阅读说明：本技术 一种智能分接线端子排 (Intelligent tapping line terminal row ) 是由 巴祎 廖霞 于 2019-09-30 设计创作，主要内容包括：本发明提出的一种智能分接线端子排,包括两部分；一次部分包括底座壳体,以及固定在其内通过相线金属排相连的相线输入接线端和多个相线输出接线端、通过零线金属排相连的零线输入接线端和多个零线输出接线端、多个电流传感器、电源接口和电流采集接口；二次部分包括顶盖壳体,以及固定在其内的电源、电压传感器、AD采集电路、MCU、物联网通信模块、同步对时/定位模块、RAM、RTC、LED显示灯、与一次部分对应的两类接口；两电源接口相连实现二次部分的电源供应及对一次部分供电侧电压的采集,两电流采集接口相连实现对一次部分各出线电流的采集。本智能分接线端子排可快速替换原有接线端子或母线排,便于后期二次部分更换及维护。(The invention provides an intelligent tapping line terminal row, which comprises two parts; the primary part comprises a base shell, a phase line input wiring terminal and a plurality of phase line output wiring terminals which are fixed in the base shell and connected through a phase line metal bar, a zero line input wiring terminal and a plurality of zero line output wiring terminals which are connected through a zero line metal bar, a plurality of current sensors, a power interface and a current acquisition interface; the secondary part comprises a top cover shell, a power supply, a voltage sensor, an AD acquisition circuit, an MCU, an Internet of things communication module, a synchronous time setting/positioning module, an RAM, an RTC, an LED display lamp and two types of interfaces corresponding to the primary part, wherein the power supply, the voltage sensor, the AD acquisition circuit, the MCU, the Internet of things communication module, the synchronous time setting/positioning module, the RAM, the RTC; the two power interfaces are connected to realize the power supply of the secondary part and the collection of the voltage of the power supply side of the primary part, and the two current collection interfaces are connected to realize the collection of the outgoing currents of the primary part. This intelligence tapping wiring terminal row can replace original binding post or generating line row fast, and the later stage secondary part of being convenient for is changed and is maintained.)

1. An intelligent tapping line terminal row is characterized by comprising a primary part and a secondary part which are detachably connected;

the primary part comprises a base shell, a phase line input wiring terminal and a plurality of phase line output wiring terminals which are fixed in the base shell and connected through a phase line metal row, a zero line input wiring terminal and a plurality of zero line output wiring terminals which are connected through a zero line metal row, a plurality of current sensors, a charged erasable programmable read-only memory, a primary part power interface, a primary part current acquisition interface and a primary part read-only memory interface; the phase line input wiring terminal and the zero line input wiring terminal are respectively connected to the power supply side through corresponding input wiring holes on the surface of the base shell, and are also respectively connected with the primary part power supply interface through corresponding metal bars; each phase line output terminal or the zero line output terminal corresponding to each phase line output terminal is respectively sleeved with a corresponding current sensor through an output wiring hole positioned on the surface of the base shell, and each phase line output terminal and each zero line output terminal are respectively connected with a corresponding phase line and a corresponding zero line on the power utilization side; each current sensor is connected with the primary partial current acquisition interface and is used for converting acquired current signals of each power utilization side into weak current signals; the electrified erasable programmable read-only memory is connected with a primary part read-only memory interface and is used for storing the topological information of the intelligent tapping line terminal row;

