Centralized energy storage PCS power supply system, control method and equipment

Abstract

The invention discloses a centralized energy storage PCS power supply system, a control method and equipment. The system comprises a power grid power supply module, a battery power supply module, a first filtering module, a second filtering module, a first rectification current-limiting module and a second rectification current-limiting module. The power grid power supply module is used for providing first power supply voltage, the battery power supply module is used for providing second power supply voltage, and the first filtering module is used for filtering electric signals output by the first power supply voltage and the second power supply voltage and then outputting first power supply voltage; the second filtering module is used for providing second power supply voltage; according to the embodiment of the invention, high-power power supply support is provided for a post-stage circuit, the number and the size of energy storage devices are reduced, and the technical effect of reducing the cost is achieved.

Description

Technical Field

[0001] This application belongs to the field of converter power control technology, and in particular relates to a centralized energy storage PCS power supply system, control method and equipment. Background Technology

[0002] With the rapid development of centralized energy storage converters, the power of single units is increasing, the efficiency requirements are becoming higher, and the power supply requirements for some main power electrical components are becoming more demanding, which puts forward higher requirements for the power supply system of the products.

[0003] Currently, most centralized energy storage PCS power supply systems use AC rectification and battery rectification combined as the input side of the internal power supply. Under most circumstances, such as when the battery is fully charged, its voltage is higher than the voltage after grid rectification, thus it discharges preferentially, consuming battery power and reducing its discharge capacity. Furthermore, the battery itself does not generate electricity; the grid uses the PCS for power conversion to charge and discharge the battery. The PCS incurs some losses during charging and discharging (efficiency is not 100%), therefore, compared to direct grid power supply, battery power has lower energy utilization. For switching devices requiring energy storage, such as DC disconnect switches and AC circuit breakers connected to the power supply system, a short-term high-power supply is generally required. This necessitates increasing the number of voltage conversion modules and supporting capacitors in the circuit, increasing production costs. Simultaneously, data storage during power system failures requires large capacitors, again leading to increased size and cost. Summary of the Invention

[0004] This application provides a centralized energy storage PCS power supply system, control method, and device, which can provide dual power supply, improve power utilization, and increase energy storage structure to achieve data storage in case of failure. At the same time, multiple power supply voltages provide high-power power support for subsequent high-power circuits, reducing the number and size of energy storage devices and achieving the technical effect of reducing costs.

[0005] In a first aspect, embodiments of this application provide a centralized energy storage PCS power supply system, comprising: a grid power supply module, a battery power supply module, a first filter module, a second filter module, a first rectifier current limiting module, and a second rectifier current limiting module; the input terminal of the grid power supply module is electrically connected to the grid, and the output terminal of the grid power supply module is electrically connected to the first input terminal of the first filter module, the first input terminal of the first rectifier current limiting module, and the first input terminal of the second rectifier current limiting module, and the grid power supply module is used to provide a first power supply voltage; the input terminal of the battery power supply module is electrically connected to the battery, and the output terminal of the battery power supply module is electrically connected to the second input terminal of the first filter module, the second input terminal of the first rectifier current limiting module, and the second input terminal of the second rectifier current limiting module. The battery power supply module is configured to provide a second power supply voltage, wherein the first power supply voltage is greater than the second power supply voltage; the output terminal of the first filter module is electrically connected to the first input terminal of the second filter module, and the first filter module is configured to filter the electrical signal output from the first power supply voltage and the second power supply voltage and output a first power supply voltage; the second input terminal of the second filter module is electrically connected to the first output terminal of the first rectifier current limiting module, and the second filter module is configured to provide a second power supply voltage; the second output terminal of the first rectifier current limiting module is electrically connected to the third input terminal of the second rectifier current limiting module, and the first rectifier current limiting module is configured to provide a third power supply voltage to the second rectifier current limiting module, and the second rectifier current limiting module is configured to provide a fourth power supply voltage.

[0006] In one possible implementation, the grid power supply module includes a first rectifier and filter unit and a first power conversion unit; a first end of the first rectifier and filter unit serves as the input terminal of the grid power supply module, a second end of the first rectifier and filter unit is electrically connected to the input terminal of the first power conversion unit, and an output terminal of the first power conversion unit serves as the output terminal of the grid power supply module; and / or, the battery power supply module includes a second rectifier and filter unit and a second power conversion unit; a first end of the second rectifier and filter unit serves as the input terminal of the battery power supply module, a second end of the second rectifier and filter unit is electrically connected to the input terminal of the second power conversion unit, and an output terminal of the second power conversion unit serves as the output terminal of the battery power supply module.

[0007] In one possible implementation, the first filtering module includes a first rectifier unit, a second rectifier unit, and a first filter discharge unit; the input terminal of the first rectifier unit is electrically connected to the output terminal of the mains power supply module, and the output terminal of the first rectifier unit is electrically connected to the input terminal of the second filter module; the input terminal of the second rectifier unit is electrically connected to the output terminal of the battery power supply module, and the output terminal of the second rectifier unit is electrically connected to the input terminal of the second filter module; the first filter discharge unit is electrically connected to the output terminals of both the first rectifier unit and the second rectifier unit.

[0008] In one possible implementation, the second filtering module includes a third rectifier unit, a fourth rectifier unit, and a second filter discharge unit; the input terminal of the third rectifier unit serves as the first input terminal of the second filtering module, and the output terminal of the third rectifier unit is electrically connected to the output terminal of the fourth rectifier unit and the input terminal of the second filter discharge unit; the input terminal of the fourth rectifier unit serves as the second input terminal of the second filtering module.

[0009] In one possible implementation, the first rectification and current limiting module includes a first rectification and current limiting unit, a second rectification and current limiting unit, and an energy storage unit; the input terminal of the first rectification and current limiting unit serves as the first input terminal of the first rectification and current limiting module, and the output terminal of the first rectification and current limiting unit is electrically connected to the second input terminal of the second filter module and the input terminal of the second rectification and current limiting module; the input terminal of the second rectification and current limiting unit serves as the second input terminal of the first rectification and current limiting module, and the output terminal of the second rectification and current limiting unit is electrically connected to the second input terminal of the second filter module and the input terminal of the second rectification and current limiting module; the energy storage unit is electrically connected to the output terminal of the first rectification and current limiting unit, the output terminal of the second rectification and current limiting unit, the second input terminal of the second filter module, and the third input terminal of the second rectification and current limiting module.

[0010] In one possible implementation, the second rectification and current limiting module includes a third rectification and current limiting unit, a fourth rectification and current limiting unit, a fifth rectification unit, and a third filter and discharge unit; the input terminal of the third rectification and current limiting unit serves as the first input terminal of the second rectification and current limiting module, and the output terminal of the third rectification and current limiting unit is electrically connected to the output terminal of the fifth rectification unit; the input terminal of the fourth rectification and current limiting unit serves as the second input terminal of the second rectification and current limiting module, and the output terminal of the fourth rectification and current limiting unit is electrically connected to the output terminal of the fifth rectification unit; the input terminal of the fifth rectification unit serves as the third input terminal of the second rectification and current limiting module; the third filter and discharge unit is electrically connected to the output terminals of the third rectification and current limiting unit, the fourth rectification and current limiting unit, and the fifth rectification unit.

[0011] In one possible implementation, the first rectifier unit includes a first diode, the second rectifier unit includes a second diode, and the first filter discharge unit includes a first capacitor and a first resistor; the cathode of the first diode is electrically connected to the output terminal of the mains power supply module, and the anode of the first diode is electrically connected to the anode of the second diode, one end of the first capacitor, one end of the first resistor, and the input terminal of the second filter module; the cathode of the second diode is electrically connected to the output terminal of the battery power supply module; and the other end of the first capacitor and the other end of the first resistor are connected to the ground terminal.

