CN208537634U - Target phase sequence identifier when a kind of utilization - Google Patents

Abstract

Target phase sequence identifier when the utility model discloses a kind of utilization, including the first GPS time stamp module, second GPS time stamp module and data processing module, first GPS time stamp module and the second GPS time stamp module are separately positioned on the both ends of three-phase power line, and it is wirelessly connected with data processing module, first GPS time stamp module and the second GPS time stamp module are respectively used to measurement power line rear and front end three-phase voltage and are read out to the timing node of each phase voltage zero crossing, data processing module is for comparing whether the timing node that the first GPS time stamp module and the second GPS time stamp module are recorded corresponds, if any time node does not correspond to, then sound an alarm.The utility model can guarantee that the first GPS time stamp module is consistent with the clock of the second GPS time stamp module from GPS satellite acquisition time signal, and whether the timing node by comparing rear and front end Zero Crossing Point for Three Phase Voltage is identical can intuitively to judge whether voltage phase sequence is consistent.

Description

Target phase sequence identifier when a kind of utilization

Technical field

The utility model relates to electric power phase sequence recognizing technique fields, and in particular to target phase sequence identifier when a kind of utilization.

Background technique

It is reversed after power phase is reversed and leads to accident or equipment damage.Such as elevator, central air-conditioning, row hangs, motor etc. as The phase sequence error after maintenance of fruit power supply will lead to the generation of accident, it is necessary to access phase sequence relay in control loop, guarantee phase sequence It is errorless.Compressor of air conditioner also has using phase sequence relay, guarantees that compressor is unlikely to after maintenance that there is a situation where invert.

The working principle of current phase sequence identifier is according to L1, L2, and the sequence of the voltage over zero of L3 three-phase is distinguished, If zero crossing passes sequentially through, or back through, all it is judged as correct phase sequence, that is to say, that ABC, BCA, Whether CAB, these phase sequences are judged as correctly, there is no assurance that consistent with the ABC phase sequence of 2 routes.

Summary of the invention

In view of the deficiencies of the prior art, target phase sequence identifier when the utility model provides a kind of utilization, it is existing for solving There is the problem of phase sequence identifier cannot correctly identify phase sequence.

The content of the utility model is as follows:

At target phase sequence identifier when a kind of utilization, including the first GPS time stamp module, the second GPS time stamp module and data Module is managed, the first GPS time stamp module and the second GPS time stamp module are separately positioned on the both ends of three-phase power line, and It is wirelessly connected with the data processing module, the first GPS time stamp module is for measuring power line front-end A, B, C three-phase voltage And the timing node of each phase voltage zero crossing is read out, the second GPS time stamp module is for measuring electric power line back end A, B, C three-phase voltage and the timing node of each phase voltage zero crossing is read out, the data processing module is for comparing Whether the timing node that the first GPS time stamp module and the second GPS time stamp module are recorded corresponds, when any Intermediate node does not correspond to, then sounds an alarm.

Preferably, the first GPS time stamp module includes first processor, and is connect respectively with the first processor The first school GPS when module, first time mark module and the first wireless communication module, module is used for when the first school GPS The time signal of standard is obtained from GPS satellite, the first time mark module is for measuring power line front-end A, B, C tri- Phase voltage is simultaneously read out the timing node of each phase voltage zero crossing, and is transmitted to by first wireless communication module The data processing module.

Preferably, the second GPS time stamp module includes second processor, and is connect respectively with the second processor The 2nd school GPS when module, the second time mark module and the second wireless communication module, module is used for when the 2nd school GPS The time signal of standard is obtained from GPS satellite, the second time mark module is for measuring electric power line back end A, B, C tri- Phase voltage is simultaneously read out the timing node of each phase voltage zero crossing, and is transmitted to by second wireless communication module The data processing module.

Preferably, the data processing module includes sequentially connected third wireless communication module, data comparator and Three processors.

Further, the data processing module further includes alarm device, and the alarm device is connect with the third processor.

The utility model has the following beneficial effects: the utility model can guarantee the first GPS time stamp from GPS acquisition time signal Module is consistent with the clock of the second GPS time stamp module, by compare rear and front end Zero Crossing Point for Three Phase Voltage timing node whether It is identical intuitively to judge whether voltage phase sequence is consistent.

Detailed description of the invention

Fig. 1 show the functional block diagram of the utility model embodiment.

Specific embodiment

The above description is merely an outline of the technical solution of the present invention, in order to better understand the skill of the utility model Art means, and being implemented in accordance with the contents of the specification, and in order to allow the above and other purpose, feature of the utility model It can be more clearly understood with advantage, it is special below to lift preferred embodiment, and cooperate attached drawing, detailed description are as follows.

Please refer to Fig. 1, target phase sequence identifier when a kind of utilization disclosed in the present embodiment, including the first GPS time stamp module 1, the second GPS time stamp module 2 and data processing module 3, the first GPS time stamp module and the second GPS time stamp module 2 are divided The both ends of three-phase power line are not set, and are wirelessly connected with the data processing module 3, the first GPS described in the present embodiment The setting of markers module 1 is in the first substation, and the setting of the second GPS time stamp module 2 is in the second substation, the first substation and the Two substations are separately positioned on the both ends of three-phase power line.The first GPS time stamp module 1 for measure power line front-end A, B, C three-phase voltage and the timing node of each phase voltage zero crossing is read out, the second GPS time stamp module 2 is for surveying Amount electric power line back end A, B, C three-phase voltage is simultaneously read out the timing node of each phase voltage zero crossing, the data processing The timing node that module 3 is recorded for the first GPS time stamp module 1 and the second GPS time stamp module 2 whether one One is corresponding, if any time node does not correspond to, sounds an alarm.

