WO2018014750A1

WO2018014750A1 - Low-voltage power distribution system and multi-function instrument for the low-voltage power distribution system

Info

Publication number: WO2018014750A1
Application number: PCT/CN2017/092373
Authority: WO
Inventors: 白光辉; 蔡幼忠; 谷龙飞; 李硕; 马文利
Original assignee: 中国恩菲工程技术有限公司
Priority date: 2016-07-21
Filing date: 2017-07-10
Publication date: 2018-01-25

Abstract

A low-voltage power distribution system and a multi-function instrument for the low-voltage power distribution system. The multi-function instrument comprises: an instrument body (100); a current collector (10) arranged in the instrument body (100), wherein the current collector (10) is connected to a low-voltage power distribution loop, so as to collect a current of the low-voltage power distribution loop in real time; a register (20) arranged in the instrument body (100), wherein the register (20) is connected to the current collector (10), so as to record the maximum current collected by the current collector (10) in a current scanning period; and a communication unit (30) arranged in the instrument body (100), wherein the communication unit (30) is connected to the register (20), so as to send, after establishing a communication connection with an upper-layer control system (200), the maximum current collected by the current collector (10) in the current scanning period to the upper-layer control system (200). The multi-function instrument can ensure that an upper-layer control system (200) collects, in each scanning period, the maximum current appearing in a low-voltage power distribution loop, so as to facilitate the upper-layer control system (200) in issuing a corresponding control command, thereby ensuring the secure and reliable operation of the power distribution system.

Description

Low-voltage power distribution system and multi-function instrument for low-voltage power distribution system

Technical field

The invention relates to the technical field of power supply and distribution, in particular to a multifunctional instrument for a low-voltage power distribution system and a low-voltage power distribution system.

Background technique

In a low-voltage power distribution system, an ammeter is usually used to measure the current of the low-voltage distribution circuit, so that the on-site inspection personnel can check the current of a certain distribution circuit to know whether the corresponding equipment is operating normally. However, on-site inspection personnel may not be able to detect problems in time, and current anomalies are sometimes intermittent, not necessarily during inspections. In either case, it may lead to problems that cannot be resolved in time, thus affecting normal production and even endangering personal and property safety.

Summary of the invention

The present invention aims to solve at least one of the technical problems in the above-mentioned techniques to some extent. To this end, it is an object of the present invention to provide a multi-function meter for a low-voltage power distribution system that is capable of recording the maximum current that occurs in a low-voltage distribution loop during each scan cycle, thereby ensuring that the upper-level control system can be in each scan cycle. The maximum current that occurs in the low-voltage distribution circuit can be collected, so that the upper control system can issue the corresponding control commands to ensure the safe and reliable operation of the entire power supply and distribution system.

Another object of the present invention is to provide a low voltage power distribution system.

In order to achieve the above object, a multi-function meter for a low-voltage power distribution system according to an embodiment of the present invention includes: a meter body; a current collector disposed in the meter body, the current collector connected to a low voltage The power distribution circuit collects the current of the low voltage distribution circuit in real time; a register in the body, the register is connected to the current collector to record a maximum current collected by the current collector in a current scanning period; a communication unit disposed in the meter body The communication unit is connected to the temporary storage device, and the communication unit sends the maximum current collected by the current collector in the current scanning period to the upper layer control after establishing a communication connection with the upper layer control system. system.

The multi-function meter for the low-voltage power distribution system according to the embodiment of the invention records the maximum current collected by the current collector in the current scanning period through the register, thereby recording the occurrence of the low-voltage power distribution circuit in each scanning period. The maximum current, and after establishing a communication connection between the communication unit and the upper control system, uploads the maximum current of the low-voltage distribution circuit in each scanning cycle to the upper control system, so that the upper control system can collect in each scanning cycle. The maximum current that occurs in the low-voltage distribution circuit, so that the upper control system can generate and issue the corresponding control commands to ensure the safe and reliable operation of the entire power supply and distribution system.

