Generator transmitter redundant power supply system and method

Abstract

The invention belongs to the technical field of redundant power supply, and provides a redundant power supply system and method for a generator transmitter, and the system comprises an AC-DC flyback conversion module, a DC-DC flyback conversion module, a parallel connection anti-reverse module, a state monitoring module, and a power supply control module. According to the scheme provided by the invention, through cooperation of the AC-DC flyback conversion module, the DC-DC flyback conversion module, the parallel connection anti-reverse module, the state monitoring module and the power supply control module, dual-power-supply redundant power supply can be realized, and the power supply control module can realize redundant power supply based on the first power supply reliability, the second power supply reliability and the state monitoring result. And generating and sending a power supply control instruction, thereby realizing accurate control of the power supply process of the generator transmitter, and improving the power supply stability and reliability of the generator transmitter.

Description

Technical Field

[0001] The present invention relates to the technical field of redundant power supply, and in particular to a redundant power supply system and method for a generator transmitter. Background Art

[0002] The generator transmitter is a high-precision signal conversion unit. Its main function is to convert various voltage, current or power signals into digital signals or analog signals and send them to DEH (Digital Electro-Hydraulic Control System), DCS (Distributed Control System) and other units involved in the operation regulation or monitoring of the generator set.

[0003] In the related art, the generator transmitter can generally work normally directly using the 220V AC power supply system. However, in the single power supply mode, if the 220V AC power supply system has a power supply abnormality, it will directly cause the generator transmitter to lose power, which will lead to abnormal unit monitoring and even cause unplanned shutdown of the unit.

[0004] Therefore, the power supply scheme of the traditional generator transmitter has the problem of insufficient stability and reliability. Summary of the invention

[0005] The present invention provides a redundant power supply system and method for a generator transmitter, which are used to solve the defects of insufficient stability and reliability of power supply schemes of traditional generator transmitters.

[0006] In one aspect, the present invention provides a generator transmitter redundant power supply system, comprising: An AC-DC flyback conversion module is connected to an AC input power supply, and is used to convert an AC power signal of the AC input power supply into a first DC signal; A DC-DC flyback conversion module, connected to a DC input power supply, and configured to convert a DC power supply signal of the DC input power supply into a second DC power signal; A parallel anti-reverse module, used for connecting the DC output end of the AC-DC flyback conversion module and the DC output end of the DC-DC flyback conversion module in parallel and then connecting them to the generator transmitter; a state monitoring module, connected to the AC-DC flyback conversion module and the DC-DC flyback conversion module, respectively, and configured to monitor the operating states of the AC-DC flyback conversion module and the DC-DC flyback conversion module according to the first direct current signal and the second direct current signal, and output a state monitoring result; A power supply control module is respectively connected to the AC-DC flyback conversion module, the DC-DC flyback conversion module, the parallel anti-reverse module and the status monitoring module. The power supply control module is used to respectively determine a first power supply reliability rate of the first DC power signal and a second power supply reliability rate of the second DC power signal, and based on the first power supply reliability rate, the second power supply reliability rate and the status monitoring result, generate and send a power supply control instruction to the parallel anti-reverse module.

[0007] According to the generator transmitter redundant power supply system provided by the present invention, the AC-DC flyback conversion module includes: A first flyback conversion control circuit, a first voltage conversion circuit, a first switch circuit, a first feedback loop high voltage side circuit, and a first feedback loop low voltage side circuit; The first flyback conversion control circuit is respectively connected to the AC input power supply, the first voltage transformation circuit, the first switching circuit and the first feedback loop high-voltage side circuit; the first voltage transformation circuit is also connected to the generator transmitter; the first feedback loop high-voltage side circuit is connected to the first feedback loop low-voltage side circuit.

[0008] According to the generator transmitter redundant power supply system provided by the present invention, the DC-DC flyback conversion module includes: A second flyback conversion control circuit, a second voltage conversion circuit, a second switch circuit, a second feedback loop high voltage side circuit, and a second feedback loop low voltage side circuit; The second flyback conversion control circuit is respectively connected to the DC input power supply, the second voltage transformation circuit, the second switching circuit and the second feedback loop high-voltage side circuit; the second voltage transformation circuit is also connected to the generator transmitter; the second feedback loop high-voltage side circuit is connected to the second feedback loop low-voltage side circuit.

[0009] According to the generator transmitter redundant power supply system provided by the present invention, the parallel anti-reverse module includes: A first parallel anti-reverse circuit, a second parallel anti-reverse circuit, and a third parallel anti-reverse circuit; The input end of the first parallel anti-reverse circuit is connected to the first voltage output end of the AC-DC flyback conversion module and the first voltage output end of the DC-DC flyback conversion module respectively, and the output end of the first parallel anti-reverse circuit is connected to the microprocessor of the generator transmitter; The input end of the second parallel anti-reverse circuit is connected to the second voltage output end of the AC-DC flyback conversion module and the second voltage output end of the DC-DC flyback conversion module respectively, and the output end of the second parallel anti-reverse circuit is connected to the communication module of the generator transmitter; The input end of the third parallel anti-reverse circuit is respectively connected to the third voltage output end of the AC-DC flyback conversion module and the third voltage output end of the DC-DC flyback conversion module, and the output end of the third parallel anti-reverse circuit is connected to the relay module of the generator transmitter.

