Protection configuration method, protection configuration system and high-voltage direct-hanging energy storage system

Abstract

The invention relates to a protection configuration method, a protection configuration system and a high-voltage direct-hanging energy storage system. Corresponding protection modes are set for different electrical characteristic quantities; the electrical characteristic quantity of the high-voltage direct-hanging energy storage system is collected; judging an executed protection mode according to the electrical characteristic quantity; executing a corresponding protection action according to the protection mode; according to the invention, the protection of the same electrical characteristic quantity in the high-voltage direct-hanging energy storage system is segmented, and the processing mode of a certain segment of protection action result can be flexibly configured; when the safety of the energy storage device is endangered by a fault, after the energy storage device breaks down or the system is disturbed, on one hand, alarming and locking pulse processing are carried out at the initial stage of the fault to limit fault development or avoid a transient fault of a power grid, so that the energy storage device is prevented from being disconnected from the power grid at will, and support is provided for the power grid as much as possible; and when the energy storage device is endangered by a fault, pulse locking or tripping treatment can be quickly carried out, so that the energy storage device is protected from being damaged.

Description

Technical Field

[0001] The present invention belongs to the technical field of high-voltage direct-mounted energy storage protection, and in particular relates to a protection configuration method, a protection configuration system and a high-voltage direct-mounted energy storage system. Background Art

[0002] High-voltage direct-mounted energy storage technology has been widely used in the field of new energy. The advantage of high-voltage direct-mounted energy storage technology is that it can be directly mounted on the high-voltage power grid without the need for conversion by equipment such as transformers. Therefore, it can reduce energy losses and improve the efficiency of the power system. High-voltage direct-mounted energy storage technology can also provide rapid power response, thereby helping the power system to better cope with emergencies and improve the stability of the power system.

[0003] According to the technical characteristics of high-voltage direct-mounted energy storage, which uses a large number of high-voltage IGBT devices, and its functional requirements for providing support to the power grid when the power grid fails or fluctuates. The protection function of high-voltage direct-mounted energy storage needs to take into account the following two aspects: 1. When the battery overvoltage, IGBT overcurrent, and overvoltage thresholds are reached, the protection should block the pulse or trip the grid-connected switch as soon as possible. The protection action time is generally required to be in the microsecond level to achieve the purpose of protecting the IGBT. 2. When a power grid fails, the requirements of low voltage ride-through and high voltage ride-through should be met to provide support to the power grid as much as possible. At present, most of the research on high-voltage direct-mounted energy storage protection is based on the perspective of the protection device itself. For example, some literature has studied the removal mechanism of batteries, bridge arms, and capacitors. These protections determine whether the corresponding protection object has a fault by setting certain trigger conditions, and the protection object will be removed when the conditions are met. In the above protection, there is little research on the classification of energy storage device faults and the coordination between energy storage device protection and power grid characteristics.

[0004] Therefore, based on the above technical problems, it is necessary to design a new protection configuration method, protection configuration system and high-voltage direct-mounted energy storage system. Summary of the invention

[0005] The purpose of the present invention is to provide a protection configuration method, a protection configuration system and a high-voltage direct-mounted energy storage system.

[0006] In order to solve the above technical problems, the present invention provides a protection configuration method, comprising: Set corresponding protection modes for different electrical characteristic quantities; Collect electrical characteristics of high-voltage direct-mounted energy storage systems; Determine the protection mode to be executed based on the electrical characteristic quantity; Execute corresponding protection actions according to the protection mode.

[0007] Further, when it is necessary to set at least two protection modes for the electrical characteristic quantity, each abnormal situation corresponding to each electrical characteristic quantity is set with corresponding at least two protection modes, and the protection mode levels are set in sequence, and the higher the protection mode level, the more serious the abnormal situation.

[0008] Furthermore, the higher the protection mode level, the faster the corresponding protection delay is set.

[0009] Furthermore, each protection mode is provided with a corresponding protection configuration, wherein the protection configuration includes: shielding, alarming, locking and tripping; The protection configurations are ranked in order of severity: muting, warning, blocking, and tripping.

