CN211956172U

CN211956172U - Intelligent electrical comprehensive monitoring device and low-voltage electrical switch equipment

Info

Publication number: CN211956172U
Application number: CN202020583976.7U
Authority: CN
Inventors: 王泊志; 叶春志; 余劲; 马世成
Original assignee: Sichuan Haboat Electrical Co ltd
Current assignee: Sichuan Haboat Electrical Co ltd
Priority date: 2020-04-17
Filing date: 2020-04-17
Publication date: 2020-11-17
Anticipated expiration: 2030-04-17

Abstract

The utility model provides an intelligent electrical comprehensive monitoring device and low-voltage electrical switch equipment, which relate to the field of electrical comprehensive monitoring and comprise a microprocessor, a memory, a main substrate, a communication module, a power supply, a measurement and control module, a measurement and control interface unit and a mutual inductor; the microprocessor, the memory, the communication module and the power supply are in communication connection with the main substrate; the measurement and control interface unit is in communication connection with the communication module, the measurement and control module, the mutual inductor and the expanded measurement and control interface unit respectively, has full electrical parameter measurement, monitoring of harmonic wave monitoring, fault filtering, on-off state, alarm information and the like, and detection and analysis of the service life of a switch, covers various communication protocols and wired and wireless communication connection modes, has the characteristics of perfect functions, structural integration, intelligent operation and the like, greatly reduces the space occupation, reduces the product cost and optimizes the structural layout.

Description

Intelligent electrical comprehensive monitoring device and low-voltage electrical switch equipment

Technical Field

The utility model relates to an electrical integrated monitoring field especially relates to an electrical integrated monitoring device of intelligence and low pressure electrical switchgear.

Background

In the power transformation and distribution in the power industry, electrical parameters need to be acquired for an incoming feeder circuit and switching electric equipment, and the incoming feeder circuit and the switching electric equipment are monitored, measured, controlled and protected in real time. Most of the circuits, devices and instruments are installed in the switch cabinet. The traditional monitoring, measuring, controlling and protecting are all an integral single functional unit, are generally installed on a panel of a switch cabinet, and need to be connected through a current transformer installed on a primary loop, and the current transformer is installed in the switch cabinet, so that the wiring is too long, the wiring is complex, the occupied space is large, and the wiring inconvenience is brought to users. The power supply mode is secondary variable current power supply, namely, primary variable current is firstly carried out through a current transformer on a primary loop, and secondary variable current is carried out through a current transformer arranged in the primary loop, so that the cost is high, the function is single, and the user requirements cannot be met.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: to the problem that prior art exists, provide an electric comprehensive monitoring device of intelligence and low voltage electrical switchgear, solve traditional equipment function singleness, equipment layout dispersion occupation space's problem and the higher problem of traditional equipment cost.

The utility model adopts the technical scheme as follows:

an intelligent electrical comprehensive monitoring device comprises a microprocessor, a memory, a main substrate, a communication module, a power supply, a measurement and control module, a measurement and control interface unit and a mutual inductor;

the microprocessor, the memory, the communication module and the power supply are in communication connection with the main substrate;

the measurement and control interface unit is in communication connection with the communication module, the measurement and control module, the mutual inductor and the expanded measurement and control interface unit respectively.

The microprocessor and the memory are connected with the main substrate through slots; the communication module and the power supply are in communication connection with the main substrate through cables.

The measurement and control interface unit is in communication connection with the communication module through a first RS485 interface; the second RS485 interface is in communication connection with the measurement and control module; the measurement and control interface unit is expanded through a third RS485 interface; the communication module and the measurement and control module are in communication connection with each other through the RJ 45; the mutual inductor is in communication connection with the measurement and control interface unit through the wiring terminal.

Furthermore, the device also comprises a switch cabinet,

and the microprocessor, the memory, the main substrate, the communication module, the power supply, the measurement and control module, the measurement and control interface unit and the mutual inductor are expanded and integrated in the switch cabinet.

The switch cabinet consists of a panel and a cabinet body, and further comprises a primary loop consisting of electrical equipment.

In addition, this application still provides the low-voltage electrical switchgear including above-mentioned intelligent electric comprehensive monitoring device, still includes display element and monitoring accuse security object.

The display unit is an LED display screen, is provided with a plug port RJ45 and is in communication connection with the main substrate through a cable.

