A small energy storage station control system and method

Abstract

The present invention discloses a small energy storage station regulation system and method, which includes a master station regulation unit, a base station energy storage control unit, an instruction output unit, and a base station information acquisition unit; the master station regulation unit is communicatively connected to the instruction output unit and the base station information acquisition unit respectively, and the instruction output unit is communicatively connected to the base station energy storage control unit. By the collaborative cooperation between the base station information acquisition unit and the master station regulation unit, the present invention can collect the operation status of the energy storage lines of the base stations in real time, generate control instructions accordingly, and perform setting regulation on the operation status of the energy storage lines, so as to realize the ubiquitous access and real-time monitoring of the small energy storage station composed of the energy storage facilities of the signal base stations, and ensure that the large-scale distributed low-voltage energy storage facilities and new energy can be safely and stably controlled when connected to the grid simultaneously.

Description

Technical Field

[0001] The present invention relates to the technical field of distributed power sources, and particularly relates to a small energy storage station regulation system and method. Background Art

[0002] With the increasing power supply reliability, the energy storage facilities of signal base stations are basically idle, and even need to adopt "maintenance-style" passive discharge. The energy storage facilities of signal base stations have great development potential, and operators have an urgent need to develop the comprehensive application value of energy storage facilities.

[0003] Research on group regulation and control technology to regulate the energy storage facilities of all signal base stations in the jurisdiction, and use them as distributed low-voltage energy storage facilities, which is equivalent to obtaining a large-capacity distributed energy storage power station. Moreover, compared with the energy storage on the main grid side, since the energy storage facilities of signal base stations are installed on the low-voltage side of the distribution substation, they have the functions of alleviating the short-term load peak of the substation area and stabilizing the voltage at the end of the substation area.

[0004] Therefore, in order to realize the reasonable development and utilization of the energy storage facilities of signal base stations, it is of great significance to ensure the safe and stable control of the power grid when large-scale distributed low-voltage energy storage facilities and new energy are connected to the grid simultaneously. Summary of the Invention

[0005] The technical problem to be solved by the present invention is: to provide a small energy storage station regulation system and method to ensure the safe and stable control of the power grid when large-scale distributed low-voltage energy storage facilities and new energy are connected to the grid simultaneously.

[0006] To solve the above technical problem, the technical solution adopted by the present invention is:

[0007] A small energy storage station regulation system includes a master station regulation unit, a base station energy storage control unit, an instruction output unit, and a base station information acquisition unit;

[0008] The master station regulation unit is respectively communicatively connected with the instruction output unit and the base station information acquisition unit, and the instruction output unit is communicatively connected with the base station energy storage control unit;

[0009] The base station information acquisition unit: is used to acquire the base station operation information of the base station;

[0010] The master station regulation unit is used to report the base station operation information and the base station control information, and generate corresponding control instructions according to the base station operation information;

[0011] The instruction output unit is used to send the control instructions to the base station energy storage control unit and report the base station control information;

[0012] The base station energy storage control unit is used to control the basic operation of the base station.

[0013] To solve the above technical problems, another technical solution adopted by the present invention is as follows:

[0014] A small energy storage station regulation method, which is applied to the above-mentioned small energy storage station regulation system, includes the following steps:

[0015] S1. Obtain the base station operation information collected by the base station information collection unit;

[0016] Among them, the base station operation information includes the line switch information, active power, reactive power, power factor, voltage, current, maximum rechargeable power, maximum dischargeable power, and SOC parameter information of the base station;

[0017] S2. Perform a qualified detection on the operation status of the energy storage line of the base station according to the base station operation information and determine the abnormal line that needs to be adjusted;

[0018] S3. Calculate the adjustment control amount of each abnormal line and send it to the base station energy storage control unit through the instruction output unit to regulate the abnormal line;

[0019] S4. Receive and display the regulation result feedback by the base station energy storage control unit.