[0012] In one possible implementation, the third rectifier unit includes a third diode, the fourth rectifier unit includes a fourth diode, and the second filter discharge unit includes a second capacitor and a second resistor; the negative terminal of the third diode is electrically connected to the output terminal of the first filter module, and the positive terminal of the third diode is electrically connected to the positive terminal of the fourth diode, one end of the second capacitor, and one end of the second resistor; the other end of the second capacitor and the other end of the second resistor are connected to a ground terminal; the negative terminal of the fourth diode serves as the second input terminal of the second filter module.

[0013] In one possible implementation, the first rectifier current limiting unit includes a fifth diode and a third resistor, the second rectifier current limiting unit includes a sixth diode and a fourth resistor, and the energy storage unit includes a third capacitor; the negative terminal of the fifth diode is electrically connected to the output terminal of the grid power supply module, and the positive terminal of the fifth diode is electrically connected to one end of the third resistor; the positive terminal of the sixth diode is electrically connected to the output terminal of the battery power supply module, and the negative terminal of the sixth diode is electrically connected to one end of the fourth resistor; the other end of the third resistor is electrically connected to the other end of the fourth resistor, one end of the third capacitor, the second input terminal of the second filter module, and the third input terminal of the second rectifier current limiting module; the other end of the third capacitor is connected to a ground terminal.

[0014] In one possible implementation, the third rectification and current limiting unit includes a seventh diode and a fifth resistor, the fourth rectification and current limiting unit includes an eighth diode and a sixth resistor, the fifth rectification unit includes a ninth diode, and the third filter and discharge unit includes a fourth capacitor and a seventh resistor; the cathode of the seventh diode is electrically connected to the output terminal of the mains power supply module, and the anode of the seventh diode is electrically connected to one end of the fifth resistor; the cathode of the eighth diode is electrically connected to the output terminal of the battery power supply module, and the anode of the eighth diode is electrically connected to one end of the sixth resistor; the other end of the fifth resistor is electrically connected to the other end of the sixth resistor, the anode of the ninth diode, one end of the fourth capacitor, and one end of the seventh resistor; the cathode of the ninth diode serves as the third input terminal of the second rectification and current limiting module; the other end of the fourth capacitor and the other end of the seventh resistor are connected to the ground terminal.

[0015] In one possible implementation, the fifth diode is multiplexed as the seventh diode, and the sixth diode is multiplexed as the eighth diode.

[0016] Secondly, embodiments of this application provide a centralized energy storage PCS power supply control method, applied to a centralized energy storage PCS power supply system as described in any of the first aspects, comprising: acquiring a first power supply voltage output by a grid power supply module and acquiring a second power supply voltage output by a battery power supply module; controlling a first filter module to output a first power supply voltage based on the first power supply voltage and the second power supply voltage, so that the first power supply voltage supplies power to the main circuit; controlling a first rectifier current limiting module to output a third power supply voltage based on the first power supply voltage and the second power supply voltage, so that the third power supply voltage provides energy storage voltage for the power supply system; controlling a second filter module to output a second power supply voltage after aligning the first power supply voltage and the third power supply voltage, so that after the grid power supply module and the battery power supply module stop supplying power, the second power supply voltage is used to supply power to critical circuits; and controlling a second rectifier current limiting module to output a fourth power supply voltage based on the first power supply voltage, the second power supply voltage, and the third power supply voltage, so that the fourth power supply voltage supplies power to downstream high-power circuits.

[0017] Thirdly, embodiments of this application provide a centralized energy storage PCS power supply device, the device comprising: a processor and a memory storing computer program instructions; the processor, when executing the computer program instructions, implements the centralized energy storage PCS power supply control method as described in the second aspect.

[0018] The centralized energy storage PCS power supply system, control method, and device of this application embodiment can provide dual power supply. By setting the output at the top, it charges the energy storage structure, reducing the charging time of the whole machine. At the same time, by using dual power supply and energy storage structure to provide high-power power to the downstream circuits, it can reduce the area occupied by the devices and reduce costs. Furthermore, in the event of abnormal power failure, the dual power supply and energy storage structure can still maintain power supply to the critical circuits and provide power for recording and saving critical data, effectively improving the power supply efficiency and reliability of the system. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of a centralized energy storage PCS power supply system provided in an embodiment of this application; Figure 2 This is a schematic diagram of another centralized energy storage PCS power supply system provided in the embodiments of this application; Figure 3 This is a schematic diagram of another centralized energy storage PCS power supply system provided in the embodiments of this application; Figure 4 This is a schematic diagram of the structure of a power grid supply module provided in an embodiment of this application; Figure 5 This is a schematic diagram of the structure of a battery-powered module provided in an embodiment of this application; Figure 6 This is a schematic diagram of another centralized energy storage PCS power supply system provided in the embodiments of this application; Figure 7 This is a schematic flowchart of a centralized energy storage PCS power supply control method provided in an embodiment of this application; Figure 8 This is a schematic diagram of a centralized energy storage PCS power supply device provided in an embodiment of this application. Detailed Implementation

[0021] The features and exemplary embodiments of various aspects of this application will be described in detail below. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain this application and not to limit it. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples.

[0022] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0023] A centralized power conversion system for energy storage refers to the power conversion system (PCS) in an energy storage power station. Its main function is to effectively control the electrical energy stored in energy storage devices such as battery packs so that it can be output as electrical energy when needed to supply power to the grid or end loads.

[0024] Centralized power storage systems (PCS) typically refer to a single high-power converter that can simultaneously manage multiple parallel-connected battery clusters. This type of PCS prioritizes high power output and high efficiency, making it suitable for large-scale energy storage projects, such as grid-scale applications. In a centralized power storage PCS system, all battery clusters are connected in parallel on the DC side, and power conversion is performed through one or a few high-power centralized power storage PCS systems.

[0025] Currently used centralized energy storage PCS power supply systems typically employ either independent battery input power supply or AC input rectification followed by battery input power supply. This approach has several drawbacks: Firstly, under most conditions, such as when fully charged, the battery voltage is higher than the rectified grid voltage, leading to preferential battery discharge and reduced battery capacity. Secondly, the battery itself does not generate electricity; the grid relies on power conversion within the centralized energy storage PCS for charging and discharging. Thirdly, centralized energy storage PCS experiences some losses during charging and discharging, resulting in lower energy utilization compared to direct grid power supply. Finally, a failure in the power conversion unit can render the entire system inoperable.

[0026] For centralized energy storage PCS power supply systems supplying power to inductive devices such as DC disconnect switches and AC circuit breakers, 220V and 24V power supply schemes are generally used. Both schemes use current-limiting resistors and capacitor banks for charging, with the capacitor banks providing power independently. This approach has the following drawbacks: First, the 220V power supply scheme requires an additional DC-DC voltage conversion device to convert the battery input to 220V, increasing costs. Second, the energy storage device in the 220V power supply scheme can only power the DC disconnect switches and circuit breakers, and cannot be reused to power other parts, resulting in low energy utilization. Finally, the 24V power supply scheme, because it uses a single power source, requires large capacitors to power the DC disconnect switches and AC circuit breakers, leading to large capacitor bank size, high cost, and long charging time.

[0027] Meanwhile, it is necessary to record fault waveforms and store power-down data such as black box data for centralized energy storage PCS. Currently, the conventional approach is to add a DC-DC converter to the 220V energy storage device that stores energy in the DC disconnect switch and AC circuit breaker to meet the requirements for recording and storing power-down data such as fault waveforms and data storage units. However, to simultaneously meet the energy storage requirements, the capacity of the energy storage device needs to be increased, leading to increased costs and reduced product reliability; alternatively, a capacitor board can be directly used to provide power for power-down delay, which meets the power-down delay power supply requirements; however, this will increase the size and cost, and also does not utilize power supply control.