the secondary part comprises a top cover shell, and a power supply, a voltage sensor, an AD acquisition circuit, a microcontroller, an Internet of things communication module, a synchronous time setting/positioning module, a random access memory, a real-time clock, an LED display lamp, a secondary part power supply interface, a secondary part current acquisition interface and a secondary part read-only memory interface which are fixed in the top cover shell, wherein a voltage signal, a current signal and the topological information of an intelligent tapping line terminal row per se are transmitted between the primary part and the secondary part through the power supply interface, the current acquisition interface and the read-only memory interface which are arranged in the primary part and the secondary part respectively; the power supply is connected with the phase line metal bar and the zero line metal bar through a secondary power supply interface and a primary power supply interface in sequence and is used for obtaining power supply and supplying power to all devices in the secondary part when a power supply side fails; the AD acquisition circuit comprises an AD acquisition chip and two sampling resistors, wherein the AD acquisition chip is connected with the secondary part current acquisition interface through a first sampling resistor and is connected with the secondary part power supply interface through a second sampling resistor and the voltage sensor, and the AD acquisition chip and the secondary part power supply interface are respectively used for converting the acquired weak current signals at each power utilization side and the acquired voltage analog signals at the power supply side into corresponding voltage digital signals and transmitting the corresponding voltage digital signals to the microcontroller; the real-time clock is connected with the microcontroller and is used for providing current time information; the synchronous time setting/positioning module is connected with the microcontroller and is used for correcting the time information of the real-time clock and providing the geographical position information of the intelligent tapping line terminal row; the microcontroller is used for controlling the acquisition frequency of the AD acquisition chip, processing voltage digital signals transmitted by the AD acquisition chip, extracting each phase of fundamental wave voltage/current effective value and each phase of harmonic wave voltage/current effective value by combining current time and geographical position information, calculating full-wave voltage/current effective value, positive sequence voltage/current effective value, negative sequence voltage/current effective value, zero sequence voltage/current effective value, active power, reactive power and power consumption side electric quantity frozen value information, and analyzing the reason of the power supply fault if the power supply fault occurs; the microcontroller is connected with the secondary part memory interface and used for reading the self topological information of the intelligent tapping line terminal row stored in the electrified erasable programmable read-only memory, the microcontroller realizes the communication with the outside through the Internet of things communication module and expands the capacity of the memory through the random access memory; and the LED display lamp is connected with the microcontroller and is used for displaying the working state of the intelligent tapping line terminal row.

2. The intelligent tap terminal bar of claim 1 wherein the phase wire metal bar connected to the phase input terminal is single phase, two phase or three phase.

3. The intelligent tap wire terminal strip of claim 2 wherein said primary and secondary power interfaces, primary and secondary current collection interfaces, and primary and secondary rom interfaces are each connected by a corresponding connector; each power interface comprises a phase line port and a zero line port; each current acquisition interface comprises a plurality of outgoing line current signal ports.

4. The intelligent tapping line terminal strip according to claim 1, wherein topology information of the intelligent tapping line terminal strip itself is stored in a charged erasable programmable read-only memory in a primary part when the intelligent tapping line terminal strip leaves a factory, the topology information includes a phase line input terminal number, a phase line metal strip number, a zero line input terminal number, a zero line metal strip number, a phase line output terminal number, a zero line output terminal number, a current sensor number, a port number of a current collection interface, and a port number of a power supply interface, the phase line input terminal number corresponds to the phase line metal strip number, and the zero line input terminal number corresponds to the zero line metal strip number; the topological information also comprises a connection mapping relation between the phase line metal bar serial number and the phase line output terminal serial number, a connection mapping relation between the phase line output terminal serial number and the zero line output terminal serial number, a connection mapping relation between the phase line output terminal serial number and the current sensor serial number, a connection mapping relation between the zero line output terminal serial number and the current sensor serial number, a connection mapping relation between the current sensor and the port serial number of the current acquisition interface, and a connection mapping relation between the phase line metal bar and the port serial number of the power interface.

5. The intelligent tap wire terminal strip of claim 1 wherein said microcontroller analyzing causes of power failures includes:

when the voltage loss of each phase of the power interface is detected, the suddenly increased fault current of the current of an output wiring hole of a certain phase line is detected, and the current of the output wiring hole of the phase line is zero after the fault current occurs, the situation that the internal part of a user at the power utilization side connected with the output wiring hole of the phase line has a short-circuit fault is indicated, and the superior tripping of the intelligent tapping wiring terminal row is caused;

when the voltage loss of each phase of the power interface is detected and the suddenly increased fault current of the phase line output wiring hole is not detected, the power failure fault of the current power supply side is indicated;

when the voltage of a power interface is detected to be normal, and the current of an output wiring hole of a certain phase line is detected to have suddenly increased fault current, and the current of the output interface of the phase line is zero after the fault current occurs, the situation that a short-circuit fault occurs inside a user at a power utilization side connected with the output wiring hole of the phase line is indicated, and the lower-level tripping of the intelligent tapping wiring terminal row is caused;

when the detected voltage of the power interface is normal, and the detected current of the output wiring hole of a certain phase line suddenly disappears to be zero, the larger fault current of the output wiring hole of the phase line is not detected, and the user arrearage tripping or the user actively cuts off the load on the power utilization side is indicated.

