CN110350647B - UPS reverse-irrigation energy discharge method and device and terminal - Google Patents
UPS reverse-irrigation energy discharge method and device and terminal Download PDFInfo
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- CN110350647B CN110350647B CN201910482712.4A CN201910482712A CN110350647B CN 110350647 B CN110350647 B CN 110350647B CN 201910482712 A CN201910482712 A CN 201910482712A CN 110350647 B CN110350647 B CN 110350647B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
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Abstract
The invention is suitable for the technical field of UPS, and provides a discharge method, a discharge device and a terminal for UPS reverse irrigation energy. Wherein the bleeding method comprises: judging whether the UPS generates energy reverse irrigation; if the UPS generates energy reverse flow, an energy discharge circuit of the UPS is controlled to be conducted with a bus of the UPS, and a designated part of the UPS is controlled to execute a preset energy consumption action; and when the conduction time of the energy release circuit and the bus reaches the preset duration or the reverse flow energy of the UPS is detected to be smaller than the preset value, the energy release circuit is controlled to be disconnected with the bus. According to the invention, on one hand, the energy discharge circuit is utilized to discharge and consume the energy reversely poured to the bus, on the other hand, the appointed part of the UPS is utilized to execute the preset energy consumption action, so that the reverse pouring energy is quickly discharged, the bus is prevented from being reversely poured to a high-voltage protection state to generate power supply interruption, and the energy discharge circuit can be timely disconnected after the reverse pouring energy is reduced.
Description
Technical Field
The invention belongs to the technical field of UPS, and particularly relates to a discharge method, a discharge device, a terminal and a computer readable storage medium for UPS reverse irrigation energy.
Background
An Uninterruptible Power Supply (UPS) is a system device that connects an energy storage unit (e.g., a battery) to a host and converts dc Power to utility Power through an inverter of the host, and is mainly used to provide stable and uninterrupted Power Supply to a single computer, a computer network system, or other Power and electric devices such as a load, e.g., an electromagnetic valve, a pressure transmitter, etc.
In some application scenarios, the load may be back-energized to the UPS, for example, a UPS with a motor type load, and when the motor is braking or accelerating, the motor will back-energize the UPS, which may cause the bus of the UPS to be back-energized to a high-voltage protection state, and thus a power supply interruption occurs.
Disclosure of Invention
In view of this, the present invention provides a bleeding method, a bleeding device, a terminal and a computer-readable storage medium for UPS reverse-filling energy, and aims to solve the problem in the prior art that a bus of a UPS is reversely filled to a high-voltage protection state due to reverse filling of energy to the UPS by a load, thereby causing power interruption.
A first aspect of an embodiment of the present invention provides a method for discharging UPS reverse-irrigation energy, including:
judging whether the UPS generates energy reverse irrigation;
if the UPS generates energy reverse flow, an energy discharge circuit of the UPS is controlled to be conducted with a bus of the UPS, and a designated part of the UPS is controlled to execute a preset energy consumption action;
and when the conduction time of the energy release circuit and the bus reaches a preset time or the reverse filling energy of the UPS is detected to be smaller than a preset value, the energy release circuit is controlled to be disconnected with the bus.
A second aspect of an embodiment of the present invention provides a discharge device for UPS reverse-irrigation energy, including:
the judging unit is used for judging whether the UPS generates energy reverse irrigation;
the first control unit is used for controlling an energy discharge circuit of the UPS to be conducted with a bus of the UPS and controlling a specified component of the UPS to execute a preset energy consumption action if the UPS generates energy reverse irrigation;
and the second control unit is used for controlling the energy discharge circuit to be disconnected with the bus when the conduction time of the energy discharge circuit and the bus reaches a preset time length or the reverse flow energy of the UPS is detected to be smaller than a preset value.
A third aspect of the embodiments of the present invention provides a terminal, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor, when executing the computer program, implements the steps of the UPS reverse-charging energy bleeding method according to any one of the above embodiments.
