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

Abstract

The invention discloses an intelligent rapid emergency power supply system for monitoring a high-voltage short-circuit fault based on a symbol method, 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, and the power supply module comprises a commercial power direct transmission unit, an abnormity emergency unit and an energy storage unit which are connected in parallel. The monitoring module comprises a first intelligent recognition unit arranged on an A-phase power line, a second intelligent recognition unit arranged on a B-phase power line and a third intelligent recognition unit arranged on a C-phase power line; the monitoring module can capture characteristic information which suddenly appears on each phase of power line at the short circuit moment of the high-voltage power grid, 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 commercial power supply mode, an emergency power supply mode and an energy storage power supply mode. By adopting the system provided by the invention, uninterrupted power supply can be ensured, and the safety and reliability are improved.

Description

Technical Field

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

[0002] Nowadays, the anti-power-grid interference capabilities of the vast majority of important electrical loads have been greatly improved, and their special requirements for power supply frequency stabilization and voltage regulation no longer exist. At the same time, the parameter indicators of the current power supply network are also higher than the requirement indicators of important electrical loads, and can directly supply power to important electrical loads. Therefore, for the vast majority of important electrical loads in the power supply network below ~10 kV, uninterrupted or non-interrupted power supply is an important requirement.

[0003] However, the uninterruptible power supply (UPS) commonly used in the market adopts a "rectification → inversion → filtering → thyristor" transfer mode, which fails to completely solve the problem of uninterrupted power supply, and there are also drawbacks and hidden dangers such as semiconductor heat online. Summary of the Invention

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

[0005] This 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 respectively connected to the power supply module and the monitoring module. The power supply module includes a mains direct transmission unit, an abnormal emergency unit, and an energy storage unit connected in parallel with each other. The monitoring module includes a first intelligent recognition unit arranged on the A-phase power line, a second intelligent recognition unit arranged on the B-phase power line, and a third intelligent recognition unit arranged on the C-phase power line; The monitoring module is configured to capture the characteristic information that suddenly appears on each phase power line at the moment of high-voltage power grid short circuit. The control module is configured to switch the power supply mode at the output end of the power supply module according to the characteristic information, and the switching time is less than 0.01 milliseconds. The power supply modes include a mains power supply mode, an emergency power supply mode, and an energy storage power supply mode.

[0006] Optionally, in some embodiments of this application, the attributes of the characteristic information include at least one of current variation, voltage variation, harmonic mutation, and impedance mutation.

[0007] Optionally, in some embodiments of the present application, the control module is specifically configured to, in response to receiving the feature information instantaneously, switch the mains power supply mode to the emergency power supply mode, and switch the emergency power supply mode to the energy storage power supply mode when the duration or parameter value of the feature information reaches a preset threshold. If the mains power supply resumes 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.

[0008] Optionally, in some embodiments of the present application, the abnormal emergency unit includes a shock-resistant rectifier, an enhanced inverter, and a filter connected in series in sequence.

[0009] Optionally, in some embodiments of the present application, the power supply module further includes a channel conversion unit. The channel conversion unit is respectively connected to the mains direct transmission unit, the abnormal emergency unit, the energy storage unit, and the control module. The channel conversion unit is configured to perform conversion among the channels corresponding to the mains power supply mode, the emergency power supply mode, and the energy storage power supply mode based on the control instruction of the control module.

[0010] Optionally, in some embodiments of the present application, 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 non-contact switch. The second composite switch includes a second contact switch and a second non-contact switch. The first end of the first contact switch is respectively connected to the first end of the mains direct transmission unit and the first end of the first non-contact switch. The second end of the first contact switch is respectively connected to the second end of the first non-contact switch and the second end of the second contact 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 non-contact switch. The second end of the second contact switch is connected to the second end of the second non-contact 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 non-contact switch, the third end of the second contact switch, and the third end of the second non-contact switch.

