A method, device, system and storage medium for selectively controlling the operation of a burst quick current limiter

Abstract

The application discloses a kind of explosive quick current limiter selective action control method, device, system and storage medium, belong to short-circuit current limiting technical field.Method includes obtaining the setting value of the current of explosive quick current limiter;When there is current through explosive quick current limiter, obtain the current data flowing through explosive quick current limiter, and judge whether current data is greater than setting value;After judging that explosive quick current limiter needs to prepare blasting, judge whether the port of explosive quick current limiter fails, and send prohibition signal to its adjacent explosive quick current limiter when port fails;If explosive quick current limiter needs to prepare blasting, and do not receive prohibition signal, output blasting instruction to control explosive quick current limiter to occur blasting.The application realizes the control of the selection of explosive quick current limiter blasting action, to limit short-circuit current, improve control accuracy.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of short-circuit current limiting, and particularly relates to a selective action control method, device and system of a burst-type fast current limiter and a storage medium. BACKGROUND

[0002] Short-circuit current has two mechanisms of destructiveness to power equipment, one is the instantaneous peak value of current, corresponding to the electrodynamic effect of current, referred to as the dynamic stability of electrical equipment, and the other is the effective value of current, corresponding to the thermal effect of current, referred to as the thermal stability of electrical equipment. The main feature of a burst-type fast current limiter (FCL) is to limit the short-circuit current in the initial stage of the first half-wave rise when the expected short-circuit current is abnormally high, so that it cannot reach the peak value of the first half-wave. It is mainly composed of a very low-resistance burst tube and a fast fuse in parallel, and the resistance of the former is much smaller than that of the latter. After the burst tube is ignited and burst, the current is forced to shift to the fast fuse branch, and this process is less than 1 millisecond. The short-circuit current is limited by the larger impedance of the fast fuse, and when the current passes through the point, the fast fuse will open the short-circuit current.

[0003] Compared with other fault current limiters that can only solve the problem of thermal stability, the advantage of the burst-type fast current limiter is that it can solve both the problem of thermal stability and the problem of dynamic stability. However, its disadvantage is that once it acts once, the burst-type fast current limiter itself is no longer available, so compared with other types of fault current limiters that can be repeatedly used, the burst-type fast current limiter needs a different action control strategy to improve its control accuracy and reduce the economic loss after the burst of the burst-type fast current limiter. SUMMARY

[0004] The present application aims to overcome the deficiencies in the prior art and provide a burst-type fast current limiter selective action control method, device, system and storage medium, which realizes the control of the burst action of the burst-type fast current limiter to limit the short-circuit current and improve the control accuracy.

[0005] The present application provides the following technical solutions:

[0006] In a first aspect, a selective action control method of a burst fast current limiter is provided. A setting value of a current of the burst fast current limiter is obtained. When a current flows through the burst fast current limiter, current data flowing through the burst fast current limiter is obtained, and it is determined whether the current data is greater than the setting value. If the current data is greater than the setting value, it is determined that the burst fast current limiter needs to be prepared for burst. Otherwise, it is determined that the burst fast current limiter does not need to be prepared for burst. After it is determined that the burst fast current limiter needs to be prepared for burst, port current data of the burst fast current limiter is obtained, it is determined whether a port of the burst fast current limiter fails according to the port current data and the current data of the burst fast current limiter, and a prohibition signal is sent to an adjacent burst fast current limiter when the port fails. If the burst fast current limiter needs to be prepared for burst and no prohibition signal is received, a burst instruction is output to control the burst fast current limiter to burst.

[0007] As an optional technical solution of the present application, after the setting value of the current of the burst fast current limiter is obtained, a positive direction of the current flowing through the burst fast current limiter is also obtained. The positive direction of the current of the burst fast current limiter is from the input end to the output end.

[0008] As an optional technical solution of the present application, the port of the burst fast current limiter includes an input end and an output end. The port current data of the burst fast current limiter includes input end current data and output end current data. The input end current data and the output end current data each include a current value and a current direction.

