Control rod position detector synchronous power supply system and method and related equipment

Abstract

The application provides a control rod position detector synchronous power supply system and method and related equipment, comprising: a plurality of detector power supply cabinets and clock signal lines, each detector power supply cabinet comprising a power supply module and a sine wave generator group connected in sequence, the sine wave generator group comprising a plurality of parallel sine wave generators, a phase synchronization module being arranged on another branch of each sine wave generator, the module being connected with all clock signal lines; the sine wave generator is used for receiving a phase synchronization signal and providing a sine type excitation voltage to the control rod position detector based on the phase synchronization signal; the phase synchronization module is used for receiving an alternative clock signal in all clock signal lines and determining the phase synchronization signal in the alternative clock signal according to a preset signal determination rule and providing the phase synchronization signal to the sine wave generator; the embodiment of the application can solve the problems of inaccurate measurement of the rod position and frequent jumping of the measurement rod position caused by different frequencies and different phases of the power supply of the plurality of rod position detectors.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of nuclear power plant commissioning, and in particular to a control rod position detector synchronous power supply system and method and related equipment. BACKGROUND

[0002] The control rod is used for the reactivity control of the reactor core and provides shutdown margin, which is crucial to the safety of the reactor. The real position of the control rod in the reactor is monitored by a rod position measurement system, and the rod position detector includes a primary winding, a plurality of secondary winding induction windings and an auxiliary winding. A magnetic drive rod moves in the multiple sets of windings, and the drive rod position is calculated by the induced voltage of the winding to obtain the control rod position.

[0003] In the related art, a plurality of rod position detectors are installed on the same nuclear reactor. When the excitation voltage of the primary winding of each rod position detector has different frequencies and different phases, the amplitude of the induced voltage of the secondary winding of the rod position detector will fluctuate greatly, thereby affecting the stability and accuracy of the control rod position measurement. SUMMARY

[0004] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a control rod position detector synchronous power supply system and method and related equipment, which can solve the problem of inaccurate measurement of rod position and frequent jump of rod position caused by different frequencies and different phases of power supply of multiple rod position detectors.

[0005] In a first aspect, the embodiments of the present application provide a control rod position detector synchronous power supply system for supplying power to a control rod position detector, comprising:

[0006] A plurality of detector power supply cabinets and clock signal lines, each of the detector power supply cabinets includes a power supply module and a sine wave generator group in cascade, the sine wave generator group includes a plurality of parallel sine wave generators, each of the sine wave generators is used to provide excitation voltage to the corresponding control rod position detector, and a phase synchronization module is arranged on another branch of each of the sine wave generators, and the phase synchronization module is connected with all the clock signal lines;

[0007] The sine wave generator is used to receive the phase synchronization signal of the phase synchronization module, and provide a sine excitation voltage to the control rod position detector based on the phase synchronization signal;

[0008] The phase synchronization module is used to receive alternative clock signals in all the clock signal lines, and determine a phase synchronization signal in the alternative clock signals according to a preset signal determination rule and provide the phase synchronization signal to the sine wave generator; wherein the alternative clock signal in each of the clock signal lines is from a pulse signal sent by the corresponding detector power supply cabinet.

[0009] In some embodiments, each of the power supply modules of the power cabinet of the primary winding of the detector comprises a first power supply module and a second power supply module connected in parallel, the first power supply module is configured as an AC power supply module or a DC power supply module, and the second power supply module is configured as an AC power supply module or a DC power supply module.

[0010] The AC power supply module comprises an AC power supply, an AC transformer and a first diode connected in sequence, the AC transformer is used for reducing the voltage output by the AC power supply and outputting a DC voltage to the sine wave generator, the anode of the first diode is electrically connected to the anode of the AC power supply, and the cathode of the first diode is electrically connected to the cathode of the AC power supply.

[0011] The DC power supply module comprises a DC power supply, a DC transformer and a second diode connected in sequence, the DC transformer is used for reducing the voltage output by the DC power supply and outputting a DC voltage to the sine wave generator, the anode of the second diode is electrically connected to the anode of the DC power supply, and the cathode of the second diode is electrically connected to the cathode of the DC power supply.

[0012] In some embodiments, the phase synchronization module comprises a clock signal voter and a voltage controlled oscillator connected in sequence, the signal voter is connected to each of the clock signal lines, the signal voter is used for determining one of the phase synchronization signals from the multiple alternative clock signals according to the signal determination rule, and sending the phase synchronization signal to the voltage controlled oscillator, so that the voltage controlled oscillator generates a voltage signal with the same phase and frequency as the phase synchronization signal.

[0013] In some embodiments, the phase synchronization module comprises a clock signal voter and a voltage controlled oscillator connected in sequence, the signal voter is connected to each of the clock signal lines, the signal voter is used for determining one of the phase synchronization signals from the multiple alternative clock signals according to the signal determination rule, and sending the phase synchronization signal to the voltage controlled oscillator, so that the voltage controlled oscillator generates a voltage signal with the same phase and frequency as the phase synchronization signal.

[0014] In some embodiments, a phase discriminator is further arranged between the clock signal voter and the voltage controlled oscillator, a feedback branch is further arranged between the phase discriminator and the output end of the voltage controlled oscillator, the phase discriminator receives the excitation voltage output by the voltage controlled oscillator and the phase synchronization signal through the feedback branch, and adjusts the excitation voltage according to the phase synchronization signal so that the phase and frequency of the excitation voltage are the same as those of the phase synchronization signal.

[0015] In a second aspect, the embodiments of the present application provide a method for synchronously supplying power to a control rod position detector, applied to the control rod position detector synchronous power supply system as described in the first aspect, comprising:

[0016] controlling each detector power cabinet to send a corresponding pulse signal to a corresponding clock signal line as an alternative clock signal in the clock signal line;

[0017] acquiring, by a phase synchronization module, the alternative clock signal in each clock signal line, and determining a phase synchronization signal from a plurality of alternative clock signals according to a preset signal determination rule;

[0018] controlling, based on the phase synchronization signal, a sine wave generator to process a direct current voltage output by a transformer to provide an excitation voltage with the same frequency and phase to each control rod position detector.

[0019] In some embodiments, the acquiring, by a phase synchronization module, the alternative clock signal in each clock signal line, and determining a phase synchronization signal from a plurality of alternative clock signals according to a preset signal determination rule comprises:

[0020] acquiring a preset detector power cabinet priority sequence;

[0021] based on the detector power cabinet priority sequence, searching in a plurality of alternative clock signals to determine an alternative clock signal with the highest priority as the phase synchronization signal.

[0022] In some embodiments, the controlling, based on the phase synchronization signal, a sine wave generator to process a direct current voltage output by a transformer to provide an excitation voltage with the same frequency and phase to each control rod position detector comprises:

[0023] controlling, based on the phase synchronization signal, a voltage control oscillator to generate a voltage signal;

[0024] adjusting, based on a phase detector and the phase synchronization signal, the voltage signal to make the phase and frequency of the voltage signal equal to those of the phase synchronization signal;

[0025] controlling, based on the voltage signal, the sine wave generator to process the direct current voltage output by the transformer to provide an excitation voltage with the same frequency and phase to each control rod position detector.

