An intelligent fast emergency power system automatically detects cold online devices

Abstract

The application discloses an intelligent rapid emergency power supply system capable of automatically detecting cold online devices, relates to the field of modern power electronics, and comprises an information detection factor, an information switch module, a composite rapid switch, an intelligent controller, a mains direct transmission branch, an impact-resistant rectifier, an enhanced inverter, a filter, a smart battery unit, and monitoring instruments and switches. In view of the problem that certain abnormal probabilities exist in standard ISPS online components and cold online units, the application provides the intelligent rapid emergency power supply system capable of automatically detecting cold online devices, so that low-probability abnormal conditions of ISPS online devices and cold online units can be discovered in time, and the safety and reliability of the ISPS are further improved.

Description

Technical Field

[0001] This application relates to the field of modern power electronics technology, and in particular to an intelligent fast emergency power supply system for automatically detecting cold online devices. Background Technology

[0002] As is well known, the "Intelligent Swift Emergency Power System (ISPS)" (hereinafter referred to as "Standard ISPS") based on the standard "T / ASC 04-2019" has solved a series of historical "problems" of traditional UPS, such as low efficiency, high harmonics, high temperature rise, multiple heat hazards, frequent failures, short lifespan, high power consumption, system complexity, and high risk of information leakage. It has found a new energy-saving and environmentally friendly solution for uninterrupted power supply to important loads. Under normal circumstances, the semiconductor devices, modules, and units in the Standard ISPS system are always in a low-temperature, cold-line state without carrying load current. Although the probability of abnormalities and failures is extremely low, in the long-term no-load online aging, they are inevitably affected by the environment and will inevitably experience hidden abnormalities such as parameter drift. If such abnormalities are not detected in time, the emergency response will fail when a mains power failure occurs and power switching is required. Abnormalities of cold-line devices inside the ISPS generally occur when the ISPS is nearing the end of its lifespan or under special circumstances where semiconductor parameters drift or interference factors accumulate over a long period of time due to long-term environmental reasons. Although the probability is extremely low, the consequences should not be ignored! Utility Model Content

[0003] The purpose of this application is to provide an intelligent and rapid emergency power supply system that automatically detects cold online devices, addressing the issue that there is a certain probability of abnormality in the online components and cold online units of the standard ISPS. This system enables the timely detection of low-probability abnormalities in the online and cold online units of the ISPS, thereby further improving the safety and reliability of the ISPS.

[0004] To achieve the above objectives, this application provides the following solution:

[0005] This application provides an intelligent fast emergency power supply system (ISPS) for automatically detecting cold online devices. The system includes an information detection factor, an information switch module, a composite fast switch, an intelligent controller, a mains direct-drive branch, an impulse-resistant rectifier, an enhanced inverter, a filter, a smart battery unit, and monitoring instruments and switches. Under normal conditions, the intelligent controller performs regular monitoring and control of the information detection factor and information switch. This enables routine maintenance of online devices and units, and allows for timely detection and handling of anomalies, effectively improving the safety and reliability of the intelligent fast emergency power supply system. Therefore, this application addresses the issue of a certain probability of anomalies in the online components and cold online units of the standard ISPS by providing an intelligent fast emergency power supply system for automatically detecting cold online devices. This allows for the timely detection of low-probability anomalies in the online and cold online units of the ISPS, thereby further improving the safety and reliability of the ISPS.

[0006] The information detection factor is a current-sensing, non-contact power electronic chip or module with intelligent recognition function, capable of sensing and identifying changes in current in the measured power line. In this application, the contactless switch, the contact switch, the filter in the emergency branch, the enhanced inverter, and the impulse-resistant rectifier in the composite fast switch are all equipped with inductive information detection factors at both ends to monitor changes in the current signal in the power line. The information detection factors in this application are X1 to X13, where information detection factors X1 and X8 are located in the intelligent fast switch Cf, and information detection factors X9 to X13 are located in the emergency branch. Specifically, information detection factors X1 and X2 are set at both ends of the contact switch Q2; information detection factors X3 and X4 are set at both ends of the non-contact switch I2; information detection factors X5 and X6 are set at both ends of the non-contact switch I1; information detection factors X7 and X8 are set at both ends of the contact switch Q1; information detection factors X9 and X10 are set at both ends of the filter (LC); information detection factor X11 is set at the input of the enhancement inverter (ELn); and information detection factors X12 and X13 are set at both ends of the surge rectifier.

