WO2019062772A1

WO2019062772A1 - Method and apparatus for automatically switching between mains power and electric generator

Info

Publication number: WO2019062772A1
Application number: PCT/CN2018/107700
Authority: WO
Inventors: 徐波; 万邦睿; 汪建; 黎昱
Original assignee: 中兴通讯股份有限公司
Priority date: 2017-09-26
Filing date: 2018-09-26
Publication date: 2019-04-04
Also published as: CN109560606A

Abstract

A method and apparatus for automatically switching between mains power and an electric generator, relating to the technical field of the intelligent use of electricity. The method comprises the following steps: a general controller sending, when detecting that the current mains power cannot supply power normally, a power supply switching instruction to each line controller (S101); after receiving the power supply switching instruction, each line controller switching a power supply line from a mains power power supply line to an electric generator power supply line, and sending a switching completion message to the general controller (S102); and the general controller starting, according to the received switching completion message, an electric generator for power supply, and transmitting the electric energy generated by the electric generator to each of the line controllers (S103).

Description

Mains and generator automatic switching method and device

Technical field

The present disclosure relates to the field of smart power technologies, and in particular, to a method and device for automatically switching between a power supply and a generator.

Background technique

In Africa or power-poor areas, blackouts are a normal state and may not completely solve the problem of insufficient power supply in a short period of time. As a result, many relatively wealthy households in Africa have their own generators to self-sufficient power generation when power outages occur, and some less affluent households jointly purchase generators to share the electricity generated by the generators.

However, there are, for example, the following deficiencies and limitations. For example, once the utility power is cut off, the user needs to manually switch the line to receive the electric energy generated by the generator. If several users share a generator, they need to manually switch the lines manually, and cannot switch synchronously. The switching process is very It is cumbersome; moreover, if several generators are shared, it is impossible to separate billing. If separate billing is required, additional wiring and meter installation are required; and the existing indoor wiring network cannot be basically used.

Summary of the invention

A method for automatically switching between a mains and a generator according to an embodiment of the present disclosure includes the following steps: the main controller sends a power supply switching instruction to each line controller when detecting that the current mains cannot perform normal power supply; After receiving the power switching instruction, the device switches the power supply line from the mains power supply line to the generator power supply line, and sends a handover complete message to the total controller; and the total controller according to the received The switching completion message starts the generator power supply and transmits the power generated by the generator to the line controllers.

A city-to-generator automatic switching device according to an embodiment of the present disclosure includes: a total controller configured to issue a power switching instruction to each line controller when detecting that the current mains cannot perform normal power supply, and Generating power to the generator according to a handover completion message sent by each line controller, and transmitting power generated by the generator to the line controllers; and a line controller configured to receive the power supply sent by the total controller After the switching instruction, the power supply line is switched from the mains supply line to the generator supply line, and a handover completion message is sent to the overall controller.

An apparatus for automatically switching between a mains and a generator according to an embodiment of the present disclosure includes a processor and a memory, wherein when the processor executes one or more programs stored in the memory, execution is performed as implemented in the present disclosure The method of automatic switching between mains and generators as described in the example.

A computer readable storage medium according to an embodiment of the present disclosure, on which one or more programs are stored, when the one or more programs are executed by one or more processors, such that The method of automatic switching between utility power and generator.

DRAWINGS

1 is a flow chart of a method for automatically switching between a mains and a generator according to an embodiment of the present disclosure;

2 is a schematic diagram of a mains and generator automatic switching device according to an embodiment of the present disclosure;

3 is a schematic block diagram of a general controller provided by an embodiment of the present disclosure;

4 is a schematic block diagram of a line switcher according to an embodiment of the present disclosure;

FIG. 5 is a schematic diagram of switching a utility power to a generator according to an embodiment of the present disclosure; FIG.

6 is a flow chart of switching a commercial power to a generator provided by an embodiment of the present disclosure;

7 is a schematic diagram of switching a generator to a commercial power provided by an embodiment of the present disclosure;

8 is a flow chart of switching a generator to a commercial power provided by an embodiment of the present disclosure;

FIG. 9 is a flow chart of automatic meter reading provided by an embodiment of the present disclosure.

Detailed ways

The preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings.

FIG. 1 is a flowchart of a method for automatically switching between a mains and a generator according to an embodiment of the present disclosure. As shown in FIG. 1, the method for automatically switching between the mains and the generator includes: steps S101-S103.

In step S101, the master controller issues a power supply switching command to each line controller when it is detected that the current mains cannot perform normal power supply.

