Method and device for determining power of nuclear power rod power supply unit, equipment and storage medium

Abstract

The invention discloses a method, a device and equipment for determining the power of a nuclear power rod power supply unit and a storage medium. The method comprises the following steps: acquiring rectification information and load information of a load branch when the nuclear power rod power supply unit is rectified; according to the rectification information and the load information, determining the rectification time and the freewheeling current zero-crossing time; determining the follow current time according to the relation between the sum of the rectification time and the time of the zero-crossing time of the follow current and the rectification period; and determining a current effective value according to the follow current time and the load information. According to the technical scheme provided by the embodiment of the invention, the active power of the nuclear power rod power supply unit is accurately measured by accurately calculating and analyzing the current effective value at the direct current side, the defect that the active power is easily influenced by harmonic waves when being determined at the alternating current side is avoided, the error is obviously reduced, and the reliability is improved. The problem that the power measurement result of the nuclear power rod power supply unit from the alternating current side is inaccurate is solved.

Description

Technical Field

[0001] The present invention relates to the field of nuclear power plant reactor electrical technology, and in particular to a method, device, equipment and storage medium for determining the power of a nuclear power rod power supply unit. Background Art

[0002] The nuclear rod power mechanism drive system in a nuclear power plant is a regulating system used to adjust the position of the nuclear rod. It is a servo mechanism used to accurately control the movement of the nuclear rod and perform actions such as lifting, lowering, holding or quick insertion of the nuclear rod to complete the reactor startup, power adjustment, power maintenance, reaction stop and rapid shutdown in the event of an accident. The nuclear rod mechanism drive system is an important moving part of the nuclear reactor, which directly affects the normal operation and safety reliability of the reactor.

[0003] The nuclear rod mechanism drive system is powered by a nuclear rod power supply unit with a DC power supply after three-phase half-wave rectification. The load active power of a traditional nuclear rod power supply unit is usually measured directly on the output AC side of the nuclear rod power supply unit. However, since the load of the nuclear rod power supply unit has inductive components, the current waveform on the input AC side pulsates greatly, the frequency stability is not high, and the harmonic content is large, resulting in a large error in measuring its active power, and this measurement error will change with the size and nature of the load. At present, power measurement instruments on the market are all based on standard sinusoidal function waveforms for measurement, which cannot meet the accuracy requirements of active power measurement. Summary of the invention

[0004] The present invention provides a method, device, equipment and storage medium for determining the power of a nuclear power rod power supply unit, so as to solve the problem of inaccurate power measurement results of the nuclear power rod power supply unit from the AC side.

[0005] According to one aspect of the present invention, a method for determining the power of a nuclear power rod power unit is provided, comprising:

[0006] Obtaining rectification information and load information of the load branch when the nuclear power rod power unit is rectified;

[0007] Determine a rectification time and a freewheeling current zero-crossing time according to the rectification information and the load information;

[0008] Determine the freewheeling time according to the relationship between the sum of the rectification time and the freewheeling current zero-crossing time and the rectification period;

[0009] The effective value of the current is determined according to the freewheeling time and the load information.

[0010] Optionally, the nuclear power rod power supply unit includes a rectifier circuit, which is connected to a load; the rectification information includes a rectifier pulse trigger angle under the rectification state of the unit, and the load information includes load inductance, load resistance and load current initial value.

[0011] Optionally, determining the rectification time and the freewheeling current zero-crossing time according to the trigger information and the load information includes:

[0012] determining a time constant according to the load inductance and the load resistance;

[0013] The rectification time and the freewheeling current zero-crossing time are determined according to the trigger angle and the time constant.

[0014] Optionally, determining the freewheeling time according to a relationship between a sum of the rectification time and the freewheeling current zero-crossing time and a rectification period includes:

[0015] When the sum of the rectification time and the freewheeling current zero-crossing time is less than the rectification period, determining the freewheeling current zero-crossing time as the freewheeling time;

[0016] When the sum of the rectification time and the freewheeling current zero-crossing time is not less than the rectification period, the difference between the rectification period and the rectification time is determined as the freewheeling time.