[0026] In some embodiments, after the sinusoidal wave generator processes the direct current voltage output by the transformer based on the phase synchronization signal to provide the same frequency and phase excitation voltage to each control rod position detector, the method further comprises:

[0027] According to the preset transmission frequency, the power supply cabinet of each detector sends a corresponding pulse signal to the corresponding clock signal line to update the alternative clock signal in the clock signal line;

[0028] The phase synchronization module obtains the updated alternative clock signal in each clock signal line, and determines one phase synchronization signal from the plurality of updated alternative clock signals according to a preset signal determination rule.

[0029] Based on the phase synchronization signal, the sinusoidal wave generator processes the direct current voltage output by the transformer to provide the same frequency and phase excitation voltage to each control rod position detector.

[0030] In a third aspect, the embodiments of the present application provide a control rod position detection device, comprising the control rod position detector synchronous power supply system and a plurality of control rod position detectors according to the first aspect.

[0031] The plurality of control rod position detectors are uniformly arranged on the detection plane; wherein the positions for arranging the control rod position detectors in the detection plane are detector sites.

[0032] In the detection area of the detection plane, the adjacent alternating magnetic field corresponding to each detector site is zero; wherein the adjacent alternating magnetic field is the alternating magnetic field synthesized by the control rod position detectors adjacent to the detector site at the detector site.

[0033] In some embodiments, the control rod position detector comprises a primary winding and an auxiliary winding, the primary winding is used to generate an alternating magnetic field according to the excitation voltage provided by the sinusoidal wave generator, and an adjustment loop is further included between the sinusoidal wave generator and the primary winding, the auxiliary winding is connected to the adjustment loop, and is used to generate a feedback current according to the alternating magnetic field and send the feedback current to the adjustment loop, so that the adjustment loop adjusts the power supply current of the primary winding according to the feedback current.

[0034] In some embodiments, a reverse power supply switch is arranged inside the rod position detector, the reverse power supply switch is used to control the reverse power supply of the rod position detector, so that the control rod position detector generates an opposite alternating magnetic field.

[0035] In a fourth aspect, an electronic device is provided, which comprises a memory and a processor. The memory stores a computer program. The processor executes the computer program to implement the method for synchronously supplying power to a control rod position detector according to any one of the embodiments of the second aspect of the present application.

[0036] In a fifth aspect, a computer readable storage medium is provided, which stores a program. The program is executed by a processor to implement the method for synchronously supplying power to a control rod position detector according to any one of the embodiments of the second aspect of the present application.

[0037] The control rod position detector synchronous power supply system according to the embodiments of the present application has at least the following beneficial effects:

[0038] The control rod position detector synchronous power supply system according to the embodiments of the present application comprises a plurality of detector power supply cabinets and clock signal lines. Each detector power supply cabinet comprises a power supply module and a sine wave generator group connected in cascade. The sine wave generator group comprises a plurality of parallel sine wave generators. Each sine wave generator is configured to provide excitation voltage to a corresponding control rod position detector. A phase synchronization module is arranged on another branch of each sine wave generator. The phase synchronization module is connected with all clock signal lines. The sine wave generator is configured to receive a phase synchronization signal of the phase synchronization module and provide sine-type excitation voltage to the control rod position detector based on the phase synchronization signal. The phase synchronization module is configured to receive alternative clock signals in all clock signal lines and determine a phase synchronization signal from the alternative clock signals according to a preset signal determination rule and provide the phase synchronization signal to the sine wave generator. The alternative clock signal in each clock signal line is from a pulse signal sent by a corresponding detector power supply cabinet.

[0039] The present application provides a plurality of detector power supply cabinets and clock signal lines. Each detector power supply cabinet internally comprises a power supply module and a sine wave generator group. The sine wave generator group comprises a plurality of parallel sine wave generators. Each sine wave generator is responsible for providing excitation voltage to a corresponding control rod position detector. A phase synchronization module is arranged on another branch of each sine wave generator. The phase synchronization module receives alternative clock signals from various clock signal lines and selects one of the alternative clock signals as a phase synchronization signal according to a preset signal determination rule, and then provides the phase synchronization signal to the sine wave generator. After receiving the phase synchronization signal, the sine wave generator provides sine-type excitation voltage to the control rod position detector based on the signal. Since all sine wave generators receive the same phase synchronization signal, they can ensure that the excitation voltage provided to the corresponding control rod position detector is of the same frequency and phase. In this way, the present application solves the problem of control rod position measurement error caused by different frequencies and different phase excitation voltages in the prior art.

[0040] Additional aspects and advantages of the present application will be partially apparent and partially described in the following description. BRIEF DESCRIPTION OF DRAWINGS

[0041] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the references to the figures, in which:

[0042] Figure 1 A control rod position detector working principle diagram provided by an embodiment of the present application;

[0043] Figure 2 A control rod position detector synchronous power supply system schematic diagram provided by an embodiment of the present application;

[0044] Figure 3 Another control rod position detector synchronous power supply system schematic diagram provided by an embodiment of the present application;

[0045] Figure 4 Another control rod position detector synchronous power supply system schematic diagram provided by an embodiment of the present application;

[0046] Figure 5 Another control rod position detector synchronous power supply system schematic diagram provided by an embodiment of the present application;

[0047] Figure 6 A control rod position detector synchronous power supply method flowchart provided by an embodiment of the present application;

[0048] Figure 7 Another control rod position detector synchronous power supply method flowchart provided by an embodiment of the present application;

[0049] Figure 8 Another control rod position detector synchronous power supply method flowchart provided by an embodiment of the present application;

[0050] Figure 9 Another control rod position detector synchronous power supply method flowchart provided by an embodiment of the present application;

[0051] Figure 10 A control rod detection device schematic diagram provided by an embodiment of the present application;

[0052] Figure 11 Another control rod detection device schematic diagram provided by an embodiment of the present application;

[0053] Figure 12 A hardware structure schematic diagram of an electronic device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0054] The embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for the purpose of explaining the present application, and cannot be understood as a limitation of the present application.

[0055] In the description of the present application, the meaning of one or more is one or more, the meaning of multiple is two or more, greater than, less than, more than, etc. are understood as not including the number, above, below, within, etc. are understood as including the number. If it is described as first, second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0056] In the description of the present application, it is necessary to understand that the orientation description, such as up, down, left, right, front, back, etc. Indicated orientation or position relationship is based on the orientation or position relationship shown in the drawings, only for the purpose of describing the present application and simplifying the description, and is not intended to indicate or imply that the device or element indicated must have a specific orientation, be constructed and operated in a specific orientation, therefore cannot be understood as a limitation of the present application.

[0057] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0058] In the description of the present application, it should be noted that, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. Should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above words in the present application in conjunction with the specific content of the technical solution. In addition, the identification of the specific steps in the following does not represent the limitation of the order and execution logic of the steps, and the execution order and execution logic between the steps should be understood and inferred with reference to the content expressed in the embodiments.