In step S102, after receiving the power switching instruction, each line controller switches the power supply line from the mains power supply line to the generator power supply line, and sends a handover complete message to the total controller.

In step S103, the overall controller starts the generator power supply according to the received handover completion message, and transmits the power generated by the generator to the line controllers.

In an embodiment, after receiving the power switching instruction, each line controller further includes: after each line controller receives the power switching instruction by using a wireless communication module, switching the meter line from the utility meter line Go to the generator meter line.

In an embodiment, the total controller starts the generator power supply according to the received handover completion message, and includes: the total controller determines, according to the received handover completion message, whether all line controllers are switched. If it is determined that all the line controllers are successfully switched, the total controller starts the generator power supply; if it is determined that all the line controllers are not successfully switched, the total controller issues an alarm indication, and does not start the generator. .

The embodiment of the present disclosure further includes the following steps: when the current controller detects the current city power for normal power supply, stops the generator power supply, and sends a power switch command to each line controller through the wireless communication module; and each line controller passes After receiving the mains switching instruction, the wireless communication module switches the electric meter line from the generator electric meter line to the main electric meter line, switches the power supply line from the generator power supply line to the mains power supply line, and sends a handover completion message to The overall controller.

The embodiment of the present disclosure further includes the following steps: when detecting that the meter reading is required, the total controller sends a meter reading instruction to each line controller through the wireless communication module; each line controller receives the meter reading through the wireless communication module. After the command, the utility meter data for identifying the use of the commercial power and the generator meter data for identifying the use of the generator power are respectively read from the electric meter; and the line controllers read the city through the wireless communication module. The meter data and the generator meter data are sent to the overall controller for storage and display by the overall controller.

2 is a schematic diagram of a mains and generator automatic switching device according to an embodiment of the present disclosure. As shown in FIG. 2, the mains and generator automatic switching device includes: a total controller 201 configured to issue a power switching instruction to each line controller when detecting that the current mains cannot perform normal power supply, and according to a switching completion message sent by each line controller, starting generator power supply, and transmitting power generated by the generator to the line controllers; the line controller 202 is configured to receive the power switching sent by the total controller After the command, the power supply line is switched from the mains supply line to the generator supply line, and a handover completion message is sent to the overall controller.

In one embodiment, the line controller 202 is further configured to switch the meter line from the utility meter line to the generator meter line upon receipt of the power switching command.

In an embodiment, the total controller 201 is further configured to determine, according to the received handover complete message, whether all the line controllers are successfully switched, wherein if all the line controllers are successfully switched, the power generation is started. The machine is powered, and if it is judged that all the line controllers are not successfully switched, an alarm indication is issued and the generator is not started.

In an embodiment, the total controller 201 is further configured to stop the generator power supply when the current city power is detected for normal power supply, and issue a power switch command to each line controller through the wireless communication module, and detect When a meter reading is required, a meter reading instruction is issued to each line controller through the wireless communication module;

In one embodiment, the line controller 202 is further configured to switch the meter line from the generator meter line to the mains meter line after receiving the mains switching command, and switch the power line from the generator power line to the generator line. The utility power supply line sends a handover completion message to the total controller, and after receiving the meter reading instruction, reads the utility meter data for identifying the use of the utility power and the identification for the identification from the electricity meter The generator meter data of the generator power is used, and the read utility meter data and the generator meter data are sent to the overall controller for storage and display by the overall controller.

3 is a schematic block diagram of a general controller provided by an embodiment of the present disclosure. As shown in FIG. 3, the total controller includes: a mains monitoring module, a single chip module, a wireless communication module, a generator control module, a power module, a meter reading module, and a display module.

The utility power monitoring module realizes monitoring of power-on and power-off of the utility power. When monitoring the power-off and power-off of the utility power, it sends a message to the single-chip microcomputer module to trigger a related event.

The MCU module is the "brain" of the overall controller, which is responsible for coordinating the operation of the various functional modules of the overall controller. In other words, the MCU module is the control center of the entire controller, which controls the functions of each module and schedules the functions of each module.

The wireless communication module is responsible for two-way communication with the line controller, transmitting control commands, receiving control results, transmitting meter reading commands, and receiving meter reading results. The communication may be short-range wireless communication, such as radio frequency (RF) communication, wireless fidelity (WiFi) communication, and Bluetooth communication.

The generator control module is configured to receive a generator start-stop command sent by the single-chip module when the utility power and the power generation need to be switched, and control the start and stop of the generator according to the start-stop command. That is, the generator control module performs starting and stopping of the generator according to the monitoring result of the utility power monitoring module.

