CN113783191A - Communication base station and power supply control system and method thereof - Google Patents
Communication base station and power supply control system and method thereof Download PDFInfo
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- CN113783191A CN113783191A CN202111088525.1A CN202111088525A CN113783191A CN 113783191 A CN113783191 A CN 113783191A CN 202111088525 A CN202111088525 A CN 202111088525A CN 113783191 A CN113783191 A CN 113783191A
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- alternating current
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- storage battery
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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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
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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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/02—Circuit arrangements for ac mains or ac distribution networks using a single network for simultaneous distribution of power at different frequencies; using a single network for simultaneous distribution of ac power and of dc power
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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
- 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
Abstract
The application discloses power supply control system includes: an AC switch; a rectifier; a first switch; a first storage battery; a current direction limiting circuit; the controller is used for controlling the conduction of the alternating current switch and the first switch in the electricity utilization valley period so as to utilize alternating current to supply power for the alternating current load, and utilize direct current output by the rectifier to supply power for the direct current load and charge the first storage battery; in the peak period of the utilization level, the AC switch is controlled to be switched on, the first switch is switched off, so that the AC power is used for supplying power to the AC load, and the DC power output by the rectifier is used for supplying power to the DC load; and in the peak period of electricity utilization and the peak period of electricity utilization, the alternating current switch is controlled to be turned off so as to supply power to the alternating current load by utilizing the alternating current and supply power to the direct current load by utilizing the first storage battery. By the scheme, the peak clipping and valley filling of power utilization can be conveniently and effectively realized, and the power utilization cost is reduced. The application also discloses a communication base station and a power supply control method thereof, and the communication base station and the power supply control method have corresponding technical effects.
Description
Technical Field
The invention relates to the technical field of power utilization, in particular to a communication base station and a power supply control system and method thereof.
Background
The peak and valley difference exists in the electricity utilization condition of users, the peak clipping and valley filling system widely used at present is realized at the power grid side, namely the peak clipping and valley filling is carried out at the power grid side through technologies such as a bidirectional energy storage inverter, an energy management system, a battery management system and the like, but the system is relatively complex to implement and has relatively high cost.
Through the system of filling the valley of peak clipping, can reduce the power consumption cost, be difficult to cause the electric energy waste when the load is lower, also be favorable to avoiding the electric energy not enough condition when the load is higher.
In summary, how to more conveniently and effectively realize peak clipping and valley filling of power utilization is a technical problem that needs to be solved urgently by those skilled in the art at present.
Disclosure of Invention
The invention aims to provide a communication base station and a power supply control system and method thereof, which are used for conveniently and effectively realizing peak clipping and valley filling of power utilization.
In order to solve the technical problems, the invention provides the following technical scheme:
a power supply control system comprising:
the first end of the alternating current switch is used for receiving alternating current, and the second end of the alternating current switch is connected with the input end of the rectifier;
the rectifier is connected with the first end of the first switch and the direct current load through the output end;
the second end of the first switch is connected with the positive electrode of the first storage battery;
the first battery;
the current direction limiting circuit is used for only allowing current to flow from the input end of the current direction limiting circuit to the output end of the current direction limiting circuit;
the controller is used for controlling the alternating current switch and the first switch to be conducted during the electricity consumption valley period so as to utilize the alternating current to supply power for the alternating current load, and utilize the direct current output by the rectifier to supply power for the direct current load and charge the first storage battery; during the peak period of the utilization level, controlling the AC switch to be switched on, and switching off the first switch so as to supply power to the AC load by using the AC and supply power to the DC load by using the DC output by the rectifier; and in the peak period and the peak period of power utilization, the alternating current switch is controlled to be switched off so as to supply power to the alternating current load by using the alternating current and supply power to the direct current load by using the first storage battery.
Preferably, the method further comprises the following steps:
the first end of the second switch is connected with the output end of the rectifier, and the second end of the second switch is respectively connected with the anode of the second storage battery and the first end of the third switch;
the second battery;
a third switch having a second terminal connected to the input terminal of the current direction limiting circuit;
the controller is specifically configured to:
during the electricity consumption valley period, controlling the alternating current switch, and conducting the first switch and the second switch so as to utilize the alternating current to supply power for an alternating current load, and utilize the direct current output by the rectifier to supply power for the direct current load and charge the first storage battery and the second storage battery; in a peak period of the power utilization level, controlling the alternating current switch to be switched on, and switching off the first switch and the second switch so as to supply power to the alternating current load by using the alternating current and supply power to the direct current load by using the direct current output by the rectifier; the alternating current switch, the second switch and the third switch are controlled to be switched off in the peak electricity utilization period and the peak electricity utilization period so as to supply power to the alternating current load by using the alternating current and supply power to the direct current load by using the first storage battery; when the alternating current is abnormal and the residual electric energy of the first storage battery is higher than an electric energy threshold value, controlling the second switch and the third switch to be switched off so as to supply power to the direct current load by using the first storage battery; and when the alternating current is abnormal and the residual electric energy of the first storage battery is not higher than the electric energy threshold value, controlling the third switch to be conducted so as to supply power to the direct current load by using the second storage battery.
