CN103197184A - Fault wave recording device with impact load considered - Google Patents
Fault wave recording device with impact load considered Download PDFInfo
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- CN103197184A CN103197184A CN 201310115032 CN201310115032A CN103197184A CN 103197184 A CN103197184 A CN 103197184A CN 201310115032 CN201310115032 CN 201310115032 CN 201310115032 A CN201310115032 A CN 201310115032A CN 103197184 A CN103197184 A CN 103197184A
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Abstract
A fault wave recording device with impact load considered comprises a wave recording data collecting unit, a wave recording data processing unit and a wave recording communication unit. The wave recording data collecting unit comprises a voltage-current mutual inductor, a field programmable gate array (FPGA) and an analog-digital converter, wherein the voltage-current mutual inductor is used for collecting wave recording data; a signal output end of the analog-digital converter is connected with a signal input end of the FPGA; a signal output end of the FPGA is connected with an analog signal input end of the analog-digital converter; a digital signal output end of the analog-digital converter serves as output of the wave recording data collecting unit to be connected with a signal input end of the wave recording data processing unit; a signal output end of the wave recording data processing unit is connected with a signal input end of the wave recording communication unit; and the wave recording communication unit is communicated with a remote control master station. The fault wave recording device with impact load considered improves a traditional fault wave recording device, is simple, effective and comprehensive in recorded data and gives consideration to data monitoring of the impact load.
Description
Technical field
The present invention relates to a kind of fault wave recording device of considering impact load, specifically relates to the new device that common load and impact load service data contained in a kind of record.
Background technology
Intelligent grid is the developing direction of Future Power System, and the intellectuality of transformer station is the basic premise of realizing intelligent grid.In the construction of intelligent transformer station, the accuracy and the real-time that improve the data message of primary equipment and secondary device seem particularly important.For this reason, at present the electrical network installation and operation a large amount of information measurement collector and fault locators, fault wave recording device is exactly wherein a kind of.
Fault wave recording device is a kind ofly to put the aut.eq. of real time monitoring operation states of electric power system into operation throughout the year.Its major function is when the system of being monitored breaks down, going out system according to the analysis and judgement of acquisition channel breaks down, and the voltage of the whole process in record trouble front and back, the state of each monitoring target such as electric current provides important data basis for analyzing electric power system fault.
Impact load traditionally is mainly with the ferrosilicon electric arc furnaces, and electrolytic aluminium etc. are main, and along with power system development, a large amount of new impact loads begin to occur, and serves as main representative with electric automobile and city underground light rail wherein.Compare with common load, the impact load start and stop are frequent, have impact, and institute's node voltage of doing changes little, and load capacity is bigger, and power swing is bigger, needs the transformation of electrical energy device, have potential disturbance to threaten to electric system.Characteristic at these impact loads, the start-up criterion of traditional fault wave recording device be not suitable for, and then can not effectively comprehensively record service data or the noisy data of monitored system, need to adopt new method and apparatus to monitor and measure the operation of impact load, for the further investigation of impact load provides important data source support for this reason.
Summary of the invention
The objective of the invention is to remedy the deficiency of traditional fault wave recording device, for the electric system that comprises impact loads such as electric arc furnaces, electrolytic aluminium or urban light rail, rely on the ultimate principle of traditional fault wave recording device, design a kind of new fault wave recording device for the electric load fields of measurement, make its service data information that can either record common load can record the service data information of impact load again separately.This device is simple, and effectively record data are comprehensive, can long-time running, have good application prospects.
In order to solve the problems of the technologies described above, the present invention is achieved through the following technical solutions:
A kind of fault wave recording device of considering impact load, comprise the recorder data collecting unit, recorder data processing unit and record wave communication unit, described recorder data collecting unit comprises voltage, current transformer, field programmable gate array FPGA and analog to digital converter, described voltage, current transformer links to each other with the end of incoming cables of station service transformer as the signals collecting end of the fault wave recording device of considering impact load, be used for gathering recorder data, described voltage, the signal output part of current transformer links to each other with the signal input part of field programmable gate array FPGA, the signal output part of field programmable gate array FPGA links to each other with the input end of analog signal of analog to digital converter, the digital signal output end of analog to digital converter links to each other with the signal input part of recorder data processing unit as the output of recorder data collecting unit, the signal output part of recorder data processing unit links to each other with the signal input part of record wave communication unit, and described record wave communication unit and Long-distance Control main website communicate.
