CN205120777U - Single -phase intelligent ammeter based on gather residual current technique in real time - Google Patents
Single -phase intelligent ammeter based on gather residual current technique in real time Download PDFInfo
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- CN205120777U CN205120777U CN201520964209.XU CN201520964209U CN205120777U CN 205120777 U CN205120777 U CN 205120777U CN 201520964209 U CN201520964209 U CN 201520964209U CN 205120777 U CN205120777 U CN 205120777U
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Abstract
The utility model discloses a solve the problem that prior art existed, find a single -phase intelligent ammeter based on gather residual current technique in real time, initiatively arrange leak detection. Including casing, binding post seat, phase line, zero line, relay, residual current transformer, binding post seat fixed mounting is on the casing, phase line and zero line are installed in the casing, and the input of amplifier is connected with residual current transformer's output, and be enlarged with residual current transformer's output signal, the comparator, the input of comparator and the output of amplifier link to each other, enlarge the succeeding crop with residual current transformer's output signal and carry out comparison and output compare signal as a result for input and preset's threshold value, singlechip, singlechip include well fracture, and the well fracture of singlechip links to each other with the output of comparator, the output terminal connected relay's of singlechip control line, the singlechip comparative result signal output relay control signal that the fracture was received in according to. The real -time of investigation has been improved.
Description
Technical field
The utility model belongs to power domain, is specifically related to the single-phase intelligent electric energy meter based on Real-time Collection residual current technology.
Background technology
Publication number is that the utility model creation of CN104374964A discloses a kind of electric energy meter measuring residual current, comprises housing, terminal block, phase line, zero line, relay, phase line current sampling resistor, residual current transformer and circuit arrangement; Relay, phase line current sampling resistor and residual current transformer are all arranged in housing; Phase line and zero line are through residual current transformer; Circuit arrangement comprises voltage sample module, signal processing module, A/D modular converter, electric energy metering module, single chip processing module, relay control module, communication module, LCD display module, key-press module and power module.This utility model is created and can be realized measuring the residual current in subscriber's line, record, and there is residual current overload alarm event and event recording function, only need improve on existing intelligent electric meter, improving cost is not high, and do not affect function and the physical dimension of existing electric energy meter, be convenient to spread, its deficiency is: real-time is not strong, for intelligent electric energy meter, it realizes a lot of sophisticated functions, the single task operating system adopted, can not switch by real-time, freedom between task, and residual electricity flow valuve is passive acquisition for single-chip microcomputer, former mode can not read residual electricity flow valuve in real time, when only having single-chip microcomputer to switch to reading computation chip residual electricity flow valuve task, single-chip microcomputer could whether superthreshold judges to this value, and for detection residual current essence, inherently there is randomness and sudden in electric leakage, if do not adopted interrupt mode, exist so electric leakage must be caught in real time.On the other hand, adopt the relay construction of the band residual current transformer of integration, the layout of Intelligent Optimal electric energy meter inside, avoids separated structure to connect up messy and aging rear the brought short circuit electric shock accidents of long-time use, ensures stablizing of Electrical Safety and electrical network greatly.
Utility model content
The purpose of this utility model is to solve the problem existing for prior art, find a kind of single-phase intelligent electric energy meter based on Real-time Collection residual current technology, the residual current in single-phase electrical system can be detected in real time, and passive for tradition investigation electric leakage mode is updated to active investigation mode,, improve the real-time of investigation.
In order to realize described object, the utility model is the single-phase intelligent electric energy meter based on Real-time Collection residual current technology, comprise housing, terminal block, phase line, zero line, for control phase line break-make relay, for measuring the residual current transformer of residual current, terminal block is fixedly mounted on housing; Relay, residual current transformer, phase line and zero line are arranged in housing, also comprise:
Amplifier, the input end of described amplifier is connected with the output terminal of residual current transformer, the output signal of residual current transformer is amplified;
Comparer, the input end of described comparer is connected with the output terminal of amplifier, compares and exports compare result signal after the output signal of residual current transformer is amplified as input and the reference threshold preset;
Single-chip microcomputer, described single-chip microcomputer comprises middle fracture, and the middle fracture of single-chip microcomputer is connected with the output terminal of comparer, and the output terminal of single-chip microcomputer connects the control line of relay, single-chip microcomputer according in the compare result signal output relay control signal of fracture reception.