[0011] Optionally, in some embodiments of the present application, the first contact switch and the second contact switch are electromechanical switches, and the first non-contact switch and the second non-contact switch are semiconductor power switches.

[0012] Optionally, in some embodiments of the present application, the electromechanical switch includes a contactor, a relay, or an electric load switch.

[0013] Optionally, in some embodiments of the present application, the semiconductor power switch includes a metal-oxide semiconductor device, an insulated gate bipolar transistor, a smart power module, an integrated gate-commutated thyristor, or an electron injection enhanced gate transistor.

[0014] Optionally, in some embodiments of the present application, the intelligent fast emergency power supply system further includes a detection module, the detection module 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.

[0015] The present application provides an intelligent fast emergency power supply system for monitoring high-voltage short-circuit faults based on the symbol method. The characteristic information suddenly emerging at the moment of high-voltage grid short-circuit is captured by the intelligent recognition units of each phase of the power line. That is to say, by taking advantage of the fact that the characteristic information is not restricted by the transient process, the risk of high-voltage grid short-circuit power-off can be judged in advance. Furthermore, the power supply mode can be quickly switched among the mains power supply mode, the emergency power supply mode, and the energy storage power supply mode according to the characteristic information, and the switching time is less than 0.01 milliseconds, ensuring uninterrupted power supply to the electrical load. At the same time, semiconductor thermal on-line conversion is not required, greatly improving the power supply safety and reliability. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a structural block diagram of an intelligent fast emergency power supply system for monitoring high-voltage short-circuit faults provided by an embodiment of the present application; Figure 2 It is a schematic diagram of short-circuit faults at different electrical positions of a high-voltage grid provided by an embodiment of the present application; Figure 3 It is a specific example of an intelligent fast emergency power supply system for monitoring high-voltage short-circuit faults provided by an embodiment of the present application.

[0018] Reference Signs: 10 - Intelligent Fast Emergency Power Supply System for Monitoring High - Voltage Short - Circuit Faults Based on Symbolism 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 Line Switch, X1, X2, X3 - Intelligence Units, IA, IA1, IA2, IA3 - Intelligent Meters, S1 - Ordinary Switch, S2 - Output Switch, ICS1 - First Composite Switch, ICS2 - Second Composite Switch, RU - Impact - Resistant Rectifier, ELn - Enhanced Inverter, LC - Filter, Q1 - First Contact Switch, I1 - First Non - Contact Switch, Q2 - Second Contact Switch, I2 - Second Non - Contact Switch. Detailed Implementation Manner

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0020] To make the above - mentioned objects, features, and advantages of the present application more obvious and understandable, the present application will be further described in detail below with reference to the accompanying drawings and specific implementation manners.

[0021] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The following Figures 1 to 3 elaborates in detail the intelligent fast emergency power supply system for monitoring high - voltage short - circuit faults provided by the embodiments of the present application.

[0022] Please refer to Figure 1, which is a structural block diagram of an intelligent fast emergency power supply system for monitoring high-voltage short-circuit faults provided by an embodiment of the present application. The intelligent fast emergency power supply system 10 for monitoring high-voltage short-circuit faults based on the symbol 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 respectively connected to the power supply module 101 and the monitoring module 102. 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 with each other. The monitoring module 102 includes a first intelligent knowledge unit 1021 provided on the A-phase power line, a second intelligent knowledge unit 1022 provided on the B-phase power line, and a third intelligent knowledge unit 1023 provided on the C-phase power line. Among them, the monitoring module 102 can capture the characteristic information that suddenly appears on each phase power line at the moment of high-voltage grid short-circuit. The control module 103 can switch the power supply mode at the output end of the power supply module 101 according to the characteristic information, and the switching time is less than 0.01 milliseconds. The power supply mode includes but is not limited to the mains power supply mode, the emergency power supply mode, the energy storage power supply mode, etc.

