error is less than 100 microseconds, can realize that output state accurately switches, phase angle is controlled, the time controls;
4. test signal amplitude changes fast response time, DC component, harmonic component and high fdrequency component can superpose arbitrarily;
5. automatic checkout system automaticity is high, testing efficiency is high, security is good.
Automatic checkout system can all kinds of short troubles of comprehensive simulated circuit, earth fault and false alarm prevention state, test event has contained whole fault detector functions, testing performance index project that " Q/GDW436-2010 distribution line failure indicator techniques standard " proposes, and realized the automatic test of project, can greatly reduce test duration and tester's working strength, increase work efficiency and test and management level.
Accompanying drawing explanation
Fig. 1 is distribution line failure indicator automatic checkout system structured flowchart;
Fig. 2 is output-controlling device structured flowchart;
Fig. 3 is data collector structured flowchart;
Fig. 4 controls harvester structured flowchart;
Fig. 5 is automatic test module functional schematic;
Fig. 6 is distribution line failure indicator automatic checkout system workflow diagram.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
As Fig. 1, the invention provides a kind of distribution line failure indicator automatic checkout system, the invention provides a kind of distribution line failure indicator automatic checkout system, described system comprises automatic test module, output-controlling device, data collector and control harvester; Described output-controlling device, data collector and control harvester are connected with described automatic test module by computer communication line respectively.
Described Auto-Test System is given described output-controlling device output AC voltage signal and ac current signal, described output-controlling device is given respectively up-flow coil and step-up transformer output AC current signal and ac voltage signal, and ac current signal and ac voltage signal are respectively through amplifying the ac voltage signal of voltage levels and the ac current signal of high current class that forms the actual overhead transmission line of simulation; Described fault detector is arranged on described up-flow coil, and its switching value node output terminal is connected to the switching value input end of described control harvester, and its wireless communication signals is received and resolved by the reception of wireless signals module of controlling in harvester; By the PFGA controlling in harvester, gather fault detector action and the involution status information that parsing obtains, FPGA sends to output-controlling device by optical fiber communication modules by contact status signal and wireless telecommunications information; The voltage measurement end of described data collector is parallel to the voltage output end of described output-controlling device, and its current measurement end adopts current transformer, and described current transformer is socketed on the electric current output line of output-controlling device.
As Fig. 2, described output-controlling device comprises DSP module, DAC module, alternating voltage power amplifier, alternating current power amplifier and optical fiber communication modules; Described DSP module receives parameter and the order of host computer output, by real-time calculating, controls DAC module and exports simulated ac voltage signal and ac current signal; Described alternating voltage power amplifier and alternating current power amplifier receive respectively ac voltage signal and the ac current signal of DAC module output, and the ac voltage signal of reception and ac current signal are transferred to respectively to step-up transformer and up-flow coil after amplifying; Described optical fiber communication modules receives the fiber-optic signal from data collector, therefrom parses action message and the involution status information of fault detector, and the action message of fault detector and involution status information upload to host computer by described DSP module.
Described DSP module is carried out the real-time calculating of 3 cross streams voltages and 3 cross streams electric currents simultaneously, and calculating in real time superpose DC component, harmonic component or high-frequency pulse string component, to produce failure voltage signal and the fault current signal under short trouble and earth-fault conditions;
The way of output of described DSP module is divided into manual output and status switch output;
Manually, under the pattern of output, can change at any time amplitude, phase place and the frequency of output signal, and the amplitude of superposed signal, phase place and frequency;
Under the pattern of status switch output, user sets in advance parameter before output, comprises output signal parameter and State-output time, and status switch has been exported rear described output-controlling device and stopped output.
As Fig. 3, described data collector comprises measurement module, data acquisition module, microprocessor module and record wave memory module; Described measurement module is transferred to described data acquisition module by the AC signal of collection; Described data acquisition module inputs to record wave memory module by the AC signal of collection, after AC signal being changed and calculated simultaneously, result of calculation is inputed to microprocessor module, and the original interchange data that gather are inputed to record wave memory module; Described microprocessor module inputs to host computer by the original AC signal of result of calculation and collection.
Described measurement module comprises ac voltage measurement module and ac current measurement module, respectively ac voltage signal and ac current signal is measured.
Described record wave memory module comprises large capacity nonvolatile memory, for storing in short-term ac voltage signal, ac current signal, fault detector status information and temporal information.