[0010] According to the generator transmitter redundant power supply system provided by the present invention, the state monitoring module includes: a first voltage detection circuit and a second voltage detection circuit; The input end of the first voltage detection circuit is connected to the AC-DC flyback conversion module, and the output end of the first voltage detection circuit is connected to the power supply control module; The first voltage detection circuit is used to compare the voltage value of the first DC signal with a first preset voltage threshold, and output a first state monitoring result to the power supply control module according to the comparison result; The input end of the second voltage detection circuit is connected to the DC-DC flyback conversion module, and the output end of the second voltage detection circuit is connected to the power supply control module; The second voltage detection circuit is used to compare the voltage value of the second direct current signal with a second preset voltage threshold, and output a second state monitoring result to the power supply control module according to the comparison result.

[0011] According to the generator transmitter redundant power supply system provided by the present invention, the power supply control module determines the first power supply reliability rate of the first DC power signal, including: Acquiring a voltage value, a frequency value, and a phase value of the first direct current signal within a preset time period; Calculating a first voltage fluctuation value based on a voltage value of the first direct current signal within a preset time period; Determine a maximum frequency value and a minimum frequency value among frequency values ​​of the first DC signal within a preset time period, and obtain a first frequency fluctuation value by subtracting the maximum frequency value from the minimum frequency value of the first DC signal within the preset time period; Subtracting the phase values ​​of the first direct current signal in a preset time period from preset phase reference values ​​and calculating the average, thereby obtaining a first phase fluctuation value; A first power supply reliability rate of the first direct current signal is obtained based on the first voltage fluctuation value, the first frequency fluctuation value, and the first phase fluctuation value.

[0012] According to the generator transmitter redundant power supply system provided by the present invention, based on the voltage value of the first DC signal within a preset time period, a first voltage fluctuation value is calculated, including: Subtracting the voltage value of the first direct current signal within a preset time period from a preset voltage reference value and calculating the absolute value, thereby obtaining a plurality of first voltage deviation values; Extracting a first target voltage deviation value exceeding a preset voltage deviation threshold value from the plurality of first voltage deviation values; All the first target voltage deviation values ​​are averaged to calculate a first voltage fluctuation value.

[0013] According to the generator transmitter redundant power supply system provided by the present invention, based on the first voltage fluctuation value, the first frequency fluctuation value and the first phase fluctuation value, a first power supply reliability rate of the first DC power signal is obtained, including: Inputting the first voltage fluctuation value, the first frequency fluctuation value, and the first phase fluctuation value into a pre-built power supply reliability prediction model to obtain a first power supply reliability of the first direct current signal output by the power supply reliability prediction model; Among them, the power supply reliability prediction model is obtained after training the deep learning network model based on voltage fluctuation value samples, frequency fluctuation value samples, phase fluctuation value samples and power supply reliability samples.

[0014] According to the generator transmitter redundant power supply system provided by the present invention, the power supply control module generates a power supply control instruction based on the first power supply reliability rate, the second power supply reliability rate and the status monitoring result, including: If the status monitoring result shows that the operating states of the AC-DC flyback conversion module and the DC-DC flyback conversion module are both normal, comparing the first power supply reliability rate with the second power supply reliability rate, and generating a power supply control instruction according to the comparison result; If the status monitoring result indicates that the operating status of the AC-DC flyback conversion module is abnormal or the operating status of the DC-DC flyback conversion module is abnormal, a power supply control instruction is generated according to the status monitoring result.

[0015] On the other hand, the present invention also provides a generator transmitter redundant power supply method, the method is based on a generator transmitter redundant power supply system including an AC-DC flyback conversion module, a DC-DC flyback conversion module, a parallel anti-reverse module, a state monitoring module and a power supply control module, the method comprising: Converting an AC power signal of an AC input power source into a first DC power signal through an AC-DC flyback conversion module; Converting a DC power signal of a DC input power source into a second DC power signal through a DC-DC flyback conversion module; The DC output end of the AC-DC flyback conversion module and the DC output end of the DC-DC flyback conversion module are connected in parallel through the parallel anti-reverse module and then connected to the generator transmitter; Monitoring the operating states of the AC-DC flyback conversion module and the DC-DC flyback conversion module according to the first DC power signal and the second DC power signal through a state monitoring module, and outputting a state monitoring result; The first power supply reliability rate of the first DC power signal and the second power supply reliability rate of the second DC power signal are respectively determined by the power supply control module, and based on the first power supply reliability rate, the second power supply reliability rate and the status monitoring result, a power supply control instruction is generated and sent to the parallel anti-reverse module.

[0016] The generator transmitter redundant power supply system and method provided by the present invention can realize dual-power redundant power supply through the cooperation of an AC-DC flyback conversion module, a DC-DC flyback conversion module, a parallel anti-reverse module, a status monitoring module and a power supply control module, and the power supply control module can generate and send power supply control instructions based on the first power supply reliability rate, the second power supply reliability rate and the status monitoring result, thereby realizing accurate control of the power supply process of the generator transmitter and improving the power supply stability and reliability of the generator transmitter. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of a generator transmitter redundant power supply system provided by an embodiment of the present invention; Figure 2 It is a structural diagram of the AC-DC flyback conversion module; Figure 3 It is a schematic diagram of the structure of the DC-DC flyback conversion module; Figure 4 is a structural schematic diagram of a first parallel anti-reverse circuit; Figure 5 is a structural schematic diagram of the second parallel anti-reverse circuit; Figure 6 is a schematic diagram of the structure of the third parallel anti-reverse circuit; Figure 7 is a structural schematic diagram of a first voltage detection circuit; Figure 8 is a structural schematic diagram of a second voltage detection circuit; Fig. 9 It is a flow chart of a redundant power supply method for a generator transmitter provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Combine the following Figure 1-Figure 9 The detailed scheme of the redundant power supply system and method for the generator transmitter provided by the embodiment of the present invention is described.

