Wide spatial distribution of pulse power device emergency shutdown system and method

Abstract

The application provides an emergency shutdown system and method for a wide spatial distribution pulse power device, comprising: a remote centralized emergency shutdown control module, configured to generate and output multiple emergency shutdown control signals in response to an emergency shutdown trigger event; local partition emergency shutdown control modules, respectively arranged in different local partitions, each local partition emergency shutdown control module being connected to the remote centralized emergency shutdown control module through an optical fiber, configured to receive one emergency shutdown control signal and expand it into multiple partition emergency shutdown control signals; and terminal emergency shutdown control modules, arranged in power distribution modules and pulse power components in each local partition, each terminal emergency shutdown control module being connected to the local partition emergency shutdown control module of the local partition to which the terminal emergency shutdown control module belongs through an optical fiber, configured to receive one partition emergency shutdown control signal and control power-off of the power distribution module or the pulse power component. The application realizes reliable emergency shutdown control of large-scale distributed nodes and effectively reduces the impact of emergency shutdown power-off on the power grid.

Description

Technical Field

[0001] This invention relates to the field of emergency shutdown technology for widely spatially distributed pulsed power devices, and specifically to an emergency shutdown system and method for widely spatially distributed pulsed power devices. Background Technology

[0002] Emergency stop control is a key technology to ensure the safe operation of pulse power devices. For large pulse power devices, they store and release extremely high energy instantaneously during operation. Once faults such as insulation breakdown, overcurrent, or overtemperature occur, the power supply must be reliably cut off and the stored energy safely released in a very short time through the emergency stop system. If the shutdown is not timely, it may not only cause damage to the equipment itself, but may also trigger a chain of safety accidents. Therefore, an efficient and reliable emergency stop system is of great significance to improving the safety level of the device and reducing the risk of accidents. However, as pulse power technology develops towards higher power and larger scale, the device exhibits the significant characteristic of wide spatial distribution. The number of terminal equipment nodes to be controlled is in the tens of thousands, and the spatial distribution area is extremely wide, with each device deployed in a physical space that is far apart.

[0003] Currently, most publicly available emergency stop control technologies focus on local emergency power-off circuit designs or emergency stop schemes for small-scale, centralized devices. While they can provide emergency stop functionality to some extent, they generally suffer from several significant drawbacks: existing solutions are mostly single-point or single-level control, with extremely limited signal distribution and transmission capabilities. For example, patent application CN216435720U discloses a start-up control system for an electric pulse generator's emergency stop, including a main control board, an emergency stop module, a drive board, and a pulse output switch. The emergency stop module can switch between the drive board and the main control board to achieve rapid response in the electric pulse generator's emergency stop operation. However, this solution is still limited to local control of a single device or a small-scale system, and it does not provide a systematic architecture design for reliable signal distribution, expansion, and transmission from the control center to thousands of remote nodes. When facing large-scale... When there are thousands or tens of thousands of terminal devices distributed in different areas, no systematic architecture design is provided for the reliable distribution, extension and transmission of signals from the control center to tens of thousands of remote nodes. If the existing centralized solution is simply adopted, it will face problems such as massive laying of control cables, severe attenuation and distortion of signals over long distances, and the reliability of the entire system will become extremely low. The emergency stop control unit in CN103746449A is connected to the fiber optic signal receiving unit through two fiber optic channels. The fiber optic signal receiving unit controls the power distribution control unit to cut off the front-end power supply of the high-voltage energy storage device. However, this solution is limited to remote emergency stop protection of a single path and does not build a full-link fiber optic hierarchical transmission architecture from the centralized control center to the local partition and then to the massive number of terminal devices. It cannot meet the anti-interference requirements of large-scale node parallel emergency stop control in a wide spatial distribution scenario.

[0004] In widely distributed pulsed power devices, patent application CN103472782A discloses a distributed timing trigger control system, including multiple timing controllers and optical fibers connecting them into a tree network. It also includes trigger input, clock input, and emergency stop input. The distributed system structure is realized by using a tree network and optical fibers. However, this scheme is mainly aimed at the accurate distribution of timing trigger signals. Its emergency stop input is only an auxiliary function of the system. It has not been specifically optimized for the grid impact problem in large-scale emergency power outage scenarios. If all terminal devices achieve synchronous power outage at the same time through the emergency stop system, the instantaneous drop in total power will form a huge grid load jump, causing serious grid voltage fluctuations and current surges. This may not only interfere with or damage other precision equipment on the same grid, but may even cause regional grid protection to malfunction. Existing emergency stop technologies have not proposed timing control strategies aimed at mitigating the above problems. Furthermore, existing literature largely focuses on the design of specific local circuits or pure control methods. On the one hand, it lacks hardware-level design for signal transmission reliability and fault-tolerant mechanisms under harsh conditions of strong electromagnetic interference. On the other hand, it also lacks an overall control method that combines macroscopic partitioned timing control with terminal device-level programmable delay response. Therefore, existing technologies cannot construct an engineering-feasible emergency stop system for widely distributed pulsed power devices that combines high reliability and grid adaptability. In conclusion, there is an urgent need for a technical solution that can solve the emergency stop problem of ultra-large-scale pulsed power devices in widely distributed scenarios, and minimize the secondary impact of the emergency stop operation on the power grid while ensuring the safety of personnel and equipment.

[0005] Therefore, existing technologies still need further development. Summary of the Invention

[0006] The purpose of this invention is to overcome the above-mentioned technical deficiencies and provide an emergency shutdown system and method for widely spatially distributed pulse power devices, so as to solve the problems of difficulty in emergency stop control of widely spatially distributed pulse power devices and the large impact of large-scale power outages on the power grid in the prior art.

[0007] To achieve the above-mentioned technical objectives, according to a first aspect of the present invention, the present invention provides an emergency shutdown system for a widely spatially distributed pulsed power device, comprising: The remote centralized emergency stop control module is used to respond to emergency stop trigger events and generate and output multiple emergency stop control signals; Local partition emergency stop control modules are set in different local partitions. Each local partition emergency stop control module is connected to the remote centralized emergency stop control module 100 via optical fiber. It is used to receive one emergency stop control signal and expand it into multiple partition emergency stop control signals. The terminal emergency stop control module is installed in the power distribution module and pulse power component in each local partition. Each terminal emergency stop control module is connected to the local partition emergency stop control module of its local partition through an optical fiber. It is used to receive one partition emergency stop control signal and control the power outage of the power distribution module or pulse power component in which it is located.

[0008] Specifically, the remote centralized emergency stop control module expands the generated emergency stop control signal into k channels and outputs them to k local partition emergency stop control modules respectively; Each of the local partition emergency stop control modules includes a first-level optical signal expansion unit and a second-level optical signal expansion unit. The first-level optical signal expansion unit is used to expand the received emergency stop control signal into m signals and output them to m second-level optical signal expansion units. Each second-level optical signal expansion unit is used to expand the received signal into n+1 signals to correspond to n sets of pulse power components and 1 set of power distribution modules in a functional sub-partition.