A fourth aspect of embodiments of the present invention provides a computer-readable storage medium, which stores a computer program, and when the computer program is executed by a processor, the computer program implements the steps of the UPS reverse-charging energy bleeding method according to any one of the above.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, whether the UPS generates energy reverse irrigation is judged, when the UPS generates energy reverse irrigation, the energy release circuit of the UPS is controlled to be communicated with the bus, and the energy released from the bus reversely irrigated is consumed by the energy release circuit; in addition, the designated part of the UPS is controlled to execute a preset energy consumption action, namely, the part of the UPS is utilized to realize the effective utilization of the reverse irrigation energy on one hand, and on the other hand, the consumption of the reverse irrigation energy can be further accelerated; and when the conduction time of the energy release circuit and the bus reaches the preset duration or the reverse filling energy is detected to be smaller than the preset value, the energy release circuit can be controlled to be disconnected with the bus, so that the energy release circuit is timely disconnected after the reverse filling energy is reduced, and the energy release circuit can not consume the normal power supply energy of the UPS.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic view of an application scenario of a method for bleeding UPS reverse-charging energy according to an embodiment of the present invention;
fig. 2 is a flowchart of an implementation of a method for bleeding back-filling energy of a UPS according to an embodiment of the present invention;
fig. 3 is a flowchart of another implementation of a method for bleeding UPS reverse-charging energy according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a discharge device for UPS reverse-charging energy according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a terminal according to an embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following description is made by way of specific embodiments with reference to the accompanying drawings.
Referring to fig. 1, which illustrates an application scenario of the method for bleeding back-filling energy of a UPS according to an embodiment of the present invention, as shown in fig. 1, a typical UPS may include a bus 11 (dc bus), an inverter 12 connected to the bus 11, a boost circuit 13, a storage battery 14 (energy storage unit), and a fan 15. If the connected load is a load with a motor, energy is reversely charged to the bus of the UPS by the load (motor) through the inverter 12 when the motor is braked or accelerated, that is, the motor connected to the port B may generate reverse current (voltage) to be input to the bus 11 of the UPS through the inverter 12, which may cause the voltage of the bus 11 to rise to trigger a high-voltage protection state, and thus power supply interruption occurs. The port a on the side of the boost circuit 13 is used for connecting a dc power input, and may be connected to, for example, a photovoltaic power generation unit, receive the dc input of the photovoltaic power generation unit, boost the dc input to a preset reference voltage through the boost circuit 13, and transmit the boosted dc input to the bus 11. The battery 14 is used for storing energy to provide uninterrupted power supply for the load, and the fan 15 can be used for heat dissipation of the UPS.
The UPS further includes a control unit and a detection unit (not shown in fig. 1), and the control unit can control the operating states of the above-mentioned constituent units, and the detection unit can detect the voltage and current of each line of the UPS.
As shown in fig. 1, the energy discharge circuit 16 is designed in the UPS, so that when reverse-flow energy occurs in a UPS bus, the reverse-flow energy can be discharged to prevent the bus voltage from rising and triggering high-voltage protection.
The UPS provided by the embodiment of the invention can be applied to the UPS, the UPS is provided with the energy discharge circuit, and the discharge of the reverse irrigation energy of the UPS can be realized by controlling the energy discharge circuit.
Referring to fig. 2, it shows a flowchart of an implementation of a method for bleeding UPS back-irrigation energy according to an embodiment of the present invention, and details are described below with reference to fig. 1 and fig. 2:
in step 201, it is determined whether the UPS is back-charged.
In the embodiment of the invention, firstly, whether the UPS generates energy reverse flow needs to be judged, for example, when the bus voltage of the UPS is detected to be continuously increased in a short time, the UPS is judged to generate energy reverse flow; alternatively, the voltage and current of the inverter 12 may be monitored for occurrence of a reverse direction, and when the reverse direction occurs (for example, the current flowing from the port B to the bus 11 through the inverter 12), it is determined that the UPS is performing energy reverse-charging.
Optionally, in order to more accurately determine the UPS energy back-flow, step 201 may include:
detecting a bus voltage of the UPS;
detecting whether a reverse current occurs in an inverter of the UPS;
and if the voltage difference of the bus voltage of the UPS in two adjacent switching periods of the UPS is larger than the preset voltage difference, and the inverter generates reverse current, judging that the UPS generates energy reverse flow.