[0021] Figure 1 It is a schematic diagram of the structure of a generator transmitter redundant power supply system provided in an embodiment of the present invention.

[0022] like Figure 1 As shown, the generator transmitter redundant power supply system provided by the embodiment of the present invention specifically includes: The AC-DC flyback conversion module 110 is connected to the AC input power supply, and is used to convert the AC power signal of the AC input power supply into a first DC signal.

[0023] The DC-DC flyback conversion module 120 is connected to the DC input power supply, and is used to convert a DC power supply signal of the DC input power supply into a second DC power signal.

[0024] The parallel anti-flyback module 130 is used to connect the DC output end of the AC-DC flyback conversion module 110 and the DC output end of the DC-DC flyback conversion module 120 in parallel and then connect them to the generator transmitter.

[0025] The state monitoring module 140 is connected to the AC-DC flyback conversion module 110 and the DC-DC flyback conversion module 120 respectively. The state monitoring module 140 is used to monitor the operating states of the AC-DC flyback conversion module 110 and the DC-DC flyback conversion module 120 according to the first DC power signal and the second DC power signal, and output the state monitoring result.

[0026] The power supply control module 150 is respectively connected to the AC-DC flyback conversion module 110, the DC-DC flyback conversion module 120, the parallel anti-reverse module 130 and the status monitoring module 140. The power supply control module 150 is used to respectively determine the first power supply reliability rate of the first DC power signal and the second power supply reliability rate of the second DC power signal, and based on the first power supply reliability rate, the second power supply reliability rate and the status monitoring result, generate and send a power supply control instruction to the parallel anti-reverse module 130.

[0027] In this embodiment, after the AC-DC flyback conversion module 110 and the DC-DC flyback conversion module 120 are connected in parallel through the parallel anti-reverse module 130, both the AC input power supply and the DC input power supply can be introduced into the power supply system of the generator transmitter to achieve dual power supply redundancy. At the same time, the status monitoring module 140 and the power supply control module 150 can be used to monitor the power supply operation status, and the power supply reliability of the two power supply modes can be comprehensively analyzed to output the optimal power supply control instruction, thereby improving the power supply stability and power supply reliability of the generator transmitter.

[0028] In one embodiment, if Figure 2 As shown, the AC-DC flyback conversion module specifically includes: A first flyback conversion control circuit 210 , a first voltage transformation circuit 220 , a first switch circuit 230 , a first feedback loop high voltage side circuit 240 and a first feedback loop low voltage side circuit 250 .

[0029] The first flyback conversion control circuit 210 is respectively connected to the AC input power supply, the first transformer circuit 220, the first switch circuit 230 and the first feedback loop high-voltage side circuit 240. The first transformer circuit 220 is also connected to the generator transmitter. The first feedback loop high-voltage side circuit 240 is connected to the first feedback loop low-voltage side circuit 250.

[0030] See also Figure 2 In the first flyback conversion control circuit 210, the connector J1 is connected to the AC input power supply AC220V, which is rectified by the fuse F1 and the diode rectifier module D2, and filtered by the capacitor C3 to obtain a stable DC power supply. The resistor R2 is the power pre-charging resistor of the first control chip U1, the capacitor C6 is the power filter capacitor of the first control chip U1, the capacitor C15 is the reference source filter capacitor of the first control chip U1, the winding 3-4 of the first transformer T1 and the resistor R4, the Schottky diode D4, the capacitor C6, and the capacitor C14 together form an auxiliary power supply circuit to supply power to the first control chip U1, and the Schottky diodes D7 and D8 are clamping diodes.

[0031] In the first transformer circuit 220, the 1-2 pins of the first transformer T1 are the primary windings, the 3-4 pins are the auxiliary power windings, which provide auxiliary power for the first control chip U1, and the 5-6 pins, the 7-8 pins, and the 9-10 pins are three output windings. The winding 5-6 and the Schottky diode D3, the capacitor C4, and the capacitor C5 form a +5V1_1 power circuit; the winding 7-8 and the Schottky diode D5, the capacitor C7, and the capacitor C8 form a +5V2_1 power circuit; the winding 9-10 and the Schottky diode D6, the capacitor C10, and the capacitor C11 form a +24V_1 power circuit.

[0032] In the first switch circuit 230, the Schottky diode D1, the capacitor C1 and the resistor R1 are the absorption sub-circuit of the first switch tube Q3, the resistor R9 is the primary current sampling resistor, the resistor R7 is the gate current limiting resistor of the first switch tube Q3, and the resistor R8 is the gate pull-down resistor of the first switch tube Q3.

[0033] The first feedback loop high-voltage side circuit 240 includes: capacitor C2, resistor R3, transistor Q1, resistor R5, capacitor C9, resistor R6, capacitor C12, transistor Q2, capacitor C13, resistor R10, resistor R11, capacitor C16, resistor R14 and resistor R15.

[0034] The first feedback loop low-voltage side circuit 250 includes a resistor R16, a resistor R18, a resistor R12, a resistor R13, a voltage regulator diode D9, a three-terminal regulator U3, a resistor R17, a capacitor C17 and an optocoupler U2.

[0035] In one embodiment, if Figure 3 As shown, the DC-DC flyback conversion module specifically includes: The second flyback conversion control circuit 310 , the second voltage transformation circuit 320 , the second switch circuit 330 , the second feedback loop high voltage side circuit 340 and the second feedback loop low voltage side circuit 350 .