The power module is responsible for temporarily supplying power to the entire controller during a utility power outage.

The meter reading module is responsible for issuing a meter reading instruction to the registered line controller in a timely or real time, and receiving the meter reading result returned by the line controller and displaying the result.

The display module can be at the overall controller, and the display module can display the mains and power generation status. For example, the mains and power generation of the last three months can be viewed through the display module. In other words, the display module can be used to view, for example, the mains or power generation situation, the utility power, and the power generation power generation, or the like, or the line controller or the like can be registered through the interface of the display module.

4 is a schematic block diagram of a line switcher according to an embodiment of the present disclosure. The line switcher can be configured to perform line switching in accordance with an instruction of the overall controller or each line controller. As shown in FIG. 4, the line switcher includes: a single chip module, a wireless communication module, a line switching module, a power module, a local communication module, and a manual control module.

The MCU module is the "brain" of the line controller, which is responsible for coordinating the operation of the various functional modules of the line controller.

The wireless communication module is responsible for two-way communication with the wireless communication module of the overall controller, receiving an instruction of the overall controller and returning the result of the instruction. The communication may be short-range wireless communication, such as RF communication, WiFi communication, Bluetooth communication, and the like. After power-on, the wireless communication module will automatically establish and maintain a connection with the wireless communication module of the master control module.

The line switching module is responsible for realizing switching between the mains line and the generator line, and can also realize forward and reverse switching of the access line, which is the key to realize power generation billing and fully utilize the original line. . The mains line may include a mains supply line and a mains meter line, and the generator line may include a generator supply line and a generator meter line.

The power module is responsible for temporarily supplying power to the entire line controller during a utility power outage.

The local communication module communicates with the electric meter to perform reading of electric energy data such as mains power and power generation, and the reading can be performed by RS485, ZigBee, M_Bus, or the like.

The manual control module is configured to perform manual line switching by the manual control module when communication fails. That is to say, in the case of preventing automatic control failure, the manual control module can manually switch the line to ensure normal power supply.

Embodiments of the present disclosure provide device installation and configuration, which may include the following three steps.

In step 1, all devices are installed, including a master controller and N line controllers.

In step 2, configure the installed device. A master controller can be configured to correspond to multiple line controllers. At this step, the installed N line controllers can be registered on the display module on the overall controller, and a scheduled meter reading task needs to be set.

In step 3, when the main controller and the line controller are powered on, the total controller automatically performs wireless communication networking.

The line switching includes switching the mains to the generator as shown in Figure 5 and switching the generator to the mains as shown in Figure 7. The specific switching control flow is described in the flowchart of the switch from the commercial power to the generator shown in FIG. 6 and the flow chart in which the generator is switched to the commercial power as shown in FIG.

6 is a flow chart of switching the utility power to the generator provided by the embodiment of the present disclosure. As shown in FIG. 6, when the utility power monitoring module detects the power failure of the utility power, the total controller will automatically issue an instruction to all the line controllers. The line is switched to generate electricity, and the line that enters the meter is adjusted; when all the lines are adjusted, the generator is started and the line is powered. The process includes the following steps.

First, at one step, the master controller monitors whether the utility power is out of power, and when the utility power outage is detected, proceeds to the next step.

Next, at one step, after the utility power is cut off, the master controller issues a line switching command to the registered line controller, which may include generator line switching and meter line switching.

Next, at one step, the line controller receives the utility to generator line switching command, initiates the line switching function, and automatically detects the switching result. If the switch fails, a limited number of re-switches can be performed. After the handover is completed, the line controller returns the handover result to the overall controller.

Finally, at one step, after receiving the line switching result from each line controller, the controller determines whether all the line controllers have successfully switched. If the switch is successful, the master control sends a start engine command to start the generator. If the line controller fails to switch, an alarm is issued and the engine is not automatically started.

In summary, when the mains monitoring module of the main controller detects the mains power failure, the total controller MCU immediately sends the command to switch the mains to the generator through the wireless communication module of the main controller; After the controller's wireless communication module receives the command to switch the utility power to the generator, the line controller's MCU immediately switches the line connected to the meter through the line switching module, and then switches the mains line to the generator line. After the successful handover, the line controller's wireless communication module reports the successful result of the line switching to the general controller; after the total control receives the registered line controller switching success information, the generator control module of the total controller starts the generator. Power is supplied.