[0009] As an optional technical solution of the present application, it is determined whether the port of the burst fast current limiter fails according to the port current data and the current data of the burst fast current limiter, including:

[0010] If the input end of the burst fast current limiter fails, a prohibition signal is sent to the burst fast current limiter adjacent to the output end thereof. If the output end of the burst fast current limiter fails, a prohibition signal is sent to the burst fast current limiter adjacent to the input end thereof.

[0011] As an optional technical solution of the present application, it is determined whether the port of the burst fast current limiter fails, including:

[0012] Correlation calculation is performed on the current of the burst fast current limiter and the port current, which is represented as:

[0013] ;

[0014] wherein, the correlation coefficient is represented as, the total number of sampling points is represented as, the sampling point of the i-th current is represented as, a sample point representing the i-th port current, a standard deviation of the current, a standard deviation of the port current, a mean value of the current, a mean value of the port current;

[0015] If the correlation coefficient r of the consecutive set values is greater than 0.75, it is judged that the output end has a fault; if the correlation coefficient r of the consecutive set values is less than -0.75, it is judged that the input end has a fault.

[0016] As an optional technical solution of the present application, the method further comprises: subtracting the phase of the current of the bursting fast current limiter from the phase of the port current; if the phase difference is less than or equal to 15°, it is judged that the output end has a fault; if the phase difference is within 165°-195°, it is judged that the input end has a fault.

[0017] As an optional technical solution of the present application, the method further comprises: if the bursting fast current limiter receives a prohibition signal, the bursting command is not sent to the bursting fast current limiter.

[0018] In a second aspect, a selective action control device of a bursting fast current limiter is provided, comprising: a data acquisition module, configured to acquire a setting value of the current of the bursting fast current limiter;

[0019] a bursting judgment module, configured to acquire current data flowing through the bursting fast current limiter when the current flows through the bursting fast current limiter, and judge whether the current data is greater than the setting value; if the current data is greater than the setting value, it is judged that the bursting fast current limiter needs to prepare for bursting; otherwise, it is judged that the bursting fast current limiter does not need to prepare for bursting;

[0020] a fault judgment module, configured to acquire port current data of the bursting fast current limiter after judging that the bursting fast current limiter needs to prepare for bursting, judge whether the port of the bursting fast current limiter has a fault according to the port current data and the current data of the bursting fast current limiter, and send a prohibition signal to the adjacent bursting fast current limiter when the port has a fault;

[0021] an instruction sending module, configured to output a bursting command to control the bursting fast current limiter to burst if the bursting fast current limiter needs to prepare for bursting and has not received the prohibition signal.

[0022] In a third aspect, a selective action control system of a bursting fast current limiter is provided, comprising a plurality of bursting fast current limiters, each of which comprises:

[0023] A current acquisition unit is configured to acquire current data and port current data of the burst fast current limiter.

[0024] A communication unit is configured to receive or send a prohibition signal to an adjacent burst fast current limiter.

[0025] A processing unit is configured to execute the burst fast current limiter selective action control method of the first aspect.

[0026] A burst execution unit is configured to execute the burst current limiting according to the burst instruction output by the processing unit.

[0027] In the fourth aspect, a computer readable storage medium is provided, and the computer readable storage medium stores a computer program, which is executed by a processor to implement the steps of the burst fast current limiter selective action control method of the first aspect.

[0028] Compared with the prior art, the present application has the following advantages:

[0029] The burst fast current limiter selective action control method provided by the present application can determine whether the burst fast current limiter needs to be prepared for burst and whether the port of the burst fast current limiter has a fault by using the current and the port current of the burst fast current limiter, send a prohibition signal to an adjacent burst fast current limiter of the current burst fast current limiter, and control the burst action of the burst fast current limiter to limit the short-circuit current, improve the control accuracy, and reduce the economic loss caused by the false burst. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a flowchart of the burst fast current limiter selective action control method in the embodiment of the present application;

[0031] Figure 2 is a schematic diagram of two main transformers in parallel in the embodiment of the present application;

[0032] Figure 3 is a schematic diagram of a new power supply in parallel with an old system in the embodiment of the present application;

[0033] Figure 4 is a schematic diagram of three main transformers in parallel in the embodiment of the present application;

[0034] Figure 5 is a schematic diagram of multiple systems connected to a grid through the burst fast current limiter in the embodiment of the present application. DETAILED DESCRIPTION

[0035] The present application will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and cannot be used to limit the protection scope of the present application.

