CN105424998A - Three-phase intelligent electric energy meter base on real-time residual current acquisition technology - Google Patents

Abstract

The invention aims at solving problems existing in prior art and thus provides a three-phase intelligent electric energy meter base on a real-time residual current acquisition technology to carry out active electricity leakage trouble shooting. The three-phase intelligent electric energy meter comprises a housing; a wiring terminal seat is installed on the housing; and a residual-current transformer, an A-phase line, a B-phase line, a C-phase line, a zero line, and a relay are arranged in the housing; and the A-phase line, the B-phase line, the C-phase line, and the zero line pass through the residual-current transformer. In addition, the three-phase intelligent electric energy meter also includes an amplifier, a comparator, and a single-chip microcomputer. The input terminal of the amplifier is connected with the output terminal of the residual-current transformer. The input terminal of the comparator is connected with the output terminal of the amplifier; the comparator compares a residual current value with a preset threshold value; when the residual current is larger than a threshold value, the output terminal of the comparator outputs a comparison result signal. An interruption port of the single-chip microcomputer is connected with the output terminal of the comparator and the output terminal of the single-chip microcomputer is connected with a control line of a relay; and the single-chip microcomputer outputs a relay control signal according to the comparison result signal received by the interruption port. Therefore, the real-time performance of troubleshooting is improved.

Description

Three-phase smart energy meter based on real-time acquisition of residual current technology

technical field

The invention belongs to the field of electric power, in particular to a three-phase intelligent electric energy meter based on the technology of collecting residual current in real time.

Background technique

The invention with the publication number CN104374964A discloses an electric energy meter capable of measuring residual current, including a housing, a terminal block, a phase line, a neutral line, a relay, a phase line current sampling resistor, a residual current transformer and a circuit device; the relay The current sampling resistor of the phase line and the residual current transformer are all arranged in the housing; the phase line and the neutral line pass through the residual current transformer; the circuit device includes a voltage sampling module, a signal processing module, an A/D conversion module, an electric energy metering module, Single-chip processing module, relay control module, communication module, LCD display module, button module and power supply module. This invention can realize the measurement and recording of the residual current in the user line, and has the function of alarm event and event recording of the excess current of the residual current. It only needs to be improved on the existing smart meter, and the improvement cost is not high and does not affect The functions and dimensions of the existing electric energy meter are convenient for large-scale promotion. The disadvantages are: the electric energy meter cannot be used in the three-phase power system, and the real-time performance is not strong. For the smart electric energy meter, it realizes many complex functions. The single-task operating system cannot switch between tasks freely in real time, and the residual current value is passively obtained for the microcontroller. The original method cannot read the residual current value in real time, only when the microcontroller switches to the task of reading the remaining current value of the metering chip. , the single-chip microcomputer can judge whether the value exceeds the threshold, and for the essence of residual current detection, the leakage itself is random and sudden. If the interrupt method is not used, it is inevitable that the leakage cannot be captured in real time.

Contents of the invention

The purpose of the present invention is to solve the existing problems in the prior art, to find a three-phase smart electric energy meter based on real-time collection of residual current technology, which can detect the residual current in the three-phase power system in real time, and update the traditional passive leakage checking method It is a proactive screening method to improve the real-time performance of the screening.

In order to achieve the purpose, the present invention is a three-phase smart electric energy meter based on the technology of collecting residual current in real time, including a housing on which a terminal block is installed, and a residual current transformer, A phase line, B phase Line, C-phase line, neutral line and the relay used to control the on-off of A-phase line, B-phase line, and C-phase line, A-phase line, B-phase line, C-phase line, and neutral line pass through the residual current transformer, A The two ends of the phase line, the two ends of the B phase line, the two ends of the C phase line, and the two ends of the neutral line are connected to the terminal block, including:

an amplifier, the input terminal of the amplifier is connected to the output terminal of the residual current transformer, and the output signal of the residual current transformer is amplified;

A comparator, the input terminal of the comparator is connected with the output terminal of the amplifier, and the output signal of the residual current transformer is amplified as an input to compare with a preset reference threshold and output a comparison result signal;

The single-chip microcomputer includes an interrupt port, the interrupt port of the single-chip microcomputer is connected with the output end of the comparator, the output end of the single-chip microcomputer is connected with the control line of the relay, and the single-chip microcomputer outputs the relay control signal according to the comparison result signal received by the interrupt port.

