CN117424286B

CN117424286B - Grid-connected power generation method and system based on elevator feed and computer equipment

Info

Publication number: CN117424286B
Application number: CN202311744984.XA
Authority: CN
Inventors: 余忠东; 卢曦; 高奇; 贾国东; 胥文明; 陈俊
Original assignee: Xizi Lift Co ltd
Current assignee: Xizi Lift Co ltd
Priority date: 2023-12-19
Filing date: 2023-12-19
Publication date: 2024-04-16
Anticipated expiration: 2043-12-19
Also published as: CN117424286A

Abstract

The application relates to a grid-connected power generation method and system based on elevator feeding and computer equipment. The method comprises the following steps: collecting mains supply parameters, and determining whether a mains supply abnormality exists according to the mains supply parameters; if not, determining the running state of the elevator according to the running instruction of the elevator; if the elevator running state is the working state, the energy scheduling device and/or the commercial power module are/is used for supplying power to the elevator equipment, the electric energy fed back during the elevator running is obtained, and the energy storage equipment in the energy scheduling device is charged by adopting the electric energy fed back during the elevator running; if the elevator running state is an idle state, determining whether the determined time of the elevator running state is the allowable discharge time or not; if yes, the elevator frequency converter is controlled by the energy scheduling device to carry out grid-connected discharging on the commercial power module. According to the method, grid-connected discharging can be carried out on the commercial power module without adding extra inverter equipment, so that grid-connected power generation of low-power-consumption elevator feed is realized, and the utilization efficiency of electric energy is improved.

Description

Grid-connected power generation method and system based on elevator feed and computer equipment

Technical Field

The application relates to the technical field of grid-connected power generation, in particular to a grid-connected power generation method, system and computer equipment based on elevator feed.

Background

The current elevator power saving method is mostly that when the elevator generates power, the electric energy of a direct current bus is directly converted into the electric energy which can be connected with a mains supply module in a grid mode through an inverter, and the electric energy is transmitted to a mains supply module power grid. Or an energy storage device and a DC/DC conversion device are added between the inverter and the DC bus, energy is stored in the energy storage device, and electric energy in the battery is released when the energy storage device needs to be used. Or when the elevator generates electricity, the electric energy of the direct current bus is directly stored in the energy storage device through the DC/DC conversion device, the direct current bus is not connected with the mains supply module in a grid mode, the electric energy is released to the direct current bus of the elevator when the elevator consumes electricity, and the direct current bus and the mains supply module together provide electric energy for the elevator or independently provide electric energy for the elevator.

In the existing elevator electricity-saving method, electric energy is always fed back to a power grid directly, direct-current transformation and inversion are needed to recover elevator feedback electric energy to the greatest extent, and therefore an inversion device and a transformation device are needed to be arranged in the needed electric energy feedback device, so that the electric energy feedback device has larger power, and the elevator cannot be supplied with electricity during elevator power consumption and power failure emergency.

For the energy-saving device which is not connected with the mains supply module in a grid mode, a set of inversion device and a set of transformation device are saved, but if the elevator is in a power generation state for a long time, if the elevator is required to recover the electric energy to the maximum extent, the participation of the large-capacity energy storage equipment is needed, and when the elevator is not in a power consumption state, the electric quantity stored by the energy storage equipment cannot be timely and fully utilized. Therefore, how to realize the grid-connected power generation of the elevator feed with low power consumption, improve the intelligent level of the elevator power supply, and improve the utilization efficiency of electric energy at the same time is a problem to be solved.

Disclosure of Invention

In view of the foregoing, it is necessary to provide an elevator feed-based grid-connected power generation method, system and computer device capable of realizing low-power consumption elevator feed-connected power generation, improving the level of intellectualization of elevator feed, and improving the utilization efficiency of electric energy.

In a first aspect, the present application provides a grid-connected power generation method based on elevator feeding, the method is implemented by a grid-connected power generation system based on elevator feeding, and the method includes:

collecting mains supply parameters, and determining whether a mains supply abnormality exists according to the mains supply parameters; the mains parameters comprise mains phase sequence, mains phase angle, mains voltage and mains frequency;

if not, determining the running state of the elevator according to the running instruction of the elevator;

if the elevator running state is the working state, supplying power to the elevator equipment through an energy scheduling device and/or a mains supply module, acquiring electric energy fed back when the elevator runs, and charging energy storage equipment in the energy scheduling device by adopting the electric energy fed back when the elevator runs;

if the elevator running state is an idle state, determining whether the determined time of the elevator running state is the allowable discharge time or not;

If yes, the elevator frequency converter is controlled by the energy scheduling device to carry out grid-connected discharge on the commercial power module.

In one embodiment, the energy scheduling device controls the elevator frequency converter to perform grid-connected discharge on the commercial power module, and the method comprises the following steps:

determining whether the residual electric quantity of the energy storage equipment in the energy scheduling device is larger than a set discharge value;

if yes, controlling an elevator frequency converter to perform grid-connected discharge on a commercial power module through the energy scheduling device, and detecting the post-discharge electric quantity of the energy storage equipment in real time in the grid-connected discharge process;

and if the electric quantity after discharging is smaller than or equal to the target electric quantity value, stopping grid-connected discharging of the commercial power module.

In one embodiment, if yes, controlling, by the energy scheduling device, the elevator frequency converter to perform grid-connected discharging on the mains supply module, including:

if the residual electric quantity of the energy storage equipment in the energy scheduling device is larger than a set discharge value, determining a target voltage through a mains supply parameter, and controlling a voltage converter to output the target voltage through an equipment control system of the energy scheduling device;

executing an inversion grid-connected instruction through an elevator frequency converter, and determining inversion output electric energy;

And filtering the inversion output electric energy based on the target voltage to determine grid-connected electric energy, and controlling an elevator frequency converter to perform grid-connected discharge on a commercial power module through the energy scheduling device based on the grid-connected electric energy.

In one embodiment, after collecting the mains supply parameter and determining whether there is a mains supply abnormality according to the mains supply parameter, the method further includes:

if yes, and detecting that passengers exist in the elevator car, executing an in-car instruction, controlling energy storage equipment to supply power to the elevator by the energy scheduling device, and selecting a subsequent target power supply scheme from candidate power supply schemes according to power supply time after determining that the passengers leave the elevator car;

if the target power supply scheme is that the elevator supplies power preferentially, determining whether the residual electric quantity of the energy storage equipment in the energy scheduling device is larger than an electric quantity threshold value;

if yes, the energy storage device is controlled by the energy scheduling device to provide operation electric energy for the elevator, and the energy storage device in the energy scheduling device is charged by adopting the electric energy fed back when the elevator operates.

In one embodiment, if yes, and a passenger is detected to exist in the elevator car, executing an instruction in the car, controlling the energy storage device to supply power to the elevator by the energy scheduling device, and after determining that the passenger leaves the elevator car, selecting a subsequent target power supply scheme from candidate power supply schemes according to the power supply time, further comprising:

If the target power supply scheme is that the household appliances supply power preferentially, determining whether the residual electric quantity of the energy storage equipment in the energy scheduling device is smaller than an electric quantity early warning value or not;

if not, the energy scheduling device provides electric energy for the household appliances, and the elevator control system controls the elevator frequency converter to provide electric energy for the household appliances.