6. The smart tap wire terminal strip of claim 1 wherein said power source comprises a super capacitor and a secondary power circuit connected.

7. The intelligent tapping line terminal row according to any one of claims 1-6, wherein an equipment nameplate label and a two-dimensional code are further attached to the base shell or the top cover shell for realizing visualization and convenient acquisition of the nameplate and identity information of the intelligent tapping line terminal row; electronic information of the equipment nameplate label and the two-dimensional code is stored in the electrified erasable programmable read-only memory in the primary part.

Technical Field

The invention belongs to the technical field of low-voltage distribution equipment, and particularly relates to an intelligent tapping line terminal row.

Background

At present, the collection of power consumption information is generally carried out by an electric meter in a metering box in the range of a low-voltage distribution station, and a wiring terminal block in a traditional metering box only plays a role in distributing electric energy. However, the electric meter takes the collected electric quantity information as a main task, and lacks the collection of data such as terminal voltage, current curve, electric energy quality, voltage and current waveform, and has poor instantaneity and flexibility, so that the electric meter is difficult to adapt to the requirements of operation and maintenance on data quality and data instantaneity. In addition, the current user ammeter can only rely on power line carrier to detect which transformer the user ammeter is located under, and the topological information that has can not satisfy the actual need far, if lack the membership of each ammeter and corresponding batch meter and terminal row bus, lead to once taking place the user power failure trouble, be difficult to judge the fault area fast.

In order to overcome the problems, the existing scheme increases the application of the non-metering function facing operation and maintenance by upgrading the functions of the existing electric meters, but the problems that the existing electric meters need to be replaced in large quantity, voltage collection of each electric meter is repeated, communication and computing resources are repeated, effective utilization is difficult, transformation is difficult, investment difficulty is high, and updating flexibility is poor exist.

In addition, the bus of the low-voltage distribution box in the range of the low-voltage distribution area only plays a role in distributing electric energy, and does not have intelligent functions such as voltage current collection, communication and the like. At present, related equipment collects the bus voltage and the outgoing current of a distribution box through low-voltage monitoring terminal secondary equipment for collecting voltage and current in a low-voltage distribution box, but the problems of the secondary equipment, such as complex secondary voltage and current measurement circuit, are not concise in installation, operation and maintenance, maintenance and the like, and are not attractive, the reliability is reduced, the measurement precision is reduced and the like.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides an intelligent tapping line terminal row. This intelligence tapping line terminal row collects multiple functions in an organic whole such as current distribution, voltage and current monitoring and communication, and adaptable operation and maintenance overhauls the requirement to data collection quality and real-time, and has advantages such as simple to operate, the later maintenance of being convenient for.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention provides an intelligent tapping line terminal row which is characterized by comprising a primary part and a secondary part which are detachably connected;

the primary part comprises a base shell, a phase line input wiring terminal and a plurality of phase line output wiring terminals which are fixed in the base shell and connected through a phase line metal row, a zero line input wiring terminal and a plurality of zero line output wiring terminals which are connected through a zero line metal row, a plurality of current sensors, a charged erasable programmable read-only memory, a primary part power interface, a primary part current acquisition interface and a primary part read-only memory interface; the phase line input wiring terminal and the zero line input wiring terminal are respectively connected to the power supply side through corresponding input wiring holes on the surface of the base shell, and are also respectively connected with the primary part power supply interface through corresponding metal bars; each phase line output terminal or the zero line output terminal corresponding to each phase line output terminal is respectively sleeved with a corresponding current sensor through an output wiring hole positioned on the surface of the base shell, and each phase line output terminal and each zero line output terminal are respectively connected with a corresponding phase line and a corresponding zero line on the power utilization side; each current sensor is connected with the primary partial current acquisition interface and is used for converting acquired current signals of each power utilization side into weak current signals; the electrified erasable programmable read-only memory is connected with a primary part read-only memory interface and is used for storing the topological information of the intelligent tapping line terminal row;

