CN114002523A - Method and device for synchronously acquiring data among distributed system modules in real time - Google Patents
Method and device for synchronously acquiring data among distributed system modules in real time Download PDFInfo
- Publication number
- CN114002523A CN114002523A CN202111211891.1A CN202111211891A CN114002523A CN 114002523 A CN114002523 A CN 114002523A CN 202111211891 A CN202111211891 A CN 202111211891A CN 114002523 A CN114002523 A CN 114002523A
- Authority
- CN
- China
- Prior art keywords
- module
- data
- instantaneous phase
- phase value
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000012545 processing Methods 0.000 claims abstract description 47
- 230000001360 synchronised effect Effects 0.000 claims abstract description 38
- 238000005070 sampling Methods 0.000 claims description 17
- 238000004364 calculation method Methods 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 3
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
- G06F17/10—Complex mathematical operations
- G06F17/14—Fourier, Walsh or analogous domain transformations, e.g. Laplace, Hilbert, Karhunen-Loeve, transforms
Abstract
A real-time synchronous acquisition method and device for data among distributed system modules are disclosed, the method comprises: collecting data of each module and data of a power supply in a distributed system in real time; processing the data of each module by taking the power data as a reference; and carrying out synchronous processing on the processed data of each module. The data acquired by each module of the distributed system in the invention takes the device power supply as a reference, and the synchronous acquisition does not need to depend on an external clock source, thereby reducing the engineering construction difficulty, improving the reliability of the system and optimizing the monitoring system structure.
Description
Technical Field
The invention relates to the technical field of industrial control of distributed systems, in particular to a real-time synchronous acquisition method and device for data among distributed system modules.
Background
The problem of accurate signal synchronous acquisition of a distributed system in the field of industrial control is always a concern, the synchronous acquisition of data is generally realized by adopting an external clock source synchronization technology at present, the scheme structure is complex, and the cost is high.
For example, in an online monitoring system of a zinc oxide arrester, the calculation of the resistive current requires the simultaneous measurement of the voltage and leakage current of a metal zinc oxide arrester (MOA). The MOA voltage and the leakage current are difficult to accurately and synchronously acquire due to the fact that the MOA voltage and the leakage current are far away from each other, so that the resistive current cannot be accurately measured.
Disclosure of Invention
Based on the above situation in the prior art, an object of the present invention is to provide a method and an apparatus for synchronously acquiring data between distributed system modules in real time, in order to solve the problem of a complex synchronous acquisition manner in the prior art.
The invention provides a real-time synchronous acquisition method of data among distributed system modules, which comprises the following steps:
collecting data of each module and data of a power supply in a distributed system in real time;
processing the data of each module by taking the power data as a reference;
and carrying out synchronous processing on the processed data of each module.
Further, in the step of acquiring data of each module and data of the power supply in the distributed system in real time: the power supply data includes a voltage signal of the power supply.
Further, the step of processing the data of each module with the power data as a reference includes:
calculating the data of each module and the fundamental wave instantaneous phase value of the power supply voltage signal, and respectively calculating by adopting the following formulas:
in the formula, phiSiIs the fundamental instantaneous phase value of the data signal of the ith module;
is the fundamental instantaneous phase value of the supply voltage signal; si (n) is the nth sampling value of the data signal of the ith module; u shaperef(n) is the nth sample value of the supply voltage signal; t is a sampling period; n is the number of sampling points;
calculating the difference value of the instantaneous phase value of the fundamental wave between each module and the power supply voltage signal by adopting the following formula:
Φiis the difference in the instantaneous phase value of the fundamental wave between the ith module and the supply voltage signal.
Further, the step of performing synchronous processing on the processed data of each module includes:
uploading the data of each module and the difference value of the instantaneous phase value of the fundamental wave between each module and the power supply voltage signal to a signal processing module through a data bus;
the signal processing module controls each module to carry out synchronous processing, and synchronous calculation is carried out according to the following formula:
Φik＝φSi-φSk＝Φi-Φk (4)
wherein phiikIs the difference of the instantaneous phase value of the fundamental wave between the ith module and the kth module, phiSiIs the fundamental instantaneous phase value, phi, of the data signal of the ith moduleSkIs the fundamental instantaneous phase value, phi, of the data signal of the kth moduleiIs the difference of the instantaneous phase value of the fundamental wave between the ith module and the supply voltage signal, phikIs the difference in the instantaneous phase value of the fundamental wave between the kth module and the supply voltage signal.