In one embodiment, if the target power supply scheme is to supply power to the domestic appliance preferentially, determining whether the remaining power of the energy storage device of the energy scheduling device is smaller than the power early-warning value further includes:

if yes, determining electric quantity alarm information according to the residual electric quantity of the energy storage equipment, and determining whether the residual electric quantity is lower than a power supply stopping value or not;

if not, providing electric energy for the household appliances through the energy scheduling device, and controlling an elevator frequency converter to provide electric energy for the household appliances through an elevator control system;

if yes, stopping supplying the electric energy to the household appliances.

In one of the embodiments, after determining that the passenger leaves the elevator car, selecting a subsequent target power supply scheme from the candidate power supply schemes according to the power supply time comprises:

determining whether a passenger leaves the elevator car through sensing information acquired by sensing equipment in the elevator car;

If yes, acquiring power supply time, and selecting a subsequent target power supply scheme from the candidate power supply schemes according to the power supply time and the association relation between the candidate time and the candidate power supply schemes.

In a second aspect, the present application further provides an elevator feed-based grid-connected power generation system, where the system is configured to implement an elevator feed-based grid-connected power generation method, and the elevator feed-based grid-connected power generation system includes: the system comprises a mains supply module, an energy scheduling device and elevator equipment;

the commercial power module is used for supplying power to the elevator equipment;

the energy scheduling device is used for collecting the mains supply parameters through the sample collecting equipment and determining whether the abnormal phenomenon of the mains supply exists according to the mains supply parameters; the mains parameters comprise mains phase sequence, mains phase angle, mains voltage and mains frequency;

the elevator equipment is used for determining an elevator operation instruction through an elevator control system when the energy scheduling device determines that no commercial power abnormal phenomenon exists, determining an elevator operation state according to the elevator operation instruction, acquiring electric energy provided by the energy scheduling device and/or a commercial power module if the elevator operation state is a working state, and simultaneously feeding back the electric energy generated during elevator operation to the energy scheduling device;

The energy scheduling device is also used for acquiring the electric energy fed back during elevator operation and charging energy storage equipment in the energy scheduling device by adopting the electric energy fed back during elevator operation;

the energy scheduling device is also used for controlling the elevator frequency converter in the elevator equipment to carry out grid-connected discharge on the commercial power module through the energy scheduling control system in the energy scheduling device when the elevator running state is in an idle state and the determined time of the elevator running state is the allowable discharge time.

In a third aspect, the present application also provides a computer device comprising a memory and a processor, the memory storing a computer program, the processor implementing the following steps when executing the computer program:

In a fourth aspect, the present application also provides a computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of:

According to the elevator feed-based grid-connected power generation method, system and computer equipment, the mains supply parameters are collected, and whether the abnormal phenomenon of the mains supply exists is determined according to the mains supply parameters; if not, determining the running state of the elevator according to the running instruction of the elevator; if the elevator running state is the working state, the energy scheduling device and the commercial power module supply power to the elevator equipment, the electric energy fed back during the elevator running is obtained, and the energy storage equipment in the energy scheduling device is charged by adopting the electric energy fed back during the elevator running; if the elevator running state is an idle state, determining whether the determined time of the elevator running state is the allowable discharge time or not; if yes, the energy scheduling device controls the elevator frequency converter to convert direct current output by the energy storage device into power frequency electricity to carry out grid-connected discharging on the commercial power module. The method solves the problems that when grid-connected discharging is carried out on the commercial power module based on the electric energy fed back by the operation of the elevator, electric energy feedback equipment comprising a high-power inverter and a voltage transformation device is needed, so that the power required by the grid-connected power generation method for realizing the feeding of the elevator is high, grid-connected discharging cannot be carried out on the commercial power module according to the operation condition and the operation time of the elevator, and the utilization efficiency of the electric energy is low. The grid connection is completed by adopting the middle inversion part of the frequency converter of the elevator equipment, the energy storage equipment in the energy scheduling device can be charged according to the electric energy fed back when the elevator operates, the electric energy of the energy storage equipment is timely released, grid connection discharging can be performed on the mains supply module without additionally adding inversion equipment, grid connection power generation of low-power-consumption elevator feed is realized, the intelligent level of elevator power supply is improved, and meanwhile, the utilization efficiency of the electric energy is improved.

Drawings

Fig. 1 is an application environment diagram of a grid-connected power generation method based on elevator feeding in one embodiment;

FIG. 2 is an example diagram of an elevator feed-based grid-tie power generation system in one embodiment;

fig. 3 is a schematic flow diagram of a grid-connected power generation method based on elevator feeding in one embodiment;

fig. 4 is a schematic flow chart of a grid-connected power generation method based on elevator feeding in another embodiment;

fig. 5 is a schematic flow chart of a grid-connected power generation method based on elevator feeding in another embodiment;

fig. 6 is a schematic flow chart of a grid-connected power generation method based on elevator feeding in another embodiment;

fig. 7 is an internal structural diagram of a computer device in one embodiment.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

The grid-connected power generation method based on elevator feed can be applied to an application environment shown in fig. 1. Wherein the terminal 102 communicates with the server 104 via a network. The data storage system may store data that the server 104 needs to process. The data storage system may be integrated on the server 104 or may be located on a cloud or other network server. The server 104 collects the mains supply parameters and determines whether a mains supply abnormality exists according to the mains supply parameters; the mains parameters comprise mains phase sequence, mains phase angle, mains voltage and mains frequency; if not, determining the running state of the elevator according to the running instruction of the elevator; if the elevator running state is the working state, acquiring the electric energy fed back by the elevator during running, and charging energy storage equipment in the energy scheduling device by adopting the electric energy fed back by the elevator during running; if the elevator running state is an idle state, determining whether the determined time of the elevator running state is the allowable discharge time or not; if yes, the elevator frequency converter is controlled by the energy scheduling device to carry out grid-connected discharging on the commercial power module. The terminal 102 transmits power supply conditions to domestic appliances and elevator equipment in grid-connected discharge to the server 104 through a communication network. The terminal 102 may be, but not limited to, various personal computers, notebook computers, smart phones, tablet computers, internet of things devices, and portable wearable devices, where the internet of things devices may be smart speakers, smart televisions, smart air conditioners, smart vehicle devices, and the like. The portable wearable device may be a smart watch, smart bracelet, headset, or the like. The server 104 may be implemented as a stand-alone server or as a server cluster of multiple servers.

In one embodiment, there is provided an elevator feed-based grid-connected power generation system for implementing an elevator feed-based grid-connected power generation method, the elevator feed-based grid-connected power generation system including: the system comprises a mains supply module, an energy scheduling device and elevator equipment;

the elevator equipment is used for determining an elevator operation instruction through the elevator control system when the energy scheduling device determines that the abnormal phenomenon of the commercial power does not exist, determining an elevator operation state according to the elevator operation instruction, acquiring electric energy provided by the energy scheduling device and/or the commercial power module if the elevator operation state is a working state, and simultaneously feeding back the electric energy generated during elevator operation to the energy scheduling device;

the energy scheduling device is also used for acquiring the electric energy fed back during the operation of the elevator and charging energy storage equipment in the energy scheduling device by adopting the electric energy fed back during the operation of the elevator;

the energy scheduling device is also used for controlling an elevator frequency converter in the elevator equipment to perform grid-connected discharge on the commercial power module through an energy scheduling control system in the energy scheduling device when the elevator running state is in an idle state and the determined time of the elevator running state is the allowable discharge time.

