CN111917122A - Peak clipping and valley filling power supply control method for communication base station - Google Patents

Abstract

A method for controlling peak-shaving and valley-filling power supply of a communication base station, comprising the following steps: step S11: whether a control command is received; step S12: detecting and judging whether there is electricity in a power grid; step S13: a controller controls the power supply of the base station to supply power to the load of the base station , and control the AC side switch connected to the power grid to be disconnected; step S14: determine whether the AC side switch is disconnected; step S15: determine whether the voltage of the base station power supply is too low; step S16: if the AC side switch is not disconnected, the controller Send an alarm signal to a control center; step S17: determine whether the power grid is incoming; step S18: the controller controls the base station power supply to stop discharging; step S20: execute the control instruction sent by the controller. In this way, the base station power supply of the communication base station can be reasonably utilized, the peak and valley filling of the power grid can be realized, the function of the base station power supply can be greatly exerted, and the income can be improved.

Description

Power control method for peak shaving and valley filling of communication base station

technical field

The invention relates to the technical field of base station power supplies of communication base stations, in particular to a control method for peak-shaving and valley-filling power supplies of communication base stations.

Background technique

In order to ensure uninterrupted communication, the base station needs to be equipped with an emergency backup power supply in addition to the normal mains supply to ensure that the base station can work normally when the mains supply is abnormal.

The backup power source of the existing base station is mainly lead-acid battery. With the development of lithium batteries, the cost has dropped, and it has become possible to apply to base stations. Compared with lead-acid batteries, lithium batteries are more environmentally friendly and have a longer service life. At the same capacity, lithium batteries occupy a smaller footprint and are lighter in weight. Moreover, the lithium battery is convenient to monitor the usage status of the battery.

At present, the base station power supply is generally only used as a backup power supply, and the utilization rate is low. In addition, the electricity demand of mains is also very different at different times, such as working days or non-working days, morning, noon, afternoon and evening on the same day; It is a subject of the applicant's research to realize the peak-shaving and valley-filling of the power grid and maximize the role of the base station power supply.

SUMMARY OF THE INVENTION

In view of this, the present invention provides a peak-shaving and valley-filling power control method for a communication base station that reasonably utilizes the base station power supply of the communication base station, realizes the peak-shaving and valley-filling of the power grid, maximizes the role of the base station power supply, and improves the income, so as to realize the peak-shaving and valley-filling power supply control method of the communication base station. Solve the above problem.

A method for controlling peak-shaving and valley-filling power supply of a communication base station, comprising the following steps: Step S11: judging whether a control command sent by a controller is received; if no control command is received, enter step S12; S20; Step S12: Detect and judge whether there is electricity in the power grid, if yes, go to Step S20, otherwise go to Step S13; Step S13: The controller controls the base station power supply to supply power to the base station load, and controls the AC side switch connected to the power grid to disconnect; Step S14: determine whether the AC side switch is disconnected, if yes, go to step S15, otherwise go to step S16; step S15: detect the voltage of the base station power supply and determine whether the voltage of the base station power supply is too low, if yes, go to step S18, otherwise go to step S17 ; Step S16: If the AC side switch is not disconnected, the controller sends an alarm signal to a control center; Step S17: Determine whether the power grid is powered, if it is, go to Step S20, otherwise return to Step S15; Step S18: The controller controls the power supply of the base station Discharge is stopped, and the controller sends an alarm signal that the power is exhausted to the control center; Step S20: Execute the control instruction sent by the controller.

Further, before the step S11, the first total voltage threshold of the base station power supply and the first cell voltage threshold of the battery unit are set; in step S15, if the total voltage of the base station power supply is less than the first total voltage threshold or any one battery unit If the total voltage of the base station power supply is greater than or equal to the first total voltage threshold, and the voltage of any battery unit is greater than or equal to the first single cell voltage If the threshold is set, it is judged that the voltage of the base station power supply is normal.

Further, the AC side switch is a relay.

Further, in the above step S16, if the AC side switch is not turned off after three consecutive detections, the controller sends an alarm signal to a control center.

Further, the step S20 includes the following steps: step S21: receiving a control command sent by the controller; step S22: judging whether the control command is a charging command or a discharging command; if it is a charging command, go to step S40, if it is a discharging command, then Go to step S30; step S30: execute the discharge command; step S40: execute the charge command.

