CN104215878B - A kind of distribution line fault wave recording device and its failure wave-recording method - Google Patents
A kind of distribution line fault wave recording device and its failure wave-recording method Download PDFInfo
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Abstract
The invention discloses a kind of distribution line fault wave recording device, dma module, non-volatile memory device and Liang Ge Circular buffers area are included.The invention also discloses a kind of failure wave-recording method.The present invention is in power system fault-free or generation without exception, and the data of collection are temporarily stored into a Circular buffer area in the case where intervening without CPU, effectively save CPU memory headrooms；When line fault or when detecting misoperation, fault data points to another Circular buffer area newly opened up from the Circular buffer area, valid data are avoided to be capped, time enough has been reserved for CPU Broadcast Fault information, Double buffer periodically switches simultaneously, it is to avoid complicated data boundary processing operation.
Description
Technical field
It is more particularly to a kind of slow based on Crossed Circle the present invention relates to system for distribution network of power line fault testing device and method
The distribution line fault wave recording device and method deposited.
Background technology
Fault wave recording device is energy self registering a kind of device when power system is broken down and vibrated, and be can record because short
System power, voltage and its derived quantity caused by the large disturbances such as road failure, system oscillation, collapse of frequency, collapse of voltage, if any
Work(, idle and system frequency overall process variation phenomenon.When power system is broken down, the data of fault wave recording device record
For analyzing failure cause, monitoring relay protection and the operation of automatic safety device and the whole course for observing fault progression,
It is the important evidence for avoiding similar accident from occurring again.When an error occurs, failure can be determined rapidly using wave-record chart
Type and separate, calculating is out of order approximate location, so as to reduce seeking scope, reduces hand labor intensity.Quickly find failure
Point, fixes a breakdown, and is also beneficial to restore electricity in time, reduces economic loss.
For supply and distribution network, the power consumption of fault wave recording device typically requires to be not more than 350mW, therefore controller on circuit
CPU is under restrictive condition low in energy consumption, and memory size is typically small.With reference to《DL/T55394220-500kV electric power system faults
Dynamically recording technical criteria》, fault data recorder start by system large disturbances before status data, initial stage after system large disturbances
The dynamic data five of the status data of mid-term, system dynamic course data, system growth process after status data, system large disturbances
Period is operated.Once generation is abnormal, fault wave recording device record information amount is big, when gathered data is constantly updated, and uses
Buffer area is continuously increased mode, and cpu system memory source can be made constantly to be consumed, when memory consumption totally when, CPU element will collapse
Burst；When gathered data is constantly updated, by the way of fixed size buffer area, circuit A, B, C are alternate when hindering for some reason or be abnormal
Communication has a fixed response time, it may occur that the capped situation of valid data；Using single annular cache way, need frequently to data boundary
Operated, implementation process is more complicated, it is impossible to ensure the completeness and efficiency of data.
The content of the invention
In view of the above-mentioned problems, the goal of the invention of the present invention is to provide a kind of distribution line fault wave recording device, Ji Nengzhi
Big data quantity uninterrupted sampling is held, while do not limited by CPU memory headrooms again.
A kind of distribution line fault wave recording device, includes dma module, non-volatile memory device and two Circular buffers
Area, the dma module includes initialization module, reading instruction module, write command module.
The initialization module initializes DMA moulds when power system is broken down and when fault data recorder is complete
Block, the master slave relation in change Liang Ge Circular buffers area, the Circular buffer area for being originally intended to data storage is changed to from Circular buffer area, separately
One Circular buffer area is changed to main loop buffer area.
The write command module preserves destination address when initializing dma module, by voltage, current waveform data and points to master
Circular buffer area；When recording fault data, when if main loop buffer area is full, fault data does not record complete, write command
Voltage, current waveform data are then preserved destination address and switched in main loop buffer area, between Circular buffer area by module.