Preferably, the relay includes three contacts, one contact is provided on each of the A-phase line, B-phase line, and C-phase line. The relay controls the on-off of the corresponding A-phase line, B-phase line, and C-phase line through contacts.

Preferably, after the interrupt port of the single-chip microcomputer receives the comparison result signal output by the comparator, the single-chip microcomputer records the time when the leakage current exceeds the limit, the value of the leakage current, and the power value at the moment. It can read through the communication port or display the time on the display device or actively report it, and it can also give an early warning prompt.

Preferably, the single-chip microcomputer is provided with a PWM or timer output port, and the comparator is provided with an external threshold reference value input port, and the PWM or timer output port is connected with the reference value input port, and the single-chip microcomputer adjusts and compares the threshold value through the pulse width modulation mode of the PWM or timer. The threshold of the device, thereby adjusting the leakage current detection threshold.

Preferably, the connection terminal block includes a first connection terminal, a second connection terminal, a third connection terminal, a fourth connection terminal, a fifth connection terminal, a sixth connection terminal, a seventh connection terminal and an eighth connection terminal. One end is electrically connected to the seventh terminal; the other end of the neutral line is electrically connected to the eighth terminal; one end of the A-phase line is electrically connected to the first terminal, and the other end is electrically connected to the second terminal; one end of the B-phase line It is electrically connected to the third terminal, and the other end is electrically connected to the fourth terminal; one end of the C-phase line is electrically connected to the fifth terminal, and the other end is electrically connected to the sixth terminal.

Preferably, the seventh connection terminal and the eighth connection terminal are isolated from each other.

Preferably, the relay and the residual current transformer are integrally packaged. Optimize the internal wiring structure, reduce potential safety hazards in power consumption, and improve power reliability.

Preferably, an encapsulation shell is provided in the housing, the relay and the residual current transformer are arranged in the encapsulation shell, a metal sheet is fixedly connected to the lower end of the encapsulation shell, and the encapsulation shell is fixed to the terminal block through the metal sheet. Realize the integrated packaging of the relay and the residual current transformer, optimize the internal wiring structure, reduce the potential safety hazards of electricity use, and improve the reliability of electricity use. It is connected with the terminal block through the metal sheet, which is convenient for installation. Line, B-phase line, C-phase line or neutral line are electrically connected to the terminal block.

Preferably, a fixing part for fixing the A-phase line is provided inside the packaging case, and the fixing part includes an upper sliding plate slidable up and down on the packaging case and a lower sliding plate vertically slidable on the packaging case, the The lower plate is located at the lower end of the upper slide plate, and the upper end of the upper slide plate is provided with an upper fixed plate arranged transversely on the package shell, and an upper spring is arranged between the upper fixed plate and the upper slide plate, and the upper end of the upper spring is fixed to the upper fixed plate connection, the lower end is fixedly connected with the upper slide plate, the lower end of the lower slide plate is provided with a lower fixed plate arranged transversely on the package shell, a lower spring is provided between the lower slide plate and the lower fixed plate, and the lower end of the lower spring is fixed with the lower fixed plate. The plate is fixedly connected, and the upper end is connected with the lower plate. It is convenient to fix the residual current transformer and A-phase line.