[0010] Furthermore, each protection mode is provided with a corresponding protection logic, and the higher the protection mode level, the faster the protection logic processing speed.

[0011] Furthermore, for at least two protection modes for the same abnormal situation of the same electrical characteristic quantity, if the protection mode corresponds to a protection mode in which the electrical characteristic quantity exceeds the range, the protection constant corresponding to the protection mode is set from low to high; if the protection mode corresponds to a protection mode in which the electrical characteristic quantity is lower than the range, the protection constant corresponding to the protection mode is set from high to low.

[0012] Further, the method for determining the protection mode to be executed according to the electrical characteristic quantity includes: Determine whether the equipment is abnormal based on the value of the electrical characteristic quantity. If it is abnormal, determine the protection mode level it is in, and determine the protection logic processing position based on the protection mode level.

[0013] Furthermore, the protection mode is handled in the DSP when the processing speed requirement is low; When the processing speed is higher, the protection mode is processed in the FPGA or hardware comparison circuit.

[0014] In a second aspect, the present invention further provides a protection configuration system, comprising: A setting module is configured to set corresponding protection modes for different electrical characteristic quantities; A collection module is configured to collect electrical characteristic quantities of the high-voltage direct-mounted energy storage system; A judgment module is configured to judge the protection mode to be executed according to the electrical characteristic quantity; The execution module is configured to execute corresponding protection actions according to the protection mode.

[0015] In a third aspect, the present invention further provides a high-voltage direct-mounted energy storage system, comprising: An energy storage control and protection device, wherein a memory, a processor and a computer program stored in the memory are provided; The processor executes the computer program to implement the steps of the above protection configuration method.

[0016] The beneficial effects of the present invention are as follows: the present invention sets corresponding protection modes for different electrical characteristic quantities; collects electrical characteristic quantities of a high-voltage direct-mounted energy storage system; determines the protection mode to be executed according to the electrical characteristic quantities; and executes corresponding protection actions according to the protection mode; and realizes segmented processing of protection for the same electrical characteristic quantity in a high-voltage direct-mounted energy storage system, and can flexibly configure the processing method for a certain section of the protection action result; and when a fault endangers the safety of the energy storage device, it can be achieved that after a fault occurs in the energy storage device or a disturbance occurs in the system, on the one hand, an alarm and a lockout pulse processing are first performed at the initial stage of the fault to limit the development of the fault, or to avoid transient faults in the power grid, to ensure that the energy storage device will not be disconnected from the grid at will, and to provide support for the power grid as much as possible; and when the fault endangers the energy storage device, a lockout pulse or tripping processing can be quickly performed to protect the energy storage device from damage.

[0017] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0018] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 is a flow chart of a protection configuration method of the present invention; Figure 2 It is a partial principle block diagram of the high-voltage direct-mounted energy storage system of the present invention. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] like Figure 1 and Figure 2 As shown, at least one embodiment provides a protection configuration method, including: setting corresponding protection modes for different electrical characteristic quantities; collecting electrical characteristic quantities of a high-voltage direct-hung energy storage system; judging the protection mode to be executed according to the electrical characteristic quantities; executing corresponding protection actions according to the protection mode; realizing segmented processing of protection for the same electrical characteristic quantity in a high-voltage direct-hung energy storage system, and being able to flexibly configure the processing method for the result of a certain protection action; and when a fault endangers the safety of an energy storage device (i.e., a high-voltage direct-hung energy storage device), it can be realized that after a fault occurs in the energy storage device or a disturbance occurs in the system (high-voltage direct-hung energy storage system), on the one hand, an alarm and a locking pulse processing are first performed at the initial stage of the fault to limit the development of the fault, or to avoid transient faults in the power grid, to ensure that the energy storage device will not be disconnected from the grid at will, and to provide support for the power grid as much as possible; and when the fault endangers the energy storage device, a locking pulse or tripping processing can be quickly performed to protect the energy storage device from damage; a memory, a processor, and a computer program stored in the memory are provided in the energy storage control protection device, and the processor executes the computer program to implement the steps of the protection configuration method.