[0007] The information switch module in this application is a MaM, which is a control switch for connecting or disconnecting the power line of the object under test with "ground". In this application, the information control module consists of multiple switch branches; each switch branch consists of a dual-control power electronic switch and a resistor; the output terminals of each switch branch are connected in parallel and then connected to the "ground" terminal through a common resistor; the multiple switch branches are divided into three circuits; the dual-control power electronic switch is a power MOS, IGBT, IPM, IGCT, IEBT, or gallium nitride and silicon carbide semiconductor switching device or module; the resistor can be any type of resistor.

[0008] Specifically, the information switch module includes three switch branches: N1, N2, and N3, where the N1 circuit contains a contactless switch I. 11 Series resistor R 11 Non-contact switch I 12 Series resistor R 12 Non-contact switch I 13 Series resistor R 13 There are 3 branches in total; the N2 circuit contains a contactless switch I. 21 Series resistor R 21 Non-contact switch I 22 Series resistor R 22 Non-contact switch I 23 Series resistor R 23 There are 3 branches in total; the N3 circuit contains one branch, which includes a contactless switch I3 connected in series with resistor R3. The input terminals of each branch in each circuit are connected to the test point via the corresponding primary signal line, and the output terminals of all branches are connected in parallel and then connected to ground via the total resistor R.

[0009] The above-mentioned contactless switch I 11 I 12 I 13 I 21 I 22 I 23 I3 and I3 are dual-control semiconductor switches or modules used to control the "on" or "off" connection between the corresponding primary signal line and "ground". The control level is connected to the control signal line of the intelligent controller IPo. All resistors connected in series are ordinary resistors or adjustable resistors.

[0010] During the direct mains power supply mode, the intelligent controller periodically causes the contactless switches in the information switch module to sequentially enter the conducting state, and then sequentially controls the connection or disconnection between the corresponding monitored object and "ground". Based on the changes in the current signal identified by the relevant information detection factors, it determines whether the monitored object is normal, detects abnormalities and promptly alarms and records them, realizing the routine, maintenance and automatic monitoring and detection of cold online devices, thereby effectively improving the safety and reliability of the intelligent fast emergency power supply system.

[0011] The intelligent controller of this application's ISPS is IPo, and its finished product is a microcontroller, microcomputer, industrial control computer, programmable controller, logic control module with analysis, calculation and judgment functions, or intelligent instrument with embedded computer chip. The control signal line of the intelligent controller IPo connects to all instruments, all modules, all controlled components, all controlled units, and intelligent battery unit. The functions of the intelligent controller IPo are to control the orderly operation of all components, modules and units, control information detection factors and information switch modules to perform routine maintenance tests on online components, and control the output terminal to start the fast conversion program in a timely manner.

[0012] The composite fast switch of this application's ISPS is Cf, specifically including composite switch ICS1 and composite switch ICS2. Composite switch ICS1 consists of a contact switch Q1 and a contactless switch I1 connected in parallel, serving as the switching channel for direct mains power supply mode; while composite switch ICS2 consists of a contactless switch I2 and a contact switch Q2 connected in parallel, serving as the switching channel for abnormal emergency power supply mode. Specifically, the input terminals of composite switch ICS1 (i.e., the input terminals of contact switch Q1 and contactless switch I1) are connected to the output terminal of the mains direct power supply branch (Dt) switch S1. The input terminals of composite switch ICS2 (i.e., the input terminals of contact switch Q2 and contactless switch I2) are connected to the output terminal of the filter (LC) in the emergency power supply branch (Ae). The output terminals of composite switch ICS1 (i.e., the output terminals of contact switch Q1 and contactless switch I1) and composite switch ICS2 (i.e., the output terminals of contact switch Q2 and contactless switch I2) are connected in parallel and then connected to the input terminal of output switch S2. Contact switches Q1 and Q2 are used to continuously carry the load current in the mains direct power supply mode, the emergency power supply mode, or the battery inverter emergency power supply mode. Contactless switches I1 and I2 are used to carry the load current during the instantaneous transition between the mains direct power supply mode and the emergency power supply mode. The control signal lines of contact switches Q1 and Q2, as well as the control signal lines of contactless switches I1 and I2 within the composite fast circuit breaker (Cf), are all connected to the control signal lines of the intelligent controller IPo. Here, contactless switches I1 and I2 can be various fully controlled power electronic switches, including but not limited to thyristors, power MOSFETs, IGBTs, IPMs, IGCTs, IEBTs, and power semiconductor devices or modules such as gallium nitride and silicon carbide. Meanwhile, the contact switches Q1 and Q2 within the composite fast circuit breaker (Cf) can be contactors, magnetic starters, relays, magnetic saturation relays, and other electrically controlled electromechanical switches.

