Intelligent fast emergency power supply system for monitoring high-voltage short-circuit fault based on symbolic method

An intelligent fast emergency power supply system that monitors high-voltage short-circuit faults through symbolic methods uses a monitoring module to capture characteristic information and quickly switch power supply modes, solving the problem of uninterrupted power supply in the existing technology, achieving uninterrupted power supply under high-voltage short-circuit faults, and improving power supply safety and reliability.

CN120237788BActive Publication Date: 2025-10-21GUOBIAO POWER SUPPLY GROUP
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Patent Information

Application Number
CN202510622778.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-05-15
Publication Date
2025-10-21
Estimated Expiration
2045-05-15

AI Technical Summary

Technical Problem

The existing uninterruptible power supply system cannot completely solve the problem of uninterrupted power supply, and has the disadvantages and hidden dangers of semiconductor thermal online conversion.

Method used

An intelligent fast emergency power supply system based on symbolic method is used to monitor high-voltage short-circuit faults. The monitoring module captures the characteristic information of the high-voltage grid short circuit at the moment, and switches the power supply mode within 0.01 milliseconds, including mains power supply mode, emergency power supply mode and energy storage power supply mode, to ensure uninterrupted power supply.

Benefits of technology

It achieves rapid switching of power supply modes in the event of a high-voltage short-circuit fault, ensures uninterrupted power supply to the power load, improves power supply safety and reliability, and avoids semiconductor thermal online conversion.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses an intelligent rapid emergency power supply system based on symbolic method for monitoring high-voltage short-circuit fault, and relates to the technical field of power supply.The system comprises a power supply module, a monitoring module located at the input end of the power supply module and a control module connected with the power supply module and the monitoring module respectively, the power supply module comprises a mains direct transmission unit, an abnormal emergency unit and an energy storage unit which are connected in parallel with each other, and the monitoring module comprises a first intelligent unit arranged on an A-phase power line, a second intelligent unit arranged on a B-phase power line and a third intelligent unit arranged on a C-phase power line; the monitoring module can capture characteristic information on the power lines of each phase at the moment of short-circuit instant of a high-voltage power grid, and the control module can switch the power supply mode of the output end of the power supply module according to the characteristic information, the switching time is less than 0.01 millisecond, and the power supply mode comprises a mains power supply mode, an emergency power supply mode and an energy storage power supply mode. By adopting the system, uninterrupted power supply can be ensured, and the safety and reliability are improved.
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Description

Technical Field

[0001] The present application relates to the field of power supply technology, and in particular to an intelligent fast emergency power supply system for monitoring high-voltage short-circuit faults based on a symbolic method. Background Art

[0002] Today, the resilience of most critical loads to grid interference has significantly improved, and their specific requirements for frequency and voltage stabilization no longer exist. Furthermore, current power supply network parameters exceed the requirements of critical loads, enabling direct power supply. Therefore, for most critical loads on power supply networks below 10 kV, uninterrupted or uninterrupted power supply is a crucial requirement.

[0003] However, the commonly used uninterruptible power supply (UPS) in the market adopts the "rectification → inversion → filtering → thyristor" transmission mode, which fails to completely solve the problem of uninterrupted power supply and still has disadvantages and hidden dangers such as semiconductor thermal wiring. Summary of the Invention

[0004] In view of the above-mentioned defects or deficiencies in the related art, it is desired to provide an intelligent fast emergency power supply system based on symbolic method for monitoring high-voltage short-circuit faults, which can ensure uninterrupted power supply and improve safety and reliability.

[0005] The present application provides an intelligent fast emergency power supply system for monitoring high-voltage short-circuit faults based on a symbolic method. The intelligent fast emergency power supply system includes a power supply module, a monitoring module located at the input end of the power supply module, and a control module connected to the power supply module and the monitoring module respectively. The power supply module includes a mains direct transmission unit, an abnormal emergency unit, and an energy storage unit connected in parallel. The monitoring module includes a first intelligent unit provided on the A-phase power line, a second intelligent unit on the B-phase power line, and a third intelligent unit on the C-phase power line.

[0006] The monitoring module is configured to capture characteristic information that appears on each phase power line at the moment of high-voltage power grid short circuit, and the control module is configured to switch the power supply mode of the output end of the power supply module according to the characteristic information. The switching time is less than 0.01 milliseconds. The power supply mode includes mains power supply mode, emergency power supply mode and energy storage power supply mode.