Further, the step S30 includes the following steps: Step S31: the bidirectional inverter receives the discharge command sent by the controller, and the base station power supply supplies power to the base station load at the same time; Step S32: the base station power supply discharges, and the bidirectional inverter discharges the base station power The direct current is converted into the alternating current transmitted by the power grid, so that the power supply of the base station transmits power to the power grid; Step S33: Detect the voltage of the power supply of the base station and judge whether the voltage of the power supply of the base station is too low, if yes, go to step S36, otherwise go to step S34; Step S36: controller control The power supply of the base station stops discharging and switches to supply power to the base station from the power grid, and the controller sends an alarm signal of running out of power to the control center; step S34: continuously monitor the control command sent by the controller; step S35: determine whether the control command is a discharge command, yes Then go back to step S32, otherwise go to step S20.

Further, before step S31, set the second total voltage threshold of the base station power supply and the first cell voltage threshold of the battery unit; the second total voltage threshold is greater than the first total voltage threshold; in step S33, if the total voltage of the base station power supply is less than The second total voltage threshold or the voltage of any one battery unit is less than the first cell voltage threshold, it is determined that the voltage of the base station power supply is too low; if the total voltage of the base station power supply is greater than or equal to the second total voltage threshold, and the If the voltages are all greater than or equal to the first cell voltage threshold, it is determined that the voltage of the base station power supply is normal.

Further, the step S40 includes the following steps: Step S41: the bidirectional inverter receives the charging instruction sent by the controller; Step S42: the bidirectional inverter converts the alternating current in the power grid into direct current to charge the base station power supply; step S43: Detect whether the charging of the base station power supply is completed, if yes, go to step S46, otherwise go to step S44; Step S46: the controller controls the grid to stop charging the base station power supply, and the controller sends a charging completion signal to the control center; Step S44: Continuous monitoring and control Step S45: determine whether the control command is a charging command, if yes, return to Step S42, otherwise, go to Step S20.

Further, before the step S41, set the third total voltage threshold of the base station power supply and the second cell voltage threshold of the battery unit, the third total voltage threshold is greater than the first total voltage threshold and the second total voltage threshold, the second total voltage threshold The cell voltage threshold is greater than the first cell voltage threshold; in step S43, if the total voltage of the base station power supply is greater than or equal to the third total voltage threshold, or the voltage of any battery cell is greater than or equal to the second cell voltage threshold, then determine The charging of the base station power supply is completed; if the total voltage of the base station power supply is less than the third total voltage threshold and the voltage of any battery unit is less than the second cell voltage threshold, it is determined that the charging of the base station power supply has not been completed.

Compared with the prior art, the method for controlling the peak-shaving and valley-filling power supply of the communication base station of the present invention includes the following steps: Step S11: judging whether a control command sent by a controller is received; After receiving the control instruction, go to step S20; step S12: detect and determine whether there is electricity in the grid, if yes, go to step S20, otherwise go to step S13; step S13: the controller controls the base station power supply to supply power to the base station load, and controls the connection with the power grid at the same time The AC side switch is disconnected; Step S14: Determine whether the AC side switch is disconnected, if yes, go to Step S15, otherwise go to Step S16; Step S15: Detect the voltage of the base station power supply and judge whether the voltage of the base station power supply is too low, go to Step S15 Step S18, otherwise, go to Step S17; Step S16: If the AC side switch is not disconnected, the controller sends an alarm signal to a control center; Step S17: Determine whether the power grid is receiving electricity, if yes, go to Step S20, otherwise return to Step S15; Step S18: The controller controls the power supply of the base station to stop discharging; Step S20: Execute the control instruction sent by the controller. In this way, the base station power supply of the communication base station can be reasonably utilized, the peak-shaving and valley-filling of the power grid can be realized, the role of the base station power supply can be greatly exerted, and the income can be improved.

Description of drawings

Embodiments of the present invention are described below in conjunction with the accompanying drawings, wherein:

FIG. 1 is a schematic diagram of a work flow at the time of power failure of a method for controlling a power supply for peak shaving and valley filling of a communication base station provided by the present invention.

FIG. 2 is a schematic diagram of the workflow of executing the control instruction in FIG. 1 .

FIG. 3 is a schematic diagram of a work flow for executing a discharge command in FIG. 2 .

FIG. 4 is a schematic diagram of a work flow for executing the charging command in FIG. 2 .

Detailed ways

Specific embodiments of the present invention will be further described in detail below based on the accompanying drawings. It should be understood that the descriptions of the embodiments of the present invention herein are not intended to limit the protection scope of the present invention.

