CN216670111U

CN216670111U - Multi-loop AC/DC integrated wide area measurement terminal

Info

Publication number: CN216670111U
Application number: CN202122299055.5U
Authority: CN
Inventors: 袁凤; 何应华; 周绪谱; 胡宝祥
Original assignee: Zhejiang Jinghe Electronic Technology Co ltd
Current assignee: Zhejiang Jinghe Electronic Technology Co ltd
Priority date: 2021-09-22
Filing date: 2021-09-22
Publication date: 2022-06-03
Anticipated expiration: 2031-09-22

Abstract

The utility model discloses a multi-loop alternating current-direct current integrated wide area measurement terminal which is used for monitoring an alternating current loop and a direct current loop simultaneously and comprises an alternating current monitoring module, a direct current monitoring module, a control module and a power module, wherein the power module is electrically connected with the alternating current monitoring module, the direct current monitoring module and the control module respectively; the control module is respectively and electrically connected with the alternating current monitoring module and the direct current monitoring module. The utility model discloses a multi-loop alternating current-direct current integrated wide area measurement terminal which adopts four-loop alternating current and four-loop direct current for sampling, metering and monitoring, solves the problem of synchronous data acquisition and solves the process problem caused by narrow space.

Description

Multi-loop AC/DC integrated wide area measurement terminal

Technical Field

The utility model belongs to the technical field of power supply alternating current-direct current conversion monitoring, and particularly relates to a multi-loop alternating current-direct current integrated wide area measurement terminal.

Background

The national double-carbon development strategy of carbon peak reaching and carbon neutralization is comprehensively promoted, the national double-carbon development strategy is fully supported by a national power grid company, a 'carbon peak reaching and carbon neutralization action scheme' is released, an implementation direction is respectively given from an energy supply side and a consumption side, the energy supply side mainly has the directions of new energy consumption, diversified energy storage, electric power demand side management, source grid charge storage interaction and the like, the energy consumption side greatly promotes the application of electric energy substitution (electricity for cooling and heating, clean heating and 'coal for power generation'), rural electrification and new energy automobiles, novel load large-scale friendly access is supported, a virtual power plant and new energy active support are developed, the application direction of a power grid energy-saving technology and the like, the deep application of energy storage, photovoltaic and base station 5G technologies mainly based on new energy does not leave energy utilization equipment for alternating current and direct current, and the typical problems are as follows:

1. at present, online monitoring and real-time verification of the alternating current-direct current conversion efficiency of an inverter power supply are temporarily omitted in the market, some inverters have a power regulation function related to the electric energy quality in the working process, all data output and measurement are calculated on inverter equipment, and as the operation duration of the equipment is long, faults of a direct current filter circuit, an IGBT (insulated gate bipolar transistor) and an alternating current filter occur in a plurality of equipment;

2. at present, no device for monitoring the alternating current and direct current mixed metering of the iron tower base station exists in the market, the power supply of the base station is mainly divided into three stages, generally, the power supply of the base station is 220V commercial power, and the first stage is to convert 220V into-48V; the second stage typically uses a modular power supply to convert the-48V voltage to 48V, or 28V, for powering the PA; the third level is a board level power supply, the voltage required by each chip, an analog circuit, a digital circuit and the like is converted from 12V, metering devices owned in the current market are independent alternating current devices and direct current instruments, and the existing equipment is only used for sampling monitoring, so that the purpose of auxiliary electricity charge statistics cannot be achieved in precision and real-time;

3. for example, the space of the base station scene of the iron tower company, the photovoltaic inverter and other scenes is limited, and the environments are different, for example, the problems that the installation of the AC instrument and the DC instrument is dispersed, the space position is occupied greatly, the data of the AC instrument and the DC instrument are not synchronous in real time, and the operation fault is caused by the protection problem exist.

Therefore, the above problems are further improved.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a multi-loop alternating current and direct current integrated wide area measurement terminal, which adopts four-loop alternating current and four-loop direct current for sampling, metering and monitoring, solves the problem of synchronous data acquisition and solves the process problem caused by narrow space.

The utility model also aims to provide a multi-loop alternating current and direct current integrated wide area measurement terminal, which can realize the sampling and measurement of an open-close type mutual inductor for alternating current and direct current inversion nodes of a power supply in the scenes of an iron tower base station, a photovoltaic inverter, energy storage and the like, has the real-time online monitoring function, can realize the measurement of alternating current and direct current electric quantity to assist the electric charge management, and realizes the conversion efficiency calculation of a third party through data monitoring.