[0059] Control rods are used for reactivity control of the reactor core and provide shutdown margin, which is critical for reactor safety. The true position of control rods in the reactor is monitored by the rod position indication system (RPI). The control rod assembly is connected with a drive rod, and the rod position detector of the RPI measures the position of the drive rod, thereby indirectly determining the position of the control rod assembly in the core.

[0060] The principle of the control rod position detector is shown in Fig. 1, and the drive rod with magnetism moves in multiple groups of windings. The binary signal ("0" or "1") representing the position of the drive rod is obtained by processing the induced voltage of the windings by the RPI system, and the position of the drive rod is obtained by calculating the signal, thereby obtaining the control rod position. Figure 1

[0061] According to the working principle of the rod position detector, the rod position detector includes a primary winding (primary winding), multiple secondary windings (secondary windings) and an auxiliary winding. The primary winding is excited by alternating current, and the size of the induced voltage of the secondary winding is related to the position of the control rod drive rod in the detector. The main function of the auxiliary winding is to serve as a feedback control to adjust the supply current of the primary winding. The influencing factors of the induced voltage of the secondary winding of the RPI rod position detector include the quality of the excitation voltage of the primary winding of the rod position detector body and the excitation of the primary winding near the rod position detector. It is known that multiple RPI rod position detectors are installed on the same nuclear reactor. When the excitation voltages of the primary windings of the rod position detectors have different frequencies and different phases, the amplitude of the induced voltage of the secondary winding of the rod position detector will fluctuate greatly, thereby affecting the stability and accuracy of the control rod position measurement.

[0062] ​In the prior art, the 220V AC power supply of a nuclear power plant is often used as the upstream power supply of a detector, the power supply current is adjusted by a transformer and a current conditioning circuit to supply power to a rod position detector, or an AC power supply or a DC power supply of the nuclear power plant is converted into DC power by an AC / DC transformer, the DC power generates a sine wave through oscillation current, and the sine wave is provided to the detector through an adjustment circuit. However, for the transformer voltage reduction and amplitude modulation power supply scheme, the detectors at different positions in the nuclear power plant are supplied with power by different cabinets, and the upstream power supply of the cabinets comes from different AC power supplies. The AC power supplies cannot be the same frequency and in phase, so the primary winding excitation voltage of each detector cannot be the same frequency and in phase. For the DC oscillation excitation and amplitude modulation power supply scheme, the power supply start time of each detector is different, and there is always a difference in electrical parameters between the electronic components constituting the oscillation circuit. The primary winding excitation voltage of each detector cannot be the same frequency and in phase. Because the two existing technologies cannot make the primary winding power supply of the detector the same frequency and in phase, unstable electromagnetic interference inevitably exists between the core detectors, which causes the secondary winding induced voltage to fluctuate, and further causes the control rod position measurement to jump unexpectedly.

[0063] Based on this, the application constructs a control rod position detector synchronous power supply system. A plurality of detector power supply cabinets and clock signal lines are arranged. Each detector power supply cabinet internally includes a power supply module and a sine wave generator group. The sine wave generator group is composed of a plurality of parallel sine wave generators. Each sine wave generator is responsible for providing excitation voltage to the corresponding control rod position detector. Another branch of each sine wave generator is provided with a phase synchronization module. The phase synchronization module receives alternative clock signals from each clock signal line and selects one as a phase synchronization signal according to a preset signal determination rule, and then provides the phase synchronization signal to the sine wave generator. After receiving the phase synchronization signal, the sine wave generator provides sine-type excitation voltage to the control rod position detector. Because all sine wave generators receive the same phase synchronization signal, it can be ensured that the excitation voltage provided by them to the corresponding control rod position detector is the same frequency and in phase. In this way, the application solves the control rod position measurement error problem caused by different frequencies and different phase excitation voltages in the prior art.

[0064] Please refer to Figure 2 , Figure 2 The control rod position detector synchronous power supply system provided by the embodiment of the application is shown in the schematic diagram, which includes:

[0065] A plurality of detector power supply cabinets 1000 and clock signal lines, each detector power supply cabinet 1000 includes a power supply module 1100, a sine wave generator group 1200 in cascade, the sine wave generator group includes a plurality of parallel sine wave generators 1210, each sine wave generator 1210 is used for providing excitation voltage to the corresponding control rod position detector 2000, a phase synchronization module 1220 is arranged on another branch of each sine wave generator 1210, and the phase synchronization module 1220 is connected with all clock signal lines;

[0066] The sine wave generator 1210 is used for receiving the phase synchronization signal of the phase synchronization module 1220, and providing the sine excitation voltage to the control rod position detector 2000 based on the phase synchronization signal;

[0067] The phase synchronization module 1220 is used for receiving the alternative clock signal in all clock signal lines, and determining the phase synchronization signal in the alternative clock signal according to a preset signal determination rule and providing the phase synchronization signal to the sine wave generator 1210; wherein the alternative clock signal in each clock signal line is from the pulse signal sent by the corresponding detector power supply cabinet 1000.

[0068] Wherein, the main function of the power supply module 1100 is to convert the external power supply into voltage and current suitable for the sine wave generator group 1200. The sine wave generator group 1200 is composed of a plurality of parallel sine wave generators 1210, which is located behind the power supply module 1100. The sine wave generator 1210 is a single component in the sine wave generator group 1200, which is responsible for generating a sine wave excitation voltage. These sine wave generators 1210 work in parallel, and each generator 1210 corresponds to a control rod position detector 2000. The sine wave generator 1210 receives the phase synchronization signal from the phase synchronization module 1220, and generates a sine wave excitation voltage with the same frequency and phase according to the signal, to ensure that all detectors receive synchronized excitation voltage.

[0069] The phase synchronization module 1220 is located on another branch of the sine wave generator 1210, and its core function is to ensure that the excitation voltage generated by all sine wave generators 1210 has the same phase. The phase synchronization module 1220 receives the alternative clock signal from each clock signal line, and selects a suitable clock signal as the phase synchronization signal according to the preset signal determination rule. This phase synchronization signal is used to guide the sine wave generator 1210 to generate excitation voltage, so as to realize the synchronization of excitation voltage of all control rod position detectors.

[0070] The clock signal line connects each detector power supply cabinet 1000 and transmits the pulse signals sent by each cabinet. These pulse signals represent the alternative clock signals in the clock signal line corresponding to each cabinet and are the basis for phase synchronization by the phase synchronization module 1220. The clock signal line ensures that different cabinets can share the same time reference, which is crucial for achieving synchronization of the field voltage throughout the system.

[0071] As can be seen from the accompanying drawings, each of the cabinets A, B, C, and D includes a power supply module, a sine wave generator group, and a phase synchronization module, which are connected to each other through the clock signal line. The phase synchronization module 1220 of each cabinet receives clock signals from the clock signal line and selects one as a phase synchronization signal to ensure that the field voltage generated by the sine wave generator 1210 of the cabinet is synchronized with other parts of the system. In this way, no matter where the control rod position detector 2000 is located in the reactor, it can receive stable and synchronized field voltage, thereby improving the accuracy and reliability of the measurement.

