阅读说明：本技术 一种配电系统远程控制装置及方法 (Remote control device and method for power distribution system ) 是由 李瑞夫 李泽宇 程龙兴 张锦 宋生壮 曹帅 于 2021-08-10 设计创作，主要内容包括：本发明提供一种配电系统远程控制装置及方法。所述装置包括：与初始供电单元相连的直流电源,分别通过主电子开关和从电子开关与直流电源相连且分别用于控制主配电单元和从配电单元的主控模块和从控模块,分别与主电子开关和从电子开关的控制端相连的主通信模块和从通信模块,通过通信总线与主控模块和从控模块进行通信的远程控制单元,与远程控制单元相连的远控通信模块,远控通信模块分别与主通信模块和从通信模块进行数据通信。本发明能够控制主配电单元正常加电工作,从配电单元处于不加电的冷备份状态；当主配电单元发生故障时,能够自动切断主配电单元,并切换为从配电单元工作,实现自动冗余控制。(The invention provides a remote control device and a remote control method for a power distribution system. The device comprises: the system comprises a direct-current power supply connected with an initial power supply unit, a master control module and a slave control module which are respectively connected with the direct-current power supply through a master electronic switch and a slave electronic switch and are respectively used for controlling the master power distribution unit and the slave power distribution unit, a master communication module and a slave communication module which are respectively connected with control ends of the master electronic switch and the slave electronic switch, a remote control unit communicated with the master control module and the slave control module through communication buses, and a remote control communication module connected with the remote control unit, wherein the remote control communication module is respectively in data communication with the master communication module and the slave communication module. The invention can control the normal power-on work of the main power distribution unit, and the slave power distribution unit is in a cold backup state without power-on; when the main power distribution unit breaks down, the main power distribution unit can be automatically cut off and switched to work as a slave power distribution unit, and automatic redundancy control is realized.)

1. A power distribution system remote control apparatus, comprising: the system comprises a direct-current power supply connected with an initial power supply unit, a master control module and a slave control module which are respectively connected with the direct-current power supply through a master electronic switch and a slave electronic switch and are respectively used for controlling the master power distribution unit and the slave power distribution unit, a master communication module and a slave communication module which are respectively connected with control ends of the master electronic switch and the slave electronic switch, a remote control unit communicated with the master control module and the slave control module through communication buses, and a remote control communication module connected with the remote control unit, wherein the remote control communication module is respectively in data communication with the master communication module and the slave communication module.

2. The power distribution system remote control device of claim 1, wherein the remote control communication module is in data communication with the master communication module and the slave communication module via the power supply line of the initial power supply unit.

3. The power distribution system remote control device of claim 1, wherein the DC power source is a DC regulated power source or a DC-DC power source.

4. The electrical distribution system remote control device of claim 1, wherein the master and slave electronic switches are both relays or contactors.

5. The power distribution system remote control device of claim 1, wherein the communication bus is a CAN bus or an ethernet.

6. A method of controlling using the apparatus of claim 1, comprising the steps of:

and power-on control step:

after power is on, the remote control unit sends a starting instruction to the remote control communication module;

the remote control communication module forwards a starting-up instruction to the main communication module;

the main communication module analyzes the command and then sends a control signal to the main electronic switch to switch on the main electronic switch, and the direct-current power supply supplies power to the main control module;

the main control module enables the main power distribution unit to work, collects the working state of the main power distribution unit in real time and sends the working state to the remote control unit through the communication bus;

and a redundancy control step:

the remote control unit judges whether the work of the main power distribution unit is normal or not by monitoring the working state of the main power distribution unit in real time, and sends a switching instruction to the remote control communication module when detecting that the main power distribution unit breaks down;

after receiving the switching instruction, the remote control communication module forwards the switching instruction to the master communication module and the slave communication module;

the main communication module sends a control signal to the main electronic switch after receiving the switching command, so that the main electronic switch is disconnected, and the main power distribution unit stops working when the main communication module is disconnected;

and the slave communication module receives the switching instruction and then sends a control signal to the electronic switch to enable the slave electronic switch to be switched on, the direct-current power supply supplies power to the slave control module, the slave control module enables the slave power distribution unit to work, the working state of the slave power distribution unit is collected in real time, and the working state is sent to the remote control unit through a communication bus.

7. The power distribution system remote control device of claim 6, wherein the remote control communication module is in data communication with the master communication module and the slave communication module via the power supply line of the initial power supply unit.