Preferably, the method further comprises the following steps:
a first detection circuit for detecting a current flowing through the ac switch and a voltage at an input terminal of the rectifier;
a second detection circuit for detecting a current flowing through the first switch and a terminal voltage of the first secondary battery;
a third detection circuit for detecting a current flowing through the second switch and a terminal voltage of the second secondary battery;
a fourth detection circuit for detecting a current flowing through the third switch;
the controller is further configured to: and transmitting the detection data of the first detection circuit, the second detection circuit, the third detection circuit and the fourth detection circuit to a control center.
Preferably, the controller is further configured to:
and when the power supply control system is determined to be in fault according to the detection data of the first detection circuit, the second detection circuit, the third detection circuit and the fourth detection circuit, controlling the on-off states of the alternating current switch, the first switch, the second switch and the third switch according to a preset fault processing rule.
Preferably, the controller is further configured to:
and when the power supply control system is determined to be recovered to be normal, controlling the states of the alternating current switch, the first switch, the second switch and the third switch according to a default mode based on a power utilization period.
Preferably, the current direction limiting circuit includes a first diode, an anode of the first diode is used as an input terminal of the current direction limiting circuit, and a cathode of the first diode is used as an output terminal of the current direction limiting circuit.
Preferably, the current direction limiting circuit further includes:
a fuse and a circuit breaker in series with the first diode.
Preferably, the electricity consumption valley period, the electricity consumption peak period and the electricity consumption level peak period are all determined based on a user electricity consumption curve.
A communications base station comprising a power supply control system as claimed in any preceding claim.
A power supply control method applied to a controller of a power supply control system according to any one of the above, comprising:
during the electricity consumption valley period, controlling the AC switch and the first switch to be conducted so as to utilize the AC to supply power for the AC load, and utilize the DC output by the rectifier to supply power for the DC load and charge the first storage battery;
during the peak period of the utilization level, controlling the AC switch to be switched on, and switching off the first switch so as to supply power to the AC load by using the AC and supply power to the DC load by using the DC output by the rectifier;
and in the peak period and the peak period of power utilization, the alternating current switch is controlled to be switched off so as to supply power to the alternating current load by using the alternating current and supply power to the direct current load by using the first storage battery.
By applying the technical scheme provided by the embodiment of the invention, peak clipping and valley filling can be conveniently realized by arranging the alternating current switch, the rectifier, the first switch, the first storage battery, the current direction limiting circuit and the controller, and the invention has the advantages of lower cost and high reliability. Specifically, during the power consumption valley period, because the generated energy is sufficient and the load is lower, this application can control AC switch and first switch and switch on to utilize the alternating current to supply power for AC load, and utilize the direct current of rectifier output to supply power for DC load and charge for first battery, first battery at this moment has played the effect of storing surplus electric energy promptly. And in the peak period of the power utilization level, the power generation amount is approximately equal to that of the load, at the moment, the AC switch is controlled to be switched on, the first switch is switched off, so that the AC load is supplied with power by using the AC, the DC load is supplied with power by using the DC output by the rectifier, and the first storage battery is not charged or discharged. At power consumption peak period and power consumption peak period, the load is higher, consequently, this application control ac switch turn-offs to utilize the alternating current to supply power for alternating current load, and utilize first battery to supply power for direct current load, also make the unnecessary electric energy of first battery storage at power consumption trough period before this obtain the release. To sum up, the scheme of this application can conveniently realize effectively that the peak clipping of power consumption fills in the millet, reduces the power consumption cost, avoids the waste and the not enough condition of electric energy effectively.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a power supply control system according to the present invention;
FIG. 2 is a schematic structural diagram of a power supply control system according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a current direction limiting circuit according to an embodiment of the present invention;
fig. 4 is a flowchart of an implementation of a power supply control method according to the present invention.