[0009] Specifically, both the emergency stop control signal and the partition emergency stop control signal are optical signals; The terminal emergency stop control module is configured as follows: The optical signal is continuously received, and the frequency and / or duty cycle of the optical signal are detected. When the detected frequency and / or duty cycle remain within the preset range, control the device to maintain power supply; When the optical signal is interrupted, or the detected frequency and / or duty cycle exceeds the preset range, a power-off operation is performed.

[0010] Specifically, the optical signals output by the remote centralized emergency stop control module and the local partition emergency stop control module are, under normal conditions, high-repetition-rate pulse optical signals with a preset duty cycle and a preset frequency.

[0011] Specifically, the remote centralized emergency stop control module includes a delay unit, which is used to set an incremental delay sequence for emergency stop control signals output to different local partitions, so as to perform time-sharing power outages on different local partitions.

[0012] Specifically, the terminal emergency stop control module located in the pulse power component is configured to perform a power-off operation without delay or after a first delay in response to the zone emergency stop control signal; The terminal emergency stop control module, located in the power distribution module, is configured to perform a power-off operation after a second delay in response to the same zone emergency stop control signal. The second delay is greater than the first delay, so that the pulse power components in the same functional sub-zone are de-energized before the power distribution module.

[0013] Specifically, the terminal emergency stop control module includes: A photoelectric conversion circuit is used to convert received optical signals into electrical signals; The signal detection and delay control circuit is used to detect the frequency and / or duty cycle characteristics of the electrical signal to determine whether it is an emergency stop state, and outputs a drive signal after a preset delay when it is determined to be an emergency stop state. The relay, driven by the drive signal, disconnects the main circuit of the device in which it resides.

[0014] According to a second aspect of the present invention, an emergency shutdown method for a widely spatially distributed pulsed power device is provided, comprising: S100, in response to an emergency stop triggering event, generates an emergency stop control signal; S200. Distribute the emergency stop control signal to multiple local partitions. Within each local partition, expand the received emergency stop control signal into a multi-partition emergency stop control signal and distribute it to each power distribution module and pulse power component within the local partition. S300 controls different local partitions, and / or different device groups within the same local partition, and / or different types of devices within the same device group to perform time-sharing power outages according to a preset delay sequence.

[0015] Specifically, the method for controlling time-sharing power outages between different local partitions, and / or between different device groups within the same local partition, and / or between different types of devices within the same device group, according to a preset delay sequence, includes: Control different local partitions to cut off power in a time-sharing manner according to a first preset delay sequence, and / or control different types of terminal devices within the same local partition to cut off power in a time-sharing manner according to a second preset delay sequence.

[0016] Specifically, the method for controlling different types of terminal devices within the same local partition to disconnect power in a time-sharing manner according to a second preset delay sequence includes: The control pulse power component performs a power-off operation without delay or after a first delay, and the control power distribution module performs a power-off operation after a second delay, wherein the second delay is greater than the first delay, so that the pulse power component is powered off before the power distribution module.

[0017] Beneficial effects: This invention provides an emergency shutdown system and method for widely distributed pulsed power devices. By constructing a three-level distributed control architecture of remote central control, local partition control, and terminal devices, it solves the technical problem that existing technologies cannot handle the wide-area distribution of tens of thousands of device nodes. In this system, the remote central emergency stop control module responds uniformly and generates an emergency stop signal, which is distributed to the local partition emergency stop control modules via optical fiber for signal amplification. Finally, the terminal emergency stop control module executes the power cut, achieving efficient and reliable distribution of the emergency stop signal from the control center to a large number of terminals. The entire link uses optical fiber as the signal transmission medium, avoiding strong electromagnetic interference generated during the operation of the pulsed power device, and avoiding the attenuation and distortion problems of electrical signals during long-distance transmission. This significantly improves the reliability of the system in harsh electromagnetic environments. While performing emergency power cuts, the system can effectively reduce the instantaneous impact on the power grid, balancing safety and grid friendliness. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the composition of the wide spatial distribution pulse power device emergency shutdown system provided in a specific embodiment of the present invention; Figure 2 This is a flowchart of an emergency shutdown method for a widely spatially distributed pulsed power device provided in a specific embodiment of the present invention; Figure 3 This is a schematic diagram of the emergency shutdown system architecture of the wide spatial distribution pulse power device provided in a specific embodiment of the present invention; Figure 4 This is a timing waveform diagram of the emergency stop control signal provided in a specific embodiment of the present invention; Figure 5 This is a schematic diagram of the interval emergency stop timing provided in a specific embodiment of the present invention; Figure 6 This is a schematic diagram of isochronous grouping expansion of emergency stop signals within a partition provided in a specific embodiment of the present invention; Figure 7 This is a schematic diagram of the terminal emergency stop control module provided in a specific embodiment of the present invention.

[0019] The reference numerals in the above figures are as follows: 100. Remote centralized emergency stop control module; 200. Local partition emergency stop control module; 300. Terminal emergency stop control module. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Based on the embodiments in this application, other similar embodiments obtained by those skilled in the art without creative effort should all fall within the scope of protection of this application. Furthermore, directional terms mentioned in the following embodiments, such as "up," "down," "left," and "right," are only for reference to the directions in the accompanying drawings; therefore, the directional terms used are for illustrative purposes and not for limiting the invention.

[0021] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0022] Example 1 Please see Figure 1 This embodiment provides an emergency shutdown system for a widely distributed pulse power device. The system constructs a hierarchical control architecture adapted to a large number of distributed nodes. The aforementioned widely distributed pulse power device emergency shutdown system includes a remote centralized emergency stop control module 100, a local partitioned emergency stop control module 200, and a terminal emergency stop control module 300.

[0023] The remote centralized emergency stop control module 100 is used to respond to emergency stop trigger events, generate and output multiple emergency stop control signals. Specifically, the remote centralized emergency stop control module 100 is typically deployed in a centralized control room, serving as the command source for the entire emergency stop system. It receives trigger signals from remote emergency stop buttons, zone emergency stop buttons, or external control system interlocking interfaces, and converts these trigger events into standardized optical emergency stop control signals. In this embodiment, optical signals are used instead of traditional electrical signals as the carrier of emergency stop commands because pulsed power devices generate extremely strong high-voltage, high-current discharges and transient electromagnetic fields during operation. Traditional cable transmission is highly susceptible to electromagnetic interference, leading to signal distortion or false triggering. Furthermore, long-distance cable transmission suffers from impedance matching difficulties and signal attenuation problems. Optical fiber transmission media has inherent electrical isolation characteristics and anti-electromagnetic interference capabilities, ensuring the integrity and reliability of emergency stop signal transmission over a wide spatial range.

[0024] Local partition emergency stop control modules 200 are set up in different local partitions. Each local partition emergency stop control module 200 is connected to the remote centralized emergency stop control module 100 via optical fiber. It is used to receive one emergency stop control signal and expand it into multiple partition emergency stop control signals. Specifically, considering the large number and dispersed physical locations of the terminal nodes of the widely distributed pulse power device, this embodiment does not adopt a single-level star topology that directly connects all terminals point-to-point from the control center. Instead, it introduces local partition emergency stop control modules 200 as intermediate aggregation and distribution nodes. Each local partition corresponds to an independent physical area or functional unit of the device. The local partition emergency stop control module 200 receives emergency stop commands from the remote centralized emergency stop control module 100 via remote optical fiber and completes the signal replication and expansion locally. This design not only significantly reduces the number of output ports of the remote centralized emergency stop control module 100 and the length of remote optical fiber laying, but also realizes the regionalization of emergency stop management, which facilitates subsequent maintenance and fault isolation.