The buffer collects the current collection during the current scan period when the communication unit sends the maximum current collected by the current collector in the current scan period to the upper control system. The maximum current collected by the device.

Preferably, the communication unit communicates with the upper layer control system by using an RS485 protocol.

Preferably, the above multi-function meter for the low-voltage power distribution system further comprises a display unit to display the measurement parameters of the multi-function meter for convenient viewing.

Specifically, the current collector employs a current transformer, and the current transformer is connected in series in the low voltage distribution circuit.

In addition, embodiments of the present invention also provide a low voltage power distribution system including the above-described multi-function meter for a low voltage power distribution system.

The low-voltage power distribution system of the embodiment of the invention can record the maximum current of the low-voltage power distribution circuit in each scanning cycle by the above-mentioned multi-function meter, so that the upper layer control system can collect the low-voltage power distribution in each scanning period. The maximum current that occurs in the loop, which facilitates the generation and dispatch of the corresponding control commands by the upper control system to ensure the safe and reliable operation of the entire power supply and distribution system.

DRAWINGS

1 is a block diagram showing a low voltage power distribution system and a multi-function meter for a low voltage power distribution system according to an embodiment of the present invention;

2 is a block schematic diagram of a low voltage power distribution system and a multi-function meter for a low voltage power distribution system in accordance with an embodiment of the present invention.

detailed description

The embodiments of the present invention are described in detail below, and the examples of the embodiments are illustrated in the drawings, wherein the same or similar reference numerals are used to refer to the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are intended to be illustrative of the invention and are not to be construed as limiting.

A multi-function meter and a low-voltage power distribution system for a low-voltage power distribution system according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

1 is a block schematic diagram of a multi-function meter for a low voltage power distribution system in accordance with an embodiment of the present invention. As shown in FIG. 1, the multi-function meter for the low-voltage power distribution system includes a meter body 100, a current collector 10, a register 20, and a communication unit 30.

The current collector 10 is disposed in the meter body 100, and the current collector 10 collects the current of the low voltage distribution circuit in real time through the incoming and outgoing lines connected to the low voltage distribution circuit. Specifically, current The current collector 10 can be used in the collector 10, and the current transformer is connected in series in the low voltage distribution circuit to detect the current of the low voltage distribution circuit in real time.

As shown in FIG. 1, the register 20 is disposed in the meter body 100, and the register 20 is connected to the current collector 10 to record the maximum current value collected by the current collector 10 during the current scanning period. The communication unit 30 is disposed in the meter body 100, the communication unit 30 is connected to the temporary storage unit 20, and the communication unit 30 can establish a communication connection with the upper layer control system 200 through the communication interface 40, and is established between the upper layer control system 200 and the upper layer control system 200. After the communication connection, the maximum current value collected by the current collector 10 in the current scanning period is sent to the upper layer control system 200.

Further, the buffer 20 clears the maximum current collected by the current collector 10 during the current scanning period of the recording when the communication unit 30 transmits the maximum current collected by the current collector 10 to the upper layer control system 200 during the current scanning period. In other words, when the maximum current value is reported to the upper control system, the register starts to re-record the maximum current value of the next scan cycle.

That is to say, after the upper control system 200 completes collecting the data of the multi-function meter, the register 20 automatically clears the maximum current value of the old record, and then the register 20 restarts recording the low-voltage distribution circuit in the next scan period. The maximum current value.

Preferably, according to an embodiment of the present invention, as shown in FIG. 1 or 2, the communication unit 30 can communicate with the upper layer control system 200 through the communication interface 40 by using the RS485 protocol to implement fast data interaction.

Specifically, as shown in FIG. 2, the above-mentioned multi-function meter for the low-voltage power distribution system further includes a display unit 50, for example, a display screen to display measurement parameters of the multi-function meter, thereby facilitating viewing.