Detailed Description
The core of the invention is to provide a power supply control system, which can conveniently and effectively realize peak clipping and valley filling of power consumption, reduce power consumption cost and effectively avoid waste and insufficient conditions of electric energy.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a power supply control system according to the present invention, where the power supply control system may include:
an ac switch 10 having a first terminal for receiving ac power and a second terminal connected to an input terminal of the rectifier 20;
a rectifier 20 having an output terminal connected to a first terminal of the first switch 30 and a dc load, respectively;
a first switch 30 having a second terminal connected to the positive electrode of the first battery 40;
a first storage battery 40;
a current direction limiting circuit 60 having an input terminal connected to the positive electrode of the first battery 40 and an output terminal connected to the dc load, for allowing only a current to flow from the input terminal to the output terminal;
a controller 50 for controlling the ac switch 10 and the first switch 30 to be turned on during the power consumption valley period, so as to supply the ac load with ac power, and supply the dc load with dc power outputted from the rectifier 20 and charge the first battery 40; in the peak period of the utilization level, the alternating current switch 10 is controlled to be switched on, the first switch 30 is switched off, so that the alternating current is used for supplying power to the alternating current load, and the direct current output by the rectifier 20 is used for supplying power to the direct current load; the ac switch 10 is controlled to be turned off to supply the ac load with ac power and to supply the dc load with the first battery 40 during both the peak period and the peak period.
Specifically, in the present embodiment, the ac switch 10 may receive ac power and transmit the power to the input terminal of the rectifier 20. The alternating current may be, for example, 380V three-phase power or 220V single-phase power, and in other cases, specific parameters of the alternating current may be adjusted as needed without affecting the implementation of the present invention.
When the alternating current is normal, namely abnormal conditions such as power failure and the like do not occur, the alternating current can directly supply power to the alternating current load.
During the power consumption valley period, the power generation amount is sufficient and the load is low, so the controller 50 of the present application controls the ac switch 10 and the first switch 30 to be turned on. When the ac switch 10 is turned on, the rectifier 20 can rectify the received ac power, so that the dc power output from the rectifier 20 can supply power to the dc load. Also, since the first switch 30 is turned on, the dc power outputted from the rectifier 20 can charge the first battery 40 until the first battery 40 is fully charged.
In addition, since the output voltage of the rectifier 20 is higher than the terminal voltage of the first battery 40, the first battery 40 is charged only during the electricity consumption valley period and is not discharged. The same is true in the subsequent embodiment of fig. 2, i.e., during the power consumption valley period, both the first battery 40 and the second battery 80 are only charged and not discharged.
It can be seen that during the power consumption valley period, the load is low due to the sufficient power generation amount, so that the electric energy of the dc load and the electric energy of the ac load are both derived from the ac power, and the first storage battery 40 is charged by the electric energy of the ac power, that is, the first storage battery 40 plays a role of storing the surplus electric energy.
During the peak period of the usage level, the power generation amount and the load are approximately equivalent, and therefore, the ac switch 10 is controlled to be turned on and the first switch 30 is controlled to be turned off, so that the first battery 40 is neither charged nor discharged. Specifically, when the ac switch 10 is turned on, the rectifier 20 may rectify the received ac power, and the dc power output by the rectifier 20 may supply power to the dc load. The first switch 30 is turned off, so that the dc power output from the rectifier 20 does not charge the first battery 40, and the first battery 40 does not discharge because the output voltage of the rectifier 20 is higher than the terminal voltage of the first battery 40.
It can be seen that during the peak period of the usage level, since the amount of power generation and the load are approximately equivalent, the electric power of both the direct current load and the alternating current load is derived from the alternating current, and the first storage battery 40 is neither charged nor discharged.
In the peak period of electricity utilization and the peak period of electricity utilization, the load is higher, therefore, no matter in the peak period of electricity utilization or the peak period of electricity utilization, the alternating current switch 10 is controlled to be switched off, and because the alternating current switch 10 is switched off, the alternating current only supplies power for the alternating current load at the moment. The first switch 30 may be turned off or on, and when the first switch 30 is turned off, the first battery 40 may supply power to the dc load through the current direction limiting circuit 60. When the first switch 30 is turned on, the first battery 40 may supply power to the dc load through the current direction limiting circuit 60 and/or the first switch 30. In practical applications, the first switch 30 is normally turned off during peak periods and peak periods.
It can be seen that during peak periods and peak periods, the ac loads are powered by ac power due to the high load, and the dc loads are powered by the first battery 40, i.e. the excess power stored by the first battery 40 during the valley periods is released.