[0028] To address the aforementioned technical problems, this application provides a centralized energy storage PCS power supply system, control method, and equipment, including a grid power supply module and a battery power supply module, achieving dual power supply. Through top-level processing, the first power output from the grid power supply module is greater than the second power output from the battery power supply module, enabling seamless switching when grid and battery power supplies are abnormal. Simultaneously, multiple supply voltages are provided to the system, improving power utilization. Furthermore, an energy storage structure is used to store electrical energy, recording and saving data when grid and battery anomalies occur. By combining grid power supply with battery power supply and energy storage structure power supply, the power output is increased, achieving high-power supply. The structure of the centralized energy storage PCS power supply system provided in this application's embodiments is described below.

[0029] Figure 1 This is a schematic diagram of a centralized energy storage PCS power supply system provided in an embodiment of this application. Figure 1 As shown, the structure of the centralized energy storage PCS power supply system 100 specifically includes: The system includes a mains power supply module 10, a battery power supply module 20, a first filter module 30, a second filter module 40, a first rectifier current limiting module 50, and a second rectifier current limiting module 60.

[0030] The input terminal of the power grid power supply module 10 is electrically connected to the power grid, and the output terminal of the power grid power supply module 10 is electrically connected to the first input terminal of the first filter module 30, the first input terminal of the first rectifier current limiting module 50, and the first input terminal of the second rectifier current limiting module 60. The power grid power supply module 10 is used to provide the first power supply voltage POWER1.

[0031] The input terminal of the battery power supply module 20 is electrically connected to the battery, and the output terminal of the battery power supply module 20 is electrically connected to the second input terminal of the first filter module 30, the second input terminal of the first rectifier current limiting module 50, and the second input terminal of the second rectifier current limiting module 60. The battery power supply module 20 is used to provide a second power supply voltage POWER2, ​​and the first power supply voltage POWER1 is greater than the second power supply voltage POWER2.

[0032] The output terminal of the first filter module 30 is electrically connected to the first input terminal of the second filter module 40. The first filter module 30 is used to filter the electrical signal output by the first power supply voltage POWER1 and the second power supply voltage POWER2 and then output the first power supply voltage DC1+.

[0033] The second input terminal of the second filter module 40 is electrically connected to the first output terminal of the first rectifier current limiting module 50. The second filter module 40 is used to provide the second power supply voltage DC2+.

[0034] The second output terminal of the first rectifier current limiting module 50 is electrically connected to the third input terminal of the second rectifier current limiting module 60. The first rectifier current limiting module 50 is used to provide a third power supply voltage DC3+ to the second rectifier current limiting module 60, and the second rectifier current limiting module 60 is used to provide a fourth power supply voltage DC4+.

[0035] The term "opposite output" here can be understood as the phenomenon of two voltages or currents flowing out in opposite directions. When the first power supply voltage output by the grid power supply module is set to be greater than the second power supply voltage output by the battery power supply module, the grid power supply is prioritized during dual-power supply. Only when the grid power supply is interrupted will the battery power supply be used, thereby improving power utilization.

[0036] The first power supply voltage POWER1 is preset to be greater than the second power supply voltage POWER2. Firstly, the first power supply voltage POWER1 is supplied to the first filter module 30 via the mains power supply module 10. Only when the mains power supply module 10 is de-energized is the second power supply voltage POWER2 supplied to the first filter module 30 via the battery power supply module 20, improving battery utilization. The first filter module outputs the first power supply voltage, providing a first voltage to the power supply system. The first and second power supply voltages then provide power to the first rectifier and current limiting module, which in turn provides a third power supply voltage. The first filter module and the first rectifier and current limiting module are used to control the output of the second filter module, controlling it to output a second power supply voltage. Finally, the first, second, and third power supply voltages from the first rectifier and current limiting module all provide power to the second rectifier and current limiting module, enabling it to output a fourth power supply voltage. This achieves power supply for high-power devices and provides four different power supply voltages to meet various power needs. At the same time, the first rectifier current limiting module is used for energy storage, which is used to delay the power supply to the power supply system in the event of abnormal power supply from the grid power supply module or the battery power supply module, giving time for data recording and storage processing.

[0037] In one possible example scenario, Figure 2 This is a schematic diagram of another centralized energy storage PCS power supply system provided in the embodiments of this application. Figure 2 This description is based on the above embodiments. Figure 2 The provided illustrations, and Figure 1The difference lies in the addition of a main power supply circuit 70, a critical power supply circuit 80, and a high-power load circuit 90. When the first filter module 30 outputs a first supply voltage DC1+, it provides power to the main power supply circuit 70. When the second filter module 40 is processed by the first supply voltage DC1+ and the third supply voltage DC3+, the second filter module 40 outputs a second supply voltage DC2+, which supplies power to the critical power supply circuit. Since the second filter module 40 receives power control from the first rectifier and current limiting module 50, and the first rectifier and current limiting module 50 contains an energy storage structure, in the event of an abnormal power outage of the mains power supply module 10 and the battery power supply module 20, the energy storage structure in the first rectifier and current limiting module 50 continues to provide power to the second filter module 40, ensuring that the second filter module 40 can still provide power to the critical power supply circuit 80. The second rectifier current limiting module 60 is connected to the high-power load circuit 90. The second rectifier current limiting module 60 receives the first power supply voltage POWER1, the second power supply voltage POWER2, ​​and the third power supply voltage DC3+ provided by the first rectifier current limiting module 50, so that the second rectifier current limiting module 60 outputs a high-power power supply voltage.

[0038] This application provides a centralized energy storage PCS power supply system that can provide dual power supply. By setting the output to the top, it charges the energy storage structure, reducing the charging time of the entire unit. At the same time, by utilizing the dual power supply and energy storage structure to provide high-power power to the downstream circuits, it can reduce the area occupied by the components and reduce costs. Furthermore, in the event of an abnormal power outage, the dual power supply and energy storage structure can still maintain power supply to critical circuits and provide power for recording and storing critical data, effectively improving the power supply efficiency and reliability of the system.

[0039] To further illustrate the structure of the centralized energy storage PCS power supply system, Figure 3 This is a schematic diagram of another centralized energy storage PCS power supply system provided in the embodiments of this application. Figure 3 The description is based on the first embodiment. Figure 3 The provided diagram shows that the centralized energy storage PCS power supply system specifically includes: The system includes a mains power supply module 10, a battery power supply module 20, a first filter module 30, a second filter module 40, a first rectifier and current limiting module 50, a second rectifier and current limiting module 60, a main power supply circuit 70, a key power supply circuit 80, and a high-power load circuit 90.

[0040] according to Figure 3 The diagram shows that the grid power supply module 10 in the centralized energy storage PCS power supply system includes a first rectifier and filter unit 110 and a first power conversion unit 120.

[0041] The first end of the first rectifier and filter unit 110 serves as the input end of the grid power supply module 10, the second end of the first rectifier and filter unit 110 is electrically connected to the input end of the first power conversion unit 120, and the output end of the first power conversion unit 120 serves as the output end of the grid power supply module 10.

[0042] The mains signal is filtered by the first rectifier and filter unit 110. The filtered signal is then input to the first power conversion unit 120 for voltage conversion, transforming it into a voltage that conforms to the operating range of the power supply voltage, thus obtaining the first power supply voltage POWER1. The first power supply voltage is then used to provide power to multiple power supply voltages.

[0043] Regarding the structure of the power grid supply module, in one possible example scenario, Figure 4 This is a schematic diagram of the structure of a power grid supply module provided in an embodiment of this application. According to... Figure 4 The provided diagram shows that the grid power supply module consists of three parts: a three-phase 690VAC grid, a rectifier and filter module 1, and a DC / DC power conversion unit 1. After the PCS inverter voltage or the grid-side voltage of 690VAC is rectified, the voltage is converted into POWER1 by the DC / DC power conversion unit 1 to supply power to the system.