Preferably, described relay comprises contact, and the contact of described relay is arranged in phase line to control the break-make of phase line.
Preferably, the PWM of described single-chip microcomputer or timer output end mouth are connected with comparator reference value input port, and described single-chip microcomputer regulates the threshold value of comparer by PWM or timer, thus regulate leakage current test threshold value.
Preferably, described terminal block comprises the first connection terminal, the second connection terminal, the 3rd connection terminal and the 4th connection terminal; One end of zero line is electrically connected with the 3rd connection terminal; The other end of zero line is electrically connected with the 4th connection terminal; Described relay and residual current transformer are all arranged in housing; One end of phase line is connected with the first connection terminal, and the other end of phase line is connected with the second connection terminal, and residual current transformer is arranged at phase line with zero line mutually near place, and phase line and zero line are through residual current transformer.
Preferably, relay and residual current transformer integrative packaging.Optimize internal wiring structure, reduce Electrical Safety hidden danger, improve electricity consumption reliability.
Preferably, be provided with encapsulating shell in described housing, described relay and residual current transformer are arranged in encapsulating shell, and described encapsulating shell lower end is fixedly connected with sheet metal, and described encapsulating shell is fixed by sheet metal and terminal block.Realize the integrative packaging of relay and residual current transformer, optimize internal wiring structure, reduce Electrical Safety hidden danger, improve electricity consumption reliability, be connected with terminal block by sheet metal, easy for installation, sheet metal can be used as web member and phase line is electrically connected with terminal block or is electrically connected with terminal block by zero line.
Following Advantageous Effects can be obtained by implementing the utility model:
Complete Real-Time Monitoring residual current, can carry out early warning to residual electricity flow valuve, and record intelligent electric meter residual current event, and active reporting, be updated to active investigation mode by passive for tradition investigation electric leakage mode.Integrative installation technology, optimizes internal wiring structure, reduces Electrical Safety hidden danger, improves electricity consumption reliability.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the connection layout of residual current transformer, amplifier, comparer, single-chip microcomputer in the utility model;
Fig. 3 is the syndeton schematic diagram of the utility model encapsulating shell and relay, residual current transformer;
Fig. 4 is the structural representation of fixed part when fixed part does not place residual current transformer in the utility model;
The structural representation of fixed part when Fig. 5 is fixed part placement residual current transformer in the utility model;
Embodiment
For the ease of the understanding of those skilled in the art, below in conjunction with specific embodiment, the utility model is further described:
As shown in Fig. 1 ~ Fig. 2, based on the single-phase intelligent electric energy meter of Real-time Collection residual current technology, comprise housing 1, terminal block 2, phase line 3, zero line 4; Terminal block 2 comprises the first connection terminal 21, second connection terminal 22, the 3rd connection terminal 23 and the 4th connection terminal 24; Terminal block 2 is fixedly mounted on housing 1; Phase line 3 and zero line 4 are arranged in housing 1; One end of zero line 4 is electrically connected with the 3rd connection terminal 23; The other end of zero line 4 is electrically connected with the 4th connection terminal 24; Electric energy meter also comprises relay 5, phase line current sampling resistor 6, residual current transformer 7 for controlling phase line break-make; Relay 5 comprises contact, and the contact of relay is arranged in phase line to control the break-make of phase line.
Relay 5, phase line current sampling resistor 6 and residual current transformer 7 are all arranged in housing 1; Phase line current sampling resistor 6 is arranged in phase line 3; One end (end of incoming cables) of phase line is connected with the first connection terminal 21, the other end (leading-out terminal) of phase line is connected with the second connection terminal 22, zero line 4 is mutually close with phase line 3, residual current transformer 7 is positioned over phase line 3 with zero line 4 mutually near place, and phase line 3 and zero line 4 are through residual current transformer 7;
Also comprise:
Amplifier, the input end of amplifier is connected with the output terminal 11 of residual current transformer 7, the output signal of residual current transformer 7 is amplified;
Comparer, the input end of comparer is connected with the output terminal of amplifier, compares and exports compare result signal after the output signal 11 of residual current transformer 7 is amplified as input and the threshold value preset;
Single-chip microcomputer, single-chip microcomputer comprises middle fracture, and the middle fracture of single-chip microcomputer is connected with the output terminal of comparer, and the output terminal of single-chip microcomputer connects the control line 9 of relay, single-chip microcomputer according in the compare result signal output relay control signal of fracture reception.Relay controls phase line 3 break-make according to relay control signal.