Preferably, an upper line fixing device for the A-phase line is provided on the upper sliding plate, and an upper guide baffle corresponding to the position of the upper line fixing device is vertically fixed on the upper part of the package shell above the upper sliding plate, and the upper line The fixing device includes an upper straight bar vertically fixed on the upper slide plate, and the end of the upper straight bar away from the upper slide plate is rotatably connected with an upper clamping line part, and the upper clamping line part includes an upper part that is inclined from bottom to top to the side of the upper slide plate. The upper inclined part of the upper part and the upper semicircular arc-shaped clamping part with the opening of the lower part facing forward. The side of the baffle plate facing the upper line fixing device is provided with an upper guide groove, the front and rear length of the upper guide groove is greater than the length of the upper inclined part, the upper guide groove is inclined upward from front to back, and the front end position of the upper guide groove is located above the upper slope;

A lower line fixing device for fixing the A-phase line is arranged on the lower sliding plate, and a lower guide baffle corresponding to the position of the lower line fixing device is vertically fixed on the lower side of the package shell under the lower sliding plate, and the lower line fixing device It includes a lower straight rod vertically fixed on the sliding board, and the end of the lower straight rod away from the sliding board is rotatably connected with a lower clamping part, and the lower clamping part includes a lower part inclined from top to bottom to one side of the sliding board. The opening of the inclined part and the upper part faces forward and the lower semi-arc clamping part, the middle part of the lower clamping part is rotatably connected with the lower straight rod, and the end of the lower inclined part facing the downward guide baffle is semicircular arc-shaped, and the lower guide baffle faces The side of the lower line fixing device is provided with a lower guide groove, the front and rear length of the lower guide groove is greater than the length of the lower slope, the lower guide groove is inclined downward from front to back, and the front end of the lower guide groove is located at the below the slope. The phase line and neutral line can be fixed conveniently through the upper and lower line fixing devices to prevent them from moving, and the upper and lower line fixing devices can provide a force to the upper and lower plates to further tighten the residual current transformer.

By implementing the present invention, the following beneficial technical effects can be obtained: the residual current can be monitored completely in real time, the residual current value can be warned, the residual current event of the smart meter is recorded, and the event is actively reported, and the traditional passive leakage checking method is updated to an active checking method. Integrated installation, optimize the internal wiring structure, reduce potential safety hazards in power consumption, and improve power reliability.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the connection diagram of residual current transformer, amplifier, comparator, single-chip microcomputer among the present invention;

Fig. 3 is the improved structural representation of the present invention;

Fig. 4 is a structural schematic diagram of the fixed part when no residual current transformer is placed in the fixed part in the present invention;

Fig. 5 is a schematic structural diagram of the fixed part when the residual current transformer is placed in the fixed part in the present invention.

detailed description

In order to facilitate the understanding of those skilled in the art, the present invention will be further described below in conjunction with specific embodiments:

As shown in Figures 1 to 3, the three-phase smart energy meter based on real-time acquisition of residual current technology includes a housing 1, on which a terminal block 2 is installed, and a relay 3 and a residual current mutual inductance are installed in the housing 1 4, A phase line 5, B phase line 6, C phase line 7 and zero line 8, A phase line 5, B phase line 6, C phase line 7, and zero line 8 pass through the residual current transformer 4; terminal block The seat 2 includes a first connection terminal 21, a second connection terminal 22, a third connection terminal 23, a fourth connection terminal 24, a fifth connection terminal 25, a sixth connection terminal 26, a seventh connection terminal 27 and an eighth connection terminal 28 , one end (incoming wire end) of A-phase wire 5 is electrically connected with the first terminal 21, and the other end (outgoing wire end) is electrically connected with the second connecting terminal 22; one end (incoming wire end) of B-phase wire 6 is connected with the third Terminal 23 is electrically connected, and the other end (outlet terminal) is electrically connected to fourth terminal 24; one end (incoming terminal) of C-phase line 7 is electrically connected to fifth terminal 25, and the other end (outgoing terminal) is electrically connected to the sixth Terminal 26 is electrically connected, one end (incoming line end) of zero line 8 is electrically connected to seventh terminal 27, the other end (outlet end) of neutral line 8 is electrically connected to eighth terminal 28, and seventh terminal 27 is electrically connected to terminal 28. The eighth connecting terminals 28 are mutually isolated, and the relay 3 includes three contacts 31, one contact 31 is respectively arranged on the A phase line 5, the B phase line 6, and the C phase line 7, and the contacts 31 are all normally closed contacts, which can The on-off of the A-phase line 5, B-phase line 6, and C-phase line 7 is controlled by the contact 31 of the relay 3, the A-phase current transformer 11 is arranged on the A-phase line, and the B-phase current transformer is arranged on the B-phase line 12. A C-phase current transformer 13 is arranged on the C-phase line. The three-phase smart energy meter based on the real-time collection of residual current technology also includes: an amplifier, the input terminal of the amplifier and the output terminal 41 (output line) of the residual current transformer 4 connected, the amplifier amplifies the output signal of the residual current transformer 4; the comparator, the input terminal of the comparator is connected with the output terminal of the amplifier, and the output signal of the residual current transformer is amplified as an input for comparison with a preset threshold value and Output comparison result signal, comparison result signal comprises interrupt signal and non-interrupt signal; Single-chip microcomputer, single-chip microcomputer comprises interrupt port, and the interrupt port of single-chip microcomputer is connected with the output end of comparator, and the output end of single-chip microcomputer is connected the control line 32 of relay 3, and single-chip microcomputer is interrupted according to The comparison result signal received by the port outputs a relay control signal, and the relay 3 controls the on-off of the A-phase line 5, B-phase line 6, and C-phase line 7 after receiving the control signal from the single-chip microcomputer.