[0044] according to Figure 3 The provided diagram shows that the battery power supply module 20 in the centralized energy storage PCS power supply system includes a second rectifier and filter unit 210 and a second power conversion unit 220.

[0045] The first end of the second rectifier and filter unit 210 serves as the input end of the battery power supply module 20, the second end of the second rectifier and filter unit 210 is electrically connected to the input end of the second power conversion unit 220, and the output end of the second power conversion unit 220 serves as the output end of the battery power supply module 20.

[0046] The battery signal is filtered by the second rectifier and filter unit 210. The filtered electrical signal is then input to the second power conversion unit 220 for voltage conversion, transforming it into a voltage that conforms to the operating range of the power supply voltage, thus obtaining the second power supply voltage POWER2. This second power supply voltage is then used to provide power to multiple power supply voltages.

[0047] Regarding the structure of the battery-powered module, in one possible example scenario, Figure 5 This is a schematic diagram of the structure of a battery-powered module provided in an embodiment of this application. According to... Figure 5The provided diagram shows that the battery power supply module consists of three parts: a 1000-1500Vdc battery, a rectifier and filter module 2, and a DC / DC power conversion unit 2. After rectification, the 1000-1500Vdc battery voltage is converted into POWER2 voltage by the DC / DC power conversion unit 2 to power the system.

[0048] Combination Figure 4 and Figure 5 In one possible scenario, the battery power supply is a 1500V input, with a DC voltage ranging from 1000V to 1500V. The mains power, after rectification and DC-DC power conversion, outputs POWER1 (25.5V), while the battery, after rectification and DC-DC power conversion, outputs POWER2 (23.5V). A comparison shows that the first power supply voltage is greater than the second, and POWER1 is 2V higher than POWER2, ​​achieving top-to-bottom output. The mains power prioritizes supplying DC1+. If any power conversion failure occurs during operation, it does not affect the overall normal operation of the device. Therefore, when both the mains and battery power are used simultaneously, the mains power is prioritized. In the event of a mains power failure or power outage, battery power is used, thus ensuring battery efficiency.

[0049] according to Figure 3 The provided diagram shows that the first filter module 30 in the centralized energy storage PCS power supply system includes a first rectifier unit 310, a second rectifier unit 320, and a first filter discharge unit 330.

[0050] The input terminal of the first rectifier unit 310 is electrically connected to the output terminal of the power grid module 10, and the output terminal of the first rectifier unit 310 is electrically connected to the input terminal of the second filter module 40.

[0051] The input terminal of the second rectifier unit 320 is electrically connected to the output terminal of the battery power supply module 20, and the output terminal of the second rectifier unit 320 is electrically connected to the input terminal of the second filter module 40.

[0052] The first filter discharge unit 330 is electrically connected to the output terminal of the first rectifier unit 310 and the output terminal of the second rectifier unit 320.

[0053] The first rectifier unit filters the first power supply voltage input to the grid-connected module. The second rectifier unit filters the second power supply voltage input to the battery-connected module. The first filter discharge unit discharges based on the first power supply voltage, i.e., it outputs the first power supply voltage.

[0054] The first power supply POWER1 (25.5V) and the second power supply POWER2 (23.5V) supply power the main power supply circuit 70 system after being output-paired. Since POWER1 has a voltage 2V higher than POWER2, ​​the first power supply voltage DC1+ is preferentially provided by the grid power supply path. This grid-priority power supply avoids the loss of power from the grid to charge the battery through the centralized energy storage PCS, which would reduce energy utilization and affect battery discharge time. During the operation of the whole machine, when the grid power supply conversion circuit fails, the battery power supply POWER2 can seamlessly switch to the main power supply without affecting the normal operation of the whole machine, thus enhancing the power supply reliability of the whole machine.

[0055] The first rectifier unit rectifies the first power supply voltage output from the grid power supply module and outputs it to the first filter and discharge unit; the second rectifier unit rectifies the second power supply voltage output from the battery power supply module and outputs it to the first filter and discharge unit. The first filter and discharge unit then uses the signals output from the first and second rectifier units as the first power supply voltage, which is used to provide power to the main power supply circuit.

[0056] according to Figure 3 The provided diagram shows that the second filter module 40 in the centralized energy storage PCS power supply system includes a third rectifier unit 410, a fourth rectifier unit 420, and a second filter discharge unit 430.

[0057] The input terminal of the third rectifier unit 410 serves as the first input terminal of the second filter module 40, and the output terminal of the third rectifier unit 410 is electrically connected to the output terminal of the fourth rectifier unit 420 and the input terminal of the second filter discharge unit 430.

[0058] The input terminal of the fourth rectifier unit 420 serves as the second input terminal of the second filter module 40.

[0059] according to Figure 3 As shown in the diagram, the second filter module 40 is not controlled by the first power supply voltage POWER1 and the second power supply voltage POWER2, ​​but only by the first power supply voltage DC1+ output by the first filter module 30 and the third power supply voltage DC3+ output by the first rectifier current limiting module 50. Through the top-down output of the first power supply voltage DC1+ and the third power supply voltage DC3+, the first power supply voltage DC1+ is input to the third rectifier unit 410, and the third power supply voltage DC3+ is input to the fourth rectifier unit 420. Through the top-down output of the third rectifier unit 410 and the fourth rectifier unit 420, the second power supply voltage DC2+ is output, and the second filter discharge unit 430 supplies power to the key power supply circuit 80.

[0060] In this embodiment, the third and fourth rectifier units output a second supply voltage to power the critical power supply circuit. When the mains power supply and battery power supply fail abnormally, the second supply voltage output by the first rectifier current limiting module is applied to the fourth rectifier unit, so that the fourth rectifier unit continues to supply power to the critical power supply circuit, thereby realizing data recording and storage.

[0061] according to Figure 3 The provided diagram shows that the first rectifier current limiting module 50 in the centralized energy storage PCS power supply system includes a first rectifier current limiting unit 510, a second rectifier current limiting unit 520, and an energy storage unit 530.

[0062] The input terminal of the first rectifier current limiting unit 510 serves as the first input terminal of the first rectifier current limiting module 50, and the output terminal of the first rectifier current limiting unit 510 is electrically connected to the second input terminal of the second filter module 40 and the input terminal of the second rectifier current limiting module 60.

[0063] The input terminal of the second rectifier current limiting unit 520 serves as the second input terminal of the first rectifier current limiting module 50, and the output terminal of the second rectifier current limiting unit 520 is electrically connected to the second input terminal of the second filter module 40 and the input terminal of the second rectifier current limiting module 60.

[0064] The energy storage unit 530 is electrically connected to the output terminal of the first rectifier and current limiting unit 510, the output terminal of the second rectifier and current limiting unit 520, the second input terminal of the second filter module 40, and the third input terminal of the second rectifier and current limiting module 60.

[0065] The first and second rectification and current limiting units are used to rectify and limit the current of electrical signals.

[0066] according to Figure 3The provided diagram shows that the first power supply voltage POWER1 is output through the grid power supply module 10, and the first rectifier and current limiting unit 510 rectifies and limits the first power supply voltage POWER1 to power the energy storage unit 530; or, when using battery power, the second power supply voltage POWER2 is output through the battery power supply module 20, and the second rectifier and current limiting unit 520 rectifies and limits the second power supply voltage POWER2 to power the energy storage unit 530. Regardless of whether battery power or grid power is used, the energy storage unit 530 is powered. In the event of an abnormal disconnection between battery power and grid power, the energy storage unit 530 can provide a third power supply voltage DC3+ to the system. Furthermore, the energy storage unit 530 delays power supply to the second filter module 40, effectively recording and storing data, acting as a black box. At the same time, the energy storage unit 530 is connected to the second rectifier and current limiting module 60 to provide power to the second rectifier and current limiting module 60, increase the output power, and achieve the purpose of powering high-power devices. This reduces the product size without increasing the number of devices.