[0023] It should be noted that as Figure 2 shown, when a short-circuit fault occurs in the high-voltage grid and causes the upstream breaker at the proximal end to trip and cut off the power supply, since there is one or more transformers and power supply lines with different voltage levels between the breaker (DL) and the ~380V / 220V distribution network (hereinafter referred to as the "terminal network") where the intelligent fast emergency power supply system (Intelligent Swift emergencyPower System, ISPS) is located, it takes hundreds of milliseconds for the severely abnormal parameter information caused by the tripping moment to be transmitted from the transformer and the power supply line to the terminal network. By the time the severely abnormal parameter information appears in the terminal network, the supply voltage has dropped below 85%. For important electrical loads, objectively, the power supply has already started to be interrupted (that is, the voltage no longer meets the normal working requirements), which belongs to the physical end stage of the power grid power outage. It is very difficult to ensure that the switching time at the output end of the system is less than 10 milliseconds.

[0024] At the moment when a short - circuit fault occurs in the high - voltage power grid, the operating parameters of the power grid will mutate and vary due to the powerful short - circuit power and electromagnetic - field power. Physically, there are many mutation and variation - type information that is not restricted by the transient process. Therefore, the intelligent fast emergency power supply system 10 for monitoring high - voltage short - circuit faults based on the symbol method in the embodiments of the present application can use the intelligent recognition units of each phase of the power line to capture the characteristic information that suddenly appears at the moment of high - voltage power - grid short - circuit, judge the risk of high - voltage power - grid short - circuit power - off hundreds of milliseconds in advance, and switch the power - supply mode within less than 0.01 milliseconds according to this characteristic information to ensure uninterrupted power supply to the electrical load. For example, the attribute of the characteristic information captured by the first intelligent recognition unit 1021, the second intelligent recognition unit 1022, and the third intelligent recognition unit 1023 includes at least one of current variation, voltage variation, harmonic mutation, and impedance mutation. The attributes of the characteristic information captured by each intelligent recognition unit can be the same or different. Since the signal characteristics that suddenly appear on each phase of the power line for any type of short - circuit fault are not the same, and even for the same type of short - circuit fault, its individual characteristics that suddenly appear on the same phase of the power line are also not the same, the characteristic information is an information family. And if characteristic information suddenly appears in one of the A - phase, B - phase, and C - phase, and characteristic information also suddenly appears in any one or both of the other two phases, it indicates that there is already a symbol of a short - circuit fault in the high - voltage power grid. The characteristic information can be used as the basis for switching the power - supply mode.

[0025] For another example, in the intelligent fast emergency power supply system 10 for monitoring high - voltage short - circuit faults based on the symbol method, the power - supply module 101 operates in the mains - power - supply mode under normal mains conditions. When the control module 103 responds instantaneously to receiving the characteristic information, it seamlessly switches the mains - power - supply mode to the emergency - power - supply mode, and when the duration or parameter value of the characteristic information reaches the preset threshold, it seamlessly switches the emergency - power - supply mode to the energy - storage - power - supply mode. Among them, 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 transient abnormalities (fluctuations or transients) in the mains power, the intelligent fast emergency power supply system 10 for monitoring high - voltage short - circuit faults based on the symbol method can automatically maintain the abnormal emergency output state. If the transient abnormality ends, it seamlessly switches back to the mains - power - supply mode. If the transient abnormality continues and the mains power is cut off, it seamlessly switches to the energy - storage - power - supply mode, thereby ensuring that the electrical load is always in a safe and stable power - receiving state.