As illustrated in fig. 2, the utility power module 1 refers to a place where the elevator installation 4 is supplied with electric energy by a national power grid or other normal power supply. The household electrical appliance 2 refers to electrical equipment with the power frequency and voltage consistent with those of the mains supply module 1. The energy scheduling device 3 is a device for recycling electric energy fed back by the elevator equipment 4 and recycling electric energy such as solar energy, wind energy and the like, wherein the electric energy input from the outside such as solar energy, wind energy and the like is not necessary, but the grid-connected power generation system supports the input of the external energy, and the electric energy can be further processed, stored or grid-connected, and can be output to the domestic electric appliance 2 for use when needed during grid connection. The elevator installation 4 refers to a transport installation for vertically transporting pedestrians or goods, which serves a defined floor building, the vertical elevator having a car which runs between at least two vertical or inclined rigid rails of less than 15 ° for the passage of passengers in and out or for the loading and unloading of goods, the inverter part of the frequency conversion also serving as a grid connection for electrical energy. The solar module 5 may be a device for converting solar energy into electric energy, or may be a device for converting solar energy, wind energy, tidal energy, heat energy, and other energy into electric energy. The K1 switch 39, the K2 switch 30, the K3 switch 310, the K4 switch 311 and the K5 switch 44 are all contactor switches, and the K1 switch 39 is used for disconnecting the rectifying module 411 from the mains module 1 and feeding back the physical connection of the electric energy; the K2 switch 30 is used to disconnect the elevator installation 4 from other components physically; the K3 switch 310 is used for disconnecting the civil electrical apparatus 2 from other components physically; the K4 switch 311 is used for disconnecting the filter module 312 from other components and disconnecting the grid connection of the mains module 1; the K5 switch 44 is used to disconnect the hoisting machine 40 of the elevator apparatus 4 from the drive. The unidirectional DC/DC converter 31 is used to further convert the electrical energy converted from solar energy and wind energy into electrical energy that can be utilized by the elevator installation 4 and the inverter module 412 in the elevator installation. The display 32 refers to a human-machine interface for reading and writing data. The energy scheduling control system 33 is a logic processing module for collecting various operation data and performing certain logic processing to issue instructions; and also for data interaction with other systems including elevator control system 42, energy dispatch control system 33 may be a single-chip device or programmable logic controller PLC. The energy storage device management system 34 is configured to monitor the device status of the energy storage device 38 to prevent overcharging and overdischarging of the energy storage device 38. The sample collection device 35 is used for collecting the mains parameter of the mains module 1 and detecting whether the mains parameter is abnormal. The unidirectional DC/AC converter 36 refers to a device for supplying power to the non-driving part of the elevator installation 4, which power is approximately 1-2KW, when the elevator installation 4 is not supplied at all with the mains module 1. The bidirectional DC/DC converter 37 is a device for transferring electric energy between the energy storage device 38 and the bus to which the elevator apparatus 4 is connected, and the bidirectional DC/DC converter 37 can regulate an output voltage value and output the voltage according to a power supply demand. The energy storage device 38 is a device having energy storage and release functions. The filtering module 312 refers to a series of pulse signals with pulse width and interval time controlled according to the required ac frequency, which are output by the inverter when the power is connected. The filtering module 312 can smooth the pulse signal output by the inverting module 412 to make it more similar to the sine waveform of the mains module 1, so as to avoid high frequency noise. The traction machine 40 is a device for driving the elevator apparatus 4 to vertically operate, and the traction machine 40 consumes energy when actively operating and generates electric energy when passively operating. The elevator inverter 41 is a device for driving the traction machine 40 and controlling the running speed of the traction machine 40, and the inverter portion of the elevator inverter 41 may also serve as a conversion device for inverting direct current into power frequency electricity. The elevator control system 42 is a logic control module for acquiring the operating data of the elevator installation 4 and can also interact with the energy dispatching control system 33. The non-drive power supply system 43 refers to other power consumption than the power consumption for driving the elevator apparatus 4, and includes power consumption for an elevator control system, power consumption for elevator illumination, and the like. The inverter module 412 is a power component for executing the instruction of the frequency conversion control module 413, and can convert the direct current into the alternating current with the target frequency; the variable frequency control module 413 may be used to control the on-off of IGBTs (insulated gate bipolar transistors) in the inverter module 412 and to control the frequency of the inverter output.

In the grid-connected power generation system based on elevator feeding, the commercial power module 1 is connected with the elevator equipment 4 and is used for providing the elevator equipment 4 with electric energy required by elevator operation; the elevator equipment 4 is connected with the energy scheduling device 3 and is used for feeding electric energy generated in the elevator operation process back to the energy scheduling device 3; the energy scheduling device 3 is connected with the mains supply module 1, and is used for acquiring the mains supply parameters of the mains supply module 1 and providing the elevator equipment 4 with electric energy required by elevator operation when the energy scheduling device 3, the elevator equipment 4 and the mains supply module 1 are connected in a grid.

Further, the civil electric appliance 2 in the grid-connected power generation system based on elevator feeding is connected with the energy scheduling device 3 and the elevator equipment 4; for receiving the power supplied by the utility power module 1 when not connected to the grid, and for receiving the power supplied by the utility power module 1 and the energy scheduling means 3 when connected to the grid.

Further, as shown in fig. 2, the energy scheduling apparatus 3 includes: the system comprises a unidirectional DC/DC converter 31, a display 32, an energy scheduling control system 33, an energy storage device management system 34, a sample acquisition device 35, a unidirectional DC/AC converter 36, a bidirectional DC/DC converter 37, an energy storage device 38 and a filtering module 312. The elevator apparatus 4 includes: traction machine 40, elevator inverter 41, elevator control system 42, and non-drive power supply system 43, and elevator inverter 41 includes: a rectifying module 411, an inverting module 412 and a variable frequency control module 413.

The energy storage device management system 34 is connected to the energy storage device 38 and the energy dispatching control system 33, and is configured to obtain the state parameters of the power generation device of the energy storage device 38, determine the charging data and the discharging data of the power generation device, and send the state parameters of the power generation device to the energy dispatching control system 33. The energy dispatching control system 33 is connected to the elevator apparatus 4 for acquiring elevator operation instructions of the elevator apparatus 4. The sample collection device 35 is connected to the mains module 1, and is configured to obtain a mains parameter of the mains module 1. The filtering module 312 is connected to the utility power module 1 and the elevator device 4, and is configured to perform filtering processing on the pulse signal output by the elevator device 4 when the utility power module is connected to the grid, and drive the elevator device 4 based on the pulse signal after the filtering processing.

Further, the filtering module 312 is connected to the traction machine 40, and is used for driving the traction machine 40 based on the pulse signal after the filtering process. The filtering module 312 is connected with the elevator frequency converter 41, and processes the electric energy quality output by the elevator frequency converter 41 so that the processed electric energy quality meets the grid connection requirement. The elevator control system 42 is connected to the energy dispatching control system 33 for acquiring the operating instructions of the elevator installation 4 and transmitting the operating instructions to the energy dispatching control system 33 and acquiring the mains parameters from the energy dispatching control system 33.