[0067] This application adds an energy storage unit to the first rectifier current limiting module to store the first power supply voltage provided by the grid power supply module and the second power supply voltage provided by the battery power supply module, thereby achieving the function of energy storage; and in the event of power supply abnormality, the energy storage unit independently supplies power to the critical power supply circuit, thereby achieving the purpose of recording and storing data.

[0068] according to Figure 3 The provided diagram shows that the second rectifier current limiting module 60 in the centralized energy storage PCS power supply system includes a third rectifier current limiting unit 610, a fourth rectifier current limiting unit 620, a fifth rectifier unit 630, and a third filter discharge unit 640.

[0069] The input terminal of the third rectifier current limiting unit 610 serves as the first input terminal of the second rectifier current limiting module 60, and the output terminal of the third rectifier current limiting unit 610 is electrically connected to the output terminal of the fifth rectifier unit 630.

[0070] The input terminal of the fourth rectifier current limiting unit 620 serves as the second input terminal of the second rectifier current limiting module 60, and the output terminal of the fourth rectifier current limiting unit 620 is electrically connected to the output terminal of the fifth rectifier unit 630.

[0071] The input terminal of the fifth rectifier unit 630 serves as the third input terminal of the second rectifier current limiting module 60.

[0072] The third filter discharge unit 640 is electrically connected to the output terminals of the third rectifier current limiting unit 610, the fourth rectifier current limiting unit 620, and the fifth rectifier unit 630.

[0073] according to Figure 3The provided diagram shows that the mains power supply module outputs a first power supply voltage, POWER1, to the third rectifier and current limiting unit 610. After rectification and current limiting by the third rectifier and current limiting unit 610, and then rectification by the fifth rectifier unit 630, a fourth power supply voltage, DC4+, is output. This voltage then supplies power to the high-power load circuit through the third filter and discharge unit, providing a high-power signal. Simultaneously, when the mains power supply is interrupted, the battery power supply module provides a second power supply voltage, POWER2, ​​to the fourth rectifier and current limiting unit 620. The fourth rectifier and current limiting unit 620 then outputs the electrical signal to the fifth rectifier unit. After further rectification, the fourth power supply voltage, DC4+, is output, similarly providing high-power energy to the third filter and discharge unit.

[0074] By setting up a fifth rectifier unit, the first power supply voltage provided by the grid power supply module and the second power supply voltage provided by the battery power supply module are integrated, and with the help of the third power supply voltage provided by the first rectifier current limiting module, high-power power supply energy is obtained, so as to achieve the purpose of powering high-power circuits.

[0075] This application provides a centralized energy storage PCS power supply system, which improves power utilization by setting up dual power supply; provides multiple power supply voltages to improve the practical application scenarios of power supply; and by adding energy storage units, it delays power supply when the grid power supply and battery power supply are abnormal, effectively realizes data recording and storage, provides high-power power to high-power circuits, reduces the size of energy storage devices, and thus achieves the goal of reducing production costs.

[0076] To further illustrate the structure of the centralized energy storage PCS power supply system, Figure 6 This is a schematic diagram of another centralized energy storage PCS power supply system provided in the embodiments of this application. Figure 6 This is based on the previous embodiment. Figure 6 The provided diagram shows the structure of a centralized energy storage PCS power supply system, including: First power supply voltage POWER1, second power supply voltage POWER2, ​​first rectifier unit 310, second rectifier unit 320, first filter and discharge unit 330, third rectifier unit 410, fourth rectifier unit 420, second filter and discharge unit 430, first rectifier current limiting unit 510, second rectifier current limiting unit 520, energy storage unit 530, third rectifier current limiting unit 610, fourth rectifier current limiting unit 620, fifth rectifier unit 630, third filter and discharge unit 640, main power supply circuit 70, key power supply circuit 80, high-power load circuit 90.

[0077] according to Figure 6The provided diagram shows that the first rectifier unit 310 in the centralized energy storage PCS power supply system includes a first diode D1, the second rectifier unit 320 includes a second diode D2, and the first filter discharge unit 330 includes a first capacitor C1 and a first resistor R1.

[0078] The negative terminal of the first diode D1 is electrically connected to the output terminal of the mains power supply module 10, and the positive terminal of the first diode D1 is electrically connected to the positive terminal of the second diode D2, one end of the first capacitor C1, one end of the first resistor R1, and the input terminal of the second filter module 40.

[0079] The negative terminal of the second diode D2 is electrically connected to the output terminal of the battery power supply module 20.

[0080] The other end of the first capacitor C1 and the other end of the first resistor R1 are connected to the ground terminal GND.

[0081] The main power supply circuit is powered by a mains power supply module 20. The mains power supply module outputs a first power voltage POWER1 (e.g., set to 25.5V), and the battery power supply module outputs a second power voltage POWER2 (e.g., set to 23.5V). The first power voltage POWER1 is output through a first diode D1, and the second power voltage POWER2 is output through a second diode D2. The outputs are then connected to the main power supply circuit via a first capacitor C1. Since the first power voltage POWER1 is 2V higher than the second power voltage POWER2, ​​the first power supply voltage DC1+ is preferentially supplied by the mains power supply module 10. This grid-priority supply avoids energy loss during battery charging via the centralized energy storage PCS, reducing energy utilization and battery discharge time. During operation, if the mains power supply module 10 malfunctions, the second power voltage POWER2 provided by the battery power supply module 20 can seamlessly switch to main power supply without affecting normal operation, thus enhancing the overall power supply reliability. When the device is powered down, the first resistor R1 provides a discharge path for the first power supply voltage DC1+.

[0082] By setting up dual power supply, the power supply utilization rate is improved, and by setting the top output, the grid is given priority, effectively reducing battery energy consumption.

[0083] according to Figure 6 The provided diagram shows that the third rectifier unit 410 in the centralized energy storage PCS power supply system includes a third diode D3, the fourth rectifier unit 420 includes a fourth diode D4, and the second filter discharge unit 430 includes a second capacitor C2 and a second resistor R2.

[0084] The negative terminal of the third diode D3 is electrically connected to the output terminal of the first filter module 30, and the positive terminal of the third diode D3 is electrically connected to the positive terminal of the fourth diode D4, one end of the second capacitor C2, and one end of the second resistor R2.

[0085] The other end of the second capacitor C2 and the other end of the second resistor R2 are connected to the ground terminal GND.

[0086] The negative terminal of the fourth diode D4 serves as the second input terminal of the second filter module 40.

[0087] according to Figure 6 The provided diagram shows that the first supply voltage DC1+ supplies power to the second supply voltage DC2+ through the third diode D3, while the third supply voltage DC3+ supplies power to the second supply voltage DC2+ through the fourth diode D4. The first and third supply voltages DC1+ and DC3+ are output to the second supply voltage DC2+ via a combined output. This ensures that the critical power supply circuit 80 can effectively guarantee delayed power supply when both the mains and battery power supplies are abnormal, thus ensuring fault filtering and enabling the recording and storage of critical data. When both the battery and mains power are down, the second capacitor C2 can be discharged through the second resistor R2.

[0088] By setting a second power supply voltage, energy can still be provided to the second power supply voltage through the energy storage unit when the grid power supply module and the battery power supply module experience abnormal power failure, ensuring delayed power supply to critical power supply circuits and recording and storing critical data.

[0089] according to Figure 6 The provided diagram shows that the first rectifier and current limiting unit 510 in the centralized energy storage PCS power supply system includes a fifth diode D5 and a third resistor R3, the second rectifier and current limiting unit 520 includes a sixth diode D6 and a fourth resistor R4, and the energy storage unit 530 includes a third capacitor C3.