In an embodiment of the present invention, referring to fig. 2, the method may further include:
a second switch 70 having a first end connected to the output end of the rectifier 20 and a second end connected to the positive electrode of the second battery 80 and the first end of the third switch 90, respectively;
a second battery 80;
a third switch 90 having a second terminal connected to the input terminal of the current direction limitation circuit 60;
the controller 50 is specifically configured to:
in the electricity consumption valley period, the alternating current switch 10, the first switch 30 and the second switch 70 are controlled to be switched on so as to supply power to the alternating current load by using the alternating current, supply power to the direct current load by using the direct current output by the rectifier 20 and charge the first storage battery 40 and the second storage battery 80; in the peak period of the utilization level, the alternating current switch 10 is controlled to be switched on, and the first switch 30 and the second switch 70 are both switched off, so that the alternating current load is supplied with power by utilizing the alternating current, and the direct current load is supplied with power by utilizing the direct current output by the rectifier 20; in the peak period and the peak period of the electricity utilization, the alternating current switch 10, the second switch 70 and the third switch 90 are controlled to be turned off so as to supply power to the alternating current load by using the alternating current and supply power to the direct current load by using the first storage battery 40; when the alternating current is abnormal and the residual electric energy of the first storage battery 40 is higher than the electric energy threshold value, controlling the second switch 70 and the third switch 90 to be turned off so as to supply power to the direct current load by using the first storage battery 40; when the alternating current is abnormal and the remaining power of the first storage battery 40 is not higher than the power threshold, the third switch 90 is controlled to be turned on to supply power to the direct current load using the second storage battery 80.
In this embodiment, a second battery 80, a second switch 70, and a third switch 90 are also provided.
In the power consumption valley period, as in the above embodiment, since the power generation amount is sufficient and the load is low, in this embodiment, the controller 50 controls the ac switch 10, the first switch 30 and the second switch 70 to be turned on. When the ac switch 10 is turned on, the rectifier 20 can rectify the received ac power, so that the dc power output from the rectifier 20 can supply power to the dc load. Further, since the first switch 30 and the second switch 70 are turned on, the dc power output from the rectifier 20 may charge the first battery 40 and the second battery 80 until the first battery 40 and the second battery 80 are fully charged.
It can be seen that in the embodiment of fig. 2, during the electricity consumption valley period, the load is low due to the sufficient amount of electricity generation, so that the electric energy of the direct current load and the electric energy of the alternating current load are both derived from the alternating current, and the first storage battery 40 and the second storage battery 80 are charged by the electric energy of the alternating current, namely, the first storage battery 40 and the second storage battery 80 play a role in storing the redundant electric energy. In addition, the third switch 90 may be turned on or off during the electricity consumption valley period, and since the output voltage of the rectifier 20 is higher than the terminal voltage of the second secondary battery 80, the second secondary battery 80 can be charged only without being discharged during the electricity consumption valley period regardless of whether the third switch 90 is turned on.
In the peak period of the usage level, the amount of power generation and the load are approximately equivalent, and therefore, in the embodiment of fig. 2, the ac switch 10 is controlled to be on, and both the first switch 30 and the second switch 70 are controlled to be off, so that the first storage battery 40 is neither charged nor discharged, and so that the second storage battery 80 is neither charged nor discharged. Specifically, when the ac switch 10 is turned on, the rectifier 20 may rectify the received ac power, and the dc power output by the rectifier 20 may supply power to the dc load. The first switch 30 is turned off, so that the dc power output from the rectifier 20 does not charge the first battery 40, and the first battery 40 does not discharge because the output voltage of the rectifier 20 is higher than the terminal voltage of the first battery 40. Likewise, since the second switch 70 is turned off, the dc power output from the rectifier 20 does not charge the second secondary battery 80 at this time, and since the output voltage of the rectifier 20 is higher than the terminal voltage of the second secondary battery 80, the second secondary battery 80 is not discharged regardless of whether the third switch 90 is turned on or not.
It can be seen that during the peak period of the usage level, since the amount of power generation and the load are approximately equivalent, the electric power of the dc load and the ac load are both derived from the ac power, and the first storage battery 40 and the second storage battery 80 are neither charged nor discharged.
In the peak period and the peak period, the load is high, so in the embodiment of fig. 2, the ac switch 10 is controlled to be turned off no matter in the peak period or the peak period, and the ac switch 10 is turned off, so that the ac power only supplies power to the ac load. The first switch 30 may be turned off or on, and when the first switch 30 is turned off, the first battery 40 may supply power to the dc load through the current direction limiting circuit 60. When the first switch 30 is turned on, the first battery 40 may supply power to the dc load through the current direction limiting circuit 60 and/or the first switch 30. In practical applications, the first switch 30 is normally turned off during peak periods and peak periods. The second switch 70 and the third switch 90 need to be turned off so that the second battery 80 is neither charged nor discharged during peak hours of electricity usage and during peak hours of electricity usage.