The reading instruction module initialize dma module when, by voltage, current waveform data read destination address point to from
Circular buffer area；When recording fault data, when if main loop buffer area is full, fault data does not record complete, reading instruction
Voltage, current waveform data are then read destination address and switched in main loop buffer area, between Circular buffer area by module.
The Circular buffer area stores voltage, current waveform data according to the control of write command module.
The non-volatile memory device reads voltage, current wave in annular buffer area according to the control of reading instruction module
Graphic data.
Further, the dma module also includes long-range sending module, for reading this event from nonvolatile memory
Hinder recorder data, encapsulation of data frame is sent to master station by GPRS/SMS.
Further, two one-dimension arrays are opened up in the Circular buffer area, voltage and current Wave data is stored respectively.
Further, the write command module points to the start bit in Circular buffer area when pointing to Circular buffer area.
Further, voltage, current waveform data are read target by the reading instruction module when power system is broken down
Initial address is set to X cycle of status data before disturbing, and the X is the positive integer not less than 2.
Another object of the present invention is to provide a kind of failure wave-recording method, comprise the steps of：
1) dma module is initialized, and sets main loop buffer area and from Circular buffer area, voltage, current waveform data are protected
Deposit destination address and point to main loop buffer area, electric current, voltage waveform data write-in main loop buffer area.
2) when power system is broken down, dma module is reinitialized, and the Circular buffer area of former data storage is changed to from ring
Shape buffer area, another Circular buffer area is changed to main loop buffer area, and voltage, current waveform data are preserved into destination address points to master
Circular buffer area, the voltage hereafter gathered, current waveform data write-in main loop buffer area.
3) voltage, current waveform data are read destination address and pointed to from Circular buffer area by dma module, are read slow from annular
Deposit the voltage before being disturbed in area, current waveform data and be stored in non-volatile memory device.
4) when data write the border of main loop buffer area, whether failure judgement data preserve completely, preserve imperfect
Go to step 5), preservation completely goes to step 6).
5) voltage, current data are preserved destination address and pointed to from Circular buffer area, the voltage hereafter gathered, current waveform
Data are written to from Circular buffer area, and voltage, current waveform data, which read destination address and point to main loop buffer area and read, to be owned
Data are stored in non-volatile memory device；When data are write from the border in Circular buffer area, whether failure judgement data preserve
Completely, if preserving imperfect by voltage, current data preservation destination address sensing main loop buffer area, the voltage hereafter gathered,
Current waveform data is written to main loop buffer area, and voltage, current waveform data read destination address and pointed to from Circular buffer area
Read all data and be stored in non-volatile memory device, repeat this step, until fault data preserves complete.
6) dma module is reinitialized, and main loop buffer area is reset and from Circular buffer area, by voltage, electric current number
Dominant shape buffer area is pointed to according to destination address is preserved, the voltage hereafter gathered, current waveform data are written to main loop buffer area；Electricity
Pressure, current waveform data read destination address sensing and are stored in non-volatile memory device from Circular buffer area all data of reading.
7) occur in power system before new exception, main loop buffer area keeps in Wave data in Circular buffer form.
8) this fault recorder data is read from nonvolatile memory, encapsulation of data frame is sent to by GPRS/SMS
Master station, this failure wave-recording is completed；
Further, the step 1) in when writing the border of main loop buffer area, dma module is intervened in no CPU
In the case of since start bit write, when power system does not have abnormal conditions, this process is circulated in Circular buffer form.
Further, the step 3) in the latest positions of data is preserved according to first annular buffer area, read slow from annular
Deposit X cycle of status data before being disturbed in area and be stored in non-volatile memory device, the positive integer for not X less than 2.
Further, two one-dimension arrays are opened up in the Circular buffer area, voltage and current Wave data is stored respectively.