[0036] The second flyback conversion control circuit 310 is respectively connected to the DC input power supply, the second voltage transformation circuit 320, the second switching circuit 330 and the second feedback loop high-voltage side circuit 340. The second voltage transformation circuit 320 is also connected to the generator transmitter. The second feedback loop high-voltage side circuit 340 is connected to the second feedback loop low-voltage side circuit 350.

[0037] See also Figure 3In the second flyback conversion control circuit 310, the connector J2 is connected to the DC input power supply DC110V, and is filtered through the fuse F2 and the filter capacitor C21 to obtain a stable DC power supply. The resistor R20 is the power pre-charging resistor of the second control chip U4, the capacitor C25 is the power filter capacitor of the second control chip U4, the capacitor C35 is the reference source filter capacitor of the second control chip U4, the winding 3-4 of the second transformer T2 and the resistor R22, the Schottky diode D14, the capacitor C25, and the capacitor C34 together form an auxiliary power sub-circuit to supply power to the second control chip U4, and the Schottky diodes D17 and D19 are clamping diodes.

[0038] In the second transformer circuit 320, the pins 1-2 of the second transformer T2 are the primary windings, the pins 3-4 are the auxiliary power windings, which provide power for U4, and the pins 5-6, 7-8, and 9-10 are three output windings. Winding 5-6 and Schottky diode D12, capacitor C22, and capacitor C23 form a +5V1_2 power circuit; winding 7-8 and Schottky diode D15, capacitor C26, and capacitor C27 form a +5V2_2 power circuit; winding 9-10 and Schottky diode D16, capacitor C29, and capacitor C30 form a +24V_2 power circuit.

[0039] In the second switch circuit 330, the Schottky diode D11, the capacitor C18 and the resistor R19 are the absorption circuit of the second switch tube Q6, the resistor R27 is the primary current sampling resistor, the resistor R25 is the gate current limiting resistor of the second switch tube Q6, and the resistor R26 is the gate pull-down resistor of the second switch tube Q6.

[0040] The second feedback loop high-voltage side circuit 340 includes capacitor C20, resistor R21, transistor Q4, resistor R23, capacitor C28, resistor R24, capacitor C31, transistor Q5, capacitor C32, resistor R28, resistor R29, capacitor C36, resistor R32 and resistor R33.

[0041] The second feedback loop low-voltage side circuit 350 includes a resistor R34 , a resistor R36 , a resistor R30 , a resistor R31 , a voltage regulator diode D20 , a three-terminal regulator U7 , a resistor R35 , a capacitor C38 , and an optocoupler U5 .

[0042] In one embodiment, the parallel anti-reverse module specifically includes: A first parallel anti-reverse circuit, a second parallel anti-reverse circuit and a third parallel anti-reverse circuit.

[0043] The input end of the first parallel anti-reverse circuit is respectively connected to the first voltage output end of the AC-DC flyback conversion module and the first voltage output end of the DC-DC flyback conversion module, and the output end of the first parallel anti-reverse circuit is connected to the microprocessor of the generator transmitter.

[0044] like Figure 4 As shown, the first parallel anti-reverse circuit specifically includes: a Schottky diode D21, a Schottky diode D22, a filter capacitor C41, a first switch K1 and a second switch K2.

[0045] Among them, Schottky diode D21 and Schottky diode D22 are used to connect the first voltage output terminal +5V1_1 of the AC-DC flyback conversion module and the first voltage output terminal +5V1_2 of the DC-DC flyback conversion module in parallel, and output the +5V1 power supply for the microprocessor of the generator transmitter. At the same time, Schottky diode D21 and Schottky diode D22 can prevent the reverse movement of current. The first switching switch K1 and the second switching switch K2 can respectively control the connection and disconnection of the first voltage output terminal +5V1_1 of the AC-DC flyback conversion module and the first voltage output terminal +5V1_2 of the DC-DC flyback conversion module.

[0046] The input end of the second parallel anti-reverse circuit is connected to the second voltage output end of the AC-DC flyback conversion module and the second voltage output end of the DC-DC flyback conversion module respectively, and the output end of the second parallel anti-reverse circuit is connected to the communication module of the generator transmitter.

[0047] like Figure 5 As shown, the second parallel anti-reverse circuit specifically includes: a Schottky diode D23, a Schottky diode D24, a filter capacitor C42, a third switch K3 and a fourth switch K4.

[0048] Among them, the Schottky diode D23 and the Schottky diode D24 are used to respectively connect the second output terminal +5V2_1 of the AC-DC flyback conversion module and the second output terminal +5V2_2 of the DC-DC flyback conversion module in parallel, and output the +5V2 power supply for the communication module of the generator transmitter. At the same time, the Schottky diode D23 and the Schottky diode D24 can prevent the reverse movement of current. The third switching switch K3 and the fourth switching switch K4 can respectively control the connection and disconnection of the second output terminal +5V2_1 of the AC-DC flyback conversion module and the second output terminal +5V2_2 of the DC-DC flyback conversion module.

[0049] The input end of the third parallel anti-reverse circuit is respectively connected to the third voltage output end of the AC-DC flyback conversion module and the third voltage output end of the DC-DC flyback conversion module, and the output end of the third parallel anti-reverse circuit is connected to the relay module of the generator transmitter.

[0050] like Figure 6As shown, the third parallel anti-reverse circuit specifically includes: a Schottky diode D25, a Schottky diode D26, a filter capacitor C43, a fifth switch K5 and a sixth switch K6.