It can be seen that during the peak period and the peak period of the power consumption, the load is high, so the electric energy of the ac load is supplied by the ac current, and the dc load is supplied by the first storage battery 40, that is, the surplus electric energy stored by the first storage battery 40 during the valley period of the power consumption is released.
In the embodiment of fig. 1, if an ac power abnormality such as a power failure occurs, the dc load can be supplied with power only by the first battery 40, and if the first battery 40 is short of capacity, the dc load cannot be continuously supplied with power. In the embodiment of fig. 2, when the alternating current is abnormal and the remaining power of the first battery 40 is higher than the power threshold, which indicates that the remaining power of the first battery 40 is sufficient, the second switch 70 and the third switch 90 are controlled to be turned off, the first switch 30 may be turned off or turned on, the first battery 40 may supply power to the direct current load through the current direction limiting circuit 60 and/or the first switch 30, and in practical applications, the first switch 30 is usually set to be in an off state.
When the ac power is abnormal and the remaining power of the first battery 40 is not higher than the power threshold, which indicates that the remaining power of the first battery 40 is insufficient, the third switch 90 may be controlled to be turned on, so as to supply power to the dc load by using the second battery 80.
The specific circuit configuration of the current direction limiting circuit 60 can be set and adjusted according to actual requirements, for example, in an embodiment of the present invention, the current direction limiting circuit 60 can include a first diode D1, the anode of the first diode D1 is used as the input terminal of the current direction limiting circuit 60, and the cathode of the first diode D1 is used as the output terminal of the current direction limiting circuit 60. The current direction limiting circuit 60 is realized by the first diode D1, and has low cost and high reliability.
Further, in an embodiment of the present invention, referring to fig. 3, the current direction limiting circuit 60 may further include:
a fuse F1 and a circuit breaker K1 in series with a first diode D1.
In this embodiment, in order to improve the discharge safety when the first battery 40 and the second battery 80 are discharged by the current direction limiting circuit 60, a fuse F1 and a circuit breaker K1 are provided in series with the first diode D1 in the current direction limiting circuit 60. Fuse F1 can realize the short-circuit protection and the overload protection of circuit, and circuit breaker K1 can be used for the circuit to overhaul and cut off load circuit when maintaining, in addition, can also cut off the fault circuit when the anomaly appears, prevents that the accident from expanding, guarantees safe operation. In the embodiment of fig. 3, the circuit breaker K1 is disposed between the dc load and the positive electrode of the first battery 40, and in other embodiments, for example, the circuit breaker K1 may be disposed between the dc load and the negative electrode of the first battery 40, or, for example, two sets of contacts are disposed between the dc load and the positive electrode of the first battery 40 and between the dc load and the negative electrode of the first battery 40, so that the function of the circuit breaker K1 may be implemented, without affecting the implementation of the present invention.
This application needs according to the power consumption time interval, carries out the on-off control of each switch in the power supply control system, and in practical application, power consumption trough time interval, power consumption peak time interval and power consumption peak time interval can be the power consumption time interval that determines based on the user power consumption curve. In addition, because the daily user power utilization curves are not completely consistent, in practical application, each power utilization period can be determined by utilizing the long-term user power utilization curves. For example, in one particular scenario, after extensive data analysis, 23: 00-7: 00 as the electricity utilization valley period. And (3) mixing the following components: 00-11: 00, 13:00-17:00 and 22: 00-23: 00 as the used level peak period. Mixing 11:00-13:00 and 17: 00-19: 00 as peak hours of electricity usage. And (3) mixing the components of 19: 00-22: 00 as the power-on spike period.
In an embodiment of the present invention, the method may further include:
a first detection circuit for detecting a current flowing through the ac switch 10 and an input terminal voltage of the rectifier 20;
a second detection circuit for detecting a current flowing through the first switch 30 and a terminal voltage of the first secondary battery 40;
a third detection circuit for detecting a current flowing through the second switch 70 and a terminal voltage of the second secondary battery 80;
a fourth detection circuit for detecting a current flowing through the third switch 90;
the controller 50 is also configured to: and transmitting the detection data of the first detection circuit, the second detection circuit, the third detection circuit and the fourth detection circuit to a control center.
In this embodiment, the current flowing through the ac switch 10 and the voltage at the input terminal of the rectifier 20 are detected by the first detection circuit, the current flowing through the first switch 30 and the terminal voltage of the first battery 40 are detected by the second detection circuit, the current flowing through the second switch 70 and the terminal voltage of the second battery 80 are detected by the third detection circuit, and the current flowing through the third switch 90 is detected by the fourth detection circuit, so that the scheme of the present application can perform comprehensive monitoring on the power supply control system.