[0036] Embodiment 1

[0037] The embodiment provides a selective action control method of a burst quick current limiter, and relates to the technical field of current limiter control. Figure 1 As shown in the figure, the method comprises the following steps.

[0038] Step 1: defining a setting value of current flowing through the burst quick current limiter.

[0039] In this step, the positive direction of current flowing through the burst quick current limiter is obtained.

[0040] When the current flows through the burst quick current limiter, the burst quick current limiter presents very low resistance, and the resistance of the burst pipe is only several micro-ohms under normal current, which is equivalent to a section of metal wire.

[0041] Step 2: when the current flows through the burst quick current limiter, current data flowing through the burst quick current limiter is obtained, and it is judged whether the current data is greater than the setting value; if the current data is greater than the setting value, it is judged that the burst quick current limiter needs to be prepared for blasting; otherwise, it is judged that the burst quick current limiter does not need to be prepared for blasting.

[0042] In the embodiment, the current greater than the setting value flowing through the burst quick current limiter is defined as short-circuit current.

[0043] Step 3: after it is judged that the burst quick current limiter needs to be prepared for blasting, port current data of the burst quick current limiter is obtained, it is judged whether the port of the burst quick current limiter fails according to the port current data and the current data of the burst quick current limiter, and a prohibition signal is sent to the adjacent burst quick current limiter when the port fails.

[0044] Specifically, the port of the burst quick current limiter comprises an input end and an output end, and the positive direction of the current of the burst quick current limiter flows from the input end to the output end. The port current data of the burst quick current limiter comprises input end current data and output end current data; the input end current data and the output end current data both comprise current value and current direction. If the input end of the burst quick current limiter fails, a prohibition signal is sent to the burst quick current limiter adjacent to the output end thereof; if the output end of the burst quick current limiter fails, a prohibition signal is sent to the burst quick current limiter adjacent to the input end thereof.

[0045] The embodiment provides two methods for judging whether the failure occurs in the input end or the output end.

[0046] Method 1:

[0047] The correlation of the current of the burst quick current limiter and the port current is calculated, which is expressed as:

[0048] ;

[0049] wherein, represents a correlation coefficient, represents a total number of sampling points, represents a sampling point of the i-th current, represents a sampling point of the i-th port current, represents a standard deviation of the current, represents a standard deviation of the port current, represents a mean value of the current, represents a mean value of the port current.

[0050] In the embodiment, 12 sampling points (sampling frequency is 20 kHz) are selected under each time sliding window to calculate the correlation coefficient, and the continuous correlation calculation is performed at a sliding speed of one sampling point, and the new correlation coefficient is continuously calculated. If the correlation coefficient r is greater than 0.75, it is considered that the current of the bursting type fast current limiter and the port current are in-phase relationship, and the fault occurs at the output end; if the correlation coefficient r is less than -0.75, it is considered that the current of the bursting type fast current limiter and the port current are in anti-phase relationship, and the fault occurs at the input end.

[0051] Since only one correlation coefficient r is used as a criterion, the reliability and stability are insufficient, and the embodiment sets 15 continuous correlation coefficients as the judgment basis. If the 15 continuous correlation coefficients r are greater than 0.75, it is judged that the output end has a fault; if the 15 continuous correlation coefficients r are less than -0.75, it is judged that the input end has a fault.

[0052] Method two:

[0053] The phase difference of the current of the bursting type fast current limiter and the port current is calculated, if the phase difference is less than or equal to 15°, it is judged that the output end has a fault; if the phase difference is within 165°-195°, it is judged that the input end has a fault.