In order to achieve the above object, the present invention provides a multi-loop ac/dc integrated wide area measurement terminal for monitoring an ac loop and a dc loop simultaneously, comprising an ac monitoring module, a dc monitoring module, a control module and a power module, wherein:

the power supply module is electrically connected with the alternating current monitoring module, the direct current monitoring module and the control module respectively;

the control module is electrically connected with the alternating current monitoring module and the direct current monitoring module respectively;

the alternating current monitoring module comprises a metering chip IC1, a metering chip IC2, a metering chip IC3 and a metering chip IC4 (which are respectively used for monitoring alternating current data of 4 channels), and the metering chip IC1, the metering chip IC2, the metering chip IC3 and the metering chip IC4 are respectively electrically connected with a control chip IC6 of the control module;

the direct current monitoring module comprises a metering chip UCH1, a metering chip UCH2, a metering chip UCH3 and a metering chip UCH4 (which respectively monitor direct current data of 4 channels), and the metering chip UCH1, the metering chip UCH2, the metering chip UCH3 and the metering chip UCH4 are respectively electrically connected with a control chip IC6 of the control module.

As a further preferable technical solution of the above technical solution, a capacitor T1C1 and a capacitor T1C2 are connected between pin 1 and pin 2 of the metering chip IC1, and one end of the capacitor T1C1, which is far away from the capacitor T1C2, is electrically connected to one end of the capacitor T1C2, which is far away from the capacitor T1C1, through a resistor T1R3, a resistor T1R1, a resistor T1R2 and a resistor T1R4 in sequence (two ends of the resistor T1R1 and the resistor T1R2 are connected to a current transformer for collecting an alternating current a);

a capacitor T1C3 and a capacitor T1C4 are connected between the 4 pin and the 5 pin of the metering chip IC1, one end of the capacitor T1C3, which is far away from the capacitor T1C4, is electrically connected with one end of the capacitor T1C4, which is far away from the capacitor T1C3, through a resistor T1R7, a resistor T1R5, a resistor T1R6 and a resistor T1R8 in sequence (two ends of the resistor T1R5 and the resistor T1R6 are connected with a current transformer for collecting B current alternating current);

a capacitor T1C5 and a capacitor T1C6 are connected between the 7 pin and the 8 pin of the metering chip IC1, one end, far away from the capacitor T1C6, of the capacitor T1C5 is electrically connected with one end, far away from the capacitor T1C5, of the capacitor T1C6 sequentially through a resistor T1R11, a resistor T1R9, a resistor T1R10 and a resistor T1R12 (two ends of the resistor T1R9 and the resistor T1R10 are connected with a current transformer for collecting C current alternating current);

the 11 pins of the metering chip IC1 are electrically connected with the 2 pins of the ac connection unit IPU2 (for detecting the voltage of the a phase) through a resistor T1R19, the 14 pins of the metering chip IC1 are electrically connected with the 4 pins of the ac connection unit IPU2 (for detecting the voltage of the B phase) through a resistor T1R20, and the 17 pins of the metering chip IC1 are electrically connected with the 6 pins of the ac connection unit IPU2 (for detecting the voltage of the C phase) through a resistor T1R 21.

It is worth mentioning that parameters such as power and the like can be calculated by collecting the voltage and the current of each phase of alternating current.

As a further preferable technical solution of the above technical solution, a capacitor T2C1 and a capacitor T2C2 are connected between pin 1 and pin 2 of the metering chip IC2, and one end of the capacitor T2C1, which is far away from the capacitor T2C2, is electrically connected to one end of the capacitor T2C2, which is far away from the capacitor T2C1, through a resistor T2R3, a resistor T2R1, a resistor T2R2 and a resistor T2R4 in sequence (two ends of the resistor T2R1 and the resistor T2R2 are connected to a current transformer for collecting an alternating current a);

a capacitor T2C3 and a capacitor T2C4 are connected between the 4 pin and the 5 pin of the metering chip IC2, one end of the capacitor T2C3, which is far away from the capacitor T2C4, is electrically connected with one end of the capacitor T2C4, which is far away from the capacitor T2C3, through a resistor T2R7, a resistor T2R5, a resistor T2R6 and a resistor T2R8 in sequence (two ends of the resistor T2R5 and the resistor T2R6 are connected with a current transformer for collecting B current alternating current);

a capacitor T2C5 and a capacitor T2C6 are connected between a pin 7 and a pin 8 of the metering chip IC2, one end, far away from the capacitor T2C6, of the capacitor T2C5 is electrically connected with one end, far away from the capacitor T2C5, of the capacitor T2C6 through a resistor T2R11, a resistor T2R9, a resistor T2R10 and a resistor T2R12 in sequence (two ends of the resistor T2R9 and two ends of the resistor T2R10 are connected with a current transformer and used for collecting C current alternating current);

the 11 pins of the metering chip IC2 are electrically connected with the 2 pins of the ac connection unit IPU2 (for detecting the voltage of the a phase) through a resistor T2R19, the 14 pins of the metering chip IC2 are electrically connected with the 4 pins of the ac connection unit IPU2 (for detecting the voltage of the B phase) through a resistor T2R20, and the 17 pins of the metering chip IC2 are electrically connected with the 6 pins of the ac connection unit IPU2 (for detecting the voltage of the C phase) through a resistor T2R 21.

