CN105699789A - Identification method of fault indicator installation phase sequence - Google Patents
Identification method of fault indicator installation phase sequence Download PDFInfo
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- CN105699789A CN105699789A CN201610120710.7A CN201610120710A CN105699789A CN 105699789 A CN105699789 A CN 105699789A CN 201610120710 A CN201610120710 A CN 201610120710A CN 105699789 A CN105699789 A CN 105699789A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/18—Indicating phase sequence; Indicating synchronism
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Abstract
The invention discloses an identification method of a fault indicator installation phase sequence, which includes the steps of: monitoring a second pulse signal rising edge of a GPS clock signal; sending synchronization commands to indicators by a communication unit when the second pulse signal rising edge appears, and controlling each indicator to carry out voltage waveform sampling on respectively-installed phase sequence; and copying and reading sampling data of each indicator, and judging the phase sequence installed on each indicator according to a phase relationship of a three-phase voltage of an electric power system. The identification method of the fault indicator installation phase sequence uses the GPS clock signal to provide the uniform synchronization signal, uses the synchronization signal to control each indicator for the voltage waveform sampling, and judges the phase sequences where the indicators are according to the sampling waveforms. Therefore the method is automatically realized through the fault indicators all the way without human intervention. The efficiency is extremely high. The mistakes and errors possibly brought by manual operation are avoided. The information of the phase sequences where the indicators are is re-checked and corrected regularly and irregularly. The information correctness of the phase sequences where the indicators are is guaranteed.
Description
Technical field
Present invention relates particularly to a kind of fault detector and the recognition methods of phase sequence is installed。
Background technology
Along with the raising of the development of national economy technology and people's living standard, electric energy has become as people and produces and one of energy indispensable in life。
Status of electric power on-line monitoring technique, because it has the running status that can automatically monitor power system, the automatic detection advantage such as electrical equipment fault active reporting warning information, widely uses in power system。On-line monitoring type fault detector is one of visual plant of power system automation technology, it is generally made up of 1 communication unit and 3 communication type fault detectors, indicator communicates with communication unit by micropower is wireless, and 3 indicators can also communicate each other。Indicator distributing installation, in aerial line, power cable, ring main unit, cable branch box, is used for indicating the faults such as grid short circuit, single-phase earthing or broken string。Power circuit is divided into A, B, C three-phase, for same monitoring point, often it is respectively mounted a fault detector mutually, when an error occurs, corresponding indicator instruction fault, and by fault information reporting, main station system not only obtains fault message, also should obtain abort situation and the separate information of fault, be out of order type, separate, fault zone with automatic decision。
At present, the installation site of fault detector and separate, namely the line phase-sequence detection recognition method that fault detector is installed, the manual record being generally adopted or the method for typing in advance: manual record method is communication unit or main station system that the address of indicator itself recorded correspondence, is determined separate by address；The method of typing in advance is in indicator itself labelling A, B, C, in advance typing communication unit or main station system, be installed at the scene the circuit of correspondence separate on。All there is distinct disadvantage in above-mentioned method: owing to the installation point of fault detector is relatively more, erecting bed circuit is also complex, and phase sequence is unclear, is installed by after manually installed record or prior labelling, efficiency is extremely low, and the situation that all would be likely to occur misregistration or setup error occurs；And once after mistake generation, error detection and error correcting are all extremely difficult。
Summary of the invention
It is an object of the invention to provide a kind of efficiency higher and also can accurately identify install phase sequence phase sequence fault detector install phase sequence recognition methods。
The recognition methods of phase sequence installed by this fault detector provided by the invention, comprises the steps:
S1. the rising edge of the pps pulse per second signal in the GPS clock signal of monitoring communication unit；
S2. when the rising edge of the pps pulse per second signal described in step S1 occurs, communication unit sends synch command to indicator, controls each indicator and synchronizes the phase sequence of each self installation is carried out voltage waveform sampling；
S3. after each indicator completes voltage waveform sampling, the waveform sampling data of each indicator of communication unit copy reading；