Also, the controller 50 may transmit the detection data to a control center, typically using wireless communication, so that the control center can perform real-time monitoring, statistics, and analysis based on the detection data. For example, the conditions of electric leakage, overcurrent, overvoltage and the like can be analyzed to trigger corresponding fault protection measures, and for example, the system power can be analyzed by using the detection data to assist in analyzing the power utilization condition of the user and the like.
Further, in an embodiment of the present invention, the controller 50 may be further configured to:
when the power supply control system is determined to be in fault according to the detection data of the first detection circuit, the second detection circuit, the third detection circuit and the fourth detection circuit, the on-off states of the alternating current switch 10, the first switch 30, the second switch 70 and the third switch 90 are controlled according to a preset fault processing rule.
In this embodiment, the controller 50 is directly utilized to analyze the detection data, and when determining that the power supply control system has a fault, the on-off states of the ac switch 10, the first switch 30, the second switch 70, and the third switch 90 are controlled according to the preset fault processing rule, for example, the fault branch is disconnected, so that a remote control center is not needed, the fault processing can be directly performed, the fault circuit is timely cut off, the accident expansion is prevented, and the safety of the circuit is guaranteed.
Of course, in practical applications, the controller 50 also supports the reception of remote commands from the control center, so that the control center can perform remote control of the respective switches.
Further, the controller 50 may be further configured to:
when it is determined that the power supply control system is returned to normal, the states of the ac switch 10, the first switch 30, the second switch 70, and the third switch 90 are controlled in a default mode based on the power use period.
The default mode based on the electricity usage period described here, that is, in the foregoing embodiment, the states of the first switch 30, the second switch 70, and the third switch 90 are controlled in accordance with the division of the electricity usage valley period, the electricity usage peak period, and the electricity usage peak period.
In the embodiment, when the power supply control system is determined to be recovered to be normal, the power supply control system can be automatically recovered, and the power failure time can be effectively shortened.
By applying the technical scheme provided by the embodiment of the invention, peak clipping and valley filling can be conveniently realized by arranging the alternating current switch 10, the rectifier 20, the first switch 30, the first storage battery 40, the current direction limiting circuit 60 and the controller 50, and the method is low in cost and high in reliability. Specifically, during the power consumption valley period, the load is low due to sufficient power generation amount, the ac switch 10 and the first switch 30 are controlled to be turned on, so as to supply power to the ac load by using the ac power, supply power to the dc load by using the dc power output by the rectifier 20, and charge the first storage battery 40, that is, the first storage battery 40 plays a role in storing the redundant power. During the peak period of the power consumption level, the power generation amount is approximately equal to the load, at this time, the ac switch 10 is controlled to be turned on, the first switch 30 is turned off to supply power to the ac load by using the ac power, and the dc load is supplied by using the dc power output from the rectifier 20, and the first battery 40 is neither charged nor discharged. During the peak period and the peak period of the power consumption, the load is high, so the ac switch 10 is controlled to be turned off by the present application, so as to supply power to the ac load by using the ac power, and supply power to the dc load by using the first storage battery 40, that is, the excess electric energy stored by the first storage battery 40 during the valley period of the power consumption is released. To sum up, the scheme of this application can conveniently realize effectively that the peak clipping of power consumption fills in the millet, reduces the power consumption cost, avoids the waste and the not enough condition of electric energy effectively.
Corresponding to the above embodiments of the power supply control system, an embodiment of the present invention further provides a communication base station, which may include the power supply control system in any of the above embodiments.
Considering that the standby power supply in the current communication base station usually mainly comprises lead-acid batteries, the percentage of the standby power supply is more than 80%, the number and the scale of the communication base stations are continuously increased, the demand of power supply service is continuously increased, old stock resources are effectively utilized, and the input cost of the power supply is reduced, which is one of important contents for the construction of the communication base stations.
In the scheme of the application, peak clipping and valley filling can be realized by matching the first storage battery 40 and the second storage battery 80 with corresponding switches, and the scheme can be effectively applied to a communication base station, so that old stock resources of the communication base station are effectively utilized, and the input cost of a power supply is reduced.
For a communication base station, the dc load may be an electric device with a rated voltage of 48V, for example, a communication device of the communication base station, such as an antenna, a BBU, an RRU, and the like, and the ac load may include a high-power device such as an air conditioner in a machine room. The first storage battery 40 and the second storage battery 80 can be lead-acid batteries, the nominal voltage of the lead-acid batteries is 2V, the rated capacity of the lead-acid batteries is 500Ah, the first storage battery 40 and the second storage battery 80 are respectively formed by connecting 24 lead-acid storage battery monomers in series to form a 48V/500Ah storage battery pack, and the electric quantity of the storage battery pack is 24 KWh.