As a further preferable technical solution of the above technical solution, a capacitor T3C1 and a capacitor T3C2 are connected between pin 1 and pin 2 of the metering chip IC3, one end of the capacitor T3C1, which is far away from the capacitor T3C2, is electrically connected to one end of the capacitor T3C2, which is far away from the capacitor T3C1, through a resistor T3R3, a resistor T3R1, a resistor T3R2 and a resistor T3R4 in sequence (two ends of the resistor T3R1 and the resistor T3R2 are connected to a current transformer for collecting an alternating current a);

a capacitor T3C3 and a capacitor T3C4 are connected between the 4 pin and the 5 pin of the metering chip IC3, one end of the capacitor T3C3, which is far away from the capacitor T3C4, is electrically connected with one end of the capacitor T3C4, which is far away from the capacitor T3C3, through a resistor T3R7, a resistor T3R5, a resistor T3R6 and a resistor T3R8 in sequence (two ends of the resistor T3R5 and the resistor T3R6 are connected with a current transformer for collecting B current alternating current);

a capacitor T3C5 and a capacitor T3C6 are connected between the 7 pin and the 8 pin of the metering chip IC3, one end, far away from the capacitor T3C6, of the capacitor T3C5 is electrically connected with one end, far away from the capacitor T3C5, of the capacitor T3C6 sequentially through a resistor T3R11, a resistor T3R9, a resistor T3R10 and a resistor T3R12 (two ends of the resistor T3R9 and the resistor T3R10 are connected with a current transformer for collecting C current alternating current);

the 11 pins of the metering chip IC3 are electrically connected with the 2 pins of the ac connection unit IPU2 (for detecting the voltage of the a phase) through a resistor T3R19, the 14 pins of the metering chip IC3 are electrically connected with the 4 pins of the ac connection unit IPU2 (for detecting the voltage of the B phase) through a resistor T3R20, and the 17 pins of the metering chip IC3 are electrically connected with the 6 pins of the ac connection unit IPU2 (for detecting the voltage of the C phase) through a resistor T3R 21.

As a further preferable technical solution of the above technical solution, a capacitor T4C1 and a capacitor T4C2 are connected between pin 1 and pin 2 of the metering chip IC4, and one end of the capacitor T4C1, which is far away from the capacitor T4C2, is electrically connected to one end of the capacitor T4C2, which is far away from the capacitor T4C1, through a resistor T4R3, a resistor T4R1, a resistor T4R2 and a resistor T4R4 in sequence (two ends of the resistor T4R1 and the resistor T4R2 are connected to a current transformer for collecting an alternating current a);

a capacitor T4C3 and a capacitor T4C4 are connected between the 4 pin and the 5 pin of the metering chip IC4, one end of the capacitor T4C3, which is far away from the capacitor T4C4, is electrically connected with one end of the capacitor T4C4, which is far away from the capacitor T4C3, through a resistor T4R7, a resistor T4R5, a resistor T4R6 and a resistor T4R8 in sequence (two ends of the resistor T4R5 and the resistor T4R6 are connected with a current transformer for collecting B current alternating current);

a capacitor T4C5 and a capacitor T4C6 are connected between the 7 pin and the 8 pin of the metering chip IC4, one end, far away from the capacitor T4C6, of the capacitor T4C5 is electrically connected with one end, far away from the capacitor T4C5, of the capacitor T4C6 sequentially through a resistor T4R11, a resistor T4R9, a resistor T4R10 and a resistor T4R12 (two ends of the resistor T4R9 and the resistor T4R10 are connected with a current transformer for collecting C current alternating current);

the 11 pins of the metering chip IC4 are electrically connected with the 2 pins of the ac connection unit IPU2 (for detecting the voltage of the a phase) through a resistor T4R19, the 14 pins of the metering chip IC4 are electrically connected with the 4 pins of the ac connection unit IPU2 (for detecting the voltage of the B phase) through a resistor T4R20, and the 17 pins of the metering chip IC4 are electrically connected with the 6 pins of the ac connection unit IPU2 (for detecting the voltage of the C phase) through a resistor T4R 21.

As a further preferable technical solution of the above technical solution, a capacitor C1CH1 and a capacitor C2CH1 are connected between 5 pins and 6 pins of the metering chip UCH1, one end of the capacitor C1CH1, which is far away from the capacitor C2CH1, is electrically connected to one end of the capacitor C2CH1, which is far away from the capacitor C1CH1, through a resistor R4CH1, a resistor R2CH1 and a resistor R5CH1 in sequence, and a common end of the resistor R2CH1 and the resistor R4CH1 is electrically connected to 2 pins of the dc connection unit JUDC1 through a resistor R3CH1 (monitoring dc power);

a capacitor C1CH2 and a capacitor C2CH2 are connected between the 5 pin and the 6 pin of the metering chip UCH2, one end of the capacitor C1CH2, which is far away from the capacitor C2CH2, is electrically connected with one end of the capacitor C2CH2, which is far away from the capacitor C1CH2, through a resistor R4CH2, a resistor R2CH2 and a resistor R5CH2 in sequence, and the common end of the resistor R2CH2 and the resistor R4CH2 is electrically connected with the 2 pin of the direct current connection unit JUDC2 through a resistor R3CH2 (for monitoring direct current);