In this embodiment, the inverter 12 of the UPS may include a compound fully-controlled voltage-driven power semiconductor device IGBT (insulated Gate Bipolar transistor) composed of a Bipolar transistor and an insulated Gate field effect transistor, where the switching period may refer to a switching period of the IGBT device, and if a voltage difference of a bus voltage in two adjacent switching periods is greater than a preset voltage difference, it indicates that the bus voltage has a large change, and at this time, if a reverse current (a current reversely input to the bus through the inverter) of the inverter is detected, it is determined that the UPS has energy reverse-flowing.
Specifically, the detection may be implemented by a voltage detection unit or a current detection unit of the UPS.
In step 202, if the UPS is back-charged, the energy bleeding circuit of the UPS is controlled to be conducted with the bus of the UPS, and the designated component of the UPS is controlled to perform a predetermined energy consumption operation.
In the embodiment of the invention, when the UPS is judged to generate energy reverse filling, the energy discharge circuit can be controlled to be communicated with the bus, and the reverse filling energy is discharged through the energy discharge circuit.
In addition, in the embodiment of the invention, when the UPS is judged to generate energy reverse irrigation, the designated part of the UPS can be controlled to execute the preset energy consumption action, so that on one hand, the reverse irrigation energy can be effectively utilized, and on the other hand, the consumption/discharge of the reverse irrigation energy can be further accelerated.
Optionally, as shown in fig. 1, the energy bleeding circuit 16 may include a bleeding switch 161 and a bleeding resistor 162, and the bleeding resistor 162 is connected to the bus 11 of the UPS through the bleeding switch 161.
The controlling the energy discharge circuit of the UPS to be conductive with the bus of the UPS comprises: controlling the bleed switch to close to conduct the energy bleed circuit with a bus of the UPS;
the controlling the energy discharge circuit to disconnect from the bus comprises: and controlling the bleeder switch to be opened so as to disconnect the energy bleeder circuit from the bus.
In the embodiment of the invention, when the bleeder switch is closed, the bus is conducted with the bleeder resistor, the energy reversely poured on the bus can be transmitted to the bleeder resistor and consumed on the bleeder resistor, for example, the bleeder resistor can consume the energy reversely poured in a heating mode.
In other embodiments, the bleeder resistor may be replaced by another energy consuming device, which is not described herein.
In the embodiment of the invention, the energy discharge circuit and the designated part of the UPS are controlled to execute the preset energy consumption action, so that the discharge of the reverse irrigation energy can be realized in a short time, and the reverse irrigation energy is rapidly reduced to the safety range.
It should be noted that the bleeder resistor can be selected for use in a flexible way according to the output power of the UPS, and when the output power is large, the bleeder resistor with a large resistance value can be configured for the UPS, and the larger the resistance value of the bleeder resistor is, the better the energy bleeding effect is.
In step 203, when the conduction time of the energy bleeding circuit and the bus reaches a preset duration, or it is detected that the reverse energy of the UPS is smaller than a preset value, the energy bleeding circuit is controlled to be disconnected from the bus.
In the embodiment of the invention, after the energy reversely poured on the bus is consumed, the discharge resistor may continue to consume the normal power supply energy of the UPS, so that the energy discharge circuit may be controlled to be disconnected from the bus when the conduction time of the energy discharge circuit and the bus reaches the preset time. The preset duration can be flexibly set according to the actual situation.
In addition, the energy leakage circuit can be controlled to be disconnected with the bus by detecting the reverse irrigation energy of the UPS when the reverse irrigation energy is smaller than a preset value, so that the energy leakage circuit is prevented from being consumed. The back-flow energy can be realized by monitoring the bus voltage.
According to the invention, by judging whether the UPS generates energy reverse irrigation or not, when the UPS generates energy reverse irrigation, the energy release circuit of the UPS is controlled to be communicated with the bus, and the energy released to the bus by the energy release circuit is consumed; moreover, when the conduction time of the energy release circuit and the bus reaches a preset time or the reverse irrigation energy is detected to be smaller than a preset value, the energy release circuit and the bus can be controlled to be disconnected; therefore, the energy release circuit is utilized to achieve the purpose of releasing and consuming the energy reversely poured to the bus, the bus can be prevented from being reversely poured to a high-voltage protection state to generate power supply interruption, and the energy release circuit is timely disconnected after the reversely poured energy is reduced, so that the energy release circuit cannot consume the normal power supply energy of the UPS.