Corresponding to the above embodiments of the communication base station and the power supply control system thereof, an embodiment of the present invention further provides a power supply control method, which can be applied to a controller of the power supply control system in any of the above embodiments, and includes:
step S401: in the electricity consumption valley period, the alternating current switch and the first switch are controlled to be conducted so as to supply power to the alternating current load by utilizing the alternating current, supply power to the direct current load by utilizing the direct current output by the rectifier and charge the first storage battery;
step S402: in the peak period of the utilization level, the AC switch is controlled to be switched on, the first switch is switched off, so that the AC power is used for supplying power to the AC load, and the DC power output by the rectifier is used for supplying power to the DC load;
step S403: and in the peak period of electricity utilization and the peak period of electricity utilization, the alternating current switch is controlled to be turned off so as to supply power to the alternating current load by utilizing the alternating current and supply power to the direct current load by utilizing the first storage battery.
In a specific embodiment of the present invention, step S401 specifically includes:
in the electricity consumption valley period, controlling the alternating current switch, the first switch and the second switch to be conducted so as to utilize alternating current to supply power for the alternating current load, and utilize direct current output by the rectifier to supply power for the direct current load and charge the first storage battery and the second storage battery;
step S402 specifically includes: in the peak period of the power utilization level, the AC switch is controlled to be switched on, and the first switch and the second switch are switched off so as to utilize the AC to supply power for the AC load and utilize the DC output by the rectifier to supply power for the DC load;
step S403 specifically includes: the alternating current switch, the second switch and the third switch are controlled to be switched off in the peak electricity utilization period and the peak electricity utilization period, so that alternating current is used for supplying power to the alternating current load, and the first storage battery is used for supplying power to the direct current load;
and further comprising: when the alternating current is abnormal and the residual electric energy of the first storage battery is higher than the electric energy threshold value, the second switch and the third switch are controlled to be turned off so as to supply power to the direct current load by using the first storage battery; and when the alternating current is abnormal and the residual electric energy of the first storage battery is not higher than the electric energy threshold value, controlling the third switch to be conducted so as to supply power to the direct current load by utilizing the second storage battery.
In one embodiment of the present invention, the method further comprises:
and transmitting the detection data of the first detection circuit, the second detection circuit, the third detection circuit and the fourth detection circuit to a control center.
In one embodiment of the present invention, the method further comprises:
and when the power supply control system is determined to be in fault according to the detection data of the first detection circuit, the second detection circuit, the third detection circuit and the fourth detection circuit, controlling the on-off states of the alternating current switch, the first switch, the second switch and the third switch according to a preset fault processing rule.
In one embodiment of the present invention, the method further comprises:
and when the power supply control system is determined to be recovered to be normal, controlling the states of the alternating current switch, the first switch, the second switch and the third switch according to a default mode based on the power utilization time period.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. 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.
The principle and the implementation of the present invention are explained in the present application by using specific examples, and the above description of the embodiments is only used to help understanding the technical solution and the core idea of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. A power supply control system, comprising:
the first end of the alternating current switch is used for receiving alternating current, and the second end of the alternating current switch is connected with the input end of the rectifier;
the rectifier is connected with the first end of the first switch and the direct current load through the output end;
the second end of the first switch is connected with the positive electrode of the first storage battery;
the first battery;
the current direction limiting circuit is used for only allowing current to flow from the input end of the current direction limiting circuit to the output end of the current direction limiting circuit;
the controller is used for controlling the alternating current switch and the first switch to be conducted during the electricity consumption valley period so as to utilize the alternating current to supply power for the alternating current load, and utilize the direct current output by the rectifier to supply power for the direct current load and charge the first storage battery; during the peak period of the utilization level, controlling the AC switch to be switched on, and switching off the first switch so as to supply power to the AC load by using the AC and supply power to the DC load by using the DC output by the rectifier; and in the peak period and the peak period of power utilization, the alternating current switch is controlled to be switched off so as to supply power to the alternating current load by using the alternating current and supply power to the direct current load by using the first storage battery.