[0025] The terminal emergency stop control module 300 is installed in the power distribution module and pulse power component within each local zone. Each terminal emergency stop control module 300 is connected to the local zone emergency stop control module 200 of its respective local zone via optical fiber. It is used to receive one zone emergency stop control signal and control the power outage of the power distribution module or pulse power component in its local zone. Specifically, the terminal emergency stop control module 300 is the final execution unit of the emergency stop command. It is directly embedded or integrated into the protected equipment (such as Marx generators, pulse forming lines, linear transformer drivers, magnetic compression generators, laser pump power supplies, and other pulse power components and their supporting power distribution modules) or in a location adjacent to it. The terminal emergency stop control module 300 receives the extended zone emergency stop control signal through the zone optical fiber and drives the internal circuit breaker and other switching devices to operate, cutting off the main circuit power supply of the equipment. Due to the use of a full optical fiber link, the terminal side completely avoids the coupling interference of the strong electromagnetic environment on the control circuit, ensuring the reliable execution of the emergency stop power-off function under the worst operating conditions.

[0026] It should be further explained that the aforementioned remote centralized emergency stop control module 100, local partition emergency stop control module 200, and terminal emergency stop control module 300 enable different local partitions, different functional sub-partitions within the same local partition, and power distribution modules and pulse power components within the same functional sub-partition to perform time-sharing power outages according to a preset delay sequence.

[0027] In this embodiment, the remote centralized emergency stop control module 100 expands the generated emergency stop control signal into k channels and outputs them to k local partition emergency stop control modules 200 respectively. Here, k represents the total number of local partitions in the system, and its value can be flexibly set according to the actual geographical layout and functional division of the device. For example, for a large laser drive device, k can be 10-20 or even more. This first-level expansion decomposes the global emergency stop task into k parallel partition-level tasks, effectively reducing the load pressure on the central module.

[0028] Furthermore, each local partition emergency stop control module 200 includes a first-level optical signal expansion unit and a second-level optical signal expansion unit. The first-level optical signal expansion unit is used to expand the received emergency stop control signal into m signals and output them to m second-level optical signal expansion units. Each second-level optical signal expansion unit is used to expand the received signal into n+1 signals to correspond to n sets of pulse power components and 1 set of power distribution modules in a functional sub-partition.

[0029] It should be noted that the two-stage optical signal expansion mechanism described above constitutes the core architectural feature of this embodiment. The first-stage optical signal expansion unit receives the input signal S1 from the remote optical fiber and losslessly replicates it into m parallel signals (S1 to Sm), each signal corresponding to a functional sub-partition. Subsequently, m second-stage optical signal expansion units respectively receive the corresponding first-stage output signal and expand it again into n+1 terminal drive signals (such as Gi / 1 / 0 to Gi / 1 / n). Here, n represents the number of pulse power components in the functional sub-partition, with the additional 1 channel... The signal is specifically used to control the power distribution module of this sub-zone. Therefore, a single local zone emergency stop control module 200 can support a total of m×(n+1) terminal nodes. For example, if m=5 and n=20, a single local zone can cover 105 terminal devices. If the system contains 10 such zones, the total number of nodes can reach 1050. It should be understood that the specific values ​​of m and n are not fixed, but can be adjusted according to actual engineering needs. For example, in some high-density integration scenarios, n can be larger, while in distributed sparse scenarios, m can be more. Through this tree-like hierarchical expansion architecture, this solution achieves effective coverage of a large number of terminal nodes without increasing the hardware complexity of the remote centralized emergency stop control module 100, solving the technical problems of addressing and wiring faced by emergency stop systems for widely distributed pulse power devices.

[0030] In one specific embodiment, both the emergency stop control signal and the zone emergency stop control signal are optical signals. Specifically, using optical signals as the carrier of emergency stop commands not only provides advantages such as resistance to strong electromagnetic interference and electrical isolation, but also provides a physical basis for subsequent fault safety detection based on signal characteristics. It should be understood that although this embodiment preferably uses laser or LED optical signals of a specific wavelength, in other embodiments, any signal within the spectral range that can be transmitted through optical fiber and recognized by the terminal photoelectric conversion device is applicable.

[0031] Furthermore, to balance system safety and the long-term operation of optoelectronic devices, the optical signals output by the remote centralized emergency stop control module 100 and the local partitioned emergency stop control module 200 are, under normal conditions, high-repetition-rate pulse optical signals with preset duty cycles and preset frequencies, combined with, for example... Figure 4 The timing waveform diagram of the emergency stop control signal shown shows that after the system is powered on and running normally at time T0, the output is not a continuous DC optical signal, but a repetitive frequency optical signal in the form of a periodic rectangular pulse sequence.

[0032] In a preferred embodiment, the typical characteristics of the aforementioned high-repetition-rate pulsed optical signal can be set to a duty cycle of 25% and a frequency of 10kHz. The thermodynamic basis for choosing this parameter combination is that, compared to a continuous emission mode with a 100% duty cycle, a 25% duty cycle reduces the average on-time of the laser or light-emitting diode in the optical transmission module to one-quarter of its original value, thereby significantly reducing the heat deposition rate inside the device. Under long-term standby or operation conditions of the pulsed power device, this intermittent emission mechanism can effectively slow down the light decay process of the optoelectronic device, prevent wavelength drift or output power reduction due to overheating, and thus extend the overall service life of the emergency stop control module and improve system reliability. It should be emphasized that in practical engineering, the preset duty cycle and preset frequency can be flexibly adjusted according to the heat dissipation conditions of the optical transmission module, response speed requirements, and bandwidth characteristics of the terminal detection circuit.

[0033] Furthermore, for the aforementioned high-repetition-rate pulse optical signal, the terminal emergency stop control module 300 is configured to: continuously receive the optical signal and detect the frequency and / or duty cycle of the optical signal; when the detected frequency and / or duty cycle remains within a preset range, control the device to maintain power supply; when the optical signal is interrupted, or the detected frequency and / or duty cycle exceeds the preset range, perform a power-off operation.