The second aspect of the present invention provides a real-time synchronous data acquisition device between distributed system modules, including:
the signal acquisition module is used for acquiring data of each module in the distributed system and data of the power supply in real time; processing the data of each module by taking the power data as a reference;
and the signal processing module is used for carrying out synchronous processing on the processed data of each module.
Further, the power data includes a voltage signal of the power supply.
Further, the signal acquisition module executes the following steps:
calculating the data of each module and the fundamental wave instantaneous phase value of the power supply voltage signal, and respectively calculating by adopting the following formulas:
in the formula, phiSiIs the fundamental instantaneous phase value of the data signal of the ith module;
is the fundamental instantaneous phase of the mains voltage signalA value; si (n) is the nth sampling value of the data signal of the ith module; u shaperef(n) is the nth sample value of the supply voltage signal; t is a sampling period; n is the number of sampling points;
calculating the difference value of the instantaneous phase value of the fundamental wave between each module and the power supply voltage signal by adopting the following formula:
Φiis the difference in the instantaneous phase value of the fundamental wave between the ith module and the supply voltage signal.
Further, the signal acquisition module uploads the data of each module and the difference value of the instantaneous phase value of the fundamental wave between each module and the power supply voltage signal to the signal processing module through a data bus;
the signal processing module controls each module to perform synchronous processing, and performs synchronous calculation according to the following formula:
Φik＝φSi-φSk＝Φi-Φk (4)
wherein phiikIs the difference of the instantaneous phase value of the fundamental wave between the ith module and the kth module, phiSiIs the fundamental instantaneous phase value, phi, of the data signal of the ith moduleSkIs the fundamental instantaneous phase value, phi, of the data signal of the kth moduleiIs the difference of the instantaneous phase value of the fundamental wave between the ith module and the supply voltage signal, phikIs the difference in the instantaneous phase value of the fundamental wave between the kth module and the supply voltage signal.
The third aspect of the present invention provides a system for synchronously acquiring data among modules in a distributed system in real time, which comprises:
a memory and one or more processors;
wherein the memory is communicatively coupled to the one or more processors and has stored therein instructions executable by the one or more processors to cause the one or more processors to perform the method as previously described.
A fourth aspect of the invention provides a computer-readable storage medium having stored thereon computer-executable instructions operable, when executed by a computing device, to perform a method as previously described.
In summary, the present invention provides a method and an apparatus for synchronously acquiring data between distributed system modules in real time, where the method includes: collecting data of each module and data of a power supply in a distributed system in real time; processing the data of each module by taking the power data as a reference; and carrying out synchronous processing on the processed data of each module. The data acquired by each module of the distributed system in the invention takes the device power supply as a reference, and the synchronous acquisition does not need to depend on an external clock source, thereby reducing the engineering construction difficulty, improving the reliability of the system and optimizing the monitoring system structure.
Drawings
FIG. 1 is a schematic flow chart of a method for synchronously acquiring data among modules of a distributed system in real time according to an embodiment of the present invention;
fig. 2 is a block diagram of a device for synchronously acquiring data among modules of a distributed system in real time according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
The first aspect of the present invention provides a method for synchronously acquiring data among modules of a distributed system in real time, as shown in fig. 1, including the following steps:
and S100, acquiring data of each module and data of a power supply in the distributed system in real time. Specifically, the power supply data includes a voltage signal of the power supply, and the data in each module may include a voltage, a current, or other signals.
And step S200, processing the data of each module by taking the power data as a reference. Specifically, the step of processing the data of each module with the power data as a reference includes:
calculating the data of each module and the fundamental wave instantaneous phase value of the power supply voltage signal, and respectively calculating by adopting the following formulas:
in the formula, phiSiIs the fundamental instantaneous phase value of the data signal of the ith module;
is the fundamental instantaneous phase value of the supply voltage signal; si (n) is the nth sampling value of the data signal of the ith module; u shaperef(n) is the nth sample value of the supply voltage signal; t is a sampling period; n is the number of sampling points;
calculating the difference value of the instantaneous phase value of the fundamental wave between each module and the power supply voltage signal by adopting the following formula:
Φiis the difference in the instantaneous phase value of the fundamental wave between the ith module and the supply voltage signal.