Further, the unidirectional DC/DC converter 31 in the energy dispatching device 3 is connected to the elevator apparatus 4 and the energy dispatching control system 33, and is used for converting the voltage of solar energy, storing the converted solar energy in the energy storage device 38, and acquiring a grid-connected instruction transmitted by the energy dispatching control system 33, so as to provide the grid-connected voltage for the elevator apparatus 4. The unidirectional DC/AC converter 36 is connected to the elevator apparatus 4 and the energy dispatching control system 33, and the unidirectional DC/AC converter 36 is used for acquiring the grid-connected instruction transmitted by the energy dispatching control system 33 and providing the elevator apparatus 4 with the elevator grid-connected operation electric energy. The bidirectional DC/DC converter 37 is connected to the energy dispatching control system 33 and the elevator apparatus 4, and acquires a grid-connected instruction transmitted by the energy dispatching control system 33, and supplies a grid-connected voltage to the elevator apparatus 4.

Further, a K5 switch 44 is provided on a connection line of the traction machine 40 and the filter module 312 for disconnecting the traction machine 40 of the elevator apparatus 4 from the drive. The connection line between the filtering module 312 and the mains supply module 1 is provided with a K4 switch 311, and the K4 switch 311 is used for disconnecting the physical connection of the filtering module 312 and other components and disconnecting the grid connection of the mains supply module 1.

Further, a K1 switch 39 is provided on the connection line between the utility power module 1 and the energy dispatching device 3, and a K2 switch 30 is provided on the connection line between the K1 switch 39 and the elevator apparatus 4. The K1 switch 39 is used to switch on or off the connection between the mains module 1 and the domestic appliance 2, the energy scheduling 3, and the elevator installation 4. The K2 switch 30 is used for disconnecting the elevator installation 4 from other components physically.

Further, a K3 switch 310 is provided on the connection line between the household electrical appliance 2 and the energy dispatching device 3, and the K3 switch 310 is used for switching on or switching off the connection between the household electrical appliance 2 and the mains supply module 1, the energy dispatching device 3, and the elevator equipment 4.

Further, the grid-connected power generation system based on elevator feeding further comprises a solar module 5, and the solar module 5 is connected with the energy scheduling device 3 and used for conveying solar energy converted electric energy to the energy scheduling device 3.

In one embodiment, a grid-connected power generation method based on elevator feeding is provided, and the grid-connected power generation method based on elevator feeding is realized through a grid-connected power generation system based on elevator feeding. As shown in fig. 3, in this embodiment, the method includes the following steps:

s210, acquiring a mains supply parameter, and determining whether a mains supply abnormality exists according to the mains supply parameter.

The mains parameters include mains phase sequence, mains phase angle, mains voltage and mains frequency.

The abnormal phenomenon of the mains supply can be a power failure phenomenon or a phenomenon that the parameters of the mains supply do not accord with the normal parameter conditions.

Specifically, a sample collection device in the grid-connected power generation system is used for collecting a mains supply phase sequence, a mains supply phase angle, a mains supply voltage and a mains supply frequency in real time, whether a mains supply module can reach a use standard is determined according to the collected mains supply phase sequence, the mains supply phase angle, the mains supply voltage and the mains supply frequency, if not, a mains supply abnormal phenomenon is determined, and if yes, no mains supply abnormal phenomenon is determined.

S220, if not, determining the running state of the elevator according to the running instruction of the elevator.

The elevator running state can be a working state or an idle state.

Specifically, if no abnormal phenomenon of the commercial power exists, an elevator running instruction of an elevator is obtained from an elevator control system through a power generation device control system in a grid-connected power generation system, whether an elevator running instruction, an elevator outside control instruction and/or an overhaul instruction exist or not is determined according to the elevator running instruction, if yes, the elevator running state is determined to be a working state, and if not, the elevator running state is determined to be an idle state.

And S230, if the elevator running state is the working state, supplying power to the elevator equipment through the energy scheduling device and the mains supply module, acquiring the electric energy fed back when the elevator runs, and charging the energy storage equipment in the energy scheduling device by adopting the electric energy fed back when the elevator runs.

The energy storage device may be a rechargeable battery.

Specifically, if the elevator running state is a working state, the energy required by running is provided for the elevator equipment through the energy scheduling device and the commercial power module, meanwhile, the recovery of the electric energy fed back when the elevator runs is realized through an inverter of the elevator equipment in the grid-connected power generation system and a direct current bus connected with the inverter, and the energy storage equipment in the energy scheduling device is charged through the electric energy fed back when the elevator runs.

S240, if the elevator running state is the idle state, determining whether the determined time of the elevator running state is the allowable discharge time.

The allowable discharge time refers to the time for performing inversion networking, namely the time for performing grid-connected discharge. The allowable discharge time may be preset according to actual needs.

Specifically, if the elevator is in an idle state, acquiring the determination time of the elevator running state, and determining whether the determination time of the elevator running state belongs to a preset allowable discharge time.

The method has the advantages that the allowable discharging time is set to cut off peaks and fill valleys so as to reduce the power supply pressure of a power grid, the time period of the electric energy grid-connected output of the elevator can be controlled, the load of the power grid is reduced in a planned manner, the grid-connected action frequency can be reduced, and the service life of a grid-connected power generation system is prolonged.

And S250, if yes, controlling the elevator frequency converter to carry out grid-connected discharge on the commercial power module through the energy scheduling device.

The grid-connected power generation means that a power transmission line of a generator set is connected with a power transmission network.

Specifically, if the determined time of the elevator running state is the allowable discharge time, the on-off switches K1, K2, K3 or K4 in the grid-connected power generation system are controlled to be closed by the energy scheduling control system in the energy scheduling device, and the on-off switches K5 are controlled to be opened, the energy scheduling control system sends the commercial power parameters acquired by the sample acquisition equipment to the elevator control system, and then the elevator control system informs a frequency conversion control module in an elevator frequency converter to control an inversion module to perform inversion grid-connected action, so that grid-connected discharge of the commercial power module is realized. When the utility power module is not subjected to grid-connected discharge, the utility power module is used for providing electric energy for elevator equipment and civil electric appliances in a grid-connected power generation system, and when the utility power module is subjected to grid-connected discharge through the energy scheduling device, the energy scheduling device can be used for controlling the elevator frequency converter to provide electric energy for the elevator equipment and the civil electric appliances.

In the grid-connected power generation method based on elevator feeding, the commercial power parameters are collected, and whether the commercial power abnormality exists is determined according to the commercial power parameters; if not, determining the running state of the elevator according to the running instruction of the elevator; if the elevator running state is the working state, the energy scheduling device and the commercial power module supply power to the elevator equipment, the electric energy fed back during the elevator running is obtained, and the energy storage equipment in the energy scheduling device is charged by adopting the electric energy fed back during the elevator running; if the elevator running state is an idle state, determining whether the determined time of the elevator running state is the allowable discharge time or not; if yes, the energy scheduling device controls the elevator frequency converter to convert direct current output by the energy storage device into power frequency electricity to carry out grid-connected discharging on the commercial power module. The method solves the problems that when grid-connected discharging is carried out on the commercial power module based on the electric energy fed back by the operation of the elevator, electric energy feedback equipment comprising a high-power inverter and a voltage transformation device is needed, so that the power required by the grid-connected power generation method for realizing the feeding of the elevator is high, grid-connected discharging cannot be carried out on the commercial power module according to the operation condition and the operation time of the elevator, and the utilization efficiency of the electric energy is low. The grid connection is completed by adopting the middle inversion part of the frequency converter of the elevator equipment, the energy storage equipment in the energy scheduling device can be charged according to the electric energy fed back when the elevator operates, the electric energy of the energy storage equipment is timely released, grid connection discharging can be performed on the mains supply module without additionally adding inversion equipment, grid connection power generation of low-power-consumption elevator feed is realized, the intelligent level of elevator power supply is improved, and meanwhile, the utilization efficiency of the electric energy is improved.