[0034] It should be noted that the terminal emergency stop control module 300 not only includes a simple light intensity detection unit, but also integrates a logic processing unit capable of performing time-domain feature analysis on electrical signals. During normal operation, the terminal module verifies in real time whether the received light pulses simultaneously meet the dual constraints of frequency and duty cycle. Only when both of these characteristic parameters fall within a preset safety window is the system determined to be in a normal state, and the power supply circuit of the back-end power distribution module or pulse power component is kept closed. Compared with the traditional single light intensity threshold detection, this detection logic based on multi-dimensional feature verification can effectively filter out interference from ambient stray light or leakage light from nearby equipment, because random interference light usually does not have specific frequency and duty cycle characteristics, thus avoiding unplanned shutdowns caused by false triggering. On the other hand, it can identify potential faults in the light transmission module. For example, when the light source driving circuit malfunctions, causing frequency drift or duty cycle distortion, even if the light intensity is still within the detectable range, the terminal module will immediately trigger power-off protection due to feature deviation. Regarding the setting of the preset range, it can be a fixed tolerance range centered on the nominal value, or an adaptive window that is dynamically adjusted according to the ambient temperature or the degree of device aging. This application does not limit this. When the optical signal is completely interrupted due to situations such as fiber breakage, connector detachment, or power failure of the control module, the terminal module will also automatically perform a power-off operation due to the loss of effective feature input, ensuring that the system can be guided to a safe state when any single fault point fails, thus maximizing the operational safety of the wide spatially distributed pulse power device.

[0035] In this embodiment, in response to the grid impact problem that may be caused by the emergency power outage of a large-scale pulse power device, the remote centralized emergency stop control module 100 includes a delay unit. The delay unit is used to set an incremental delay sequence for the emergency stop control signals output to different local partitions, so as to perform time-sharing power outages for different local partitions.

[0036] It should be noted that, according to Figure 5 The diagram shown illustrates the emergency stop timing for the different zones. When an emergency stop event occurs, the remote centralized emergency stop control module 100 does not simultaneously send valid emergency stop power-off signals to all k local zones (or simultaneously stop sending normal operating optical signals). Instead, it applies a delay with a strict timing rule to each output signal through its internal delay unit.

[0037] In a preferred embodiment, the above-mentioned incremental delay sequence can be represented as [0, ΔT, 2ΔT, ..., (k-1)×ΔT], where ΔT is a preset time step, such as... Figure 5As shown, after the emergency stop command is generated at time T0, the emergency stop control signal of the first local partition takes effect immediately (delay is 0), the signal of the second local partition takes effect at time ΔT, the signal of the third local partition takes effect at time 2ΔT, and so on, until the kth local partition completes the response at time (k-1)×ΔT. This incremental sequence design distributes the load shedding actions of the k partitions, which were originally concentrated at the same instant, evenly on the time axis, forming an orderly gradient unloading process. From the perspective of the physical mechanism of power grid interaction, pulse power devices usually have instantaneous power demand of megawatts or even gigawatts. If all partitions are de-energized at the same time, it is equivalent to the power grid suddenly losing a huge equivalent load, which can easily cause a sharp rise or oscillation of the bus voltage. In severe cases, it may cause the protection of the upper substation to malfunction or damage to sensitive equipment. By adopting the above time-sharing power outage strategy, the power change rate per unit time is limited to an acceptable range, effectively suppressing the voltage fluctuation of the power grid and achieving compatibility between emergency stop operation and power grid stability. In other implementations, depending on the grid impedance characteristics or the unevenness of load distribution, the above-mentioned delay sequence can also be a non-linear increasing sequence (such as exponential increase or piecewise linear increase), as long as the power outage times of each zone are staggered in time and arranged sequentially as a whole.

[0038] As one implementation method, the delay unit can consist of multiple mechanical delay relays. The inherent operating time difference of the relays or adjustable airbag damping can be used to achieve graded delays. This method is simple in structure, has strong anti-interference capabilities, and is suitable for applications where delay accuracy requirements are not high and the environment has extremely high electromagnetic noise. The delay unit can also be based on a digital delay circuit built using programmable logic devices (such as FPGAs) or microcontrollers (MCUs). In this architecture, the time step ΔT in the delay sequence is no longer a fixed hardware parameter, but a digital quantity that can be dynamically adjusted through software configuration. For example, when the device is connected to a large power grid with strong impact resistance, ΔT can be set to a smaller value to accelerate the overall emergency stop speed; conversely, when the device operates in a weak power grid environment or has strict power quality requirements, ΔT can be automatically or manually adjusted to a larger value to further reduce the intensity of transient impacts. In addition, a dedicated digital delay line chip or an analog RC charging and discharging circuit combined with a comparator can also be used to achieve delays. Regardless of the hardware carrier used, the core function is to generate a controllable, incremental signal transmission delay, thereby supporting the execution of a segmented, time-division power-off strategy.

[0039] In this embodiment, the terminal emergency stop control module 300 disposed in the pulse power component is configured to perform a power-off operation without delay or after a first delay in response to the partition emergency stop control signal; the terminal emergency stop control module 300 disposed in the power distribution module is configured to perform a power-off operation after a second delay in response to the same partition emergency stop control signal; the second delay is greater than the first delay, so that the pulse power component in the same functional sub-partition is powered off before the power distribution module in a time-sharing manner.

[0040] It should be noted that the above-mentioned time-sharing power-off strategy establishes the timing sequence of disconnection on the load side before the power supply side, which can protect the switching devices in the power distribution module and suppress operational overvoltage. In the pulse power device, the pulse power component is the core load for energy storage and release. If the main circuit breaker of the upstream power distribution module is directly disconnected under energized conditions, it is very easy to generate strong arc discharge due to load-bearing tripping. This will not only severely burn the circuit breaker contacts and shorten the service life of the equipment, but may also induce transient overvoltage to impact the power grid. By setting the second delay to be greater than the first delay, it is ensured that when the emergency stop command is issued, each pulse power component first completes its own energy discharge or tripping action. After the load current drops to a safe level or is completely disconnected, the power distribution module then performs the main circuit disconnection operation. In a preferred embodiment, the first delay can be set to 0ms (i.e., immediate action) or a very short delay that only includes the inherent action time of the relay, while the second delay Δt is usually set to be greater than 20ms, which is equivalent to more than one complete cycle of 50Hz AC power, which is sufficient to avoid current peaks and ensure that the load-side switch has completed disconnection.

[0041] In this embodiment, the terminal emergency stop control module 300 includes a photoelectric conversion circuit, a signal detection and delay control circuit, and a relay. The photoelectric conversion circuit is used to convert the received optical signal into an electrical signal. The signal detection and delay control circuit is used to detect the frequency and / or duty cycle characteristics of the electrical signal to determine whether it is an emergency stop state. When it is determined to be an emergency stop state, it outputs a drive signal after a preset delay. The relay is driven by the drive signal to disconnect the main circuit of the device.