[0051] The Schottky diode D25 and the Schottky diode D26 are used to respectively connect the third output terminal +24V_1 of the AC-DC flyback conversion module and the third output terminal +24V_2 of the DC-DC flyback conversion module in parallel, and output a +24V power supply for the relay module of the generator transmitter. At the same time, the Schottky diode D25 and the Schottky diode D26 can prevent the current from moving in the opposite direction. The fifth switching switch K5 and the sixth switching switch K6 can respectively control the connection and disconnection of the third output terminal +24V_1 of the AC-DC flyback conversion module and the third output terminal +24V_2 of the DC-DC flyback conversion module.

[0052] In one embodiment, the state monitoring module specifically includes: a first voltage detection circuit and a second voltage detection circuit.

[0053] The input end of the first voltage detection circuit is connected to the AC-DC flyback conversion module, and the output end of the first voltage detection circuit is connected to the power supply control module.

[0054] The first voltage detection circuit is used to compare the voltage value of the first direct current signal with a first preset voltage threshold, and output a first state monitoring result to the power supply control module according to the comparison result.

[0055] like Figure 7 As shown, the first voltage detection circuit includes: a first voltage detection chip U6 and a filter capacitor C44. When the voltage value +5V1_1 of the first direct current signal output by the AC-DC flyback conversion module is lower than the first preset voltage threshold, pin 1 of the first voltage detection chip U6 outputs the first state monitoring result in the form of a fault state signal State1.

[0056] The input end of the second voltage detection circuit is connected to the DC-DC flyback conversion module, and the output end of the second voltage detection circuit is connected to the power supply control module.

[0057] The second voltage detection circuit is used to compare the voltage value of the second direct current signal with a second preset voltage threshold, and output a second state monitoring result to the power supply control module according to the comparison result.

[0058] like Figure 8As shown, the second voltage detection circuit includes: a second voltage detection chip U8 and a filter capacitor C39. When the voltage value +5V1_2 of the second DC signal output by the DC-DC flyback conversion module is lower than the second preset voltage threshold, pin 1 of the second voltage detection chip U8 outputs the second state monitoring result in the form of a fault state signal State2.

[0059] In some embodiments, the power supply control module may specifically include a computer, a processor or a server having data transmission, reception and data processing capabilities.

[0060] In one embodiment, the power supply control module determines the first power supply reliability rate of the first direct current signal, specifically including: The first step is to obtain a voltage value, a frequency value and a phase value of a first direct current signal within a preset time period.

[0061] In the second step, a first voltage fluctuation value is calculated based on the voltage value of the first direct current signal within a preset time period.

[0062] In a specific implementation, the first voltage fluctuation value is calculated based on the voltage value of the first direct current signal within a preset time period, specifically including: Firstly, the voltage value of the first direct current signal in a preset time period is subtracted from the preset voltage reference value and the absolute value is calculated to obtain a plurality of first voltage deviation values.

[0063] It can be understood that the first voltage deviation value can represent the deviation between the voltage value of the first DC signal within the preset time period and the preset voltage reference value. The larger the first voltage deviation value, the greater the deviation between the two.

[0064] Then, a first target voltage deviation value exceeding a preset voltage deviation threshold value is extracted from the plurality of first voltage deviation values.

[0065] It is understandable that if the first voltage deviation value is too large, it means that the voltage fluctuation of the first DC signal is large, which further means that the power supply stability of the AC input power supply is poor. In this embodiment, the first target voltage deviation value is a larger value after screening.

[0066] Finally, all the first target voltage deviation values ​​are averaged to calculate the first voltage fluctuation value.

[0067] In this embodiment, the first voltage fluctuation value may represent the voltage fluctuation of the AC input power source within a preset period of time.

[0068] The third step is to determine the maximum frequency value and the minimum frequency value of the frequency value of the first DC signal in the preset time period, and to obtain the first frequency fluctuation value by subtracting the maximum frequency value from the minimum frequency value of the first DC signal in the preset time period.

[0069] It can be understood that the first frequency fluctuation value can represent the frequency fluctuation of the AC input power within a preset time period.

[0070] In the fourth step, the phase values ​​of the first direct current signal in the preset time period are respectively subtracted from the preset phase reference value and the average is calculated to obtain the first phase fluctuation value.

[0071] It can be understood that the first phase fluctuation value can represent the phase fluctuation of the AC input power within a preset time period.

[0072] The fifth step is to obtain a first power supply reliability rate of the first direct current signal based on the first voltage fluctuation value, the first frequency fluctuation value and the first phase fluctuation value.

[0073] In a specific implementation, obtaining a first power supply reliability rate of a first direct current signal based on a first voltage fluctuation value, a first frequency fluctuation value, and a first phase fluctuation value specifically includes: The first voltage fluctuation value, the first frequency fluctuation value and the first phase fluctuation value are input into a pre-built power supply reliability prediction model to obtain a first power supply reliability of a first direct current signal output by the power supply reliability prediction model.

[0074] Among them, the power supply reliability prediction model is obtained after training the deep learning network model based on voltage fluctuation value samples, frequency fluctuation value samples, phase fluctuation value samples and power supply reliability samples.

[0075] It is understandable that when constructing the power supply reliability prediction model, some valid historical data can be extracted from the previous relevant historical data of the AC input power supply in the link of supplying power to the generator transmitter as sample data, and then the power supply reliability prediction model can be obtained after training the deep learning network model.