Recorder data processing unit of the present invention comprises device when bus, digital signal processor DSP and GPS are, described digital signal processor DSP links to each other by the output terminal of bus with the recorder data collecting unit, and the signal output part of device linked to each other when described digital signal processor DSP was with GPS.
The present invention records the wave communication unit and comprises arm processor.
Connect by the first dual port RAM storer between recorder data collecting unit of the present invention and the recorder data processing unit, the output signal of described recorder data collecting unit is stored to the first dual port RAM storer, and the recorder data processing unit reads aforementioned data and handles; By connecting by the second dual port RAM storer, the output signal of described recorder data processing unit is stored to the second dual port RAM storer between recorder data processing unit and the record wave communication unit, and record wave communication unit reads aforementioned data and handles.
Analog to digital converter of the present invention adopts 16 analog to digital converters.
In the recorder data processing unit of the present invention, the treatment step of digital signal processor DSP is as follows:
(1), the step of data read: digital signal processor DSP reads the voltage of recorder data collecting unit collection, the digital signal of electric current;
(2), the determining step that whether breaks down: main phase voltage and the out-of-limit start-up criterion that designs of phase current of adopting of the record ripple part of common load.The variation range of voltage and current surpasses or is lower than 10% of voltage rating and electric current steady-state value, namely thinks fault to start the record ripple.
The mode that the record ripple of impact load partly adopts jump-value of current and chugging amount to combine designs start-up criterion, at first detect jump-value of current and whether satisfy predetermined condition, if satisfy, then continue detection power sudden change amount and whether satisfy, if the two all satisfies, then start impact load record ripple.Specific as follows, in the process of image data, the difference of the neighbouring sample value of definition electric current is the changing value of electric current, and the difference of two adjacent electric current changing values is the sudden change amount of electric current.If the sudden change amount of electric current surpasses or is lower than 15% of electric current steady-state value, think that namely current break satisfies entry condition, the definition of the sudden change amount of active power and current capacity are seemingly, when the sudden change amount of meritorious power surpass or be lower than active power steady-state value 15%, think that namely active power sudden change satisfies entry condition, if the two satisfies simultaneously, then start impact load record ripple.
(3), the step of storage recorder data: recorder data is stored in the second dual port RAM storer, and whether the failure judgement disturbance finishes again, determines whether continue to start the record ripple, if the fault disturbance finishes, then return and read image data, repeat, all finish until data read.
Compared with prior art, the invention has the beneficial effects as follows:
1, improve on the basis of traditional fault wave recording device, save cost, simple.
2, at the characteristic of impact load, the mode that adopts phase current sudden change and chugging to combine designs the start-up criterion of wave recording device, realizes monitoring and the measurement of impact load service data.
3, adopt new communication plan, abandon the PC level two of existing wave recording device, avoided the process of host computer transmission data, improved transmission speed, improved safe reliability and the anti-interference of uploading data.
Description of drawings
Fig. 1 is a kind of structural drawing of considering the fault wave recording device of impact load of the present invention
Fig. 2 is the process flow diagram of DSP record ripple start-up criterion algorithm
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail:
As shown in Figure 1, a kind of fault wave recording device employing distributed frame form of considering impact load is made of recorder data collecting unit, recorder data processing unit and record wave communication unit.
The recorder data collecting unit mainly is made up of signal conditioning circuit and analog to digital conversion circuit, can obtain analog quantitys such as voltage and current by power equipments such as voltage transformer (VT) summation current transformers, these analog quantitys are sent into signal conditioning circuit carry out processing such as filtering and isolated variable, analog quantity after will handling is again sent into 16 analog to digital converters (A/D) 2 and is converted into digital signal, wherein in order to realize synchronized sampling efficiently, introduce control array able to programme (FPGA) 1 and carry out programming Control, produce certain control sequential, control multi-channel analog change-over switch, realize sharing same sampling and keep the purpose of amplification and A/D change-over circuit.The collection of switching value has certain difference with analog quantity, and the switching value of collection is at first carried out the photoelectricity isolation by preposition sense channel, inserts 16 ternary data collectors then, has so just obtained the digital signal that can upload.Gather and obtain after the digital signal, store these digital signals by FPGA software control high speed dual port RAM storer 3, signal is sent into the recorder data processing unit then.