[0042] In this embodiment, the aforementioned photoelectric conversion circuit serves as the front-end interface, converting the optical pulse signal from the partitioned optical fiber into a high-fidelity level signal that can be processed by the back-end circuit. Simultaneously, it achieves electrical isolation between high-voltage and low-voltage circuits. The signal detection and delay control circuit is the core logic unit of this module. It not only undertakes the task of emergency stop signal verification—that is, checking whether the frequency and duty cycle meet preset characteristics—but also integrates high-precision timing control functions. Unlike traditional analog delay circuits based on resistor-capacitor charging and discharging, the signal detection and delay control circuit in this embodiment is preferably constructed using digital programmable processors such as Field Programmable Gate Arrays (FPGAs) or Microcontrollers (MCUs). On the one hand, the preset delay (such as the aforementioned first and second delays) can be flexibly configured through software parameters, adapting to the characteristics of different types of circuit breakers or loads without changing the hardware circuit. On the other hand, the digital timer is unaffected by temperature drift and component aging, ensuring reliable execution of the time-sharing power-off logic. The relay, as the final power execution component, remains closed and conductive under normal conditions, only disconnecting the main circuit upon receiving a valid drive signal, thus conforming to the fail-safe design principle. In practical engineering implementations, functions such as photoelectric conversion, signal detection, and delay control can also be integrated into a single chip or hybrid integrated circuit, as long as it has equivalent signal analysis and timing control capabilities. Furthermore, for certain special applications requiring extremely high response speeds, relays can be replaced with solid-state switches (such as IGBTs or thyristor modules) to achieve contactless, rapid disconnection.

[0043] See Figures 3-6 The working principle of this invention will be illustrated below with specific examples: like Figure 3 As shown, the wide spatial distribution pulse power device emergency stop system in this embodiment includes a remote centralized emergency stop button (hereinafter referred to as "remote emergency stop button"), a remote centralized emergency stop control module 100, a remote centralized emergency stop control signal transmission optical fiber (hereinafter referred to as "remote optical fiber"), a local partition emergency stop control module 200, a partition emergency stop button, a partition emergency stop control signal transmission optical fiber (hereinafter referred to as "partition optical fiber"), a power distribution module, and a pulse power component.

[0044] Widely distributed pulsed power devices are characterized by a large number of pulsed power components and a wide spatial distribution area, such as... Figure 3 As shown, the widely distributed pulse power device contains k local partitions, each local partition consists of m functional sub-partitions, each functional sub-partition consists of 1 power distribution module and n pulse power components, and 1 power distribution module distributes power to n pulse power components in the same functional sub-partition, for a total of N=k×m×(n+1) power device emergency stop control nodes; The aforementioned pulsed power device is a device that can release stored energy in a very short time to generate high-power pulses, including but not limited to Marx generators, pulse forming line devices, linear transformer drivers, magnetic compression generators, laser pump power supplies, etc. Existing emergency stop control methods are mostly solutions for small-scale devices, and cannot efficiently achieve overall emergency stop operation of large-scale pulse power components across regions. This embodiment realizes emergency stop control of multiple terminal power distribution modules and pulse power components by distributing and extending emergency stop signals at two levels: remote and local partitions. Compared with the shortcomings of existing emergency stop systems, it can solve the system emergency stop requirements in application scenarios with wide spatial distribution and huge pulse power component scale.

[0045] The wide-space distributed pulse power device emergency stop system in this embodiment is divided into three parts according to the different functions and placement locations of each module: The first part is a remote emergency stop button and a remote centralized emergency stop control module 100, which is deployed in the central control room. Its function is to control and transmit emergency stop signals through the emergency stop button; the second part is a local zone emergency stop control module 200, which is deployed at the local zone site. Its function is to receive emergency stop signals from the remote centralized emergency stop control module 100 and extend the emergency stop signals; the third part is an emergency stop signal receiving module, which is installed in each power distribution module and pulse power component. Its function is to control the circuit breaker to trip and cut off power by receiving emergency stop signals.

[0046] The working process of the emergency stop system for a widely distributed pulsed power device is as follows: 1) Pressing the remote emergency stop button generates an emergency stop signal that is expanded into k emergency stop signals by the remote centralized emergency stop control module 100; 2) k emergency stop signals are transmitted to local partition emergency stop control modules 1 to k respectively through 1~k remote optical fibers; 3) After receiving the emergency stop signal, each local partition emergency stop control module 200 expands it again to generate m×(n+1) emergency stop signals; 4) m×(n+1) emergency stop signals are transmitted in groups to the power distribution modules and pulse power components in m functional sub-zones respectively; 5) Upon receiving an emergency stop signal, the power distribution module and pulse power component in each functional sub-zone control the circuit breaker to trip and disconnect the power.

[0047] It should be noted that another important measure of this system is that fiber optic connections are used between the remote centralized emergency stop control module 100 and the local zone emergency stop control module 200, as well as between the local zone emergency stop control module 200 and the terminal power distribution module and pulse power components. Emergency stop signals are transmitted via fiber optics. Compared with cable transmission, this avoids abnormal phenomena such as signal distortion, signal amplitude reduction, and impedance mismatch caused by long-distance transmission of electrical signals. In pulse power devices, strong electromagnetic interference caused by high-voltage and high-current discharge is common. Using fiber optics as the emergency stop signal transmission medium is less susceptible to strong electromagnetic interference, thus enhancing the reliability of emergency stop signal distribution and transmission.

[0048] This embodiment is designed based on the fail-safe principle, meaning that an emergency stop power-off operation is automatically executed when any part of the emergency stop equipment fails, ensuring the reliability of the emergency stop system to the greatest extent and preventing the dangerous situation where the emergency stop equipment fails and power is not cut off when a major fault occurs in the pulse power component. To realize the fault emergency stop power-off function, the judgment logic of the emergency stop signal is set to normal working mode when there is light and no power-off operation is executed, and emergency stop mode when there is no light and power-off operation is executed. This emergency stop judgment logic can ensure that the power distribution module and pulse power component are in a safe and controllable state when the emergency stop control module (including the remote centralized emergency stop control module 100 and the local partition emergency stop control module 200) is malfunctioning or when there is no light signal output.

[0049] Since the normal operating mode is when there is light, the optical transmission module in the emergency stop control module is in the light-emitting state for a long time. Under long-term operation, the output power of the optical transmission module will be affected, its service life will be reduced, and the risk of device failure will be increased. To address this issue, a repetition frequency optical signal with a certain duty cycle is used as the normal operating signal. This can reduce the overall conduction time of the optical transmission module, reduce heat deposition in the optical transmission module, extend the module's service life, and improve the reliability of the emergency stop system. For example, if the optical repetition frequency signal characteristics are set to a duty cycle of 25% and a frequency of 10kHz, the overall light emission time can be reduced to 1 / 4 of the long-term light emission time. like Figure 4 As shown, after the emergency stop control module is powered on and running normally at time T0, it outputs a normal working signal with repetition frequency characteristics. After receiving the signal, the terminal power distribution module and the pulse power component continue to maintain the normal working mode. When the emergency stop button is pressed at time T1 or other emergency stop events are triggered, the emergency stop control module stops outputting the repetition frequency optical signal and is in a no-light output state. The terminal power distribution module and the pulse power component perform emergency power-off processing because they do not receive the repetition frequency signal. Because emergency shutdown of large-scale pulse power devices will cause grid load jumps and grid voltage fluctuations, in order to solve the hidden dangers caused by the above-mentioned emergency shutdown operations, an emergency shutdown control strategy is adopted, which includes increasing emergency shutdown delay in different sections, expanding isochronous grouping within each section, and time-sharing power outage of terminal equipment. The specific implementation process is as follows: (1) Increasing Emergency Stop Delay in Sections: k-1 mechanical time-delay relays are used to sequentially delay the power-off of the emergency stop signal generation unit inside the remote centralized emergency stop control module 100. The relative delay is ΔT, and the set emergency stop delay sequence is [0,ΔT,2ΔT,…,(k-1)×ΔT], which correspond to the emergency stop signal delay of k local partitions respectively. The timing control strategy is as follows: Figure 5 As shown; (2) Intra-zone isochronous grouping expansion: The emergency stop signal generated by the remote centralized emergency stop control module 100 enters the local partition emergency stop control module 200 through the remote optical fiber, and is expanded and distributed by the local partition emergency stop control module 200 for emergency stop of the terminal power distribution module and pulse power module. The internal emergency stop signal expansion principle of the local partition emergency stop control module 200 is as follows: Figure 6 As shown, it includes two levels of optical signal expansion units. The first level signal expansion unit is used to receive the emergency stop signal transmitted by the remote centralized emergency stop control module 100 and expand it into m emergency stop signals. This process does not change the characteristics of the input emergency stop signal. Each second level signal expansion unit receives the emergency stop signal input from the first level signal expansion unit and expands it again into n+1 emergency stop signals. Each second level signal expansion unit corresponds to a terminal device of a sub-functional area. That is, the n+1 emergency stop signals are respectively transmitted to one set of power distribution modules and n sets of pulse power components in the corresponding sub-functional area. The expansion and transmission of the emergency stop signal in the local partition emergency stop control module 200 by the two levels of signal expansion units do not change its delay parameters. It only expands and distributes the emergency stop signal.