[0076] In actual applications, a data mapping table can also be established based on voltage fluctuation value samples, frequency fluctuation value samples, phase fluctuation value samples and power supply reliability rate samples, and then the first power supply reliability rate corresponding to the current first voltage fluctuation value, first frequency fluctuation value and first phase fluctuation value can be obtained from the data mapping table.

[0077] Similarly, the power supply control module determines the second power supply reliability rate of the second DC power signal, specifically including: The first step is to obtain the voltage value, frequency value and phase value of the second direct current signal within a preset time period.

[0078] The second step is to calculate a second voltage fluctuation value based on the voltage value of the second direct current signal within a preset time period.

[0079] The third step is to determine the maximum frequency value and the minimum frequency value of the second DC signal in the preset time period, and to obtain a second frequency fluctuation value by subtracting the maximum frequency value from the minimum frequency value of the second DC signal in the preset time period.

[0080] In the fourth step, the phase values ​​of the second direct current signal in the preset time period are respectively subtracted from the preset phase reference value and the average is calculated to obtain the second phase fluctuation value.

[0081] The fifth step is to obtain a second power supply reliability rate of the second DC power signal based on the second voltage fluctuation value, the second frequency fluctuation value and the second phase fluctuation value.

[0082] It can be understood that the calculation principle of the second voltage fluctuation value and the second power supply reliability rate is consistent with the calculation principle of the first voltage fluctuation value and the first power supply reliability rate mentioned above, and will not be elaborated herein.

[0083] In one embodiment, the power supply control module generates a power supply control instruction based on the first power supply reliability rate, the second power supply reliability rate and the status monitoring result, specifically including: On the one hand, if the status monitoring result shows that the operating status of the AC-DC flyback conversion module and the DC-DC flyback conversion module are both normal, the first power supply reliability rate is compared with the second power supply reliability rate, and a power supply control instruction is generated according to the comparison result.

[0084] In this case, both the AC input power supply and the DC input power supply are in normal operation. In order to improve the power supply stability of the generator transmitter, the first power supply reliability rate can be compared with the second power supply reliability rate, and the power supply with a higher power supply reliability rate can be used as the power supply for the generator transmitter.

[0085] For example, if the first power supply reliability rate is higher than the second power supply reliability rate, the power supply control instruction is to control the first switch, the third switch and the fifth switch corresponding to the AC input power supply in the parallel anti-reverse module to be closed, so that the AC input power supply can supply power to the generator transmitter. If the second power supply reliability rate is higher than the first power supply reliability rate, the power supply control instruction is to control the second switch, the fourth switch and the sixth switch corresponding to the DC input power supply in the parallel anti-reverse module to be closed, so that the DC input power supply can supply power to the generator transmitter.

[0086] On the other hand, if the status monitoring result shows that the operating status of the AC-DC flyback conversion module is abnormal or the operating status of the DC-DC flyback conversion module is abnormal, a power supply control instruction is generated according to the status monitoring result.

[0087] In this case, only one of the AC input power supply and the DC input power supply is in normal operating state. In order to ensure that the power supply of the generator transmitter is not interrupted, the power supply in normal operating state can be used to power the generator transmitter, so that the power supply in abnormal operating state can be repaired without interrupting the power supply.

[0088] Specifically, if the status monitoring result shows that the operating status of the AC-DC flyback conversion module is abnormal, the power supply control instruction is to control the second switching switch, the fourth switching switch and the sixth switching switch corresponding to the DC input power supply in the parallel anti-reverse module to close, so as to realize the DC input power supply to power the generator transmitter.

[0089] If the status monitoring result shows that the operating status of the DC-DC flyback conversion module is abnormal, the power supply control instruction is to control the first switching switch, the third switching switch and the fifth switching switch corresponding to the AC input power supply in the parallel anti-reverse module to close, so as to realize the AC input power supply to power the generator transmitter.

[0090] In actual applications, there may be a situation where the operating status of both the AC-DC flyback conversion module and the DC-DC flyback conversion module are abnormal. At this time, an early warning message can be sent to the staff's mobile terminal and the microprocessor of the generator transmitter to realize the abnormal synchronous early warning function.

[0091] Based on the same general inventive concept, the present invention also protects a generator transmitter redundant power supply method. The generator transmitter redundant power supply method provided by the present invention is described below. The generator transmitter redundant power supply method described below and the generator transmitter redundant power supply system described above can be referenced to each other.

[0092] like Fig. 9 As shown, the generator transmitter redundant power supply method provided by the embodiment of the present invention can be implemented based on the generator transmitter redundant power supply system including the AC-DC flyback conversion module, the DC-DC flyback conversion module, the parallel anti-reverse module, the state monitoring module and the power supply control module provided by the above embodiments. The method mainly includes the following steps: Step 410: Convert an AC power signal of an AC input power source into a first DC power signal through an AC-DC flyback conversion module.

[0093] Step 420: Convert the DC power signal of the DC input power supply into a second DC power signal through a DC-DC flyback conversion module.

[0094] Step 430: connect the DC output terminal of the AC-DC flyback conversion module and the DC output terminal of the DC-DC flyback conversion module in parallel through the parallel anti-reverse module and then connect them to the generator transmitter.

[0095] Step 440: Monitor the operating states of the AC-DC flyback conversion module and the DC-DC flyback conversion module according to the first DC power signal and the second DC power signal through the state monitoring module, and output the state monitoring result.

[0096] Step 450: Determine the first power supply reliability rate of the first DC power signal and the second power supply reliability rate of the second DC power signal respectively through the power supply control module, and generate and send a power supply control instruction to the parallel anti-reverse module based on the first power supply reliability rate, the second power supply reliability rate and the status monitoring result.