[0026] Exemplarily, hereinafter in conjunction with Figure 3The composition structure of the intelligent fast emergency power supply system 10 for monitoring high-voltage short-circuit faults based on the symbol method in the embodiments of the present application is described in detail as follows. For example, the mains direct transmission unit 1011 includes a general switch S1 and transmission wires. In the mains power supply mode, after the mains power is introduced through the incoming line switch K01, it supplies power to the electrical load through the general switch S1, the first composite switch ICS1 in the channel conversion unit 1014, and the output switch S2. Another example is that the abnormal emergency unit 1012 includes a shock-resistant rectifier RU, an enhanced inverter ELn, and a filter LC connected in series in sequence. The shock-resistant rectifier RU is applicable to working conditions with impact current. When there is no impact current, the shock-resistant rectifier RU can also be an ordinary rectification device. The enhanced inverter ELn is applicable to working conditions where the load power at the moment of inversion is greater than the normal power. When the load does not increase during the emergency state, the enhanced inverter ELn can also be an ordinary inversion device. Further, in the emergency power supply mode, after the mains power is introduced through the incoming line switch K01, it supplies power to the electrical load through the shock-resistant rectifier RU, the enhanced inverter ELn, the filter LC, the second composite switch ICS2 in the channel conversion unit 1014, and the output switch S2, and provides a stable power supply to the electrical load in the "AC-DC-AC" mode during the sudden appearance of characteristic information. Another example is that the energy storage unit 1013 can be an intelligent battery integrating intelligent charging and linkage, battery pack monitoring and on-line protection, and negative pulse maintenance and signal linkage, or it can be a lead-acid battery pack or a lithium-ion battery pack.

[0027] For another example, the channel conversion unit 1014 is respectively connected to the mains direct transmission unit 1011, the abnormal emergency unit 1012, the energy storage unit 1013, and the control module 103. The channel conversion unit 1014 can perform conversions among the channels corresponding to the mains power supply mode, the emergency power supply mode, and 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 in sequence, etc. The first composite switch ICS1 can provide a channel for the mains power supply mode, and it includes a first contact switch Q1 (continuous current-carrying switch) and a first non-contact switch I1 (instantaneous conversion current-carrying switch). The second composite switch ICS2 can provide channels for the emergency power supply mode and the energy storage power supply mode, and it includes a second contact switch Q2 (continuous current-carrying switch) and a second non-contact switch I2 (instantaneous conversion current-carrying switch). Further, the first end of the first contact switch Q1 is respectively connected to the first end of the mains direct transmission unit 1011 and the first end of the first non-contact switch I1. The second end of the first contact switch Q1 is respectively connected to the second end of the first non-contact switch I1 and the second end of the second contact switch Q2. The first end of the second contact switch Q2 is respectively connected to the first end of the abnormal emergency unit 1012 and the first end of the second non-contact switch I2. The second end of the second contact switch Q2 is connected to the second end of the second non-contact switch I2. Also, 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 respectively connected to the third end of the first contact switch Q1, the third end of the first non-contact switch I1, the third end of the second contact switch Q2, and the third end of the second non-contact switch I2. For another example, the first contact switch Q1 and the second contact switch Q2 are electromechanical switches, and the electromechanical switches include, but are not limited to, contactors, relays, and electric load switches, etc.; the first non-contact switch I1 and the second non-contact switch I2 are semiconductor power switches, and the semiconductor power switches 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-based power semiconductor devices, and silicon carbide-based power semiconductor devices, etc.

[0028] For another example, the first intellectual unit 1021 is X1, the second intellectual unit 1022 is X2, and the third intellectual unit 1023 is X3. The X1, X2, and X3 refer to devices embedded with software and having processing, computing, and editing functions, including but not limited to inductive power electronic chips, modules, and monitoring instruments, etc. The output signal can be set and edited by software into a 4 - 20 mA dynamic current signal or a 1 - 5 V dynamic voltage signal, or directly converted into a signal level for applying an interruption to the control module 103. The installation location can be any position (without direct connection to the power line) on the mains direct transmission branch inside the system cabinet or on the mains incoming side close to the power line. For another example, the control module 103 can control the orderly operation of all components, modules, and units, monitor the information of all intellectual units and intelligent instruments, and switch the power supply mode according to the characteristic information from X1 - X3 or the parameter severe abnormality information from IA1 - IA3. It includes but not limited to single-chip microcomputers, microcomputers, industrial control computers, programmable controllers, logic control modules with analysis, computing, and judgment functions, and intelligent instruments embedded with computer chips, etc. The control signal lines are connected to all instruments, intellectual units, controlled contact and non-contact switches, controlled units, and relevant components or modules inside the intelligent battery.