The monitoring and controlling protected object is in communication connection with the monitoring and controlling interface unit through analog input and output terminals AI and AO and digital input and output terminals DI and DO.

The monitoring and protecting objects comprise circuit breakers, motors, electric fires and instrument-like objects.

Furthermore, the system also comprises an external device which is an upper computer and/or a programmable logic controller and is provided with a plug-in port RJ45 connected with the communication module.

Since the technical scheme is adopted, the beneficial effects of the utility model are that: the intelligent electric comprehensive monitoring device can monitor the state information of the loop and the equipment in a centralized manner; the low-voltage electrical switch equipment has the functions of full electrical parameter acquisition, line protection, motor protection, electrical fire monitoring and the like in power transformation and distribution, service life detection and aging analysis (including mechanical service life, electrical service life and contact wear state) of a breaker switch and the like by arranging a monitoring and controlling protection object; furthermore, the utility model discloses still possess multiple common communication protocol and wired wireless communication connected mode and real-time data sharing and remote monitoring function.

Drawings

Fig. 1 is a schematic structural view of the intelligent electrical comprehensive monitoring device of the present invention;

fig. 2 is a schematic diagram of a low-voltage electrical switching apparatus.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The structure of the intelligent electrical comprehensive monitoring device is shown in figure 1, and the device system comprises a microprocessor, a memory, a main substrate, a communication module, a power supply, a measurement and control module, a measurement and control interface unit and a mutual inductor. The microprocessor, the memory, the main substrate, the communication module, the power supply, the measurement and control module, the measurement and control acquisition interface unit and the mutual inductor can be integrated into a whole and arranged in a switch cabinet, the switch cabinet mainly comprises a panel and a cabinet body, and a primary loop consisting of various electrical equipment is arranged in the switch cabinet.

The microprocessor, the memory, the main substrate, the communication module and the power supply are basic components of the device; the measurement and control module, the measurement and control interface unit and the mutual inductor are used as necessary extensible optional components to be connected with the basic components.

The communication module is in communication connection with the measurement and control acquisition interface unit through a first RS485 interface, and the communication module covers common communication protocols such as TCP/IP, MODBUS/RS485, RTU, PROFIBUS, CAN and the like and has wireless and wired communication connection modes. In addition, the system is also in communication connection with the measurement and control module through the RJ 45.

The measurement and control module is in communication connection with the measurement and control acquisition interface unit through a second RS485 interface, processes acquired related original electrical data, generates protection parameters according to needs, and responds the protection parameters by the communication module, wherein the types OF the protection parameters comprise acquisition and measurement OF line voltage, phase voltage, line current, phase current, frequency, active power, reactive power, power factors and the like OF a circuit breaker, harmonic monitoring, fault filtering, SOE information, switch states (OF, SD, SDE and the like), short circuit, overcurrent and other protection after calculation and processing, switch life detection and aging analysis (including mechanical life, electrical life and contact wear state) and the like are given; detecting the voltage, current and the like of the motor, and giving overvoltage, undervoltage, overcurrent, overheating, locked rotor, grounding protection and the like after calculation; detecting zero sequence current, temperature, etc. and performing calculation processing to obtain electric fire protection, etc.; and related data of the feeder switch are collected and measured to replace the function of the electric energy meter.

The microprocessor and the memory are connected with the main substrate through the slots, the communication module is connected with the main substrate through the cables, the power supply is connected with the main substrate through the cables, and the AC220V input DC24V output is provided to supply power to the whole device.

The measurement and control acquisition interface units can be multiple, are connected through a daisy chain of the third RS485 interface, are directly connected with the primary loop through the mutual inductor, acquire electrical data from the primary loop and send the electrical data to the measurement and control module for processing.

The mutual inductor is connected with the measurement and control acquisition interface unit through a wiring terminal, the measurement is in mA level, the precision is in 0.2 level, and the shell is made of PC plastic.

Referring to fig. 1 and 2, the intelligent electrical comprehensive monitoring device is arranged in a low-voltage electrical switching apparatus, and the low-voltage electrical switching apparatus further includes a display unit, a monitoring and protection object, and an optional external device. The display unit is arranged on a panel of the intelligent electrical comprehensive monitoring device, and a monitoring control object is arranged in the switch equipment; the upper computer is arranged outside the switch device, and the programmable logic controller is arranged in the switch device. And the display unit, the optional external equipment and the monitoring control protection object are respectively connected with the relevant interfaces of the intelligent electric comprehensive monitoring device.