And step S300, synchronizing the processed data of each module. Specifically, the step of performing synchronous processing on the processed data of each module includes:
uploading the data of each module and the difference value of the instantaneous phase value of the fundamental wave between each module and the power supply voltage signal to a signal processing module through a data bus;
the signal processing module controls each module to carry out synchronous processing, and synchronous calculation is carried out according to the following formula:
Φik＝φSi-φSk＝Φi-Φk (4)
wherein phiikIs the difference of the instantaneous phase value of the fundamental wave between the ith module and the kth module, phiSiIs the fundamental instantaneous phase value, phi, of the data signal of the ith moduleSkIs the fundamental instantaneous phase value, phi, of the data signal of the kth moduleiIs the difference of the instantaneous phase value of the fundamental wave between the ith module and the supply voltage signal, phikIs the difference in the instantaneous phase value of the fundamental wave between the kth module and the supply voltage signal. The synchronous acquisition method is based on device power synchronization, and can eliminate the phase difference among the modules according to a formula 4 so as to complete the synchronous processing of data.
In one embodiment, the distributed system synchronization method is that each signal acquisition module completes distributed acquisition of data and sends the data to the signal processing module through a data bus, wherein the data acquired by each module takes the device power supply voltage phase as a reference. The signal processing module completes centralized processing and data synchronization of data.
The signal acquisition module calculates the fundamental wave instantaneous phase angle of the signal and the device power supply voltage signal by adopting a Fourier series phase difference detection algorithm. Because there is orthogonality between the different harmonics, so can filter the higher harmonic with the fundamental wave, then can accurately calculate the signal and the device mains voltage signal's the instantaneous phase value of fundamental wave, wherein in signal acquisition module 1:
wherein S1(n) isNumber 1 nth sample value; u shaperef(n) is the nth sample value of the device power supply voltage value; t is a sampling period; and N is the number of sampling points.
Obtaining the phase difference phi between the fundamental wave phase of the signal 1 and the fundamental wave phase of the device power supply voltage according to the formula (5) and the formula (6)1：
Φ1＝φs1－φUref (7)
The other signal acquisition modules adopt the same algorithm, and can accurately calculate fundamental wave instantaneous phase values of the acquired signals and the power supply voltage of the device. For example, the fundamental instantaneous phase value of the signal 2 in the signal acquisition module 2 is:
in the formula, S2(n) is the nth sample value of signal 2.
Obtaining the phase difference phi between the fundamental wave phase of the signal 2 and the fundamental wave phase of the device power supply voltage according to the formulas (8) and (6)2：
Φ2＝φs2－φUref (9)
And each signal acquisition unit transmits acquired signals, phase difference values and other data to the signal processing module through the data bus to realize synchronous processing of the data.
φ21＝φS2-φS1＝Φ2-Φ1 (10)
In the formula, phi21The phase angles are synchronized for signal 2 and signal 1.
A second aspect of the present invention provides a device for synchronously acquiring data between modules in a distributed system in real time, as shown in fig. 2, including: the signal acquisition module is used for acquiring data of each module in the distributed system and data of the power supply in real time; processing the data of each module by taking the power data as a reference; and the signal processing module is used for carrying out synchronous processing on the processed data of each module. The acquisition device is used for executing the acquisition method.
The third aspect of the present invention provides a system for synchronously acquiring data among modules in a distributed system in real time, which comprises: a memory and one or more processors; wherein the memory is communicatively coupled to the one or more processors and has stored therein instructions executable by the one or more processors to cause the one or more processors to perform the method as previously described.
A fourth aspect of the invention provides a computer-readable storage medium having stored thereon computer-executable instructions operable, when executed by a computing device, to perform a method as previously described.
In summary, the present invention provides a method and an apparatus for synchronously acquiring data between distributed system modules in real time, where the method includes: collecting data of each module and data of a power supply in a distributed system in real time; processing the data of each module by taking the power data as a reference; and carrying out synchronous processing on the processed data of each module. The data acquired by each module of the distributed system in the invention takes the device power supply as a reference, and the synchronous acquisition does not need to depend on an external clock source, thereby reducing the engineering construction difficulty, improving the reliability of the system and optimizing the monitoring system structure.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (10)
1. A real-time synchronous acquisition method for data among distributed system modules is characterized by comprising the following steps:
collecting data of each module and data of a power supply in a distributed system in real time;
processing the data of each module by taking the power data as a reference;
and carrying out synchronous processing on the processed data of each module.