In one embodiment, as shown in fig. 4, grid-connected discharging is performed on the mains module by the energy scheduling device, including:

s310, determining whether the residual electric quantity of the energy storage equipment in the energy scheduling device is larger than a set discharge value.

Wherein, the set discharge value can be set according to actual needs.

Specifically, the energy storage state parameters of the energy storage equipment in the energy scheduling device are obtained through the energy storage equipment management system BMS in the energy scheduling device, the energy storage state parameters can comprise charging data, discharging data and residual electric quantity of the energy storage equipment, the residual electric quantity of the energy storage equipment in the energy scheduling device is determined according to the energy storage state parameters, and whether the residual electric quantity of the energy storage equipment is larger than a set discharging value is determined.

And S320, if yes, grid-connected discharging is carried out on the commercial power module through the energy scheduling device, and the electric quantity of the energy storage equipment after discharging is detected in real time in the grid-connected discharging process.

Specifically, in the grid-connected discharging process, the discharged electric quantity of the energy storage equipment in the energy scheduling device is obtained in real time through the energy storage equipment management system.

If the residual electric quantity of the energy storage equipment in the energy scheduling device is larger than the set discharge value, determining a target voltage through the mains supply parameter, and controlling the voltage converter to output the target voltage through the equipment control system of the energy scheduling device; executing an inversion grid-connected instruction through an elevator frequency converter, and determining inversion output electric energy; and filtering the inversion output electric energy based on the target voltage to determine grid-connected electric energy, and performing grid-connected discharge on the commercial power module through an energy scheduling device based on the grid-connected electric energy.

The elevator frequency converter is a frequency converter in elevator equipment, the inversion output electric energy is that the elevator frequency converter converts direct current output by the energy storage equipment into power frequency electricity, the voltage converter comprises bidirectional DC/DC and unidirectional DC/DC, and the grid-connected electric energy is that the waveform and the frequency meet the grid-connected requirement.

Specifically, if the residual electric quantity of the energy storage equipment in the energy scheduling device is larger than a set discharge value, the energy scheduling control system in the energy scheduling device is used for sending the commercial power parameter acquired by the sample acquisition equipment to the elevator control system, then the elevator control system is used for determining a target voltage according to the commercial power parameter, the elevator control system is used for informing the frequency conversion control module in the elevator frequency converter to control the inversion module to perform inversion grid-connection action, meanwhile, the energy scheduling control system is used for controlling the bidirectional DC/DC and the unidirectional DC/DC in the energy scheduling device to output the target voltage to the bus, filtering processing is performed on the inversion output electric energy to determine grid-connection electric energy based on the target voltage, and grid-connection discharging is performed on the commercial power module based on the grid-connection electric energy through the energy scheduling device.

For example, the voltage output of the bi-directional DC/DC may be controlled according to the overall power supply demand such that the voltage output by the bi-directional DC/DC meets the power supply demand. For example, when the elevator is powered in an abnormal condition of the utility power module, the voltage output of the bidirectional DC/DC is the bus voltage in a normal condition, and the DC bus voltage needs to be maintained at DC540V; the DC/DC voltage output of the commercial power module is normally carried out, the output voltage is slightly higher than the bus voltage, and the electric energy can flow from the energy storage device to the DC bus; when the inversion networking is performed, the voltage output of the DC/DC reaches 650-720V.

It can be understood that the grid-connected electric energy is determined by filtering the inverted output electric energy of the elevator frequency converter, so that the square wave output by the elevator frequency converter is more similar to a sine wave after being processed by the filter, and the motor of the elevator equipment can be driven to operate better, thereby realizing the effects of reducing noise and vibration and reducing harmonic loss.

S330, if the electric quantity after discharging is smaller than or equal to the target electric quantity value, stopping grid-connected discharging of the commercial power module.

The target discharge value can be set according to actual requirements.

Specifically, if the electric quantity of the energy storage device after discharge is smaller than or equal to the target electric quantity value, the on-off switch K4 in the grid-connected power generation system is controlled to be opened by the energy scheduling control system in the energy scheduling device, and K1, K2, K3 or K5 is controlled to be closed so as to stop grid-connected discharge on the mains supply module.

In the embodiment, whether the grid-connected discharge is performed on the commercial power module is determined according to the residual electric quantity of the energy storage device in the energy scheduling device, the electric quantity after the discharge of the energy storage device is obtained in real time in the grid-connected discharge process, and the grid-connected discharge is stopped in time when the electric quantity after the discharge is smaller than or equal to the preset target electric quantity, so that the energy storage device fault caused by excessive operation of the energy scheduling device can be avoided, and the service life of the energy storage device is prolonged.

In one embodiment, as shown in fig. 5, after collecting the mains parameters and determining whether there is a mains abnormality according to the mains parameters, the method further includes:

and S410, if the commercial power abnormality exists and passengers exist in the elevator car, executing an in-car instruction, controlling the energy storage equipment to supply power to the elevator by the energy scheduling device, and selecting a subsequent target power supply scheme from the candidate power supply schemes according to the power supply time after determining that the passengers leave the elevator car.

The in-car instruction refers to instruction information sent by passengers in the elevator car through elevator control keys. Candidate power supply schemes include elevator priority power supply and household appliance priority power supply. The preferential power supply of the elevator refers to that when the energy scheduling device performs grid-connected discharge on the commercial power module, the elevator is preferentially provided with electric energy required by grid-connected operation of the elevator. The civil electrical appliance power supply means that when grid-connected discharging is carried out on the commercial power module through the energy scheduling device, electric energy is preferentially supplied to the civil electrical appliance. The subsequent target power supply scheme refers to the power supply scheme performed by the elevator after the passenger leaves the elevator car.

Specifically, if the abnormal phenomenon of the commercial power exists, whether passengers exist in the elevator car or not can be determined according to whether the incomplete car instructions exist in the elevator car, and if the incomplete car instructions exist in the elevator car, the passengers exist in the elevator car. If it is determined that passengers exist in the elevator car, power is supplied to the elevator equipment through the energy scheduling device so that the elevator continues to execute the instructions in the car, the energy storage equipment is controlled to supply power to the elevator through the energy scheduling device, after it is determined that all passengers in the car leave the elevator car, the current time is determined to be the power supply time, and whether the power supply time is the elevator use peak time or the civil electric appliance use peak time is determined. If the power supply time is the peak time of elevator use, the target power supply scheme is to supply power to the elevator preferentially; if the power supply time is peak time of civil electric appliance, the target power supply scheme is to supply power to the civil electric appliance preferentially.

For example, the method for selecting the target power supply scheme from the candidate power supply schemes according to the power supply time may be: determining whether the passenger leaves the elevator car through sensing information acquired by sensing equipment in the elevator car; if yes, acquiring power supply time, and selecting a subsequent target power supply scheme from the candidate power supply schemes according to the power supply time and the association relation between the candidate time and the candidate power supply schemes.

The sensing devices may be an imaging device in the car and an in-car load sensor. The association relation between the candidate time and the candidate power supply scheme can be determined according to the historical domestic electric appliance power consumption peak time and the historical elevator power consumption peak time.

According to the scheme, the target power supply scheme is selected from the candidate power supply schemes according to the power supply time and the association relation between the candidate time and the candidate power supply scheme, so that the determination efficiency of the target power supply scheme can be improved.