The single-chip microcomputer has a PWM or timer output port, and the comparator has an external threshold reference value input port. The PWM or timer output port is connected to the reference value input port. , so as to adjust the leakage current detection threshold.

When the customer’s electrical equipment is connected to the switch, if there is a leakage, it will cause the leakage protector of the transformer in the station area to operate. After the leakage protector trips, it will automatically close again after a period of time. During this process, the leakage The electrical equipment may not be connected to the power grid, and it will be automatically closed again. In this way, the management personnel of the station area cannot locate which electrical household has a leakage problem, and cannot fundamentally eliminate the fault. When the leakage equipment is connected to the system again, Leakage protector action problem also can occur again, so repeatedly, cause contradiction between power supply enterprise and electricity consumer, cause certain economic loss and potential safety hazard. After adopting this scheme, the amplifier amplifies the output signal of the residual current transformer, compares the amplified signal with the reference threshold value of the comparator, and compares the residual current value with the preset threshold value in real time. If the residual current value does not exceed the threshold value, Then the comparator outputs a non-interrupt signal, and the microcontroller does not control the disconnection of the relay contact; once the residual current value exceeds the threshold, the comparator outputs an interrupt signal to the interrupt interface of the microcontroller, and the microcontroller responds in real time after receiving the interrupt signal, and controls the relay contact point disconnection; according to the internal setting, the tripping or non-tripping operation can be performed by controlling the relay, and at the same time, the time when the current leakage current exceeds the limit, the residual current value and some relevant parameters at the moment can be recorded. The recorded data can be communicated Orally read or display the time on the display device or report it actively, and also perform corresponding early warning operations to prompt that there is a leakage. When the threshold value of the comparator needs to be adjusted, the corresponding threshold value is issued through the communication port of the smart meter, and the single-chip microcomputer adjusts the pulse width of the PWM/timer according to the issued threshold value, thereby changing the reference voltage threshold value. This solution can guarantee the maximum real-time performance, without using the metering chip channel, through the dedicated design channel, once the threshold is exceeded, the corresponding interrupt signal will be actively output to the single-chip microcomputer, and the single-chip microcomputer can process it in real time, and there is no missed capture.

As shown in Figure 1, a package case 14 is provided in the housing, and the relay 3 and the residual current transformer 4 are arranged in the package case 14. The lower end of the package case 14 is fixedly connected with a metal sheet 141, and the package case 14 is connected to the connecting terminal through the metal sheet 141. Seat 2 is fixed. Realize the integrated packaging of the relay 3 and the residual current transformer 4, optimize the internal wiring structure, reduce hidden dangers in power consumption, improve power reliability, and connect the terminal block 2 through the metal sheet 141, which is convenient for installation; the metal sheet 141 can be used as The connector electrically connects the A-phase line, the B-phase line, the C-phase line or the neutral line to the terminal block 2. Taking the A-phase line as an example, one end of the metal sheet 141 is fixed to the lower end of the A-phase line of the package shell 14. The metal sheet The other end of 141 is connected to the second terminal 22 in the terminal block, and the metal sheet 141 can be used as a part of the A-phase line after connection; similarly, the B-phase line, C-phase line, and neutral line can also be connected to the corresponding line through the metal sheet. The terminals are electrically connected.