The display unit is an LED display screen and is used for displaying and setting monitoring and controlling the parameters of the protected object, and the display unit is provided with a plug port RJ45 which is in communication connection with a main substrate of the intelligent electrical comprehensive monitoring device through a cable.

The monitoring and control protected object is in communication connection with the corresponding monitoring and control interface unit through a lead and a mutual inductor through analog input and output terminals AI and AO and digital input and output terminals DI and DO. The monitoring, controlling and protecting objects comprise a circuit breaker, a motor, an electrical fire, a similar instrument and the like; the measurement and control acquisition interface unit and the mutual inductor respectively correspond to related monitoring and control protection objects such as a circuit breaker, a motor, an electrical fire, a class instrument and the like and are connected through cables.

Optional external equipment passes through RJ45 and intelligent electric comprehensive monitoring device's communication module communication connection. The external equipment can be an upper computer, a programmable logic controller and the like. The upper computer is used for uploading and downloading data to the device; the programmable logic controller is connected with the communication module by a cable and is used for uploading the existing program and downloading the updated program to the device to control the object.

The utility model discloses can realize that full electric capacity measures and keeps watch on, report to the police, digital quantity analog input/output, harmonic content, data record, clock, fixed mode waveform is caught, load trend prediction, and adjustable mode wave is caught, voltage swell/swell is kept watch on, switch life-span detects and aging analysis (including mechanical life, electric life, contact wearing and tearing state), motor protection, electric fire monitoring etc. can also accurate monitoring system's leakage current, electric performance such as the normal atmospheric temperature of non-rises such as cable and switch board and failure alarm information etc.. The device contains various wireless communication protocols and wired communication protocols, such as TCP/IP, MODBUS/RS485, RTU, PROFIBUS, CAN, etc. The intelligent power distribution system has the characteristics of complete functions, integrated structure, intelligent operation and the like, greatly reduces the space occupation, reduces the product cost, optimizes the structural layout and is the future development direction of the power distribution industry.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention should be included.

Claims

1. The utility model provides an electric comprehensive monitoring device of intelligence which characterized in that: the system comprises a microprocessor, a memory, a main substrate, a communication module, a power supply, a measurement and control module, a measurement and control interface unit and a mutual inductor;

2. The intelligent electrical integrated monitoring device according to claim 1, characterized in that: the microprocessor and the memory are connected with the main substrate through the slots; the communication module and the power supply are in communication connection with the main substrate through cables.

3. The intelligent electrical integrated monitoring device according to claim 1, characterized in that: the measurement and control interface unit is in communication connection with the communication module through a first RS485 interface; the second RS485 interface is in communication connection with the measurement and control module; the measurement and control interface unit is expanded through a third RS485 interface; the communication module and the measurement and control module are in communication connection with each other through the RJ 45; the mutual inductor is in communication connection with the measurement and control interface unit through the wiring terminal.

4. The intelligent electrical integrated monitoring device according to claim 1, characterized in that: also comprises a switch cabinet which is provided with a switch cabinet,

5. The intelligent electrical integrated monitoring device of claim 4, wherein: the switch cabinet is composed of a panel and a cabinet body, and further comprises a primary loop composed of electrical equipment.

6. A low-voltage electrical switching apparatus comprising an intelligent electrical complex monitoring device according to any of claims 1-5, characterized in that: the system also comprises a display unit and a monitoring control and protection object.

7. A low-voltage electrical switching apparatus as claimed in claim 6, wherein: the display unit is an LED display screen, is provided with a plug port RJ45 and is in communication connection with the main substrate through a cable.

8. A low-voltage electrical switching apparatus as claimed in claim 6, wherein: the monitoring and control protected object is in communication connection with the monitoring and control interface unit through analog input and output terminals AI and AO and digital input and output terminals DI and DO.

9. A low-voltage electrical switching apparatus as claimed in claim 6, wherein: the monitoring and monitoring security objects comprise circuit breakers, motors, electric fires and instrument-like objects.

10. A low-voltage electrical switching apparatus as claimed in claim 6, wherein: the system also comprises an external device which is an upper computer and/or a programmable logic controller and is provided with a socket RJ45 connected with the communication module.