The recorder data processing unit is the core of fault wave recording device, mainly by bus 4, digital signal processor (DSP) 5 and to the time device constitute 6, DSP is as master cpu, device provides under the prerequisite of time synchronized when GPS is, adopt the interruption form to realize the control that recorder data is gathered, namely realize reading in the data of high speed dual port RAM storer.Data enter DSP and carry out analyzing and processing, comprise digital filtering, phase sequence decomposition transform, calculate each road effective value etc. in real time, and make and whether record judgement that ripple starts and whether data a series of processing such as are preserved and upload, if the record ripple starts, recorder data still adopts high speed dual port RAM storer 7 to store temporarily.
Recorder data needs to upload data to distant place controlling center after preserving, and this function can be realized in high efficient and reliable ground in record wave communication unit.Record wave communication unit mainly is made of ARM microprocessor 8, employing is based on the network communications scheme of ethernet local area network, adopt independently ARM control network card chip realization ICP/IP protocol network service at master control borad, finish the data upload work between record wave device and the distant place controlling center.
As shown in Figure 2, this flow chart description the design process of DSP record ripple start-up criterion algorithm.At first carry out DSP and start initialization and program initialization, read image data, the log-on data Treatment Analysis, the judgement of whether breaking down, determine to start the failure wave-recording of common load and the failure wave-recording of impact load, the record wave process of impact load is that chugging and phase current sudden change stack are considered to design record ripple start-up criterion, at first detect jump-value of current and whether satisfy predetermined condition, if satisfy, whether then continue detection power sudden change amount satisfies, if the two all satisfies, then start impact load record ripple, at the record wave process of common load, adopt phase voltage and phase current sudden change principle to design record ripple start-up criterion, record the similar of ripple start-up course and impact load.No matter the record ripple of which kind of load form starts, and then with the recorder data reliable memory, whether the failure judgement disturbance finishes again, determines whether to continue to start the record ripple, if the fault disturbance finishes, then return and read image data, repeat, all finish until data read.
Control array able to programme (FPGA) 1 A42MX09 as Actel company that the present invention uses, digital signal processor (DSP) 5 is TMS320F2812,16 analog to digital converters (A/D) 2 are the MAX1189 of MAXIM company, and high speed dual port RAM storer 3 and 7 is CY7C024AV.
The undeclared part that relates among the present invention is same as the prior art or adopt prior art to be realized.
Claims (7)
1. fault wave recording device of considering impact load, comprise the recorder data collecting unit, recorder data processing unit and record wave communication unit, described recorder data collecting unit comprises voltage, current transformer, field programmable gate array FPGA and analog to digital converter, described voltage, current transformer links to each other with the end of incoming cables of station service transformer as the signals collecting end of the fault wave recording device of considering impact load, be used for gathering recorder data, described voltage, the signal output part of current transformer links to each other with the signal input part of field programmable gate array FPGA, the signal output part of field programmable gate array FPGA links to each other with the input end of analog signal of analog to digital converter, the digital signal output end of analog to digital converter links to each other with the signal input part of recorder data processing unit as the output of recorder data collecting unit, the signal output part of recorder data processing unit links to each other with the signal input part of record wave communication unit, and described record wave communication unit and Long-distance Control main website communicate.
2. a kind of fault wave recording device of considering impact load according to claim 1, it is characterized in that described recorder data processing unit comprises device when bus, digital signal processor DSP and GPS are, described digital signal processor DSP links to each other by the output terminal of bus with the recorder data collecting unit, and the signal output part of device linked to each other when described digital signal processor DSP was with GPS.
3. a kind of fault wave recording device of considering impact load according to claim 1 is characterized in that described record wave communication unit comprises arm processor.
4. a kind of fault wave recording device of considering impact load according to claim 1, it is characterized in that connecting by the first dual port RAM storer between described recorder data collecting unit and the recorder data processing unit, the output signal of described recorder data collecting unit is stored to the first dual port RAM storer, and the recorder data processing unit reads aforementioned data and handles; By connecting by the second dual port RAM storer, the output signal of described recorder data processing unit is stored to the second dual port RAM storer between recorder data processing unit and the record wave communication unit, and record wave communication unit reads aforementioned data and handles.
5. a kind of fault wave recording device of considering impact load according to claim 1 is characterized in that described analog to digital converter adopts 16 analog to digital converters.