[0029] For another example, the detection module 104 of the intelligent fast emergency power supply system 10 for monitoring high - voltage short - circuit faults based on the symbol method is respectively connected to the power supply module 101 and the control module 103. 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 instruments IA, IA1, IA2, and IA3. The intelligent instruments can be DDC - Ⅲ or DDC - Ⅳ type automation instruments and other types of modern intelligent instruments. Further, IA can monitor normal operating parameters such as current, voltage, active power, reactive power, power factor, and battery voltage; IA1 can capture the parameter severe abnormality information before the fault power failure, and its signal sampling point is located at any position on the power supply incoming side or the mains direct transmission branch; IA2 can monitor the inverter output parameters, and its signal sampling point is located on the output side of the enhanced inverter ELn, and the primary and secondary wiring methods shall be subject to the product technical specification; and IA3 can secondarily capture the parameter severe abnormality information before the fault power failure, and its signal sampling point is located at any position between the channel conversion unit 1014 and the output switch S2. The display panels of the above - mentioned IA and IA2 are set on the system cabinet surface, the primary monitoring elements are set inside the system cabinet, IA1 and IA3 only contain the primary monitoring elements inside the cabinet and do not require a display panel, and the primary and secondary wire connections of all intelligent instruments can be made using the conventional wiring methods in the industry or connected according to the product technical specification.

[0030] The intelligent fast emergency power supply system for monitoring high-voltage short-circuit faults based on the symbol method provided by this application captures the characteristic information that suddenly appears at the moment of high-voltage power grid short circuit through the intelligent recognition units of each phase of the power line. That is to say, by utilizing the advantage that the characteristic information is not restricted by the transient process, the risk of high-voltage power grid short-circuit power-off can be predicted in advance. Furthermore, 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 according to this characteristic information, and the switching time is less than 0.01 milliseconds, ensuring uninterrupted power supply to the electrical load. At the same time, without semiconductor thermal on-line conversion, the power supply safety and reliability are greatly improved.

[0031] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, 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, it should be considered as the scope recorded in this specification.

[0032] Specific examples are used in this article to elaborate on the principle and implementation mode of this application. The description of the above embodiments is only used to help understand the method and its core idea of this application; at the same time, for those of ordinary skill in the art, according to the idea of this application, there will be changes in the specific implementation mode and application scope. In summary, the content of this specification should not be construed as a limitation to 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, and the monitoring module includes a first intelligence unit arranged 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 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, 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, and the power supply mode includes a mains power supply mode, an emergency power supply mode and an energy storage power supply mode.

2. The intelligent fast emergency power supply system according to claim 1 is characterized in that: The attributes of the characteristic information include at least one of current variation, voltage variation, harmonic mutation and impedance mutation.

3. The intelligent fast emergency power supply system according to claim 1 is characterized in that: The control module is specifically used to switch the mains power supply mode to the emergency power supply mode in response to the moment 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.

4. The intelligent rapid emergency power supply system according to claim 1, characterized in that: The abnormal emergency unit comprises an anti-shock rectifier, an enhanced inverter and a filter which are connected in series in sequence.

5. The intelligent fast emergency power supply system according to any one of claims 1 to 4, 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.

6. The intelligent rapid emergency power supply system according to claim 5, 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 contact 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 contact switch and the third end of the second contactless switch.

7. The intelligent rapid emergency power supply system according to claim 6, 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.

8. The intelligent rapid emergency power supply system according to claim 7, characterized in that: The electromechanical switch includes a contactor, a relay or an electric load switch.

9. The intelligent rapid emergency power supply system according to claim 7, 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.

10. The intelligent rapid emergency power supply system according to claim 5, characterized in that: 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. The detection module is configured to detect operating parameters of the power supply module and send the operating parameters to the control module.

Images