[0072] In some embodiments, the power supply module of each detector primary winding power supply cabinet includes a first power supply module and a second power supply module connected in parallel, the first power supply module is configured as an AC power supply module or a DC power supply module, and the second power supply module is configured as an AC power supply module or a DC power supply module.

[0073] Referring to Figure 3 In some embodiments, the first power supply module is an AC power supply module 1110, which includes an AC power supply 1111, an AC power supply 1112, and a first diode 1113 connected in sequence. The AC power supply 1112 is used to step down the voltage output by the AC power supply 1111 and output a DC voltage to the sine wave generator. The positive electrode of the first diode 1113 is electrically connected to the positive electrode of the AC power supply 1111, and the negative electrode of the first diode 1113 is electrically connected to the negative electrode of the AC power supply 1111.

[0074] Referring to Figure 3 In some embodiments, the first power supply module is a DC power supply module 1120, which includes a DC power supply 1121, a DC transformer 1122, and a second diode 1123 connected in sequence. The DC transformer 1122 is used to step down the voltage output by the DC power supply 1121 and output a DC voltage to the sine wave generator. The positive electrode of the second diode 1123 is electrically connected to the positive electrode of the DC power supply 1121, and the negative electrode of the second diode 1123 is electrically connected to the negative electrode of the DC power supply 1121.

[0075] The AC power supply module 1110 is composed of three main parts: AC power supply 1111, AC power supply 1112 and first diode 1113. The AC power supply 1111 is responsible for receiving external AC power supply and providing it to the AC power supply 1112. The role of the AC power supply 1112 is to step down the voltage output by the AC power supply 1111 and output the processed DC voltage to the sine wave generator. The first diode 1113 here plays a protective role, with its positive and negative poles electrically connected to the positive and negative poles of the AC power supply 1111, ensuring one-way current flow and preventing reverse current flow, thereby protecting the safety of the circuit.

[0076] The DC power supply module 1120 is also composed of three main parts: DC power supply 1121, DC transformer 1122 and second diode 1123. The DC power supply 1121 is responsible for receiving external DC power supply and providing it to the DC transformer 1122. The role of the DC transformer 1122 is to step down the voltage output by the DC power supply 1121 and output the processed DC voltage to the sine wave generator. The second diode 1123 here also plays a protective role, with its positive and negative poles electrically connected to the positive and negative poles of the DC power supply 1121, ensuring one-way current flow and preventing reverse current flow.

[0077] In combination with the drawings, it can be seen that the AC power supply module 1110 and the DC power supply module 1120 of the power supply module are connected in parallel. This configuration allows the system to continue to provide stable DC voltage to the sine wave generator through the other module when either the AC or DC power supply module fails. The sine wave generator requires stable DC voltage to generate a sine wave voltage for excitation control rod position detector.

[0078] Through this design, not only the reliability of the power supply is improved, but also the safety of the circuit is protected by using diodes to prevent reverse current flow. This redundant power supply strategy is crucial for critical infrastructure such as nuclear power plants, as it ensures that the system can continue to operate stably even in the event of partial equipment failure.

[0079] Please refer to Figure 4 In some embodiments, the phase synchronization module 1220 includes a clock signal voter 1222 and a voltage-controlled oscillator 1221 connected in sequence, the signal voter 1222 is connected to each clock signal line, and the signal voter 1222 is used to determine a phase synchronization signal from a plurality of candidate clock signals according to a signal determination rule, and send the phase synchronization signal to the voltage-controlled oscillator 1221, so that the voltage-controlled oscillator 1221 generates a voltage signal with the same phase and frequency as the phase synchronization signal.

[0080] The clock signal voter 1222 receives the candidate clock signals from the multiple clock signal lines. These candidate clock signals are the pulse signals sent by the individual probe power supply cabinets, representing different clock sources. The clock signal voter 1222 compares and selects the most appropriate phase synchronization signal according to a pre-set signal determination rule. This rule can be based on signal strength, stability, or other parameters. The selected phase synchronization signal is then sent to the voltage-controlled oscillator 1221.

[0081] The voltage-controlled oscillator 1221 receives the phase synchronization signal from the clock signal voter 1222. The function of the voltage-controlled oscillator 1221 is to generate a voltage signal with the same phase and frequency as the received phase synchronization signal. This voltage signal will be used as the reference signal for the sine wave generator 1210, guiding it to generate the field voltage.

[0082] With this design, even in a complex electromagnetic environment such as a nuclear power plant, the field voltage synchronization of the control rod position probe can be ensured, thereby improving the accuracy and reliability of control rod position measurement. This synchronous power supply system is crucial for the safe operation of nuclear power plants, as it directly affects the accurate monitoring of control rod position, and thus the control and safety of the reactor.

[0083] Please refer to Figure 5 In some embodiments, a phase detector 1223 is also provided between the clock signal voter 1222 and the voltage-controlled oscillator 1221, and a feedback branch is also provided between the phase detector 1223 and the output of the voltage-controlled oscillator 1221, forming a phase-locked loop. The phase detector 1223 receives the field voltage output by the voltage-controlled oscillator and the phase synchronization signal through the feedback branch, and adjusts the field voltage so that its phase and frequency are the same as those of the phase synchronization signal.

[0084] The clock signal voter 1222 serves as the input part of the phase-locked loop structure. The clock signal voter 1222 receives candidate clock signals from multiple clock signal lines. These signals represent different clock sources. The clock signal voter 1222 selects the most appropriate phase synchronization signal according to a pre-set signal determination rule, and sends this signal to the subsequent phase detector 1223.

[0085] The phase detector 1223 is located between the clock signal voter 1222 and the voltage-controlled oscillator 1221. The function of the phase detector 1223 is to compare the received phase synchronization signal with the field voltage output by the voltage-controlled oscillator 1221. The phase detector 1223 measures the phase difference between the two signals and adjusts the phase of the field voltage based on this phase difference, to ensure that the phase and frequency of the field voltage are the same as those of the phase synchronization signal.

[0086] The voltage-controlled oscillator 1221 serves as the output part of the phase-locked loop structure, and generates the excitation voltage according to the adjustment of the phase detector 1223. The output end of the voltage-controlled oscillator 1221 is connected to the input end of the phase detector 1223, forming a feedback branch. This feedback branch allows the phase detector 1223 to monitor the phase and frequency of the excitation voltage in real time and make necessary adjustments.

[0087] Through this phase-locked loop structure, the system can accurately synchronize the phase and frequency of the excitation voltage, ensuring that all control rod position detectors receive excitation voltages that are completely synchronized. This precise synchronization is crucial for improving the stability and accuracy of control rod position measurement, helping to improve the safety and reliability of nuclear power plants.

[0088] Referring to Figure 6 The control rod position detector winding synchronization power supply method provided by the embodiments of the present application, applied to the above-mentioned control rod position detector synchronization power supply system, can include, but is not limited to, the following steps 601 to 603:

[0089] Step 601: Control each detector power supply cabinet to send a corresponding pulse signal to the corresponding clock signal line as an alternative clock signal in the clock signal line.