The consumer of Electricity customers is when switch accesses, if the transformer leakage protector action of platform district can be caused when having electric leakage, after earth leakage protective device tripping, after a while can automatic closing again, the consumer leaked electricity in this process may would not access electrical network, again automatic closing success, which electricity consumer such unit-area management personnel cannot locate there is electrical leakage problems, also just cannot fix a breakdown at all, when leak electricity equipment again connecting system time, also again there will be earth leakage protective device action, so repeatedly, contradiction is caused between power supply enterprise and electricity consumer, cause certain economic loss and potential safety hazard.After adopting this programme, residual current current transformer output signal is amplified by amplifier, the reference threshold comparison of the signal after amplification and comparer, in real time residual electricity flow valuve and the threshold value preset are compared, if residual electricity flow valuve does not exceed threshold value, then comparer exports non-disruptive signal, the continuous open relay of single-chip microcomputer; Once residual electricity flow valuve exceedes threshold value, comparer exports look-at-me to singlechip interruption interface, after single-chip microcomputer receives look-at-me, and real-time response process, and pilot relay disconnects phase line; Also can according to inner setting, undertaken tripping by pilot relay or not trip operation, record the time of the generation that current leakage current transfinites simultaneously, residual electricity flow valuve and some correlation parameters this moment, the data of record by communication port copy reading or by time showing on the display apparatus or active reporting, also can carry out corresponding early warning operation, prompting has electric leakage to occur.When needing the threshold value adjusting comparer, issue corresponding threshold value by the communication port of intelligent electric meter, single-chip microcomputer regulates the pulsewidth of PWM or timer according to the threshold value issued, thus changes reference voltage threshold.This programme can ensure maximum real-time, and not by computation chip passage, by special designs passage, once exceed threshold values, initiatively export corresponding look-at-me to single-chip microcomputer, single-chip microcomputer can process in real time, there is not the situation of leakage.
In order to realize the integrative packaging of relay and residual current transformer, optimize internal wiring structure, reduce Electrical Safety hidden danger, improve electricity consumption reliability, as shown in Figure 1, be provided with encapsulating shell 8 in housing, relay and residual current transformer are arranged in encapsulating shell 8, encapsulating shell 8 lower end is fixedly connected with sheet metal 81, and encapsulating shell is fixed by sheet metal 81 and terminal block.Be connected with terminal block by sheet metal 81, easy for installation, sheet metal 81 can be used as web member and phase line is electrically connected with terminal block or is electrically connected with terminal block by zero line.
As Fig. 1, shown in Fig. 3 ~ Fig. 5, in order to energy is more convenient, stable fixing residual current transformer 7, zero line 4 and phase line 3, be provided with in the middle part of encapsulating shell 8 front surface for fixing zero line 4, the fixed part of phase line 3 and residual current transformer 7, fixed part comprises the upper slide 901 be slidably arranged on up and down on encapsulating shell 8 and the lower skateboard 902 be slidably arranged on up and down on encapsulating shell 8, lower skateboard 902 is positioned at upper slide 901 lower end, upper slide 901 upper end is provided with the upper mounted plate 903 be horizontally installed on encapsulating shell 8, spring 904 is provided with between upper mounted plate 903 and upper slide 901, upper spring 904 upper end is fixedly connected with upper mounted plate 903, lower end is fixedly connected with upper slide 901, lower skateboard 902 lower end is provided with the bottom plate 905 be horizontally installed on encapsulating shell 8, lower spring 906 is provided with between lower skateboard 902 and bottom plate 905, lower spring 906 lower end is fixedly connected with bottom plate 905, upper end is connected with lower skateboard 902.
Upper slide 901 two ends are equipped with the upper circuit fixing device 91 for fixing zero line 4 or phase line 3, encapsulating shell 8 is positioned at above upper slide 901 to be located vertically to be fixed with the upper deflector apron 92 corresponding with upper circuit fixing device 91 position, upper circuit fixing device 91 comprises the upper straight rod 911 be vertically fixed on upper slide 901, upper straight rod 911 is rotatably connected to upper thread jamming part 912 away from that one end of upper slide 901, upper thread jamming part 912 comprise top from top to bottom towards the upper inclined portion 9121 of upper slide 901 lopsidedness, the opening upper semi-circle arc Access Division 9122 forward of bottom, be rotationally connected with upper straight rod 911 in the middle part of upper thread jamming part, upper inclined portion 9121 is semicircular arc towards upper that one end of deflector apron 92, upper deflector apron 92 is provided with upper gathering sill 921 towards that side of upper circuit fixing device 91, upper gathering sill 921 anterior-posterior length is greater than the length of upper inclined portion 9121, upper gathering sill 921 tilts from front to back obliquely, upper gathering sill 921 front position is positioned at above upper inclined portion 9121.
