CN204361910U - A kind of container water-cooled medium-voltage frequency conversion system electric-controlled house - Google Patents

Abstract

The utility model discloses a container water-cooled medium-voltage frequency conversion system electric control room, which includes a container room body and components inside the room body, and the internal components of the room body include a first outlet board, a second outlet board, a third outlet board, Medium voltage switchgear group, first rectifier transformer, second rectifier transformer, first intermediate frequency transformer, second intermediate frequency transformer, first radiator, second radiator, industrial computer, PLC control system and auxiliary system. The utility model provides a containerized water-cooled medium-voltage frequency conversion system electric control room. The electric control room meets the requirements of domestic road transportation restrictions. Two medium-voltage frequency converters and their matching rectifier transformers are integrated in one room. It can save floor area, and its transportation is convenient, which effectively saves costs. At the same time, it can realize the factory standardized production and debugging of the electric control room, and shorten the production cycle of the electric control room.

Description

A containerized water-cooled medium-voltage frequency conversion system electric control room

technical field

The utility model relates to an electric control room of a medium-voltage frequency conversion system, in particular to a container water-cooled medium-voltage frequency conversion system electric control room.

Background technique

In recent years, with the large-scale application of medium-voltage frequency converters in various industries such as petroleum, metallurgy, and chemical industry, it can not only save a lot of energy, but also improve the safety and stability of system operation, and reduce the workload of later inspection and maintenance. However, in the process of using the medium-voltage frequency converter, the traditional method is to first construct the medium-voltage frequency conversion room, which not only causes a great waste of land resources, but also causes a great waste of personnel and materials due to the long construction period. If the equipment needs to be reused, it will cause The relocation and repeated construction will increase the cost of use; in places where transportation is inconvenient and the environment is harsh, the construction of medium-voltage frequency conversion houses is more difficult and the construction cost is higher.

Utility model content

The purpose of this utility model is to overcome the deficiencies of the prior art, and provide a containerized water-cooled medium-voltage frequency conversion system electric control room, which meets the requirements of domestic road transportation restrictions, and integrates two medium-voltage frequency converters in one room And its matching rectifier transformer and other equipment can save floor space, and its transportation is convenient, which can effectively save costs. At the same time, it can realize the factory standardized production and debugging of the electric control room, and shorten the production cycle of the electric control room.

The purpose of this utility model is achieved through the following technical solutions: a container water-cooled medium-voltage frequency conversion system electric control room, which includes a container body and components inside the body, and the components inside the body include the first outlet board, the second Second outlet board, third outlet board, medium voltage switchgear group, first rectifier transformer, second rectifier transformer, first intermediate frequency transformer, second intermediate frequency transformer, first radiator, second radiator, industrial computer, PLC control system and auxiliary system; the first outlet board is connected to the external power supply input to the medium-voltage switchgear group, and the medium-voltage switchgear group is respectively connected to the first rectifier transformer and the second rectifier transformer, and the voltage rectified by the first rectifier transformer is transmitted to the first The medium-voltage inverter is output by the second outlet board after frequency conversion, the voltage rectified by the second rectifier inverter is transmitted to the second medium-voltage inverter, and output by the third outlet board after frequency conversion, the first radiator and the second The second radiator dissipates heat for the first medium-voltage inverter and the second medium-voltage inverter, and the PLC control system controls the first medium-voltage inverter and the second medium-voltage inverter respectively. The PLC control system also communicates with the industrial computer and the second medium-voltage inverter. Auxiliary system connection.

The medium-voltage switchgear group is arranged at the left end of the container house body, the first outlet board is arranged on the front panel of the house body at a position corresponding to the medium-voltage switchgear group, and the right side of the medium-voltage switchgear group is sequentially provided with a first rectifier The transformer and the second rectifier transformer, the first medium-voltage inverter and the second outlet board, the second medium-voltage inverter and the third outlet board, the PLC control system, the industrial computer and the auxiliary system are arranged on the right side of the second rectifier transformer. A medium-voltage inverter, the second outlet board and PLC controller are arranged on the rear board of the house, the second medium-voltage inverter, the third outlet board, industrial computer and auxiliary systems are arranged on the front board of the house, and the first cooling The radiator and the second radiator are arranged at the right end of the container house body, wherein the first radiator is close to the rear plate of the house body, and the second radiator is close to the front plate of the house body.