[0054] Step four: if the bursting type fast current limiter needs to prepare to burst, and no inhibition signal is received, a burst command is output to control the bursting of the bursting type fast current limiter.

[0055] Specifically, if the bursting type fast current limiter receives an inhibition signal, no burst command is sent to the bursting type fast current limiter. If the bursting type fast current limiter does not receive an inhibition signal, and the bursting type fast current limiter needs to prepare to burst, a burst control command is sent to the burst pipe of the bursting type fast current limiter, and the burst pipe will burst in microseconds (a few microseconds to tens of microseconds), and the short-circuit current is transferred to the fast fuse connected in parallel with the burst pipe. The fast fuse presents a large impedance, thereby limiting the short-circuit current, and the final short-circuit current is opened by the fast fuse at the current zero point.

[0056] Embodiment 2

[0057] The embodiment provides a selective action control device of a bursting fast current limiter, each adjacent bursting fast current limiter is configured with a control system. The control system comprises:

[0058] a data acquisition module configured to acquire a setting value of a current of the bursting fast current limiter;

[0059] a bursting judgment module configured to acquire current data flowing through the bursting fast current limiter when the current flows through the bursting fast current limiter, and judge whether the current data is greater than the setting value; if the current data is greater than the setting value, it is judged that the bursting fast current limiter needs to prepare for bursting; otherwise, it is judged that the bursting fast current limiter does not need to prepare for bursting;

[0060] a fault judgment module configured to acquire port current data of the bursting fast current limiter after judging that the bursting fast current limiter needs to prepare for bursting, judge whether a port of the bursting fast current limiter has a fault according to the port current data and the current data of the bursting fast current limiter, and send an inhibition signal to an adjacent bursting fast current limiter when the port has the fault;

[0061] an instruction sending module configured to output a bursting instruction to control the bursting fast current limiter to burst if the bursting fast current limiter needs to prepare for bursting and has not received the inhibition signal.

[0062] Embodiment 3

[0063] The embodiment provides a selective action control system of a bursting fast current limiter, comprising a plurality of bursting fast current limiters, each bursting fast current limiter comprising:

[0064] a current acquisition unit configured to acquire current data and port current data of the bursting fast current limiter;

[0065] a communication unit configured to receive an inhibition signal of an adjacent bursting fast current limiter or send an inhibition signal to an adjacent bursting fast current limiter;

[0066] a processing unit configured to execute the selective action control method of the bursting fast current limiter described in Embodiment 1;

[0067] a bursting execution unit configured to execute the bursting fast current limiter according to a bursting instruction output by the processing unit.

[0068] Embodiment 4

[0069] The embodiment provides a computer readable storage medium, and a computer program is stored on the computer readable storage medium, the program is executed by a processor to implement steps of the selective action control method of the bursting fast current limiter described in Embodiment 1.

[0070] Example 5

[0071] This embodiment provides a distributed control method for power distribution network partitioning using a burst-type fast current limiter in four different scenarios based on Example 1.

[0072] Scenario One:

[0073] As shown in Figure 2 , when two main transformers are connected through a burst-type fast current limiter FCL1, FCL1 should act as long as the set setting value is exceeded when a short circuit occurs at the load side A of main transformer 1 and the load side B of main transformer 2. The specific process is as follows:

[0074] In this scenario, the positive direction of the current can be either pointing to the transformer 1 side or the transformer 2 side. In this embodiment, the transformer 1 side is the input end and the transformer 2 side is the output end. The input end current data includes the current of transformer 1, and the output end current data includes the current of transformer 2. Since there is only one burst-type fast current limiter FCL1 in this application scenario, there is no adjacent burst-type fast current limiter, and no inhibition signal is received or sent.

[0075] When a short circuit fault occurs at point A, transformer 2 injects current to point A through FCL1 to obtain the current of FCL1. If it is determined that the current size has exceeded the setting value, a burst command is sent to burst the burst tube of FCL1, and the current limiting opening state is entered. When a short circuit fault occurs at point B, transformer 1 injects current to point B through FCL1, and the control condition is exactly the same as when a short circuit fault occurs at point A.