[0017] Optionally, determining the effective value of the current according to the freewheeling time and the load information includes:

[0018] Determine a current effective value according to the freewheeling time and the load information;

[0019] Active power is determined according to the effective value of the current.

[0020] Optionally, determining the effective value of the current according to the freewheeling time and the load information includes:

[0021] Determining the current in the rectification phase and the current in the freewheeling phase of the unit respectively according to the freewheeling time;

[0022] The effective value of the current is determined according to the current in the rectification stage and the current in the freewheeling stage.

[0023] Optionally, after determining the active power according to the freewheeling time and the load information, the method further includes:

[0024] The total active power of the nuclear power rod power supply unit is determined according to the active power of each load branch of the nuclear power rod power supply unit.

[0025] According to another aspect of the present invention, there is provided a device for measuring power of a nuclear power rod power unit, comprising:

[0026] An acquisition module is used to acquire rectification information and load information during rectification of the unit;

[0027] A time determination module, used to determine the rectification time and the freewheeling current zero-crossing time according to the rectification information and the load information;

[0028] A freewheeling time judgment module, used to determine the freewheeling time according to the relationship between the sum of the rectification time and the freewheeling current zero-crossing time and the rectification period;

[0029] A power determination module is used to determine the active power according to the freewheeling time and the load information.

[0030] According to another aspect of the present invention, an electronic device is provided, comprising: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the method for determining the power of a nuclear power rod power supply unit described in the first aspect of the present invention.

[0031] According to another aspect of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the method for determining the power of a nuclear power rod power supply unit described in the first aspect when executed.

[0032] The technical solution provided by the embodiment of the present invention obtains the rectification information and load information of the DC side of the nuclear power rod power supply unit load when performing three-phase half-wave rectification, thereby determining the load branch rectification time and the freewheeling current zero-crossing time of the nuclear power rod power supply unit, and determining the freewheeling time on the load branch in combination with the rectification cycle, thereby calculating the effective value of the current of the load branch according to the freewheeling time, and then determining the active power of the load branch. The technical solution provided by the embodiment of the present invention realizes accurate measurement of the active power of the nuclear power rod power supply unit by accurately measuring and analyzing the effective value of the current on the DC side, avoiding the disadvantage that the AC side is easily affected by harmonics when determining the active power, significantly reducing the error, and solving the problem of inaccurate power measurement results of the nuclear power rod power supply unit from the AC side.

[0033] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0035] Figure 1 It is a flow chart of a method for determining the power of a nuclear power rod power supply unit provided according to an embodiment of the present invention;

[0036] Figure 2 A schematic diagram of a system for measuring and analyzing active power of a nuclear power rod power unit in a nuclear power plant provided by an embodiment of the present invention;

[0037] Figure 3 A waveform diagram of three-phase half-wave rectification of a load branch of a nuclear power rod power unit provided by an embodiment of the present invention;

[0038] Figure 4 is a flow chart of another method for determining the power of a nuclear power rod power supply unit provided according to an embodiment of the present invention;

[0039] Figure 5 A flow chart of another method for determining the power of a nuclear power rod power unit provided in an embodiment of the present invention;

[0040] Figure 6 A flow chart of another method for determining the power of a nuclear power rod power unit provided in an embodiment of the present invention;

[0041] Figure 7 A schematic diagram of the structure of a power measurement device for a nuclear power rod power supply unit provided by an embodiment of the present invention;

[0042] Figure 8 A schematic diagram of the structure of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0043] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only 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 should fall within the scope of protection of the present invention.