The first outgoing version includes 10kV power input, 400VAC power input and network interface.

The PLC control system is a cold standby redundant dual-channel PLC system, which includes CPU and I/O modules, miniature circuit breakers and relays, USP continuous power supply and terminals.

The auxiliary system includes an air conditioner, a socket, a smoke alarm, a temperature and humidity sensor and a fluorescent lamp, and the air conditioner, the smoke alarm and the temperature and humidity sensor are respectively connected to the PLC control system.

The beneficial effects of the utility model are: the utility model provides a containerized water-cooled medium-voltage frequency conversion system electric control room, which meets the requirements of domestic road transportation restrictions, and integrates two medium-voltage frequency converters and Its supporting rectifier transformer and other equipment can save floor space, and its transportation is convenient, which effectively saves costs. At the same time, it can realize the factory standardized production and debugging of the electric control room, and shorten the production cycle of the electric control room.

Description of drawings

Figure 1 is a structural diagram of the medium voltage inverter system;

Figure 2 is a schematic diagram of the layout of the electric control room.

Detailed ways

The technical scheme of the utility model is further described in detail below in conjunction with the accompanying drawings, but the protection scope of the utility model is not limited to the following description.

As shown in Figure 1, a containerized water-cooled medium-voltage frequency conversion system electric control room includes a container body and components inside the room. The components inside the room include a first outlet board, a second outlet board, and a third outlet board. , medium voltage switchgear group, first rectifier transformer, second rectifier transformer, first intermediate frequency transformer, second intermediate frequency transformer, first radiator, second radiator, industrial computer, PLC control system and auxiliary system; first outgoing line The board is connected to the external power supply input to the medium-voltage switchgear group, and the medium-voltage switchgear group is respectively connected to the first rectifier transformer and the second rectifier transformer, and the voltage rectified by the first rectifier transformer is transmitted to the first medium-voltage inverter. Output from the second outlet board, the voltage rectified by the second rectifier inverter is transmitted to the second medium voltage inverter, and output by the third outlet board after frequency conversion, the first radiator and the second radiator respectively The high-voltage frequency converter and the second medium-voltage frequency converter perform heat dissipation, and the PLC control system controls the first medium-voltage frequency converter and the second medium-voltage frequency converter respectively, and the PLC control system is also connected with the industrial computer and the auxiliary system.

As shown in Figure 2, the medium-voltage switchgear group is arranged at the left end of the container house body, the first outlet plate is arranged on the front plate of the house body at the position corresponding to the medium-voltage switchgear group, and the right side of the medium-voltage switchgear group The first rectifier transformer and the second rectifier transformer are installed in sequence, and the right side of the second rectifier transformer is provided with the first medium-voltage inverter and the second outlet board, the second medium-voltage inverter and the third outlet board, PLC control system, industrial control Machine and auxiliary system, the first medium voltage inverter, the second outlet board and PLC controller are arranged on the rear panel of the house, the second medium voltage inverter, the third outlet board, industrial computer and auxiliary system are arranged in front of the house On the board, the first radiator and the second radiator are arranged at the right end of the container house, wherein the first radiator is close to the rear plate of the house, and the second radiator is close to the front plate of the house.

The first outgoing version includes 10kV power input, 400VAC power input and network interface. The 10kV power input adopts direct cable connection due to the high voltage level; while the 400VAC power input uses quick connectors; the network interface uses quick connectors.

The 10kV cable incoming line is connected to the medium-voltage switchgear group, and its breaking is controlled by the medium-voltage switchgear group and the second medium-voltage frequency converter. The medium-voltage switchgear group has protection functions such as quick disconnection, overcurrent, and low voltage.

The 10kV cables are respectively connected to the first rectifier transformer and the second rectifier transformer through the medium-voltage switchgear group. The two rectifier transformers use 12-pulse phase-shifting rectifier transformers. In addition to converting the 10kV voltage to the input voltage level required by the medium-voltage inverter In addition, it has a strong harmonic suppression ability, which can effectively improve the power quality.