Lower skateboard 902 two ends are equipped with the line stationary installation 93 for fixing zero line 4 or phase line 3, encapsulating shell 8 is positioned at below lower skateboard 902 to be located vertically to be fixed with the lower deflector apron 94 corresponding with line stationary installation 93 position, line stationary installation 93 comprises the lower straight-bar 931 be vertically fixed on lower skateboard 902, lower straight-bar 931 is rotatably connected to lower card line portion 932 away from that one end of lower skateboard 902, lower card line portion 932 comprises the portion that has a down dip 9321 of slide plate 902 lopsidedness that faces down from top to bottom of bottom, the opening lower half circle arc Access Division 9322 forward on top, be rotationally connected with lower straight-bar 931 in the middle part of lower card line portion, that one end of deflector apron 94 that faces down, portion 9321 that has a down dip is semicircular arc, face down that side of circuit fixing device 93 of lower deflector apron 94 is provided with lower gathering sill 941, lower gathering sill 941 anterior-posterior length is greater than the length in the portion of having a down dip 9321, lower gathering sill 941 tilts from front to back obliquely, lower gathering sill 941 front position is positioned at below the portion of having a down dip 9321.
As shown in Figure 4, under original state, distance between upper slide 901 and lower skateboard 902 is less than the thickness of residual current transformer 7, first zero line 4 and phase line 3 are placed on corresponding upper semi-circle arc Access Division 9122 and lower half circle arc Access Division 9322, by upper slide 901 upward sliding, by lower skateboard 902 slide downward, then residual current transformer 7 is inserted between upper slide 901 and lower skateboard 902, upper spring 904 pairs of upper slides 901 have downward elastic force, lower spring 906 pairs of lower skateboards 902 have elastic force upwards, thus step up residual current transformer, in order to better fix residual current transformer, upper slide 901 lower end and lower skateboard 902 upper end are equipped with rubber blanket, upper slide 901 upper surface two ends are provided with downward extension, lower skateboard 902 lower surface two ends are provided with extension upwards, by extension, residual current transformer two ends are stepped up, now, as shown in Figure 5, under the effect of upper inclined portion 9121 because of upper gathering sill 921, upper inclined portion 9121 is rotated to encapsulating shell direction, and then drive upper semi-circle arc Access Division 9122 to rotate, upper semi-circle arc Access Division 9122 is near upper deflector apron 92, to be coordinated with upper semi-circle arc Access Division 9122 by upper deflector apron 92 and zero line 4 or phase line 3 are stepped up, when stepping up zero line 4 or phase line 3, upper straight rod 911 cannot move up, and be subject to the downward acting force of thread jamming part 912, and then upper straight rod 911 pairs of upper slides 901 apply downward acting force, in like manner lower skateboard 902 is subject to lower straight-bar 931 to its acting force upwards, and then improve upper slide 901 and lower skateboard 902 pairs of residual current transformers step up effect, zero line or phase line are also fixed by lower card line portion 932 simultaneously, and, if do not take out residual current transformer, lower card line portion 932 and upper thread jamming part 912 all cannot rotate, zero line and live wire are fixed by upper circuit fixing device 91 and line stationary installation 93, and when taking out residual current transformer, upper slide 901 is subject to the acting force slide downward of spring, lower skateboard 902 is subject to the acting force upward sliding of spring, now lower card line portion 932 and upper thread jamming part 912 all rotatable, can directly by zero line and phase line pull-out, operation is very easy, zero line and phase line fixing-stable, improve the Detection results of residual current transformer.
In order to better fix zero line, being connected with extension plate on the right side of upper slide, being connected with lower extension plate on the right side of lower skateboard, upper extension plate is provided with right side and is provided with circuit fixing device, is provided with line stationary installation on the right side of lower extension plate.