[0044] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0045] Figure 1 A flowchart of a method for determining the power of a nuclear power rod power unit provided in an embodiment of the present invention, Figure 2 A schematic diagram of a system for measuring and analyzing active power of a nuclear power rod power unit in a nuclear power plant provided by an embodiment of the present invention, Figure 3 A waveform diagram of a load branch of a nuclear power rod power unit for three-phase half-wave rectification provided by an embodiment of the present invention. This embodiment can be applied to measuring the power of a nuclear power rod power unit in a nuclear power plant. The method can be performed by a power measurement device for a nuclear power rod power unit. The power measurement device for a nuclear power rod power unit can be implemented in the form of hardware and / or software. The power measurement device for a nuclear power rod power unit can be configured in an electronic device. Figure 1 , Figure 2 and Figure 3 , the method comprising:

[0046] S110, obtaining rectification information and load information of the load branch when the nuclear power rod power unit is rectifying;

[0047] Specifically, one side of the contactor can be connected to an external power supply, and the other side is connected to a motor, which is connected to a generator through a flywheel, thereby supplying power to the entire nuclear power rod power supply unit. The ABC three-phase circuit outputted from the other side of the generator is connected to one side of an SCR (Silicon Controlled Rectifier) ​​that controls the nuclear power rod power supply unit for three-phase half-wave rectification. The other side of the SCR is connected to multiple load branches through a fuse. The load coil on the load branch allows the corresponding electromagnet to release and attract according to the current signal to achieve the lifting, lowering, holding or quick insertion of the nuclear power rod in the reactor. The circuit connecting the generator and the SCR is provided with a series-connected circuit breaker and a shutdown circuit breaker. The circuit breaker can be used to control the conduction and shutdown of the entire circuit, and the shutdown circuit breaker can be used to control the start-up and shutdown of the nuclear power rod power supply unit. The ABC three-phase circuit outputted by the generator can also be connected to other SCR control circuits to control the operation of other equipment in the nuclear power plant. In this system, a trigger module that controls SCR for three-phase half-wave rectification in a computer can output a trigger pulse signal to the SCR, thereby rectifying the three-phase AC power into DC power, and controlling the movement of the nuclear power rod by means of DC power supply; and the rectification information and load information on the load branch on the DC side of the nuclear power rod power supply unit when the nuclear power rod power supply unit performs three-phase half-wave rectification can be obtained from the computer that controls the nuclear power rod power supply unit for three-phase half-wave rectification. Among them, the rectification information can be the trigger angle of the load branch of the nuclear power rod power supply unit under the rectification state, and the load information can be the load inductance value and load resistance value on the corresponding load branch.

[0048] S120, determining the rectification time and the freewheeling current zero-crossing time according to the rectification information and the load information;

[0049] Specifically, half-wave rectification utilizes the unidirectional conductivity of a diode to convert the positive half of the input sinusoidal alternating current into direct current. Figure 3 As shown, u a 、u b and u c is the three-phase AC power that undergoes three-phase half-wave rectification on the AC side of the rectifier circuit, θ is the trigger angle when a load branch undergoes three-phase half-wave rectification, u g is the voltage of the trigger pulse output by the trigger module to the SCR, T is the rectification period when the load branch performs three-phase half-wave rectification, u d and i d They are the voltage and current input to the load coil of the load branch after rectification. Rectification time t r It can refer to the time when the diode is turned on in one cycle of three-phase half-wave rectification, corresponding to the voltage u on the load coil. dThe time when the freewheeling zero-crossing time t1 refers to the time interval from the on state to the off state of the diode during the three-phase half-wave rectification, corresponding to the current i on the load coil d The computer that controls the nuclear power rod power unit in the nuclear power plant for rectification can calculate the rectification time and the freewheeling zero-crossing time of the three-phase half-wave rectification on the load branch based on the rectification information and load information obtained.

[0050] S130, determining the freewheeling time according to the relationship between the sum of the rectification time and the freewheeling current zero-crossing time and the rectification period;

[0051] Specifically, since the load side of the nuclear power rod power unit is provided with an inductive load such as a load coil, when the current is suddenly interrupted, the magnetic field generated by the load coil will change to generate an induced electromotive force, thereby driving the current to continue to flow to form a continuous flow. The continuous flow time can be calculated by analyzing the relationship between the sum of the rectification time in a cycle on the load branch and the time when the continuous flow current crosses zero and the rectification period. Among them, the rectification period T can be obtained by formula (1):

[0052]

[0053] Wherein, f is the frequency of the AC power input to the AC side during three-phase half-wave rectification. For example, when a nuclear power plant performs three-phase half-wave rectification, the AC power input to the AC side may be an AC power with a frequency of 50 Hz, and the corresponding rectification period T is 6.667 ms.