S4. the communication unit waveform sampling data according to the step S3 each indicator obtained, according to the relation of phase place under Three-phase Power Systems voltage normal condition, it is judged that the phase sequence that each indicator is installed。
The recognition methods of phase sequence installed by described fault detector, also comprises the steps:
S5. the installation phase sequence information of each indicator is write in memorizer and the memorizer of self of each indicator by communication unit, to ensure indicator phase sequence information correct in running。
The recognition methods of phase sequence installed by described fault detector, also comprises the steps:
S6. the repetition step S1～S4 of communication unit timing or variable interval, the information to ensure the place phase sequence of communication unit and the storage of each indicator is correct。
Sampling described in step S2, is three cycles of at least sampled voltage waveform。
Sampling described in step S2, the sampled point for each cycle is at least 80 points。
Transmission synch command described in step S2, for communication unit by micropower wireless transmission broadcast synchronization order。
Judge, described in step S4, the phase sequence that each indicator is installed, judge in the following way: if the phase place of the voltage sample waveform of indicator is 0, namely phase angle is 0 °, then this indicator place phase sequence is defined as A phase；If the phase place of the sample waveform of indicator is 4 π/3, namely phase angle is 240 °, then this indicator place phase sequence is defined as B phase；If the phase place of the sample waveform of indicator is 2 π/3, namely phase angle is 120 °, then this indicator place phase sequence is defined as C phase。
Judge, described in step S4, the phase sequence that each indicator is installed, concrete determination methods is: if the information of voltage sampled data of indicator, zero crossing value it is carved with when 0ms, numerical value at 5ms is maximum, data at 15ms are minimum, numerical value at 20ms is zero passage point value, then judge the separate as A phase of this indicator；If the sampled point of indicator is carved with minimum when 1.875ms, it is carved with zero crossing value when 6.875ms, is carved with maximum when 11.875ms, be carved with zero crossing value when 16.875ms, then judge that this indicator is installed separate as B phase；If the sampled point of indicator is carved with zero crossing value when 3.333ms, it is carved with minimum when 8.333ms, is carved with zero crossing value when 13.333ms, be carved with maximum when 18.333ms, then judge that this indicator is installed separate as C phase。
The recognition methods of phase sequence installed by this fault detector provided by the invention, the clock signal utilizing the GPS module of communicator provides unified correct synchronous sampling signal, and this synchronous sampling signal is sent each indicator, and control each indicator according to this synchronous sampling signal be synchronously performed voltage waveform sampling, the last voltage waveform further according to sampling carries out the judgement of indicator place phase sequence, therefore the inventive method whole process is automatically obtained by fault detector and communication unit, do not need human intervention, ultrahigh in efficiency, and completely avoid the mistake that manual operation is likely to bring；Carrying out simultaneously as the present invention can automatically control, therefore the inventive method timing or the phase sequence information to indicator place of variable interval can be checked and correct, it is ensured that the correctness of indicator place phase sequence information。
Accompanying drawing explanation
Fig. 1 is the method flow diagram of the present invention。
Fig. 2 is the A phase voltage sample waveform figure of the present invention。
Fig. 3 is the B phase voltage sample waveform figure of the present invention。
Fig. 4 is the C phase voltage sample waveform figure of the present invention。
Detailed description of the invention
It is illustrated in figure 1 the method flow diagram of the present invention: the recognition methods of phase sequence installed by this fault detector provided by the invention, comprises the steps:
S1. the rising edge of the pps pulse per second signal in the GPS clock signal of monitoring communication unit；
S2. when the rising edge of the pps pulse per second signal described in step S1 occurs, communication unit sends synch command to indicator, controls each indicator and synchronizes the phase sequence of each self installation is carried out voltage waveform sampling；
Communication unit is by micropower wireless transmission broadcast synchronization order: owing to three indicators are simultaneously received broadcast synchronization signal, be designated as initial time with this synchronization point, starts to record sampling number evidence, persistently records the data of 3 cycles；Owing to the time of each cycle is 20ms, then continue to record 60ms；Owing to wireless signal is electromagnetic wave signal, and distance is less than 50 meters, and therefore the time delay of broadcast synchronization signal is less than 20us, thereby indicate that when device receives the synch command of communication unit, relative to the time of each cycle 20ms, it is possible to ignore；