The first GPS time stamp module 1 includes first processor 11, and first connect respectively with first processor 11 Module 12, first time mark module 13 and the first wireless communication module 14 when the school GPS, module 12 is adopted when the first school GPS With GPS time corrector, mark is provided for obtaining the time signal of standard from GPS satellite, and for the first GPS time stamp module 1 Quasi- clock signal, the first time mark module 13 is for measuring power line front-end A, B, C three-phase voltage and to each phase The timing node of voltage over zero is read out.The first processor 11 be used for will treated timescale data by described the One wireless communication module 14 is transferred to the data processing module 3.

When the second GPS time stamp module 2 includes the 2nd school GPS connecting with second processor 21 when module 22, second Between mark module 23 and the second wireless communication module 24, module 21 uses GPS time corrector when the 2nd school GPS, for from GPS The time signal of standard is obtained on satellite, and provides the clock signal of standard for the second GPS time stamp module 2, described second Time mark module 23 for measure electric power line back end A, B, C three-phase voltage and to the timing node of each phase voltage zero crossing into Row is read.The second processor 21 is used to for treated timescale data being transferred to by second wireless communication module 24 The data processing module 3.

Module when the present embodiment is provided with the school GPS obtains the time signal of standard, it is ensured that first from GPS satellite GPS markers module and the second GPS time stamp module clock signal having the same, and module can be as accurate as millisecond when the school GPS, Advantageously reduce error.

The data processing module 3 includes sequentially connected third wireless communication module 31, data comparator 32, at third Manage device 33 and alarm device 34, the third wireless communication module 31 is for receiving the first GPS time stamp module 1 and described the The timescale data of two GPS markers modules 2, the data comparator 32 include first comparator 321, the second comparator 322 and the Three comparators 323, the input terminal of the first comparator 321 are connect with the third wireless communication module 31, output end and institute The connection of third processor 33 is stated, for comparing the markers and the second substation A phase voltage mistake of the first substation A phase voltage zero crossing The markers of zero point whether in error range, the input terminal of second comparator 322 and the third wireless communication module 31 Connection, output end is connect with the third processor 33, for comparing the markers and second of the first substation B phase voltage zero crossing The markers of substation B phase voltage zero crossing whether in error range, the input terminal of the third comparator 323 and described the The connection of three wireless communication modules 31, output end are connect with the third processor 33, for comparing the first substation C phase voltage mistake The markers of the markers of zero point and the second substation C phase voltage zero crossing whether in error range, if comparing result is to exist In error range, then three-phase voltage phase sequence is correct, otherwise three-phase voltage phase sequence mistake, and the third processing 33 passes through the alarm Device 34 sends a warning.The present embodiment pass through compare respectively the first substation and second substation's Zero Crossing Point for Three Phase Voltage when Whether intermediate node is identical, it can be determined that whether consistent goes out voltage phase sequence, and the comparison of voltage data is converted to timing node Comparison, it is more intuitive effective.

First processor 11 described in the present embodiment, the second processor 21 and the third processor 33 are all made of list Piece machine.

The above, the only preferred embodiment of the utility model, the utility model are not limited to above-mentioned implementation Mode, as long as its technical effect for reaching the utility model with identical means, all should belong to the protection scope of the utility model. Its technical solution and/or embodiment within the protection scope of the present utility model can have a variety of different modifications and variations.

Claims (5)

1. target phase sequence identifier when a kind of utilization, it is characterised in that: including the first GPS time stamp module (1), the second GPS time stamp Module (2) and data processing module (3), the first GPS time stamp module (1) and the second GPS time stamp module (2) set respectively It sets at the both ends of three-phase power line, and is wirelessly connected with the data processing module (3), the first GPS time stamp module (1) is used In measurement power line front-end A, B, C three-phase voltage and the timing node of each phase voltage zero crossing is read out, described second GPS time stamp module (2) for measure electric power line back end A, B, C three-phase voltage and to the timing node of each phase voltage zero crossing into Row is read, and the data processing module (3) is used for the first GPS time stamp module (1) and the second GPS time stamp module (2) whether the timing node recorded corresponds, and when any time node does not correspond to, then sounds an alarm.

2. phase sequence identifier as described in claim 1, it is characterised in that: the first GPS time stamp module (1) includes at first Manage device (11), and connect respectively with the first processor (11) the first school GPS when module (12), at the first time mark mould Block (13) and the first wireless communication module (14), module (12) from GPS satellite for obtaining standard when the first school GPS Time signal, the first time mark module (13) is for measuring power line front-end A, B, C three-phase voltage and to each phase electricity The timing node for pressing through zero point is read out, and is transmitted to the data processing mould by first wireless communication module (14) Block (3).

3. phase sequence identifier as described in claim 1, it is characterised in that: the second GPS time stamp module (2) includes at second Manage device (21), and connect respectively with the second processor (21) the 2nd school GPS when module (22), the second time mark mould Block (23) and the second wireless communication module (24), module (22) from GPS satellite for obtaining standard when the 2nd school GPS Time signal, the second time mark module (23) is for measuring electric power line back end A, B, C three-phase voltage and to each phase electricity The timing node for pressing through zero point is read out, and is transmitted to the data processing mould by second wireless communication module (24) Block (3).

4. phase sequence identifier as described in claim 1, it is characterised in that: the data processing module (3) includes being sequentially connected Third wireless communication module (31), data comparator (32) and third processor (33).

5. phase sequence identifier as claimed in claim 4, it is characterised in that: the data processing module (3) further includes alarm device (34), the alarm device (34) connect with the third processor (33).