[0013] The mains power transmission branch of the ISPS in this application is Dt, which consists only of a common switch S1 and associated wires. It is a channel for directly transmitting mains power to important loads, i.e., the mains power transmission channel in the cold online power supply mode. The input terminal of switch S1 is directly connected to the output terminal of the power supply line switch K01, and the output terminal of switch S1 is directly connected to the input terminal of the composite fast switch (Cf).

[0014] The ISPS emergency circuit of this application is Ae, which consists of an impulse-resistant rectifier (RU), an enhancement-type inverter (ELn), and a filter (LC) connected in series. It serves as the channel for converting and transmitting mains power. During the emergency mode output, the mains power is converted (AC / DC), inverted (DC / AC), and filtered (AC / AC) before being transmitted to the load. At this time, the AC / DC and DC / AC semiconductor modules carry the load current in real time, thus achieving "hot-on" transmission. The rectifier is impulse-resistant; when the load current is not impulse-driven, it can be replaced by a standard rectifier module or device. The inverter is enhancement-type; when the load will not be overloaded and the load power factor is high during an emergency, it can be replaced by a standard inverter module or device. The input terminal of the surge-resistant rectifier RU is the input terminal of the emergency branch Ae; the output terminal of the filter LC is the output terminal of the emergency branch Ae; the DC bus between the surge-resistant rectifier RU and the enhanced inverter ELn is connected to the discharge output terminal of the intelligent battery unit (IIU); the surge-resistant rectifier RU, the enhanced inverter ELn, and the filter LC are all connected to the intelligent controller (IPo) through control signal lines.

[0015] The N1 circuit is a three-phase AC primary signal sampling circuit (referred to as a three-phase AC sampling signal path), and the three phases include L 11 signal line, L 12 Signal lines and L 13 Signal lines; where L 11 Connecting contactless switches I in series 11 and resistance R 11 L 12 The signal lines are connected in series with the contactless switch I. 12 and resistance R 12 L 13 The signal lines are connected in series with the contactless switch I. 13 and resistance R 13 The N2 circuit is a three-phase AC sampling signal path, and the three phases include L... 21 signal line, L 22 signal lines and L 23 Signal lines; where L 21 The signal lines are connected in series with the contactless switch I. 21 and resistance R 21 L 22 The signal lines are connected in series with the contactless switch I. 22 and resistance R 22 L 23 The signal lines are connected in series with the contactless switch I. 23 and resistance R 23N3 is a DC signal sampling signal line, i.e., a DC signal sampling path, which is connected in series with a contactless switch I3 and a signal resistor R3. The starting point of each signal line is drawn from the power line where the corresponding monitored object is located. After each is connected in series with a contactless switch and a branch resistor, its terminal is connected in parallel to a common resistor, i.e., one end of the total resistor R. The other end of the common resistor R is connected to "ground".

[0016] The parameter monitoring instruments IA, IA1, IA2, and IA3 in this application's ISPS can be DDC-III or DDC-IV type automated instruments or other types of modern intelligent instruments. Parameter monitoring instrument IA is used to monitor the dynamic values ​​of parameters such as current, voltage, frequency, active power, reactive power, power factor, and battery DC voltage. Parameter monitoring instrument IA2 is used to monitor the dynamic values ​​of inverter operating parameters. Parameter monitoring instruments IA1 and IA3 are used to monitor "severe parameter anomaly" information instantaneously before a network power outage. In practice, the functions and division of labor of parameter monitoring instruments IA, IA1, IA2, and IA3 are not unique and can be interchanged. The display panels of all parameter monitoring instruments are located on the ISPS cabinet, and their detection elements are set at any position on the monitored power line. Parameter monitoring instruments IA1 and IA3 can also only have monitoring modules or elements, and their signal lines are connected to the control signal lines of the intelligent controller (IPo).