[0050] (3) Time-sharing power outage of terminal equipment: The main purpose of the emergency stop system is to quickly realize emergency power outage in the event of an abnormality in the pulse power device. In order to ensure reliable power outage during emergency stop, when the emergency stop button is pressed, the pulse power component will trip first and then the power distribution module will trip. There is a certain delay Δt between the power outage of the pulse power component and the power distribution module. Understandably, by adopting time-sharing power-off technology and using redundant tripping to ensure reliable power outage, a certain delay Δt is applied, which is generally greater than 20ms, equivalent to one or more AC (50Hz) output cycles. This ensures that the pulse power component has completed tripping when the power distribution module trips, thereby reducing the impact of the overall emergency stop of the pulse power component on the circuit breaker of the power distribution module, extending its service life, and also reducing the impact on the power grid.

[0051] To enable time-sharing power outages for terminal devices, this embodiment also provides a terminal emergency stop control module 300 with emergency stop signal detection and delay setting functions. It mainly consists of a photoelectric conversion circuit, a signal detection and delay control circuit, a signal driving circuit, and relays, etc. Figure 7As shown, when the relay is in the normally closed state, the emergency stop optical signal is input into the terminal emergency stop control module 300. It is first converted into an electrical signal by the photoelectric conversion circuit and sent to the signal detection and delay control circuit. The circuit collects and judges the characteristics such as signal frequency and duty cycle. When the signal frequency and duty cycle are within the set range, it is a normal working signal, and the signal detection and delay control circuit has no drive signal output. When the signal is detected to exceed the normal range of the set frequency and duty cycle, it is regarded as an emergency stop signal. The signal detection and delay control circuit outputs a drive signal and drives the relay contacts to open, thereby realizing the power-off of the terminal device.

[0052] The aforementioned terminal emergency stop control module 300 can be set with a power-off delay. The principle is that the signal detection and delay control circuit in the terminal emergency stop control module 300 uses an FPGA or MCU as a processor, which has accurate time counting and flexible delay setting capabilities. The emergency stop response delay Δt is set by software. That is, after detecting the emergency stop signal, the delay Δt outputs a drive signal to drive the relay contacts to open, thereby realizing the delayed power-off of the terminal device.

[0053] The terminal emergency stop control module 300 is deployed in terminal equipment such as power distribution modules and pulse power components. In the emergency stop system of widely distributed pulse power devices, no delay is usually set in the pulse power components, but a certain delay is set in the power distribution modules. This realizes the time-sharing emergency stop strategy of cutting off the power of the pulse power components first and then cutting off the power of the power distribution modules. However, when the scale of widely distributed pulse power devices is huge and the number of power distribution modules and pulse power components in the local area is huge, the simultaneous power failure of pulse power devices in the same local area will still have an impact on the power grid. At this time, gradient delay power failure parameters can be set according to functional sub-regions to further reduce the number of devices that are simultaneously cut off and reduce the instantaneous impact on the power grid.

[0054] Furthermore, the aforementioned emergency stop control system can also provide three types of emergency stop trigger event input interfaces, which, compared to traditional emergency stop systems, offer better operability and applicability, as detailed below: (1) Pressing the remote emergency stop button can realize the emergency stop and power cut-off of pulse power devices with wide spatial distribution; (2) Pressing the emergency stop button for the zone can achieve emergency power cut-off of the power distribution module and pulse power device in the corresponding zone; (3) Provides an emergency stop power failure control interface. The external control system can complete the electrical connection with the remote centralized emergency stop control module 100 through this interface. When the external control system detects an abnormality or fault in real time, it can realize automatic emergency stop interlock control through software judgment. This can minimize the emergency stop power failure response time of the wide spatial distributed pulse power device and improve the device's fault emergency isolation capability.

[0055] It should be noted that this embodiment provides an emergency shutdown system for widely distributed pulsed power devices. By constructing a three-level distributed fiber optic control architecture of remote centralization, local partitioning, and terminal equipment, it solves the problem of reliable emergency shutdown of large-scale distributed nodes in strong electromagnetic interference environments. It uses high-repetition-rate pulsed optical signals as the normal operating signal, which not only follows the fault-safe principle of emergency shutdown when there is no light, but also reduces heat deposition in the optical transmission module and extends the system's service life. Through a timing control strategy that combines interval delay increments with time-sharing power-off of terminal equipment, the centralized power-off operation is decomposed into an orderly gradient unloading process, which effectively mitigates the instantaneous impact on the power grid caused by the synchronous power-off of large-scale equipment. At the same time, it realizes that the pulsed power components are de-energized before the power distribution modules, reducing the electrical stress of circuit breaker disconnection under load, and improving the overall system safety and grid friendliness.

[0056] Example 2 Please see Figure 2 This embodiment provides an emergency shutdown method for a widely spatially distributed pulsed power device, specifically including the following steps: Step S100: In response to the emergency stop trigger event, generate an emergency stop control signal.

[0057] Understandably, emergency stop trigger events can originate from a variety of sources. They can be manually triggered hard-wired signals (such as pressing a remote emergency stop button or a zone emergency stop button) or soft interlock signals automatically generated by an external control system based on real-time monitoring data (such as overcurrent, overvoltage, insulation faults, etc.). Regardless of the trigger source, the system uniformly converts it into a standardized emergency stop control signal as the reference input for subsequent processing. This unified signal generation mechanism ensures the determinism and consistency of the method execution and avoids discrepancies in response logic caused by differences in trigger sources.

[0058] Step S200: Distribute the emergency stop control signal to multiple local zones. Within each local zone, expand the received emergency stop control signal into a multi-zone emergency stop control signal and distribute it to each power distribution module and pulse power component within the local zone.