As Fig. 4, described control harvester comprises intake state detection module, reception of wireless signals module, FPGA and optical fiber communication modules; Described intake state detection module detects intake signal, the corresponding contact status signal obtaining; Described reception of wireless signals module receives fault detector wireless signal, and the wireless signal receiving is resolved, and obtains fault detector action and involution status information; Described FPGA gathers contact status signal and wireless telecommunications information, by optical fiber communication modules, contact status signal and wireless telecommunications information is sent to output-controlling device, and receives the acquisition configuration order that output-controlling device is sent.
Described intake signal comprises idle contact intake signal and level contact intake signal; Described contact status signal comprises idle contact status signal and level contact status signal.
As Fig. 5, described automatic test module is controlled AC signal output, by data collector with control harvester and collect test signal, and the status information returned of fault detector, form and comprise output, feedback and the automatic checkout system of monitoring.
Fig. 6 is distribution line failure indicator automatic checkout system workflow diagram.
Automatic checkout system provided by the invention has solved some technical matterss that robotization detects:
1. adopt and directly gather fault detector output switch amount contact, or the mode of wireless communication signals, realized the collection to fault detector operating state.Above collection signal real-time Transmission is to control device, and time error is less than 100 microseconds;
2. adopt high-precision alternating voltage and current power amplifier.The maximum output of alternating current amplifier 60A, output accuracy 0.5%, peak power output 1100VA.Up-flow coil input end is received in alternating current output, and during output 60A electric current, up-flow coil can produce the magnetic flux that is not less than 2000 ampere-turns.The maximum output of alternating voltage amplifier 250V, output accuracy 0.5%, peak power output 75VA.The PT secondary side that boosts is received in alternating voltage output, and the PT primary side that boosts produces maximum 10kV voltage;
3. adopt high-speed dsp to control and exchange output with FPGA, output signal time departure is less than 100 microseconds.The power amplifier of no-float frequency response, control device can realize accurately that output state switches, phase angle is controlled, the time controls, and can realize alternating current superpose arbitrarily DC component, harmonic component, high fdrequency component etc.;
4. the test event of automatic testing software has contained whole fault detector functions, testing performance index project that " Q/GDW436-2010 distribution line failure indicator techniques standard " proposes, and realized the automatic test of project, can greatly reduce test duration and tester's working strength, increase work efficiency and test and management level.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit, although the present invention is had been described in detail with reference to above-described embodiment, those of ordinary skill in the field are to be understood that: still can modify or be equal to replacement the specific embodiment of the present invention, and do not depart from any modification of spirit and scope of the invention or be equal to replacement, it all should be encompassed in the middle of claim scope of the present invention.
Claims (10)
1. a distribution line failure indicator automatic checkout system, is characterized in that: described system comprises automatic test module, output-controlling device, data collector and control harvester; Described output-controlling device, data collector and control harvester are connected with described automatic test module by computer communication line respectively.
2. distribution line failure indicator automatic checkout system according to claim 1, it is characterized in that: described Auto-Test System is to described output-controlling device output AC voltage signal and ac current signal, described output-controlling device is given respectively up-flow coil and step-up transformer output AC current signal and ac voltage signal, and ac current signal and ac voltage signal are respectively through amplifying the ac voltage signal of voltage levels and the ac current signal of high current class that forms the actual overhead transmission line of simulation; Described fault detector is arranged on described up-flow coil, and its switching value node output terminal is connected to the switching value input end of described control harvester, and its wireless communication signals is received and resolved by the reception of wireless signals module of controlling in harvester; By the PFGA controlling in harvester, gather fault detector action and the involution status information that parsing obtains, FPGA sends to output-controlling device by optical fiber communication modules by contact status signal and wireless telecommunications information; The voltage measurement end of described data collector is parallel to the voltage output end of described output-controlling device, and its current measurement end adopts current transformer, and described current transformer is socketed on the electric current output line of output-controlling device.
3. distribution line failure indicator automatic checkout system according to claim 1, is characterized in that: described output-controlling device comprises DSP module, DAC module, alternating voltage power amplifier, alternating current power amplifier and optical fiber communication modules; Described DSP module receives parameter and the order of host computer output, by real-time calculating, controls DAC module and exports simulated ac voltage signal and ac current signal; Described alternating voltage power amplifier and alternating current power amplifier receive respectively ac voltage signal and the ac current signal of DAC module output, and the ac voltage signal of reception and ac current signal are transferred to respectively to step-up transformer and up-flow coil after amplifying; Described optical fiber communication modules receives the fiber-optic signal from data collector, therefrom parses action message and the involution status information of fault detector, and the action message of fault detector and involution status information upload to host computer by described DSP module.