Additionally, when requiring indicator to the sampling of line voltage waveform, 3 cycles of sampled voltage waveform are at least wanted in sampling, and the sampling frequency of each cycle cannot be below 80 sampled points every time；
S3. after each indicator completes voltage waveform sampling, the waveform sampling data of each indicator of communication unit copy reading；
S4. the communication unit waveform sampling data according to the step S3 each indicator obtained, according to the relation of phase place under Three-phase Power Systems voltage normal condition, it is judged that the phase sequence that each indicator is installed；
S5. the installation phase sequence information of each indicator is write in memorizer and the memorizer of self of each indicator by communication unit, to ensure the storage of the installation phase sequence information of each indicator；
S6. the repetition above step of communication unit timing or variable interval, the information to ensure the place phase sequence of communication unit and the storage of each indicator is correct。
After the voltage waveform of complete each indicator sampling of communication unit copy reading, the phase sequence that each indicator is installed can be judged according to the voltage waveform of the relation sampling of phase place under Three-phase Power Systems voltage normal condition, specifically can adopt phase horn cupping, that is: if the phase place of the sample waveform of indicator is 0, namely phase angle is 0 °, then this indicator place phase sequence is defined as A phase；If the phase place of the sample waveform of indicator is 4 π/3, namely phase angle is 240 °, then this indicator place phase sequence is defined as B phase；If the phase place of the sample waveform of indicator is 2 π/3, namely phase angle is 120 °, then this indicator place phase sequence is defined as C phase。
In addition, can also adopting numerical method, judge the installation phase sequence of each indicator in conjunction with the data of sample waveform, concrete grammar is as follows: be followed successively by the A phase/B phase/C phase voltage sample waveform figure of the present invention as shown in Figure 2 to 4, judge by calculating, if the sampled point of certain indicator, being carved with zero crossing value when 0ms, the numerical value at 5ms is maximum, data at 15ms are minimum, numerical value at 20ms is zero passage point value, then judge the separate as A phase of this indicator, namely as shown in Figure 2；If the sampled point of certain indicator, it is carved with minimum when 1.875ms, is carved with zero crossing value when 6.875ms, it is carved with maximum when 11.875ms, be carved with zero crossing value when 16.875ms, then what judge that this indicator installs is separate as B phase, namely as shown in Figure 3；If the sampled point of certain indicator, it is carved with zero crossing value when 3.333ms, is carved with minimum when 8.333ms, zero crossing value it is carved with when 13.333ms, be carved with maximum when 18.333ms, then what judge that this indicator installs is separate as C phase, namely as shown in Figure 4。
Claims (8)
1. a recognition methods for phase sequence installed by fault detector, comprises the steps:
S1. the rising edge of the pps pulse per second signal in the GPS clock signal of monitoring communication unit；
S2. when the rising edge of the pps pulse per second signal described in step S1 occurs, communication unit sends synch command to indicator, controls each indicator and synchronizes the phase sequence of each self installation is carried out voltage waveform sampling；
S3. after each indicator completes voltage waveform sampling, the waveform sampling data of each indicator of communication unit copy reading；
S4. the communication unit waveform sampling data according to the step S3 each indicator obtained, according to the relation of phase place under Three-phase Power Systems voltage normal condition, it is judged that the phase sequence that each indicator is installed。
2. the recognition methods of phase sequence installed by fault detector according to claim 1, it is characterised in that also comprise the steps:
S5. the installation phase sequence information of each indicator is write in memorizer and the memorizer of self of each indicator by communication unit, to ensure the storage of the installation phase sequence information of each indicator。
3. the recognition methods of phase sequence installed by fault detector according to claim 1, it is characterised in that also comprise the steps:
S6. the repetition step S1～S4 of communication unit timing or variable interval, the information to ensure the place phase sequence of communication unit and the storage of each indicator is correct。
4. the recognition methods of phase sequence is installed according to the fault detector one of claims 1 to 3 Suo Shu, it is characterised in that the sampling described in step S2, is three cycles of at least sampled voltage waveform。
5. the recognition methods of phase sequence is installed according to the fault detector one of claims 1 to 3 Suo Shu, it is characterised in that the sampling described in step S2, the sampled point for each cycle is at least 80 points。
6. the recognition methods of phase sequence is installed, it is characterised in that the transmission synch command described in step S2 according to the fault detector one of claims 1 to 3 Suo Shu, for communication unit by micropower wireless transmission broadcast synchronization order。