[0059] Understandably, the above steps describe the transmission and replication process of emergency stop commands over a wide spatial range. The emergency stop control signal is first distributed to k local partitions, and then expanded in two levels within each local partition to finally form a partitioned emergency stop control signal network covering all terminal nodes. Through this hierarchical distribution and expansion mechanism, synchronous addressing and command issuance to a massive number of terminal devices can be achieved without increasing the processing burden on the central node, thus resolving the contradiction between signal coverage and response speed in large-scale distributed systems.

[0060] Step S300: Control the time-sharing power outage between different local partitions, and / or between different device groups within the same local partition, and / or between different types of devices within the same device group, according to a preset delay sequence.

[0061] It is understandable that by transforming the originally instantaneous centralized power outage operation into an orderly time-sequenced control process, the dual goals of safety protection and power grid stability can be achieved. It should be understood that the above three control dimensions (interval, inter-group equipment within the same zone, and inter-type equipment within the same group) do not necessarily have to be executed simultaneously, but can be implemented individually or in any combination according to the actual operating conditions, thus providing extremely high strategic flexibility.

[0062] As a preferred implementation, step S300 specifically includes: controlling different local partitions to disconnect power in a time-sharing manner according to a first preset delay sequence, and / or controlling different types of terminal devices within the same local partition to disconnect power in a time-sharing manner according to a second preset delay sequence.

[0063] It should be noted that the first preset delay sequence and the second preset delay sequence are two independent sets of control parameters. The first preset delay sequence aims to stagger the load shedding actions of the k zones on the time axis to mitigate the instantaneous impact on the upstream power grid. The second preset delay sequence acts at the micro-device level and aims to coordinate the action sequence of loads and power switches within the same power supply circuit to protect switching devices from arc damage. The two differ significantly in terms of control object, delay magnitude, and physical purpose, but they can be superimposed in execution logic. For example, in a specific execution scenario, the system can first activate the emergency stop response of each zone in sequence according to the first preset delay sequence, and at the instant each zone is activated, its internal terminal devices then execute their respective power-off sequences according to the second preset delay sequence. This power-off matrix minimizes the power change rate per unit time while ensuring operational safety at the device level.

[0064] Furthermore, for time-sharing power-off control between different types of terminal devices within the same local partition, the control pulse power component performs a power-off operation without delay or after a first delay, and the control power distribution module performs a power-off operation after a second delay, the second delay being greater than the first delay, so that the pulse power component is powered off before the power distribution module.

[0065] It should be noted that when the emergency stop control signal arrives, the pulse power components (such as Marx generators, linear transformer drivers, and other energy storage and release units) immediately or within a very short first delay complete tripping or energy discharge, cutting off the load current path. The power distribution modules (such as main circuit breakers, contactors, and other power switches) only perform the disconnection operation after a relatively long second delay. The difference Δt between the second delay and the first delay is usually set to be greater than 20ms, which is equivalent to more than one complete cycle of 50Hz AC power. Setting this time difference can ensure that when the main contacts of the power distribution module are separated, the load-side current has dropped to zero or a safe level, thereby avoiding the strong arcing of the contacts caused by load-bearing disconnection, extending the life of the switching equipment, and suppressing the secondary impact on the power grid caused by current-cutting overvoltage.

[0066] It is understandable that the specific values ​​of the first delay and the second delay are not fixed, but can be dynamically configured according to the inherent opening time of the circuit breaker, the energy discharge characteristics of the load, and the withstand capability of the power grid, as long as the timing constraint of the load disconnecting first and the power supply disconnecting later is met. Through the above-mentioned multi-dimensional timing coordinated control, the method of this application effectively resolves the safety risks and power quality problems faced during the emergency shutdown of large-scale pulse power devices while ensuring the rapid emergency stop response.

[0067] The working principle of this embodiment will be explained in detail below using a typical emergency shutdown scenario of a large-scale laser driving device with widely distributed pulsed power as an example: In this application scenario, the large laser driving device is set to include 10 local partitions, each of which is divided into 5 functional sub-partitions. Each functional sub-partition is equipped with 1 set of power distribution module and 20 sets of pulse power components. Based on this calculation, the entire device contains a total of 1050 emergency stop terminal nodes that need to be controlled independently. These nodes are distributed in a wide area in a ring or straight line in physical space, with a span of hundreds of meters or even further. During normal operation of the device, the remote centralized emergency stop control module 100 continuously sends a 10kHz frequency pulse optical signal with a duty cycle of 25% to 10 local zones. After receiving the signal, each local zone emergency stop control module 200 performs lossless copying through two-stage optical expansion units and distributes it to its five subordinate functional sub-zones. Ultimately, all 21 terminal emergency stop control modules 300 in each functional sub-zone can detect optical signals that meet preset characteristics in real time, thereby maintaining the closed power supply circuit of the back-end power distribution module and pulse power component. This normal-state high-repetition-rate optical signal not only achieves fault safety monitoring, but also effectively extends the service life of optical transmitting devices by reducing the average conduction time.

[0068] When the operator presses the remote emergency stop button or the external monitoring system detects a serious fault such as insulation breakdown, the emergency stop trigger event is responded to immediately. The remote centralized emergency stop control module 100 immediately stops outputting the repetitive pulse optical signal and applies an incremental delay to each output according to the preset first preset delay sequence. In this scenario, the interval delay step ΔT is set to 50ms. Therefore, the first local partition loses optical signal input at 0ms, and all terminal emergency stop control modules 300 within it determine an emergency stop state because they cannot detect effective signal characteristics. The second local partition loses optical signal input at 5ms. The first local partition responds at 0ms, the third responds at 100ms, and so on, until the tenth local partition completes its response at 450ms. Through this time-sharing power outage strategy, the process of 1050 devices losing power simultaneously, which might have occurred at the same instant, is orderly distributed over a 450ms time window. From the perspective of grid interaction, this is equivalent to reducing the peak instantaneous power drop by about an order of magnitude, effectively avoiding drastic fluctuations in bus voltage or malfunctions of upstream protection devices caused by sudden load changes, and significantly improving the compatibility between the device and the grid.

[0069] Within each local partition, the power-off operation of the terminal equipment further follows a second preset delay sequence to ensure equipment safety. Specifically, when the terminal emergency stop control module 300 in a certain functional sub-partition determines that it has entered an emergency stop state, the terminal module connected to the 20 sets of pulse power components immediately outputs a drive signal to activate the tripping mechanism of the corresponding component and cut off the load-side energy storage release circuit. The terminal module connected to the power distribution module of the same sub-partition outputs a drive signal after a second delay of 30ms to disconnect the main power circuit breaker. The 30ms delay interval set here is greater than a complete cycle of 50Hz AC power, which is sufficient to ensure that the load current on the pulse power component side has dropped to zero or a safe level before the main contacts of the power distribution module separate. This timing coordination of load priority over power disconnection avoids the phenomenon of load-bearing circuit breaker tripping, avoids the burning damage of the circuit breaker contacts by strong arcs, and also suppresses the secondary impact of the operating overvoltage caused by current throttling on sensitive electronic equipment.