[0054] S140, determining the effective value of the current according to the freewheeling time and the load information.

[0055] Specifically, the effective value of the current on the DC side of the load branch is calculated and analyzed based on the freewheeling time on the load branch and the load information on the corresponding load branch, so that the active power of the load branch is calculated after determining the effective value of the current on the DC side of the load branch.

[0056] The technical solution provided by the embodiment of the present invention obtains the rectification information and load information of the DC side of the nuclear power rod power supply unit when performing three-phase half-wave rectification, thereby determining the load branch rectification time and the freewheeling current zero-crossing time of the nuclear power rod power supply unit, and determining the freewheeling time on the load branch in combination with the rectification cycle, thereby calculating the effective value of the current of the load branch according to the freewheeling time, and then determining the active power of the load branch. The technical solution provided by the embodiment of the present invention realizes accurate measurement of the active power of the nuclear power rod power supply unit by accurately measuring and analyzing the effective value of the current on the DC side, avoiding the disadvantage that the AC side is easily affected by harmonics when determining the active power, significantly reducing the error, and solving the problem of inaccurate power measurement results of the nuclear power rod power supply unit from the AC side.

[0057] Optionally, based on the above embodiment, continue to refer to Figure 2 The nuclear power rod power supply unit includes a rectifier circuit, which is connected to a load; the rectifier information includes a rectifier pulse trigger angle under the rectifier state of the unit, and the load information includes a load inductance, a load resistance, and an initial value of a load current.

[0058] Specifically, the AC side of the rectifier circuit can input sinusoidal AC power, and the DC side of the rectifier circuit can be connected to the load. The load may include a load coil for controlling the movement of the nuclear power rod. The parameters of the load coil for controlling the movement of the nuclear power rod on each branch may be the same or different. The rectifier pulse trigger angle may be the trigger angle of the nuclear power rod power supply unit when performing three-phase half-wave rectification. The load inductance may be the inductance value of the load coil for controlling the movement of the nuclear power rod on the corresponding branch, the load resistance may be the resistance value of the load coil on the corresponding branch, and the load current initial value may be the current value of the corresponding branch after rectification stabilization.

[0059] Optionally, Figure 4 A flowchart of another method for determining the power of a nuclear power rod power unit provided in an embodiment of the present invention. Figure 4 The rectification time and the freewheeling current zero-crossing time are determined according to the trigger information and the load information, including:

[0060] S410, obtaining rectification information and load information of the load branch when the nuclear power rod power unit is rectifying;

[0061] S420, determining a time constant according to the load inductance and the load resistance;

[0062] Specifically, the time constant τ can be obtained by formula (2):

[0063]

[0064] Among them, L is the inductance of the load coil on the corresponding branch that controls the movement of the nuclear rod, and R is the resistance of the load coil on the corresponding branch.

[0065] S430, determining the rectification time and the freewheeling current zero-crossing time according to the trigger angle and the time constant;

[0066] Specifically, the rectification time t r It can be obtained by formula (3):

[0067]

[0068] Where θ is the trigger angle and ω is the angular frequency. The freewheeling current zero-crossing time t1 can be obtained by equation (4):

[0069]

[0070] Among them, U0 is the peak value of the phase voltage input on the AC side. In the nuclear power rod power supply unit, U0 = 212V. Let i c (t)=0, substitute the time constant τ and the trigger angle θ into the equation, and solve for the zero-crossing time t1 of the freewheeling current.

[0071] S440. Determine the freewheeling time according to the relationship between the sum of the rectification time and the zero-crossing time of the freewheeling current and the rectification period;

[0072] S450. Determine the effective current value according to the freewheeling time and the load information.