7. the recognition methods of phase sequence is installed according to the fault detector one of claims 1 to 3 Suo Shu, it is characterized in that judging, described in step S4, the phase sequence that each indicator is installed, for judging in the following way: if the phase place of the sample waveform of indicator is 0, namely phase angle is 0 °, then this indicator place phase sequence is defined as A phase；If the phase place of the sample waveform of indicator is 4 π/3, namely phase angle is 240 °, then this indicator place phase sequence is defined as B phase；If the phase place of the sample waveform of indicator is 2 π/3, namely phase angle is 120 °, then this indicator place phase sequence is defined as C phase。
8. the recognition methods of phase sequence is installed according to the fault detector one of claims 1 to 3 Suo Shu, it is characterized in that judging, described in step S4, the phase sequence that each indicator is installed, for judging in the following way: if the sampled point of indicator, zero crossing value it is carved with when 0ms, numerical value at 5ms is maximum, data at 15ms are minimum, and the numerical value at 20ms is zero passage point value, then judge the separate as A phase of this indicator；If the sampled point of indicator is carved with minimum when 1.875ms, it is carved with zero crossing value when 6.875ms, is carved with maximum when 11.875ms, be carved with zero crossing value when 16.875ms, then judge that this indicator is installed separate as B phase；If the sampled point of indicator is carved with zero crossing value when 3.333ms, it is carved with minimum when 8.333ms, is carved with zero crossing value when 13.333ms, be carved with maximum when 18.333ms, then judge that this indicator is installed separate as C phase。
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106597133A (en) * | 2016-12-15 | 2017-04-26 | 福州大学 | Method and device for recognition and identification of low-voltage power grid single-phase line phase sequence |
| CN108614165A (en) * | 2018-06-14 | 2018-10-02 | 威胜信息技术股份有限公司 | Fault detector installs the recognition methods of phase sequence |
| CN109142977A (en) * | 2018-09-13 | 2019-01-04 | 无锡圣普电力科技有限公司 | The phase automatic testing method of transient state recording type fault detector |
| CN109298361A (en) * | 2018-09-10 | 2019-02-01 | 国网江苏省电力有限公司电力科学研究院 | Accident analysis preprocess method based on transient state recording type fault detector |
| CN111060754A (en) * | 2019-12-31 | 2020-04-24 | 南京新联智慧能源服务有限公司 | Electric energy information acquisition terminal with automatic phase sequence identification function and automatic phase sequence identification method |
| CN111157847A (en) * | 2020-01-07 | 2020-05-15 | 长沙医学院 | Transient recording fault indicator installation phase sequence self-recognition method |
| CN111913051A (en) * | 2020-05-25 | 2020-11-10 | 威胜信息技术股份有限公司 | Method for automatically adjusting phase sequence of power distribution network, monitoring unit and monitoring system |
| CN112798878A (en) * | 2021-02-25 | 2021-05-14 | 山东科汇电力自动化股份有限公司 | Line transposition automatic phase sequence identification method based on voltage synchronous comparison |
| CN114019404A (en) * | 2021-11-05 | 2022-02-08 | 深圳市泛海三江电子股份有限公司 | Three-phase alternating current power supply sequence detection method and system |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106597133A (en) * | 2016-12-15 | 2017-04-26 | 福州大学 | Method and device for recognition and identification of low-voltage power grid single-phase line phase sequence |
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| CN108614165A (en) * | 2018-06-14 | 2018-10-02 | 威胜信息技术股份有限公司 | Fault detector installs the recognition methods of phase sequence |
| CN109298361B (en) * | 2018-09-10 | 2020-08-14 | 国网江苏省电力有限公司电力科学研究院 | Fault analysis preprocessing method based on transient recording type fault indicator |
| CN109298361A (en) * | 2018-09-10 | 2019-02-01 | 国网江苏省电力有限公司电力科学研究院 | Accident analysis preprocess method based on transient state recording type fault detector |
| CN109142977B (en) * | 2018-09-13 | 2021-02-02 | 无锡圣普电力科技有限公司 | Phase automatic detection method of transient recording type fault indicator |
| CN109142977A (en) * | 2018-09-13 | 2019-01-04 | 无锡圣普电力科技有限公司 | The phase automatic testing method of transient state recording type fault detector |
| CN111060754A (en) * | 2019-12-31 | 2020-04-24 | 南京新联智慧能源服务有限公司 | Electric energy information acquisition terminal with automatic phase sequence identification function and automatic phase sequence identification method |
| CN111157847A (en) * | 2020-01-07 | 2020-05-15 | 长沙医学院 | Transient recording fault indicator installation phase sequence self-recognition method |
| CN111913051A (en) * | 2020-05-25 | 2020-11-10 | 威胜信息技术股份有限公司 | Method for automatically adjusting phase sequence of power distribution network, monitoring unit and monitoring system |
| WO2021237976A1 (en) * | 2020-05-25 | 2021-12-02 | 威胜信息技术股份有限公司 | Method for automatically adjusting phase sequence of power distribution network, and monitoring unit and monitoring system |
| CN112798878A (en) * | 2021-02-25 | 2021-05-14 | 山东科汇电力自动化股份有限公司 | Line transposition automatic phase sequence identification method based on voltage synchronous comparison |
| CN114019404A (en) * | 2021-11-05 | 2022-02-08 | 深圳市泛海三江电子股份有限公司 | Three-phase alternating current power supply sequence detection method and system |
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Application publication date: 20160622 |