[0023] The normal range of the electrical characteristic quantity and the corresponding value range under each protection mode can be set. When the value of the electrical characteristic quantity has exceeded the normal range but is not serious enough to require shutdown and disconnection from the grid, other processing methods can be used to avoid increasing losses.

[0024] When it is necessary to set at least two protection modes for the electrical characteristic quantity, each abnormal situation corresponding to each electrical characteristic quantity is set with corresponding at least two protection modes, and the protection mode stages are set in sequence. The higher the protection mode stage, the more serious the abnormal situation; the analog quantities such as the grid voltage, grid frequency, energy storage device output current, and energy storage device DC voltage are protected in sections. Protection modes such as grid voltage overvoltage protection, grid voltage undervoltage protection, grid overfrequency protection, grid underfrequency protection, energy storage device output overcurrent protection, bridge arm total DC voltage protection, and module DC voltage protection can be set. Each analog quantity can be set with one or more sections of protection according to actual needs. Each protection mode can be set to different protection settings and protection delays. The protection settings and protection delays of different protection modes cooperate with each other to form a complete protection for the energy storage device (energy storage device in the high-voltage direct-mounted energy storage system) and provide support for the grid at the same time. For example, the grid overvoltage is configured with a four-stage protection mode, in which the protection setting value increases successively from the first stage to the fourth stage, and the protection delay shortens successively; the various protection logics in the high-voltage direct-mounted energy storage system can be segmented and the protection action results can be flexibly configured according to the actual technical parameters of the energy storage device and the actual on-site operating conditions, so that the high-voltage direct-mounted energy storage system can be protected stably and accurately, avoiding excessive protection operations when there are only minor problems, resulting in a large amount of resource consumption and waste.

[0025] Modifying the protection setting, protection delay, and protection processing method is simple and quick. It can be achieved by modifying the corresponding protection setting through the human-machine interface without modifying the software program.

[0026] According to the actual technical parameters of the energy storage device and the actual operating conditions on site, the various protection logics in the high-voltage direct-mounted energy storage system can be segmented and the protection action results can be flexibly configured. After the energy storage control protection device makes a protection judgment according to the specific working conditions, it will issue an alarm and lockout when the fault characteristic quantity (that is, the electrical characteristic quantity exceeds the normal range) exceeds the normal working condition but does not reach the threshold of energy storage device damage, so as to limit the expansion of the fault or avoid transient faults in the power grid, rather than immediately tripping off the grid.

[0027] The energy storage control and protection device collects the analog quantities of system voltage and system current through PT and CT, collects the output current of the energy storage device through the Hall sensor, collects the operating status information of the commutation chain and analog quantity information such as DC voltage through optical fiber communication, and sends PWM trigger pulses and other control commands; a transformer or a connecting reactance is connected between the commutation chain and the grid-connected switch.

[0028] The protection logic protects analog quantities such as grid voltage, grid frequency, output current of energy storage device, and battery voltage in IGBT chain link in sections. It is configured with four-section protection mode for grid voltage overvoltage, three-section protection mode for grid voltage undervoltage, three-section protection mode for grid overfrequency, three-section protection mode for grid underfrequency, three-section protection mode for device output overcurrent, two-section protection mode for DC overvoltage of commutation chain link, and DC undervoltage protection mode of commutation chain link.

[0029] Based on the segmented processing of protection judgment according to the protection characteristic electrical quantity and the flexible configuration of the protection action result processing method according to the protection severity, the protection action result under specific working conditions can be flexibly configured according to the technical characteristics and grid-connected working requirements of the high-voltage direct-mounted energy storage device. On the one hand, it can effectively protect the energy storage device itself, and on the other hand, it can ensure that the energy storage device will not be disconnected from the grid at will when the power grid fails, and provide support for the power grid as much as possible. In this way, the current situation of frequent disconnection of high-voltage direct-mounted energy storage devices can be improved under the premise of ensuring the safety of the energy storage device.