[0073] Optionally, Figure 5 is a flowchart of another method for determining the power of the nuclear power rod power supply unit provided by the embodiment of the present invention. On the basis of the above embodiment, refer to Figure 5 . Determining the freewheeling time according to the relationship between the sum of the rectification time and the zero-crossing time of the freewheeling current and the rectification period includes:

[0074] S510. Obtain the rectification information and load information of the load branch during rectification of the nuclear power rod power supply unit;

[0075] S520. Determine the time constant according to the load inductance and the load resistance;

[0076] S530. Determine the rectification time according to the trigger angle and the time constant;

[0077] S540. When the sum of the rectification time and the zero-crossing time of the freewheeling current is less than the rectification period, determine the zero-crossing time of the freewheeling current as the freewheeling time;

[0078] Specifically, if t1 + t r <T, it indicates that there is an intermittent process in rectification, and the freewheeling time t c = t1. Exemplarily, as Figure 3 shown, t1 + t r <T in this load branch, indicating that there is an intermittent process in three-phase half-wave rectification of this load branch, and the freewheeling time t c = t1.

[0079] S550. When the sum of the rectification time and the zero-crossing time of the freewheeling current is not less than the rectification period, determine the difference between the rectification period and the rectification time as the freewheeling time.

[0080] Specifically, if t1 + t r ≥T, it indicates that there is no intermittent process in rectification, and the freewheeling time t c = T - t r .

[0081] S560. Determine the effective current value according to the freewheeling time and the load information.

[0082] Optionally, Figure 6 A flowchart of another method for determining the power of a nuclear power rod power unit provided in an embodiment of the present invention. Figure 6 The effective value of the current is determined based on the freewheeling time and load information, including:

[0083] S610, obtaining rectification information and load information of the load branch when the nuclear power rod power unit is rectifying;

[0084] S620, determining a time constant according to the load inductance and the load resistance;

[0085] S630, determining the rectification time according to the trigger angle and the time constant;

[0086] S640, when the sum of the rectification time and the freewheeling current zero-crossing time is less than the rectification period, determining the freewheeling current zero-crossing time as the freewheeling time;

[0087] S650, when the sum of the rectification time and the freewheeling current zero-crossing time is not less than the rectification period, determining the difference between the rectification period and the rectification time as the freewheeling time;

[0088] S660, determining the current in the rectification stage and the current in the freewheeling stage of the unit respectively according to the freewheeling time;

[0089] Specifically, i r (t) is the current in the rectification stage, i c (t) is the current in the follow-up phase. r (t) can be obtained by formula (5):

[0090]

[0091] i c (t) can be obtained by formula (6):

[0092]

[0093] Among them, I0 is the initial value of the load current of the corresponding branch after rectification and stabilization.

[0094] S670: Determine the effective value of the current according to the current in the rectification stage and the current in the freewheeling stage.

[0095] Specifically, the effective current value I L It can be obtained by formula (7):

[0096]

[0097] S680: Determine active power according to the effective value of the current.

[0098] Specifically, the active power P on the load branch can be obtained by formula (8):

[0099] P=I L 2 R (8)

[0100] For example, if the resistance of the claw coil on a load branch is R = 14.91Ω, the inductance is L = 265mH, the trigger angle θ of the load branch during three-phase half-wave rectification is 68°, and the initial current value after rectification is stable is I0 = 3.615A. According to formula (3), the rectification time of the load branch can be calculated: Let the freewheeling current i c (t) = 0, substituting τ and θ into equation (4) to solve for the zero-crossing time of the freewheeling current t1 = 3.778 ms. At this time, t r +t1=8.334ms, t r +t1>T, so there is no intermittent process, then the continuous flow time t c =Tt r =2.111ms. According to equations (5) and (6), the current i of the corresponding rectification stage is solved respectively: r (t), the current i in the rectification stage c (t), and substitute it into equation (7) to obtain the effective value of the current: Thus, the active power of the load branch is obtained

[0101] Optionally, after determining the active power according to the freewheeling time and the load information, the method further includes:

[0102] The total active power of the nuclear power rod power supply unit is determined according to the active power of each load branch of the nuclear power rod power supply unit.