the secondary part comprises a top cover shell, and a power supply, a voltage sensor, an AD acquisition circuit, a microcontroller, an Internet of things communication module, a synchronous time setting/positioning module, a random access memory, a real-time clock, an LED display lamp, a secondary part power supply interface, a secondary part current acquisition interface and a secondary part read-only memory interface which are fixed in the top cover shell, wherein a voltage signal, a current signal and the topological information of an intelligent tapping line terminal row per se are transmitted between the primary part and the secondary part through the power supply interface, the current acquisition interface and the read-only memory interface which are arranged in the primary part and the secondary part respectively; the power supply is connected with the phase line metal bar and the zero line metal bar through a secondary power supply interface and a primary power supply interface in sequence and is used for obtaining power supply and supplying power to all devices in the secondary part when a power supply side fails; the AD acquisition circuit comprises an AD acquisition chip and two sampling resistors, wherein the AD acquisition chip is connected with the secondary part current acquisition interface through a first sampling resistor and is connected with the secondary part power supply interface through a second sampling resistor and the voltage sensor, and the AD acquisition chip and the secondary part power supply interface are respectively used for converting the acquired weak current signals at each power utilization side and the acquired voltage analog signals at the power supply side into corresponding voltage digital signals and transmitting the corresponding voltage digital signals to the microcontroller; the real-time clock is connected with the microcontroller and is used for providing current time information; the synchronous time setting/positioning module is connected with the microcontroller and is used for correcting the time information of the real-time clock and providing the geographical position information of the intelligent tapping line terminal row; the microcontroller is used for controlling the acquisition frequency of the AD acquisition chip, processing voltage digital signals transmitted by the AD acquisition chip, extracting each phase of fundamental wave voltage/current effective value and each phase of harmonic wave voltage/current effective value by combining current time and geographical position information, calculating full-wave voltage/current effective value, positive sequence voltage/current effective value, negative sequence voltage/current effective value, zero sequence voltage/current effective value, active power, reactive power and power consumption side electric quantity frozen value information, and analyzing the reason of the power supply fault if the power supply fault occurs; the microcontroller is connected with the secondary part memory interface and used for reading the self topological information of the intelligent tapping line terminal row stored in the electrified erasable programmable read-only memory, the microcontroller realizes the communication with the outside through the Internet of things communication module and expands the capacity of the memory through the random access memory; and the LED display lamp is connected with the microcontroller and is used for displaying the working state of the intelligent tapping line terminal row.

Furthermore, the phase line metal row connected with the phase line input terminal is single-phase, two-phase or three-phase.

Furthermore, an equipment nameplate label and a two-dimensional code are further attached to the base shell or the top cover shell and used for realizing visualization and convenient acquisition of the nameplate of the intelligent tapping line terminal and identity information; electronic information of the equipment nameplate label and the two-dimensional code is stored in the electrified erasable programmable read-only memory in the primary part.

The invention has the characteristics and beneficial effects that:

according to the intelligent distribution box, the tapping line terminals in the metering box or the bus bar in the distribution box are transformed, so that the terminal bar is intelligent, the topological information of the tapping line terminal bar can be rapidly acquired, and the power failure fault can be analyzed and uploaded. Can replace original binding post or generating line row fast under the prerequisite that does not influence normal work such as ammeter, the part that will need regularly change and need not regularly change adopts split type design, the later maintenance of being convenient for. Through the intelligent tapping line terminal row, the electric meter positioned in the range of a low-voltage distribution station area can overcome a series of complex challenges of operation and inspection, user service, new energy access and the like.

Drawings

Fig. 1 is a schematic diagram of an overall structure of an intelligent tap line terminal strip according to an embodiment of the present invention.

Fig. 2(a) and (b) are schematic connection diagrams of a power supply interface and a current collection interface in the primary part and the secondary part, respectively, in the embodiment of the invention.

Detailed Description

The technical scheme of the invention is described in detail below by combining the accompanying drawings and embodiments:

referring to fig. 1, the intelligent tapping line terminal strip provided by the embodiment of the invention is used for a metering box and comprises a primary part and a secondary part which are designed in a split mode, and the primary part and the secondary part are detachably connected through bolts. Wherein the content of the first and second substances,