In summary, the present invention is in circuit fault-free or generation without exception, and the data of collection are in the feelings intervened without CPU
A Circular buffer area is temporarily stored under condition, CPU memory headrooms are effectively saved；When line fault or when detecting misoperation, therefore
Hinder data and point to another Circular buffer area newly opened up from the Circular buffer area, it is to avoid valid data are capped, and are CPU broadcast
Fault message has reserved time enough, while Crossed Circle caching period property switches, it is to avoid complicated data boundary processing behaviour
Make.When fault message is all stored to nonvolatile memory in Circular buffer area, the Circular buffer area is discharged, is that CPU is held
Row follow-up work provides sufficient space.Based on Crossed Circle cache distribution line failure wave-recording method, realize data not between
Disconnected collection, it is ensured that the integrality and availability of main website service platform received data, while having occupancy cpu system internal memory money
Source is few, the characteristics of recurrence of failure effect is good.
Brief description of the drawings
Fig. 1 is a kind of structural representation of fault wave recording device of the invention.
Fig. 2 is the split-phase type structural representation in the embodiment of the present invention.
Fig. 3 is Crossed Circle caching current working mode schematic diagram in the embodiment of the present invention.
Fig. 4 is Crossed Circle caching voltage operation mode schematic diagram in the embodiment of the present invention.
Fig. 5 is a kind of workflow schematic diagram of failure wave-recording method of the invention.
Embodiment
Inventive method is elaborated with reference to the accompanying drawings and examples：This gives detailed embodiment
With specific operating process, but protection scope of the present invention is not limited to following embodiments.
It is described in embodiments of the present invention by taking distribution line fault wave recording device as an example, as shown in figure 1, the present invention is main
To include comprising dma module, non-volatile memory device and Liang Ge Circular buffers area, in dma module comprising initialization module, read
Instruction module, write command module.
The initialization module initializes DMA moulds when power system is broken down and when fault data recorder is complete
Block, the master slave relation in change Liang Ge Circular buffers area, the Circular buffer area for being originally intended to data storage is changed to from Circular buffer area, separately
One Circular buffer area is changed to main loop buffer area.
The write command module preserves destination address when initializing dma module, by voltage, current waveform data and points to master
Circular buffer area；When recording fault data, when main loop buffer area is full and fault data does not record complete if by electricity
Pressure, current waveform data preserve destination address and switched in main loop buffer area, between Circular buffer area.
The reading instruction module initialize dma module when, by voltage, current waveform data read destination address point to from
Circular buffer area；When recording fault data, when main loop buffer area is full and fault data does not record complete if by electricity
Pressure, current waveform data read destination address and switched in main loop buffer area, between Circular buffer area.
The Circular buffer area stores voltage, current waveform data according to the control of write command module.
The non-volatile memory device reads voltage, current wave in annular buffer area according to the control of reading instruction module
Graphic data.
Data between the description of technical background, A, B, C three-phase data acquisition terminal and main website service platform are passed
Defeated completeness and efficiency is particularly important.The working condition of fault wave recording device is briefly introduced, as shown in Fig. 2 A, B, C three-phase are filled
Synchronous acquisition line current, voltage are put, it is uninterrupted in data acquisition if any phase device monitoring is to line fault or occurs exception
In the case of broadcast message is confirmed after Broadcast Fault information frame, a fixed response time between three-phase installation by Zigbee radio communications
Send successfully.After fault data is preserved completely, three-phase data is summarized in by Zigbee communication and is equipped with GPRS communication modules
Device phase, main website service platform is uploaded to by GPRS/SMS, on main website service platform carry out data analysis, fault location
Deng follow-up work.