[0097] In one embodiment, determining the first power supply reliability rate of the first direct current signal by the power supply control module specifically includes: Obtaining a voltage value, a frequency value, and a phase value of a first direct current signal within a preset time period; Calculating a first voltage fluctuation value based on a voltage value of the first direct current signal within a preset time period; Determine a maximum frequency value and a minimum frequency value among frequency values ​​of the first direct current signal within a preset period, and make a difference between the maximum frequency value and the minimum frequency value of the first direct current signal within the preset period to obtain a first frequency fluctuation value; Subtracting the phase values ​​of the first direct current signal in a preset time period from the preset phase reference value and calculating the average, thereby obtaining a first phase fluctuation value; Based on the first voltage fluctuation value, the first frequency fluctuation value, and the first phase fluctuation value, a first power supply reliability rate of the first direct current signal is obtained.

[0098] In one embodiment, the first voltage fluctuation value is calculated based on the voltage value of the first direct current signal within a preset time period, specifically including: Subtracting the voltage value of the first direct current signal within a preset time period from the preset voltage reference value and calculating the absolute value, thereby obtaining a plurality of first voltage deviation values; Extracting a first target voltage deviation value exceeding a preset voltage deviation threshold value from a plurality of first voltage deviation values; All first target voltage deviation values ​​are averaged to calculate a first voltage fluctuation value.

[0099] In one embodiment, obtaining a first power supply reliability rate of a first direct current signal based on the first voltage fluctuation value, the first frequency fluctuation value, and the first phase fluctuation value specifically includes: Inputting the first voltage fluctuation value, the first frequency fluctuation value, and the first phase fluctuation value into a pre-built power supply reliability prediction model to obtain a first power supply reliability of a first direct current signal output by the power supply reliability prediction model; Among them, the power supply reliability prediction model is obtained after training the deep learning network model based on voltage fluctuation value samples, frequency fluctuation value samples, phase fluctuation value samples and power supply reliability samples.

[0100] In one embodiment, the power supply control module generates a power supply control instruction based on the first power supply reliability rate, the second power supply reliability rate and the status monitoring result, specifically including: If the status monitoring result shows that the operating statuses of the AC-DC flyback conversion module and the DC-DC flyback conversion module are both normal, the first power supply reliability rate is compared with the second power supply reliability rate, and a power supply control instruction is generated according to the comparison result; If the status monitoring result indicates that the operating status of the AC-DC flyback conversion module is abnormal or the operating status of the DC-DC flyback conversion module is abnormal, a power supply control instruction is generated according to the status monitoring result.

[0101] The generator transmitter redundant power supply method provided in the embodiment of the present invention can realize dual power supply redundant power supply, and the power supply control module can generate and send power supply control instructions based on the first power supply reliability rate, the second power supply reliability rate and the status monitoring result, thereby realizing accurate control of the power supply process of the generator transmitter and improving the power supply stability and reliability of the generator transmitter.

[0102] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A redundant power supply system for a generator transmitter, characterized in that: include: An AC-DC flyback conversion module is connected to an AC input power supply, and is used to convert an AC power signal of the AC input power supply into a first DC signal; A DC-DC flyback conversion module, connected to a DC input power supply, and configured to convert a DC power supply signal of the DC input power supply into a second DC power signal; A parallel anti-reverse module, used for connecting the DC output end of the AC-DC flyback conversion module and the DC output end of the DC-DC flyback conversion module in parallel and then connecting them to the generator transmitter; a state monitoring module, connected to the AC-DC flyback conversion module and the DC-DC flyback conversion module, respectively, and configured to monitor the operating states of the AC-DC flyback conversion module and the DC-DC flyback conversion module according to the first direct current signal and the second direct current signal, and output a state monitoring result; A power supply control module is respectively connected to the AC-DC flyback conversion module, the DC-DC flyback conversion module, the parallel anti-reverse module and the status monitoring module. The power supply control module is used to respectively determine a first power supply reliability rate of the first DC power signal and a second power supply reliability rate of the second DC power signal, and based on the first power supply reliability rate, the second power supply reliability rate and the status monitoring result, generate and send a power supply control instruction to the parallel anti-reverse module.

2. The generator transmitter redundant power supply system according to claim 1, characterized in that: The AC-DC flyback conversion module comprises: A first flyback conversion control circuit, a first voltage conversion circuit, a first switch circuit, a first feedback loop high voltage side circuit, and a first feedback loop low voltage side circuit; The first flyback conversion control circuit is respectively connected to the AC input power supply, the first voltage transformation circuit, the first switching circuit and the first feedback loop high-voltage side circuit; the first voltage transformation circuit is also connected to the generator transmitter; the first feedback loop high-voltage side circuit is connected to the first feedback loop low-voltage side circuit.

3. The generator transmitter redundant power supply system according to claim 1, characterized in that: The DC-DC flyback conversion module comprises: A second flyback conversion control circuit, a second voltage conversion circuit, a second switch circuit, a second feedback loop high voltage side circuit, and a second feedback loop low voltage side circuit; The second flyback conversion control circuit is respectively connected to the DC input power supply, the second voltage transformation circuit, the second switching circuit and the second feedback loop high-voltage side circuit; the second voltage transformation circuit is also connected to the generator transmitter; the second feedback loop high-voltage side circuit is connected to the second feedback loop low-voltage side circuit.