[0017] The intelligent battery unit (IIU) in this application's ISPS is an energy storage unit integrating intelligent functions such as battery pack monitoring, intelligent charging, intelligent discharging, intelligent conversion, intelligent protection, control by an intelligent controller (IPo), and linkage control based on information detection factors. Its discharge output terminal is connected to the DC power line between the surge-resistant rectifier (RU) and the enhanced inverter (ELn), its charging line is drawn from the output side of the power input switch K01, and its signal line is connected to the intelligent controller (IPo). The internal structure and principle of the intelligent battery unit IIU are detailed in another patent; in this application, it is merely one of the essential units of this power system. However, under the condition of meeting functional requirements, the intelligent battery unit IIU can also be replaced by a common lead-acid battery pack or a lithium-ion battery pack.

[0018] The intelligent fast emergency power supply system (ISPS) for automatic detection of cold online devices of this application has the following beneficial effects: (1) Under normal conditions, the ISPS of this application works in the direct power supply mode. The cold online devices I1 and I2 are prone to potential abnormalities (accumulation of interference signals, drift of physical parameters, poor contact of pins, etc.). Therefore, they are in a long-term cold online state or at the end of the chip life, and there is a risk of failure during emergency switching. (1) Such risks can be avoided after implementing regular automatic monitoring; (2) The contact switch Q2 of the emergency output branch in the intelligent fast switch is in a state of voltage but no current for a long time. If it is not controlled due to the accumulation of interference signals, poor contact of contacts due to temperature changes, or changes in mechanical elasticity, it will fail when emergency switching is required and affect the emergency function. After implementing automatic monitoring, its abnormality can be detected in time, which is convenient for maintenance personnel to deal with it online in time; (3) In the long-term cold online process, the contact of the anti-impact rectifier, the enhanced inverter and the filter may have poor contact due to temperature changes, or the control line may have interference signal accumulation, which may lead to abnormal operation at emergency time. After implementing automatic monitoring, such abnormalities can be avoided; (4) Information detection factors X1 to X8 can be used as information modules for whether the cold online switch status is normal, and also as information modules for feedback of the switching action process at the moment of output conversion; (5) Information monitoring factors X9 to X13 can be used as information modules for whether the cold online unit status is normal, and also as information modules for the reaction process when abnormal emergency output occurs. Attached Figure Description

[0019] Figure 1 A schematic diagram of the intelligent fast emergency power supply system for automatically detecting cold online devices provided in this application;

[0020] Figure 2 A schematic diagram of the information switch module provided in this application. Detailed Implementation

[0021] A more specific implementation of the automatic detection of the ISPS of cold-on-line devices in this application is as follows:

[0022] a. Implementation method of main circuit:

[0023] like Figure 1As shown, the mains power is introduced through the incoming switch K01 and then divided into two paths. One path is connected to the mains direct transmission branch (Dt), which is connected to the output of the incoming switch K01 via the input of switch S1. The other path is connected to the emergency branch (Ae), which is connected to the output of the incoming switch K01 via the input of the surge rectifier (RU). The output of the mains direct transmission branch (Dt) is connected to the input of the composite switch ICS1 in the composite fast circuit breaker (Cf) (i.e., the parallel input of the contactless switch I1 and the contact switch Q1); the output of the emergency branch (Ae) is connected to the input of the enhanced inverter (ELn) and the discharge output of the intelligent battery unit IIU; the output of the enhanced inverter (ELn) is connected to the input of the filter (LC); the output of the filter (LC) is connected to the input of the composite switch ICS2 in the composite fast circuit breaker (Cf) (i.e., the parallel input of the contact switch Q2 and the contactless switch I2); the output of the composite switch ICS1 (i.e., the output of the contactless switch I1 and the contact switch Q1) and the output of the composite switch ICS2 (i.e., the output of the contactless switch I2 and the contact switch Q2) are connected in parallel and then connected to the input of the output switch S2; the output of the output switch S2 is connected to the load distribution cabinet AL. The power supply line for parameter monitoring instrument IA is drawn from any position after the power input switch. The power supply line for parameter monitoring instrument IA2 is drawn from any position between the enhanced inverter (ELn) and the filter (LC). The power supply line for parameter monitoring instrument IA1 is drawn from any position on the mains direct transmission branch (Dt). The power supply line for parameter monitoring instrument IA3 is drawn from any position between the composite fast switch (Cf) and the output switch S2. Signal sampling circuits N1 and N2 are both connected to the three-phase (L1, L2, L3) power lines. The starting point of signal sampling circuit N1 is drawn from any position between the filter (LC) and the composite fast switch (Cf); the starting point of signal sampling circuit N2 is drawn from any position between the enhanced inverter (ELn) and the filter (LC); and the starting point of signal sampling circuit N3 is drawn from any position between the impulse-resistant rectifier (RU) and the enhanced inverter (ELn). The ends of each sampling signal circuit (N1, N2, N3) are connected to the information switch module MaM.