As shown in figure 5, being the flow chart of failure wave-recording method of the present invention, for ease of illustrating the implementation of the present invention
Journey, to two Circular buffer areas respectively with first annular buffering area, the second buffer circle is indicated, first annular buffering
The start bit in area is A points, and the start bit of the second buffer circle is D points, such as Fig. 3, and shown in Fig. 4, the present embodiment includes：
(1) two one-dimension arrays are opened up respectively in Liang Ge Circular buffers area as caching to store voltage, current waveform
Gathered data.During system initial launch, signal often gathers completion once, and the write command module of CPU element dma module is by electricity
Pressure, current waveform data preserve destination address and point to first annular buffer area, and now first annular buffer area is main Circular buffer
Area, electric current, voltage waveform data write first annular buffer area, and data are preserved in first annular buffer area since A points.
(2) when writing the i.e. one-dimension array subscript maximum in border of first annular buffer area, dma module is in no CPU
Write in the case of intervention since A points, when circuit does not have abnormal conditions, circulate this process.
(3) when system is detected in B points, circuit is abnormal, and initialization module is reinitialized to dma module, write command module
Voltage, current data are preserved into destination address and are respectively directed to the second Circular buffer area, now the second Circular buffer area is main loop
Buffer area, the voltage hereafter gathered, current waveform data are written to the second Circular buffer area, and from the second Circular buffer area
Starting D points start to preserve.
(4) voltage, current waveform data are read destination address and point to first annular buffer area by reading instruction module, according to the
One Circular buffer area preserve data latest position and《DL/T55394220-500kV electric power system fault dynamically recording technologies
Criterion》Status data requirement before middle system large disturbances start sets read range, and non-volatile memory device reads the first ring
X cycle of status data (X is not less than 2) is the data between figure midpoint C and point B before being disturbed in shape buffer area, discharges the first ring
Shape buffer space, regard first annular buffer area as standby buffer area.
(5) when data write the border in the second Circular buffer area, whether failure judgement data preserve completely.
(6) if fault data preserves imperfect, voltage, current data is preserved into destination address and point to first annular caching
Area, the voltage hereafter gathered, current waveform data are written to first annular buffer area, and from the starting A of first annular buffer area
Point starts to preserve.Voltage, all data of current waveform data reading destination address sensing the second Circular buffer area reading are stored in non-
Volatile storage devices；When data write the border of first annular buffer area, whether failure judgement data preserve completely, if protecting
Deposit imperfect by voltage, the second Circular buffer area of current data preservation destination address sensing, the voltage hereafter gathered, current waveform
Data are written to the second Circular buffer area, and are preserved since the starting D points in the second Circular buffer area.Voltage, current wave figurate number
Non-volatile memory device is stored according to all data of the first annular buffer area reading of destination address sensing are read, this step is repeated
Suddenly, until fault data preserves complete.
(7) in step (5), completely it is not required to continue wave recording if fault data is preserved, dma module is reinitialized,
Voltage, current data are preserved destination address and are respectively directed to first annular buffer area by write command module, now first annular caching
Area is main Circular buffer area, and the voltage hereafter gathered, current waveform data are written to first annular buffer area, and from first annular
The starting A points of buffer area start to preserve.Voltage, current waveform data are read destination address and point to the second annular by reading instruction module
Buffer area, reads all data in the second Circular buffer area and is stored in non-volatile memory device, the second Circular buffer area of release is empty
Between.Circuit is before there is new exception, and first annular buffer area keeps in Wave data in Circular buffer form.From non-volatile
This fault recorder data is read in memory, encapsulation of data frame is sent to master station by GPRS/SMS, the record of this failure
Ripple is completed.