2. The method for synchronously acquiring data among modules of a distributed system in real time according to claim 1, wherein the step of acquiring data of each module and data of a power supply in the distributed system in real time comprises: the power supply data includes a voltage signal of the power supply.
3. The method according to claim 2, wherein the step of processing the data of each module with reference to the power data comprises:
calculating the data of each module and the fundamental wave instantaneous phase value of the power supply voltage signal, and respectively calculating by adopting the following formulas:
in the formula, phiSiIs the fundamental instantaneous phase value of the data signal of the ith module;
is the fundamental instantaneous phase value of the supply voltage signal; si (n) is the nth sampling value of the data signal of the ith module; u shaperef(n) is the nth sample value of the supply voltage signal; t is a sampling period; n is the number of sampling points;
calculating the difference value of the instantaneous phase value of the fundamental wave between each module and the power supply voltage signal by adopting the following formula:
Φiis the difference in the instantaneous phase value of the fundamental wave between the ith module and the supply voltage signal.
4. The method according to claim 3, wherein the step of synchronously processing the processed data of each module comprises:
uploading the data of each module and the difference value of the instantaneous phase value of the fundamental wave between each module and the power supply voltage signal to a signal processing module through a data bus;
the signal processing module controls each module to carry out synchronous processing, and synchronous calculation is carried out according to the following formula:
Φik＝φSi-φSk＝Φi-Φk (4)
wherein phiikIs the difference of the instantaneous phase value of the fundamental wave between the ith module and the kth module, phiSiIs the fundamental instantaneous phase value, phi, of the data signal of the ith moduleSkIs the fundamental instantaneous phase value, phi, of the data signal of the kth moduleiIs the difference of the instantaneous phase value of the fundamental wave between the ith module and the supply voltage signal, phikIs the difference in the instantaneous phase value of the fundamental wave between the kth module and the supply voltage signal.
5. The utility model provides a real-time synchronous collection system of data between distributed system module which characterized in that includes:
the signal acquisition module is used for acquiring data of each module in the distributed system and data of the power supply in real time; processing the data of each module by taking the power data as a reference;
and the signal processing module is used for carrying out synchronous processing on the processed data of each module.
6. The device for real-time synchronous collection of data among modules in a distributed system according to claim 5, wherein the power data comprises a voltage signal of a power supply.
7. The device for synchronously acquiring data among modules of a distributed system according to claim 6, wherein the signal acquisition module executes the following steps:
calculating the data of each module and the fundamental wave instantaneous phase value of the power supply voltage signal, and respectively calculating by adopting the following formulas:
in the formula, phiSiIs the fundamental instantaneous phase value of the data signal of the ith module; phi is aUrefIs the fundamental instantaneous phase value of the supply voltage signal; si (n) is the nth sampling value of the data signal of the ith module; u shaperef(n) is the nth sample value of the supply voltage signal; t is a sampling period; n is the number of sampling points;
calculating the difference value of the instantaneous phase value of the fundamental wave between each module and the power supply voltage signal by adopting the following formula:
Φiis the difference in the instantaneous phase value of the fundamental wave between the ith module and the supply voltage signal.
8. The device for synchronously acquiring data among modules in a distributed system according to claim 7,
the signal acquisition module uploads the data of each module and the difference value of the fundamental wave instantaneous phase value between each module and the power supply voltage signal to the signal processing module through a data bus;
the signal processing module controls each module to perform synchronous processing, and performs synchronous calculation according to the following formula:
Φik＝φSi-φSk＝Φi-Φk (4)
wherein phiikIs the difference of the instantaneous phase value of the fundamental wave between the ith module and the kth module, phiSiIs the fundamental instantaneous phase value, phi, of the data signal of the ith moduleSkIs the fundamental instantaneous phase value, phi, of the data signal of the kth moduleiIs the difference of the instantaneous phase value of the fundamental wave between the ith module and the supply voltage signal, phikIs the difference in the instantaneous phase value of the fundamental wave between the kth module and the supply voltage signal.