[0090] The negative terminal of the fifth diode D5 is electrically connected to the output terminal of the mains power supply module 10, and the positive terminal of the fifth diode D5 is electrically connected to one end of the third resistor R3.

[0091] The positive terminal of the sixth diode D6 is electrically connected to the output terminal of the battery power supply module 20, and the negative terminal of the sixth diode D6 is electrically connected to one end of the fourth resistor R4.

[0092] The other end of the third resistor R3 is electrically connected to the other end of the fourth resistor R4, one end of the third capacitor C3, the second input terminal of the second filter module 40, and the third input terminal of the second rectifier current limiting module 60.

[0093] The other end of the third capacitor C3 is connected to the ground terminal GND.

[0094] according to Figure 6The provided diagram shows that the grid power supply module 10 outputs a first power supply voltage POWER1 after rectification, which charges the third capacitor C3 in the energy storage unit after passing through the fifth diode D5 and the third resistor R3. The battery power supply module 20 outputs a second power supply voltage POWER2 after rectification, which charges the third capacitor C3 in the energy storage unit after passing through the sixth diode D6 and the fourth resistor R4.

[0095] When either the battery power supply module or the grid power supply module is operating, the first power supply voltage POWER1 and the second power supply voltage POWER2 charge the third capacitor C3 (third power supply voltage DC3+) through diodes and current-limiting resistors, respectively. Each can independently charge the third capacitor C3 in the energy storage unit, thereby reducing the capacitor charging delay time during system startup. Due to the presence of the fifth diode D5, the sixth diode D6, and the fourth diode D4, and the single-phase conduction of the diodes, the discharge of the third power supply voltage DC3+ will not affect the power supply stability of the first power supply voltage DC1+ and the second power supply voltage DC2+. Furthermore, by using the first power supply voltage POWER1 and the second power supply voltage POWER2, ​​along with the diodes, current-limiting resistors, and the third capacitor C3, power is supplied to the fourth power supply voltage DC4+, increasing the power output and meeting the instantaneous high-power requirements of circuit breakers, disconnectors, and other devices in high-power centralized energy storage PCS.

[0096] This application utilizes a third capacitor as an energy storage unit, ensuring the implementation of functions such as fault filtering and data storage. Furthermore, by supplying power to the second power supply voltage DC2+ via the first and third power supply voltages DC1+ and DC3+, it enables delayed power supply to critical circuits when both the mains power module and battery power module experience simultaneous power failures, thus guaranteeing product reliability, safety, and stability.

[0097] according to Figure 6 The provided diagram shows that the third rectifier and current limiting unit 610 in the centralized energy storage PCS power supply system includes a seventh diode D7 and a fifth resistor R5, the fourth rectifier and current limiting unit 620 includes an eighth diode D8 and a sixth resistor R6, the fifth rectifier unit 630 includes a ninth diode D9, and the third filter and discharge unit 640 includes a fourth capacitor C4 and a seventh resistor R7.

[0098] The negative terminal of the seventh diode D7 is electrically connected to the output terminal of the mains power supply module 10, and the positive terminal of the seventh diode D7 is electrically connected to one end of the fifth resistor R5.

[0099] The negative terminal of the eighth diode D8 is electrically connected to the output terminal of the battery power supply module 20, and the positive terminal of the eighth diode D8 is electrically connected to one end of the sixth resistor R6.

[0100] The other end of the fifth resistor R5 is electrically connected to the other end of the sixth resistor R6, the positive terminal of the ninth diode D9, one end of the fourth capacitor C4, and one end of the seventh resistor R7.

[0101] The negative terminal of the ninth diode D9 serves as the third input terminal of the second rectifier current limiting module 60.

[0102] The other end of the fourth capacitor C4 and the other end of the seventh resistor R7 are connected to the ground terminal GND.

[0103] according to Figure 6 The provided diagram shows that the first power supply voltage is rectified and filtered by the seventh diode and the fifth resistor, and then supplies power to the fourth power supply voltage. At the same time, the second power supply voltage is rectified and filtered by the eighth diode and the sixth resistor, and then supplies power to the fourth power supply voltage. Meanwhile, the third capacitor in the energy storage unit supplies power to the fourth power supply voltage through the ninth diode, thereby outputting a high-power electrical signal to achieve the purpose of supplying power to the high-power load circuit.

[0104] In one possible scenario, after rectification and current limiting by the sixth diode and the sixth resistor, the current is then filtered by the fourth capacitor C4 before supplying power to the DC disconnect switch or AC circuit breaker (i.e., the high-power load circuit). When selecting the value of the current-limiting resistor, the difference between the DC-DC conversion power and the actual power of the first supply voltage DC1+ during operation should be used as the selection criterion.

[0105] When the entire machine is operating normally, the first power supply voltage POWER1 and the second power supply voltage POWER2, ​​together with diodes, current-limiting resistors, the third capacitor C3, and the ninth diode D9, supply power to the fourth power supply voltage DC4+, thereby increasing the power and meeting the instantaneous high power requirements of circuit breakers, disconnectors, and other devices in high-power PCS. This effectively reduces the capacitance of the capacitors on the capacitor board, decreases the capacitor size, and shortens the capacitor charging time. When both the battery power supply module and the grid power supply module are powered down, the fourth capacitor C4 can be discharged through the ninth diode R9.

[0106] according to Figure 6 The provided diagram shows that in the centralized energy storage PCS power supply system, the fifth diode D5 is reused as the seventh diode D7, and the sixth diode D6 is reused as the eighth diode D8.

[0107] To save production costs and reduce size, diodes with the same conduction direction are used in both the third and first rectifier current limiting units. This allows the fifth and seventh diodes to be reused, replacing two diodes with only one, which effectively improves production efficiency.

[0108] Using the same design, diodes with the same conduction direction are used in both the second and fourth rectifier current limiting units. In order to save costs and reduce size, the sixth diode D6 and the eighth diode D8 are replaced by a single diode, reducing one diode. The rectification effect is achieved by multiplexing.

[0109] This application provides a centralized energy storage PCS power supply system. By rectifying and filtering the power from the grid power supply module and the battery power supply module, multiple supply voltages are obtained to meet various power supply needs. Through capacitor energy storage, the system can still delay the power supply time when the battery power supply module and the grid power supply module experience abnormal power failure, thereby recording and saving key data. At the same time, by using grid power supply, battery power supply and energy storage capacitor power supply, the system can achieve the purpose of high-power supply and improve power supply efficiency.

[0110] Figure 7 This is a flowchart illustrating a centralized energy storage PCS power supply control method provided in an embodiment of this application. The method is based on a centralized energy storage PCS power supply system. Figure 7 The provided diagram illustrates the steps of the centralized energy storage PCS power supply control method, including: S701. Obtain the first power supply voltage output by the grid power supply module and the second power supply voltage output by the battery power supply module.

[0111] S702. Based on the first power supply voltage and the second power supply voltage, the first filter module is controlled to output the first power supply voltage so that the first power supply voltage powers the main circuit.

[0112] The circuit is powered by dual power supplies, with the first power supply voltage set to be greater than the second power supply voltage. The first power supply voltage is output by aligning the first and second power supply voltages to provide power to the main power supply circuit.

[0113] S703: Based on the first power supply voltage and the second power supply voltage, control the first rectifier current limiting module to output a third power supply voltage so that the third power supply voltage provides energy storage voltage for the power supply system.

[0114] By setting a third supply voltage, energy can be stored for the power supply system, regardless of whether it is powered by battery or grid.