As shown in Figure 3, in order to fix the relay 3 and the residual current transformer 4 more conveniently and stably, the relay 3 and the residual current transformer 4 are both arranged in the package

As shown in Figures 3 to 5, in order to more conveniently and stably fix the residual current transformer and the A-phase line, a fixing part 9 for fixing the A-phase line 5 is provided in the package shell, and the fixing part includes a vertically slidable set in the package The upper sliding plate 901 on the shell 14 and the lower sliding plate 902 slidably arranged on the packaging shell 14 up and down, the lower sliding plate 902 is located at the lower end of the upper sliding plate 901, and the upper end of the upper sliding plate 901 is provided with an upper fixing plate 903 arranged transversely on the packaging shell 14, An upper spring 904 is arranged between the upper fixing plate 903 and the upper sliding plate 901. The upper end of the upper spring 904 is fixedly connected to the upper fixing plate 903, and the lower end is fixedly connected to the upper sliding plate 901. A lower spring 906 is arranged between the lower fixed plate 905 , the lower plate 902 and the lower fixed plate 905 , the lower end of the lower spring 906 is fixedly connected with the lower fixed plate 905 , and the upper end is connected with the lower plate 902 .

As shown in Figure 4, the upper slide 901 is provided with an upper line fixing device 91 for fixing the A-phase line, and the package shell 14 is vertically fixed above the upper slide 901 with an upper guide baffle corresponding to the position of the upper line fixing device 91 92. The upper line fixing device 91 includes an upper straight rod 911 vertically fixed on the upper sliding plate 901. The end of the upper straight rod 911 away from the upper sliding plate 901 is rotatably connected with an upper clamping part 912. The upper clamping part 912 includes an upper part from the bottom. Go up to the upper inclined part 9121 that is inclined to the side of the upward sliding plate 901, the upper semi-arc-shaped clamping part 9122 with the opening of the lower part facing forward, the middle part of the upper clamping part is rotationally connected with the upper straight rod 911, and the upper inclined part 9121 faces the upward guide gear The end of the plate 92 is semicircular arc-shaped, and the upper guide baffle plate 92 is provided with an upper guide groove 921 on the side facing the upper line fixing device 91. The front and rear length of the upper guide groove 921 is greater than the length of the upper inclined part 9121. When the rear slope is inclined upward, the front end of the upper guide groove 921 is located above the upper inclined portion 9121 .

As shown in FIG. 4 , both ends of the sliding plate 902 are provided with a lower line fixing device 93 for the A-phase line, and the package shell 14 is located below the sliding plate 902 and is vertically fixed with a lower guide rail corresponding to the position of the lower line fixing device 93 Plate 94, the lower line fixing device 93 includes a lower straight bar 931 vertically fixed on the lower plate 902, the end of the lower straight bar 931 away from the lower plate 902 is rotatably connected with a lower clamping part 932, and the lower clamping part 932 includes a lower part from the upper part. Go down to the lower inclined part 9321 which is inclined towards the side of the sliding plate 902, and the lower semi-arc-shaped clamping part 9322 with the upper opening facing forward. The end of the baffle plate 94 is semicircular arc-shaped, and the side of the lower guide baffle plate 94 facing the lower line fixing device 93 is provided with a lower guide groove 941. The front end of the lower guide groove 941 is located below the lower inclined portion 9321 .