[0090] Step 602: Obtain the alternative clock signal in each clock signal line through the phase synchronization module, and determine a phase synchronization signal among the multiple alternative clock signals according to a preset signal determination rule.

[0091] Step 603: Based on the phase synchronization signal, control the sine wave generator to process the direct current voltage output by the transformer, so as to provide the same frequency and phase excitation voltage to each control rod position detector.

[0092] In step 601 of some embodiments, each detector power supply cabinet is configured to send a pulse signal to its corresponding clock signal line. These pulse signals serve as alternative clock signals on the clock signal line, providing a basis for subsequent phase synchronization. The pulse signal generated by each power supply cabinet has a specific frequency and phase, representing the clock signal of that cabinet.

[0093] In step 602 of some embodiments, a phase synchronization module is used to receive and process the alternative clock signals from the clock signal lines. The phase synchronization module first acquires the alternative clock signals, and then selects a most suitable phase synchronization signal from the multiple alternative signals according to pre-set signal determination rules. The pre-set rules can consider the strength, stability or other relevant parameters of the signals to ensure that the selected phase synchronization signal can best guarantee the synchronization of the power supply. The selected phase synchronization signal will be used to guide the subsequent excitation voltage generation.

[0094] In step 603 of some embodiments, after the phase synchronization signal is determined, a sinusoidal wave generator is controlled to process the DC voltage output by the transformer to generate the excitation voltage. The sinusoidal wave generator adjusts its output according to the frequency and phase requirements of the phase synchronization signal to ensure that the excitation voltage provided to each control rod position detector has the same frequency and phase. This process is achieved by a voltage-controlled oscillator inside the sinusoidal wave generator, which adjusts its output according to the phase synchronization signal to generate the required excitation voltage.

[0095] Through steps 601 to 603, the method of the present application can ensure that multiple control rod position detectors receive synchronized excitation voltage, thereby improving the accuracy and reliability of control rod position measurement in nuclear power plants. This synchronized power supply method is crucial for the safe operation of nuclear power plants, as it directly affects the accurate monitoring of control rod position and thus the control and safety of the reactor.

[0096] Please refer to Figure 7 In some embodiments, step 602 can include, but is not limited to, steps 701 to 702:

[0097] Step 701, acquire a pre-set detector power supply cabinet priority sequence.

[0098] Step 702, based on the detector power supply cabinet priority sequence, search among the multiple alternative clock signals to determine a highest-priority alternative clock signal as the phase synchronization signal.

[0099] In step 701 of some embodiments, the detector power supply cabinet priority sequence pre-defines the priority of each detector power supply cabinet. This priority sequence is determined based on factors such as power supply reliability, historical performance, geographical location or other strategic considerations. For example, cabinet A can be given the highest priority because of its high reliability and proximity to a key control rod position detector. The priority sequence can be stored in memory or hard-coded in the firmware of the control as a constant or configuration parameter.

[0100] In step 702 of some embodiments, after the preset priority sequence is obtained, this step involves searching among the multiple alternative clock signals to determine the one with the highest priority. This process ensures that the best clock signal can be selected, thereby improving the stability and reliability of the entire synchronized power supply.

[0101] For example, the phase synchronization module checks each cabinet-provided alternative clock signal according to the priority sequence list. If the clock signal provided by the cabinet A with the highest priority is normal, this signal will be selected as the phase synchronization signal. If the signal of the cabinet A with the highest priority is lost or below the expected performance, the search will continue according to the priority sequence to select the signal provided by the cabinet with the next priority. For example, if the signal of the cabinet A is lost or unstable, the signal of the cabinet B will be automatically switched to. If the signal of the cabinet B also does not meet the requirements, the search will continue until a signal that meets the requirements is found.

[0102] Through steps 701 and 702, the method of the present application ensures that the best alternative clock signal can be quickly and accurately selected as the phase synchronization signal even when some power supply cabinets or signal paths have problems. This selection mechanism not only improves the system robustness but also ensures that the control rod position detector can continuously receive high-quality excitation voltage, thereby guaranteeing the stability and accuracy of the control rod position measurement of the nuclear power plant.

[0103] Please refer to Figure 8 In some embodiments, step 603 can include, but is not limited to, steps 801 to 803:

[0104] Step 801, controlling the voltage-controlled oscillator to generate a voltage signal based on the phase synchronization signal control voltage.

[0105] Step 802, adjusting the voltage signal based on the phase detector and the phase synchronization signal to make the phase and frequency of the voltage signal equal to those of the phase synchronization signal.

[0106] Step 803, controlling the sine wave generator to process the direct current voltage output by the transformer based on the voltage signal, so as to provide the same frequency and phase excitation voltage to each control rod position detector.

[0107] In step 801 of some embodiments, the phase synchronization signal is used to control the voltage-controlled oscillator (VCO) to generate an initial voltage signal. The phase synchronization signal provides the necessary frequency and phase reference to ensure that the generated voltage signal meets the system requirements. For example, if the phase synchronization signal indicates that a voltage signal with a frequency of 1000 Hz and a phase of 0 degrees is required, the voltage-controlled oscillator will adjust its output to match these parameters.

[0108] In steps 802-803 of some embodiments, after the initial voltage signal is generated, the phase and frequency of the voltage signal are precisely adjusted using a phase detector to ensure that it is exactly identical to the phase synchronization signal. The phase detector (PD) is a component in a phase-locked loop that compares the phase of two signals and outputs an error signal that reflects the phase difference between the input signal and the VCO output signal. In this step, the phase detector compares the phase and frequency of the phase synchronization signal and the VCO output signal, and generates an error voltage that represents the phase difference between them. The specific process is as follows: the phase detector compares the phase and frequency of the phase synchronization signal and the VCO output signal, and the error voltage generated reflects the phase difference between the two signals. The output phase difference is used to adjust the VCO to reduce the phase difference and lock to the frequency of the phase synchronization signal. After locking to the phase synchronization signal, the VCO output signal is used to control the sine wave generator. The sine wave generator generates the excitation voltage according to the VCO output signal, which is used to control the DC voltage output by the transformer.

[0109] Please refer to Figure 9 In some embodiments, after step 603, steps 901-903 can also be included, but are not limited to:

[0110] Step 901: According to the preset transmission frequency, each detector power supply cabinet sends a corresponding pulse signal to the corresponding clock signal line to update the candidate clock signal in the clock signal line.

[0111] Step 902: The phase synchronization module obtains the updated candidate clock signal in each clock signal line, and determines a phase synchronization signal among the multiple updated candidate clock signals according to the preset signal determination rule.

[0112] Step 903: Based on the phase synchronization signal, the sine wave generator processes the DC voltage output by the transformer to provide excitation voltages with the same frequency and the same phase to each control rod position detector.

[0113] In step 901 of some embodiments, during the long-term operation of the system, the clock source of each detector power supply cabinet may experience slight frequency drift due to factors such as temperature and component aging. To prevent this drift from accumulating and causing large deviations, the candidate clock signal in the clock signal line needs to be updated periodically. According to the preset transmission frequency, each detector power supply cabinet sends a pulse signal to its corresponding clock signal line. This pulse signal is the updated candidate clock signal and is transmitted to the phase synchronization module.