6. a kind of fault wave recording device of considering impact load according to claim 1 is characterized in that the treatment step of digital signal processor DSP is as follows in the described recorder data processing unit:
(1), the step of data read: digital signal processor DSP reads the voltage of recorder data collecting unit collection, the digital signal of electric current;
(2), the determining step that whether breaks down: setting voltage ratings, electric current steady-state value, jump-value of current and chugging amount; If the voltage and current of gathering surpasses or is lower than 10% of voltage rating and electric current steady-state value in real time, namely think the fault disturbance to start the record ripple;
The mode that the record ripple of impact load partly adopts jump-value of current and chugging amount to combine designs start-up criterion, at first detect jump-value of current and whether satisfy predetermined condition, if satisfy, then continue detection power sudden change amount and whether satisfy, if the two all satisfies, then start impact load record ripple;
(3), the step of storage recorder data: recorder data is stored in the second dual port RAM storer, and whether the failure judgement disturbance finishes again, determines whether continue to start the record ripple, if the fault disturbance finishes, then return and read image data, repeat, all finish until data read.
7. a kind of fault wave recording device of considering impact load according to claim 6, it is characterized in that in the step (2): in the process of image data, the difference of the neighbouring sample value of definition electric current is that the changing value of electric current is that the difference of two adjacent electric current changing values is the sudden change amount of electric current; If the sudden change amount of electric current surpasses or is lower than 15% of electric current steady-state value, think that namely current break satisfies entry condition, the definition of the sudden change amount of active power and current capacity are seemingly, when the sudden change amount of meritorious power surpass or be lower than active power steady-state value 15%, think that namely active power sudden change satisfies entry condition, if the two satisfies simultaneously, then start impact load record ripple.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201310115032 CN103197184A (en) | 2013-04-03 | 2013-04-03 | Fault wave recording device with impact load considered |
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| CN 201310115032 CN103197184A (en) | 2013-04-03 | 2013-04-03 | Fault wave recording device with impact load considered |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104090187A (en) * | 2014-07-15 | 2014-10-08 | 浙江群力电气有限公司 | Ring main unit electrical capacity collecting and fault recording device |
| WO2015043456A1 (en) * | 2013-09-24 | 2015-04-02 | 许继电气股份有限公司 | High-voltage direct-current transmission converter valve control device and oscillation recording monitoring system thereof |
| CN107167682A (en) * | 2017-05-17 | 2017-09-15 | 希望森兰科技股份有限公司 | The wave recording device of high voltage converter |
| CN108132419A (en) * | 2017-12-06 | 2018-06-08 | 福建奥通迈胜电力科技有限公司 | Simple power distribution network active failure analysis method based on current break Information Matrix |
| CN110932623A (en) * | 2019-12-02 | 2020-03-27 | 杭州和利时自动化有限公司 | Servo control circuit with configurable voltage and current |
| CN114638552A (en) * | 2022-04-22 | 2022-06-17 | 国网浙江省电力有限公司营销服务中心 | Impact load identification method based on reference day-minute-scale curve and sliding window |
-
2013
- 2013-04-03 CN CN 201310115032 patent/CN103197184A/en not_active Withdrawn
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015043456A1 (en) * | 2013-09-24 | 2015-04-02 | 许继电气股份有限公司 | High-voltage direct-current transmission converter valve control device and oscillation recording monitoring system thereof |
| CN104090187A (en) * | 2014-07-15 | 2014-10-08 | 浙江群力电气有限公司 | Ring main unit electrical capacity collecting and fault recording device |
| CN107167682A (en) * | 2017-05-17 | 2017-09-15 | 希望森兰科技股份有限公司 | The wave recording device of high voltage converter |
| CN108132419A (en) * | 2017-12-06 | 2018-06-08 | 福建奥通迈胜电力科技有限公司 | Simple power distribution network active failure analysis method based on current break Information Matrix |
| CN108132419B (en) * | 2017-12-06 | 2020-12-08 | 福建奥通迈胜电力科技有限公司 | Simple power distribution network active fault studying and judging method based on current mutation information array |
| CN110932623A (en) * | 2019-12-02 | 2020-03-27 | 杭州和利时自动化有限公司 | Servo control circuit with configurable voltage and current |
| CN114638552A (en) * | 2022-04-22 | 2022-06-17 | 国网浙江省电力有限公司营销服务中心 | Impact load identification method based on reference day-minute-scale curve and sliding window |
| CN114638552B (en) * | 2022-04-22 | 2022-09-02 | 国网浙江省电力有限公司营销服务中心 | Impact load identification method based on reference day-minute-scale curve and sliding window |
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Application publication date: 20130710 |