4. distribution line failure indicator automatic checkout system according to claim 3, it is characterized in that: described DSP module is carried out the real-time calculating of 3 cross streams voltages and 3 cross streams electric currents simultaneously, and calculating in real time superpose DC component, harmonic component or high-frequency pulse string component, to produce failure voltage signal and the fault current signal under short trouble and earth-fault conditions;
The way of output of described DSP module is divided into manual output and status switch output;
Manually, under the pattern of output, can change at any time amplitude, phase place and the frequency of output signal, and the amplitude of superposed signal, phase place and frequency;
Under the pattern of status switch output, user sets in advance parameter before output, comprises output signal parameter and State-output time, and status switch has been exported rear described output-controlling device and stopped output.
5. distribution line failure indicator automatic checkout system according to claim 1, is characterized in that: described data collector comprises measurement module, data acquisition module, microprocessor module and record wave memory module; Described measurement module is transferred to described data acquisition module by the AC signal of collection; Described data acquisition module inputs to record wave memory module by the AC signal of collection, after AC signal being changed and calculated simultaneously, result of calculation is inputed to microprocessor module, and the original interchange data that gather are inputed to record wave memory module; Described microprocessor module inputs to host computer by the original AC signal of result of calculation and collection.
6. distribution line failure indicator automatic checkout system according to claim 5, is characterized in that: described measurement module comprises ac voltage measurement module and ac current measurement module, respectively ac voltage signal and ac current signal is measured.
7. distribution line failure indicator automatic checkout system according to claim 5, it is characterized in that: described record wave memory module comprises large capacity nonvolatile memory, for storing in short-term ac voltage signal, ac current signal, fault detector status information and temporal information.
8. distribution line failure indicator automatic checkout system according to claim 1, is characterized in that: described control harvester comprises intake state detection module, reception of wireless signals module, FPGA and optical fiber communication modules; Described intake state detection module detects intake signal, the corresponding contact status signal obtaining; Described reception of wireless signals module receives fault detector wireless signal, and the wireless signal receiving is resolved, and obtains fault detector action and involution status information; Described FPGA gathers contact status signal and wireless telecommunications information, by optical fiber communication modules, contact status signal and wireless telecommunications information is sent to output-controlling device, and receives the acquisition configuration order that output-controlling device is sent.
9. distribution line failure indicator automatic checkout system according to claim 8, is characterized in that: described intake signal comprises idle contact intake signal and level contact intake signal; Described contact status signal comprises idle contact status signal and level contact status signal.
10. distribution line failure indicator automatic checkout system according to claim 1, it is characterized in that: described automatic test module is controlled AC signal output, by data collector and control harvester, collect test signal, and the status information returned of fault detector, form and comprise output, feedback and the automatic checkout system of monitoring.
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| CN106483488A (en) * | 2016-10-26 | 2017-03-08 | 国网江西省电力公司电力科学研究院 | Current transformer based on ratio DC superposition method anti-DC performance detection method |
| CN108333547A (en) * | 2017-01-18 | 2018-07-27 | 中国电力科学研究院 | A kind of distribution line failure indicator automatic checkout system and method |
| CN106918763A (en) * | 2017-04-01 | 2017-07-04 | 上海紫通信息科技有限公司 | Distribution line failure simulation system |
| CN107247247A (en) * | 2017-05-31 | 2017-10-13 | 国网江西省电力公司电力科学研究院 | A kind of fault detector detection platform |
| CN107907791A (en) * | 2017-10-31 | 2018-04-13 | 国网湖南省电力公司 | A kind of automatic checkout system and detection method of distribution network failure indicator |
| CN107942196A (en) * | 2017-11-17 | 2018-04-20 | 广东电网有限责任公司电力科学研究院 | A kind of test device and method of distribution line field working conditions harvester |
| CN110208727A (en) * | 2019-07-12 | 2019-09-06 | 上海金智晟东电力科技有限公司 | Processing method, processing unit and the system of fault detector precision checking test |
| CN110456297A (en) * | 2019-09-02 | 2019-11-15 | 上海金智晟东电力科技有限公司 | A kind of fault detector test device |
| CN110515022A (en) * | 2019-09-02 | 2019-11-29 | 上海金智晟东电力科技有限公司 | A kind of power consumption test equipment |
| CN110736951A (en) * | 2019-10-31 | 2020-01-31 | 国网河北省电力有限公司电力科学研究院 | portable fault indicator detection and distribution network fault simulation device |
| CN110865276A (en) * | 2019-11-21 | 2020-03-06 | 南京能云电力科技有限公司 | Fault indicator parallel detection system and detection method |
| CN110988769A (en) * | 2019-12-04 | 2020-04-10 | 国网山东省电力公司青州市供电公司 | Portable distribution line fault indicator acquisition unit tester and testing method |
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