[0076] Scenario Two:

[0077] As shown in Figure 3 , the B area is a newly added power supply system (Phase II project), and the A area is an old power supply system (Phase I project). The total short circuit current of the Phase I project system is relatively small (e.g., 25 kA), and the breaking capacity of all feeder breakers can meet the requirements of the Phase I project (e.g., 31.5 kA), so the system is safe in terms of short circuit current breaking without considering the Phase II project. After many years, due to the need of production, the Phase II project is added, which may be but is not limited to new energy, and the total short circuit current of the Phase II project is assumed to be 10 kA. The breaking capacity of all feeder breakers in the Phase II project is selected to be 40 kA. In order to ensure voltage quality and power supply reliability, the Phase I and Phase II need to be networked, i.e., electrically connected through a bus coupler. Obviously, in this case, the breaking capacity of all breakers in the Phase I project is insufficient, so it is considered to install a burst-type fast current limiter FCL1 at the tie line or bus coupler position. When a short circuit fault occurs in the Phase I, FCL1 quickly breaks to separate the system. However, when a short circuit occurs in the Phase II, FCL obviously does not need to act. Therefore, there is a problem of selective action of the current limiter.

[0078] In this scenario, the positive direction of the current points towards the generator G side, i.e., from region A to region B. FCL1 does not operate when a forward short-circuit current flows, but operates when a reverse short-circuit current flows. The transformer 1 side is the input terminal, and the generator G side is the output terminal. The input current data includes the current from transformer 1. The output current data includes the current of generator G. Determine the current of FCL1. Whether the set value has been reached. Since there is only one blast-type fast current limiter in this application scenario, and no adjacent blast-type fast current limiters, it neither receives nor sends prohibition signals.

[0079] When a short-circuit fault occurs in the load of area A, generator G injects current into point A through FCL1 and obtains the current from FCL1. If you want to determine the current The magnitude has exceeded the set value; compare the current again. and , The polarity relationship. The criterion for judging two current signals as having almost the same polarity is that the correlation coefficient r of the two current signals is greater than 0.75, and the criterion for judging two current signals as having almost opposite polarities is that the correlation coefficient r of the two current signals is less than -0.75. When there is a fault in area A... , Almost the same polarity and , If the polarity is reversed, it is determined that a reverse short-circuit current has flowed through FCL1. A detonation command is sent, igniting the detonating tube of FCL1, which then enters a current-limiting interruption state. If a short-circuit fault occurs at point B, transformer 1 injects current into point B through FCL1, obtaining the current from FCL1. Current If the current is greater than the set value, the current will be... and , Comparison, and , Since they are almost of the same polarity, it can be determined that a forward short-circuit current has flowed through FCL1, and no burst command is sent at this time.

[0080] Scene 3:

[0081] like Figure 4 As shown, in the case of three main transformers operating in parallel, a short circuit at point A (load side) requires only FCL1 to operate; a short circuit at point B (load side) requires both FCL1 and FCL2 to operate; and a short circuit at point C (load side) requires only FCL2 to operate. Here, the operation of FCL1 and FCL2 exhibits a degree of selectivity. In this power distribution system, the three main transformers are connected by two explosive-type fast current limiters, and each FCL is equipped with an independent control system.

[0082] In this scenario, the positive direction of the FCL1 current is the direction from transformer 1 to transformer 2, and the positive and negative direction short-circuit currents are both output to prepare the blasting command, and whether the blasting is implemented also needs to be combined with whether the prohibition signal is received, and the output of the preparation blasting command is converted into the blasting command when the prohibition signal is not received. In this scenario, the transformer 1 side is the input end, and the transformer 2 side is the output end, the input end current data contains the current of transformer 1 , and the output end current data contains the current of transformer 2 . It is judged whether the current of FCL1 reaches the setting value.