Claims (10)
1. a kind of distribution line fault wave recording device, comprising dma module, non-volatile memory device and Liang Ge Circular buffers area,
It is characterized in that the dma module includes initialization module, reading instruction module, write command module；
The initialization module initializes dma module when power system is broken down and when fault data recorder is complete, more
The master slave relation in Gai Liangge Circular buffers area, the Circular buffer area for being originally intended to data storage is changed to from Circular buffer area, Ling Yihuan
Shape buffer area is changed to main loop buffer area；
The write command module preserves destination address when initializing dma module, by voltage, current waveform data and points to main loop
Buffer area；When recording fault data, when if main loop buffer area is full, fault data does not record complete, the write command
Voltage, current waveform data are then preserved destination address and switched in main loop buffer area, between Circular buffer area by module；
Voltage, current waveform data are read destination address and pointed to from annular by the reading instruction module when initializing dma module
Buffer area；When recording fault data, when if main loop buffer area is full, fault data does not record complete, the reading instruction
Voltage, current waveform data are then read destination address and switched in main loop buffer area, between Circular buffer area by module；
The Circular buffer area stores voltage, current waveform data according to the control of write command module；
The non-volatile memory device reads voltage in annular buffer area, current wave figurate number according to the control of reading instruction module
According to.
2. distribution line fault wave recording device according to claim 1, it is characterised in that the dma module is also comprising long-range
Sending module, the long-range sending module is used to read this fault recorder data from non-volatile memory device, encapsulates number
Master station is sent to by GPRS/SMS according to frame.
3. distribution line fault wave recording device according to claim 1, it is characterised in that opened up in the Circular buffer area
Two one-dimension arrays, store voltage and current Wave data respectively.
4. distribution line fault wave recording device according to claim 1, it is characterised in that the write command module is being pointed to
During Circular buffer area, the start bit in Circular buffer area is pointed to.
5. distribution line fault wave recording device according to claim 1, it is characterised in that the reading instruction module is in electric power
Voltage, current waveform data are read into target initial address during system jam and are set to X cycle of status data before disturbing,
The X is the positive integer not less than 2.
6. using the failure wave-recording method of any described distribution line fault wave recording device of claim 1 to 5, include following step
Suddenly：
1) dma module is initialized, and sets main loop buffer area and from Circular buffer area, voltage, current waveform data are preserved into mesh
Mark address and point to main loop buffer area, voltage, current waveform data write-in main loop buffer area；
2) when power system is broken down, dma module is reinitialized, and the main loop buffer area of former data storage is changed to from annular
Buffer area, another Circular buffer area is changed to main loop buffer area, and voltage, current waveform data are preserved into destination address points to main ring
Shape buffer area, the voltage hereafter gathered, current waveform data write-in main loop buffer area；
3) voltage, current waveform data are read destination address and pointed to from Circular buffer area by dma module, are read from Circular buffer area
Voltage, current waveform data before middle disturbance are stored in non-volatile memory device；
4) when data write the border of main loop buffer area, whether failure judgement data preserve completely, preserve imperfect go to
Step 5), preservation completely goes to step 6)；
5) voltage, current waveform data are preserved destination address and pointed to from Circular buffer area, the voltage hereafter gathered, current waveform
Data are written to from Circular buffer area, and voltage, current waveform data, which read destination address and point to main loop buffer area and read, to be owned
Data are stored in non-volatile memory device；When data are write from the border in Circular buffer area, whether failure judgement data preserve
Completely, if preserving imperfect by voltage, current waveform data preservation destination address sensing main loop buffer area, the electricity hereafter gathered
Pressure, current waveform data are written to main loop buffer area, and voltage, current waveform data read destination address and pointed to from Circular buffer
Area reads all data and is stored in non-volatile memory device, repeats this step, until fault data preserves complete；
6) dma module is reinitialized, and main loop buffer area is reset and from Circular buffer area, by voltage, current wave figurate number
Main loop buffer area is pointed to according to destination address is preserved, the voltage hereafter gathered, current waveform data are written to main loop buffer area；
Voltage, current waveform data reading destination address sensing are stored in non-volatile memories from Circular buffer area all data of reading and set
It is standby；
7) occur in power system before new exception, main loop buffer area keeps in Wave data in Circular buffer form.
7. failure wave-recording method according to claim 6, it is characterised in that also comprising step 8), set from non-volatile memories
Standby middle this fault recorder data of reading, encapsulation of data frame is sent to master station by GPRS/SMS, and this failure wave-recording is complete
Into.
