Intelligent low-voltage switch cabinet is a new generation of product equipment, this product adopts the most advanced information technology for design and production, in line with the requirements of type test, the incoming cabinet with a four-remote function circuit breaker, the feeder cabinet with powerful intelligent controller through the use of modular design, assembly. It can meet the requirement of intelligent equipment of power supply system and distribution room. Intelligent low voltage switchgear complete set of equipment can cooperate with load monitoring control management system to achieve automatic control in the process of automatic management of distribution room. Intelligent low-voltage switch cabinet complete equipment is a fault alarm system in one device, using communication fiber and other wireless communication network and computer monitoring control management system interconnection, remote monitoring of distribution equipment status, online monitoring fault alarm, remote control switching operation and other main functions.

I. comprehensive advantages of intelligent low-voltage switchgear

Intelligent low-voltage switchgear complete set of equipment can complete data acquisition and control, alarm, graphic data display and other functions of complete industrial automation software. The data communication system USES the field network and the industrial computer connected network. The configuration of the scheme reflects the advantages of decentralized control system, that is, control functions are scattered and operation management is centralized. Decentralized control means fast real-time response and hardware composition. The standard modular structure, power supply, CPU, all kinds of I/O modules are inserted in a motherboard, and according to different I/O points to increase the expansion of motherboard, input, output modules and memory fine classification, so that this device has a strong configuration adaptability; Communication between PLC and computer can be easily realized through communication processor and local network. The programming work is greatly simplified, and the programs are well organized and easy to read, modify and test.

Intelligent low-voltage switchgear complete set of equipment solutions

The bus system is established in the low-voltage intelligent switch cabinet to completely solve the channel problem of front-end signal acquisition and transmission.

Through the connection switch, the circuit is operated under the heavy load of several transformers, and the residual capacity is automatically selected to convert in the interval of several transformers. The multi-loop sharing load of transformer group fundamentally solves the serious overload phenomenon of a certain transformer. Feed circuit needs to measure and control the amount of: switch state and protection action state, single-phase current, remote control operation. When the system is up. Data is sent to the control center via fiber optics and sent over the web to the phone. Site operators can see the mobile phone, know the switching status and operating load of each transformer.

Intelligent low-voltage switchgear industrial control integrated machine (industrial control single chip microcomputer), is the use of fanless touch screen industrial control machine. The touch screen industrial control has high performance, low price and stable function. Embedded industrial control computer (ipc) is a compact computer specially designed for industrial field. It is a kind of reinforced industrial computer, which can operate reliably in industrial environment as an industrial controller. Common embedded ipc has box ipc, no fan ipc and so on. The embedded ipc has the advantages of reliable performance, fanless structure, small size and low price. Especially in recent years, with the development of embedded technology, embedded industrial computer is also developing rapidly, and soon applied to various fields, and occupies an increasingly important position.

1. The number of information points

Power parameter reading: apparent power, active power, reactive power, power factor, instantaneous power, average power. A/B/C phase voltage current, forward and backward charge.

2. Logical judgment order

Online monitoring and fault diagnosis of electrical equipment are the basic means of intellectualization, while automatic control realizes relay action by automatically outputting switch quantity after matching parameters according to preset parameter values.

3. Basis for circuit switching

Low-voltage intelligent switch cabinet is a highly integrated and digitized equipment, which adopts computer technology as the core technology of digitized control. In terms of control and protection functions, the optimal mode is automatically selected for control and protection according to the state of switch and operation mode of power grid. Voltage and current sensors and transmitters collect field data, which are converted into digital signals by PLC or single chip microcomputer. These digital signals are transmitted to the upper computer through communication equipment.

After receiving the data, the configuration software makes necessary calculation and judgment, and then feeds the data back to PLC or single chip microcomputer, which distributes the data. PLC equipment itself has automatic detection function, on the inside of the equipment

Temperature rise, electromagnetic radiation, mechanism failure signal acquisition and analysis.

The closed-loop control is used to continuously calculate the total load capacity of each transformer and the current flow of each circuit. If the total capacity of the transformer exceeds the specified value, check the difference between the remaining capacity of another transformer and the circuit of this transformer and transfer the circuit to another transformer.

4. Low-voltage power grid system is equipped with self-feeding PLC configuration;

Display lamp and 2 closing and opening buttons are set in the incoming circuit; The circuit is equipped with 1 remote/local selector switch, 1 operation mode selector switch, 2 closing and opening buttons and 2 display lights.

Two display lights and two closing and opening buttons are set on the total load switch. When the remote/local selector switch set in the bus segment circuit is placed in "local", all 5 circuit breakers in the whole system are operated by manual buttons; On the contrary, when the bus segment circuit setting remote/local selection switch is placed "remote", all 5 circuit breakers in the whole system are operated automatically.

Remote operation mode is included in automatic mode. When the operating mode selection switch of bus segment circuit is set in "remote control R", all 5 circuit breakers in the whole system are set in the same operating mode.

Iii. Operation and control mode

1, 800A circuit breaker trip protection

2. Manually switch on and off

3, electric switching

4. PLC logic programming

5, the remote opening and closing

6. Over current over limit fault alarm

7. Remote parameter setting

8. Environmental constant temperature and humidity control

Capacitor compensation control

10. Frequency conversion and energy saving control

Main products: baoding dry type transformer, baoding box type transformer, baoding oil immersed transformer, baoding high and low voltage complete sets of equipment. I companies to follow "detail decides success or failure, honesty molded the future" of the enterprise purpose, adhere to "quality measuring market, seek development by innovation, to management for efficiency" business philosophy, to make my company's products are widely used in power plant, chemical, construction, mining, metallurgy, rail transportation and other industries, to meet the needs of various users, my company rely on superior product quality, thoughtful service, won the trust of our customers.