And S420, if the target power supply scheme is to supply power to the elevator preferentially, determining whether the residual electric quantity of the energy storage equipment in the energy scheduling device is larger than an electric quantity threshold value.

The electric quantity threshold value can be set according to actual requirements.

Specifically, if the target power supply scheme is that the elevator supplies power preferentially under the condition that the commercial power module is abnormal, the energy storage device management system in the energy scheduling device is used for acquiring the residual electric quantity of the energy storage device in the energy scheduling device, and whether the residual electric quantity is larger than a preset electric quantity threshold value is determined.

And S430, if so, controlling the energy storage equipment to provide operation electric energy for the elevator through the energy scheduling device, and charging the energy storage equipment in the energy scheduling device by adopting the electric energy fed back during the operation of the elevator.

Specifically, if the remaining capacity of the energy storage device is greater than a preset capacity threshold, the on-off switch K5 is controlled to be closed by an energy scheduling control system in the energy scheduling device, the on-off switches K1, K2, K3 or K4 are controlled to be opened, and the unidirectional DC/AC is controlled by the energy scheduling control system to provide electric energy for a non-driving power supply system of the elevator device, so that the elevator device can be ensured to normally operate, and the bidirectional DC/DC is controlled to operate according to actual working conditions. In the running process of the elevator, the recovery of the electric energy fed back during the running of the elevator is realized when the overall potential energy of the elevator is reduced through an inverter of elevator equipment in a grid-connected power generation system and a direct current bus connected with the inverter, and the energy storage equipment in the energy scheduling device is charged through the electric energy fed back during the running of the elevator. For example, the overall potential energy of the elevator may decrease when the elevator is traveling empty or when the elevator is traveling fully.

For example, if the remaining capacity of the energy storage device is less than or equal to the preset capacity threshold, no new elevator operation instruction is received, after the existing elevator car instruction is executed and it is determined that all passengers leave the elevator car, the on-off switch K4 is controlled to be turned off, and the on-off switches K1, K2, K3 or K5 are controlled to be turned on, so that the commercial power module is waited for to be recovered to be normal.

After the target power supply scheme is determined, if the residual electric quantity of the energy storage equipment in the energy scheduling device is smaller, other elevator operation instructions are not received after the existing elevator operation instructions of the elevator equipment are executed, so that the risk that passengers are trapped in an elevator car due to the fact that the electric quantity of the energy storage equipment is exhausted can be avoided, and the personal safety of the passengers is guaranteed.

Above-mentioned scheme, after confirming that the target scheme is the elevator priority power supply, provide the electric energy for elevator equipment through energy dispatch device to the energy storage equipment in the energy dispatch device is charged through the electric energy of elevator during operation repayment in elevator operation in-process, has improved user experience, has improved the utilization efficiency of electric energy simultaneously.

In one embodiment, as shown in fig. 6, if yes, and a passenger is detected to exist in the elevator car, executing an in-car instruction, the energy scheduling device controls the energy storage device to supply power to the elevator, and after determining that the passenger leaves the elevator car, selecting a subsequent target power supply scheme from candidate power supply schemes according to the power supply time, and further including:

and S510, if the target power supply scheme is to supply power to the household appliances preferentially, determining whether the residual electric quantity of the energy storage equipment in the energy scheduling device is smaller than an electric quantity early warning value.

Specifically, if the target power supply scheme is to supply power to the household appliances preferentially, the energy storage device management system in the energy scheduling device is used for acquiring the residual electric quantity of the energy storage device in the energy scheduling device, and determining whether the residual electric quantity is smaller than an electric quantity early warning value.

If the remaining power of the energy storage device in the energy scheduling device is smaller than the power early-warning value, determining power warning information according to the remaining power of the energy storage device, and determining whether the remaining power of the energy storage device is lower than the power stop value; if the residual electric quantity of the energy storage equipment is higher than or equal to the power supply stopping value, providing electric energy for the household appliances through the energy scheduling device, and controlling an elevator frequency converter to provide electric energy for the household appliances through an elevator control system; and if the residual electric quantity of the energy storage equipment is lower than the power supply stopping value, stopping supplying electric energy to the household appliances.

The different residual electric quantities can correspond to different electric quantity alarm information, and the electric quantity alarm information can be text information or audio information.

Specifically, if the remaining power of the energy storage device in the energy scheduling device is smaller than the power early-warning value, determining power warning information according to the remaining power of the energy storage device, and determining whether the remaining power of the energy storage device is lower than the power stop value. If the residual electric quantity is higher than or equal to the power supply stopping value, the on-off switch K3 or K4 is controlled to be closed, and the on-off switch K1, K2 or K5 is controlled to be opened, so that the elevator frequency converter is controlled to output electric energy to supply power for the household appliances through the energy dispatching control system and the elevator control system. If the residual electric quantity of the energy storage equipment is lower than the power supply stopping value, stopping supplying power to the household electrical appliance, controlling the on-off switch K4 to be opened, controlling the on-off switches K1, K2, K3 or K5 to be closed, and waiting for the normal state of the commercial power module.

According to the scheme, when the residual electric quantity of the energy storage device in the energy scheduling device is determined to be smaller than the electric quantity early warning value, the electric quantity warning information can be generated according to the residual electric quantity so as to remind maintenance personnel that the residual electric quantity is insufficient, and the power supply for the civil electric appliance is stopped when the residual electric quantity of the energy storage device is lower than the power supply stopping value, so that the damage of the energy storage device is avoided, and the service life of the energy storage device is prolonged.

And S520, if not, providing electric energy for the household appliances through the energy scheduling device, and controlling the elevator frequency converter to provide electric energy for the household appliances through the elevator control system.

Specifically, if the residual electric quantity of the energy storage device is greater than or equal to the electric quantity early warning value, the energy source scheduling device provides electric energy for the household appliances, and the elevator control system controls the elevator frequency converter to provide electric energy for the household appliances.

According to the scheme, when the residual electric quantity of the energy storage equipment in the energy scheduling device is larger than or equal to the electric quantity early warning value, the energy scheduling device is used for providing electric energy for household appliances, the elevator control system is used for controlling the elevator frequency converter to provide electric energy for the household appliances, and domestic electricity can be guaranteed.

Illustratively, on the basis of the above embodiment, the grid-connected power generation method based on elevator feeding includes:

The method comprises the steps of acquiring a mains supply phase sequence, a mains supply phase angle, a mains supply voltage and a mains supply frequency in real time through sample acquisition equipment in a grid-connected power generation system, determining whether a mains supply module can reach a use standard according to the acquired mains supply phase sequence, the mains supply phase angle, the mains supply voltage and the mains supply frequency, if not, determining that a mains supply abnormal phenomenon exists, and if yes, determining that the mains supply abnormal phenomenon does not exist. If the abnormal phenomenon of the commercial power does not exist, the control system of the power generation device in the grid-connected power generation system acquires the elevator running instruction of the elevator from the elevator control system, whether the elevator running instruction exists or not is determined according to the elevator running instruction, if so, the elevator running state is determined to be the working state, and if not, the elevator running state is determined to be the idle state.

If the elevator running state is the working state, the energy required by running is provided for the elevator equipment through the energy scheduling device and the commercial power module, meanwhile, the electric energy fed back when the elevator runs is recovered through the inverter of the elevator equipment in the grid-connected power generation system and the direct current bus connected with the inverter, and the energy storage equipment in the energy scheduling device is charged through the electric energy fed back when the elevator runs. If the elevator is in the idle state, acquiring the determination time of the elevator running state, and determining whether the determination time of the elevator running state belongs to the preset allowable discharge time.