[0020] The beneficial effects of the present invention are as follows: A small energy storage station regulation system and method are built on the energy storage facilities of signal base stations. By using the coordinated cooperation between the base station information collection unit and the master station regulation unit, the operation status of the energy storage lines of the base stations is collected in real time, and control instructions are generated accordingly to perform adjustment regulation on the operation status of the energy storage lines, realizing the ubiquitous access and real-time monitoring of the small energy storage stations composed of the energy storage facilities of signal base stations, and ensuring that the power grid with large-scale distributed low-voltage energy storage facilities and new energy connected to the grid simultaneously can be controlled safely and stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a system block diagram of a small energy storage station regulation system according to an embodiment of the present invention;

[0022] Figure 2 It is a step schematic diagram of a small energy storage station regulation method according to an embodiment of the present invention.

[0023] Label description:

[0024] 1. Master station regulation unit; 2. Base station energy storage control unit; 3. Instruction output unit; 4. Base station information collection unit; 5. Battery control unit;

[0025] 11. Master station monitoring module; 12. Operation control module; 13. Display module. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] To describe the technical content, achieved objectives and effects of the present invention in detail, the following is described in conjunction with the embodiments and with reference to the drawings.

[0027] Please refer to Figure 1 , a small energy storage station regulation system, including a master station regulation unit 1, a base station energy storage control unit 2, an instruction output unit 3 and a base station information acquisition unit 4;

[0028] The master station regulation unit is respectively communicatively connected to the instruction output unit and the base station information acquisition unit, and the instruction output unit is communicatively connected to the base station energy storage control unit;

[0029] The base station information acquisition unit is used to acquire the base station operation information of the base station;

[0030] The master station regulation unit is used to report the base station operation information and the base station control information, and generate corresponding control instructions according to the base station operation information;

[0031] The instruction output unit is used to send the control instructions to the base station energy storage control unit and report the base station control information;

[0032] The base station energy storage control unit is used to control the basic operation of the base station.

[0033] As can be seen from the above description, the beneficial effects of the present invention are as follows: Design a regulation system and build it on the energy storage facilities of signal base stations. Utilize the coordinated cooperation between the base station information acquisition unit and the master station regulation unit to collect the operation status of the energy storage lines of the base stations in real time, and generate control instructions accordingly to adjust and control the operation status of the energy storage lines, realizing the ubiquitous access and real-time monitoring of the small energy storage stations composed of the energy storage facilities of signal base stations, and ensuring the safe and stable control of the power grid when large-scale distributed low-voltage energy storage facilities and new energy are connected to the grid simultaneously.

[0034] Furthermore, the master station regulation unit includes a master station monitoring module 11, an operation control module 12 and a display module 13;

[0035] The master station monitoring module is respectively communicatively connected to the operation control module and the base station information acquisition unit;

[0036] The operation control module is connected to the display module and communicatively connected to the instruction output unit.

[0037] As can be seen from the above description, the master station control unit consists of a master station monitoring module, an operation control module, and a display module. The master station monitoring module is mainly responsible for collecting monitoring information, including the operation information of the base station, etc. The operation control module is responsible for analyzing and processing the collected information according to the set algorithm to obtain corresponding control instructions for intelligent control. The display unit is used to intuitively display the operation status of the system to maintenance personnel.

[0038] Furthermore, there is a 5G communication connection between the master station control unit and the instruction output unit, between the master station control unit and the base station information collection unit, and between the instruction output unit and the base station energy storage control unit.

[0039] As can be seen from the above description, the communication line of the system is implemented using 5G communication technology, providing a stable, reliable, and efficient communication control channel, which provides support and guarantee for the ubiquitous access and real-time monitoring of distributed small energy storage stations.

[0040] Furthermore, it also includes a battery control unit 5;

[0041] There is a communication connection between the base station energy storage control unit and the battery control unit, and the battery control unit is used to connect the single cells of the base station.