8. The power distribution system remote control device of claim 6, wherein the DC power source is a DC regulated power source or a DC-DC power source.

9. The electrical distribution system remote control device of claim 6, wherein the master and slave electronic switches are both relays or contactors.

10. The power distribution system remote control device of claim 6, wherein the communication bus is a CAN bus or an Ethernet.

Technical Field

The invention belongs to the technical field of power supply and distribution control, and particularly relates to a remote control device and method for a power distribution system.

Background

With the development of power supply and distribution technologies, the requirements on power supply and distribution reliability are higher and higher in unattended application occasions such as unattended places, unmanned vehicles, unmanned stations and the like. The power supply and distribution single machine is required to have multi-redundancy equipment guarantee, the power supply and distribution single machine is required to reliably respond and safely supply power after receiving a remote power distribution control instruction, high reliability is often required to be continuously supplied with power, and long-time uninterrupted power supply capability is expected to be achieved. In the conventional power distribution control method, in order to guarantee the reliability of power distribution, a mode of hot standby of multiple devices is often adopted, and the reliability of power supply and power distribution is guaranteed through the redundancy of the hot standby devices. The method of hot backup usually needs more equipment to be electrified for a long time, and the single machine of the hot backup can be continuously electrified to reliably ensure the reliability of power distribution control, but cannot ensure the reliability of long-time power supply. The cold backup power distribution scheme adopts a main backup design method and effectively utilizes the superposition of the single-machine reliability of the main backup single machine and the backup single machine through an alternate working mode, thereby obtaining better long-time power distribution reliability.

In conclusion, in the field of unattended remote power supply and distribution, the cold-backup power distribution control unit is adopted, and by designing the remote start control circuit, the remote start and stop control of the cold-backup power distribution control unit can be effectively realized, the effective utilization of the main backup unit is realized, and the reliability of long-time power supply and distribution is improved.

Disclosure of Invention

In order to solve the above problems in the prior art, the present invention provides a remote control device and method for a power distribution system.

In order to achieve the above object, the present invention adopts the following technical solutions.

In a first aspect, the present invention provides a remote control device for a power distribution system, comprising: the system comprises a direct-current power supply connected with an initial power supply unit, a master control module and a slave control module which are respectively connected with the direct-current power supply through a master electronic switch and a slave electronic switch and are respectively used for controlling the master power distribution unit and the slave power distribution unit, a master communication module and a slave communication module which are respectively connected with control ends of the master electronic switch and the slave electronic switch, a remote control unit communicated with the master control module and the slave control module through communication buses, and a remote control communication module connected with the remote control unit, wherein the remote control communication module is respectively in data communication with the master communication module and the slave communication module.

Further, the remote control communication module performs data communication with the master communication module and the slave communication module through the power supply line of the initial power supply unit.

Further, the direct current power supply is a direct current voltage-stabilizing power supply or a DC-DC power supply.

Further, the master electronic switch and the slave electronic switch are both relays or contactors.

Further, the communication bus is a CAN bus or an ethernet.

In a second aspect, the present invention provides a method for remote power distribution control using the apparatus, comprising the steps of:

and power-on control step:

after power is on, the remote control unit sends a starting instruction to the remote control communication module;

the remote control communication module forwards a starting-up instruction to the main communication module;

the main communication module analyzes the command and then sends a control signal to the main electronic switch to switch on the main electronic switch, and the direct-current power supply supplies power to the main control module;

the main control module enables the main power distribution unit to work, collects the working state of the main power distribution unit in real time and sends the working state to the remote control unit through the communication bus;

and a redundancy control step:

the remote control unit judges whether the work of the main power distribution unit is normal or not by monitoring the working state of the main power distribution unit in real time, and sends a switching instruction to the remote control communication module when detecting that the main power distribution unit breaks down;

after receiving the switching instruction, the remote control communication module forwards the switching instruction to the master communication module and the slave communication module;

the main communication module sends a control signal to the main electronic switch after receiving the switching command, so that the main electronic switch is disconnected, and the main power distribution unit stops working when the main communication module is disconnected;

and the slave communication module receives the switching instruction and then sends a control signal to the electronic switch to enable the slave electronic switch to be switched on, the direct-current power supply supplies power to the slave control module, the slave control module enables the slave power distribution unit to work, the working state of the slave power distribution unit is collected in real time, and the working state is sent to the remote control unit through a communication bus.

Further, the remote control communication module performs data communication with the master communication module and the slave communication module through the power supply line of the initial power supply unit.