[0114] In step 902 of some embodiments, the phase synchronization module receives the updated alternative clock signals transmitted by each clock signal line, and selects one of them as the new phase synchronization signal according to preset signal determination rules. For example, the reliability of each detector power cabinet can be ranked in advance, and the clock signal from the cabinet with the highest reliability is selected preferentially. Alternatively, the alternative clock signals can be voted, and the signal with the majority is selected as the phase synchronization signal. In this way, the influence of individual clock source abnormalities can be minimized. The phase synchronization module distributes the determined phase synchronization signal to each sine wave generator. The sine wave generator modulates the rectified DC voltage of the transformer according to the phase synchronization signal to generate a new excitation voltage output. Since all sine wave generators use the same phase synchronization signal, the output excitation voltages have the same frequency and phase synchronization. The excitation voltage is supplied to the primary winding of each control rod position detector through the rod position detector power supply circuit, and drives the winding to generate an alternating magnetic field. Due to the high synchronization of the excitation voltage, the magnetic field frequencies and phases output by each detector are consistent, thereby avoiding mutual interference and improving the accuracy and reliability of the rod position measurement.

[0115] Through steps 901 to 903, by periodically sending alternative clock signals, updating phase synchronization signals, and generating new excitation voltages, the synchronous power supply method can continuously suppress the frequency drift of the clock source, and the small frequency difference caused by the difference between the detector power supply circuits will not accumulate over time, thereby ensuring the consistency of the output frequency and phase of the primary winding of all rod position detectors, which is of great significance to ensure the safe operation of nuclear power plants.

[0116] The control rod position detection device provided by the embodiment of the present application comprises the synchronous power supply system of the control rod position detector and a plurality of control rod position detectors and a detection plane.

[0117] The plurality of control rod position detectors are uniformly arranged on the detection plane; wherein the positions for arranging the control rod position detectors in the detection plane are detector sites.

[0118] In the detection region of the detection plane, the adjacent alternating magnetic field corresponding to each detector site is zero; wherein the adjacent alternating magnetic field is the alternating magnetic field synthesized by the control rod position detectors adjacent to the detector site at the detector site.

[0119] In order to improve the accuracy of detection and reduce electromagnetic interference, the detection plane is specially designed so that the adjacent alternating magnetic field corresponding to each detector site in the detection region is zero. This means that at each detector site, the alternating magnetic fields generated by adjacent detectors can cancel each other out, thereby reducing electromagnetic interference on the current detector site.

[0120] Please refer to Figure 10For example, in the H4 position, among the four closest detector sites, two produce an alternating magnetic field of 0° phase, and the other two produce an alternating magnetic field of 180° phase. Since the 0° and 180° magnetic fields cancel each other out in space, the electromagnetic interference on the H4 detector site caused by the combined alternating magnetic fields of the adjacent detector sites is effectively canceled out. This layout design significantly reduces electromagnetic interference and improves the performance and accuracy of the control rod position detector. By ensuring that the electromagnetic environment of each detector site is not disturbed by other detectors, the detection device of the present application can more accurately monitor the position of the control rod, which is crucial for the safe operation and effective control of nuclear power plants.

[0121] In the control rod position detection device of the present application, the arrangement of the control rod position detectors on the detection plane is flexible and not limited to any specific form. Figure 10 The arrangement shown in FIG. 1 is only an exemplary layout for illustrating how to achieve the cancellation of adjacent alternating magnetic fields in each detector site on the detection plane. Embodiments of the present application are not limited to a specific arrangement, as long as the arrangement can achieve the purpose of the present application, i.e., reducing or eliminating electromagnetic interference, it can be considered as an acceptable implementation of the present application. In addition to the arrangement shown in FIG. 1, the control rod position detectors can also be arranged in a honeycomb pattern. Figure 10 In addition to the arrangement shown in FIG. 1, the control rod position detectors can also be arranged in a honeycomb pattern. The honeycomb arrangement is a common layout that can provide uniform coverage and help reduce electromagnetic interference between adjacent detectors. In the honeycomb arrangement, each detector site can be designed to produce mutually canceling alternating magnetic fields with its nearest neighbor, thereby minimizing electromagnetic interference throughout the detection plane.

[0122] In addition, any other arrangement that can achieve similar results, such as a straight line arrangement, a spiral arrangement, or any other irregular arrangement, can be considered an embodiment of the present application as long as it ensures that the adjacent alternating magnetic fields of each detector site cancel each other out. The key to the present application is to achieve simultaneous power supply and reduce electromagnetic interference of the control rod position detectors through a reasonable arrangement, rather than being limited to a specific arrangement.

[0123] In some embodiments, a reverse power supply switch is provided inside the rod position detector, which is used to control the reverse power supply of the rod position detector to generate an opposite alternating magnetic field.

[0124] Specifically, the rod position detector typically includes a primary winding and a secondary winding. The primary winding receives an excitation voltage to generate an alternating magnetic field. When the control rod or its extension rod is inserted, the alternating magnetic field is absorbed by the magnetic conductor, causing the secondary winding to induce a voltage change, thereby determining the control rod position.

[0125] In normal conditions, the primary winding of each rod position detector generates an alternating magnetic field with consistent frequency and phase according to the excitation voltage provided by the synchronous power supply system. However, in some special working conditions, it is necessary to locally adjust the magnetic field direction of individual rod position detectors to suppress electromagnetic interference between detectors and improve measurement accuracy. For this purpose, a reverse power supply switch is provided inside the rod position detector. The switch is connected in the power supply circuit of the primary winding and can reverse the polarity of the excitation voltage as needed, so that the primary winding generates a reversed alternating magnetic field.

[0126] For example, when the alternating magnetic fields of two adjacent rod position detectors are in opposite directions, their combined magnetic field strength in the middle of the detection area is close to zero, which has minimal impact on the judgment of the control rod position. Therefore, by properly setting the reverse power supply switch of a part of the rod position detectors, the comprehensive magnetic field distribution of the detector array can be optimized without changing the excitation voltage, and the mutual inductance interference in the local area can be reduced.

[0127] The control strategy of the reverse power supply switch can be determined according to actual needs. Generally, a pre-set fixed combination can be used, i.e. during installation and debugging, the optimal reverse power supply combination is determined according to electromagnetic field simulation analysis and the switch state is fixed. A real-time adaptive strategy can also be used to dynamically optimize the power supply direction of each rod position detector according to the reactor operating conditions and control rod position distribution.

[0128] The reverse power supply switch provided inside the rod position detector provides a flexible and controllable means for optimizing the magnetic field distribution of the detector array. It works in cooperation with the synchronous power supply system to further suppress electromagnetic interference between detectors and improve the reliability and accuracy of control rod position measurement on the basis of ensuring consistent frequency and phase of excitation voltage, which is of great significance to the safe and stable operation of nuclear power plants.