[0030] The higher the protection mode level, the faster the corresponding protection delay is set; each protection mode can be set to different protection settings and protection delays. The protection settings and protection delays of different protection modes cooperate with each other to form a complete protection for the energy storage device and provide support for the power grid. Among them, the configured four-stage overvoltage protection mode of the power grid, the overvoltage protection action settings of the first to fourth protection modes can be configured as 1.1pu, 1.2pu, 1.3pu, 1.35pu respectively, and the protection delay can be set to 30s, 3s, 1s, 0.5s respectively. According to the protection setting, the higher the voltage, the faster the protection action, and other protection settings and protection delays can also be configured according to this rule.

[0031] Each protection mode is set with a corresponding protection configuration, including: shielding, alarm, lockout and tripping; the severity of the protection configuration is ranked as shielding, alarm, lockout and tripping, and different degrees of protection configuration can be configured according to actual needs. Different protection configurations correspond to different execution actions, so that when an abnormality or danger occurs, only the corresponding degree of action can be executed, and there is no need to cut off the energy storage device directly to reduce losses; according to actual needs, each protection can be configured with different processing methods, including shielding, alarm, lockout and tripping. The impact of each processing method is different, among which shielding means that the protection action will not affect the operation of the energy storage device, and alarm means that the alarm information will be reported; lockout means that the energy storage control protection device is temporarily blocked Figure 2 The PWM pulse in the circuit breaker is sent; tripping means that the circuit breaker will trip. Figure 2The grid-connected switch in the grid disconnects the energy storage device from the grid. Therefore, it is necessary to configure each protection differently, and perform alarm and lockout processing when the fault characteristic quantity has exceeded the normal operating condition but reached the threshold of energy storage device damage, so as to limit the expansion of the fault or avoid transient faults in the power grid, rather than immediately tripping and disconnecting from the grid. When the fault characteristic quantity has reached the threshold of energy storage device damage, a rapid tripping process is performed to protect the energy storage device from damage. According to actual needs, each protection mode can be configured as a different processing method, that is, different protection configurations correspond to different execution actions, including shielding, alarm, lockout, and tripping. For example, the first stage of the power grid overvoltage protection mode can be set to alarm, the second and third stages of the power grid overvoltage protection mode can be set to lockout, and the fourth stage of the power grid overvoltage protection mode can be set to trip.

[0032] Among them, when the protection processing mode (protection configuration, that is, the subsequent execution action) is set to shield, it means that the energy storage control protection device judges the protection, and when the protection is activated, only the action information is recorded, and no other operations are performed.

[0033] When the protection processing mode is set to alarm, it means that the energy storage control protection device will judge the protection. When the protection is activated, the protection action information will be recorded and an alarm signal will be reported. When the protection condition is restored, the alarm signal will automatically reset.

[0034] When the protection setting mode is set to lockout, it means that the energy storage control protection device will judge the protection. When the protection is activated, the protection action information will be recorded and the PWM trigger pulse signal sent to the energy storage commutation chain will be blocked. After the blockade lasts for a certain period of time, the energy storage control protection device will automatically restore the trigger pulse. If the protection is activated again after the pulse is restored, the energy storage control protection device will enter the lockout state again. If the number of lockouts reaches the set value within the set time, the energy storage control protection device will send a trip signal.

[0035] When the protection processing mode is set to tripping, it means that the energy storage control protection device makes a judgment on the protection. When the protection is activated, the protection action information will be recorded and a grid-connected switch tripping command will be issued, so that the energy storage device is disconnected from the grid and shut down. After the energy storage control protection device makes a protection judgment according to the specific working conditions, when the fault characteristic quantity has exceeded the normal working condition but has not reached the threshold of energy storage device damage, an alarm and a lockout process will be performed to limit the expansion of the fault or avoid transient grid faults, rather than immediately tripping and disconnecting from the grid to avoid a large amount of resource waste. Each protection mode is set with a corresponding protection logic. The higher the protection mode level, the faster the protection logic processing speed. Different protection logic can be used to implement each protection according to different protection requirements. The energy storage control protection system is equipped with processors such as DSP, FPGA and hardware comparison circuits and other protection processing links. Generally, second-level and millisecond-level protection is processed in DSP, while microsecond-level protection needs to be processed in FPGA or hardware comparison circuit. For example, the overvoltage, undervoltage protection of the power grid voltage is second-level and millisecond-level protection, which can be judged by the effective value of the power grid voltage in DSP. The logic processing of the direct protection of the commutation chain IGBT device requires completion at the microsecond level and needs to be implemented in FPGA. For example, the first and second overcurrent protection can be implemented in DSP, and the third fast overcurrent protection needs to be implemented in FPGA. Different protection logic can be used to implement each protection mode according to different protection requirements. For example, the first-stage overcurrent protection mode of the energy storage device is second-level protection, which is judged by the effective value in DSP, the second-stage overcurrent protection mode of the energy storage device is millisecond-level protection, which is judged by the instantaneous sampling value in DSP, and the third-stage overcurrent protection mode is microsecond-level protection, which is judged in FPGA or hardware circuit.