Fig. 3 shows another implementation flowchart of the UPS reverse-charging energy draining method provided by the embodiment of the present invention, which is detailed as follows:
in step 301, judging whether the UPS generates energy reverse irrigation;
in step 302, if the UPS has energy back-flow, controlling an energy discharge circuit of the UPS to be conducted with a bus of the UPS;
in step 303, when the conduction time between the energy discharging circuit and the bus reaches a preset duration, or it is detected that the reverse energy of the UPS is smaller than a preset value, the energy discharging circuit is controlled to be disconnected from the bus.
In this embodiment, the steps 301 to 303 may refer to the steps 201 to 203 in the embodiment shown in fig. 2, and are not described herein again. In the following steps, the control of a specific component of the UPS to perform a predetermined energy consuming action is further described by some embodiments.
In step 304, if the UPS is back-charged, the blower of the UPS is controlled to increase the rotational speed.
In the embodiment of the invention, the designated component may include the fan, when it is determined that the UPS has energy reverse irrigation, the rotation speed of the fan connected to the bus may be controlled to increase (for example, to 100% of the maximum rotation speed), and after the rotation speed of the fan increases, the consumed energy increases, so that the reverse irrigation energy on the bus may be discharged, in addition, the reverse irrigation energy is effectively utilized, and the operating temperature of the UPS may be effectively reduced after the rotation speed of the fan increases.
When the bus voltage is detected to be recovered to be normal, the rotating speed of the fan can be controlled to be recovered to a normal range.
Optionally, in step 305, if the UPS has energy back-flow, the step-up circuit of the UPS is controlled to reduce the reference step-up voltage, where the step-up circuit is connected to the bus.
UPSs are typically configured with a boost circuit that is used to boost the voltage input to the bus (e.g., the dc supply of a conventional photovoltaic unit may be below 380 volts, and needs to be boosted to 380 volts by the boost circuit and input to the bus of the UPS) and stabilize it at a reference value (reference boost voltage VREF), which may be 380 volts, for example. In an embodiment of the present invention, the specifying component may include a voltage boost circuit, and when it is determined that the UPS is subjected to energy reverse-charging, the reference boost voltage VREF may be reduced, so that energy input by a supply power of the UPS is reduced, and all or part of the motor load is fed back to the reverse-charging energy on the bus as an energy provider, so as to offset energy corresponding to the reduced reference boost voltage. Meanwhile, the reference boost voltage of the boost circuit is reduced, so that the input of energy can be reduced, and the energy loss is reduced.
When the bus voltage is detected to be recovered to be normal, the reference boosted voltage can be controlled to be recovered to be a normal set value.
Optionally, in step 306, if the UPS has energy back-flow, the operating mode of the energy storage unit of the UPS is switched to a charging mode, so as to charge the energy storage unit by using energy back-flow to the bus.
In the embodiment of the present invention, the specifying component may further include an energy storage unit, and when it is determined that the UPS has energy reverse-flowing, the operating mode of the energy storage unit of the UPS may be switched to a charging mode to charge the energy storage unit, so as to store and effectively utilize the energy reversely-flowing to the bus.
The switching the operation mode of the energy storage unit of the UPS to the charging mode may include: and detecting the current working mode of an energy storage unit of the UPS, if the current working mode is a charging mode, keeping the working mode unchanged, and if the current working mode is a non-charging mode, switching the current working mode to the charging mode.
Optionally, the bleeding method further includes:
judging whether the energy storage unit is in an energy saturation state or not;
correspondingly, if the UPS has energy reverse flow, switching the working mode of the energy storage unit of the UPS to a charging mode to charge the energy storage unit with energy reversely flowing to the bus includes:
if the UPS generates energy reverse charging and the energy storage unit is not in an energy saturation state, the working mode of the energy storage unit of the UPS is switched to a charging mode so as to charge the energy storage unit by utilizing the energy reversely charged to the bus.
In this embodiment, through detecting the electric quantity of the energy storage unit, when the energy stored in the energy storage unit is not saturated, the working mode of the energy storage unit of the UPS is switched to the charging mode, so as to more accurately realize the discharge of the energy reversely charged to the bus.
In an embodiment, before the operating mode of the energy storage unit of the UPS is switched to the charging mode, if the current operating mode of the energy storage unit of the UPS is a non-charging mode, the current operating mode of the energy storage unit of the UPS is recorded, and when it is detected that the bus voltage returns to normal, the operating mode of the energy storage unit of the UPS is returned to the last recorded operating mode.
In one embodiment, whether the energy of the energy storage unit of the UPS is saturated may be monitored, and if the energy of the energy storage unit of the UPS is monitored to be saturated, the operation mode of the energy storage unit of the UPS may be switched to the non-charging mode.
Above-mentioned optional embodiment can choose for use according to actual need, and the cooperation energy bleeder circuit realizes the discharge of the energy of irritating backward, stabilizes the voltage of generating line, ensures UPS's normal work.
According to the invention, by judging whether the UPS generates energy reverse irrigation or not, when the UPS generates energy reverse irrigation, the energy release circuit of the UPS is controlled to be communicated with the bus, and the energy released to the bus by the energy release circuit is consumed; in addition, the designated part of the UPS is controlled to execute a preset energy consumption action, namely, the part of the UPS is utilized to realize the effective utilization of the reverse irrigation energy on one hand, and on the other hand, the consumption of the reverse irrigation energy can be further accelerated; and when the conduction time of the energy release circuit and the bus reaches the preset duration or the reverse filling energy is detected to be smaller than the preset value, the energy release circuit can be controlled to be disconnected with the bus, so that the energy release circuit is timely disconnected after the reverse filling energy is reduced, and the energy release circuit can not consume the normal power supply energy of the UPS.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
The following are embodiments of the apparatus of the invention, reference being made to the corresponding method embodiments described above for details which are not described in detail therein.
Fig. 4 is a schematic structural diagram of a UPS reverse-charging energy discharge device provided by an embodiment of the present invention, and for convenience of description, only the parts related to the embodiment of the present invention are shown, which are detailed as follows:
as shown in fig. 4, the discharge device 4 for UPS reverse-charging energy includes: a judging unit 41, a first control unit 42 and a second control unit 43.
The judging unit 41 is used for judging whether the UPS generates energy reverse irrigation;
the first control unit 42 is configured to control an energy leakage circuit of the UPS to be conducted with a bus of the UPS and control a designated component of the UPS to perform a preset energy consumption action if the UPS is subjected to energy reverse-charging;
and the second control unit 43 is configured to control the energy bleeding circuit to be disconnected from the bus when the conduction time of the energy bleeding circuit and the bus reaches a preset duration, or when it is detected that the reverse energy of the UPS is smaller than a preset value.
Optionally, the energy bleeding circuit includes a bleeding switch and a bleeding resistor, and the bleeding resistor is connected to a bus of the UPS through the bleeding switch;
the first control unit 42 is specifically configured to control the bleeding switch to be closed so as to conduct the energy bleeding circuit with the bus of the UPS;
the second control unit 43 is specifically configured to control the bleeding switch to be opened so as to disconnect the energy bleeding circuit from the bus.
Optionally, the discharge device 4 for UPS reverse-charging energy further includes:
a bus voltage detection unit for detecting a bus voltage of the UPS;
a reverse current detection unit for detecting whether a reverse current occurs in an inverter of the UPS;
the determining unit 41 is specifically configured to determine that the UPS has energy reverse flow if a voltage difference between the bus voltage of the UPS in two adjacent switching cycles of the UPS is greater than a preset voltage difference, and the inverter has reverse current.
Optionally, the designated component includes a fan; the first control unit 42 is further configured to control the fan of the UPS to increase the rotation speed if the UPS is subjected to energy reverse irrigation.
Optionally, the designating unit further includes a boost circuit, and the first control unit 42 is further configured to control the boost circuit of the UPS to reduce a reference boost voltage if the UPS generates energy back-flow, where the boost circuit is connected to the bus.
Optionally, the designated component further includes an energy storage unit, and the first control unit 42 is further configured to, if the UPS has energy reverse flow, switch a working mode of the energy storage unit of the UPS to a charging mode, so as to charge the energy storage unit with energy reversely flowing to the bus.
Optionally, the discharge device 4 for UPS reverse-charging energy further includes:
the energy storage energy judging unit is used for judging whether the energy storage unit is in an energy saturation state;
correspondingly, the first control unit 42 is further specifically configured to, if the UPS is in energy reverse charging and the energy storage unit is not in an energy saturation state, switch the working mode of the energy storage unit of the UPS to a charging mode, so as to charge the energy storage unit by using energy reversely charged to the bus.
According to the invention, by judging whether the UPS generates energy reverse irrigation or not, when the UPS generates energy reverse irrigation, the energy release circuit of the UPS is controlled to be communicated with the bus, and the energy released to the bus by the energy release circuit is consumed; in addition, the designated part of the UPS is controlled to execute a preset energy consumption action, namely, the part of the UPS is utilized to realize the effective utilization of the reverse irrigation energy on one hand, and on the other hand, the consumption of the reverse irrigation energy can be further accelerated; and when the conduction time of the energy release circuit and the bus reaches the preset duration or the reverse filling energy is detected to be smaller than the preset value, the energy release circuit can be controlled to be disconnected with the bus, so that the energy release circuit is timely disconnected after the reverse filling energy is reduced, and the energy release circuit can not consume the normal power supply energy of the UPS.
Fig. 5 is a schematic diagram of a terminal according to an embodiment of the present invention. As shown in fig. 5, the terminal 5 of this embodiment includes: a processor 50, a memory 51 and a computer program 52 stored in said memory 51 and executable on said processor 50. The processor 50, when executing the computer program 52, implements the steps in the above-described various UPS back-fill energy bleeding method embodiments, such as steps 201 to 203 shown in fig. 2. Alternatively, the processor 50, when executing the computer program 52, implements the functions of the modules/units in the above-mentioned device embodiments, such as the functions of the units 41 to 43 shown in fig. 4.
Illustratively, the computer program 52 may be partitioned into one or more modules/units that are stored in the memory 51 and executed by the processor 50 to implement the present invention. The one or more modules/units may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution of the computer program 52 in the terminal 5. For example, the computer program 52 may be divided into a determination unit, a first control unit and a second control unit. The specific functions of each unit are as follows:
the judging unit is used for judging whether the UPS generates energy reverse irrigation;
the first control unit is used for controlling an energy discharge circuit of the UPS to be conducted with a bus of the UPS and controlling a specified component of the UPS to execute a preset energy consumption action if the UPS generates energy reverse irrigation;
and the second control unit is used for controlling the energy discharge circuit to be disconnected with the bus when the conduction time of the energy discharge circuit and the bus reaches a preset time length or the reverse flow energy of the UPS is detected to be smaller than a preset value.
The terminal 5 may be a control terminal of the UPS, and may be a computing device such as a desktop computer, a notebook, a palm computer, and a cloud server. The terminal may include, but is not limited to, a processor 50, a memory 51. It will be appreciated by those skilled in the art that fig. 5 is only an example of a terminal 5 and does not constitute a limitation of the terminal 5 and may include more or less components than those shown, or some components in combination, or different components, for example the terminal may also include input output devices, network access devices, buses, etc.
The Processor 50 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 51 may be an internal storage unit of the terminal 5, such as a hard disk or a memory of the terminal 5. The memory 51 may also be an external storage device of the terminal 5, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card) and the like provided on the terminal 5. Further, the memory 51 may also include both an internal storage unit and an external storage device of the terminal 5. The memory 51 is used for storing the computer program and other programs and data required by the terminal. The memory 51 may also be used to temporarily store data that has been output or is to be output.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus/terminal and method may be implemented in other ways. For example, the above-described apparatus/terminal embodiments are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow of the method according to the embodiments of the present invention may also be implemented by a computer program, which may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method embodiments may be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain other components which may be suitably increased or decreased as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media which may not include electrical carrier signals and telecommunications signals in accordance with legislation and patent practice.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (9)
1. The method for discharging the reverse-irrigation energy of the UPS is characterized in that the front end of the UPS is connected with a photovoltaic power generation device, and the rear end of the UPS is connected with a load;
the method comprises the following steps:
judging whether the UPS generates energy reverse irrigation;
if the UPS generates energy reverse flow, an energy discharge circuit of the UPS is controlled to be conducted with a bus of the UPS, and a designated part of the UPS is controlled to execute a preset energy consumption action; the designated part comprises a fan and a booster circuit, the preset energy consumption action is consistent with the action type of the designated part in the normal work of the UPS, and the action sizes are different;
when the conduction time of the energy release circuit and the bus reaches a preset duration, or the fact that the reverse filling energy of the UPS is smaller than a preset value is detected, the energy release circuit is controlled to be disconnected with the bus;
the judging whether the UPS generates energy reverse irrigation comprises the following steps:
detecting a bus voltage of the UPS;
detecting whether a reverse current occurs in an inverter of the UPS;
and if the voltage difference of the bus voltage of the UPS in two adjacent switching periods of the UPS is larger than the preset voltage difference, and the inverter generates reverse current, judging that the UPS generates energy reverse flow.