2. The power supply control system according to claim 1, characterized by further comprising:
the first end of the second switch is connected with the output end of the rectifier, and the second end of the second switch is respectively connected with the anode of the second storage battery and the first end of the third switch;
the second battery;
a third switch having a second terminal connected to the input terminal of the current direction limiting circuit;
the controller is specifically configured to:
during the electricity consumption valley period, controlling the alternating current switch, and conducting the first switch and the second switch so as to utilize the alternating current to supply power for an alternating current load, and utilize the direct current output by the rectifier to supply power for the direct current load and charge the first storage battery and the second storage battery; in a peak period of the power utilization level, controlling the alternating current switch to be switched on, and switching off the first switch and the second switch so as to supply power to the alternating current load by using the alternating current and supply power to the direct current load by using the direct current output by the rectifier; the alternating current switch, the second switch and the third switch are controlled to be switched off in the peak electricity utilization period and the peak electricity utilization period so as to supply power to the alternating current load by using the alternating current and supply power to the direct current load by using the first storage battery; when the alternating current is abnormal and the residual electric energy of the first storage battery is higher than an electric energy threshold value, controlling the second switch and the third switch to be switched off so as to supply power to the direct current load by using the first storage battery; and when the alternating current is abnormal and the residual electric energy of the first storage battery is not higher than the electric energy threshold value, controlling the third switch to be conducted so as to supply power to the direct current load by using the second storage battery.
3. The power supply control system according to claim 2, characterized by further comprising:
a first detection circuit for detecting a current flowing through the ac switch and a voltage at an input terminal of the rectifier;
a second detection circuit for detecting a current flowing through the first switch and a terminal voltage of the first secondary battery;
a third detection circuit for detecting a current flowing through the second switch and a terminal voltage of the second secondary battery;
a fourth detection circuit for detecting a current flowing through the third switch;
the controller is further configured to: and transmitting the detection data of the first detection circuit, the second detection circuit, the third detection circuit and the fourth detection circuit to a control center.
4. The power supply control system of claim 3, wherein the controller is further configured to:
and when the power supply control system is determined to be in fault according to the detection data of the first detection circuit, the second detection circuit, the third detection circuit and the fourth detection circuit, controlling the on-off states of the alternating current switch, the first switch, the second switch and the third switch according to a preset fault processing rule.
5. The power supply control system of claim 4, wherein the controller is further configured to:
and when the power supply control system is determined to be recovered to be normal, controlling the states of the alternating current switch, the first switch, the second switch and the third switch according to a default mode based on a power utilization period.
6. The power supply control system of claim 1 wherein the current direction limiting circuit comprises a first diode having an anode as an input to the current direction limiting circuit and a cathode as an output of the current direction limiting circuit.
7. The power supply control system of claim 6, wherein the current direction limiting circuit further comprises:
a fuse and a circuit breaker in series with the first diode.
8. The power supply control system of claim 1 wherein the electricity consumption valley period, the electricity consumption peak period, and the electricity consumption peak period are electricity consumption periods determined based on a user electricity consumption profile.
9. A communications base station comprising a power supply control system as claimed in any one of claims 1 to 8.
10. A power supply control method applied to a controller of a power supply control system according to any one of claims 1 to 8, comprising:
during the electricity consumption valley period, controlling the AC switch and the first switch to be conducted so as to utilize the AC to supply power for the AC load, and utilize the DC output by the rectifier to supply power for the DC load and charge the first storage battery;
during the peak period of the utilization level, controlling the AC switch to be switched on, and switching off the first switch so as to supply power to the AC load by using the AC and supply power to the DC load by using the DC output by the rectifier;
and in the peak period and the peak period of power utilization, the alternating current switch is controlled to be switched off so as to supply power to the alternating current load by using the alternating current and supply power to the direct current load by using the first storage battery.
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| CN202111088525.1A CN113783191A (en) | 2021-09-16 | 2021-09-16 | Communication base station and power supply control system and method thereof |
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| CN202111088525.1A CN113783191A (en) | 2021-09-16 | 2021-09-16 | Communication base station and power supply control system and method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN208835762U (en) * | 2018-10-10 | 2019-05-07 | 无锡美凯能源科技有限公司 | A kind of energy storage for power supply system applied to base station |
| CN112531761A (en) * | 2020-12-11 | 2021-03-19 | 长沙新材料产业研究院有限公司 | Direct-current peak clipping and valley filling system, device and method |
| CN212921195U (en) * | 2020-06-16 | 2021-04-09 | 福建巨电新能源股份有限公司 | Power supply system of new energy mobile energy storage box |
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2021
- 2021-09-16 CN CN202111088525.1A patent/CN113783191A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN208835762U (en) * | 2018-10-10 | 2019-05-07 | 无锡美凯能源科技有限公司 | A kind of energy storage for power supply system applied to base station |
| CN212921195U (en) * | 2020-06-16 | 2021-04-09 | 福建巨电新能源股份有限公司 | Power supply system of new energy mobile energy storage box |
| CN112531761A (en) * | 2020-12-11 | 2021-03-19 | 长沙新材料产业研究院有限公司 | Direct-current peak clipping and valley filling system, device and method |
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