the primary part comprises a base shell, a phase line input wiring terminal and a plurality of (2 shown in the figure) phase line output wiring terminals which are fixed in the base shell and connected through a phase line metal row, a zero line input wiring terminal and a plurality of zero line output wiring terminals (2 shown in the figure) which are connected through a zero line metal row, a plurality of current sensors, a charged erasable programmable read-only memory (EEPROM), a primary power interface, a primary current acquisition interface and a primary part EEPROM interface, wherein each phase line output wiring terminal corresponds to one zero line output wiring terminal; the phase line input wiring terminal and the zero line input wiring terminal are respectively connected to a power supply side (such as 220V/380V commercial power) through a phase line input wiring hole and a zero line input wiring hole which are positioned on the surface of the base shell; each phase line output terminal or zero line output terminal corresponding to each phase line output terminal is respectively sleeved with a corresponding current sensor through an output wiring hole positioned on the surface of the base shell, and each phase line output terminal and each zero line output terminal are respectively connected with a phase line and a zero line of each power utilization side (such as a user electric meter), namely the number of the phase line output terminals, the zero line output terminals and the current sensors arranged in the intelligent tapping terminal row is equal; each current sensor is connected with the primary current acquisition interface and is used for converting acquired current signals of each power utilization side into weak current signals; the EEPROM is connected with the primary EEPROM interface and used for storing the self topology information of the intelligent tapping line terminal row;

the secondary part comprises a top cover shell, a power supply fixed in the top cover shell, a voltage sensor, an AD acquisition circuit, a Microcontroller (MCU), an Internet of things communication module, a synchronous time setting/positioning module, an RAM (random access memory), an RTC (real-time clock), an LED display lamp, a secondary power supply interface, a secondary current acquisition interface and a secondary part EEPROM interface, wherein the primary part and the secondary part transmit voltage signals, current signals and the topological information of an intelligent tapping line terminal row per se through the power supply interface, the current acquisition interface and the EEPROM interface in the primary part and the secondary part respectively. The power supply is connected with the phase line metal bar and the zero line metal bar through the secondary power supply interface and the primary power supply interface in sequence and used for obtaining power supply and supplying power to all devices in the secondary part when the power supply side fails; the AD acquisition circuit comprises an AD acquisition chip and two sampling resistors, wherein the AD acquisition chip is connected with the secondary current acquisition interface through a first sampling resistor and is connected with the secondary power supply interface through a second sampling resistor and a voltage sensor, and the AD acquisition chip and the secondary power supply interface are respectively used for converting the acquired weak current signals of the power utilization side and the acquired voltage analog signals of the power supply side into corresponding voltage digital signals and transmitting the voltage digital signals to the MCU; the RTC is connected with the MCU and used for providing current time information; the synchronous time setting/positioning module is connected with the MCU and used for correcting the time information of the RTC and providing the geographical position information of the intelligent tapping line terminal row; the MCU is used for controlling the acquisition frequency of the AD acquisition chip, processing voltage digital signals transmitted by the AD acquisition chip and extracting voltage/current effective values and harmonic voltage/current effective values of each phase by combining current time and geographical position information, so that the full-wave voltage/current effective values, positive sequence voltage/current effective values, negative sequence voltage/current effective values, zero sequence voltage/current effective values, active power, reactive power and power consumption side electric quantity frozen value information are calculated, if a power supply fault occurs, the MCU analyzes the reason, the MCU is connected with a secondary part EEPROM interface and used for reading topology information of the intelligent tapping wire terminal row stored in the EEPROM, the MCU realizes communication with the outside through an internet of things communication module and performs internal memory capacity expansion through the RAM; the LED display lamp is connected with the MCU and used for displaying the working state of the intelligent tapping line terminal row.

The specific implementation modes and functions of all the components of the embodiment of the invention are respectively as follows:

the intelligence tapping terminal row of this embodiment is installed in the batch meter, the installation and the rigidity of each part in its of the base casing and the top cap casing in primary and secondary portion, mainly used holds the electrical part that need not to change in the base casing, the top cap casing mainly used holds the electron device that has the periodic replacement demand, the connection can be dismantled through the bolt in bight between the base casing of this embodiment and the top cap casing, both all adopt insulating material to make and constitute a rectangle casing jointly, satisfy the requirement of support intensity.

The primary part power supply interface and the secondary part power supply interface, the primary part current acquisition interface and the secondary part current acquisition interface, and the primary part read-only memory interface and the secondary part read-only memory interface are respectively connected through corresponding connectors; the power supply interface is connected and used for realizing power supply of the secondary part and acquisition of voltage of the primary part on the power supply side by the secondary part; the current acquisition interfaces are connected and used for realizing the acquisition of the outgoing current of the primary part by the secondary part; the EEPROM interfaces are connected and used for realizing the transmission of the self topological information of the intelligent tapping line terminal row. In this embodiment, referring to (a) and (b) in fig. 2, the connection relationship between the power interfaces and the current collection interface respectively includes a phase line port (a phase line port connected with A, B, C three phases as shown in (a) in fig. 2) and a null line port (a null line port connected with N lines as shown in (a) in fig. 2), where the number of the phase line ports is the same as the number of the phase lines on the power supply side accessed through the phase line metal row; each current acquisition interface respectively comprises a plurality of outgoing line current signal ports, the number of the outgoing line current ports is the same as that of the current sensors arranged in the intelligent tapping line terminal row, and each current sensor is respectively connected into one corresponding outgoing line current port.