[0103] Specifically, the active power of each load branch of the nuclear power rod power unit can be obtained by the method of the above embodiment. The total power of the nuclear power rod power unit can be obtained by summing the active power of each load branch through the computer that controls the nuclear power rod power unit for rectification.

[0104] An embodiment of the present invention also provides a device for measuring the power of a nuclear power rod power unit. The device for measuring the power of a nuclear power rod power unit can execute the method for determining the active power of a nuclear power rod power unit provided by any embodiment of the present invention, and has functional modules and beneficial effects corresponding to the execution method. Figure 7 A schematic diagram of the structure of a power measurement device for a nuclear power rod power unit provided by an embodiment of the present invention. Figure 7 , the power measuring device of the nuclear power rod power unit includes:

[0105] The acquisition module 100 is used to acquire rectification information and load information during rectification of the unit;

[0106] A time determination module 200, for determining a rectification time and a freewheeling current zero-crossing time according to rectification information and load information;

[0107] A freewheeling time determination module 300, for determining the freewheeling time according to the relationship between the sum of the rectification time and the freewheeling current zero-crossing time and the rectification period;

[0108] The power determination module 400 is used to determine the active power according to the freewheeling time and the load information.

[0109] Optionally, the power measuring device of the nuclear power rod power supply unit also includes:

[0110] A rectification time determination module, used to determine a time constant according to a load inductance and a load resistance, and to determine a rectification time according to the time constant and a trigger angle;

[0111] The freewheeling current zero-crossing time determination module is used to determine the freewheeling current zero-crossing time according to the rectification time, the time constant and the trigger angle.

[0112] Optionally, the power measuring device of the nuclear power rod power supply unit also includes:

[0113] A first freewheeling time judgment module, used for determining the freewheeling current zero-crossing time as the freewheeling time when the sum of the rectification time and the freewheeling current zero-crossing time is less than the rectification period;

[0114] The second freewheeling time judgment module is used to determine the difference between the rectification period and the rectification time as the freewheeling time when the sum of the rectification time and the freewheeling current zero-crossing time is not less than the rectification period.

[0115] Optionally, the power measuring device of the nuclear power rod power supply unit also includes:

[0116] A rectification phase current determination module, used to determine the rectification phase current according to the freewheeling time;

[0117] A freewheeling phase current determination module, used to determine the freewheeling phase current according to the freewheeling time;

[0118] The current effective value determination module is used to determine the current effective value according to the current in the rectification stage and the current in the freewheeling stage.

[0119] Figure 8 This is a schematic diagram of the structure of an electronic device provided by an embodiment of the present invention. The electronic device can execute the method for determining the active power of a nuclear power rod power unit provided by any embodiment of the present invention, thereby integrating and calculating the active power of the nuclear power rod power unit. Figure 8A schematic diagram of the structure of an electronic device 10 that can be used to implement an embodiment of the present invention is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or required herein.

[0120] like Figure 8 As shown, the electronic device 10 includes at least one processor 11, and a memory connected to the at least one processor 11, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc., wherein the memory stores a computer program that can be executed by at least one processor, and the processor 11 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 12 or the computer program loaded from the storage unit 18 to the random access memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device 10 can also be stored. The processor 11, the ROM 12, and the RAM 13 are connected to each other through a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0121] A number of components in the electronic device 10 are connected to the I / O interface 15, including: an input unit 16, such as a keyboard, a mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a disk, an optical disk, etc.; and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0122] The processor 11 may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 11 executes the various methods and processes described above, such as a method for determining the active power of a nuclear power rod power unit.

[0123] In some embodiments, the method for determining the active power of a nuclear power rod power unit can be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as a storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed on the electronic device 10 via the ROM 12 and / or the communication unit 19. When the computer program is loaded into the RAM 13 and executed by the processor 11, one or more steps of the method for determining the active power of the nuclear power rod power unit described above can be executed. Alternatively, in other embodiments, the processor 11 can be configured to execute the method for determining the active power of the nuclear power rod power unit in any other appropriate manner (for example, by means of firmware).