If the determined time of the elevator running state is the allowable discharge time, acquiring an energy storage state parameter of energy storage equipment in the energy scheduling device through an energy storage equipment management system in the energy scheduling device, determining the residual electric quantity of the energy storage equipment in the energy scheduling device according to the energy storage state parameter, and determining whether the residual electric quantity of the energy storage equipment is larger than a set discharge value.

If the residual electric quantity of the energy storage equipment in the energy scheduling device is larger than a set discharge value, the energy scheduling control system in the energy scheduling device controls on-off switches K1, K2, K3 or K4 in the grid-connected power generation system to be closed and controls K5 to be opened through the energy scheduling control system, the mains supply parameter acquired by the sample acquisition device is sent to the elevator control system through the energy scheduling control system, then the elevator control system determines a target voltage according to the mains supply parameter, the elevator control system informs a frequency conversion control module in an elevator frequency converter to control an inversion module to perform inversion grid-connection action, meanwhile, the energy scheduling control system controls bidirectional DC/DC and unidirectional DC/DC in the energy scheduling device to output the target voltage to a bus, the filtering module is used for filtering the inversion output electric energy to determine grid-connection electric energy based on the target voltage, and the mains supply module is used for grid-connection discharging. If the electric quantity of the energy storage equipment after discharging is smaller than or equal to the target electric quantity value, an on-off switch K4 in the grid-connected power generation system is controlled to be opened by an energy scheduling control system in the energy scheduling device, and K1, K2, K3 or K5 is controlled to be closed so as to stop grid-connected discharging of the mains supply module.

If the abnormal phenomenon of the commercial power exists according to the commercial power parameters, whether the passenger leaves the elevator car is determined through sensing information acquired by sensing equipment in the elevator car, if so, power supply time is acquired, and a target power supply scheme is selected from the candidate power supply schemes according to the power supply time and the association relation between the candidate time and the candidate power supply scheme.

If the target power supply scheme is that the elevator supplies power preferentially under the condition that the commercial power module is abnormal, acquiring the residual electric quantity of energy storage equipment in the energy scheduling device through an energy storage equipment management system in the energy scheduling device, and determining whether the residual electric quantity is larger than a preset electric quantity threshold value. If the residual electric quantity of the energy storage equipment is larger than a preset electric quantity threshold value, the on-off switch K5 is controlled to be closed by an energy dispatching control system in the energy dispatching device, the on-off switches K1, K2, K3 or K4 are controlled to be opened, and the unidirectional DC/AC is controlled by the energy dispatching control system to provide electric energy for a non-driving power supply system of the elevator equipment so as to ensure that the elevator equipment can normally operate and control the bidirectional DC/DC to operate according to actual working conditions. In the elevator operation process, the electric energy fed back during elevator operation is recovered when the overall potential energy of the elevator is reduced through an inverter of elevator equipment in the grid-connected power generation system and a direct current bus connected with the inverter, and the energy storage equipment in the energy scheduling device is charged through the electric energy fed back during elevator operation. If the residual electric quantity of the energy storage equipment is smaller than or equal to a preset electric quantity threshold value, a new elevator operation instruction is not received any more, after the existing elevator car instruction is executed and all passengers are determined to leave an elevator car, the on-off switch K4 is controlled to be opened, the on-off switches K1, K2, K3 or K5 are controlled to be closed, and the commercial power module is waited to be recovered to be normal.

If the target power supply scheme is that the household appliances supply power preferentially, the energy storage device management system in the energy scheduling device is used for acquiring the residual electric quantity of the energy storage device in the energy scheduling device, and determining whether the residual electric quantity is smaller than an electric quantity early warning value.

If the residual electric quantity of the energy storage equipment in the energy scheduling device is smaller than the electric quantity early warning value, determining electric quantity warning information according to the residual electric quantity of the energy storage equipment, and meanwhile determining whether the residual electric quantity of the energy storage equipment is lower than a power supply stopping value. If the residual electric quantity is higher than or equal to the power supply stopping value, the on-off switch K3 or K4 is controlled to be closed, and the on-off switch K1, K2 or K5 is controlled to be opened, so that the elevator frequency converter is controlled to output electric energy to supply power for the household appliances through the energy dispatching control system and the elevator control system. If the residual electric quantity of the energy storage equipment is lower than the power supply stopping value, stopping supplying power to the household electrical appliance, controlling the on-off switch K4 to be opened, controlling the on-off switches K1, K2, K3 or K5 to be closed, and waiting for the normal state of the commercial power module. If the residual electric quantity of the energy storage equipment is larger than or equal to the electric quantity early warning value, the energy source scheduling device provides electric energy for the household appliances, and the elevator control system controls the elevator frequency converter to provide electric energy for the household appliances.

In the grid-connected power generation method based on elevator feeding, the commercial power parameters are collected, and whether the commercial power abnormality exists is determined according to the commercial power parameters; if not, determining the running state of the elevator according to the running instruction of the elevator; if the elevator running state is the working state, acquiring the electric energy fed back by the elevator during running, and charging energy storage equipment in the energy scheduling device by adopting the electric energy fed back by the elevator during running; if the elevator running state is an idle state, determining whether the determined time of the elevator running state is the allowable discharge time or not; if yes, grid-connected discharging is carried out on the commercial power module through the energy scheduling device. The method solves the problems that when grid-connected discharging is carried out on the commercial power module based on the electric energy fed back by the operation of the elevator, electric energy feedback equipment comprising a high-power inverter and a voltage transformation device is needed, so that the power required by the grid-connected power generation method for realizing the feeding of the elevator is high, grid-connected discharging cannot be carried out on the commercial power module according to the operation condition and the operation time of the elevator, and the utilization efficiency of the electric energy is low. The grid connection is completed by adopting the middle inversion part of the frequency converter of the elevator equipment, so that the energy storage equipment in the energy scheduling device can be charged according to the electric energy fed back when the elevator operates, the electric energy of the energy storage equipment is timely released, grid connection discharge can be performed on a mains supply module without additionally adding inversion equipment, grid connection power generation of low-power-consumption elevator feed is realized, the intelligent level of elevator power supply is improved, and meanwhile, the utilization efficiency of the electric energy is improved.

It should be understood that, although the steps in the flowcharts related to the embodiments described above are sequentially shown as indicated by arrows, these steps are not necessarily sequentially performed in the order indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in the flowcharts described in the above embodiments may include a plurality of steps or a plurality of stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of the steps or stages is not necessarily performed sequentially, but may be performed alternately or alternately with at least some of the other steps or stages.

Based on the same inventive concept, the embodiment of the application also provides an elevator feed-based grid-connected power generation device for realizing the elevator feed-based grid-connected power generation method. The implementation scheme of the solution to the problem provided by the device is similar to the implementation scheme described in the above method, so the specific limitation in one or more embodiments of the grid-connected power generation device based on elevator feeding provided below can be referred to the limitation of the grid-connected power generation method based on elevator feeding hereinabove, and will not be repeated here.