[0083] When the short-circuit fault occurs in the load of area A, the transformer 2 and the transformer 3 inject current into point A through FCL1 and FCL2, and the current of FCL1 is obtained, if it is judged that the current has exceeded the setting value, then the current is compared with , When the short-circuit fault occurs in point A, the polarity relationship is almost the same polarity , , and the opposite polarity , , it can be judged that the reverse short-circuit current flows through FCL1, the short-circuit fault occurs in the input end of FCL1, and the prohibition signal is sent to the FCL2 adjacent to the output end of FCL1. FCL1 does not receive the prohibition signal from FCL2, sends the blasting command to FCL1, and the blasting tube of FCL1 enters the current-limiting open state. If a short-circuit fault occurs in point B, the transformer 1 injects current into point B through FCL1, and the transformer 3 injects current into point B through FCL2, and the current of FCL1 is obtained, and the current is greater than the setting value, in this case, the current is compared with , , and the opposite polarity , , it can be judged that the forward short-circuit current flows through FCL1, the short-circuit occurs in the output end of FCL1, and the input end of FCL1 does not need to send the prohibition signal, but needs to wait for the prohibition signal sent by other current limiters, in this scenario, FCL1 will not receive the prohibition signal from other FCLs, and the blasting command is sent to FCL1. If a short-circuit fault occurs in point C, the transformer 1 and the transformer 2 inject current into point C through FCL1 and FCL2, and the current of FCL1 , judge FCL1 flow through the forward short-circuit current, short-circuit occurs in the output end of FCL1, while FCL2 will also detect the short-circuit current, and judge short-circuit occurs in the output end of FCL2, will give the input end connected to FCL1 send inhibit signal, FCL1 receive this inhibit signal, then will not send blasting instruction.

[0084] The control logic of FCL2 is similar to FCL1, both are in completely symmetrical position, here will not repeat.

[0085] Scenario four:

[0086] As Figure 5 shown, system 1 short-circuit fault only FCL1 action, system 2 short-circuit fault only FCL2 action, system 3 short-circuit fault only FCL3 action, the current limiter needs to meet the above action selectivity. The system has three blasting fast current limiter, three of the position structure is completely symmetrical, with FCL1 as an example to illustrate.

[0087] The positive direction of FCL1 current is from system 1, the detection of positive and negative direction of short-circuit current will output ready to blast instruction, whether to realize the blasting also need to combine whether to receive the inhibit signal, no inhibit signal received when the preparation of blasting instruction to blasting instruction. System 1 side for the input end, FCL2 and FCL3 are connected to the output end, the input end has no external input current, the output end current data contains system 2 and system 3 current 、 . Judge FCL1 current size whether to reach the setting value.

[0088] System 1 fault occurs, get FCL1 current , and the current greater than the setting value, judge 、 same polarity, and and 、 polarity opposite, short-circuit fault occurs in the input end of FCL1, give the blasting preparation signal, and send the inhibit signal to FCL2 and FCL3 connected with its output end, while FCL1 will not receive the inhibit signal sent by other FCL, blasting preparation signal to blasting instruction, send to FCL1 blasting tube. System 2 fault occurs, get FCL1 current , current greater than the setting value, 、 same polarity, and The opposite polarity, short-circuit fault occurs at the output of FCL1, giving the burst preparation signal, the input of FCL1 has no current limiter connected thereto, no inhibit signal is needed, and FCL1 will receive the inhibit signal sent by FCL2, the burst preparation signal cannot be converted into the burst command. When the system 3 fails, the situation is similar to that when the system 2 fails, except that FCL1 will receive the inhibit signal sent by FCL3. The extremely rare case is that a short-circuit fault occurs at the connection between the three burst-type fast current limiters, FCL1 can judge that the short-circuit fault occurs, and FCL1 will not receive the inhibit signal sent by the other two burst-type fast current limiters, the burst preparation signal will be converted into the burst command and sent to the burst tube of FCL1.

[0089] Those skilled in the art will appreciate that embodiments of the application can be provided as methods, systems, or computer program products. Accordingly, the application can be embodied in the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the application can be embodied in the form of a computer program product on one or more computer readable storage media (including, but not limited to, disk memory, CD-ROMs, optical storage media, etc.) having computer usable program code embodied therein.