In summary, the multi-function meter for the low-voltage power distribution system proposed by the embodiment of the invention has the function of automatically recording the maximum current value in the low-voltage power distribution circuit, and the low-voltage power distribution system is constructed by using the multi-function meter. Achieve more reasonable signal acquisition and monitoring, and more advanced current monitoring information transmission methods, It has a more timely overload protection control function, which can produce better protection measures and ensure safe use of electricity.

The multi-function meter for the low-voltage power distribution system according to the embodiment of the present invention can record the maximum current value collected by the current collector in the current scanning period through the register, so that the low-voltage distribution circuit can be recorded in each scanning period. The maximum current value, and after establishing a communication connection between the communication unit and the upper control system, upload the maximum current value of the low-voltage distribution circuit in each scanning cycle to the upper control system, so that the upper control system can be in each scanning cycle. The maximum current value of the low-voltage distribution circuit can be collected, so that the upper control system can monitor whether the current is abnormal or not, and ensure the safe and reliable operation of the entire power supply and distribution system.

Further, embodiments of the present invention also propose a low voltage power distribution system including the above-described multi-function meter for a low voltage power distribution system.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " After, "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inside", "Outside", "Clockwise", "Counterclockwise", "Axial", The orientation or positional relationship of the "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present invention and simplified description, and does not indicate or imply the indicated device or component. It must be constructed and operated in a particular orientation, and is not to be construed as limiting the invention.

Moreover, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, the "first" is defined, The "second" feature may include at least one of the features, either explicitly or implicitly. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless specifically defined otherwise.

In the present invention, the terms "installation", "connected", "connected", "fixed" and the like shall be understood broadly, and may be either a fixed connection or a detachable connection, unless explicitly stated and defined otherwise. , or integrated; can be mechanical or electrical connection; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction of two elements, unless otherwise specified Limited. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

In the present invention, the first feature "on" or "under" the second feature may be a direct contact of the first and second features, or the first and second features may be indirectly through an intermediate medium, unless otherwise explicitly stated and defined. contact. Moreover, the first feature "above", "above" and "above" the second feature may be that the first feature is directly above or above the second feature, or merely that the first feature level is higher than the second feature. The first feature "below", "below" and "below" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely that the first feature level is less than the second feature.

In the description of the present specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means a specific feature described in connection with the embodiment or example. A structure, material or feature is included in at least one embodiment or example of the invention. In the present specification, the schematic representation of the above terms is not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, various embodiments or examples described in the specification, as well as features of various embodiments or examples, may be combined and combined.

Although the embodiments of the present invention have been shown and described, it is understood that the above-described embodiments are illustrative and are not to be construed as limiting the scope of the invention. The embodiments are subject to variations, modifications, substitutions and variations.

Claims

A multifunctional instrument for a low voltage power distribution system, comprising:

Instrument body

a current collector disposed in the meter body, the current collector being connected to the low voltage power distribution circuit to collect current of the low voltage power distribution circuit in real time;

a register disposed in the meter body, the register being coupled to the current collector to record a maximum current collected by the current collector during a current scan period;

a communication unit disposed in the meter body, the communication unit is connected to the register, the communication unit is configured to perform the current in the current scan period after establishing a communication connection with the upper control system The maximum current collected by the collector is sent to the upper control system.
The multi-function meter for a low-voltage power distribution system according to claim 1, wherein said register transmits said maximum current collected by said current collector during said current scanning period at said communication unit The maximum current collected by the current collector during the current scan period of the record is cleared when the upper control system is given.
The multi-function meter for a low-voltage power distribution system according to claim 1 or 2, wherein the communication unit and the upper layer control system communicate using the RS485 protocol.
A multifunction meter for a low voltage power distribution system according to claim 1, further comprising a display unit to display measurement parameters of said multifunction meter.
A multi-function meter for a low voltage power distribution system according to claim 1, wherein said current collector employs a current transformer, said current transformer being connected in series in said low voltage distribution circuit.
A low voltage power distribution system characterized by comprising any one of claims 1-5 A multi-function meter for low-voltage power distribution systems.