As shown in Figure 4, in the initial state, the distance between the upper slide plate 901 and the lower slide plate 902 is smaller than the thickness of the residual current transformer. Slide the upper slide 901 upwards, slide the lower slide 902 downward, then insert the residual current transformer 7 between the upper slide 901 and the lower slide 902, and the upper spring 904 has a downward direction against the upper slide 901. The lower spring 906 has an upward elastic force on the lower plate 902, thereby tightening the residual current transformer. In order to better fix the residual current transformer, rubber pads are provided at the lower end of the upper slide plate 901 and the upper end of the lower plate 902. The upper slide plate 901 Both ends of the upper surface are provided with downward extensions, and both ends of the lower surface of the sliding plate 902 are provided with upward extensions, and the two ends of the residual current transformer are tightened by the extensions. At this time, as shown in Figure 5, the upper slope 9121 Under the action of the upper guide groove 921, the upper inclined part 9121 rotates toward the base plate, and then drives the upper semi-arc-shaped engaging part 9122 to rotate, and the upper semi-arc-shaped engaging part 9122 is close to the upper guide baffle plate 92, and passes through the upper guide baffle The plate 92 cooperates with the upper semi-arc clamping part 9122 to clamp the A-phase line 3. When the A-phase line is clamped, the upper straight rod 911 cannot move upward, and is subjected to the downward force of the upper clamping part 912, and then moves upward. The straight rod 911 exerts a downward force on the upper slide 901; similarly, the lower slide 902 receives an upward force from the lower straight rod 931, thereby improving the tightening effect of the upper slide 901 and the lower slide 902 on the residual current transformer, and at the same time The lower clamping part 932 also fixes the A-phase line, and if the residual current transformer is not taken out, neither the lower clamping part 932 nor the upper clamping part 912 can rotate, and the A live wire is held by the upper line fixing device 91 and the lower line fixing device. 93 is fixed, and when the residual current transformer is taken out, the upper sliding plate 901 slides downward under the active force of the spring, and the lower plate 902 slides upward under the active force of the spring. At this time, the lower clamping part 932 and the upper clamping part 912 are It can be rotated, and the A-phase line can be pulled out directly. The operation is very convenient. The neutral line and the phase line are fixed and stable, which improves the detection effect of the residual current transformer.

In the same way, fixing parts for fixing B-phase, C-phase and neutral line can be provided, and its structure is the same as that for fixing A-phase line.

The invention can detect the residual current in the three-phase power system in real time, increase the residual current event recording and active reporting functions of the smart meter, and solve the problem that the residual current protector can only perform trip protection when the residual current exceeds the limit fault, and cannot perform early warning and monitoring. Real-time monitoring of problems, and update the traditional passive leakage detection method to an active detection method.

The above are only specific embodiments of the present invention, but the technical characteristics of the present invention are not limited thereto, and any changes or modifications made by those skilled in the art within the scope of the present invention are covered by the patent scope of the present invention .

Claims (10)

1. based on the three-phase intelligent electric-energy meter of Real-time Collection residual current technology, comprise housing, it is characterized in that, described housing is provided with terminal block, residual current transformer, A phase line, B phase line, C phase line, zero line and the relay for control A phase line, B phase line, C phase line break-make is provided with in housing, A phase line two ends, B phase line two ends, C phase line two ends, zero line two ends are connected with terminal block, and A phase line, B phase line, C phase line, zero line, through residual current transformer, 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 three-phase intelligent electric-energy meter of Real-time Collection residual current technology, it is characterized in that: described relay comprises three contacts, described A phase line, B phase line, C phase line are respectively arranged a contact.

3. as claimed in claim 1 based on the three-phase intelligent electric-energy meter of Real-time Collection residual current technology, it is characterized in that: after singlechip interruption mouth receives the compare result signal that comparer exports, the time of origin that the current leakage current of single-chip microcomputer record transfinites, leakage current value size, charge value this moment.

4. as claimed in claim 1 based on the three-phase intelligent electric-energy meter of Real-time Collection residual current technology, it is characterized in that: described single-chip microcomputer is provided with PWM or timer output end mouth, described comparer is provided with outside threshold reference value input port, PWM or timer output end mouth are connected with reference value input port, described single-chip microcomputer passes through the threshold value of the pulse width modulation mode adjustment comparer of PWM or timer, thus regulates leakage current test threshold value.