[0090] The application is described with reference to the flowchart and / or block diagrams of the methods, apparatus (systems) and computer program products according to embodiments of the application. It should be understood that each flow and / or block in the flowchart and / or block diagram, as well as combinations of flows and / or blocks in the flowchart and / or block diagram, 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, an embedded processor, or other programmable data processing apparatus to produce a machine, so that the instructions, which are executed via the processor of the computer or other programmable data processing apparatus, generate a means for implementing the functions specified in the flowchart and / or block diagram block or blocks. Figure 1 one or more flows and / or blocks Figure 1 means for carrying out the function specified in the flowchart block or blocks.

[0091] These computer program instructions can also be stored in a computer readable storage medium that can direct the computer or other programmable data processing apparatus to work in a specific manner, so that the instructions stored in the computer readable storage medium produce a product including an instruction means, which implements the functions specified in the flowchart and / or block diagram block or blocks. Figure 1 one or more flows and / or blocks Figure 1 means for carrying out the function specified in the flowchart block or blocks.

[0092] These computer program instructions can also be loaded into a computer or other programmable data processing devices, so that a series of operational steps are performed on the computer or other programmable data processing devices to generate a computer implemented process, so that the instructions executed on the computer or other programmable data processing devices provide a process for implementing the functions specified in the flowchart Figure 1 one flow or a plurality of flows and / or the functions specified in the block Figure 1 one flow or a plurality of flows and / or the functions specified in the block

[0093] The above description is only the preferred embodiment of the present application, it should be pointed out that for those skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can also be made, these improvements and modifications should also be considered as the protection scope of the present application.

Claims

1. A method of selectively actuating a bursting fast current limiter, comprising: The method comprises the following steps: obtaining a setting value of the current of the bursting fast current limiter; when current flows through the bursting fast current limiter, obtaining current limiter current data flowing through the bursting fast current limiter, and determining whether the current limiter current data is greater than the setting value; if the current limiter current data is greater than the setting value, it is determined that the bursting fast current limiter needs to be prepared for bursting; otherwise, it is determined that the bursting fast current limiter does not need to be prepared for bursting; after it is determined that the bursting fast current limiter needs to be prepared for bursting, obtaining port current data of the bursting fast current limiter, determining whether a port of the bursting fast current limiter fails according to the port current data and the current limiter current data of the bursting fast current limiter, and sending a prohibition signal to an adjacent bursting fast current limiter when the port fails; if the bursting fast current limiter needs to be prepared for bursting and no prohibition signal is received, outputting a bursting instruction to control the bursting fast current limiter to burst; wherein the port of the bursting fast current limiter comprises an input end and an output end, and the positive direction of the current of the bursting fast current limiter flows from the input end to the output end; the port current data of the bursting fast current limiter comprises input end current data and output end current data; the input end current data and the output end current data each comprise a current value and a current direction; the sending of the prohibition signal to the adjacent bursting fast current limiter when the port fails comprises: if the input end of the bursting fast current limiter fails, sending the prohibition signal to the bursting fast current limiter adjacent to the output end thereof; if the output end of the bursting fast current limiter fails, sending the prohibition signal to the bursting fast current limiter adjacent to the input end thereof; the determination of whether the port of the bursting fast current limiter fails comprises: performing correlation calculation on the current limiter current and the port current of the bursting fast current limiter, which is represented as: ； wherein, denotes the correlation coefficient, denotes the total number of sampling points, denotes the sampling points of the i-th current limiter current, denotes the sampling points of the i-th port current, denotes the standard deviation of the current limiter current, denotes the standard deviation of the port current, denotes the mean value of the current limiter current, denotes the mean value of the port current; if the correlation coefficient r of a continuous setting value number is greater than 0.75, it is determined that the output end fails; if the correlation coefficient r of a continuous setting value number is less than -0.75, it is determined that the input end fails.

2. The method of selective action control of the bursting fast current limiter according to claim 1, characterized by that: after the setting value of the current of the bursting fast current limiter is obtained, the positive direction of the current flowing through the bursting fast current limiter is also obtained.