[0007] Optionally, in some embodiments of the present application, the attributes of the characteristic information include at least one of current variation, voltage variation, harmonic mutation and impedance mutation.

[0008] Optionally, in some embodiments of the present application, the control module is specifically used to switch the mains power supply mode to the emergency power supply mode in response to the instant of receiving the characteristic information, and to switch the emergency power supply mode to the energy storage power supply mode when the duration or parameter value of the characteristic information reaches a preset threshold, wherein if the mains power returns to normal during the emergency power supply mode or the energy storage power supply mode, the current power supply mode is switched to the mains power supply mode.

[0009] Optionally, in some embodiments of the present application, the abnormal emergency unit includes an anti-shock rectifier, an enhanced inverter and a filter connected in series in sequence.

[0010] Optionally, in some embodiments of the present application, the power supply module further includes a channel conversion unit, which is respectively connected to the AC direct transmission unit, the abnormal emergency unit, the energy storage unit and the control module, and the channel conversion unit is configured to convert between the channel corresponding to the AC power supply mode, the channel corresponding to the emergency power supply mode and the channel corresponding to the energy storage power supply mode based on the control instructions of the control module.

[0011] Optionally, in some embodiments of the present application, the channel conversion unit includes a first compound switch and a second compound switch connected in series in sequence, the first compound switch includes a first contact switch and a first contactless switch, the second compound switch includes a second contact switch and a second contactless switch, the first end of the first contact switch is respectively connected to the first end of the AC direct transmission unit and the first end of the first contactless switch, the second end of the first contact switch is respectively connected to the second end of the first contactless switch and the second end of the second contactless switch, the first end of the second contact switch is respectively connected to the first end of the abnormal emergency unit and the first end of the second contactless switch, and the second end of the second contact switch is connected to the second end of the second contactless switch;

[0012] The first end of the energy storage unit is connected to the second end of the abnormal emergency unit, and the second end of the energy storage unit is connected to the third end of the abnormal emergency unit; the control module is respectively connected to the third end of the first contact switch, the third end of the first contactless switch, the third end of the second contactless switch, and the third end of the second contactless switch.

[0013] Optionally, in some embodiments of the present application, the first contact switch and the second contact switch are electromechanical switches, and the first contactless switch and the second contactless switch are semiconductor power switches.

[0014] Optionally, in some embodiments of the present application, the electromechanical switch includes a contactor, a relay, or an electric load switch.

[0015] Optionally, in some embodiments of the present application, the semiconductor power switch includes a metal oxide semiconductor device, an insulated gate bipolar transistor, an intelligent power module, an integrated gate commutated thyristor, or an electron injection enhanced gate transistor.

[0016] Optionally, in some embodiments of the present application, the intelligent fast emergency power supply system also includes a detection module, which is respectively connected to the power supply module and the control module, and the detection module is configured to detect the operating parameters of the power supply module and send the operating parameters to the control module.

[0017] The present application provides an intelligent fast emergency power supply system for monitoring high-voltage short-circuit faults based on the symbolic method. The intelligent unit of each phase power line is used to capture the characteristic information that suddenly appears when the high-voltage power grid is short-circuited. That is to say, by taking advantage of the characteristic information not being constrained by the transition process, the risk of high-voltage power grid short-circuit power outage can be judged in advance. Then, according to the characteristic information, the power supply mode can be quickly switched between the mains power supply mode, the emergency power supply mode and the energy storage power supply mode. The switching time is less than 0.01 milliseconds, ensuring uninterrupted power supply to the power load. At the same time, there is no need for semiconductor thermal online conversion, which greatly improves the power supply safety and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 A structural block diagram of an intelligent fast emergency power supply system for monitoring high-voltage short-circuit faults based on a symbolic method provided in an embodiment of the present application;

[0020] Figure 2 A schematic diagram of short-circuit faults at different electrical locations in a high-voltage power grid provided in an embodiment of the present application;

[0021] Figure 3 This is a specific example of an intelligent fast emergency power supply system for monitoring high-voltage short-circuit faults based on the symbolic method provided in an embodiment of the present application.