9. The utility model provides a real-time synchronous acquisition system of data between distributed system module which characterized in that, this system includes:
a memory and one or more processors;
wherein the memory is communicatively coupled to the one or more processors and has stored therein instructions executable by the one or more processors to cause the one or more processors to perform the method of any of claims 1-4.
10. A computer-readable storage medium having stored thereon computer-executable instructions operable to perform the method of any of claims 1-4 when executed by a computing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111211891.1A CN114002523A (en) | 2021-10-18 | 2021-10-18 | Method and device for synchronously acquiring data among distributed system modules in real time |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111211891.1A CN114002523A (en) | 2021-10-18 | 2021-10-18 | Method and device for synchronously acquiring data among distributed system modules in real time |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114002523A true CN114002523A (en) | 2022-02-01 |
Family
ID=79923138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111211891.1A Pending CN114002523A (en) | 2021-10-18 | 2021-10-18 | Method and device for synchronously acquiring data among distributed system modules in real time |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114002523A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08330955A (en) * | 1995-05-30 | 1996-12-13 | Hitachi Ltd | Phase synchronizing system for signal processing |
| JPH102923A (en) * | 1996-06-13 | 1998-01-06 | Mitsubishi Electric Corp | Detector for leakage current of zinc oxide-type lightning arrester |
| CN102170135A (en) * | 2011-04-16 | 2011-08-31 | 湖南大学 | 35KV large capacity reactive compensation and harmonic suppression integrated system and control method thereof |
| CN202018473U (en) * | 2010-12-22 | 2011-10-26 | 上海市电力公司 | MOA (Metal Oxide Arrester) resistive-current live-monitoring device based on COMPASS (Beidou Satellite Navigation and Positioning System) synchronous timing |
| JP2012029434A (en) * | 2010-07-22 | 2012-02-09 | Shindengen Electric Mfg Co Ltd | Method for detecting phase jump in distribution type power source and system interconnection protecting apparatus |
| CN102520230A (en) * | 2011-12-15 | 2012-06-27 | 山东电力集团公司菏泽供电公司 | Zinc oxide lightning arrester operation state detection method |
| CN103187789A (en) * | 2011-12-30 | 2013-07-03 | 比亚迪股份有限公司 | Quick uninterrupted power system and control method of quick uninterrupted power system |
| CN103616580A (en) * | 2013-11-08 | 2014-03-05 | 北京博电新力电气股份有限公司 | Data conversion angular difference test method of merging units |
| CN104316891A (en) * | 2014-09-29 | 2015-01-28 | 许继电气股份有限公司 | Electronic mutual inductor performance real-time monitoring system and method |
| KR20150061067A (en) * | 2013-11-25 | 2015-06-04 | 한국전기연구원 | Simulator with Direct Current and Alternating Current Output for Multi-Function Test |
| CN109061275A (en) * | 2018-05-23 | 2018-12-21 | 中国电力科学研究院有限公司 | A kind of distributed On-line Monitoring of Leakage Current method and system of series compensation device voltage limiter |
| JP2020076702A (en) * | 2018-11-09 | 2020-05-21 | 三菱電機株式会社 | Ac electric quantity measuring device, ac electric quantity measuring method and bus transfer system |
-
2021
- 2021-10-18 CN CN202111211891.1A patent/CN114002523A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08330955A (en) * | 1995-05-30 | 1996-12-13 | Hitachi Ltd | Phase synchronizing system for signal processing |
| JPH102923A (en) * | 1996-06-13 | 1998-01-06 | Mitsubishi Electric Corp | Detector for leakage current of zinc oxide-type lightning arrester |
| JP2012029434A (en) * | 2010-07-22 | 2012-02-09 | Shindengen Electric Mfg Co Ltd | Method for detecting phase jump in distribution type power source and system interconnection protecting apparatus |
| CN202018473U (en) * | 2010-12-22 | 2011-10-26 | 上海市电力公司 | MOA (Metal Oxide Arrester) resistive-current live-monitoring device based on COMPASS (Beidou Satellite Navigation and Positioning System) synchronous timing |