a capacitor C1CH3 and a capacitor C2CH3 are connected between the 5 pin and the 6 pin of the metering chip UCH3, one end of the capacitor C1CH3, which is far away from the capacitor C2CH3, is electrically connected with one end of the capacitor C2CH3, which is far away from the capacitor C1CH3, through a resistor R4CH3, a resistor R2CH3 and a resistor R5CH3 in sequence, and the common end of the resistor R2CH3 and the resistor R4CH3 is electrically connected with the 2 pin of the direct current connection unit JUDC2 through a resistor R3CH3 (for monitoring direct current);

a capacitor C1CH4 and a capacitor C2CH4 are connected between the 5 pin and the 6 pin of the metering chip UCH4, one end of the capacitor C1CH4, which is far away from the capacitor C2CH4, is electrically connected with one end of the capacitor C2CH4, which is far away from the capacitor C1CH4, through a resistor R4CH4, a resistor R2CH4 and a resistor R5CH4 in sequence, and a common connection end of the resistor R2CH4 and the resistor R4CH4 is electrically connected with the 2 pin of the dc connection unit JUDC2 through a resistor R3CH4 (direct current monitoring).

As a further preferable technical solution of the above technical solution, pin 28 of the metering chip IC2 is electrically connected to pin 50 of a control chip IC6 of the control module, pin 27 of the metering chip IC2 is electrically connected to pin 46 of the control chip IC6, and pin 26 of the metering chip IC2 is electrically connected to pin 45 of the control chip IC 6;

the pin 28 of the metering chip IC3 is electrically connected with the pin 50 of the control chip IC6 of the alternating current control circuit, the pin 27 of the metering chip IC3 is electrically connected with the pin 46 of the control chip IC6, and the pin 26 of the metering chip IC3 is electrically connected with the pin 45 of the control chip IC 6;

the pin 28 of the metering chip IC4 is electrically connected with the pin 50 of the control chip IC6 of the alternating current control circuit, the pin 27 of the metering chip IC4 is electrically connected with the pin 46 of the control chip IC6, and the pin 26 of the metering chip IC4 is electrically connected with the pin 45 of the control chip IC 6;

the pin 28 of the metering chip IC1 is electrically connected with the pin 50 of the control chip IC6 of the alternating current control circuit, the pin 27 of the metering chip IC1 is electrically connected with the pin 46 of the control chip IC6, and the pin 26 of the metering chip IC1 is electrically connected with the pin 45 of the control chip IC 6.

As a further preferred technical solution of the above technical solution, the 2 pin of the metering chip UCH1 is electrically connected to the 42 pin of the control chip IC6, the 2 pin of the metering chip UCH2 is electrically connected to the 30 pin of the control chip IC6, the 2 pin of the metering chip UCH3 is electrically connected to the 36 pin of the control chip IC6, and the 2 pin of the metering chip UCH4 is electrically connected to the 32 pin of the control chip IC 6.

Drawings

Fig. 1 is a circuit diagram of a control module of the multi-loop ac/dc integrated wide area measurement terminal of the present invention.

Fig. 2 is a circuit diagram of an ac monitoring module of the multi-loop ac/dc integrated wide-area measurement terminal of the present invention.

Fig. 3 is a circuit diagram of an ac monitoring module of the multi-loop ac/dc integrated wide-area measurement terminal of the present invention.

Fig. 4 is a circuit diagram of a dc monitoring module of the multi-loop ac/dc integrated wide-area measurement terminal of the present invention.

Fig. 5 is a circuit diagram of a dc monitoring module of the multi-loop ac/dc integrated wide-area measurement terminal of the present invention.

Fig. 6 is a circuit diagram of a power module of the multi-loop ac/dc integrated wide area measurement terminal of the present invention.

Detailed Description

The following description is presented to disclose the utility model so as to enable any person skilled in the art to practice the utility model. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the utility model, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the utility model.

The utility model discloses a multi-loop alternating current-direct current integrated wide area measurement terminal, and the specific embodiment of the utility model is further described in combination with the preferred embodiment.

In the embodiment of the present invention, those skilled in the art note that the tower base station, the photovoltaic inverter, and the like related to the present invention can be regarded as the prior art.

Preferred embodiments.