[0022] Reference numerals:

[0023] 10 - Intelligent fast emergency power supply system for monitoring high-voltage short-circuit faults based on symbolic method, 101 - Power supply module, 1011 - Mains direct transmission unit, 1012 - Abnormal emergency unit, 1013 - Energy storage unit, 1014 - Channel conversion unit, 102 - Monitoring module, 1021 - First intelligence unit, 1022 - Second intelligence unit, 1023 - Third intelligence unit, 103 - Control module, 104 - Detection module; K01 - Incoming switch, X1, X2, X3 - Intelligence units, IA, IA1, IA2, IA3 - Intelligent instruments, S1 - Ordinary switch, S2 - Output switch, ICS1 - First composite switch, ICS2 - Second composite switch, RU - Shock-resistant rectifier, ELn - Enhanced inverter, LC - Filter, Q1 - First contact switch, I1 - First contactless switch, Q2 - Second contact switch, I2 - Second contactless switch. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0025] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0026] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other. Figures 1 to 3 The intelligent fast emergency power supply system for monitoring high-voltage short-circuit faults based on the symbolic method provided in the embodiments of the present application is described in detail.

[0027] Please refer to Figure 1, which is a block diagram of the structure of an intelligent fast emergency power supply system for monitoring high-voltage short-circuit faults based on the symbolic method provided in an embodiment of the present application. The intelligent fast emergency power supply system 10 for monitoring high-voltage short-circuit faults based on the symbolic method includes a power supply module 101, a monitoring module 102 located at the input end of the power supply module 101, and a control module 103 connected to the power supply module 101 and the monitoring module 102, respectively. The power supply module 101 includes a mains direct transmission unit 1011, an abnormal emergency unit 1012, and an energy storage unit 1013 connected in parallel. The monitoring module 102 includes a first intelligent unit 1021 provided on the A-phase power line, a second intelligent unit 1022 on the B-phase power line, and a third intelligent unit 1023 on the C-phase power line. The monitoring module 102 is capable of capturing characteristic information that appears on each phase power line at the moment of a high-voltage grid short circuit. The control module 103 is capable of switching the power supply mode at the output end of the power supply module 101 based on this characteristic information. The switching time is less than 0.01 millisecond. The power supply modes include, but are not limited to, mains power supply mode, emergency power supply mode, and energy storage power supply mode.

[0028] It should be noted that if Figure 2 As shown, when a short circuit occurs in the high-voltage power grid and causes the proximal upper-level circuit breaker to trip and protect the power supply, since the circuit breaker (DL) and the ~380V / 220V distribution network (hereinafter referred to as the "terminal network") where the Intelligent Swift Emergency Power System (ISPS) is located are separated by one or more transformers and power supply lines of different voltage levels, it takes hundreds of milliseconds for the severe parameter abnormality information caused by the tripping moment to be transmitted from the transformer and power supply line to the terminal network. By the time the severe parameter abnormality information appears in the terminal network, the supply voltage has dropped below 85%. For important power loads, the power supply has objectively begun to be interrupted (that is, the voltage no longer meets normal operating requirements), which is the physical end stage of the power outage. It is difficult to ensure that the switching time of the system output end is less than 10 milliseconds.

[0029] At the moment a short circuit occurs in the high-voltage power grid, the operating parameters of the power grid will mutate and vary due to the strong short-circuit power and electromagnetic field power. Physically, there will be many mutation and variation information that are not constrained by the transition process. Therefore, the intelligent fast emergency power supply system 10 based on the symbolic method for monitoring high-voltage short circuit faults in the embodiment of the present application can use the intelligent units of each phase power line to capture the characteristic information that suddenly appears at the moment of the high-voltage power grid short circuit, judge the risk of high-voltage power grid short circuit power outage hundreds of milliseconds in advance, and switch the power supply mode within less than 0.01 milliseconds based on the characteristic information to ensure uninterrupted power supply to the power load. For example, the characteristic information attributes captured by the first intelligent unit 1021, the second intelligent unit 1022, and the third intelligent unit 1023 include at least one of current variation, voltage variation, harmonic mutation, and impedance mutation. The attributes of the characteristic information captured by each intelligent unit can be the same or different. Since the signal characteristics of any type of short-circuit fault on each phase power line are not exactly the same, and even the individual characteristics of the same type of short-circuit fault on the same phase power line are different, the characteristic information is an information family. If one of phases A, B, and C exhibits characteristic information, and any one or two of the other two phases also exhibit characteristic information, it indicates that a short-circuit fault has occurred in the high-voltage power grid. The characteristic information can be used as a basis for switching the power supply mode.