[0036] For at least two protection modes for the same abnormal situation of the same electrical characteristic quantity, if the protection mode corresponds to the protection mode in which the electrical characteristic quantity exceeds the range, the protection constant corresponding to the protection mode is set from low to high; if the protection mode corresponds to the protection mode in which the electrical characteristic quantity is lower than the range, the protection constant corresponding to the protection mode is set from high to low.

[0037] The electrical characteristic quantities of the high-voltage direct-mounted energy storage system are collected. The energy storage control protection device first samples the state quantity and switch quantity, and then calculates the electrical quantities such as voltage, current, and power after collecting analog quantities such as voltage and current. Then, the collected and calculated results are used to perform protection logic processing, and corresponding protection modes are set for different electrical characteristic quantities.

[0038] The method for determining the protection mode to be executed according to the electrical characteristic quantity comprises: Determine whether the energy storage device is abnormal based on the value of the electrical characteristic quantity. If it is abnormal, determine the protection mode level, and determine the protection logic processing position based on the protection mode level. For example, compare the actual value collected with the preset value range to determine the protection mode level corresponding to the current electrical characteristic value, so as to execute the corresponding protection logic.

[0039] When the processing speed requirement is low, the protection mode is processed in the DSP; when the processing speed requirement is high, the protection mode is processed in the FPGA or hardware comparison circuit.

[0040] Specifically, the first stage of the grid overvoltage is configured as an alarm, the second and third stages are configured as blocking, and the fourth stage of overvoltage is configured as tripping; the first, second and third stages of the grid undervoltage protection are configured as blocking; the three stages of the grid overfrequency and underfrequency protection are configured as blocking; the first and second stages of the device overcurrent are configured as blocking, and the third stage of the device overcurrent is configured as tripping; the first stage of the module DC voltage overvoltage is configured as blocking, and the second stage is configured as tripping. The configuration of the above protection processing methods can be flexibly changed by modifying the protection configuration word according to the technical parameters of the energy storage device and the actual operation requirements on site.

[0041] Through the above protection configuration method and system for high-voltage direct-mounted energy storage, it can be achieved that after a failure of the energy storage device or a disturbance of the power grid, on the one hand, an alarm and a lockout process are first performed at the early stage of the failure to limit the development of the failure, or to avoid transient failures of the power grid, to ensure that the energy storage device will not be disconnected from the grid at will, and to provide support for the power grid as much as possible; and when the failure endangers the energy storage device, it can quickly perform a lockout or tripping process to protect the energy storage device from damage.

[0042] In at least one other embodiment, a protection configuration system is also provided, including: a setting module, configured to set corresponding protection modes for different electrical characteristic quantities; a collection module, configured to collect electrical characteristic quantities of a high-voltage direct-mounted energy storage system; a judgment module, configured to judge the protection mode to be executed according to the electrical characteristic quantities; and an execution module, configured to execute corresponding protection actions according to the protection mode.

[0043] like Figure 2 As shown, in at least one other embodiment, a high-voltage direct-mounted energy storage system is also provided, including: an energy storage control and protection device, which is provided with a memory, a processor, and a computer program stored in the memory; the processor executes the computer program to implement the steps of the above-mentioned protection configuration method. It is ensured that when the energy storage control and protection device itself fails and the high-voltage direct-mounted energy storage system is disturbed, the energy storage device body in the high-voltage direct-mounted energy storage system can be reliably protected, while taking into account the grid-connected operation requirements, ensuring that the energy storage device provides support to the grid as much as possible when the grid is disturbed, and will not be disconnected from the grid at will; a commutation chain and a grid-connected switch are also connected between the energy storage control and protection device and the system bus.