3. The method of selective action control of the bursting fast current limiter according to claim 1, characterized by that: the determination of whether the port of the bursting fast current limiter fails further comprises: differencing the phase of the current limiter current and the phase of the port current of the bursting fast current limiter; if the phase difference is less than or equal to 15°, it is determined that the output end fails; if the phase difference is within 165°-195°, it is determined that the input end fails.

4. The method of selective action control of the bursting fast current limiter according to claim 1, characterized in that, further comprising: if the bursting fast current limiter receives the prohibition signal, no bursting instruction is sent to the bursting fast current limiter.

5. A selective action control device for a pyro-quick current limiter, characterized by, The method comprises the following steps: a data acquisition module is configured to obtain a setting value of the current of the bursting fast current limiter; a bursting determination module is configured to, when current flows through the bursting fast current limiter, obtain current limiter current data flowing through the bursting fast current limiter, and determine whether the current limiter current data is greater than the setting value; if the current limiter current data is greater than the setting value, it is determined that the bursting fast current limiter needs to be prepared for bursting; otherwise, it is determined that the bursting fast current limiter does not need to be prepared for bursting; after it is determined that the bursting fast current limiter needs to be prepared for bursting, a port determination module is configured to obtain port current data of the bursting fast current limiter, determine whether a port of the bursting fast current limiter fails according to the port current data and the current limiter current data of the bursting fast current limiter, and send a prohibition signal to an adjacent bursting fast current limiter when the port fails; The fault judgment module is configured to, after judging that the burst fast current limiter needs to be prepared for bursting, acquire port current data of the burst fast current limiter, judge whether a port of the burst fast current limiter has a fault according to the port current data of the burst fast current limiter and current limiter current data, and send an inhibition signal to an adjacent burst fast current limiter when the port has a fault; The instruction sending module is configured to, if the burst fast current limiter needs to be prepared for bursting and no inhibition signal is received, output a bursting instruction to control the burst fast current limiter to burst. The port of the burst fast current limiter includes an input end and an output end, and a positive direction of the burst fast current limiter current flows from the input end to the output end; the port current data of the burst fast current limiter includes input end current data and output end current data; the input end current data and the output end current data each include a current value and a current direction. The sending of the inhibition signal to the adjacent burst fast current limiter when the port has a fault includes: if the input end of the burst fast current limiter has a fault, sending the inhibition signal to the burst fast current limiter adjacent to the output end thereof; and if the output end of the burst fast current limiter has a fault, sending the inhibition signal to the burst fast current limiter adjacent to the input end thereof. The judgment of whether the port of the burst fast current limiter has a fault includes: performing correlation calculation on the current limiter current and the port current of the burst fast current limiter, and being expressed as: if the correlation coefficient r of a continuous set value number is greater than 0.75, it is judged that the output end has a fault; and if the correlation coefficient r of the continuous set value number is less than -0.75, it is judged that the input end has a fault. ； wherein, denotes the correlation coefficient, denotes the total number of sampling points, denotes the sampling points of the i-th current limiter current, denotes the sampling points of the i-th port current, denotes the standard deviation of the current limiter current, denotes the standard deviation of the port current, denotes the mean value of the current limiter current, denotes the mean value of the port current; The plurality of burst fast current limiters each include:

6. A burst mode fast current limiter selectively actuated control system, characterized by, The current collection unit is configured to collect current limiter current data and port current data of the burst fast current limiter. The communication unit is configured to receive an inhibition signal of an adjacent burst fast current limiter or send an inhibition signal to an adjacent burst fast current limiter. The processing unit is configured to execute the burst fast current limiter selective action control method of any one of claims 1-4. The bursting execution unit is configured to execute the burst fast current limiter according to the bursting instruction output by the processing unit. The program is executed by the processor to implement the steps of the burst fast current limiter selective action control method of any one of claims 1-4.

7. A computer readable storage medium having stored thereon a computer program, characterized in that, ​

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