[0042] As can be seen from the above description, the base station energy storage control unit monitors the single cells of the base station through the battery control unit to form a multi-level strict control to ensure the stable operation of the system.

[0043] Furthermore, there are two or more battery control units, which are connected to the single cells in a one-to-one correspondence;

[0044] The base station energy storage control unit is respectively in communication connection with all the battery control units.

[0045] As can be seen from the above description, the battery control units correspond to the single cells one by one, so that the system can perform group control and point-to-point single cell control on the batteries respectively, which is flexible to use and convenient to control.

[0046] Please refer to Figure 2 , a small energy storage station control method, which is applied to the above-mentioned small energy storage station control system, and includes the following steps:

[0047] S1. Obtain the base station operation information collected by the base station information collection unit;

[0048] Among them, the base station operation information includes the line switch information, active power, reactive power, power factor, voltage, current, maximum rechargeable power, maximum dischargeable power, and SOC parameter information of the base station;

[0049] S2. Perform a pass / fail detection on the operating status of the energy storage lines of the base station based on the base station operating information, and determine the abnormal lines that need to be adjusted;

[0050] S3. Calculate the adjustment control quantity for each of the abnormal lines and send it to the base station energy storage control unit through the instruction output unit to regulate the abnormal lines;

[0051] S4. Receive and display the regulation result feedback by the base station energy storage control unit.

[0052] As can be seen from the above description, the beneficial effects of the present invention are as follows: By utilizing the collaborative cooperation between the base station information acquisition unit and the master station regulation unit, the operating status of the energy storage lines of the base station is collected in real time, and control instructions are generated accordingly to perform adjustment regulation on the operating status of the energy storage lines, realizing the ubiquitous access and real-time monitoring of the small energy storage station composed of the energy storage facilities of the signal base station, and ensuring the safe and stable control of the power grid when large-scale distributed low-voltage energy storage facilities and new energy are connected to the grid simultaneously.

[0053] Further, it further includes:

[0054] S5. Control the base station energy storage control unit to collect the battery information of all the single cells of the base station, and calculate the hybrid battery capacity of the base station according to the battery information.

[0055] As can be seen from the above description, by collecting the battery information of all the single cells to calculate the hybrid battery capacity of the base station, it is convenient to grasp the total power of the energy storage facilities of the base station as a small energy storage station in real time, so as to perform charge and discharge control on it, etc., and reasonably exert the energy storage value of the base station.

[0056] Further, it further includes:

[0057] S6. Perform charge and discharge control on the base station according to the group SOC values of all the single cells of the base station. If a single cell of the base station fails, control the base station energy storage control unit to disconnect the faulty single cell and recalculate the group SOC value.

[0058] As can be seen from the above description, when a single cell fails, the connection of the faulty battery is promptly disconnected and the group SOC value is recalculated, thereby ensuring the real-time effectiveness of the energy storage information and guaranteeing the normal operation of the system.

[0059] Further, the specific step S2 is:

[0060] Set the target status value corresponding to each line, compare the base station operating information with its corresponding target status value to detect whether the operating status of the energy storage line is qualified and determine the abnormal line.

[0061] As can be seen from the above description, by setting the target condition value as the comparison reference, the line operation condition can be analyzed quickly and accurately, improving the control efficiency.

[0062] The applicable scenarios of a small energy storage station control system and method of the present invention will be described below through specific embodiments:

[0063] Please refer to Figure 1 , the first embodiment of the present invention is:

[0064] A small energy storage station control system includes a master station control unit, a base station energy storage control unit, an instruction output unit, a battery control unit, and a base station information collection unit;

[0065] The master station control unit is respectively communicatively connected to the instruction output unit and the base station information collection unit, and the instruction output unit is communicatively connected to the base station energy storage control unit; there are two or more battery control units and they are respectively connected to the single batteries one by one; the base station energy storage control unit is respectively communicatively connected to all the battery control units.