In the primary part:

the phase line metal bar and the zero line metal bar are mainly used for realizing the distribution of primary current, and a conventional metal bar is adopted, wherein the phase line metal bar connected with the phase line input terminal can be selected from a single phase, a two phase or a three phase, and the embodiment is a single phase.

Each current sensor is mainly used for converting a primary large current signal distributed to a corresponding user ammeter into a weak current signal capable of realizing AD acquisition and transmitting the weak current signal to the secondary part through a current acquisition interface; the current sensors of this embodiment have the same structure, and the current sensor model 5311 manufactured by API Technologies components is used.

The system comprises an EEPROM (electrically erasable programmable read-only memory) and a primary part EEPROM (electrically erasable programmable read-only memory) interface, wherein the EEPROM is connected with the primary part EEPROM interface and is used for storing the self topological information of the intelligent tapping line terminal row, the information is stored when the intelligent tapping line terminal row leaves a factory and mainly comprises a phase line input terminal serial number, a phase line metal row serial number, a zero line input terminal serial number, a zero line metal row serial number, a phase line output terminal serial number, a zero line output terminal serial number, a current sensor serial number, a port serial number of a current acquisition interface and a port serial number of a power interface, the phase line input terminal serial number corresponds to the phase line metal row serial; the topological information further comprises a connection mapping relation between a phase line metal bar number and a phase line output terminal number, a connection mapping relation between the phase line output terminal number and a zero line output terminal number, a connection mapping relation between the phase line output terminal number and a current sensor number, a connection mapping relation between the zero line output terminal number and a current sensor number, a connection mapping relation between the current sensor and a port number of a current acquisition interface, and a connection mapping relation between the phase line metal bar and a port number of a power interface. The EEPROM of this embodiment employs a BR93G46-3A chip from ROHM Semiconductor.

In the secondary part:

the power supply comprises a super capacitor and a secondary power supply circuit which are connected, and the secondary power supply circuit is connected with the power supply side through a secondary power supply interface, a primary power supply interface, a corresponding metal bar and an input wiring terminal. When the power supply side works normally, power is supplied to all electric devices in the secondary part by the power supply side (commercial power) and power interfaces in the primary part and the secondary part, and the power supply is in a charging state; when power-off time of the power supply side occurs, the super capacitor discharges through the secondary power circuit to provide power for the whole secondary part, the MCU judges the power-off event to be true according to the voltage and current value condition at the moment, and the power-off event is uploaded through the Internet of things communication module. In this embodiment, the super capacitor is a 40F 3V capacitor; the secondary circuit power supply adopts a switching power supply module which is converted from 220V into +/-12V, 5V and 3.3V.

The voltage sensor is used for converting a primary strong voltage signal transmitted through the primary power interface and the secondary power interface into a weak voltage signal capable of being acquired in an AD mode, and the voltage sensor of the embodiment adopts a miniature voltage transformer with the model of ZMPT 107.

The AD acquisition circuit comprises an AD acquisition chip and two sampling resistors connected with the input side of the chip, and weak current signals of each user transmitted by the secondary current acquisition interface are converted into voltage analog signals which can be acquired by the AD acquisition chip through the first sampling resistors; the weak current voltage signal transmitted by the voltage sensor is subjected to impedance matching through the first sampling resistor and converted into a voltage analog signal which can be collected by the AD sampling chip; and the AD sampling chip converts the voltage analog signals of all the channels into voltage digital signals respectively and then transmits the voltage digital signals to the MCU for corresponding processing. In this embodiment, the AD sampling chip employs a 12-bit high-speed low-power converter ADs 7822.

The RTC is used for providing current time information and selects a real-time clock chip of M41T 82.

The synchronous time setting/positioning module is used for calibrating current time information provided by the RTC and providing geographical position information of the intelligent tapping line terminal row. The present embodiment employs a GPS module of type NEO-6M.