4. The generator transmitter redundant power supply system according to claim 1, characterized in that: The parallel anti-reverse module comprises: A first parallel anti-reverse circuit, a second parallel anti-reverse circuit, and a third parallel anti-reverse circuit; The input end of the first parallel anti-reverse circuit is connected to the first voltage output end of the AC-DC flyback conversion module and the first voltage output end of the DC-DC flyback conversion module respectively, and the output end of the first parallel anti-reverse circuit is connected to the microprocessor of the generator transmitter; The input end of the second parallel anti-reverse circuit is connected to the second voltage output end of the AC-DC flyback conversion module and the second voltage output end of the DC-DC flyback conversion module respectively, and the output end of the second parallel anti-reverse circuit is connected to the communication module of the generator transmitter; The input end of the third parallel anti-reverse circuit is respectively connected to the third voltage output end of the AC-DC flyback conversion module and the third voltage output end of the DC-DC flyback conversion module, and the output end of the third parallel anti-reverse circuit is connected to the relay module of the generator transmitter.

5. The generator transmitter redundant power supply system according to claim 1, characterized in that: The status monitoring module comprises: a first voltage detection circuit and a second voltage detection circuit; The input end of the first voltage detection circuit is connected to the AC-DC flyback conversion module, and the output end of the first voltage detection circuit is connected to the power supply control module; The first voltage detection circuit is used to compare the voltage value of the first DC signal with a first preset voltage threshold, and output a first state monitoring result to the power supply control module according to the comparison result; The input end of the second voltage detection circuit is connected to the DC-DC flyback conversion module, and the output end of the second voltage detection circuit is connected to the power supply control module; The second voltage detection circuit is used to compare the voltage value of the second direct current signal with a second preset voltage threshold, and output a second state monitoring result to the power supply control module according to the comparison result.

6. The generator transmitter redundant power supply system according to claim 1, characterized in that: The power supply control module determines a first power supply reliability rate of the first direct current signal, including: Acquiring a voltage value, a frequency value, and a phase value of the first direct current signal within a preset time period; Calculating a first voltage fluctuation value based on a voltage value of the first direct current signal within a preset time period; Determine a maximum frequency value and a minimum frequency value among frequency values ​​of the first DC signal within a preset time period, and obtain a first frequency fluctuation value by subtracting the maximum frequency value from the minimum frequency value of the first DC signal within the preset time period; Subtracting the phase values ​​of the first direct current signal in a preset time period from preset phase reference values ​​and calculating the average, thereby obtaining a first phase fluctuation value; A first power supply reliability rate of the first direct current signal is obtained based on the first voltage fluctuation value, the first frequency fluctuation value, and the first phase fluctuation value.

7. The generator transmitter redundant power supply system according to claim 6, characterized in that: The first voltage fluctuation value is calculated based on the voltage value of the first direct current signal within a preset time period, including: Subtracting the voltage value of the first direct current signal within a preset time period from a preset voltage reference value and calculating the absolute value, thereby obtaining a plurality of first voltage deviation values; Extracting a first target voltage deviation value exceeding a preset voltage deviation threshold value from the plurality of first voltage deviation values; All the first target voltage deviation values ​​are averaged to calculate a first voltage fluctuation value.

8. The generator transmitter redundant power supply system according to claim 6, characterized in that: Obtaining a first power supply reliability rate of the first direct current signal based on the first voltage fluctuation value, the first frequency fluctuation value, and the first phase fluctuation value includes: Inputting the first voltage fluctuation value, the first frequency fluctuation value, and the first phase fluctuation value into a pre-built power supply reliability prediction model to obtain a first power supply reliability of the first direct current signal output by the power supply reliability prediction model; Among them, the power supply reliability prediction model is obtained after training the deep learning network model based on voltage fluctuation value samples, frequency fluctuation value samples, phase fluctuation value samples and power supply reliability samples.

9. The generator transmitter redundant power supply system according to claim 1, characterized in that: The power supply control module generates a power supply control instruction based on the first power supply reliability rate, the second power supply reliability rate and the status monitoring result, including: If the status monitoring result shows that the operating states of the AC-DC flyback conversion module and the DC-DC flyback conversion module are both normal, comparing the first power supply reliability rate with the second power supply reliability rate, and generating a power supply control instruction according to the comparison result; If the status monitoring result indicates that the operating status of the AC-DC flyback conversion module is abnormal or the operating status of the DC-DC flyback conversion module is abnormal, a power supply control instruction is generated according to the status monitoring result.

10. A redundant power supply method for a generator transmitter, characterized in that: The method is based on a generator transmitter redundant power supply system including an AC-DC flyback conversion module, a DC-DC flyback conversion module, a parallel anti-reverse module, a state monitoring module and a power supply control module, and the method includes: Converting an AC power signal of an AC input power source into a first DC power signal through an AC-DC flyback conversion module; Converting a DC power signal of a DC input power source into a second DC power signal through a DC-DC flyback conversion module; The DC output end of the AC-DC flyback conversion module and the DC output end of the DC-DC flyback conversion module are connected in parallel through the parallel anti-reverse module and then connected to the generator transmitter; Monitoring the operating states of the AC-DC flyback conversion module and the DC-DC flyback conversion module according to the first DC power signal and the second DC power signal through a state monitoring module, and outputting a state monitoring result; The first power supply reliability rate of the first DC power signal and the second power supply reliability rate of the second DC power signal are respectively determined by the power supply control module, and based on the first power supply reliability rate, the second power supply reliability rate and the status monitoring result, a power supply control instruction is generated and sent to the parallel anti-reverse module.

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