The utility model discloses a multi-loop alternating current-direct current integrated wide area measurement terminal, which is used for monitoring an alternating current loop and a direct current loop simultaneously and comprises an alternating current monitoring module, a direct current monitoring module, a control module and a power supply module, wherein:

Specifically, a capacitor T1C1 and a capacitor T1C2 are connected between pin 1 and pin 2 of the metering chip IC1, one end of the capacitor T1C1, which is far away from the capacitor T1C2, is electrically connected to one end of the capacitor T1C2, which is far away from the capacitor T1C1, through a resistor T1R3, a resistor T1R1, a resistor T1R2 and a resistor T1R4 in sequence (two ends of the resistor T1R1 and the resistor T1R2 are connected to a current transformer for collecting an alternating current a);

More specifically, a capacitor T2C1 and a capacitor T2C2 are connected between pin 1 and pin 2 of the metering chip IC2, one end of the capacitor T2C1, which is far away from the capacitor T2C2, is electrically connected to one end of the capacitor T2C2, which is far away from the capacitor T2C1, through a resistor T2R3, a resistor T2R1, a resistor T2R2 and a resistor T2R4 in sequence (two ends of the resistor T2R1 and the resistor T2R2 are connected to a current transformer for collecting an alternating current a);

a capacitor T2C5 and a capacitor T2C6 are connected between the 7 pin and the 8 pin of the metering chip IC2, one end, far away from the capacitor T2C6, of the capacitor T2C5 is electrically connected with one end, far away from the capacitor T2C5, of the capacitor T2C6 through a resistor T2R11, a resistor T2R9, a resistor T2R10 and a resistor T2R12 in sequence (two ends of the resistor T2R9 and the resistor T2R10 are connected with a current transformer for collecting C current alternating current);

Further, a capacitor T3C1 and a capacitor T3C2 are connected between pin 1 and pin 2 of the metering chip IC3, one end of the capacitor T3C1, which is far away from the capacitor T3C2, is electrically connected to one end of the capacitor T3C2, which is far away from the capacitor T3C1, through a resistor T3R3, a resistor T3R1, a resistor T3R2 and a resistor T3R4 in sequence (two ends of the resistor T3R1 and the resistor T3R2 are connected to a current transformer for collecting an alternating current a);

Furthermore, a capacitor T4C1 and a capacitor T4C2 are connected between pin 1 and pin 2 of the metering chip IC4, and one end of the capacitor T4C1, which is far from the capacitor T4C2, is electrically connected to one end of the capacitor T4C2, which is far from the capacitor T4C1, through a resistor T4R3, a resistor T4R1, a resistor T4R2 and a resistor T4R4 in sequence (two ends of the resistor T4R1 and the resistor T4R2 are connected to a current transformer, which is used for collecting an alternating current a, and a line on the transformer is connected to a current interface of the device);

a capacitor T4C3 and a capacitor T4C4 are connected between the 4 pin and the 5 pin of the metering chip IC4, one end of the capacitor T4C3, which is far away from the capacitor T4C4, is electrically connected with one end of the capacitor T4C4, which is far away from the capacitor T4C3, through a resistor T4R7, a resistor T4R5, a resistor T4R6 and a resistor T4R8 in sequence (two ends of the resistor T4R5 and the resistor T4R6 are connected with a current transformer for collecting B current alternating current, and a wire on the transformer is connected to a current interface of the device);

a capacitor T4C5 and a capacitor T4C6 are connected between a pin 7 and a pin 8 of the metering chip IC4, one end of the capacitor T4C5, which is far away from the capacitor T4C6, is electrically connected with one end of the capacitor T4C6, which is far away from the capacitor T4C5, through a resistor T4R11, a resistor T4R9, a resistor T4R10 and a resistor T4R12 in sequence (two ends of the resistor T4R9 and the resistor T4R10 are connected with a current transformer for collecting C current alternating current, and a wire on the transformer is connected to a current interface of the device);

Preferably, a capacitor C1CH1 and a capacitor C2CH1 are connected between the 5 th pin and the 6 th pin of the metering chip UCH1, one end of the capacitor C1CH1, which is far away from the capacitor C2CH1, is electrically connected with one end of the capacitor C2CH1, which is far away from the capacitor C1CH1, through a resistor R4CH1, a resistor R2CH1 and a resistor R5CH1 in sequence, and a common end of the resistor R2CH1 and the resistor R4CH1 is electrically connected with the 2 th pin of the dc connection unit JUDC1 through a resistor R3CH1 (monitoring dc, connecting a line on a transformer to a current interface of a device);

a capacitor C1CH2 and a capacitor C2CH2 are connected between the 5 pin and the 6 pin of the metering chip UCH2, one end of the capacitor C1CH2, which is far away from the capacitor C2CH2, is electrically connected with one end of the capacitor C2CH2, which is far away from the capacitor C1CH2, through a resistor R4CH2, a resistor R2CH2 and a resistor R5CH2 in sequence, and the common end of the resistor R2CH2 and the resistor R4CH2 is electrically connected with the 2 pin of the direct current connection unit JUDC2 through a resistor R3CH2 (direct current is monitored, and a wire on a transformer is connected to a current interface of the device);

a capacitor C1CH3 and a capacitor C2CH3 are connected between the 5 pin and the 6 pin of the metering chip UCH3, one end of the capacitor C1CH3, which is far away from the capacitor C2CH3, is electrically connected with one end of the capacitor C2CH3, which is far away from the capacitor C1CH3, through a resistor R4CH3, a resistor R2CH3 and a resistor R5CH3 in sequence, and the common end of the resistor R2CH3 and the resistor R4CH3 is electrically connected with the 2 pin of the direct current connection unit JUDC2 through a resistor R3CH3 (direct current is monitored, and a wire on a transformer is connected to a current interface of the device);