The first medium-voltage inverter and the second medium-voltage inverter use DTC direct torque control to control the speed and torque of the AC variable frequency motor; the working principle of the inverter is: the main circuit of the inverter includes two parts: a rectifier unit and an inverter unit , the three-phase alternating power output from the electric control room, the three-phase alternating power with fixed frequency is input from the R, S and T terminals, and after full-wave rectification by the three-phase rectifier bridge composed of diodes VD1~VD6, it becomes Direct current, a three-phase inverter bridge composed of 6 insulated gate transistors V1~V6, which inverts the direct current into a three-phase alternating current whose frequency and voltage can be adjusted arbitrarily. Output to the AC variable frequency motor.

Most of the heat generated by the first medium-voltage inverter and the second medium-voltage inverter passes through the circulating water cooling system, and is cooled by the integrated first radiator and the second radiator.

The PLC control system is a cold standby redundant dual-channel PLC system, which includes CPU and I/O modules, miniature circuit breakers and relays, USP continuous power supply and terminals. Power distribution of UPS and each miniature circuit breaker integrated cabinet control system; CPU and I/O modules ensure the logic processing control of the system; industrial computer provides display and recording of data and other important parameters through a friendly man-machine interface , query and storage. The entire system can be remotely monitored through the industrial Internet.

The auxiliary system includes an air conditioner, a socket, a smoke alarm, a temperature and humidity sensor and a fluorescent lamp, and the air conditioner, the smoke alarm and the temperature and humidity sensor are respectively connected to the PLC control system. The air conditioner takes away the heat generated by the transmission system in the room through forced blowing, and keeps the transmission and electric control system working normally within the normal temperature range. The control unit regulates the temperature and humidity in the room, and sends out an alarm when it exceeds the set range.

Claims (5)

1. a container water-cooled medium-voltage frequency conversion system electric-controlled house, it is characterized in that: it comprises the device of container house body and body inside, room, room body internal components comprises the first outlet board, the second outlet board, the 3rd outlet board, Medium voltage switch or circuit breaker group, the first rectifier transformer, the second rectifier transformer, the first intermediate frequency transformer, the second intermediate frequency transformer, the first radiator, the second radiator, industrial computer, PLC control system and comprises the auxiliary system of air-conditioning, socket, smoke alarm, Temperature Humidity Sensor and fluorescent lamp, first outlet board connects external power source and is input to Medium voltage switch or circuit breaker group, Medium Voltage Switchgear group connects the first rectifier transformer and the second rectifier transformer respectively, voltage transmission after the first rectifier transformer rectification is to the first medium voltage frequency converter, exported by the second outlet board after frequency conversion, voltage transmission after the second rectification variable-frequency device rectification is to the second medium voltage frequency converter, exported by the 3rd outlet board after frequency conversion, first radiator and the second radiator dispel the heat to the first medium voltage frequency converter and the second medium voltage frequency converter respectively, PLC control system controls the first medium voltage frequency converter and the second medium voltage frequency converter respectively, PLC control system is also connected with industrial computer and auxiliary system.

2. a kind of container water-cooled medium-voltage frequency conversion system electric-controlled house according to claim 1, it is characterized in that: described Medium voltage switch or circuit breaker group is arranged on the left end of container house body, first outlet board is arranged on position corresponding with Medium voltage switch or circuit breaker group on room body header board, the first rectifier transformer and the second rectifier transformer is disposed with on the right side of Medium voltage switch or circuit breaker group, the first medium voltage frequency converter and the second outlet board is provided with on the right side of second rectifier transformer, second medium voltage frequency converter and the 3rd outlet board, PLC control system, industrial computer and auxiliary system, first medium voltage frequency converter, second outlet board and PLC to be arranged on after room body on plate, second medium voltage frequency converter, 3rd outlet board, industrial computer and auxiliary system are arranged on room body header board, first radiator and the second radiator are arranged on the right-hand member of container house body, wherein the first radiator plate after room body, second radiator is near room body header board.

3. a kind of container water-cooled medium-voltage frequency conversion system electric-controlled house according to claim 1, is characterized in that: the first described outlet version comprises the input of 10kV power supply, the input of 400VAC power supply and network interface.

4. a kind of container water-cooled medium-voltage frequency conversion system electric-controlled house according to claim 1, it is characterized in that: described PLC control system is stand-by redundancy binary channels PLC system, and it comprises CPU and I/O module, miniature circuit breaker and relay, USP constant current source and terminal.

5. a kind of container water-cooled medium-voltage frequency conversion system electric-controlled house according to claim 1, is characterized in that: described air-conditioning, smoke alarm and Temperature Humidity Sensor are connected with PLC control system respectively.