Referring to FIG. 1 , the method for controlling the peak-shaving and valley-filling power supply of a communication base station provided by the present invention includes the following steps:

Step S10: Set the first total voltage threshold, the second total voltage threshold, and the third total voltage threshold of the base station power supply; set the first cell voltage threshold and the second cell voltage threshold of the battery unit; a total voltage threshold, the third total voltage threshold is greater than the second total voltage threshold, and the second cell voltage threshold is greater than the first cell voltage threshold.

Step S11: determine whether the control command sent by the controller is received; if not, then go to step S12, and when the control command is received, go to step S20;

Step S12: Detect and judge whether there is electricity in the power grid, if yes, go to Step S20, otherwise go to Step S13;

Step S13: the controller controls the base station power supply to supply power to the base station load, and controls the AC side switch connected to the power grid to disconnect;

Step S14: Determine whether the AC side switch is disconnected, if yes, go to Step S15, otherwise, go to Step S16; the AC side switch may be a relay.

Step S15: Detect the voltage of the base station power supply and determine whether the voltage of the base station power supply is too low, if yes, go to Step S18, otherwise go to Step S17. Specifically, if the total voltage of the base station power supply is less than the first total voltage threshold or the voltage of any battery unit is less than the first cell voltage threshold, it is determined that the voltage of the base station power supply is too low; if the total voltage of the base station power supply is greater than or equal to the first The total voltage threshold value, and the voltage of any one battery unit is greater than or equal to the first cell voltage threshold value, it is judged that the voltage of the base station power supply is normal.

Step S16: if the AC side switch is not disconnected after three consecutive detections, the controller sends an alarm signal to a control center indicating that the AC side switch is not disconnected;

Step S17: determine whether the power grid is receiving electricity, if yes, go to step S20, otherwise return to step S15;

Step S18: the controller controls the power supply of the base station to stop discharging, and the controller sends an alarm signal indicating that the power is exhausted to the control center;

Step S20: Execute the control instruction sent by the controller.

Referring to FIG. 2 , if there is an incoming call from the power grid, or the user sends an operation command to the controller, so that the controller sends a control command, step S20 is started.

Executing the control instructions issued by the controller includes the following steps:

Step S21: receiving a control instruction sent by the controller;

Step S22: Determine whether the control command is a charging command or a discharging command; if it is a charging command, go to Step S40, and if it is a discharging command, go to Step S30. Whether the control command is a charging command or a discharging command can be determined by the control center, and the control command can also be automatically set as a charging command or a discharging command according to different time periods. For example, during the trough period of electricity consumption (when the electricity price is lower), the electricity purchased from the grid will charge the power supply of the base station; during the peak period of electricity consumption (when the electricity price is higher), the electricity will be output to the grid. Thereby earning the difference and increasing the profit.

Step S30: execute the discharge instruction;

Step S40: Execute the charging instruction.

Please refer to FIG. 3, the above step S30 includes the following steps:

Step S31: the bidirectional inverter receives the discharge command sent by the controller, and the base station power supply supplies power to the base station load at the same time;

Step S32: the base station power supply is discharged, and the bidirectional inverter converts the DC power of the base station power supply into the AC power transmitted by the power grid, so that the base station power supply transmits power to the power grid;

Step S321: the power grid feeds back the feeding status of the base station power supply;

Step S322: determine whether the power grid feeding works normally, if so, go to step S33, otherwise go to step S323;

Step S323: if the power grid feeds back three consecutive times that the power supply of the base station is abnormal, the controller sends an alarm signal to the control center indicating that the power supply is abnormal;

Step S33: Detect the voltage of the base station power supply and determine whether the voltage of the base station power supply is too low, if yes, go to step S36, otherwise go to step S34. Specifically, if the total voltage of the base station power supply is less than the second total voltage threshold or the voltage of any battery unit is less than the first cell voltage threshold, it is determined that the voltage of the base station power supply is too low; if the total voltage of the base station power supply is greater than or equal to the second The total voltage threshold value, and the voltage of any one battery unit is greater than or equal to the first cell voltage threshold value, it is judged that the voltage of the base station power supply is normal. The second total voltage threshold is greater than the first total voltage threshold, so that the base station power supply still has enough power to supply power to the base station load after the power feeding is completed.

Step S36: the controller controls the power supply of the base station to stop discharging and switches to supply power to the base station from the power grid, and at the same time, the controller sends an alarm signal indicating that the power is exhausted to the control center;

Step S34: Continuously monitor the control instructions sent by the controller;

Step S35: Determine whether the control command is a discharge command, if yes, return to Step S32, otherwise, go to Step S20.