[0024] b. Implementation plan for the information switch module (MaM):

[0025] like Figure 2 As shown, both N1 and N2 circuits contain three single-phase (L1, L2, L3) signal sampling channels. Each single-phase signal line is introduced into the information switch module (MaM) and then connected in series with a contactless switch and a branch resistor. That is, in the N1 circuit, L... 11 Signal line connected to contactless switch I 11 The positive terminal, and the contactless switch I 11 The negative terminal is connected to the resistor R. 11 One end; L 12Signal line connected to contactless switch I 12 The positive terminal, and the contactless switch I 12 The negative terminal is connected to the resistor R. 12 One end; L 13 Signal line connected to contactless switch I 13 The positive terminal, and the contactless switch I 13 The negative terminal is connected to the resistor R. 13 One end. Similarly, in the N2 loop, L 21 Signal line connected to contactless switch I 21 The positive terminal, and the contactless switch I 21 The negative terminal is connected to the resistor R. 21 One end; L 22 Signal line connected to contactless switch I 22 The positive terminal, and the contactless switch I 22 The negative terminal is connected to the resistor R. 22 One end; L 23 Signal line connected to contactless switch I 23 The positive terminal, and the contactless switch I 23 The negative terminal is connected to the resistor R. 23 One end of the resistor. In the N3 circuit, the DC signal line is connected to the positive terminal of the contactless switch I3, and the negative terminal of the contactless switch I3 is connected to one end of the resistor R3. Resistor R 11 R 12 R 13 R 21 R 22 R 23 The other end of R3 is connected together and connected to one end of the common signal resistor R, and the other end of the common resistor R is connected to "ground".

[0026] c. Implementation plan for information detection factors:

[0027] like Figure 1 As shown, information detection factors X1 and X2 are arranged close to the wires at both ends of the contact switch Q2; information detection factors X3 and X4 are arranged close to the wires at both ends of the non-contact switch I2; information detection factors X5 and X6 are arranged close to the wires at both ends of the non-contact switch I1; information detection factors X7 and X8 are arranged close to the wires at both ends of the contact switch Q1; information detection factor X9 is arranged close to the wire at the output end of the filter (LC); information detection factor X10 is arranged close to the wire between the enhancement inverter (ELn) and the filter (LC); information detection factors X11 and X12 are arranged close to the wire between the enhancement inverter (ELn) and the impulse rectifier (RU); and information detection factor X13 is arranged close to the wire at the input end of the impulse rectifier (RU). All signal recognition modules are connected to the control signal lines of the intelligent controller IPo.

[0028] d. Control signal line connection scheme:

[0029] All control signal lines of the monitored and controlled devices, modules, apparatuses, or units are connected to the control signal lines of the intelligent controller IPo.

[0030] Explanation of the principle:

[0031] like Figure 1 As shown, under the embodiments described above, the operating modes of the host system and key units in this application are as follows:

[0032] 1) Mains power direct transmission mode: The normal power supply mode of this application is the same as that of standard ISPS. Under normal external power supply conditions, the transmission path of mains power is: incoming switch K01 → switch S1 → contact switch Q1 → output switch S2 → load distribution cabinet AL.