| CN102170135A (en) * | 2011-04-16 | 2011-08-31 | 湖南大学 | 35KV large capacity reactive compensation and harmonic suppression integrated system and control method thereof |
| CN102520230A (en) * | 2011-12-15 | 2012-06-27 | 山东电力集团公司菏泽供电公司 | Zinc oxide lightning arrester operation state detection method |
| CN103187789A (en) * | 2011-12-30 | 2013-07-03 | 比亚迪股份有限公司 | Quick uninterrupted power system and control method of quick uninterrupted power system |
| CN103616580A (en) * | 2013-11-08 | 2014-03-05 | 北京博电新力电气股份有限公司 | Data conversion angular difference test method of merging units |
| KR20150061067A (en) * | 2013-11-25 | 2015-06-04 | 한국전기연구원 | Simulator with Direct Current and Alternating Current Output for Multi-Function Test |
| CN104316891A (en) * | 2014-09-29 | 2015-01-28 | 许继电气股份有限公司 | Electronic mutual inductor performance real-time monitoring system and method |
| CN109061275A (en) * | 2018-05-23 | 2018-12-21 | 中国电力科学研究院有限公司 | A kind of distributed On-line Monitoring of Leakage Current method and system of series compensation device voltage limiter |
| JP2020076702A (en) * | 2018-11-09 | 2020-05-21 | 三菱電機株式会社 | Ac electric quantity measuring device, ac electric quantity measuring method and bus transfer system |
Non-Patent Citations (3)
| Title |
|---|
| 兰五胜 等: "基于串行总线同步的氧化锌避雷器在线监测系统设计", 电磁避雷器, no. 2020, 24 June 2020 (2020-06-24), pages 110 - 114 * |
| 兰五胜;徐伟强;毛丽娜;雍明超;曾国辉;和红伟;: "基于串行总线同步的氧化锌避雷器在线监测系统设计", 电瓷避雷器, no. 03, 24 June 2020 (2020-06-24), pages 110 - 114 * |
| 宋辉;盛戈;王传庆;孙京;李晓博;江秀臣;: "基于无线同步的避雷器阻性电流测量系统", 高压电器, no. 05, 16 May 2012 (2012-05-16), pages 55 - 61 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100476443C (en) | Wide-zone electric-net phasor synchronous measuring device with freely-set synchronous time scale | |
| TW201720002A (en) | Method and apparatus for recording an electrical voltage in a supply network | |
| CN103616814A (en) | Synchronous sampling clock closed loop correcting method and system based on FPGA | |
| TWI479159B (en) | Method for estimating voltage stability | |
| CN102128982A (en) | Harmonic analysis method based on windowed interpolation FFT (Fast Fourier Transform) base frequency tracking technology | |
| CN109425844A (en) | A kind of calibration method and system of data sampling | |
| CN103941088A (en) | Method for quickly measuring frequency of electric power system based on three-phase signals | |
| CN108614155A (en) | A kind of synchronous phasor measuring method and system that Hamming window is added | |
| CN102236048A (en) | Method for measuring phasor frequency of electric system | |
| CN109521273B (en) | Synchronous phasor measurement method, system and device | |
| CN115113125A (en) | Correction system of multichannel arbitrary waveform generator | |
| CN114002523A (en) | Method and device for synchronously acquiring data among distributed system modules in real time | |
| CN113406436A (en) | Traveling wave fault location method and system for alternating-current and direct-current transmission line based on 5G communication | |
| Nagi et al. | Bayesian inference of parameters in power system dynamic models using trajectory sensitivities | |
| CN106772193B (en) | Measuring method using current transformer frequency characteristic measuring device | |
| CN108982954B (en) | Method and system for calculating phase voltage amplitude and phase suitable for feeder line terminal | |
| CN107255745B (en) | Voltage measuring method, voltage measuring device, storage medium and computer equipment thereof | |
| KR20170070700A (en) | Apparatus and Method for detecting accidents in Power Systems using PMU signal | |
| CN110763915B (en) | Method for calculating voltage included angle and zero line current and three-phase electric energy meter | |
| CN209247885U (en) | A kind of wireless phase measurement device | |
| CN112526209B (en) | Synchronous phasor measurement method for power system | |
| CN102542170B (en) | Method for acquiring slip frequency difference of electric system | |
| KR20170006067A (en) | Apparatus for estimating frequency of power system | |
| CN112180313A (en) | Automatic correction method and control device for current transformer and energy storage equipment | |
| CN104062545A (en) | Novel quick short circuit fault source locating method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |