CN110970991A - Energy control method and energy control system - Google Patents

Energy control method and energy control system Download PDF

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Publication number
CN110970991A
CN110970991A CN201811160413.0A CN201811160413A CN110970991A CN 110970991 A CN110970991 A CN 110970991A CN 201811160413 A CN201811160413 A CN 201811160413A CN 110970991 A CN110970991 A CN 110970991A
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China
Prior art keywords
energy
power
module
load
power supply
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CN201811160413.0A
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张雪霁
冯金礼
熊立群
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Huawei Technologies Co Ltd
Shanghai Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN201811160413.0A priority Critical patent/CN110970991A/en
Publication of CN110970991A publication Critical patent/CN110970991A/en
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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
    • H02J9/061—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 DC powered loads
    • 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
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/28—Arrangements for balancing of the load in a network by storage of energy
    • H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

The application provides an energy control method and an energy control system, energy supply of a load is met by adding an energy storage module, redundancy of input commercial power capacity is avoided, and time and investment cost for replacing an input air interface switch and modifying a power supply cable are saved. The method in the embodiment of the application comprises the following steps: the energy control module monitors the power supply module to obtain energy parameter information; the energy control module determines whether the energy storage module supplies energy to the load or not according to the energy parameter information; if the energy storage module is determined to supply energy to the load, the energy control module controls the power supply module and the energy storage module to supply energy to the load; and if the energy storage module is determined not to supply energy to the load, the energy control module controls the power supply module to supply energy to the load.

Description

Energy control method and energy control system
Technical Field
The present disclosure relates to the field of energy, and particularly to an energy control method and an energy control system.
Background
With the large-scale deployment of the fifth generation (5G) sites, the power consumption of the 5G sites is more and more, and at the initial stage of capacity expansion of the 5G sites, when the input commercial power capacity of some 5G sites is at the power peak of the 5G sites, the power demand of the 5G sites may not be met; or, under the condition that the input mains power capacity is sufficient, the input mains current value required by the 5G station is greater than the derating current value of the input air interface switch, so that the input air interface switch is turned off, and the power requirement of the 5G station cannot be met.
The method for solving the problem of insufficient power requirement of the 5G station at present specifically comprises the following steps: when the input commercial power capacity is insufficient, the input commercial power capacity can be increased; when the input mains power capacity is enough but the derating current value of the input air interface switch is insufficient, the input air interface switch with the larger derating current value is replaced, and the power supply cable capable of bearing the larger derating current value is replaced.
However, in the initial stage of the 5G site deployment, for a scenario that the input mains power capacity is slightly insufficient or the input mains power capacity is sufficient but the derating current value of the input air interface switch is insufficient, if the input mains power capacity is increased, a larger redundancy of the input mains power capacity is caused; if the input air interface switch is replaced and the power supply cable is reconstructed, the problems of high reconstruction cost, long period and low investment return rate exist.
Disclosure of Invention
The application provides an energy control method and an energy control system, energy supply of a load is met by adding an energy storage module, redundancy of input commercial power capacity is avoided, and time and investment cost for replacing an input air interface switch and modifying a power supply cable are saved.
The first aspect of the present application provides an energy control method, which is applied to an energy control system, the energy control system includes a power supply module, an energy control module and an energy storage module, an input end of the power supply module is connected to a mains power grid through an input air interface switch, an output end of the power supply module is connected to a load, the energy control module is connected to the power supply module and the energy storage module, and the energy control method includes: the energy control module monitors the power supply module to obtain energy parameter information; the energy control module determines whether the energy storage module supplies energy to the load or not according to the energy parameter information; if the energy storage module is determined to supply energy to the load, the energy control module controls the power supply module and the energy storage module to supply energy to the load; and if the energy storage module is determined not to supply energy to the load, the energy control module controls the power supply module to supply energy to the load. The energy control module monitors the power supply module to obtain energy parameter information of the power supply module, determines whether the energy storage module supplies energy to the load according to the energy parameter information, controls the power supply module and the energy storage module to supply energy to the load when the energy control module determines that the energy storage module does not supply energy to the load, and only needs to control the power supply module to supply energy to the load when the energy control module determines that the energy storage module does not supply energy to the load, because of the energy storage module, when the peak power of the power demand of the load exceeds the input commercial power capacity due to load expansion or the input commercial power current value exceeds the derating current value of the input air interface switch, so that the energy storage module can supply energy to the load together with the power supply module, compared with the current solution, the power capacity of the input commercial power does not need to be increased, the input air interface switch and the power supply cable do not need to be replaced, the load capacity expansion is supported, meanwhile, the redundancy of the input commercial power capacity is avoided, and the time and the investment cost for replacing the input air interface switch and the power supply cable are saved.
In a first possible implementation manner, in combination with the first aspect of the present application, the energy parameter information includes an input mains current value,
the energy control module determines whether the energy storage module supplies energy to the load according to the energy parameter information, and the method comprises the following steps:
the energy control module obtains the value of the input commercial power current according to the energy parameter information; the energy control module judges whether the current value of the input commercial power is larger than or equal to a preset current value, and the preset current value is preset according to the derating current value of the input air interface switch; when the value of the input mains current is greater than or equal to the preset current value, the energy control module determines that the energy storage module supplies energy to the load; when the value of the input mains current is smaller than the preset current value, the energy control module determines that the energy storage module does not supply energy to the load. Analyzing the obtained energy parameter information by the energy control module to obtain the input commercial power current value IinJudging the input commercial power current value IinWhether or not it is greater than or equal to the preset current value IthPreset current value IthAccording to the preset derating current value of the input air interface switch, the derating current value is obtained by assuming that the input air interface switch is deratedThe maximum current value of the value is ImaxRepresents the input commercial power current value IinIf greater than or equal to ImaxThe input air interface switch is disconnected, and considering that the energy storage module has a certain time delay when being connected to supply energy, IinMay be instantaneously higher than ImaxTherefore to ensure IinOvershoot not exceeding ImaxIt is necessary to increase the current fluctuation amount △ I, therefore Ith＝Imax- △ I when IinGreater than or equal to IthWhen the input air gap switch is disconnected, the energy supply of the load is influenced, but if I is connectedinIs limited tothIf the power requirement of the load cannot be met, determining that the energy storage module is required to supply energy; when I isinIs less than IthAnd then, the power supply module can meet the power requirement of the load, and the energy storage module is determined not to be needed for supplying energy at the moment. The method specifically illustrates how to determine whether the energy storage module is required to supply energy according to the value of the power-on-market current.
With reference to the first possible implementation manner of the first aspect of the present application and the second possible implementation manner, in the second possible implementation manner, the energy control module controls the power supply module and the energy storage module to supply energy to the load, including: the energy control module controls the power supply module to supply energy to the load according to the preset current value; if the power requirement of the load is greater than the output power of the power supply module, the energy control module controls the energy storage module to supply energy to the load. On the basis of a first possible implementation manner of the first aspect, ininGreater than or equal to IthWhen the power supply is started, the energy control module controls the input current value of the power supply module to be IthDue to the output power P of the power supply modulethCalculation formula Pth＝Ith*Uin*η，UinFor inputting the mains voltage value, it can be obtained by monitoring η the minimum value of the full load efficiency of the power supply module, and η the specific value is determined according to the production process of the power supply module and is not described herethThe calculation formula can determine PthAnd IthIs in a one-to-one correspondence. Then PthAs is known, if the power demand of the load is greater than that of the power sourceP of power supply modulethWhen the power demand of the load exceeds PthThe energy storage module is controlled by the energy control module to provide the load. In practical application, the energy storage module is only a battery physically, the only controllable one is output voltage, then the energy control module controls the energy storage module to supply energy, and actually, the output voltage value of the energy storage module exceeds the voltage value of a power supply cable connected to a load by adjusting the output voltage value of the energy storage module, so that electric energy can be released to the load. Then power supply module and energy storage module just can satisfy the power demand of load for the load energy supply simultaneously, just need not change input air interface switch and improve the preset current value, also need not reform transform the power supply cable.
With reference to the first aspect of the present application, in a third possible implementation manner, the energy parameter information includes a power output power value, and the determining, by the energy control module, whether the energy storage module supplies energy to the load according to the energy parameter information includes: the energy control module obtains a power supply output power value according to the energy parameter information; the energy control module judges whether the power output power value of the power supply is larger than or equal to a preset power value, and the preset power value is preset according to the de-rated power value of the input air interface switch; when the power supply output power value is greater than or equal to the preset power value, the energy control module determines that the energy storage module supplies energy to the load; when the power output power value is smaller than the preset power value, the energy control module determines that the energy storage module does not supply energy to the load. The energy control module analyzes the energy parameter information obtained by the monitoring unit to obtain a power output power value PinThe control unit judges PinWhether it is greater than or equal to the preset power value PthPreset power value PthThe derating power value is preset according to the derating power value of the input air interface switch, and the derating power value is generally calculated by the derating minimum current value and the derating minimum voltage value of the input air interface switch and represents PinIf greater than or equal to PthThe input air-interface switch will be open, which will affect the load power supply, but if P is usedinLimited to PthThe energy control module determines that the energy storage module is required to supply energy at the moment; when P is presentinLess than PthAnd then the power supply module can meet the power requirement of the load, and the control unit determines that the energy storage module is not needed for supplying energy. It is specifically described how to determine whether the energy storage module is required to supply energy according to the power output value of the power supply.
With reference to the third possible implementation manner of the first aspect of the present application, in a fourth possible implementation manner, the controlling, by the energy control module, the power supply module and the energy storage module to supply energy to the load includes: the energy control module controls the power supply module to supply energy to the load according to the preset power value; if the power requirement of the load is greater than the output power of the power supply module, the energy control module controls the energy storage module to supply energy to the load. In a third possible implementation manner of the first aspect, after the energy control module determines that the energy storage module supplies energy to the load, the energy control module supplies energy to the load according to PthControlling the power supply module to supply power to the load, and if the power demand of the load is greater than P of the power supply modulethWhen the power demand of the load exceeds PthThe energy storage module is controlled by the energy control module to provide the load. The energy storage module is used for storing the input commercial power value, the input air interface switch is connected with the power supply module, the power supply module is connected with the energy storage module, the energy storage module is connected with the power supply module, the energy storage module is connected with the energy storage module, and the input commercial power value is greater than or equal to the preset power value.
In combination with any one of the first aspect to the fourth possible implementation manner of the first aspect, in a fifth possible implementation manner, the energy storage module is a physical module providing hybrid energy storage, and the physical module includes any one of a super capacitor battery, a lithium battery, or a battery with cyclic backup power.
With reference to the fifth possible implementation manner of the first aspect of the present application, in a sixth possible implementation manner, the energy control system further includes a power backup module, and the method further includes: when the energy control module monitors that the power supply module cannot supply energy to the load, the energy control module controls the preparing module to supply energy to the load. If the input air interface switch is disconnected, the mains supply power grid is in power failure or the power supply module is in power failure, the power supply module cannot supply power to the load, so that the power supply of the load is ensured, a standby power module needs to be added, when the monitoring unit monitors that the power supply module cannot supply power to the load, the power control module controls the standby power module to supply power to the load, and after the power supply module recovers the power supply, the standby power module is controlled to be disconnected from the power supply.
A second aspect of the present application provides an energy control system comprising:
the power supply system comprises a power supply module, an energy control module and an energy storage module, wherein the input end of the power supply module is connected with a mains supply power grid through an input air interface switch, the output end of the power supply module is connected with a load, and the energy control module is connected with the power supply module and the energy storage module; the energy control module comprises a monitoring unit and a control unit; the monitoring unit is used for monitoring the power supply module to obtain energy parameter information; the control unit is used for determining whether the energy storage module supplies energy to the load or not according to the energy parameter information; if the energy storage module is determined to supply energy to the load, controlling the power supply module and the energy storage module to supply energy to the load; and if the energy storage module is determined not to supply energy to the load, controlling the power supply module to supply energy to the load. The monitoring unit of the energy control module monitors the power supply module to obtain energy parameter information of the power supply module, the control unit determines whether the energy storage module supplies energy to the load according to the energy parameter information, when the control unit determines that the energy storage module supplies energy to the load, the control unit controls the power supply module and the energy storage module to supply energy to the load, when the control unit determines that the energy storage module does not supply energy to the load, the control unit only needs to control the power supply module to supply energy to the load, because of the energy storage module, when the peak power of the power demand of the load exceeds the input commercial power capacity due to load expansion, or the input commercial power current value exceeds the derating current value of the input air interface switch, so that the power demand of the load can not be met, the energy storage module can supply energy to the load together with the power supply module, therefore, compared with the current solution, the input commercial power capacity does not need to be increased, the input air interface switch does not need to be replaced, the power supply cable does not need to be modified, the redundancy of the input commercial power capacity is avoided while the load capacity expansion is supported, and the time and the investment cost for replacing the input air interface switch and modifying the power supply cable are saved.
In a first possible implementation manner, in combination with the second aspect of the present application, the energy parameter information includes an input mains current value,
the control unit is also used for obtaining the value of the input commercial power current according to the energy parameter information; judging whether the current value of the input commercial power is larger than or equal to a preset current value, wherein the preset current value is preset according to the derating current value of the input air interface switch; when the value of the input mains current is greater than or equal to the preset current value, determining that the energy storage module supplies energy to the load; and when the value of the input mains current is smaller than the preset current value, determining that the energy storage module does not supply energy to the load. The control unit analyzes the energy parameter information obtained by the monitoring unit to obtain the value I of the input commercial power currentinThe control unit judges the input commercial power current value IinWhether or not it is greater than or equal to the preset current value IthPreset current value IthAccording to the preset derating current value of the input air interface switch, assuming that the maximum current value of the derating current value after the derating of the input air interface switch is ImaxRepresents the input commercial power current value IinIf greater than or equal to ImaxThe input air interface switch is disconnected, and considering that the energy storage module has a certain time delay when being connected to supply energy, IinMay be instantaneously higher than ImaxTherefore to ensure IinOvershoot not exceeding ImaxIt is necessary to increase the current fluctuation amount △ I, therefore Ith＝Imax- △ I when IinGreater than or equal to IthWhen the input air gap switch is disconnected, the energy supply of the load is influenced, but if I is connectedinIs limited tothThe power demand of the load is again not satisfiedIf so, the control unit determines that the energy storage module is required to supply energy; when I isinIs less than IthAnd then the power supply module can meet the power requirement of the load, and the control unit determines that the energy storage module is not needed for supplying energy. The method specifically illustrates how to determine whether the energy storage module is required to supply energy according to the value of the power-on-market current.
With reference to the first possible implementation manner of the second aspect of the present application, in a second possible implementation manner, the control unit is further configured to control the power supply module to supply power to the load according to a preset current value; and if the power demand of the load is greater than the output power of the power supply module, controlling the energy storage module to supply energy to the load. On the basis of the first possible embodiment of the second aspectinGreater than or equal to IthWhen the input current value of the power supply module is controlled to be I by the control unitthDue to the output power P of the power supply modulethCalculation formula Pth＝Ith*Uin*η，UinFor inputting the mains voltage value, it can be obtained by monitoring η the minimum value of the full load efficiency of the power supply module, and η the specific value is determined according to the production process of the power supply module and is not described herethThe calculation formula can determine PthAnd IthIs in a one-to-one correspondence. Then PthAs is known, if the power demand of the load is greater than P of the power supply modulethWhen the power demand of the load exceeds PthThe control unit controls the energy storage module to provide the load. In practical application, the energy storage module is only a battery physically, the only controllable one is output voltage, then the energy control module controls the energy storage module to supply energy, and actually, the output voltage value of the energy storage module exceeds the voltage value of a power supply cable connected to a load by adjusting the output voltage value of the energy storage module, so that electric energy can be released to the load. Then power supply module and energy storage module just can satisfy the power demand of load for the load energy supply simultaneously, just need not change input air interface switch and improve the preset current value, also need not reform transform the power supply cable.
In a third possible implementation manner, in combination with the second aspect of the present application, the energy parameter information includes a power output value,
the control unit is also used for obtaining the power output power value according to the energy parameter information; judging whether the power output power value of the power supply is greater than or equal to a preset power value, wherein the preset power value is preset according to the de-rated power value of the input air interface switch; when the power output power value is greater than or equal to the preset power value, determining that the energy storage module supplies energy to the load; and when the power supply output power value is smaller than the preset power value, determining that the energy storage module does not supply energy to the load. The control unit analyzes the energy parameter information obtained by the monitoring unit to obtain a power output power value PinThe control unit judges PinWhether it is greater than or equal to the preset power value PthPreset power value PthThe derating power value is preset according to the derating power value of the input air interface switch, and the derating power value is generally calculated by the derating minimum current value and the derating minimum voltage value of the input air interface switch and represents PinIf greater than or equal to PthThe input air-interface switch will be open, which will affect the load power supply, but if P is usedinLimited to PthIf the power requirement of the load cannot be met, the control unit determines that the energy storage module is required to supply energy; when P is presentinLess than PthAnd then the power supply module can meet the power requirement of the load, and the control unit determines that the energy storage module is not needed for supplying energy. It is specifically described how to determine whether the energy storage module is required to supply energy according to the power output value of the power supply.
In combination with the third possible embodiment of the second aspect of the present application, in the fourth possible embodiment,
the control unit is also used for controlling the power supply module to supply power to the load according to the preset power value; and if the power demand of the load is greater than the output power of the power supply module, controlling the energy storage module to supply energy to the load. In a third possible embodiment of the second aspect, after the control unit determines that the energy storage module supplies energy to the load, the control unit supplies energy according to PthControlling the power supply module to supply power to the load if the power demand of the load is greater than the power demandP of source power supply modulethWhen the power demand of the load exceeds PthThe control unit controls the energy storage module to provide the load. The energy storage module is used for storing energy required by the load, and the control unit is used for limiting the power of the power supply module to the preset power value, and the energy storage module is used for supplying energy to the load.
In combination with any one of the second aspect to the fourth possible implementation manner of the second aspect, in a fifth possible implementation manner, the energy storage module is a physical module providing hybrid energy storage, and the physical module includes any one of a super capacitor battery, a lithium battery, or a cycling backup battery.
In combination with the fifth possible implementation manner of the second aspect of the present application, in a sixth possible implementation manner, the energy control system further includes a power backup module, and the control unit is further configured to control the power backup module to supply power to the load when the monitoring unit monitors that the power supply module cannot supply power to the load. If the condition of input air interface switch disconnection, commercial power electric wire netting outage trouble or power supply module trouble appears, power supply module all can't be for the load energy supply, so in order to ensure the energy supply of load, just need increase a power module, when monitoring unit monitors that power supply module can't be for the load energy supply, the control unit control is equipped with the power module and is the load energy supply, after power supply module resumes the energy supply, control is equipped with the power module and breaks off the energy supply.
A third aspect of the present application provides a mains power supply system, comprising:
the energy control system comprises a mains power grid, an input air interface switch, a load and any one of the second to sixth possible implementation manners of the second aspect; the input end of a power supply module of the energy control system is connected with a mains supply power grid through an input air interface switch, the output end of the power supply module is connected with a load, and the energy control module is connected with the power supply module and the energy storage module.
Drawings
Fig. 1 is a schematic diagram of a commercial power supply system;
fig. 2 is a schematic diagram of an architecture having an energy control system in a utility power system;
FIG. 3 is a schematic flow chart diagram illustrating an embodiment of an energy control method of the present application;
FIG. 4 is a schematic flow chart diagram illustrating another embodiment of the energy control method of the present application;
FIG. 5 is a schematic flow chart illustrating the power control module controlling the power supply module and the energy storage module to supply power to the load according to the present application;
FIG. 6 is a schematic flow chart diagram illustrating yet another embodiment of the energy control method of the present application;
FIG. 7 is a system configuration diagram of an embodiment of the energy control system of the present application;
FIG. 8 is a system diagram of another embodiment of the energy control system of the present application;
fig. 9 is a system configuration diagram of an embodiment of the utility power supply system of the present application.
Detailed Description
The application provides an energy control method and an energy control system, which meet the requirement of a load energy supply step by adding an energy storage module, not only can not cause redundancy of input commercial power capacity, but also saves time and investment cost for replacing an input air interface switch and transforming a power supply cable.
The terms "upstream" and "downstream" appearing in the present application are used in some scenarios to describe the direction of data/information transmission, for example, the "upstream" direction is the direction of data/information transmission from the terminal device to the network side, the "downstream" direction is the direction of data/information transmission from the network side device to the terminal device, the "upstream" and "downstream" are used only to describe the direction, and the specific devices from which the data/information transmission starts and ends are not limited.
The term "and/or" appearing in the present application may be an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in this application generally indicates that the former and latter related objects are in an "or" relationship.
Various objects such as various messages/information/devices/network elements/systems/devices/actions/operations/flows/concepts may be named in the present application, but these specific names do not constitute limitations on related objects, and the named names may vary with factors such as scenes, contexts or usage habits, and understanding of technical meaning of related objects should be mainly determined from functions and technical effects embodied/executed in the technical solutions.
The terms "first," "second," and the like in the description and in the claims of the present application and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein. Moreover, the terms "comprises," "comprising," and any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or modules is not necessarily limited to those steps or modules explicitly listed, but may include other steps or modules not expressly listed or inherent to such process, method, article, or apparatus. The naming or numbering of the steps appearing in the present application does not mean that the steps in the method flow have to be executed in the chronological/logical order indicated by the naming or numbering, and the named or numbered process steps may be executed in a modified order depending on the technical purpose to be achieved, as long as the same or similar technical effects are achieved. The division of the modules presented in this application is a logical division, and in practical applications, there may be another division, for example, multiple modules may be combined or integrated into another system, or some features may be omitted, or not executed, and in addition, the shown or discussed coupling or direct coupling or communication connection between each other may be through some interfaces, and the indirect coupling or communication connection between the modules may be in an electrical or other similar form, which is not limited in this application. The modules or sub-modules described as separate components may or may not be physically separated, may or may not be physical modules, or may be distributed in a plurality of circuit modules, and some or all of the modules may be selected according to actual needs to achieve the purpose of the present disclosure.
First, a system architecture or scenario in which the present application is applied will be briefly described.
This application is applied to the commercial power supply system, and present commercial power supply system's framework is shown in fig. 1, including commercial power electric wire netting, input air interface switch, power supply module and load, and the commercial power electric wire netting provides the commercial power, and the commercial power is power frequency Alternating Current (AC), characterizes with three commonly used volume of AC: voltage, current and frequency, the common AC power frequency of countries in the world has two frequencies of 50Hz (hertz) and 60Hz, the civil AC voltage distribution is different from 100V (volt) to 380V, and the machine room generally introduces three-phase 380V and 50HZ commercial power as power supply; the input air interface switch is connected between a mains supply power grid and a circuit of a load energy supply module, is called an air circuit breaker, is one kind of circuit breaker, is an electric appliance which is very important in a low-voltage distribution network and an electric power dragging system, integrates control and multiple protection functions, can complete contact and breaking of the circuit, and can protect short circuit, severe overload, undervoltage and the like of the circuit or the load, has a derating protection mechanism, and the derating is that the derating is lower than a rated value of a device according to actual temperature rise, mechanical stress, power and the like, so a certain allowance is reserved to ensure that the device works in a reliable state, a specific derating coefficient refers to corresponding industrial standards or national standards, for example, the input air interface switch is provided with characteristics of derating current value and derating power value, as long as the mains supply current value exceeds the derating current value, the input air port switch can be automatically switched off, the derating current value is determined according to the rated current value and the derating coefficient of the input air port switch, and the rated current value is determined by the production process of the input air port switch; the power supply module plays a role in rectification and is used for converting mains supply so as to be used by a load.
Taking a commercial power supply scene of a fifth generation mobile communication technology (5G) as an example, a load is a 5G site, and with large-scale deployment of the 5G site, 5G users are more and more, and the amount of users accessing the 5G site is also more and more, for the 5G site, timely capacity expansion needs to be performed, so that services are provided for more users, and the power consumption of the 5G site is inevitably increased due to the capacity expansion. Before capacity expansion is performed on the 5G site, the input mains power capacity is guaranteed to meet the power requirement of the 5G site, but after capacity expansion is performed, peak power of the power requirement of some 5G sites may exceed the input mains power capacity, so that when the power requirement of the 5G site reaches the peak power, communication service cannot be normally provided; or before the 5G site is expanded, the input mains power capacity is guaranteed to exceed the power requirement of the 5G site, the magnitude of the current value of the input mains current is also guaranteed not to exceed the derating current value of the input air interface switch, but after the expansion, the input mains power capacity of some 5G sites still can meet the power requirement of the 5G site, but the input mains current value required by the 5G site exceeds the derating current value of the input air interface switch, according to the characteristics of the input air interface switch, when the input mains current value exceeds the derating current value of the input air interface switch, the input air interface switch is disconnected, and then the power requirement of the 5G site also cannot be met.
The current solutions are: after capacity expansion, increasing the capacity upper limit of the input commercial power capacity, thereby ensuring that the input commercial power capacity can exceed the power peak value of the power demand of the 5G station; or after capacity expansion, the input commercial power capacity can exceed the power peak value of the power demand of the 5G station, but the derating current value of the input air interface switch is insufficient, an input air interface switch with a larger derating current value is replaced, and a power supply cable capable of bearing a larger derating current value is replaced, so that the input commercial power current value can be increased, and the input commercial power capacity is increased. However, since the power demand of the current 5G site exceeds the input mains power capacity only at the power peak stage, the excess amount is small and the excess time is short, if the input mains power capacity is increased, the input mains power capacity becomes a large redundancy; and if the input air interface switch is replaced once and the power supply cable is reformed, the problems of high reforming cost, long period and low investment return rate exist. Then, after the 5G station capacity expansion, the energy supply problem after the 5G station capacity expansion can be solved without increasing the input commercial power capacity, or replacing the input air interface switch and modifying the power supply cable, which becomes a problem to be solved urgently.
An embodiment of the present application provides an energy control method and an energy control system for solving the above problems, where the energy control system is located in a mains power supply system, as shown in fig. 2, the energy control system includes a power supply module, an energy control module, and an energy storage module, an input end of the power supply module is connected to a mains power grid through an input air interface switch, an output end of the power supply module is connected to a load, and the energy control module is configured to control the power supply module and the energy storage module to supply energy to the load.
An energy control method applied to an energy control system in a mains power supply system is described below by way of an embodiment.
Referring to fig. 3, an embodiment of the present application provides an energy control method, including:
301. the energy control module monitors the power supply module to obtain energy parameter information;
in this embodiment, the energy control system is applied to the energy control system of the commercial power supply system shown in fig. 2, where the energy control system includes a power supply module, an energy control module, and an energy storage module, an input end of the power supply module is connected to a commercial power grid through an input air interface switch, an output end of the power supply module is connected to a load, and the energy control module monitors the power supply module to obtain energy parameter information. The energy parameter information may include values of input mains voltage, input mains current, or power output power, and may include other parameter information related to power supply of the power supply module. The specific way of acquiring the energy parameter information may be: the energy control module monitors the input end of the power supply module, namely monitors parameters of current and voltage transmitted to the power supply module by a mains supply power grid, and obtains input mains supply voltage and input mains supply current; or, the energy control module monitors the output end of the power supply module, that is, monitors the electric energy provided by the power supply module to the load, and obtains the power output power.
302. The energy control module determines whether the energy storage module supplies energy to the load or not according to the energy parameter information;
in this embodiment, after the energy control module monitors the power supply module to obtain the energy parameter information, since the energy parameter information is information of parameters related to energy supply of the power supply module, which represents the energy supply condition of the power supply module, the energy control module can determine whether the power demand of the load can be met when the power supply module supplies energy to the load according to the energy parameter information, and determine that the energy storage module needs to supply energy to the load when the power supply module does not supply energy to the load, so as to meet the power demand of the load, and execute step 303; in the event that the power demand of the load is met, it is determined that the energy storage module does not need to supply energy to the load, step 304 is performed.
303. The energy control module controls the power supply module and the energy storage module to supply energy to the load;
in this embodiment, when the energy control module determines that the energy storage module supplies energy to the load, the energy control module controls the power supply module and the energy storage module to supply energy to the load at the same time, so as to meet the power requirement of the load, the energy storage module is a physical module for providing energy storage hybrid, and the physical module includes any one of a super capacitor battery, a lithium battery or a circulating standby battery.
304. The energy control module controls the power supply module to supply energy to the load.
In this embodiment, when the energy control module determines that the energy storage module does not need to supply energy to the load, the energy control module only needs to control the power supply module to supply energy to the load.
In the embodiment of the application, an energy control module of an energy control system monitors a power supply module to obtain energy parameter information of the power supply module, determines whether the energy storage module supplies energy to a load according to the energy parameter information, when the energy control module determines that the energy storage module supplies energy to the load, the energy control module controls the power supply module and the energy storage module to supply energy to the load, and when the energy control module determines that the energy storage module does not need to supply energy to the load, the energy control module only needs to control the power supply module to supply energy to the load, because of the energy storage module, when a peak power of a power demand of the load exceeds an input commercial power capacity due to load expansion, or an input commercial power current value exceeds a derating current value of an input air interface switch, so that the power demand of the load cannot be met, the energy storage module and the power supply module can supply energy to the, therefore, compared with the existing solution, the method does not need to increase the power capacity of the input commercial power, replace the input air interface switch and modify the power supply cable, supports the capacity expansion of the load, does not cause the redundancy of the power capacity of the input commercial power, and saves the time and investment cost for replacing the input air interface switch and modifying the power supply cable.
In the embodiment shown in fig. 3, the energy parameter information of the power supply module may specifically be parameters of current and voltage transmitted to the power supply module by the monitoring utility grid, so as to obtain an input utility voltage and an input utility current; or, the power supply output power can be obtained by monitoring the electric energy provided by the power supply module to the load. For different energy parameter information, the energy control module determines whether the energy storage module supplies energy to the load in different ways, which will be described below by embodiments.
The energy parameter information comprises an input commercial power current value;
referring to fig. 4, an embodiment of the present application provides an energy control method, including:
401. the energy control module monitors the power supply module to obtain energy parameter information;
in this embodiment, the energy control module is applied to the energy control system of the utility power supply system shown in fig. 2, and monitors the input end of the power supply module, that is, monitors the parameters of the current and the voltage transmitted from the utility power grid to the power supply module, and the obtained energy parameter information includes the input utility power voltage and the input utility power current.
402. The energy control module obtains the value of the input commercial power current according to the energy parameter information;
in this embodiment, the energy control module analyzes the monitored energy parameter information to obtain the value of the input mains current.
403. The energy control module judges whether the value of the current of the input commercial power is larger than or equal to a preset current value;
in this embodiment, the energy control module determines whether the input mains current value is greater than or equal to a preset current value, the preset current value is preset according to a derating current value of the input air interface switch, and it is assumed that a maximum current value of the derating current value after derating the input air interface switch is ImaxRepresents the input commercial power current value IinIf greater than or equal to ImaxThe input air interface switch is disconnected, and considering that the energy storage module has a certain time delay when being connected to supply energy, IinMay be instantaneously higher than ImaxTherefore to ensure IinOvershoot not exceeding ImaxThe current fluctuation amount △ I is increased to preset the current value Ith＝Imax- △ I when IinGreater than or equal to IthWhen the input air gap switch is disconnected, the energy supply of the load is influenced, but if I is connectedinIs limited tothIf the power demand of the load cannot be met, the energy storage module is required to supply energy, and step 404 is executed; when I isinIs less than IthThen, the power supply module can meet the power requirement of the load, and then the energy storage module is not needed to supply energy, and step 405 is executed;
404. the energy control module determines that the energy storage module supplies energy to the load;
in this embodiment, in step 403, the energy control module determines IinGreater than or equal toIn IthWhen the input air gap switch is disconnected, the energy supply of the load is influenced, but if I is connectedinIs limited tothThereafter, the power demand of the load is again not met, and it is determined that the energy storage module is required to supply energy to the load.
405. The energy control module determines that the energy storage module does not supply energy to the load;
in this embodiment, in step 403, the energy control module determines IinIs less than IthIt is determined that the energy storage module is not required to supply energy to the load.
406. The energy control module controls the power supply module and the energy storage module to supply energy to the load;
in this embodiment, after it is determined in step 404 that the energy storage module supplies energy to the load, the energy control module controls the power supply module and the energy storage module to supply energy to the load at the same time, and optionally, the manner that the energy control module controls the power supply module and the energy storage module to supply energy to the load at the same time is shown in fig. 5, and includes:
501. the energy control module controls the power supply module to supply energy to the load according to the preset current value;
in IinGreater than or equal to IthWhen the power supply is started, the energy control module controls the input current value of the power supply module to be IthDue to the output power P of the power supply modulethCalculation formula Pth＝Ith*Uin*η，UinFor inputting the mains voltage value, it can be obtained by monitoring η the minimum value of the full load efficiency of the power supply module, and η the specific value is determined according to the production process of the power supply module and is not described herethThe calculation formula can determine PthAnd IthIs in a one-to-one correspondence.
502. If the power requirement of the load is greater than the output power of the power supply module, the energy control module controls the energy storage module to supply energy to the load.
The energy control module controls the input current value of the power supply module of the power supply to be IthThen, the output power P of the power supply module is reducedthAnd IthIs in one-to-one correspondenceIs then PthAs is known, if the power demand of the load is greater than P of the power supply modulethWhen the power demand of the load exceeds PthThe energy storage module is controlled by the energy control module to provide the load. In practical application, the energy storage module is only a battery physically, the only controllable one is output voltage, then the energy control module controls the energy storage module to supply energy, and actually, the output voltage value of the energy storage module exceeds the voltage value of a power supply cable connected to a load by adjusting the output voltage value of the energy storage module, so that electric energy can be released to the load.
407. The energy control module controls the power supply module to supply energy to the load.
In this embodiment, when it is determined in step 405 that the energy storage module is not required to supply energy to the load, IinIs less than IthThe energy control module is according to Pth＝Iin*Uinη controls the power supply module to supply power to the load.
In the embodiment of the application, it is considered that when the input commercial power current value is greater than or equal to the preset current value, if the load is supplied with energy only through the power supply module, the input air interface switch is disconnected, the power supply module cannot supply energy to the load, but if the input commercial power current value is limited below the preset current value, the power requirement of the load cannot be met, then, energy is supplied to the energy storage module, the current when the energy control module supplies energy to the power supply module is limited at the preset current value, the part of the input commercial power current value exceeding the preset current value is provided by the energy storage module, then, the power supply module and the energy storage module supply energy to the load at the same time, the input air interface switch is not required to be replaced, the preset current value is increased, and a power supply cable.
And (II) the energy parameter information comprises a power supply output power value.
Referring to fig. 6, an embodiment of the present application provides an energy control method, including:
601. the energy control module monitors the power supply module to obtain energy parameter information;
in this embodiment, the energy control module is applied to the energy control system of the commercial power supply system shown in fig. 2, and monitors the output end of the power supply module, that is, monitors the electric energy provided by the power supply module to the load, so as to obtain the power output power.
602. The energy control module obtains a power supply output power value according to the energy parameter information;
in this embodiment, the energy control module analyzes the monitored energy parameter information to obtain the power output value.
603. The energy control module judges whether the power output power value is greater than or equal to a preset power value;
in this embodiment, the energy control module determines whether the power output value is greater than or equal to a preset power value, where the preset power value is preset according to a derating power value of the input air interface switch, the derating power value is generally obtained by calculating a derating minimum current value and a derating minimum voltage value of the input air interface switch, and it is assumed that the derating power value of the preset power value is PthDenotes the power supply output power value PinIf greater than or equal to PthThe input air-interface switch will be open, which will affect the load power supply, but if P is usedinLimited to PthIf the power demand of the load cannot be met, the energy storage module is required to supply energy, and step 604 is executed; when P is presentinLess than PthThen, the power supply module of the power supply can meet the power requirement of the load, and then the energy storage module is not needed to supply energy, and step 605 is executed;
604. the energy control module determines that the energy storage module supplies energy to the load;
in this embodiment, in step 603, the energy control module determines PinIf greater than or equal to PthAt this time, the input air gap switch will be turned off, which will affect the load power supply, but if P is setinLimited to PthThereafter, the power demand of the load is again not met, and it is determined that the energy storage module is required to supply energy to the load.
605. The energy control module determines that the energy storage module does not supply energy to the load;
in this embodiment, in step 603, the energy control module determines PinLess than PthIt is determined that the energy storage module is not required to supply energy to the load.
606. The energy control module controls the power supply module and the energy storage module to supply energy to the load;
in this embodiment, after it is determined in step 604 that the energy storage module supplies energy to the load, the energy control module controls the power supply module and the energy storage module to supply energy to the load at the same time, and optionally, the energy control module controls the power supply module and the energy storage module to supply energy to the load at the same time specifically: the energy control module controls the power supply module to supply energy to the load according to the preset power value; and if the power demand of the load is greater than the output power of the power supply module, controlling the energy storage module to supply energy to the load. In a third possible embodiment of the second aspect, after the control unit determines that the energy storage module supplies energy to the load, the control unit supplies energy according to PthControlling the power supply module to supply power to the load, and if the power demand of the load is greater than P of the power supply modulethWhen the power demand of the load exceeds PthThe control unit controls the energy storage module to provide the load.
607. The energy control module controls the power supply module to supply energy to the load.
In this embodiment, when it is determined in step 605 that the energy storage module is not required to supply energy to the load, PinLess than PthThe energy control module is according to PinAnd controlling the power supply module to supply power to the load.
In the embodiment of the application, it is considered that when the input mains power value is greater than or equal to the preset power value, if the load is only supplied with energy through the power supply module, the input air interface switch is disconnected, the power supply module cannot supply energy to the load, but if the input mains power value is limited below the preset power value, the power requirement of the load cannot be met, then, energy is supplied by the energy storage module, the power when the power supply module supplies energy is limited at the preset power value by the energy control module, the part of the input mains power value exceeding the preset power value is provided by the energy storage module, then, the power supply module and the energy storage module supply energy to the load at the same time, the power requirement of the load can be met, and the power capacity of the input mains power.
It should be noted that, because the preset power value is set according to the derating power value, and the derating power value is calculated from the derating minimum current value and the derating minimum voltage value of the input air interface switch, even if the energy supply of the energy storage module is increased, the situation that the current value exceeds the derating maximum current value is not caused, and the risk of the input air interface switch being turned off is avoided.
Optionally, the energy control system further includes a standby power module, and the energy control method further includes:
when the energy control module monitors that the power supply module cannot supply energy to the load, the energy control module controls the preparing module to supply energy to the load.
In the embodiment of the application, if the input air interface switch is disconnected, the power failure of the utility power grid or the power supply module fails, the power supply module cannot supply power to the load, so as to ensure normal power supply of the load, a standby power module needs to be added, when the power control module monitors that the power supply module cannot supply power to the load, the power control module controls the standby power module to supply power to the load, and after the power supply module recovers power supply, the standby power module is controlled to disconnect power supply.
The energy control method is explained in the above embodiment, and an energy control system to which the energy control method is applied is explained below by the embodiment.
Referring to fig. 7, an embodiment of the present application provides an energy control system, including:
the system comprises a power supply module 701, an energy control module 702 and an energy storage module 703, wherein the input end of the power supply module 701 is connected with a mains supply power grid through an input air interface switch, and the output end of the power supply module 702 is connected with a load;
the energy control module 702 includes a monitoring unit 7021 and a control unit 7022;
the monitoring unit 7021 is configured to monitor the power supply module to obtain energy parameter information;
the control unit 7022 is configured to determine whether the energy storage module 703 supplies energy to the load according to the energy parameter information;
the control unit 7022 is further configured to control the power supply module 701 and the energy storage module 703 to supply power to the load when it is determined that the energy storage module 703 supplies power to the load;
the control unit 7022 is further configured to control the power supply module 701 to supply power to the load when it is determined that the energy storage module 703 does not supply power to the load.
In this embodiment, the monitoring unit 7021 of the energy control module 702 monitors the power supply module 701 to obtain energy parameter information of the power supply module 701, the control unit 7022 determines whether the energy storage module 703 supplies energy to a load according to the energy parameter information, when the control unit 7022 determines that the energy storage module 703 supplies energy to the load, the control unit 7022 controls the power supply module 701 and the energy storage module 703 to supply energy to the load, and when the energy control module 702 determines that the energy storage module 703 does not need to supply energy to the load, the control unit 7022 only needs to control the power supply module 701 to supply energy to the load, due to the existence of the energy storage module 703, when a peak power of a power demand of the load exceeds an input commercial power capacity due to load expansion, or an input commercial power current value exceeds a derating current value of an input air interface switch, so that the power demand of the load cannot be satisfied, the energy storage module 703 and the power supply module 701 together supply, therefore, compared with the existing solution, the method does not need to increase the power capacity of the input commercial power, replace the input air interface switch and modify the power supply cable, supports the capacity expansion of the load, does not cause the redundancy of the power capacity of the input commercial power, and saves the time and investment cost for replacing the input air interface switch and modifying the power supply cable.
It should be noted that, in addition to monitoring the power supply module 701, the monitoring unit 7021 may also monitor information related to various environments (e.g., a fan frame, a power distribution cabinet, an air conditioner, etc.), when the monitoring unit 7021 is implemented specifically, the monitoring unit 7022 may be a device or equipment such as a sensor or a measurer, and when the monitoring unit 7021 is implemented specifically, the control unit 7022 may be an upper computer, where the upper computer refers to a computer that can directly issue an operation command, and is generally a Personal Computer (PC), a host computer, a master computer, or an upper computer, and displays various information changes (e.g., energy parameter information in this embodiment) on a screen thereof. If the control unit 7022 is an upper computer, the power supply module 701 and the energy storage module 703 may have a lower computer, which is generally a Programmable Logic Controller (PLC), a single chip microcomputer (single chip microcomputer), a slave computer, or a lower computer. The control command sent by the upper computer is firstly sent to the lower computer, and the lower computer interprets the control command into a corresponding time sequence signal to directly control the power supply module 701 and the energy storage module 703.
Optionally, in some embodiments of the present application, the energy parameter information comprises an input mains current value,
the control unit 7022 is further configured to obtain an input mains current value according to the energy parameter information;
the control unit 7022 is further configured to determine whether the input mains current value is greater than or equal to a preset current value, where the preset current value is preset according to a derating current value of the input air interface switch;
the control unit 7022 is further configured to determine that the energy storage module supplies energy to the load when the value of the input mains current is greater than or equal to the preset current value;
the control unit 7022 is further configured to determine that the energy storage module does not supply energy to the load when the value of the input mains current is smaller than the preset current value.
In this embodiment, the control unit 7022 analyzes the energy parameter information obtained by the monitoring unit 7021 to obtain the input commercial power current value IinControl unit 7022 determines input commercial power current value IinWhether or not it is greater than or equal to the preset current value IthPreset current value IthAccording to the preset derating current value of the input air interface switch, assuming that the maximum current value of the derating current value after the derating of the input air interface switch is ImaxRepresents the input commercial power current value IinIf greater than or equal to ImaxThe input air interface switch is disconnected, and considering that the energy storage module has a certain time delay when being connected to supply energy, IinMay be instantaneously higher than ImaxTherefore to isGuarantee IinOvershoot not exceeding ImaxIt is necessary to increase the current fluctuation amount △ I, therefore Ith＝Imax- △ I when IinGreater than or equal to IthWhen the input air gap switch is disconnected, the energy supply of the load is influenced, but if I is connectedinIs limited tothIf the power demand of the load cannot be met, the control unit 7022 determines that the energy storage module 703 is needed to supply energy; when I isinIs less than IthAt this time, the power supply module 701 may meet the power requirement of the load, and then the control unit 7022 determines that the energy storage module 703 is not needed to supply energy. It is specifically described how to determine whether the energy storage module 703 is required to supply energy according to the value of the incoming power current.
Alternatively, in some embodiments of the present application,
the control unit 7022 is further configured to control the power supply module 701 to supply power to the load according to the preset current value;
the control unit 7022 is further configured to control the energy storage module 703 to supply energy to the load if the power demand of the load is greater than the output power of the power supply module 701.
In this embodiment, referring to step 501 and step 502 of fig. 5 in detail, it is considered that when the value of the input mains current is greater than or equal to the preset current value, if the load is supplied with energy only through the power supply module 701, the input air interface switch is turned off, the power supply module 701 cannot supply energy to the load, but if the value of the input mains current is limited below the preset current value, and the power requirement of the load is not met, then the energy storage module 703 is required to supply energy, the control unit 7022 limits the input current value when the power supply module 701 supplies energy to the preset current value, because the output power of the power supply module 701 and the input current value are in a one-to-one correspondence relationship, the output power value is known, and the power requirement of the load exceeds the output power value, the control unit 7022 controls the energy storage module 703 to supply energy to the load, then, the power supply module 701 and the energy storage module 703 supply energy to the load at the same time, so that the power requirement of the load can be met, the input air interface switch does not need to be replaced to increase the preset current value, and a power supply cable does not need to be modified.
Optionally, in some embodiments of the present application, the energy parameter information includes a power output value,
the control unit 7022 is further configured to obtain a power output power value according to the energy parameter information;
the control unit 7022 is further configured to determine whether the power output value is greater than or equal to a preset power value, where the preset power value is preset according to a derated power value of the input air interface switch;
the control unit 7022 is further configured to determine that the energy storage module supplies energy to the load when the power output power value is greater than or equal to the preset power value;
the control unit 7022 is further configured to determine that the energy storage module does not supply energy to the load when the power output power value is smaller than the preset power value.
In this embodiment, the control unit 7022 analyzes the energy parameter information obtained by the monitoring unit 7021 to obtain the power output power value PinControl unit 7022 determines PinWhether it is greater than or equal to the preset power value PthPreset power value PthThe derating power value is preset according to the derating power value of the input air interface switch, and the derating power value is generally calculated by the derating minimum current value and the derating minimum voltage value of the input air interface switch and represents PinIf greater than or equal to PthThe input air-interface switch will be open, which will affect the load power supply, but if P is usedinLimited to PthIf the power demand of the load cannot be met, the control unit 7022 determines that the energy storage module 703 is needed to supply energy; when P is presentinLess than PthAt this time, the power supply module 701 may meet the power requirement of the load, and then the control unit 7022 determines that the energy storage module 703 is not needed to supply energy. It is specifically described how to determine whether the energy storage module 703 is required to supply energy according to the power output value of the power supply.
Alternatively, in some embodiments of the present application,
the control unit 7022 is further configured to control the power supply module 701 to supply power to the load according to the preset power value;
the control unit 7022 is further configured to control the energy storage module 703 to supply energy to the load if the power demand of the load is greater than the output power of the power supply module 701.
In this embodiment of the application, after the control unit 7022 determines that the energy storage module 703 supplies energy to the load, the control unit 7022 supplies energy according to PthControlling the power supply module 701 to supply power to the load, if the power demand of the load is greater than P of the power supply module 701thWhen the power demand of the load exceeds PthWill be controlled by the control unit 7022 to provide the load with the energy storage module. It is considered that when the input mains power value is greater than or equal to the preset power value, if the load is supplied with energy only through the power supply module 701, the input air interface switch is turned off, the power supply module 701 cannot supply energy to the load, but if the input mains power value is limited below the preset power value, and the power requirement of the load cannot be met, then the energy storage module 703 is required to supply energy, the control unit 7022 limits the power when the power supply module 701 supplies energy to the preset power value, and the portion, exceeding the preset power value, of the input mains power value is provided by the energy storage module 703, then the power supply module 701 and the energy storage module 703 supply energy to the load at the same time, and the power requirement of the load can be met, and the power capacity of the input mains power.
Optionally, as shown in fig. 8, in some embodiments of the present application, the energy control system further comprises a backup power module 801,
the control unit 7022 is further configured to control the standby power module 801 to supply power to the load when the monitoring unit monitors that the power supply module cannot supply power to the load.
In this embodiment of the application, if an input air interface switch is turned off, a power failure of a utility power grid or a failure of the power supply module 701 occurs, the power supply module 701 cannot supply power to a load, then to ensure power supply to the load, a power backup module 801 needs to be added, when the monitoring unit 7021 monitors that the power supply module 701 cannot supply power to the load, the control unit 7022 controls the power backup module 801 to supply power to the load, and after the power supply module 701 recovers power supply, the power backup module 801 is controlled to disconnect power supply to the load.
Referring to fig. 9, an embodiment of the present application provides a commercial power supply system, including:
a mains grid 901, an input air interface switch 902, a load 903 and an energy control system 904 shown in fig. 8;
an input end of a power supply module 701 of the energy control system 904 is connected to a commercial power grid 901 through an input air interface switch 902, an output end of the power supply module 701 is connected to a load 903, and the energy control method according to the embodiments shown in fig. 3, 4, and 6 is applied to the energy control system 904.
It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the 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 application.
The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should 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; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims (15)

1. An energy control method is applied to an energy control system, the energy control system comprises a power supply module, an energy control module and an energy storage module, the input end of the power supply module is connected with a mains supply power grid through an input air interface switch, the output end of the power supply module is connected with a load, the energy control module is connected with the power supply module and the energy storage module, and the energy control method comprises the following steps:
the energy control module monitors the power supply module to obtain energy parameter information;
the energy control module determines whether the energy storage module supplies energy to the load according to the energy parameter information;
if the energy storage module is determined to supply energy to the load, the energy control module controls the power supply module and the energy storage module to supply energy to the load;
if the energy storage module is determined not to supply energy to the load, the energy control module controls the power supply module to supply energy to the load.
2. The method of claim 1, wherein the energy parameter information comprises an input mains current value,
the energy control module determines whether the energy storage module supplies energy to the load according to the energy parameter information, and the method comprises the following steps:
the energy control module obtains an input commercial power current value according to the energy parameter information;
the energy control module judges whether the input commercial power current value is larger than or equal to a preset current value, and the preset current value is preset according to the derating current value of the input air interface switch;
when the value of the input mains current is greater than or equal to the preset current value, the energy control module determines that the energy storage module supplies energy to the load;
when the value of the input commercial power current is smaller than the preset current value, the energy control module determines that the energy storage module does not supply energy to the load.
3. The method of claim 2, wherein the energy control module controls the power supply module and the energy storage module to supply energy to the load, comprising:
the energy control module controls the power supply module to supply energy to the load according to the preset current value;
if the power requirement of the load is greater than the output power of the power supply module, the energy control module controls the energy storage module to supply energy to the load.
4. The method of claim 1, wherein the energy parameter information includes a power supply output power value,
the energy control module determines whether the energy storage module supplies energy to the load according to the energy parameter information, including:
the energy control module obtains a power supply output power value according to the energy parameter information;
the energy control module judges whether the power output power value is larger than or equal to a preset power value, and the preset power value is preset according to the de-rated power value of the input air interface switch;
when the power output power value is larger than or equal to the preset power value, the energy control module determines that the energy storage module supplies energy to the load;
when the power output power value is smaller than the preset power value, the energy control module determines that the energy storage module does not supply energy to the load.
5. The method of claim 4, wherein the energy control module controls the power supply module and the energy storage module to supply energy to the load, comprising:
the energy control module controls the power supply module to supply energy to the load according to the preset power value;
if the power requirement of the load is greater than the output power of the power supply module, the energy control module controls the energy storage module to supply energy to the load.
6. The method according to any one of claims 1-5, wherein the energy storage module is a physical module providing hybrid energy storage, and the physical module comprises any one of a super capacitor battery, a lithium battery or a battery with backup power.
7. The method of claim 6, wherein the energy control system further comprises a backup module, the method further comprising:
when the energy control module monitors that the power supply module can not supply energy to the load, the energy control module controls the standby power module to supply energy to the load.
8. An energy control system, comprising:
the energy storage system comprises a power supply module, an energy control module and an energy storage module, wherein the input end of the power supply module is connected with a mains supply power grid through an input air interface switch, the output end of the power supply module is connected with a load, and the energy control module is connected with the power supply module and the energy storage module;
the energy control module comprises a monitoring unit and a control unit;
the monitoring unit is used for monitoring the power supply module to obtain energy parameter information;
the control unit is used for determining whether the energy storage module supplies energy to the load according to the energy parameter information;
the control unit is further configured to control the power supply module and the energy storage module to supply energy to the load if it is determined that the energy storage module supplies energy to the load;
the control unit is further used for controlling the power supply module to supply power to the load if the energy storage module is determined not to supply power to the load.
9. The system of claim 8, wherein the energy parameter information comprises an input mains current value,
the control unit is also used for obtaining the value of the input commercial power current according to the energy parameter information;
the control unit is further configured to determine whether the input mains supply current value is greater than or equal to a preset current value, where the preset current value is preset according to a derating current value of the input air interface switch;
the control unit is further used for determining that the energy storage module supplies energy to the load when the value of the input mains current is greater than or equal to the preset current value;
the control unit is further used for determining that the energy storage module does not supply energy to the load when the value of the input mains current is smaller than the preset current value.
10. The system of claim 9,
the control unit is also used for controlling the power supply module to supply energy to the load according to the preset current value;
the control unit is further used for controlling the energy storage module to supply energy to the load if the power demand of the load is greater than the output power of the power supply module.
11. The system of claim 8, wherein the energy parameter information includes a power supply output power value,
the control unit is further used for obtaining a power supply output power value according to the energy parameter information;
the control unit is further configured to determine whether the power output power value is greater than or equal to a preset power value, where the preset power value is preset according to a de-rated power value of the input air interface switch;
the control unit is further used for determining that the energy storage module supplies energy to the load when the power supply output power value is greater than or equal to the preset power value;
the control unit is further configured to determine that the energy storage module does not supply energy to the load when the power output power value is smaller than the preset power value.
12. The system of claim 11,
the control unit is further used for controlling the power supply module to supply power to the load according to the preset power value;
the control unit is further used for controlling the energy storage module to supply energy to the load if the power demand of the load is greater than the output power of the power supply module.
13. The system according to any one of claims 8-12, wherein the energy storage module is a physical unit providing hybrid energy storage, and the physical unit comprises any one of a super capacitor battery, a lithium battery or a battery with backup power.
14. The system of claim 13, wherein the energy control system further comprises a backup power module,
the control unit is further used for controlling the standby power module to supply power to the load when the monitoring unit monitors that the power supply module cannot supply power to the load.
15. A mains power supply system, comprising:
a utility power grid, an input air interface switch, a load, and the energy control system of any one of claims 8-14;
the input end of a power supply module of the energy control system is connected with the commercial power grid through the input air interface switch, the output end of the power supply module is connected with the load, and the energy control module is connected with the power supply module and the energy storage module.
CN201811160413.0A 2018-09-30 2018-09-30 Energy control method and energy control system Pending CN110970991A (en)

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