a capacitor C1CH4 and a capacitor C2CH4 are connected between the 5 pin and the 6 pin of the metering chip UCH4, one end of the capacitor C1CH4, which is far away from the capacitor C2CH4, is electrically connected with one end of the capacitor C2CH4, which is far away from the capacitor C1CH4, through a resistor R4CH4, a resistor R2CH4 and a resistor R5CH4 in sequence, and a common connection end of the resistor R2CH4 and the resistor R4CH4 is electrically connected with the 2 pin of the dc connection unit JUDC2 through a resistor R3CH4 (direct current is monitored, and a line on the transformer is connected to a current interface of the device).

Preferably, pin 28 of the metering chip IC2 is electrically connected to pin 50 of the control chip IC6 of the control module, pin 27 of the metering chip IC2 is electrically connected to pin 46 of the control chip IC6, and pin 26 of the metering chip IC2 is electrically connected to pin 45 of the control chip IC 6;

Preferably, the 2 pin of the metering chip UCH1 is electrically connected to the 42 pin of the control chip IC6, the 2 pin of the metering chip UCH2 is electrically connected to the 30 pin of the control chip IC6, the 2 pin of the metering chip UCH3 is electrically connected to the 36 pin of the control chip IC6, and the 2 pin of the metering chip UCH4 is electrically connected to the 32 pin of the control chip IC 6.

Preferably, the power module comprises a power management chip U6 and a transformer TR1, and the power management chip U6 is electrically connected to the transformer TR 1.

Preferably, the present invention comprises:

electric energy metering function

(1) The electric energy metering function: the method has the advantages that active and reactive electric energy and reverse active and reactive total electric energy are measured in a time-sharing manner;

(2) the device has the function of recording the active and reactive historical electric quantity for the last 12 months;

(3) three-phase power supply, one or two-phase outage, measurement accuracy is not influenced. After power failure, all stored data are not lost and can be kept for more than 10 years;

(4) the coupling isolation active passive pulse test port has the output function (the output requirement of telecontrol pulse is met, and the pulse width is 80ms +/-20 ms);

(5) and measuring the residual current value, wherein a residual current transformer needs to be externally connected, and the ratio of the transformer is 5A/2.5 mA.

(this function needs to be customized).

Second, alarm function

(1) When the phase is lost, the corresponding alarm indicator lamp is turned off.

Third, communication function

(1) The communication can be carried out through a handheld terminal or a PC, programming setting and meter reading are completed, communication symbols are bright during communication, and the communication is convenient, visual and reliable.

(2) Communication protocol DL 645/2007.

Fourth, display function

(1) Displaying various information by adopting a wide-temperature large liquid crystal mode; the number of the electric energy display digit is 6 and 2 is decimal.

(2) The automatic parameter display function is realized, and the time for displaying is 5 seconds.

Preferably, the present invention also has the following advantages:

(1) and meanwhile, the independent metering and communication of the electric energy of the four loops are supported.

(2) The RJ12 connector mode is used for sampling the three-phase current, the secondary side milliampere level input is adopted, the safety is good, and the security and protection are convenient to maintain.

It should be noted that the technical features of the iron tower base station, the photovoltaic inverter, and the like related to the present patent application should be regarded as the prior art, and the specific structure, the operating principle, and the control manner and the spatial arrangement manner that may be related to the technical features should be selected conventionally in the field, and should not be regarded as the utility model point of the present patent, and the present patent is not further specifically described in detail.

It will be apparent to those skilled in the art that modifications and equivalents may be made in the embodiments and/or portions thereof without departing from the spirit and scope of the present invention.

Claims

1. The utility model provides a multiloop alternating current-direct current integration wide area measurement terminal for monitor alternating current circuit and direct current circuit simultaneously, its characterized in that, including alternating current monitoring module, direct current monitoring module, control module and power module, wherein:

the alternating current monitoring module comprises a metering chip IC1, a metering chip IC2, a metering chip IC3 and a metering chip IC4, wherein the metering chip IC1, the metering chip IC2, the metering chip IC3 and the metering chip IC4 are respectively and electrically connected with a control chip IC6 of the control module;

the direct current monitoring module comprises a metering chip UCH1, a metering chip UCH2, a metering chip UCH3 and a metering chip UCH4, wherein the metering chip UCH1, the metering chip UCH2, the metering chip UCH3 and the metering chip UCH4 are respectively and electrically connected with a control chip IC6 of the control module.