[0124] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0125] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that when the computer program is executed by the processor, the functions / operations specified in the flow chart and / or block diagram are implemented. The computer program may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0126] In the context of the present invention, a computer-readable storage medium may be a tangible medium that may contain or store a computer program for use by or in combination with an instruction execution system, device or equipment. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0127] To provide interaction with a user, the systems and techniques described herein may be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or trackball) through which the user can provide input to the electronic device. Other types of devices may also be used to provide interaction with the user; for example, the feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form (including acoustic input, voice input, or tactile input).

[0128] The systems and techniques described herein may be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0129] A computing system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The client and server relationship is generated by computer programs running on the corresponding computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and VPS services.

[0130] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0131] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for determining the power of a nuclear power rod power unit, characterized in that: include: Obtaining rectification information and load information of the load branch when the nuclear power rod power unit is rectified; Determine a rectification time and a freewheeling current zero-crossing time according to the rectification information and the load information; Determine the freewheeling time according to the relationship between the sum of the rectification time and the freewheeling current zero-crossing time and the rectification period; The effective value of the current is determined according to the freewheeling time and the load information.

2. The method for determining the power of a nuclear power rod power unit according to claim 1, characterized in that: The nuclear power rod power supply unit includes a rectifier circuit, which is connected to a load; the rectification information includes a rectifier pulse trigger angle under the rectification state of the unit, and the load information includes a load inductance, a load resistance and an initial value of a load current.

3. The method for determining the power of a nuclear power rod power unit according to claim 2, characterized in that: Determining the rectification time and the freewheeling current zero-crossing time according to the trigger information and the load information includes: determining a time constant according to the load inductance and the load resistance; The rectification time and the freewheeling current zero-crossing time are determined according to the trigger angle and the time constant.

4. The method for determining the power of a nuclear power rod power unit according to claim 1, characterized in that: Determining the freewheeling time according to the relationship between the sum of the rectification time and the freewheeling current zero-crossing time and the rectification period includes: When the sum of the rectification time and the freewheeling current zero-crossing time is less than the rectification period, determining the freewheeling current zero-crossing time as the freewheeling time; When the sum of the rectification time and the freewheeling current zero-crossing time is not less than the rectification period, the difference between the rectification period and the rectification time is determined as the freewheeling time.

5. The method for determining the power of a nuclear power rod power unit according to claim 1, characterized in that: Determining the effective value of the current according to the freewheeling time and the load information includes: Determine a current effective value according to the freewheeling time and the load information; Active power is determined according to the effective value of the current.

6. The method for determining the power of a nuclear power rod power unit according to claim 5, characterized in that: Determining the effective value of the current according to the freewheeling time and the load information includes: Determining the current in the rectification phase and the current in the freewheeling phase of the unit respectively according to the freewheeling time; The effective value of the current is determined according to the current in the rectification stage and the current in the freewheeling stage.

7. The method for determining the power of a nuclear power rod power unit according to claim 1, characterized in that: After determining the active power according to the freewheeling time and the load information, the method further includes: The total active power of the nuclear power rod power supply unit is determined according to the active power of each load branch of the nuclear power rod power supply unit.

8. A device for measuring the power of a nuclear power rod power unit, characterized in that: include: An acquisition module is used to acquire rectification information and load information during rectification of the unit; A time determination module, used to determine the rectification time and the freewheeling current zero-crossing time according to the rectification information and the load information; A freewheeling time judgment module, used to determine the freewheeling time according to the relationship between the sum of the rectification time and the freewheeling current zero-crossing time and the rectification period; A power determination module is used to determine the active power according to the freewheeling time and the load information.

9. An electronic device, characterized in that: The electronic device comprises: one or more processors; a storage device for storing one or more programs, When the one or more programs are executed by the one or more processors, the one or more processors implement the method for determining the power of a nuclear power rod power supply unit as described in any one of claims 1-7.

10. A storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, it implements the method for determining the power of a nuclear power rod power supply unit as described in any one of claims 1-7.

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