FIG. 8 is a flow chart of switching a generator to a commercial power provided by an embodiment of the present disclosure. As shown in Figure 8, when the mains monitoring module detects the mains recovery, the generator will automatically stop the generator and issue a line switching command to all line controllers for switching. The switching can be switched to the meter first. The line, then switch the line to the mains line. The process can include the following steps.

First, at one step, the general controller monitors whether the mains supply is powered. When the mains supply is monitored, the next step is entered.

Next, at one step, after the mains supply is normally powered, the master controller sends a stop generator command to stop the generator.

Next, at one step, when the generator is stopped, the master controller issues a line switch command to the registered line controller for switching, which may include generator line switching and meter line switching.

Next, at a step 804, when the line controller receives the switching command from the main controller to generate power to the mains line, the line switching function is activated and the switching result is automatically monitored. If the switch fails, the specified number of re-switches can be performed. After the switch is completed, the switch result is returned to the overall controller.

Finally, at a step 805, the overall controller receives the line switch results from the respective line controllers. If the line controller fails to switch, the controller will give an alarm.

In summary, when the mains monitoring module of the main controller detects the mains recovery, the generator control module of the total controller stops the generator to generate electricity, and then the microcontroller of the total controller immediately registers with the wireless communication module of the total controller. The line controller issues a command to switch the generator to the mains; after the wireless communication module of the line controller receives the command to switch the generator to the mains, the MCU module of the line controller immediately accesses the meter through the line switching module. The line is switched, and then the generator line is switched to the mains line. After the handover is successful, the line communication success result is reported to the total controller through the wireless communication module of the line controller, and the status is recorded by the overall controller.

FIG. 9 is a flow chart of automatic meter reading provided by an embodiment of the present disclosure. As shown in Figure 9, the process includes the following steps.

First, at one step, the master controller monitors for new automatic meter reading tasks, and if so, initiates automatic meter reading and proceeds to the next step.

Next, at one step, the master controller sends a meter reading instruction to the registered line controller.

Next, at one step, the line controller receives the meter reading instruction of the total controller, starts the meter reading process, sends a meter reading command to the respective local communication module, and obtains the return result of the meter. If the meter reading fails, the meter reading for the specified number of times is retried. If the number of times fails after the specified number of times, the meter reading failure information is returned. If the meter reading is successful, the correct data is returned to the master controller.

Finally, at one step, after receiving the meter reading result of each line controller, the total controller records the result of each line controller copying and alarms the line controller that failed to read the meter.

In summary, when the timing of the total controller or the real-time meter reading task is started, the wireless communication module of the total controller issues a meter reading command to the line controller, and the line controller wireless communication module receives the meter reading command, and is controlled by the line. The MCU module of the device communicates with the electric meter through the local communication module to read the electric meter data; when the meter reading is successful, the electric power data is uploaded to the general controller through the wireless communication module of the line controller, and the data storage and data display are performed by the total controller.

In summary, the main controller is equipped with a main wireless communication module, and the line controller is equipped with a sub-wireless control module. When the equipment is initially installed, the line controller needs to be registered through the display control module of the main controller. The main control module performs network control according to the registered line controller when performing control. When the mains and power generation need to be switched, the general controller issues an instruction to the line controller, and the line controller performs the relevant operations when receiving the total controller command. All operations are performed automatically without the need for manual intervention by the master controller and line controller. In the case where the user adds an uninterruptible power supply (Uninterruptible Power System/Uninterruptible Power Supply, UPS) before the load, the user can perform the senseless line switching.

Embodiments of the present disclosure also provide an apparatus for automatically switching between a mains and a generator, including a processor and a memory, wherein the processor executes one or more programs stored in the memory such that an embodiment such as the present disclosure is executed The method for automatically switching between the mains and the generator.

The embodiment of the present disclosure further provides a computer readable storage medium having stored thereon one or more programs, when the one or more programs are executed by one or more processors, such that execution is performed as described in the embodiments of the present disclosure. The mains and generator automatic switching method.

According to the solution provided by the embodiment of the present disclosure, the following beneficial effects can be obtained. For example, 1) a scheme according to an embodiment of the present disclosure is provided with a display module, which is convenient for maintenance by a user, and can also view the user's power and power generation in real time; 2) automatic power supply monitoring can be realized, and once the utility power is found to be powered off, The follow-up automatic process can be initiated; 3) the start-stop control of the generator and all the line switching are fully automated, and the mains and power generation are automatically switched without sensing, without manual intervention, which improves the use efficiency; 4) using short-range wireless communication technology, It is possible to eliminate the need for wired deployment of the control circuit, thereby minimizing the construction difficulty, and being compatible with all the lines and equipment of the existing network, and the transformation cost is low; 5) without using additional metering equipment, the existing smart meter can be used for the utility power and The power generation is separately metered, so that the power generation can be charged by the household; 6) The total controller performs synchronous control of the line control device by wireless, and the installation is simple, no additional wiring is required, and the construction is convenient and the cost is low.