[0129] Please refer to Figure 11 In some embodiments, the control rod position detector 2000 includes a primary winding 2100 for generating an alternating magnetic field according to an excitation voltage provided by a sine wave generator 1210, and an auxiliary winding 2200 connected to an adjustment circuit 1230 for generating a feedback current according to the alternating magnetic field and sending it to the adjustment circuit 1230, so that the adjustment circuit 1230 adjusts the power supply current of the primary winding 2100 according to the feedback current.

[0130] The control rod position detector generally comprises a primary winding excitation coil (primary winding) and a plurality of secondary winding induction coils. The primary winding is excited by an alternating current power supply to generate an alternating magnetic field. When the control rod drive rod is inserted into the detector, the magnetic permeability changes, resulting in a change in the amplitude of the secondary winding induction voltage with the control rod position, thereby achieving measurement of the control rod position.

[0131] The auxiliary winding is mainly used as a feedback control to dynamically adjust the supply current of the primary winding. Specifically, the auxiliary winding induces the alternating magnetic field generated by the primary winding and generates a feedback current in the adjustment loop according to the change in the magnetic field strength. The adjustment loop adjusts the supply current of the primary winding according to the size of the feedback current to maintain the alternating magnetic field within the optimal measurement range, improve the linearity and sensitivity of the control rod position measurement, and the feedback mechanism formed by the auxiliary winding and the adjustment loop can suppress electromagnetic interference to some extent, optimize the measurement performance of a single detector, and improve the system fault tolerance.

[0132] The control rod position detector synchronous power supply system according to the embodiment of the application comprises a plurality of detector power supply cabinets and clock signal lines. Each detector power supply cabinet comprises a power supply module and a sine wave generator group connected in cascade. The sine wave generator group comprises a plurality of parallel sine wave generators, each of which is used to provide excitation voltage to a corresponding control rod position detector. A phase synchronization module is arranged on another branch of each sine wave generator, and the phase synchronization module is connected with all clock signal lines. The sine wave generator is used to receive the phase synchronization signal of the phase synchronization module and provide sine excitation voltage to the control rod position detector based on the phase synchronization signal. The phase synchronization module is used to receive the alternative clock signal in all clock signal lines and determine the phase synchronization signal in the alternative clock signal according to a preset signal determination rule and provide the phase synchronization signal to the sine wave generator. The alternative clock signal in each clock signal line is from the pulse signal sent by the corresponding detector power supply cabinet.

[0133] The application sets multiple probe power supply cabinets and clock signal lines, each probe power supply cabinet internally contains a power supply module and a sine wave generator group. The sine wave generator group is composed of multiple parallel sine wave generators, each sine wave generator is responsible for providing excitation voltage to the corresponding control rod position detector, and another branch of each sine wave generator is provided with a phase synchronization module. The phase synchronization module receives alternative clock signals from each clock signal line, selects one as a phase synchronization signal according to a preset signal determination rule, and then provides it to the sine wave generator. After receiving the phase synchronization signal, the sine wave generator provides a sine excitation voltage to the control rod position detector based on the signal. Since all sine wave generators receive the same phase synchronization signal, they can ensure that the excitation voltage provided to the corresponding control rod position detector is the same frequency and phase. In this way, the application solves the control rod position measurement error problem caused by different frequencies and different phase excitation voltages in the prior art.

[0134] Reference Figure 12 , Figure 12 The hardware structure of the electronic device of another embodiment is illustrated, and the electronic device includes:

[0135] The processor 1201 can be implemented in the form of a general-purpose CPU (Central Processing Unit), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute related programs to implement the technical solutions provided by the embodiments of the application.

[0136] The memory 1202 can be implemented in the form of a read-only memory (ROM), a static storage device, a dynamic storage device, or a random access memory (RAM). The memory 1202 can store an operating system and other application programs. When the technical solutions provided by the embodiments of the present specification are implemented by software or firmware, the related program codes are stored in the memory 1202 and called and executed by the processor 1201 to implement the control rod position detector synchronization power supply method of the embodiments of the application.

[0137] The input / output interface 1203 is used to realize information input and output.

[0138] The communication interface 1204 is used to realize the communication interaction between the device and other devices. The communication can be realized by wired means (such as USB, network cable, etc.), or by wireless means (such as mobile network, Wi-Fi, Bluetooth, etc.).

[0139] The bus 1205 transmits information between the various components (e.g., the processor 1201, the memory 1202, the input / output interface 1203, and the communication interface 1204) of the device.

[0140] The processor 1201, the memory 1202, the input / output interface 1203, and the communication interface 1204 are communicatively connected to each other within the device through the bus 1205.

[0141] The embodiments of the present application also provide a computer program product, which comprises a computer program. The processor of the computer device reads the computer program and executes, so that the computer device executes the control rod position detector synchronization power supply method.

[0142] The terms "first", "second", "third", "fourth" and the like in the description of the present disclosure and the above drawings, if any, are used to distinguish similar objects, and are not necessarily used to describe a particular order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present disclosure described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "comprise" and "include" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not necessarily limit to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0143] It should be understood that in the present disclosure, "at least one" means one or more, and "multiple" means two or more. "And / or" is used to describe the association relationship of the associated objects, which means that there can be three relationships, for example, "A and / or B" can represent three cases of only A, only B and A and B existing at the same time, where A and B can be singular or plural. The character " / " generally represents an "or" relationship between the front and rear associated objects. "At least one of the following" or similar expressions means any combination of these items, including any combination of single item or multiple items. For example, at least one of a, b or c can represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0144] It should be understood that in the description of the embodiments of the present application, the meaning of multiple (or multiple items) is more than two, greater than, less than, more than, etc. is not included in the number, and above, below, etc. is included in the number.

[0145] In several embodiments provided in the present disclosure, it should be understood that the disclosed system, device and method can be implemented in other manners. For example, the described device embodiments are merely schematic. For example, the division of the units is merely logical function division. There can be another division manner for the actual implementation. For example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections can be indirect couplings or communication connections through some interfaces, devices or units, and can be in electrical, mechanical or other forms.

[0146] The units described as separated components can or can not be physically separated, and the components displayed as units can or can not be physical units, i.e., can be located in one place, or can be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purposes of the embodiments.

[0147] In addition, each functional unit in the various embodiments of the present disclosure can be integrated in one processing unit, or each unit can exist physically as a separate unit, or two or more units can be integrated in one unit. The integrated unit can be implemented in the form of hardware, or in the form of software functional units.

[0148] When the integrated unit is implemented in the form of software functional units and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on such an understanding, the technical solutions of the present disclosure essentially, or the part that contributes to the prior art, or all or a part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium, and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods in the various embodiments of the present disclosure. The foregoing storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk, and various media that can store program codes.

[0149] It should also be understood that the various embodiments provided by the embodiments of the present disclosure can be combined in any manner to achieve different technical effects.

[0150] The above is a specific explanation of the embodiments of the present disclosure, but the present disclosure is not limited to the above-described embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present disclosure, and these equivalent modifications or substitutions are included in the scope defined by the claims of the present disclosure.