2. The multi-loop AC/DC integrated wide area measurement terminal of claim 1, wherein:

a capacitor T1C1 and a capacitor T1C2 are connected between the pin 1 and the pin 2 of the metering chip IC1, and one end of the capacitor T1C1, which is far away from the capacitor T1C2, is electrically connected with one end of the capacitor T1C2, which is far away from the capacitor T1C1, through a resistor T1R3, a resistor T1R1, a resistor T1R2 and a resistor T1R4 in sequence;

a capacitor T1C3 and a capacitor T1C4 are connected between the 4 pin and the 5 pin of the metering chip IC1, and one end, far away from the capacitor T1C4, of the capacitor T1C3 is electrically connected with one end, far away from the capacitor T1C3, of the capacitor T1C4 sequentially through a resistor T1R7, a resistor T1R5, a resistor T1R6 and a resistor T1R 8;

a capacitor T1C5 and a capacitor T1C6 are connected between the 7 pin and the 8 pin of the metering chip IC1, and one end, far away from the capacitor T1C6, of the capacitor T1C5 is electrically connected with one end, far away from the capacitor T1C5, of the capacitor T1C6 sequentially through a resistor T1R11, a resistor T1R9, a resistor T1R10 and a resistor T1R 12;

the 11 pin of the metering chip IC1 is electrically connected with the 2 pin of the AC connection unit IPU2 through a resistor T1R19, the 14 pin of the metering chip IC1 is electrically connected with the 4 pin of the AC connection unit IPU2 through a resistor T1R20, and the 17 pin of the metering chip IC1 is electrically connected with the 6 pin of the AC connection unit IPU2 through a resistor T1R 21.

3. The terminal of claim 2, wherein a capacitor T2C1 and a capacitor T2C2 are connected between pin 1 and pin 2 of the metering chip IC2, one end of the capacitor T2C1, which is far from the capacitor T2C2, is electrically connected to one end of the capacitor T2C2, which is far from the capacitor T2C1, through a resistor T2R3, a resistor T2R1, a resistor T2R2 and a resistor T2R4 in sequence;

a capacitor T2C3 and a capacitor T2C4 are connected between the 4 pin and the 5 pin of the metering chip IC2, and one end, far away from the capacitor T2C4, of the capacitor T2C3 is electrically connected with one end, far away from the capacitor T2C3, of the capacitor T2C4 sequentially through a resistor T2R7, a resistor T2R5, a resistor T2R6 and a resistor T2R 8;

a capacitor T2C5 and a capacitor T2C6 are connected between the 7 pin and the 8 pin of the metering chip IC2, and one end, far away from the capacitor T2C6, of the capacitor T2C5 is electrically connected with one end, far away from the capacitor T2C5, of the capacitor T2C6 sequentially through a resistor T2R11, a resistor T2R9, a resistor T2R10 and a resistor T2R 12;

the 11 pin of the metering chip IC2 is electrically connected with the 2 pin of the AC connection unit IPU2 through a resistor T2R19, the 14 pin of the metering chip IC2 is electrically connected with the 4 pin of the AC connection unit IPU2 through a resistor T2R20, and the 17 pin of the metering chip IC2 is electrically connected with the 6 pin of the AC connection unit IPU2 through a resistor T2R 21.

4. The terminal of claim 3, wherein a capacitor T3C1 and a capacitor T3C2 are connected between pin 1 and pin 2 of the metering chip IC3, one end of the capacitor T3C1, which is far from the capacitor T3C2, is electrically connected to one end of the capacitor T3C2, which is far from the capacitor T3C1, through a resistor T3R3, a resistor T3R1, a resistor T3R2 and a resistor T3R4 in sequence;

a capacitor T3C3 and a capacitor T3C4 are connected between the 4 pin and the 5 pin of the metering chip IC3, and one end, far away from the capacitor T3C4, of the capacitor T3C3 is electrically connected with one end, far away from the capacitor T3C3, of the capacitor T3C4 sequentially through a resistor T3R7, a resistor T3R5, a resistor T3R6 and a resistor T3R 8;

a capacitor T3C5 and a capacitor T3C6 are connected between the 7 pin and the 8 pin of the metering chip IC3, and one end, far away from the capacitor T3C6, of the capacitor T3C5 is electrically connected with one end, far away from the capacitor T3C5, of the capacitor T3C6 sequentially through a resistor T3R11, a resistor T3R9, a resistor T3R10 and a resistor T3R 12;

the 11 pins of the metering chip IC3 are electrically connected with the 2 pins of the AC connection unit IPU2 through a resistor T3R19, the 14 pins of the metering chip IC3 are electrically connected with the 4 pins of the AC connection unit IPU2 through a resistor T3R20, and the 17 pins of the metering chip IC3 are electrically connected with the 6 pins of the AC connection unit IPU2 through a resistor T3R 21.