[0115] S704. After aligning the first power supply voltage and the third power supply voltage, control the second filter module to output the second power supply voltage so that after the grid power supply module and the battery power supply module stop supplying power, the second power supply voltage is used to supply power to the critical circuit.

[0116] The second supply voltage is output after the first and third supply voltages are processed together. Even in abnormal grid and battery conditions, the energy storage structure can still supply the second supply voltage with a delay, thereby achieving the effect of data recording and storage.

[0117] S705 controls the second rectifier current limiting module to output a fourth power supply voltage based on the first power supply voltage, the second power supply voltage, and the third power supply voltage, so that the fourth power supply voltage supplies power to the subsequent high-power circuit.

[0118] By connecting multiple power supply structures to the fourth power supply voltage, the output power of the fourth power supply voltage is increased, thereby meeting the power supply requirements of high-power loads.

[0119] This application provides a centralized energy storage PCS power supply control method, employing dual power supply to increase power redundancy and improve the stability and reliability of the energy storage converter. By rationally utilizing grid power supply current limiting, battery power supply current limiting, and capacitor discharge in the energy storage unit to supply power to inductive loads with high instantaneous power during energy storage, such as DC disconnect switches and AC circuit breakers, the instantaneous power of the power supply system is effectively enhanced. Simultaneously, the number and volume of capacitors in the energy storage unit are reduced, shortening the charging time of the capacitor plate upon power-up. During operation and standby of the centralized energy storage PCS power supply system, grid power is prioritized, reducing battery power consumption and improving the overall energy conversion efficiency. By fully utilizing grid power supply, battery power supply, and energy storage capacitor discharge, this application can automatically switch to energy storage capacitor power supply when both grid and battery power supply malfunction during operation. This ensures data recording and preservation of critical control circuits, effectively preventing control logic disorder and subsequent abnormal waveforms that could damage the entire unit, thus improving power supply safety and stability.

[0120] Figure 8 This is a schematic diagram of a centralized energy storage PCS power supply device provided in an embodiment of this application. The centralized energy storage PCS power supply device may include a processor 801 and a memory 802 storing computer program instructions.

[0121] Specifically, the processor 801 may include a central processing unit (CPU), an application-specific integrated circuit (ASIC), or one or more integrated circuits that can be configured to implement the embodiments of this application.

[0122] Memory 802 may include mass storage for data or instructions. For example, and not limitingly, memory 802 may include a hard disk drive (HDD), floppy disk drive, flash memory, optical disk, magneto-optical disk, magnetic tape, or Universal Serial Bus (USB) drive, or a combination of two or more of these. Where appropriate, memory 802 may include removable or non-removable (or fixed) media. Where appropriate, memory 802 may be internal or external to the integrated gateway disaster recovery device. In a particular embodiment, memory 802 is non-volatile solid-state memory.

[0123] The memory may include read-only memory (ROM), random access memory (RAM), disk storage media devices, optical storage media devices, flash memory devices, and electrical, optical, or other physical / tangible memory storage devices. Therefore, typically, memory includes one or more tangible (non-transitory) computer-readable storage media (e.g., memory devices) encoded with software including computer-executable instructions, and when the software is executed (e.g., by one or more processors), it is operable to perform the operations described with reference to the centralized energy storage PCS power supply control method according to this disclosure.

[0124] The processor 801 reads and executes computer program instructions stored in the memory 802 to implement any of the centralized energy storage PCS power supply control methods in the above embodiments.

[0125] In one example, the centralized energy storage PCS power supply device may also include a communication interface 803 and a bus 810. For example, Figure 8 As shown, the processor 801, memory 802, and communication interface 803 are connected through bus 810 and complete communication with each other.

[0126] The communication interface 803 is mainly used to realize communication between various modules, devices, units and / or equipment in the embodiments of this application.

[0127] Bus 810 includes hardware, software, or both, that couples components of an online data traffic metering device together. For example, and not limitingly, the bus may include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), HyperTransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an Infinite Bandwidth Interconnect, a Low Pin Count (LPC) bus, a memory bus, a Microchannel Architecture (MCA) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a Video Electronics Standards Association Local (VLB) bus, or other suitable buses, or combinations of two or more of these. Where appropriate, bus 810 may include one or more buses. Although specific buses are described and illustrated in embodiments of this application, any suitable bus or interconnect is contemplated herein.

[0128] Furthermore, in conjunction with the centralized energy storage PCS power supply control method in the above embodiments, this application embodiment can provide a computer storage medium for implementation. The computer storage medium stores computer program instructions; when these computer program instructions are executed by a processor, they implement any of the centralized energy storage PCS power supply control methods in the above embodiments.

[0129] This application also provides a computer program product, including a computer program, which, when executed, implements any of the centralized energy storage PCS power supply control methods described in the above embodiments.

[0130] It should be clarified that this application is not limited to the specific configurations and processes described above and shown in the figures. For the sake of brevity, detailed descriptions of known methods are omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of this application is not limited to the specific steps described and shown. Those skilled in the art can make various changes, modifications, and additions, or change the order of steps, after understanding the spirit of this application.

[0131] The functional blocks shown in the above-described structural diagram can be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, they can be, for example, electronic circuits, application-specific integrated circuits (ASICs), appropriate firmware, plug-ins, function cards, etc. When implemented in software, the elements of this application are programs or code segments used to perform the required tasks. Programs or code segments can be stored on a machine-readable medium or transmitted over a transmission medium or communication link via data signals carried on a carrier wave. "Machine-readable medium" can include any medium capable of storing or transmitting information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, radio frequency (RF) links, etc. Code segments can be downloaded via computer networks such as the Internet, intranets, etc.

[0132] It should also be noted that the exemplary embodiments mentioned in this application describe methods or systems based on a series of steps or apparatus. However, this application is not limited to the order of the above steps; that is, the steps can be performed in the order mentioned in the embodiments, or in a different order, or several steps can be performed simultaneously.

[0133] The aspects of this application have been described above with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It should be understood that each block in the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing apparatus to produce a machine such that these instructions, executable via the processor of the computer or other programmable data processing apparatus, enable the implementation of the functions / actions specified in one or more blocks of the flowchart illustrations and / or block diagrams. Such a processor can be, but is not limited to, a general-purpose processor, a special-purpose processor, a special application processor, or a field-programmable logic circuit. It is also understood that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can also be implemented by dedicated hardware performing the specified functions or actions, or can be implemented by a combination of dedicated hardware and computer instructions.

[0134] The above description is merely a specific implementation of this application. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the protection scope of this application.

Claims

1. A centralized energy storage PCS power supply system, characterized by, The power grid power supply module, the battery power supply module, the first filter module, the second filter module, the first rectification current limiting module and the second rectification current limiting module are included. The input end of the power grid power supply module is electrically connected with the power grid, the output end of the power grid power supply module is electrically connected with the first input end of the first filter module, the first input end of the first rectification current limiting module and the first input end of the second rectification current limiting module, and the power grid power supply module is used for providing a first power supply voltage. The input end of the battery power supply module is electrically connected with the battery, the output end of the battery power supply module is electrically connected with the second input end of the first filter module, the second input end of the first rectification current limiting module and the second input end of the second rectification current limiting module, and the battery power supply module is used for providing a second power supply voltage. The output end of the first filter module is electrically connected with the first input end of the second filter module, and the first filter module is used for filtering and outputting a first power supply voltage after the first power supply voltage and the second power supply voltage are superimposed. The second input end of the second filter module is electrically connected with the first output end of the first rectification current limiting module, and the second filter module is used for providing a second power supply voltage. The second output end of the first rectification current limiting module is electrically connected with the third input end of the second rectification current limiting module, the first rectification current limiting module is used for providing a third power supply voltage to the second rectification current limiting module, and the second rectification current limiting module is used for providing a fourth power supply voltage. The power grid power supply module includes a first rectification filter unit and a first power conversion unit.