2. The method of claim 1, wherein the energy bleed circuit comprises a bleed switch and a bleed resistor, the bleed resistor being connected to a bus of the UPS via the bleed switch;
the controlling the energy discharge circuit of the UPS to be conductive with the bus of the UPS comprises: controlling the bleed switch to close to conduct the energy bleed circuit with a bus of the UPS;
the controlling the energy discharge circuit to disconnect from the bus comprises: and controlling the bleeder switch to be opened so as to disconnect the energy bleeder circuit from the bus.
3. A method for bleeding UPS back-fill energy according to any of claims 1-2, wherein said controlling a designated component of the UPS to perform a predetermined energy drain action comprises:
and controlling a fan of the UPS to increase the rotating speed.
4. A method for bleeding UPS back-fill energy according to any of claims 1-2, wherein said controlling a designated component of the UPS to perform a predetermined energy drain action further comprises:
controlling a boost circuit of the UPS to reduce a reference boost voltage, wherein the boost circuit is connected to the bus.
5. A method for bleeding UPS back-fill energy according to any of claims 1-2, wherein said controlling a designated component of the UPS to perform a predetermined energy drain action further comprises:
and switching the working mode of the energy storage unit of the UPS to a charging mode so as to charge the energy storage unit by utilizing the energy reversely poured to the bus.
6. The method of bleeding UPS back-fill energy of claim 5, further comprising:
judging whether the energy storage unit is in an energy saturation state or not;
correspondingly, the switching the working mode of the energy storage unit of the UPS to the charging mode to charge the energy storage unit with energy reversely flowing to the bus includes:
and if the energy storage unit is not in an energy saturation state, switching the working mode of the energy storage unit of the UPS to a charging mode so as to charge the energy storage unit by utilizing the energy reversely poured to the bus.
7. The release device for the reverse irrigation energy of the UPS is characterized in that the front end of the UPS is connected with photovoltaic power generation equipment, and the rear end of the UPS is connected with a load;
the device comprises:
a bus voltage detection unit for detecting a bus voltage of the UPS;
a reverse current detection unit for detecting whether a reverse current occurs in an inverter of the UPS;
the judging unit is used for judging whether the UPS generates energy reverse irrigation; the judging unit is specifically configured to determine that the UPS has energy reverse charging if a voltage difference of a bus voltage of the UPS in two adjacent switching cycles of the UPS is greater than a preset voltage difference and a reverse current occurs in the inverter;
the first control unit is used for controlling an energy discharge circuit of the UPS to be conducted with a bus of the UPS and controlling a specified component of the UPS to execute a preset energy consumption action if the UPS generates energy reverse irrigation; the designated part comprises a fan and a booster circuit, the preset energy consumption action is consistent with the action type of the designated part in the normal work of the UPS, and the action sizes are different;
and the second control unit is used for controlling the energy discharge circuit to be disconnected with the bus when the conduction time of the energy discharge circuit and the bus reaches a preset time length or the reverse flow energy of the UPS is detected to be smaller than a preset value.
8. A terminal comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor when executing the computer program implements the steps of the method of bleeding UPS back-fill energy of any of claims 1 to 6 above.
9. A computer-readable storage medium, in which a computer program is stored, which, when being executed by a processor, carries out the steps of the method for bleeding off UPS back-fill energy according to any one of claims 1 to 6.
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