[0066] In this embodiment, as Figure 1 shown, when a small energy storage station control system is in use, it is deployed in a signal base station and connected to the pole-mounted switch, disconnection switch, user electricity meter, energy storage transmitter, and single battery of the signal base station. Among them, the base station information collection unit: is used to collect the base station operation information of the base station; the master station control unit is used to report the base station operation information and the base station control information, and generate corresponding control instructions according to the base station operation information; the instruction output unit is used to send the control instructions to the base station energy storage control unit and report the base station control information; the base station energy storage control unit is used to control the basic operation of the base station.

[0067] In this embodiment, the master station control unit includes a master station monitoring module, an operation control module, and a display module; the master station monitoring module is respectively communicatively connected to the operation control module and the base station information collection unit; the operation control module is connected to the display module and communicatively connected to the instruction output unit.

[0068] In this embodiment, the connections between the master station control unit and the instruction output unit, between the master station control unit and the base station information collection unit, and between the instruction output unit and the base station energy storage control unit are all 5G communication connections. And, the data interactively uploaded in the system includes but is not limited to the feedback of telemetry fixed value, the feedback of telemetry control information, the feedback of the current control situation of the remote signaling site, the feedback of the whole station situation of the remote signaling, the feedback of the active power control of the remote signaling, the feedback of the reactive power control of the remote signaling, the feedback of the voltage control of the remote signaling, and the feedback of the battery parameters.

[0069] Please refer to Figure 2 , the second embodiment of the present invention is:

[0070] A control method for a small energy storage station, applied to a control system for a small energy storage station in Embodiment 1, includes the following steps:

[0071] S1. Obtain the base station operation information collected by the base station information collection unit;

[0072] Among them, the base station operation information includes the line switch information, active power, reactive power, power factor, voltage, current, maximum rechargeable power, maximum dischargeable power, and SOC parameter information of the base station;

[0073] S2. Conduct a qualified detection on the operation status of the energy storage lines of the base station according to the base station operation information and determine the abnormal lines that need to be adjusted;

[0074] In this embodiment, step S2 is specifically as follows:

[0075] Set the target status value corresponding to each line, compare the base station operation information with its corresponding target status value to detect whether the operation status of the energy storage line is qualified and determine the abnormal lines.

[0076] S3. Calculate the setting control quantity of each abnormal line and send it to the base station energy storage control unit through the instruction output unit to control the abnormal lines;

[0077] In this embodiment, taking the pole-mounted switch and sectional switch as examples, the specific process of calculating the setting control quantity is exemplified as follows:

[0078] It is detected that the capacitive reactive power of the line is greater than the upper limit value, but the line voltage does not exceed the voltage upper limit value, then no inductive reactive power compensation is performed on the base station; if the inductive reactive power of the line is greater than the upper limit value, the real-time capacitive reactive power is collected, the size of the inductive control reactive power is set to be equal to the fixed value of the sectionalized capacitive reactive power size, and it is sent to the base station energy storage control unit.

[0079] In this embodiment, when there are voltage-sensitive users in the user load, by setting the voltage fluctuation upper limit and voltage fluctuation lower limit and sending them to the base station energy storage control unit, the base station energy storage control unit performs voltage fluctuation range control.

[0080] S4. Receive and display the control result feedback by the base station energy storage control unit.

[0081] In this embodiment, not only the control result feedback by the base station energy storage control unit each time, but also the base station operation information and base station control information are displayed in real time on the display unit, so as to facilitate the operation and maintenance personnel to understand the basic status of the energy storage station.

[0082] S5. Control the base station energy storage control unit to collect the battery information of all single batteries of the base station, and calculate the hybrid battery capacity of the base station according to the battery information.