Further, the direct current power supply is a direct current voltage-stabilizing power supply or a DC-DC power supply.

Further, the master electronic switch and the slave electronic switch are both relays or contactors.

Further, the communication bus is a CAN bus or an ethernet.

Compared with the prior art, the invention has the following beneficial effects.

According to the invention, by arranging the direct-current power supply, the main electronic switch, the slave electronic switch, the main control module, the slave control module, the main communication module, the slave communication module, the main power distribution unit, the slave power distribution unit, the remote control unit and the remote control communication module, the main power distribution unit can be controlled to be powered on normally to work, and the slave power distribution unit is in a cold backup state without being powered on; when the main power distribution unit breaks down, the main power distribution unit can be automatically cut off and switched to work as a slave power distribution unit, and automatic redundancy control is realized.

Drawings

Fig. 1 is a block diagram of a remote control device of a power distribution system according to an embodiment of the present invention.

Fig. 2 is a flowchart of a method for performing remote power distribution control by using the device according to an embodiment of the present invention.

In fig. 1: 1-a master communication module, 2-an initial power supply unit, 3-a slave communication module, 4-a direct current power supply, 5-a master electronic switch, 6-a slave electronic switch, 7-a master control module, 8-a slave control module, 9-a master power distribution unit, 10-a slave power distribution unit, 11-a remote control communication module and 12-a remote control unit.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer and more obvious, the present invention is further described below with reference to the accompanying drawings and the detailed description. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Fig. 1 is a block diagram of a remote control device of a power distribution system according to an embodiment of the present invention, including: the system comprises a direct current power supply 4 connected with an initial power supply unit 2, a master control module 7 and a slave control module 8 which are respectively connected with the direct current power supply 4 through a master electronic switch 5 and a slave electronic switch 6 and are respectively used for controlling a master power distribution unit 9 and a slave power distribution unit 10, a master communication module 1 and a slave communication module 3 which are respectively connected with control ends of the master electronic switch 5 and the slave electronic switch 6, a remote control unit 12 which is communicated with the master control module 7 and the slave control module 8 through communication buses, a remote control communication module 11 connected with the remote control unit 12, and the remote control communication module 11 is respectively in data communication with the master communication module 1 and the slave communication module 3.

The embodiment provides a remote control device for a cold backup single machine of an unattended power supply and distribution system, which is normally operated by a main power distribution unit 9, and a slave power distribution unit 10 is in an unpowered cold backup state. When the master power distribution unit 9 malfunctions, the remote control unit 12 automatically cuts off the slave power distribution unit 9 and operates the slave power distribution unit 10. Since the slave power distribution unit 10 is not powered on at ordinary times, compared with the existing control method of powering on the hot backup, the method has the advantages of low energy consumption, low failure rate and the like.

In this embodiment, the device mainly includes a dc power supply 4, a master electronic switch 5, a slave electronic switch 6, a master control module 7, a slave control module 8, a master communication module 1, a slave communication module 3, a master power distribution unit 9, a slave power distribution unit 10, a remote control unit 12, and a remote control communication module 11, and the connection relationship of the modules is shown in fig. 1. The function and operation of each module will be described separately below.

And the direct current power supply 4 is used for providing direct current voltages required by normal work for the master control module 7, the slave control module 8, the master communication module 1, the slave communication module 3 and the like. The input end of the direct current power supply 4 is connected with the output end of the initial power supply unit 2, and stable direct current voltage is output by converting the voltage output by the initial power supply unit 2. The output of the initial power supply unit 2 can be in various direct current and alternating current systems, and the direct current power supply 4 adopts different circuit structures according to different systems of the initial power supply unit 2.

The main power distribution unit 9 and the slave power distribution unit 10 are used for realizing power distribution control of the electronic equipment. The main power distribution unit 9 is powered on to work at ordinary times, and the slave power distribution unit 10 is not powered on and is used as a backup power distribution unit. When the main power distribution unit 9 fails, the slave power distribution unit 10 replaces the main power distribution unit 9 to supply power to the electronic devices.