[0033] 2) Abnormal Emergency Power Supply Mode: The moment the intelligent controller IPo detects the "severe parameter abnormality" information from parameter monitoring instruments IA1 and IA3, it quickly initiates the "positive conversion" procedure between the composite switch ICS1 branch and the composite switch ICS2 branch (non-contact switch I1 on → contact switch Q1 off → non-contact switch I1 off → non-contact switch I2 on → contact switch Q2 on → non-contact switch I2 off), seamlessly completing the conversion from the mains direct power supply mode to the abnormal emergency power supply mode. The transmission path of the mains power during this process is: incoming switch K01 → impulse rectifier (RU) → enhanced inverter (ELn) → filter (LC) → contact switch Q2 → output switch S2 → load distribution cabinet, and then automatically switches to the battery pack inverter emergency power supply state until the battery energy is exhausted, or the machine is manually shut down, or the mains power returns to normal.

[0034] 3) Restoration to normal mode: During the emergency power supply of the battery inverter, if the intelligent controller IPo detects that the grid parameters have returned to normal, it will automatically start the "negative conversion" procedure between the composite switch ICS2 branch and the composite switch ICS1 branch (no-contact switch I2 on → contact switch Q2 off → no-contact switch I2 off → no-contact switch I1 on → contact switch Q1 on → no-contact switch I1 off), and complete the restorative conversion from the emergency power supply mode of the battery inverter to the direct power supply mode of the mains.

[0035] 4) Maintenance detection: In the direct mains power transmission mode, the intelligent controller IPo controls the corresponding contactless switch in the information switch module (MaM) and controls the monitored object to enter and exit the working state. Combined with the information changes of information detection factors X1 to X13, the cold online status of the monitored object is determined.

[0036] (1) Detect the status of each switch in the composite fast switch (Cf): The intelligent controller IPo controls the output of the enhanced inverter (ELn) to be turned off, and the contactless switch I in the corresponding N1 circuit in the information switch module (MaM) is activated. 11 Non-contact switch I 12 and contactless switch I 13 When the contact switch Q2 in the composite fast switch (Cf) is closed under the on-state condition, the output current will be shunt along the contact switch Q2 and the signal line through the information switch module MaM to flow into the ground. Information detection factors X1 and X2 will generate induced signals. When the contact switch Q2 is opened, the shunt current will disappear, and the induced signals in information detection factors X1 and X2 will also disappear. The changes in the information of information detection factors X1 and X2 can determine whether the cold-line state of the contact switch Q2 is normal. Similarly, when the contactless switch I2 is turned on and off, the changes in the signals of information detection factors X3 and X4 can determine whether the contactless switch I2 is in a normal state. To determine if the cold online state is normal: Turning on the contactless switch I1 will cause a shunt current in the mains direct current circuit of the contactless switch I1. Turning off the contactless switch I1 will eliminate the shunt current. The changes in the sensing information of information detection factors X5 and X6 can determine if the contactless switch I1 is normal. With the contactless switch I1 on, turning off the contact switch Q1 will eliminate the current in the contact switch Q1 branch. Turning the contact switch Q1 back on and turning off the contactless switch I1 will restore the mains direct current branch to normal. The changes in the signals of information detection factors X7 and X8 can then determine if the switch state of the contact switch Q1 is normal.

[0037] (2) Cold online status of the detection filter (LC): When the contactless switch of the corresponding N3 circuit in the information switch module MaM is turned on, the intelligent controller IPo controls the filter (LC) to turn off and on. If there are sensing signals at the information detection factors X9 and X10 at both ends, it indicates that the cold online status of the filter (LC) is normal; otherwise, it is abnormal.

[0038] (3) Detecting the cold online status of the enhanced inverter (ELn): When the contactless switch of the corresponding N2 circuit in the information switch module MaM is turned on, the intelligent controller IPo controls the enhanced inverter (ELn) to turn off and on. If there is a sensing signal at the information detection factors X10 and X11 at both ends, it indicates that the cold online status of the enhanced inverter (ELn) is normal; otherwise, it is abnormal.