The grid-connected power generation device based on elevator feeding further comprises:

the alarm information determining module is used for determining electric quantity alarm information according to the residual electric quantity of the energy storage equipment if yes, and determining whether the residual electric quantity is lower than a power supply stopping value;

the second civil electric appliance power supply module is used for providing electric energy for the civil electric appliances through the energy scheduling device if the residual electric energy is higher than or equal to the power supply stopping value, and controlling the elevator frequency converter to provide electric energy for the civil electric appliances through the elevator control system;

and the power supply stopping control module is used for stopping supplying electric energy to the household appliances if the power supply stopping control module is used for stopping supplying electric energy to the household appliances.

Illustratively, the target power scheme determination module is specifically configured to:

determining whether the passenger leaves the elevator car through sensing information acquired by sensing equipment in the elevator car;

if yes, acquiring power supply time, and selecting a target power supply scheme from the candidate power supply schemes according to the power supply time and the association relation between the candidate time and the candidate power supply schemes.

The modules in the grid-connected power generation device based on elevator feeding can be fully or partially realized by software, hardware and a combination thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.

In one embodiment, a computer device is provided, which may be a terminal, and the internal structure of which may be as shown in fig. 7. The computer device includes a processor, a memory, an input/output interface, a communication interface, a display unit, and an input means. The processor, the memory and the input/output interface are connected through a system bus, and the communication interface, the display unit and the input device are connected to the system bus through the input/output interface. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The input/output interface of the computer device is used to exchange information between the processor and the external device. The communication interface of the computer device is used for carrying out wired or wireless communication with an external terminal, and the wireless mode can be realized through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. The computer program, when executed by the processor, implements a grid-connected power generation method based on elevator feeding. The display unit of the computer device is used for forming a visual picture, and can be a display screen, a projection device or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, can also be a key, a track ball or a touch pad arranged on the shell of the computer equipment, and can also be an external keyboard, a touch pad or a mouse and the like.

It will be appreciated by those skilled in the art that the structure shown in fig. 7 is merely a block diagram of some of the structures associated with the present application and is not limiting of the computer device to which the present application may be applied, and that a particular computer device may include more or fewer components than shown, or may combine certain components, or have a different arrangement of components.

In one embodiment, a computer device is provided comprising a memory and a processor, the memory having stored therein a computer program, the processor when executing the computer program performing the steps of:

step one, acquiring a mains supply parameter, and determining whether a mains supply abnormality exists according to the mains supply parameter; the mains parameters comprise mains phase sequence, mains phase angle, mains voltage and mains frequency;

step two, if not, determining the running state of the elevator according to the running instruction of the elevator;

step three, if the elevator running state is the working state, supplying power to the elevator equipment through an energy scheduling device and/or a mains supply module, acquiring electric energy fed back when the elevator runs, and charging energy storage equipment in the energy scheduling device by adopting the electric energy fed back when the elevator runs;

step four, if the elevator running state is an idle state, determining whether the determined time of the elevator running state is the allowable discharge time or not;

And fifthly, if yes, controlling the elevator frequency converter to perform grid-connected discharge on the commercial power module through the energy scheduling device.

In one embodiment, a computer readable storage medium is provided having a computer program stored thereon, which when executed by a processor, performs the steps of:

In one embodiment, a computer program product is provided comprising a computer program which, when executed by a processor, performs the steps of:

It should be noted that, the user information (including, but not limited to, user equipment information, user personal information, etc.) and the data (including, but not limited to, data for analysis, stored data, presented data, etc.) referred to in the present application are information and data authorized by the user or sufficiently authorized by each party, and the collection, use and processing of the related data are required to comply with the related laws and regulations and standards of the related countries and regions.

Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, database, or other medium used in the various embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, high density embedded nonvolatile Memory, resistive random access Memory (ReRAM), magnetic random access Memory (Magnetoresistive Random Access Memory, MRAM), ferroelectric Memory (Ferroelectric Random Access Memory, FRAM), phase change Memory (Phase Change Memory, PCM), graphene Memory, and the like. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory, and the like. By way of illustration, and not limitation, RAM can be in the form of a variety of forms, such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), and the like. The databases referred to in the various embodiments provided herein may include at least one of relational databases and non-relational databases. The non-relational database may include, but is not limited to, a blockchain-based distributed database, and the like. The processors referred to in the embodiments provided herein may be general purpose processors, central processing units, graphics processors, digital signal processors, programmable logic units, quantum computing-based data processing logic units, etc., without being limited thereto.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the present application. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application shall be subject to the appended claims.

Claims

1. A grid-connected power generation method based on elevator feeding, characterized in that the method is realized by a grid-connected power generation system based on elevator feeding, and the method comprises the following steps:

if yes, controlling an elevator frequency converter to perform grid-connected discharge on the commercial power module through the energy scheduling device;

the elevator frequency converter is controlled by the energy scheduling device to carry out grid-connected discharge on the commercial power module, and the method comprises the following steps:

if the electric quantity after discharging is smaller than or equal to the target electric quantity value, stopping grid-connected discharging of the commercial power module;

if yes, the elevator frequency converter is controlled by the energy scheduling device to carry out grid-connected discharge on the commercial power module, and the method comprises the following steps:

2. The method of claim 1, wherein after collecting the mains parameters and determining whether there is a mains anomaly based on the mains parameters, further comprising:

3. The method of claim 2, wherein if yes and a passenger is detected to be present in the elevator car, executing the in-car instruction, the energy scheduling device controlling the energy storage device to power the elevator, and after determining that the passenger leaves the elevator car, selecting a subsequent target power supply scheme from the candidate power supply schemes according to the power supply time, further comprising:

4. The method according to claim 3, wherein if the target power supply scheme is to supply power to the consumer preferentially, determining whether the remaining power of the energy storage device of the energy scheduling apparatus is less than the power early-warning value further comprises:

if yes, stopping supplying the electric energy to the household appliances.

5. The method of claim 2, wherein after determining that a passenger leaves the elevator car, selecting a subsequent target power supply solution from the candidate power supply solutions based on a power supply time comprises:

6. The utility model provides a grid-connected power generation system based on elevator feed which characterized in that, the system is used for realizing the grid-connected power generation method based on elevator feed, and the grid-connected power generation system based on elevator feed includes: the system comprises a mains supply module, an energy scheduling device and elevator equipment;

the energy scheduling device is also used for controlling an elevator frequency converter in the elevator equipment to carry out grid-connected discharge on a commercial power module through an energy scheduling control system in the energy scheduling device when the elevator running state is an idle state and the determined time of the elevator running state is the allowable discharge time;

The energy scheduling device is also used for controlling the elevator frequency converter to perform grid-connected discharge on the mains supply module if the residual electric quantity of the energy storage equipment is larger than a set discharge value, and detecting the electric quantity of the energy storage equipment after discharge in real time in the grid-connected discharge process; if the electric quantity after discharging is smaller than or equal to the target electric quantity value, stopping grid-connected discharging of the commercial power module;

the energy scheduling device is further used for determining a target voltage through a mains supply parameter if the residual electric quantity of the energy storage equipment is larger than a set discharge value, and controlling a voltage converter to output the target voltage through an equipment control system of the energy scheduling device; executing an inversion grid-connected instruction through an elevator frequency converter, and determining inversion output electric energy; and filtering the inversion output electric energy based on the target voltage to determine grid-connected electric energy, and controlling an elevator frequency converter to perform grid-connected discharge on a commercial power module based on the grid-connected electric energy.

7. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the steps of the method of any one of claims 1 to 5 when the computer program is executed.

8. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any one of claims 1 to 5.