The master control module 7 and the slave control module 8 are respectively used for controlling the master power distribution unit 9 and the slave power distribution unit 10 and acquiring the working states of the master power distribution unit 9 and the slave power distribution unit 10 in real time. The master control module 7 and the slave control module 8 are respectively connected with the direct current power supply 4 through the master electronic switch 5 and the slave electronic switch 6, and the on-off control of the power supply of the master control module 7 and the slave control module 8 can be realized through the on-off control of the master electronic switch 5 and the slave electronic switch 6. The master control module 7 and the slave control module 8 are in data communication with the remote control unit 12 through a communication bus, and receive instructions from the remote control unit 12 or transmit operating state data of the master power distribution unit 9 and the slave power distribution unit 10 to the remote control unit 12.

And the master electronic switch 5 and the slave electronic switch 6 are respectively used for controlling the power supply of the master control module 7 and the slave control module 8. The master electronic switch 5 and the slave electronic switch 6 are respectively connected in series in a power supply loop of the direct-current power supply 4, namely the master control module 7 and the slave control module 8, so that the power supply control of the master control module 7 and the slave control module 8 can be realized through the on-off control of the two electronic switches. The control ends of the master electronic switch 5 and the slave electronic switch 6 are respectively connected with the output ends of the master communication module 1 and the slave communication module 3, and the master communication module 1 and the slave communication module 3 output corresponding control signals according to the received instructions from the remote control unit 12 to realize on-off control of the two electronic switches.

The master communication module 1 and the slave communication module 3 are respectively used for communicating with the remote control communication module 11, that is, receiving the instruction of the remote control unit 12 through the remote control communication module 11. The remote control communication module 11 is connected with the remote control unit 12, and both are installed in a control center far away from a power distribution site, and the remote control communication module 11, the master communication module 1 and the slave communication module 3 may adopt a wireless or wired communication mode, and the embodiment does not limit the specific communication mode.

A remote control unit 12, which is a control and data processing center of the device, and coordinates the work of each module by sending various control instructions; the automatic fault diagnosis is realized by monitoring the working states of the main power distribution unit 9 and the slave power distribution unit 10 and processing data. The remote control unit 12 is in data communication with the master control module 7 and the slave control module 8 through a communication bus; and the remote control communication module 11 is used for carrying out data communication with the master communication module 1 and the slave communication module 3.

The device mainly has two control processes: the first is the power-up control process and the second is the redundant control process. These two control procedures are described separately below.

The power-on control process is a normal control process during each power-on, namely, under the control of the remote control unit 12, the main power distribution unit 9 is powered on to supply power to the electronic equipment; the slave power distribution unit 10 is not powered and is in a cold standby state. When the power is on, the remote control unit 12 sends a power-on command to the main communication module 1 through the remote control communication module 11, after the main communication module 1 analyzes the command, the main communication module sends a control signal (such as a high level signal) to the main electronic switch 5 to turn on the main electronic switch 5, the direct current power supply 4 supplies power to the main control module 7 through the main electronic switch 5, and the main control module 7 controls the main power distribution unit 9 to work. After the main power distribution unit 9 works, the main control module 7 acquires the working state of the main power distribution unit 9 in real time and sends the state data to the remote control unit 12 through a communication bus; the remote control unit 12 monitors the operation of the main power distribution unit 9 in real time.

The redundancy control process is that when the main power distribution unit 9 fails, under the control of the remote control unit 12, the switching from the main power distribution unit 9 to the slave power distribution unit 10 is realized, that is, the main power distribution unit 9 is cut off, and the slave power distribution unit 10 supplies power to the electronic equipment. When the main power distribution unit 9 malfunctions, the remote control unit 12 can automatically diagnose the malfunction according to the operating state of the main power distribution unit 9. If a fault is identified, sending an instruction to the master communication module 1 and the slave communication module 3 through the remote control communication module 11, outputting a control signal to disconnect the master electronic switch 5 and switching off the master control module 7 after the master communication module 1 receives the instruction; after receiving the instruction from the communication module 3, the slave electronic switch 6 is switched on by outputting a control signal, the direct current power supply 4 supplies power to the slave control module 8, and the slave control module 8 controls the slave power distribution unit 10 to work. After the slave power distribution unit 10 works, the slave control module 8 collects the working state of the slave power distribution unit 10 in real time and sends the state data to the remote control unit 12 through a communication bus; the remote control unit 12 monitors the operation of the slave power distribution unit 10 in real time.

As an alternative embodiment, the remote control communication module 11 communicates data with the master communication module 1 and the slave communication module 3 via the power supply line of the initial power supply unit 2.