[0044] In summary, the present invention sets corresponding protection modes for different electrical characteristic quantities; collects electrical characteristic quantities of a high-voltage direct-mounted energy storage system; determines the protection mode to be executed according to the electrical characteristic quantities; and executes corresponding protection actions according to the protection mode; it realizes segmented processing of protection for the same electrical characteristic quantity in a high-voltage direct-mounted energy storage system, and can flexibly configure the processing method for a certain section of the protection action result; and when a fault endangers the safety of the energy storage device, it can be achieved that after a fault occurs in the energy storage device or a disturbance occurs in the system, on the one hand, an alarm and a lockout pulse processing are first performed at the initial stage of the fault to limit the development of the fault, or to avoid transient faults in the power grid, to ensure that the energy storage device will not be disconnected from the grid at will, and to provide support for the power grid as much as possible; and when the fault endangers the energy storage device, a lockout pulse or tripping processing can be quickly performed to protect the energy storage device from damage.

[0045] The various devices selected in this application (components whose specific structures are not described) are all universal standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0046] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0047] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0048] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0049] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A protection configuration method, characterized in that: include: Set corresponding protection modes for different electrical characteristic quantities; Collect electrical characteristics of high-voltage direct-mounted energy storage systems; Determine the protection mode to be executed based on the electrical characteristic quantity; Execute corresponding protection actions according to the protection mode.

2. The protection configuration method according to claim 1, characterized in that: When it is necessary to set at least two protection modes for the electrical characteristic quantity, each abnormal situation corresponding to each electrical characteristic quantity is set with corresponding at least two protection modes, and the protection mode levels are set in sequence. The higher the protection mode level, the more serious the abnormal situation.

3. The protection configuration method according to claim 2, characterized in that: The higher the protection mode level, the faster the corresponding protection delay will be.

4. The protection configuration method according to claim 2, characterized in that: Each protection mode is set with corresponding protection configuration, which includes: shielding, alarm, locking and tripping; The protection configurations are ranked in order of severity: muting, warning, blocking, and tripping.

5. The protection configuration method according to claim 2, characterized in that: Each protection mode is set with corresponding protection logic. The higher the protection mode level, the faster the protection logic processing speed.

6. The protection configuration method according to claim 1, characterized in that: For at least two protection modes for the same abnormal situation of the same electrical characteristic quantity, if the protection mode corresponds to the protection mode in which the electrical characteristic quantity exceeds the range, the protection constant corresponding to the protection mode is set from low to high; if the protection mode corresponds to the protection mode in which the electrical characteristic quantity is lower than the range, the protection constant corresponding to the protection mode is set from high to low.

7. The protection configuration method according to claim 1, characterized in that: The method for determining the protection mode to be executed according to the electrical characteristic quantity comprises: Whether the energy storage device is abnormal is determined based on the value of the electrical characteristic quantity. If abnormal, it is determined to be in a protection mode segment, and the protection logic processing position is determined based on the protection mode segment.

8. The protection configuration method according to claim 7, characterized in that: When the processing speed requirement is low, the protection mode is handled in the DSP; When the processing speed is higher, the protection mode is processed in the FPGA or hardware comparison circuit.

9. A protection configuration system, characterized in that: include: A setting module is configured to set corresponding protection modes for different electrical characteristic quantities; A collection module is configured to collect electrical characteristic quantities of the high-voltage direct-mounted energy storage system; A judgment module is configured to judge the protection mode to be executed according to the electrical characteristic quantity; The execution module is configured to execute corresponding protection actions according to the protection mode.

10. A high-voltage direct-mounted energy storage system, characterized in that: include: An energy storage control and protection device, wherein a memory, a processor and a computer program stored in the memory are provided; The processor executes the computer program to implement the steps of the protection configuration method according to any one of claims 1 to 8.

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