5. The terminal of claim 4, wherein a capacitor T4C1 and a capacitor T4C2 are connected between pin 1 and pin 2 of the metering chip IC4, one end of the capacitor T4C1, which is far from the capacitor T4C2, is electrically connected to one end of the capacitor T4C2, which is far from the capacitor T4C1, through a resistor T4R3, a resistor T4R1, a resistor T4R2 and a resistor T4R4 in sequence;

a capacitor T4C3 and a capacitor T4C4 are connected between the 4 pin and the 5 pin of the metering chip IC4, and one end, far away from the capacitor T4C4, of the capacitor T4C3 is electrically connected with one end, far away from the capacitor T4C3, of the capacitor T4C4 sequentially through a resistor T4R7, a resistor T4R5, a resistor T4R6 and a resistor T4R 8;

a capacitor T4C5 and a capacitor T4C6 are connected between the 7 pin and the 8 pin of the metering chip IC4, and one end, far away from the capacitor T4C6, of the capacitor T4C5 is electrically connected with one end, far away from the capacitor T4C5, of the capacitor T4C6 sequentially through a resistor T4R11, a resistor T4R9, a resistor T4R10 and a resistor T4R 12;

the 11 pins of the metering chip IC4 are electrically connected with the 2 pins of the AC connection unit IPU2 through a resistor T4R19, the 14 pins of the metering chip IC4 are electrically connected with the 4 pins of the AC connection unit IPU2 through a resistor T4R20, and the 17 pins of the metering chip IC4 are electrically connected with the 6 pins of the AC connection unit IPU2 through a resistor T4R 21.

6. The terminal of claim 5, wherein the terminal comprises:

a capacitor C1CH1 and a capacitor C2CH1 are connected between the 5 pin and the 6 pin of the metering chip UCH1, one end of the capacitor C1CH1, which is far away from the capacitor C2CH1, is electrically connected with one end of the capacitor C2CH1, which is far away from the capacitor C1CH1, through a resistor R4CH1, a resistor R2CH1 and a resistor R5CH1 in sequence, and the common end of the resistor R2CH1 and the resistor R4CH1 is electrically connected with the 2 pin of the direct current connection unit JUDC1 through a resistor R3CH 1;

a capacitor C1CH2 and a capacitor C2CH2 are connected between the 5 pin and the 6 pin of the metering chip UCH2, one end of the capacitor C1CH2, which is far away from the capacitor C2CH2, is electrically connected with one end of the capacitor C2CH2, which is far away from the capacitor C1CH2, through a resistor R4CH2, a resistor R2CH2 and a resistor R5CH2 in sequence, and the common end of the resistor R2CH2 and the resistor R4CH2 is electrically connected with the 2 pin of the direct current connection unit JUDC2 through a resistor R3CH 2;

a capacitor C1CH3 and a capacitor C2CH3 are connected between the 5 pin and the 6 pin of the metering chip UCH3, one end, far away from the capacitor C2CH3, of the capacitor C1CH3 is electrically connected with one end, far away from the capacitor C1CH3, of the capacitor C2CH3 through a resistor R4CH3, a resistor R2CH3 and a resistor R5CH3 in sequence, and a common connection end of the resistor R2CH3 and the resistor R4CH3 is electrically connected with the 2 pin of the direct current connection unit JUDC2 through a resistor R3CH 3;

a capacitor C1CH4 and a capacitor C2CH4 are connected between the 5 pin and the 6 pin of the metering chip UCH4, one end of the capacitor C1CH4, which is far away from the capacitor C2CH4, is electrically connected with one end of the capacitor C2CH4, which is far away from the capacitor C1CH4, through a resistor R4CH4, a resistor R2CH4 and a resistor R5CH4 in sequence, and a common connection end of the resistor R2CH4 and the resistor R4CH4 is electrically connected with the 2 pin of the dc connection unit JUDC2 through a resistor R3CH 4.

7. The terminal of claim 6, wherein pin 28 of the meter chip IC2 is electrically connected to pin 50 of a control chip IC6 of the control module, pin 27 of the meter chip IC2 is electrically connected to pin 46 of the control chip IC6, and pin 26 of the meter chip IC2 is electrically connected to pin 45 of the control chip IC 6;

a pin 28 of the metering chip IC3 is electrically connected with a pin 50 of a control chip IC6 of the control module, a pin 27 of the metering chip IC3 is electrically connected with a pin 46 of the control chip IC6, and a pin 26 of the metering chip IC3 is electrically connected with a pin 45 of the control chip IC 6;

the pin 28 of the metering chip IC4 is electrically connected with the pin 50 of the control chip IC6 of the control module, the pin 27 of the metering chip IC4 is electrically connected with the pin 46 of the control chip IC6, and the pin 26 of the metering chip IC4 is electrically connected with the pin 45 of the control chip IC 6;

the pin 28 of the metering chip IC1 is electrically connected with the pin 50 of the control chip IC6 of the control module, the pin 27 of the metering chip IC1 is electrically connected with the pin 46 of the control chip IC6, and the pin 26 of the metering chip IC1 is electrically connected with the pin 45 of the control chip IC 6.

8. The terminal of claim 7, wherein 2 pins of said measurement chip UCH1 are electrically connected to 42 pins of said control chip IC6, 2 pins of said measurement chip UCH2 are electrically connected to 30 pins of said control chip IC6, 2 pins of said measurement chip UCH3 are electrically connected to 36 pins of said control chip IC6, and 2 pins of said measurement chip UCH4 are electrically connected to 32 pins of said control chip IC 6.