Although the present disclosure has been described in detail above, the present disclosure is not limited thereto, and various modifications may be made by those skilled in the art in accordance with the principles of the present disclosure. Therefore, modifications made in accordance with the principles of the present disclosure are to be understood as falling within the scope of the present disclosure.

Claims

A method for automatically switching between a mains and a generator includes the following steps:

When the total controller detects that the current mains cannot perform normal power supply, it sends a power switching instruction to each line controller;

After receiving the power switching instruction, each line controller switches the power supply line from the utility power supply line to the generator power supply line, and sends a handover completion message to the total controller;

The master controller starts the generator power supply according to the received handover completion message, and transmits the power generated by the generator to the line controllers.
The method according to claim 1, after the step of receiving the power switching instruction by the line controllers, the method further includes the following steps:

After receiving the power switching instruction by the wireless communication module, each line controller switches the meter line from the utility meter line to the generator meter line.
The method according to claim 2, wherein the step of starting the power supply of the generator according to the received handover completion message by the overall controller comprises the following steps:

The master controller determines, according to the received handover complete message, whether all line controllers are successfully switched, wherein

If it is determined that all line controllers are successfully switched, the total controller starts the generator power supply, and

If it is determined that all of the line controllers are not successfully switched, the total controller issues an alarm indication and does not start the generator.
The method of claim 1 further comprising the steps of:

When the total controller detects the current city power for normal power supply, the generator power supply is stopped, and a power switch command is issued to each line controller through the wireless communication module;

After receiving the mains switching instruction through the wireless communication module, each line controller switches the meter line from the generator meter line to the main meter line, and switches the power line from the generator power line to the mains line, and A handover complete message is sent to the overall controller.
The method of claim 1 further comprising the steps of:

The master controller sends a meter reading instruction to each line controller through the wireless communication module when detecting that meter reading is required;

After receiving the meter reading instruction by the wireless communication module, each line controller reads, from the meter, the utility meter data for identifying the utility power usage and the generator meter data for identifying the power consumption of the generator;

Each line controller transmits the read utility meter data and generator meter data to the overall controller through the wireless communication module for the general controller to store and display.
An automatic switching device for utility power and generator, comprising:

The total controller is configured to issue a power supply switching instruction to each line controller when detecting that the current utility power cannot be normally powered, and start the generator power supply according to the switching completion message sent by each line controller, and start the generator The emitted electrical energy is delivered to the line controllers;

The line controller is configured to, after receiving the power switching instruction sent by the total controller, switch the power supply line from the mains power supply line to the generator power supply line, and send a handover complete message to the total controller.
The apparatus of claim 6, the line controller further configured to switch the meter line from the utility meter line to the generator meter line after receiving the power switching command.
The apparatus according to claim 7, wherein the total controller is configured to: according to the received handover complete message, determine whether all line controllers are successfully switched, wherein if it is determined that all line controllers are successfully switched, then The generator is powered on, and if it is determined that all of the line controllers have not been successfully switched, an alarm indication is issued and the generator is not started.
The apparatus according to claim 6, wherein the total controller is further configured to stop the power supply of the generator when the current city power is detected for normal power supply, and issue a power-off switching instruction to each line controller through the wireless communication module, and When it is detected that the meter reading is required, the meter reading instruction is issued to each line controller through the wireless communication module.
The device according to claim 9, wherein the line controller is further configured to switch the meter line from the generator meter line to the mains meter line after receiving the mains switching command, and to supply the power line from the generator power supply line. Switching to the mains power supply line, and transmitting a handover completion message to the total controller, and after receiving the meter reading instruction, reading the utility meter data for identifying the use of the municipal power source and using the meter separately The generator meter data identifying the generator power is used, and the read utility meter data and the generator meter data are sent to the overall controller for storage and display by the overall controller.
An automatic switching device for a mains and a generator, comprising a processor and a memory, wherein

The processor executes one or more programs stored in the memory such that the method of automatically switching between the mains and the generator according to any one of claims 1 to 5 is performed.
A computer readable storage medium having stored thereon one or more programs, the one or more programs being executed by one or more processors, such that performing the method of any one of claims 1 to 5 Automatic switching method between mains and generators.