8. failure wave-recording method according to claim 7, it is characterised in that the step 1) in when voltage, current wave figurate number
During according to the border for writing main loop buffer area, dma module writes in the case where no CPU intervenes since start bit, in electricity
When Force system does not have abnormal conditions, this process is circulated in Circular buffer form.
9. failure wave-recording method according to claim 7, it is characterised in that the step 3) according to from Circular buffer area
The latest position of data is preserved, X cycle of status data is stored in non-volatile memories and set before reading is disturbed from Circular buffer area
Standby, the X is the positive integer not less than 2.
10. failure wave-recording method according to claim 7, it is characterised in that opened up in the Circular buffer area two it is one-dimensional
Array, stores voltage and current Wave data respectively.
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| CN104991981B (en) * | 2015-01-15 | 2019-02-22 | 国家电网公司 | Multifile source failure wave-recording playback system and method based on high-performance processor |
| CN104808116A (en) * | 2015-05-11 | 2015-07-29 | 毕节供电局 | Line fault location method for distribution network based on GPRS (General Packet Radio Service) / SMS (Short Messaging Service) mixed communication |
| CN106291394A (en) * | 2015-05-19 | 2017-01-04 | 上海航天有线电厂有限公司 | The real-time Wave record method of fault moment of a kind of Modular UPS and system |
| CN105911899B (en) * | 2015-09-28 | 2018-07-06 | 西门子制造工程中心有限公司 | Rail potential limits and waveform recording device and method |
| CN105676023B (en) * | 2015-12-30 | 2019-03-29 | 华自科技股份有限公司 | The recording method and system of fault recorder data |
| CN107589320B (en) * | 2016-07-08 | 2021-01-26 | 台达电子企业管理（上海）有限公司 | Wave recording method and wave recording device of power module |
| CN108628979B (en) * | 2018-04-26 | 2021-02-09 | 广州供电局有限公司 | Power failure record issuing method, system, computer equipment and storage medium |
| CN108767806A (en) * | 2018-05-28 | 2018-11-06 | 国网辽宁省电力有限公司电力科学研究院 | The integrated hardware platform and processing method of integrated relay protection, observing and controlling and recording function |
| CN111654425B (en) * | 2020-08-04 | 2020-10-30 | 北京和利时系统工程有限公司 | Fault recording information acquisition method based on Modbus protocol and related equipment |
| CN112052243B (en) * | 2020-09-08 | 2021-05-14 | 贵州乌江水电开发有限责任公司东风发电厂 | Continuous waveform recording method based on database technology |
| CN112305458B (en) * | 2020-12-30 | 2021-04-16 | 南京斯泰恩智慧能源技术有限公司 | Wave recording type platform area residual current detection terminal and early warning system |
| CN116743948A (en) * | 2023-06-15 | 2023-09-12 | 上海山源电子科技股份有限公司 | Method, device and equipment for monitoring video recording and computer readable storage medium |
| CN117647745A (en) * | 2023-12-01 | 2024-03-05 | 青岛艾诺仪器有限公司 | Battery micro-short circuit data acquisition method based on annular buffer |
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| FI103440B1 (en) * | 1995-11-02 | 1999-06-30 | Nokia Telecommunications Oy | Securing data storage in a tape drive with buffer memory |
| CN101777796A (en) * | 2010-01-15 | 2010-07-14 | 合肥工业大学 | DSP (Digital Signal Processor)-based distributed fault recorder for electric system |
| CN102222980B (en) * | 2011-06-15 | 2014-07-30 | 中电普瑞科技有限公司 | Transient wave-recording playback system of series capacitor compensation device or fault current limiter device |
| CN203084546U (en) * | 2012-12-21 | 2013-07-24 | 上海大郡动力控制技术有限公司 | Fault diagnosis support system of motor control system of electric automobile |
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