The embodiment provides a technical scheme that the remote control communication module 11 communicates with the master communication module 1 and the slave communication module 3. As described above, the remote control communication module 11 can use both wireless communication and wired communication with the master communication module 1 and the slave communication module 3, and general wired communication generally has the disadvantages of short communication distance, high cost, and the like. For this purpose, the present embodiment uses the power supply line of the initial power supply unit 2 to implement communication between the remote control communication module 11 and the master communication module 1 and the slave communication module 3 by using the power line carrier communication technology. Power line carrier communication (power line carrier communication) is power system communication in which a power transmission line is a transmission medium of a carrier signal. Because the transmission line has very firm bearing structure, so the transmission line is used for transmitting carrier signals when transmitting power frequency current, and is economical and very reliable.

As an alternative embodiment, the DC power supply 4 is a DC voltage regulator or a DC-DC power supply.

The present embodiment provides a technical solution of the dc power supply 4. In the present embodiment, the DC power supply 4 may be a DC voltage regulator or a DC-DC power supply. When the initial power supply unit 2 outputs alternating current, a direct current voltage stabilization source is adopted, and direct current voltage with certain amplitude (such as 5V, 12V and the like) is output by performing voltage reduction, rectification and voltage stabilization on the input alternating current voltage; when the initial power supply unit 2 outputs a direct current, a DC-DC power supply is generally used to convert an input direct current voltage to a desired direct current voltage.

As an alternative embodiment, the master electronic switch 5 and the slave electronic switch 6 are both relays or contactors.

The present embodiment provides the technical solutions of the master electronic switch 5 and the slave electronic switch 6. In the present embodiment, the master electronic switch 5 and the slave electronic switch 6 are relays or contactors. The difference between the relay and the contactor is that the current is different, if the load of the direct current power supply 4 is smaller, the relay with smaller working current can be adopted; if the load of the dc power supply 4 is large, a contactor is selected. In practical applications, a contactor is selected in most cases.

As an alternative embodiment, the communication bus is a CAN bus or an ethernet.

The embodiment provides a technical scheme of a communication bus. The communication bus of this embodiment may be a CAN bus or an ethernet. The advantages and the disadvantages of the two schemes are not obviously different, and which communication mode is specifically selected is determined according to different application scenes.

Fig. 2 is a flowchart of a method for controlling by using the apparatus according to an embodiment of the present invention, where the method includes the following steps:

step 101, power-up control step:

step 1011, after powering up, the remote control unit 12 sends a power-on instruction to the remote control communication module 11;

step 1012, the remote control communication module 11 forwards a power-on instruction to the main communication module 1;

step 1013, the main communication module 1 analyzes the instruction and then sends a control signal to the main electronic switch 5, so that the main electronic switch 5 is turned on, and the direct current power supply 4 supplies power to the main control module 7;

1014, the main control module 7 makes the main power distribution unit 9 work, collects the working state of the main power distribution unit 9 in real time, and sends the working state to the remote control unit 12 through the communication bus;

102, redundancy control:

step 1021, the remote control unit 12 judges whether the work of the main power distribution unit 9 is normal or not by monitoring the working state of the main power distribution unit 9 in real time, and when detecting that the main power distribution unit 9 breaks down, sends a switching instruction to the remote control communication module 11;

step 1022, after receiving the switching instruction, the remote control communication module 11 forwards the switching instruction to the master communication module 1 and the slave communication module 3;

step 1023, after receiving the switching command, the main communication module 1 sends a control signal to the main electronic switch 5 to disconnect the main electronic switch 5, and the main control module 7 is powered off to stop the main power distribution unit 9;

step 1024, after receiving the switching instruction, the slave communication module 3 sends a control signal to the electronic switch to switch on the slave electronic switch 6, the dc power supply 4 supplies power to the slave control module 8, the slave control module 8 operates the slave power distribution unit 10, collects the operating state of the slave power distribution unit 10 in real time, and sends the operating state to the remote control unit 12 through the communication bus.

Compared with the technical solution of the system embodiment shown in fig. 1, the method of this embodiment has similar implementation principle and technical effect, and is not described herein again. The same applies to the following embodiments, which are not further described.

As an alternative embodiment, the remote control communication module 11 communicates data with the master communication module 1 and the slave communication module 3 via the power supply line of the initial power supply unit 2.

As an alternative embodiment, the DC power supply 4 is a DC voltage regulator or a DC-DC power supply.

As an alternative embodiment, the master electronic switch 5 and the slave electronic switch 6 are both relays or contactors.

As an alternative embodiment, the communication bus is a CAN bus or an ethernet.

The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.