Claims

1. A control rod position detector synchronous power supply system, characterized by, The application relates to a power supply device for control rod position detectors, which comprises a plurality of detector power supply cabinets and clock signal lines, each of the detector power supply cabinets comprises a power supply module and a sine wave generator group connected in sequence, the sine wave generator group comprises a plurality of parallel sine wave generators, each of the sine wave generators is used for providing excitation voltage to a corresponding control rod position detector, a phase synchronization module is arranged on another branch of each of the sine wave generators, and the phase synchronization module is connected with all the clock signal lines. The sine wave generator is used for receiving a phase synchronization signal of the phase synchronization module and providing sine excitation voltage to the control rod position detector based on the phase synchronization signal. The phase synchronization module is used for receiving alternative clock signals in all the clock signal lines and determining a phase synchronization signal in the alternative clock signals according to a preset signal determination rule and providing the phase synchronization signal to the sine wave generator; wherein the alternative clock signal in each of the clock signal lines is from a pulse signal sent by a corresponding detector power supply cabinet.

2. The control rod position detector synchronous power supply system according to claim 1, wherein The power supply module of each of the detector primary winding power supply cabinets comprises a first power supply sub-module and a second power supply sub-module connected in parallel, the first power supply sub-module is configured as an AC power supply sub-module or a DC power supply sub-module, and the second power supply sub-module is configured as an AC power supply sub-module or a DC power supply sub-module. The AC power supply sub-module comprises an AC power supply, an AC transformer and a first diode connected in sequence, the AC transformer is used for performing voltage step-down processing on voltage output by the AC power supply and outputting DC voltage to the sine wave generator, the anode of the first diode is electrically connected with the anode of the AC power supply, and the cathode of the first diode is electrically connected with the cathode of the AC power supply. The DC power supply sub-module comprises a DC power supply, a DC transformer and a second diode connected in sequence, the DC transformer is used for performing voltage step-down processing on voltage output by the DC power supply and outputting DC voltage to the sine wave generator, the anode of the second diode is electrically connected with the anode of the DC power supply, and the cathode of the second diode is electrically connected with the cathode of the DC power supply.

3. The control rod position detector synchronous power supply system according to claim 1, wherein The phase synchronization module comprises a clock signal voter and a voltage control oscillator connected in sequence, the signal voter is connected with each of the clock signal lines, the signal voter is used for determining one phase synchronization signal in a plurality of alternative clock signals according to the signal determination rule and sending the phase synchronization signal to the voltage control oscillator, so that the voltage control oscillator generates a voltage signal with the same phase and frequency as the phase synchronization signal.

4. The control rod position detector synchronous power supply system according to claim 3, wherein A phase detector is further arranged between the clock signal voter and the voltage control oscillator, and a feedback branch is further arranged between the phase detector and an output terminal of the voltage control oscillator, the phase detector receiving the excitation voltage output by the voltage control oscillator and the phase synchronization signal through the feedback branch, and adjusting the excitation voltage according to the phase synchronization signal so that the phase and frequency of the excitation voltage are the same as those of the phase synchronization signal.

5. A method for synchronously powering a control rod position detector, applied to the synchronously powering system of the control rod position detector according to any one of claims 1 to 4, characterized in that, The method comprises the following steps: controlling each detector power supply cabinet to send a corresponding pulse signal to a corresponding clock signal line as an alternative clock signal in the clock signal line; acquiring the alternative clock signal in each clock signal line through a phase synchronization module, and determining a phase synchronization signal from a plurality of alternative clock signals according to a preset signal determination rule; controlling a sine wave generator to process a direct current voltage output by a transformer based on the phase synchronization signal, so as to provide an excitation voltage with the same frequency and phase to each control rod position detector.

6. The method of claim 5, wherein, The method of acquiring the alternative clock signal in each clock signal line through the phase synchronization module and determining a phase synchronization signal from a plurality of alternative clock signals according to a preset signal determination rule comprises the following steps: acquiring a preset detector power supply cabinet priority sequence; based on the detector power supply cabinet priority sequence, searching in a plurality of alternative clock signals to determine a highest priority alternative clock signal as the phase synchronization signal.

7. The method of claim 5, wherein, The method of controlling a sine wave generator to process a direct current voltage output by a transformer based on the phase synchronization signal, so as to provide an excitation voltage with the same frequency and phase to each control rod position detector comprises the following steps: controlling a voltage control oscillator to generate a voltage signal based on the phase synchronization signal; adjusting the voltage signal based on a phase detector and the phase synchronization signal, so that the phase and frequency of the voltage signal are equal to those of the phase synchronization signal; controlling the sine wave generator to process the direct current voltage output by the transformer based on the voltage signal, so as to provide an excitation voltage with the same frequency and phase to each control rod position detector.

8. The method of claim 5, wherein, After the method of controlling a sine wave generator to process a direct current voltage output by a transformer based on the phase synchronization signal, so as to provide an excitation voltage with the same frequency and phase to each control rod position detector, the method further comprises the following steps: controlling each detector power supply cabinet to send a corresponding pulse signal to a corresponding clock signal line according to a preset transmission frequency, to update the alternative clock signal in the clock signal line; acquiring the updated alternative clock signal in each clock signal line through a phase synchronization module, and determining a phase synchronization signal from a plurality of updated alternative clock signals according to a preset signal determination rule; controlling a sine wave generator to process a direct current voltage output by a transformer based on the phase synchronization signal, so as to provide an excitation voltage with the same frequency and phase to each control rod position detector.

9. A control rod probe apparatus, characterized by, The control rod position detector synchronous power supply system comprises a control rod position detector synchronous power supply system and a plurality of control rod position detectors according to any one of claims 1 to 4. The plurality of control rod position detectors are uniformly arranged on the detection plane; wherein the positions for arranging the control rod position detectors on the detection plane are detector sites. In the detection area of the detection plane, the adjacent alternating magnetic field corresponding to each detector site is zero; wherein the adjacent alternating magnetic field is the alternating magnetic field synthesized by the control rod position detectors adjacent to the detector site at the detector site.

10. The control rod probe of claim 9, wherein, The control rod position detector comprises a primary winding and an auxiliary winding; the primary winding is used to generate an alternating magnetic field according to the excitation voltage provided by the sine wave generator; a regulating loop is further arranged between the sine wave generator and the primary winding; the auxiliary winding is connected to the regulating loop and is used to generate a feedback current according to the alternating magnetic field and send the feedback current to the regulating loop, so that the regulating loop adjusts the power supply current of the primary winding according to the feedback current.

11. The control rod probe of claim 9, wherein, A reverse power supply switch is arranged in the rod position detector, and the reverse power supply switch is used to control the rod position detector to perform reverse power supply, so that the control rod position detector generates an opposite alternating magnetic field.

12. An electronic device, comprising: The control rod position detector synchronous power supply system comprises a control rod position detector synchronous power supply system and a plurality of control rod position detectors according to any one of claims 1 to 4. The memory stores a computer program, and the processor executes the computer program to realize the control rod position detector synchronous power supply method according to any one of claims 5 to 8.

13. A computer-readable storage medium, characterized in that, The storage medium stores a program, and the program is executed by the processor to realize the control rod position detector synchronous power supply method according to any one of claims 5 to 8.

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