The RAM IS used for expanding the memory of the MCU, and the embodiment adopts a static random access memory with the model number of IS62WVS2568FBLL-20 NLI.

The LED display lamp mainly realizes the display of important working states of the intelligent tapping line terminal row, including communication states, power supply states, equipment states and the like; if the LED display lamp is turned on in yellow, the communication is normal, and if the yellow is turned off, the communication is interrupted; when the LED display lamp flashes in a red light mode, the normal work of the equipment is indicated, and when the red light is normally on, the fault of the equipment is indicated; when the LED display lamp is turned on by a green lamp, the power supply is in a discharging state, and when the green lamp is turned off, the power supply is in a charging state.

The communication part of the internet of things mainly realizes the communication between the MCU and an external control end in the intelligent tapping line terminal row, uploads the related information obtained by the MCU processing, and is convenient for subsequent management.

MCU is mainly used for realizing peripheral management and corresponding data processing to this intelligence tapping line terminal row, simultaneously with above-mentioned AD acquisition chip, synchronous time setting/orientation module, thing networking communication module, RAM, secondary part EEPROM interface, RTC, LED display lamp connection. In addition, the MCU also reads the self topology information of the intelligent tapping line terminal row stored in the EEPROM through the two EEPROM interfaces, and the topology connection relation between each bus and the corresponding outgoing line can be obtained by reading the topology information carried by the EEPROM when leaving a factory without additional identification. The data processing performed by the MCU mainly comprises: the method comprises the steps of performing fast Fourier transform on voltage digital signals transmitted by an AD sampling chip, extracting each phase of fundamental wave voltage effective value, fundamental wave current effective value, 50-order internal harmonic voltage effective value and 50-order internal harmonic current effective value, and calculating results such as full-wave voltage effective value, full-wave current effective value, positive sequence voltage effective value, negative sequence voltage effective value, zero-sequence voltage effective value, positive sequence current effective value, negative sequence current effective value, zero-sequence current effective value, active power, reactive power, power factor, electric quantity freezing value and the like (the specific calculation method can be realized by conventional technical means in the field). When the power failure fault occurs, the MCU analyzes the fault and uploads the fault by using the Internet of things communication module, and the MCU analyzes the reason of the power supply fault and comprises the following conditions:

in the first situation, when the voltage loss of each phase of a power interface is detected, the suddenly increased fault current of the current of an output wiring hole of a certain phase line is detected, and the current of the output wiring hole of the phase line is zero after the fault current occurs, it is indicated that a short-circuit fault occurs inside a user at a power utilization side connected with the output wiring hole of the phase line, and the upper-level tripping of an intelligent tapping wiring terminal row is caused;

in the second situation, when the voltage loss of each phase of the power interface is detected and the suddenly increased fault current of the phase line output wiring hole is not detected, the power failure fault of the current power supply side is indicated;

in a third situation, when the voltage of the power interface is detected to be normal, and the current of an output wiring hole of a certain phase line is detected to have suddenly increased fault current, and the current of the output interface of the phase line is zero after the fault current occurs, it is indicated that a short-circuit fault occurs inside a user at a power utilization side connected with the output wiring hole of the phase line, and the lower-level tripping of the intelligent tapping wiring terminal row is caused;

and fourthly, when the detected voltage of the power interface is normal and the detected current of the output wiring hole of a certain phase line suddenly disappears to be zero, the larger fault current of the output wiring hole of the phase line is not detected, and the user arrearage tripping or the user actively cuts off the load on the power utilization side is indicated.

The MCU of the embodiment adopts a microcontroller singlechip of STM32F103VET6, and corresponding functions of the MCU are realized on the singlechip by using a conventional programming technology in the field.

Furthermore, an equipment nameplate label and a two-dimensional code are attached to the base shell or the top cover shell and used for realizing visualization and convenient acquisition of the intelligent tapping line terminal nameplate and identity information; the EEPROM in the primary part stores electronic information of an equipment nameplate label and a two-dimensional code.

The intelligent tapping terminal row provided by the invention is described in detail above, a specific example is applied in the text to explain the principle and the implementation mode of the invention, and the description of the above example is only used to help understand the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there are changes in the specific embodiments and the application scope, and these changes should be covered by the protection scope of the appended claims. In view of the above, the present disclosure should not be construed as limiting the invention.