5. as claimed in claim 1 based on the three-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, the 4th connection terminal, the 5th connection terminal, the 6th connection terminal, the 7th connection terminal and the 8th connection terminal, one end of zero line is electrically connected with the 7th connection terminal; The other end of zero line is electrically connected with the 8th connection terminal; One end of A phase line is electrically connected with the first connection terminal, and the other end is electrically connected with the second connection terminal; One end of B phase line is electrically connected with the 3rd connection terminal, and the other end is electrically connected with the 4th connection terminal; One end of C phase line is electrically connected with the 5th connection terminal, and the other end is electrically connected with the 6th connection terminal.

6., as claimed in claim 5 based on the three-phase intelligent electric-energy meter of Real-time Collection residual current technology, it is characterized in that: the 7th connection terminal and the 8th connection terminal mutually isolated.

7., as claimed in claim 1 based on the three-phase intelligent electric-energy meter of Real-time Collection residual current technology, it is characterized in that: relay and residual current transformer integrative packaging.

8. 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.

9. as claimed in claim 8 based on the three-phase intelligent electric-energy meter of Real-time Collection residual current technology, it is characterized in that: in described encapsulating shell, in the middle part of front surface, be provided with the fixed part for fixing A phase line, described fixed part comprises the upper slide slidably arranged up and down on the package and the lower skateboard slidably arranged up and down on the package, described lower skateboard is positioned at upper slide lower end, described upper slide upper end is provided with horizontally set upper mounted plate on the package, spring is provided with between fixed plate and upper slide, described upper spring upper end is fixedly connected with upper mounted plate, lower end is fixedly connected with upper slide, described lower skateboard lower end is provided with horizontally set bottom plate on the package, lower spring is provided with between described lower skateboard and bottom plate, described lower spring lower end is fixedly connected with bottom plate, upper end is connected with lower skateboard.

10. as claimed in claim 9 based on the three-phase intelligent electric-energy meter of Real-time Collection residual current technology, it is characterized in that: described upper slide is provided with the upper circuit fixing device for A phase line, described encapsulating shell is positioned at above upper slide to be located vertically to be fixed with the upper deflector apron corresponding with upper circuit fixing device position, described upper circuit fixing device comprises the upper straight rod be vertically fixed on upper slide, described upper straight rod is rotatably connected to upper thread jamming part away from that one end of upper slide, described upper thread jamming part comprise top from top to bottom towards the upper inclined portion of upper slide lopsidedness, the opening upper semi-circle arc Access Division forward of bottom, be rotationally connected with upper straight rod in the middle part of upper thread jamming part, upper inclined portion is semicircular arc towards that one end of upper deflector apron, described upper deflector apron is provided with upper gathering sill towards that side of upper circuit fixing device, described upper gathering sill anterior-posterior length is greater than the length of upper inclined portion, described upper gathering sill tilts from front to back obliquely, described upper gathering sill front position is positioned at above upper inclined portion,

Described lower skateboard is provided with the line stationary installation for fixing A phase line, described encapsulating shell is positioned at below lower skateboard to be located vertically to be fixed with the lower deflector apron corresponding with line stationary installation position, described line stationary installation comprises the lower straight-bar be vertically fixed on lower skateboard, described lower straight-bar is rotatably connected to lower card line portion away from that one end of lower skateboard, described lower card line portion comprises the portion that has a down dip of the slide plate lopsidedness that faces down from top to bottom of bottom, the opening lower half circle arc Access Division forward on top, be rotationally connected with lower straight-bar in the middle part of lower card line portion, that one end of deflector apron that faces down, the portion of having a down dip is semicircular arc, face down that side of circuit fixing device of described lower deflector apron is provided with lower gathering sill, described lower gathering sill anterior-posterior length is greater than the length in the portion of having a down dip, described lower gathering sill tilts from front to back obliquely, described lower gathering sill front position is positioned at below the portion of having a down dip.