[0030] For another example, in the intelligent fast emergency power supply system 10 that monitors high-voltage short-circuit faults based on the symbolic method, the power supply module 101 operates in the mains power supply mode under normal mains power conditions, and the control module 103 responds to the instantaneous receipt of characteristic information and seamlessly switches the mains power supply mode to the emergency power supply mode. When the duration of the characteristic information or the parameter value reaches a preset threshold, the emergency power supply mode is seamlessly switched to the energy storage power supply mode. If the mains power returns to normal during the emergency power supply mode or the energy storage power supply mode, the current power supply mode is seamlessly switched to the mains power supply mode. The advantage of such a setting is that when special factors cause the mains power to be transiently abnormal (fluctuating or transient), the intelligent fast emergency power supply system 10 that monitors high-voltage short-circuit faults based on the symbolic method can automatically maintain the abnormal emergency output state, and seamlessly switch back to the mains power supply mode if the transient abnormality ends. If the transient abnormality persists and the mains power is cut off, it seamlessly switches to the energy storage power supply mode, thereby ensuring that the power load is always in a safe and stable power-receiving state.

[0031] For example, the following is combined Figure 3The figure shows a detailed description of the structure of the intelligent fast emergency power supply system 10 for monitoring high-voltage short-circuit faults based on the symbolic method in an embodiment of the present application. For example, the mains power direct transmission unit 1011 includes a conventional switch S1 and a transmission conductor. In the mains power supply mode, the mains power is introduced through the incoming switch K01 and then supplied to the load through the conventional switch S1, the first composite switch ICS1 in the channel conversion unit 1014, and the output switch S2. For another example, the abnormal emergency unit 1012 includes a surge-resistant rectifier RU, an enhanced inverter ELn, and a filter LC connected in series. The surge-resistant rectifier RU is suitable for operating conditions with surge currents. When surge currents are not present, the surge-resistant rectifier RU can also be a conventional rectifier. The enhanced inverter ELn is suitable for operating conditions where the load power at the time of inversion is greater than the normal power. When the load does not increase during an emergency, the enhanced inverter ELn can also be a conventional inverter. Furthermore, in emergency power supply mode, after the mains power is introduced through the incoming switch K01, it is supplied to the load through the surge-resistant rectifier RU, the enhanced inverter ELn, the filter LC, the second composite switch ICS2 within the channel conversion unit 1014, and the output switch S2. During the period when the characteristic information emerges, a stable power supply is provided to the load in an "AC-DC-AC" mode. For example, the energy storage unit 1013 can be a smart battery that integrates intelligent charging and linkage, battery pack monitoring and online protection, and negative pulse maintenance and signal linkage. It can also be a lead-acid battery pack or a lithium-ion battery pack.

[0032] For another example, the channel conversion unit 1014 is connected to the mains direct transmission unit 1011, the abnormal emergency unit 1012, the energy storage unit 1013, and the control module 103, respectively. The channel conversion unit 1014 can switch between the channel corresponding to the mains power supply mode, the channel corresponding to the emergency power supply mode, and the channel corresponding to the energy storage power supply mode based on the control instructions of the control module 103. For example, the channel conversion unit 1014 includes, but is not limited to, a first composite switch ICS1 and a second composite switch ICS2 connected in series. The first composite switch ICS1 can provide a channel for the mains power supply mode, including a first contact switch Q1 (continuous current-carrying switch) and a first non-contact switch I1 (transition instantaneous current-carrying switch). The second composite switch ICS2 can provide channels for the emergency power supply mode and the energy storage power supply mode, including a second contact switch Q2 (continuous current-carrying switch) and a second non-contact switch I2 (transition instantaneous current-carrying switch). Furthermore, the first end of the first contact switch Q1 is connected to the first end of the AC power direct transmission unit 1011 and the first end of the first contactless switch I1, respectively. The second end of the first contact switch Q1 is connected to the second end of the first contactless switch I1 and the second end of the second contactless switch Q2, respectively. The first end of the second contact switch Q2 is connected to the first end of the abnormal emergency unit 1012 and the first end of the second contactless switch I2, respectively. The second end of the second contact switch Q2 is connected to the second end of the second contactless switch I2. Furthermore, the first end of the energy storage unit 1013 is connected to the second end of the abnormal emergency unit 1012, and the second end of the energy storage unit 1013 is connected to the third end of the abnormal emergency unit 1012. The control module 103 is connected to the third end of the first contact switch Q1, the third end of the first contactless switch I1, the third end of the second contactless switch Q2, and the third end of the second contactless switch I2, respectively. For another example, the first contact switch Q1 and the second contact switch Q2 are electromechanical switches, which include but are not limited to contactors, relays and electric load switches; the first contactless switch I1 and the second contactless switch I2 are semiconductor power switches, which include but are not limited to MOS (Metal Oxide Semiconductor) devices, IGBT (Insulated Gate Bipolar Transistor), IPM (Intelligent Power Module), IGCT (Integrated Gate Commutated Thyristor), IEBT (Injection Enhanced Gate Transistor), gallium nitride power semiconductor devices and silicon carbide power semiconductor devices, etc.