[0070] In summary, in the application scenario of this large-scale laser driving device, this embodiment achieves reliable coverage of thousands of nodes through a three-level fiber optic architecture, balances safety and device lifespan through a repetitive optical signal mechanism, and achieves effective mitigation of grid impact and precise protection of switching equipment through a dual time-sharing power-off strategy within and between zones, ensuring rapid emergency stop response. It should be emphasized that the 10 zones, 50ms inter-zone delay, 30ms intra-zone delay, and 10kHz / 25% signal parameters mentioned in the above embodiment are all exemplary values. In actual engineering, if the grid capacity connected to the device is small, the inter-zone delay step ΔT can be adjusted to 100ms or more to further reduce the impact intensity; if the energy dissipation time of the pulse power component is long, the second delay within the zone can be extended to 50ms or 80ms accordingly; if the device scale is expanded to tens of thousands of nodes, the number of local zones k can be increased or the sub-zone structures m and n can be adjusted, as long as the hierarchical expansion architecture, fault-safe signal detection principle, and multi-dimensional timing collaborative control concept disclosed in this application are followed.

[0071] Example 3 In a preferred embodiment, this application also provides an electronic device, the electronic device comprising: The computer device includes a memory and a processor, wherein the memory stores computer-readable instructions that, when executed by the processor, implement the described emergency shutdown method for a widely spatially distributed pulsed power device. The computer device can be broadly categorized as a server, terminal, or any other electronic device with the necessary computing and / or processing capabilities. In one embodiment, the computer device may include a processor, memory, network interface, communication interface, etc., connected via a system bus. The processor of the computer device can be used to provide the necessary computing, processing, and / or control capabilities. The memory of the computer device may include a non-volatile storage medium and internal memory. The non-volatile storage medium may store an operating system, computer programs, etc. The internal memory can provide an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The network interface and communication interface of the computer device can be used to connect and communicate with external devices via a network. When the computer program is executed by the processor, it performs the steps of the method of the present invention.

[0072] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0073] The technical features described above can be combined arbitrarily. Although not all possible combinations of these technical features are described, any combination of these technical features should be considered to be covered by this specification, provided that such combination does not contain contradictions.

[0074] The specific embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made in accordance with the technical concept of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. An emergency shutdown system for a widely spatially distributed pulsed power device, characterized in that, include: The remote centralized emergency stop control module (100) is used to respond to emergency stop triggering events and generate and output multiple emergency stop control signals; Local partition emergency stop control modules (200) are respectively set in different local partitions. Each local partition emergency stop control module (200) is connected to the remote centralized emergency stop control module (100) through an optical fiber. It is used to receive one emergency stop control signal and expand it into multiple partition emergency stop control signals. Terminal emergency stop control module (300) is installed in the power distribution module and pulse power component in each local partition. Each terminal emergency stop control module (300) is connected to the local partition emergency stop control module (200) of its local partition through optical fiber. It is used to receive one partition emergency stop control signal and control the power outage of the power distribution module or pulse power component in which it is located. Both the emergency stop control signal and the partition emergency stop control signal are optical signals; The terminal emergency stop control module (300) is configured as follows: The optical signal is continuously received, and the frequency and / or duty cycle of the optical signal are detected. When the detected frequency and / or duty cycle remain within the preset range, control the device to maintain power supply; When the optical signal is interrupted, or the detected frequency and / or duty cycle exceeds the preset range, a power-off operation is performed; The optical signals output by the remote centralized emergency stop control module (100) and the local partition emergency stop control module (200) are, under normal conditions, high-repetition-rate pulse optical signals with a preset duty cycle and a preset frequency.

2. The emergency shutdown system for a widely spatially distributed pulsed power device according to claim 1, characterized in that, The remote centralized emergency stop control module (100) expands the generated emergency stop control signal into k channels and outputs them to k local partition emergency stop control modules (200) respectively. Each of the local partition emergency stop control modules (200) includes a first-level optical signal expansion unit and a second-level optical signal expansion unit. The first-level optical signal expansion unit is used to expand the received emergency stop control signal into m signals and output them to m second-level optical signal expansion units. Each second-level optical signal expansion unit is used to expand the received signal into n+1 signals to correspond to n sets of pulse power components and 1 set of power distribution modules in a functional sub-partition.

3. The emergency shutdown system for a widely spatially distributed pulsed power device according to claim 1, characterized in that, The remote centralized emergency stop control module (100) includes a delay unit, which is used to set an incremental delay sequence for emergency stop control signals output to different local partitions, so as to perform time-sharing power outages on different local partitions.

4. The emergency shutdown system for a widely spatially distributed pulsed power device according to claim 1, characterized in that, The terminal emergency stop control module (300) located in the pulse power component is configured to perform a power-off operation without delay or after a first delay in response to a zone emergency stop control signal. The terminal emergency stop control module (300) installed in the power distribution module is configured to perform a power-off operation after a second delay in response to the same zone emergency stop control signal. The second delay is greater than the first delay, so that the pulse power components in the same functional sub-zone are de-energized before the power distribution module.

5. The emergency shutdown system for a widely spatially distributed pulsed power device according to claim 1, characterized in that, The terminal emergency stop control module (300) includes: A photoelectric conversion circuit is used to convert received optical signals into electrical signals; The signal detection and delay control circuit is used to detect the frequency and / or duty cycle characteristics of the electrical signal to determine whether it is an emergency stop state, and outputs a drive signal after a preset delay when it is determined to be an emergency stop state. The relay, driven by the drive signal, disconnects the main circuit of the device in which it resides.

6. An emergency shutdown method for a widely spatially distributed pulsed power device, characterized in that, The method, applied to the wide spatially distributed pulsed power device emergency shutdown system as described in any one of claims 1 to 5, comprises: S100, in response to an emergency stop triggering event, generates an emergency stop control signal; S200. Distribute the emergency stop control signal to multiple local partitions. Within each local partition, expand the received emergency stop control signal into a multi-partition emergency stop control signal and distribute it to each power distribution module and pulse power component within the local partition. S300 controls different local partitions, and / or different device groups within the same local partition, and / or different types of devices within the same device group to perform time-sharing power outages according to a preset delay sequence.

7. The emergency shutdown method for a widely spatially distributed pulsed power device according to claim 6, characterized in that, The method for controlling time-sharing power outages between different local partitions, and / or between different device groups within the same local partition, and / or between different types of devices within the same device group, according to a preset delay sequence, includes: Control different local partitions to cut off power in a time-sharing manner according to a first preset delay sequence, and / or control different types of terminal devices within the same local partition to cut off power in a time-sharing manner according to a second preset delay sequence.

8. The emergency shutdown method for a widely spatially distributed pulsed power device according to claim 7, characterized in that, The method for controlling different types of terminal devices within the same local partition to disconnect power in a time-sharing manner according to a second preset delay sequence includes: The control pulse power component performs a power-off operation without delay or after a first delay, and the control power distribution module performs a power-off operation after a second delay, wherein the second delay is greater than the first delay, so that the pulse power component is powered off before the power distribution module.

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