[0039] (4) Detecting the cold online status of the surge-resistant rectifier (RU): With the contactless switch I3 corresponding to the N3 circuit in the information switch module MaM kept on, turn off the enhanced inverter (ELn) and control the surge-resistant rectifier (RU) to turn off and on. If there is an induction signal at the information detection factors X12 and X13 at its two ends, it indicates that the cold online status of the surge-resistant rectifier (RU) is normal; otherwise, it is abnormal.

[0040] The technical features of the above embodiments can be combined in any way. For the sake of brevity, 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.

[0041] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. Furthermore, those skilled in the art will recognize that, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. An intelligent fast emergency power supply system for automatically detecting cold-on-line devices, characterized in that, include: The system includes information detection factors, information switch modules, composite fast circuit breakers, intelligent controllers, mains direct transmission branches, impulse-resistant rectifiers, enhanced inverters, filters, intelligent battery units, monitoring instruments, and matching switches. Information detection factors are added to both ends of each contact and non-contact switch in the standard ISPS output conversion unit, both ends of the impulse-resistant rectifier in the emergency branch, both ends of the enhanced inverter, and both ends of the filter to monitor changes in the current signal within the line. An information switch module is added to the main unit to control changes in the signal in the monitored circuit, creating detection conditions for the information detection factors.

2. The intelligent fast emergency power supply system for automatically detecting cold online devices according to claim 1, characterized in that, The information detection factor is a current-sensing, non-contact power electronic chip or module with intelligent recognition function, which can sense and identify changes in current and presence or absence in the measured power line. An inductive information detection factor is added at both ends of each contact switch and contactless switch in the composite fast switch, at both ends of the impulse-resistant rectifier in the abnormal emergency branch, at both ends of the enhanced inverter, and at both ends of the filter to monitor changes in current signals in the power line.

3. The intelligent fast emergency power supply system for automatically detecting cold online devices according to claim 1, characterized in that, The information switch module is a control switch that connects or disconnects the power line of the object under test from the ground. The information switch module consists of multiple switch branches, each consisting of a dual-control power electronic switch and a resistor. The output terminals of each switch branch are connected in parallel and then connected to the ground terminal through a common resistor. The multiple switch branches are divided into three loops. The dual-control power electronic switch is one of the following: power MOS, IGBT, IPM, IGCT, IEBT, gallium nitride, silicon carbide semiconductor switching devices or modules. The resistor can be any type of resistor.

4. The intelligent fast emergency power supply system for automatically detecting cold online devices according to claim 1, characterized in that, The finished product of the intelligent controller is a microcontroller, microcomputer, industrial control computer, programmable controller, logic control module with analysis, calculation and judgment functions, or intelligent instrument with embedded computer chip; the control signal line of the intelligent controller connects all instruments, all modules, all controlled components, all controlled units and intelligent battery unit; the function of the intelligent controller is to control the orderly operation of all components, modules and units, control information detection factors and information switch modules to perform routine maintenance tests on online components, and control the output terminal to start the fast conversion program in a timely manner.

5. The intelligent fast emergency power supply system for automatically detecting cold online devices according to claim 1, characterized in that, The composite fast switch consists of composite switch ICS1 and composite switch ICS2. Composite switch ICS1 consists of a contact switch Q1 and a contactless switch I1 connected in parallel. Composite switch ICS2 consists of a contactless switch I2 and a contact switch Q2 connected in parallel. The contactless switches I1 and I2 are various types of fully controlled power electronic switches, including one of the following power semiconductor devices or modules: thyristor, power MOS, IGBT, IPM, IGCT, IEBT, gallium nitride, and silicon carbide. They are only used to carry the load current at the moment of switching between composite switch ICS1 and composite switch ICS2. The contact switches Q1 and Q2 are electrically controlled electromechanical switches, including contactors, magnetic starters, relays, and magnetic saturation relays.

6. The intelligent fast emergency power supply system for automatically detecting cold online devices according to claim 1, characterized in that, The emergency response branch consists of an impulse-resistant rectifier, an enhanced inverter, and a filter connected in series. The input terminal of the impulse-resistant rectifier is the input terminal of the emergency response branch. The output terminal of the filter is the output terminal of the emergency response branch. The DC bus between the impulse-resistant rectifier and the enhanced inverter is connected to the discharge output terminal of the smart battery unit. The impulse-resistant rectifier, the enhanced inverter, and the filter are all connected to the intelligent controller via control signal lines.

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