[0083] In this embodiment, the specific process of the hybrid battery capacity is as follows: Based on the current battery power S0, the maximum battery storage power S1, and the power S2 that meets the minimum requirements of the communication operator for power supply reliability, calculate the hybrid battery capacity of the base station, that is, the maximum allowable discharge power is S0 - S2, and the maximum allowable charge power is S1 - S0.

[0084] S6. Perform charge and discharge control on the base station according to the group SOC values of all single cells of the base station. If a single cell of the base station fails, control the energy storage control unit of the base station to cut off the faulty single cell and recalculate the group SOC value.

[0085] In summary, a small energy storage station regulation system and method provided by the present invention are built on the energy storage facilities of signal base stations. By using the coordinated cooperation between the base station information acquisition unit and the master station regulation unit, the operation status of the energy storage line of the base station is collected in real time, and control instructions are generated accordingly to adjust and control the operation status of the energy storage line, realizing the ubiquitous access and real-time monitoring of the small energy storage station composed of the energy storage facilities of signal base stations, and ensuring the safe and stable control of the power grid when large-scale distributed low-voltage energy storage facilities and new energy are connected to the grid simultaneously.

[0086] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical fields, shall be included in the patent protection scope of the present invention by the same token.

Claims

1. A control method for a small energy storage station, which is applied to a control system for a small energy storage station. The system includes a master station control unit, a base station energy storage control unit, an instruction output unit, and a base station information acquisition unit; The master station control unit is respectively communicatively connected to the instruction output unit and the base station information acquisition unit, and the instruction output unit is communicatively connected to the base station energy storage control unit; the base station information acquisition unit is used to collect the base station operation information of the base station; The master station control unit is used to report the base station operation information and the base station control information, and generate corresponding control instructions according to the base station operation information; The instruction output unit is used to send the control instructions to the base station energy storage control unit and report the base station control information; the base station energy storage control unit is used to control the basic operation of the base station; the master station control unit includes a master station monitoring module, an operation control module, and a display module; the master station monitoring module is respectively communicatively connected to the operation control module and the base station information acquisition unit; the operation control module is connected to the display module and communicatively connected to the instruction output unit; the communication connections between the master station control unit and the instruction output unit, between the master station control unit and the base station information acquisition unit, and between the instruction output unit and the base station energy storage control unit are all 5G communication connections; it further includes a battery control unit; the base station energy storage control unit is communicatively connected to the battery control unit, and the battery control unit is used to connect the single cells of the base station; there are two or more battery control units and they are respectively connected to the single cells in one-to-one correspondence; The base station energy storage control unit is respectively communicatively connected to all the battery control units, and is characterized by the following steps: S1. Obtain the base station operation information collected by the base station information acquisition unit; Among them, the base station operation information includes the line switch information of the base station, active power, reactive power, power factor, voltage, current, maximum rechargeable power, maximum dischargeable power, and SOC parameter information; S2. Perform a qualification test on the operation status of the energy storage line of the base station according to the base station operation information and determine the abnormal lines that need to be adjusted; S3. Calculate the adjustment control amount of each abnormal line and send it to the base station energy storage control unit through the instruction output unit to adjust the abnormal line; S4. Receive and display the adjustment result feedback by the base station energy storage control unit.

2. A control method for a small energy storage station according to claim 1, characterized in that, it further includes: S5. Control the base station energy storage control unit to collect the battery information of all the single cells of the base station, and calculate the hybrid battery capacity of the base station according to the battery information.

3. A control method for a small energy storage station according to claim 1, characterized in that, it further includes: S6. Perform charge and discharge control on the base station according to the group SOC values of all the single cells of the base station. If a single cell of the base station fails, control the base station energy storage control unit to cut off the faulty single cell and recalculate the group SOC value.

4. A control method for a small energy storage station according to claim 1, characterized in that, The specific steps of step S2 are as follows: Set the target status value corresponding to each line, and compare the base station operation information with the corresponding target status value to detect whether the operation status of the energy storage line is qualified and determine the abnormal line.

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