[0033] For another example, the first intelligent unit 1021 is X1, the second intelligent unit 1022 is X2, and the third intelligent unit 1023 is X3. X1, X2, and X3 refer to devices embedded with software and having processing, calculation, and editing functions, including but not limited to inductive power electronic chips, modules, and monitoring instruments. The output signal can be set and edited by software to a 4-20 mA dynamic current signal or a 1-5 V dynamic voltage signal, or can be directly converted into a signal level for requesting an interruption to the control module 103. The installation location can be the mains direct transmission branch in the system cabinet or any location close to the power line on the mains incoming line side (not directly connected to the power line). For example, the control module 103 can control the orderly operation of all components, modules and units, monitor the information of all intelligent units and smart meters, and switch the power supply mode according to the characteristic information from X1~X3 or the serious abnormal parameter information from IA1~IA3. It includes but is not limited to single-chip microcomputers, microcomputers, industrial computers, programmable controllers, logic control modules with analysis, calculation and judgment functions, and smart meters with embedded computer chips, etc. The control signal lines connect all instruments, intelligent units, controlled contact and contactless switches, controlled units and related components or modules inside the smart battery.

[0034] For another example, the detection module 104 of the intelligent rapid emergency power supply system 10 for monitoring high-voltage short-circuit faults based on the symbolic method is connected to the power supply module 101 and the control module 103, respectively. The detection module 104 can detect the operating parameters of the power supply module 101 and send the operating parameters to the control module 103. For example, the detection module 104 includes intelligent meters IA, IA1, IA2, and IA3, which can be DDC-III or DDC-IV type automation meters or other types of modern intelligent meters. Furthermore, the IA can monitor normal operating parameters such as current, voltage, active power, reactive power, power factor, and battery voltage. IA1 can capture severe parameter anomalies before a fault power outage, with its signal sampling point located anywhere on the power supply input or the mains direct transmission branch. IA2 can monitor inverter output parameters, with its signal sampling point located on the output side of the enhanced inverter ELn. The primary and secondary wiring methods are subject to the product specifications. And, IA3 can capture severe parameter anomalies before a fault power outage, with its signal sampling point located anywhere between the channel conversion unit 1014 and the output switch S2. The display panels for the IA and IA2 are located on the system cabinet, with the primary monitoring components located within the system cabinet. IA1 and IA3 contain only the primary monitoring components within the cabinet and do not require a display panel. The primary and secondary wiring connections for all intelligent meters can be made using conventional industry wiring methods or in accordance with the product specifications.

[0035] The intelligent fast emergency power supply system provided by the present application is based on the symbolic method to monitor high-voltage short-circuit faults. It captures the characteristic information of the high-voltage power grid short circuit that suddenly appears through the intelligent unit of each phase power line. That is to say, by taking advantage of the characteristic information not being constrained by the transition process, it can judge the risk of high-voltage power grid short circuit power outage in advance, and then quickly switch the power supply mode between the mains power supply mode, emergency power supply mode and energy storage power supply mode according to the characteristic information. The switching time is less than 0.01 milliseconds, ensuring uninterrupted power supply to the power load. At the same time, there is no need for semiconductor thermal online conversion, which greatly improves the power supply safety and reliability.

[0036] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0037] This document uses specific examples to illustrate the principles and implementation methods of this application. The description of the above examples is only intended to help understand the method and core concept of this application. At the same time, for those skilled in the art, based on the concept of this application, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting this application.