The residual current in single-phase electrical system can be detected in real time; increase intelligent electric meter residual current logout and active reporting function; solve residual current operated protective device and can only carry out trip protection when residual current transfinites; the problem of early warning and Real-Time Monitoring cannot be carried out, and passive for tradition investigation electric leakage mode is updated to active investigation mode.
The foregoing is only specific embodiment of the utility model, but technical characteristic of the present utility model is not limited thereto, any those skilled in the art is in field of the present utility model, and the change done or modification are all encompassed among the scope of the claims of the present utility model.
Claims (6)
1. based on the single-phase intelligent electric energy meter of Real-time Collection residual current technology, comprise housing, terminal block, phase line, zero line, for control phase line break-make relay, for measuring the residual current transformer of residual current, terminal block is fixedly mounted on housing; Relay, residual current transformer, phase line and zero line are arranged in housing, it is characterized in that, also comprise:
Amplifier, the input end of described amplifier is connected with the output terminal of residual current transformer, the output signal of residual current transformer is amplified;
Comparer, the input end of described comparer is connected with the output terminal of amplifier, compares and exports compare result signal after the output signal of residual current transformer is amplified as input and the reference threshold preset;
Single-chip microcomputer, described single-chip microcomputer comprises middle fracture, and the middle fracture of single-chip microcomputer is connected with the output terminal of comparer, and the output terminal of single-chip microcomputer connects the control line of relay, single-chip microcomputer according in the compare result signal output relay control signal of fracture reception.
2., as claimed in claim 1 based on the single-phase intelligent electric energy meter of Real-time Collection residual current technology, it is characterized in that: described relay comprises contact, the contact of described relay is arranged in phase line to control the break-make of phase line.
3. as claimed in claim 1 based on the single-phase intelligent electric energy meter of Real-time Collection residual current technology, it is characterized in that: the PWM of described single-chip microcomputer or timer output end mouth are connected with comparator reference threshold value input port, described single-chip microcomputer regulates the reference threshold of comparer by PWM or timer.
4., as claimed in claim 1 based on the single-phase intelligent electric energy meter of Real-time Collection residual current technology, it is characterized in that: described terminal block comprises the first connection terminal, the second connection terminal, the 3rd connection terminal and the 4th connection terminal; One end of zero line is electrically connected with the 3rd connection terminal; The other end of zero line is electrically connected with the 4th connection terminal; One end of phase line is connected with the first connection terminal, and the other end of phase line is connected with the second connection terminal, and described residual current transformer is arranged at phase line with zero line mutually near place, and phase line and zero line are through residual current transformer.
5., as claimed in claim 1 based on the single-phase intelligent electric energy meter of Real-time Collection residual current technology, it is characterized in that: relay and residual current transformer integrative packaging.
6. as claimed in claim 1 based on the single-phase intelligent electric energy meter of Real-time Collection residual current technology, it is characterized in that: in described housing, be provided with encapsulating shell, described relay and residual current transformer are arranged in encapsulating shell, described encapsulating shell lower end is fixedly connected with sheet metal, and described encapsulating shell is fixed by sheet metal and terminal block.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520964209.XU CN205120777U (en) | 2015-11-27 | 2015-11-27 | Single -phase intelligent ammeter based on gather residual current technique in real time |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520964209.XU CN205120777U (en) | 2015-11-27 | 2015-11-27 | Single -phase intelligent ammeter based on gather residual current technique in real time |
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| CN205120777U true CN205120777U (en) | 2016-03-30 |
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| CN201520964209.XU Expired - Fee Related CN205120777U (en) | 2015-11-27 | 2015-11-27 | Single -phase intelligent ammeter based on gather residual current technique in real time |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105403742A (en) * | 2015-11-27 | 2016-03-16 | 浙江八达电子仪表有限公司 | Single-phase intelligent electric energy meter based on real-time residual current collection technology |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105403742A (en) * | 2015-11-27 | 2016-03-16 | 浙江八达电子仪表有限公司 | Single-phase intelligent electric energy meter based on real-time residual current collection technology |
| CN105403742B (en) * | 2015-11-27 | 2018-03-16 | 浙江八达电子仪表有限公司 | Single-phase intelligent electric energy meter based on real-time collection residual current technology |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160330 Termination date: 20191127 |
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| CF01 | Termination of patent right due to non-payment of annual fee |