Starting step S20, the controller controls the bidirectional inverter to correspondingly change the working mode.

Please refer to FIG. 4 , the above step S40 includes the following steps:

Step S41: the bidirectional inverter receives the charging instruction sent by the controller;

Step S42: the bidirectional inverter converts the alternating current in the power grid into direct current to charge the power supply of the base station;

Step S421: the base station power feeds back the charging state;

Step S422: determine whether the charging of the base station power supply is normal, if so, go to step S43, otherwise go to step S423;

Step S423: If the base station power supply reports abnormal charging three times in a row, the controller sends an alarm signal indicating abnormal charging to the control center; Step S43: Check whether the base station power supply is fully charged, if yes, go to Step S46, otherwise go to Step S44. Specifically, if the total voltage of the base station power supply is greater than or equal to the third total voltage threshold, or the voltage of any battery unit is greater than or equal to the second cell voltage threshold, it is determined that the charging of the base station power supply is complete; if the total voltage of the base station power supply is less than the third total voltage threshold Three total voltage thresholds, and at the same time the voltage of any one battery unit is less than the second single voltage threshold, it is judged that the charging of the base station power supply has not been completed.

Step S46: The controller controls the power grid to stop charging the power supply of the base station, and the controller sends a signal indicating that the charging is completed to the control center. The control center indicates that the charging of the base station power supply is completed by lighting an indicator light. Step S44: Continuously monitor the control instructions sent by the controller;

Step S45: Determine whether the control command is a charging command, if yes, return to Step S42, otherwise, go to Step S20.

Starting step S20, the controller controls the bidirectional inverter to correspondingly change the working mode.

The peak-shaving and valley-filling power control method of the communication base station of the present invention works according to a predetermined program or flow when not receiving the control command temporarily issued by the control center; in addition, the control command temporarily issued by the control center can be received in real time, and the Perform the corresponding operation. This enables real-time settlement or execution of control commands from the control center.

Compared with the prior art, the method for controlling the peak-shaving and valley-filling power supply of the communication base station of the present invention includes the following steps: Step S11: judging whether a control command sent by a controller is received; After receiving the control instruction, go to step S20; step S12: detect and determine whether there is electricity in the grid, if yes, go to step S20, otherwise go to step S13; step S13: the controller controls the base station power supply to supply power to the base station load, and controls the connection with the power grid at the same time The AC side switch is disconnected; Step S14: Determine whether the AC side switch is disconnected, if yes, go to Step S15, otherwise go to Step S16; Step S15: Detect the voltage of the base station power supply and judge whether the voltage of the base station power supply is too low, go to Step S15 Step S18, otherwise, go to Step S17; Step S16: If the AC side switch is not disconnected, the controller sends an alarm signal to a control center; Step S17: Determine whether the power grid is receiving electricity, if yes, go to Step S20, otherwise return to Step S15; Step S18: The controller controls the power supply of the base station to stop discharging; Step S20: Execute the control instruction sent by the controller. In this way, the base station power supply of the communication base station can be reasonably utilized, the peak-shaving and valley-filling of the power grid can be realized, the role of the base station power supply can be greatly exerted, and the income can be improved.

The above are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements or improvements within the spirit of the present invention are all included within the scope of the claims of the present invention.

Claims (9)