Claims

1. An intelligent fast emergency power supply system for monitoring high voltage short circuit faults based on symbolic method, characterized in that: The intelligent fast emergency power supply system includes a power supply module, a monitoring module located at the input end of the power supply module, and a control module connected to the power supply module and the monitoring module respectively. The power supply module includes a mains direct transmission unit, an abnormal emergency unit, and an energy storage unit connected in parallel. The monitoring module includes a first intelligence unit provided on the A-phase power line, a second intelligence unit on the B-phase power line, and a third intelligence unit on the C-phase power line. The first intelligence unit, the second intelligence unit, and the third intelligence unit are inductive power electronic chips or monitoring instruments, and the output signal is any one of a 4-20mA dynamic current signal, a 1-5V dynamic voltage signal, and a signal level for requesting an interruption to the control module. The monitoring module is configured to capture characteristic information that appears on each phase power line at the moment of a high-voltage power grid short circuit. The characteristic information is a family of information. If one of phases A, B, and C displays the characteristic information, and any one or two of the other two phases also display the characteristic information, it indicates that a short circuit fault has occurred in the high-voltage power grid. The characteristic information can be used as a basis for switching the power supply mode. The attributes of the characteristic information include at least one of current variation, voltage variation, harmonic mutation, and impedance mutation. The control module is configured to switch the power supply mode of the output end of the power supply module according to the characteristic information. The switching time is less than 0.01 millisecond. The power supply modes include mains power supply mode, emergency power supply mode, and energy storage power supply mode. Among them, the control module is specifically used to respond to the moment of receiving the characteristic information, switch the mains power supply mode to the emergency power supply mode, and when the duration of the characteristic information or the parameter value reaches a preset threshold, switch the emergency power supply mode to the energy storage power supply mode. If the mains power returns to normal during the emergency power supply mode or the energy storage power supply mode, the current power supply mode is switched to the mains power supply mode, and in the emergency power supply mode, the mains power is introduced through the incoming switch and then supplies power to the power load through the impact-resistant rectifier, enhanced inverter and filter connected in series in the abnormal emergency unit.

2. The intelligent fast emergency power supply system according to claim 1, characterized in that: The power supply module also includes a channel conversion unit, which is respectively connected to the AC direct transmission unit, the abnormal emergency unit, the energy storage unit and the control module. The channel conversion unit is configured to convert between the channel corresponding to the AC power supply mode, the channel corresponding to the emergency power supply mode and the channel corresponding to the energy storage power supply mode based on the control instructions of the control module.

3. The intelligent fast emergency power supply system according to claim 2, characterized in that: The channel conversion unit includes a first composite switch and a second composite switch connected in series in sequence, the first composite switch includes a first contact switch and a first contactless switch, the second composite switch includes a second contact switch and a second contactless switch, the first end of the first contact switch is respectively connected to the first end of the AC direct transmission unit and the first end of the first contactless switch, the second end of the first contact switch is respectively connected to the second end of the first contactless switch and the second end of the second contactless switch, the first end of the second contact switch is respectively connected to the first end of the abnormal emergency unit and the first end of the second contactless switch, and the second end of the second contact switch is connected to the second end of the second contactless switch; The first end of the energy storage unit is connected to the second end of the abnormal emergency unit, and the second end of the energy storage unit is connected to the third end of the abnormal emergency unit; the control module is respectively connected to the third end of the first contact switch, the third end of the first contactless switch, the third end of the second contactless switch, and the third end of the second contactless switch.

4. The intelligent fast emergency power supply system according to claim 3, characterized in that: The first contact switch and the second contact switch are electromechanical switches, and the first contactless switch and the second contactless switch are semiconductor power switches.

5. The intelligent fast emergency power supply system according to claim 4, characterized in that: The electromechanical switch includes a contactor, a relay or an electric load switch.

6. The intelligent fast emergency power supply system according to claim 4, characterized in that: The semiconductor power switch includes a metal oxide semiconductor device, an insulated gate bipolar transistor, an intelligent power module, an integrated gate commutated thyristor or an electron injection enhanced gate transistor.

7. The intelligent fast emergency power supply system according to claim 1, characterized in that: The intelligent fast emergency power supply system also includes a detection module, which is connected to the power supply module and the control module respectively. The detection module is configured to detect the operating parameters of the power supply module and send the operating parameters to the control module.

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