2. The centralized energy storage PCS power supply system of claim 1, wherein, The first end of the first rectification filter unit is used as the input end of the power grid power supply module, the second end of the first rectification filter unit is electrically connected with the input end of the first power conversion unit, and the output end of the first power conversion unit is used as the output end of the power grid power supply module. And / or, the battery power supply module includes a second rectification filter unit and a second power conversion unit. The first end of the second rectification filter unit is used as the input end of the battery power supply module, the second end of the second rectification filter unit is electrically connected with the input end of the second power conversion unit, and the output end of the second power conversion unit is used as the output end of the battery power supply module. The first filter module includes a first rectification unit, a second rectification unit and a first filter discharge unit.

3. The centralized energy storage PCS power supply system of claim 1, wherein, The input end of the first rectification unit is electrically connected with the output end of the power grid power supply module, and the output end of the first rectification unit is electrically connected with the input end of the second filter module. The input end of the second rectification unit is electrically connected with the output end of the battery power supply module, and the output end of the second rectification unit is electrically connected with the input end of the second filter module. The first filter discharge unit is electrically connected with the output end of the first rectification unit and the output end of the second rectification unit. The second filter module includes a third rectification unit, a fourth rectification unit and a second filter discharge unit.

4. The centralized energy storage PCS power supply system of claim 1, wherein, ​ The input end of the third rectifying unit is the first input end of the second filtering module, and the output end of the third rectifying unit is electrically connected with the output end of the fourth rectifying unit and the input end of the second filtering and discharging unit. The input end of the fourth rectifying unit is the second input end of the second filtering module.

5. The centralized energy storage PCS power supply system of claim 1, wherein, The first rectifying and current-limiting module comprises a first rectifying and current-limiting unit, a second rectifying and current-limiting unit and an energy storage unit; The input end of the first rectifying and current-limiting unit is the first input end of the first rectifying and current-limiting module, and the output end of the first rectifying and current-limiting unit is electrically connected with the second input end of the second filtering module and the input end of the second rectifying and current-limiting module; The input end of the second rectifying and current-limiting unit is the second input end of the first rectifying and current-limiting module, and the output end of the second rectifying and current-limiting unit is electrically connected with the second input end of the second filtering module and the input end of the second rectifying and current-limiting module; The energy storage unit is electrically connected with the output end of the first rectifying and current-limiting unit, the output end of the second rectifying and current-limiting unit, the second input end of the second filtering module and the third input end of the second rectifying and current-limiting module.

6. The centralized energy storage PCS power supply system of claim 1, wherein, The second rectifying and current-limiting module comprises a third rectifying and current-limiting unit, a fourth rectifying and current-limiting unit, a fifth rectifying unit and a third filtering and discharging unit; The input end of the third rectifying and current-limiting unit is the first input end of the second rectifying and current-limiting module, and the output end of the third rectifying and current-limiting unit is electrically connected with the output end of the fifth rectifying unit; The input end of the fourth rectifying and current-limiting unit is the second input end of the second rectifying and current-limiting module, and the output end of the fourth rectifying and current-limiting unit is electrically connected with the output end of the fifth rectifying unit; The input end of the fifth rectifying unit is the third input end of the second rectifying and current-limiting module; The third filtering and discharging unit is electrically connected with the output end of the third rectifying and current-limiting unit, the output end of the fourth rectifying and current-limiting unit and the output end of the fifth rectifying unit.

7. The centralized energy storage PCS power supply system of claim 3, wherein, The first rectifying unit comprises a first diode, the second rectifying unit comprises a second diode, and the first filtering and discharging unit comprises a first capacitor and a first resistor; The negative electrode of the first diode is electrically connected with the output end of the power grid power supply module, and the positive electrode of the first diode is electrically connected with the positive electrode of the second diode, one end of the first capacitor, one end of the first resistor and the input end of the second filtering module; The negative electrode of the second diode is electrically connected with the output end of the battery power supply module; The other end of the first capacitor and the other end of the first resistor are connected to a ground end.

8. The centralized energy storage PCS power supply system of claim 4, wherein, The third rectifying unit comprises a third diode, the fourth rectifying unit comprises a fourth diode, and the second filtering and discharging unit comprises a second capacitor and a second resistor; The negative electrode of the third diode is electrically connected with the output end of the first filtering module, and the positive electrode of the third diode is electrically connected with the positive electrode of the fourth diode, one end of the second capacitor and one end of the second resistor; The other end of the second capacitor and the other end of the second resistor are connected to a ground end. The negative electrode of the fourth diode is used as the second input end of the second filter module.

9. The centralized energy storage PCS power supply system of claim 5, wherein, The first rectification current limiting unit comprises a fifth diode and a third resistor, the second rectification current limiting unit comprises a sixth diode and a fourth resistor, and the energy storage unit comprises a third capacitor; The negative electrode of the fifth diode is electrically connected to the output end of the grid power supply module, and the positive electrode of the fifth diode is electrically connected to one end of the third resistor; The positive electrode of the sixth diode is electrically connected to the output end of the battery power supply module, and the negative electrode of the sixth diode is electrically connected to one end of the fourth resistor; The other end of the third resistor is electrically connected to the other end of the fourth resistor, one end of the third capacitor, the second input end of the second filter module, and the third input end of the second rectification current limiting module. The other end of the third capacitor is connected to a ground end.

10. The centralized energy storage PCS power supply system of claim 6, wherein, The third rectification current limiting unit comprises a seventh diode and a fifth resistor, the fourth rectification current limiting unit comprises an eighth diode and a sixth resistor, the fifth rectification unit comprises a ninth diode, and the third filter discharge unit comprises a fourth capacitor and a seventh resistor; The negative electrode of the seventh diode is electrically connected to the output end of the grid power supply module, and the positive electrode of the seventh diode is electrically connected to one end of the fifth resistor; The negative electrode of the eighth diode is electrically connected to the output end of the battery power supply module, and the positive electrode of the eighth diode is electrically connected to one end of the sixth resistor; The other end of the fifth resistor is electrically connected to the other end of the sixth resistor, the positive electrode of the ninth diode, one end of the fourth capacitor, and one end of the seventh resistor. The negative electrode of the ninth diode is used as the third input end of the second rectification current limiting module. The other end of the fourth capacitor and the other end of the seventh resistor are connected to a ground end.

11. The centralized energy storage PCS power supply system of claim 9 or 10, wherein, The fifth diode is multiplexed as the seventh diode, and the sixth diode is multiplexed as the eighth diode.

12. A centralized energy storage PCS power supply control method, characterized by, The application is applied to the centralized energy storage PCS power supply system as claimed in any one of claims 1-11, comprising: a first power supply voltage output by the grid power supply module is acquired, and a second power supply voltage output by the battery power supply module is acquired; the first power supply voltage and the second power supply voltage are used to control a first filter module to output a first power supply voltage, so that the first power supply voltage is used to supply power to a main circuit; the first power supply voltage and the second power supply voltage are used to control a first rectification current limiting module to output a third power supply voltage, so that the third power supply voltage is used to provide an energy storage voltage for the power supply system; the first power supply voltage and the third power supply voltage are subjected to a complementary processing, and then the second filter module is controlled to output a second power supply voltage, so that the grid power supply module and the battery power supply module stop supplying power, and the second power supply voltage is used to supply power to a key circuit; the first power supply voltage, the second power supply voltage, and the third power supply voltage are used to control a second rectification current limiting module to output a fourth power supply voltage, so that the fourth power supply voltage is used to supply power to a high-power circuit at a later stage.

13. A centralized energy storage PCS power supply device, characterized by, The device comprises a processor and a memory storing computer program instructions. The processor implements the centralized energy storage PCS power supply control method as claimed in claim 12 when executing the computer program instructions.

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