1. a peak-shaving and valley-filling power supply control method of a communication base station, characterized in that: comprising the following steps: Step S11: judging whether a control command sent by a controller is received; if the control command is not received, go to step S12, and if the control command is received, go to step S20; Step S12: Detect and judge whether there is electricity in the power grid, if yes, go to Step S20, otherwise go to Step S13; Step S13: the controller controls the base station power supply to supply power to the base station load, and controls the AC side switch connected to the power grid to disconnect; Step S14: determine whether the AC side switch is disconnected, if yes, go to step S15, otherwise go to step S16; Step S15: Detect the voltage of the base station power supply and determine whether the voltage of the base station power supply is too low, if yes, go to step S18, otherwise go to step S17; Step S16: if the AC side switch is not disconnected, the controller sends an alarm signal to a control center; Step S17: determine whether the power grid is receiving electricity, if yes, go to step S20, otherwise return to step S15; Step S18: the controller controls the power supply of the base station to stop discharging, and the controller sends an alarm signal of power exhaustion to the control center; Step S20: Execute the control instruction sent by the controller. 2. The method for controlling the peak-shaving and valley-filling power supply of a communication base station according to claim 1, wherein: before the step S11, the first total voltage threshold of the base station power supply and the first cell voltage threshold of the battery unit are set; In step S15, if the total voltage of the base station power supply is less than the first total voltage threshold or the voltage of any battery unit is less than the first cell voltage threshold, it is determined that the voltage of the base station power supply is too low; if the total voltage of the base station power supply is greater than or equal to the first A total voltage threshold, and at the same time the voltage of any battery unit is greater than or equal to the first cell voltage threshold, it is judged that the voltage of the base station power supply is normal. 3. The method for controlling the peak-shaving and valley-filling power supply of a communication base station according to claim 1, wherein the AC side switch is a relay. 4. The peak-shaving and valley-filling power supply control method of a communication base station as claimed in claim 1, wherein in the above-mentioned step S16, if the AC side switch is not disconnected for three consecutive detections, the controller sends an alarm to a control center Signal. 5. The peak-shaving and valley-filling power control method for a communication base station according to claim 2, wherein the step S20 comprises the following steps: Step S21: receiving a control instruction sent by the controller; Step S22: determine whether the control command is a charging command or a discharging command; if it is a charging command, go to step S40, and if it is a discharging command, go to step S30; Step S30: execute the discharge instruction; Step S40: Execute the charging instruction. 6. The peak-shaving and valley-filling power control method for a communication base station according to claim 5, wherein the step S30 comprises the following steps: Step S31: a bidirectional inverter receives a discharge command sent by the controller, the DC end of the bidirectional inverter is connected to the base station power supply, the AC end is connected to an external power grid, and the base station power supply supplies power to the base station load at the same time; Step S32: the base station power supply is discharged, and the bidirectional inverter converts the DC power of the base station power supply into the AC power transmitted by the power grid, so that the base station power supply transmits power to the power grid; Step S33: Detect the voltage of the base station power supply and determine whether the voltage of the base station power supply is too low, if yes, go to step S36, otherwise go to step S34; Step S36: the controller controls the power supply of the base station to stop discharging and switches to supply power to the base station from the power grid, and at the same time, the controller sends an alarm signal that the power is exhausted to the control center; Step S34: Continuously monitor the control instructions sent by the controller; Step S35: Determine whether the control command is a discharge command, if yes, return to Step S32, otherwise, go to Step S20. 7. The peak-shaving and valley-filling power supply control method of a communication base station as claimed in claim 6, characterized in that: before step S31, the second total voltage threshold of the base station power supply and the first cell voltage threshold of the battery unit are set; The second total voltage threshold is greater than the first total voltage threshold; in step S33, if the total voltage of the base station power supply is less than the second total voltage threshold or the voltage of any battery unit is less than the first cell voltage threshold, it is determined that the voltage of the base station power supply is too low ; If the total voltage of the base station power supply is greater than or equal to the second total voltage threshold, and the voltage of any battery unit is greater than or equal to the first cell voltage threshold, then it is judged that the voltage of the base station power supply is normal. 8. The method for controlling peak-shaving and valley-filling power supply of a communication base station according to claim 7, wherein the step S40 comprises the following steps: Step S41: a bidirectional inverter receives the charging command sent by the controller, the DC end of the bidirectional inverter is connected to the power supply of the base station, and the AC end is connected to the external power grid; Step S42: the bidirectional inverter converts the alternating current in the power grid into direct current to charge the power supply of the base station; Step S43: Detect whether the charging of the base station power supply is completed, if yes, go to Step S46, otherwise go to Step S44; Step S46: the controller controls the power grid to stop charging the base station power supply, and the controller sends a charging completion signal to the control center; Step S44: Continuously monitor the control instructions sent by the controller; Step S45: Determine whether the control command is a charging command, if yes, return to Step S42, otherwise, go to Step S20. 9 . The peak-shaving and valley-filling power supply control method of a communication base station according to claim 8 , wherein before the step S41 , a third total voltage threshold of the base station power supply and a second cell voltage threshold of the battery unit are set. 10 . , the third total voltage threshold is greater than the first total voltage threshold and the second total voltage threshold, and the second cell voltage threshold is greater than the first cell voltage threshold; in step S43, if the total voltage of the base station power supply is greater than or equal to the third total voltage threshold, or the voltage of any one battery unit is greater than or equal to the second cell voltage threshold, it is judged that the charging of the base station power supply is complete; if the total voltage of the base station power supply is less than the third total voltage threshold, and the voltage of any battery unit is less than the second If the cell voltage threshold is set, it is judged that the charging of the base station power supply has not been completed.

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