CN114977776A - Modular rectifier cabinet, manufacturing method thereof and control rod driving mechanism power supply - Google Patents
Modular rectifier cabinet, manufacturing method thereof and control rod driving mechanism power supply Download PDFInfo
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/12—Arrangements for reducing harmonics from ac input or output
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/14—Arrangements for reducing ripples from dc input or output
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
- H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
- H02M5/10—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using transformers
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/06—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode
- H02M7/068—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode mounted on a transformer
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M7/219—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a bridge configuration
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The invention discloses a modular rectifier cabinet, a manufacturing method thereof and a control rod drive mechanism power supply.A plurality of rectifier modules are connected in parallel and reserve spare rectifier modules are reserved, so that the modular rectifier cabinet can automatically quit operation after a single rectifier module fails; the three-stage rectification structure consisting of a three-phase PWM rectification circuit, a phase-shifted full-bridge inverter circuit and an uncontrolled rectification circuit is adopted to realize rectification and electrical isolation; in the PWM rectification circuit and the phase-shifted full-bridge inverter circuit, a SiC-MOSFET switching tube is adopted to finish rectification, inversion, current sine and unit power factor correction; the coordination control device is used for finishing signal acquisition and communication coordination of internal and external equipment, and is connected with the rectification module and the coordination control device through the rapid CAN bus, so that a control framework independent of the master control device is built; the droop control strategy is adopted to realize the automatic current sharing control among the multiple rectifier modules; the reliability of the control rod drive mechanism power supply is enhanced as a whole.
Description
Technical Field
The invention relates to the technical field of electrical technology of nuclear power station reactors, in particular to a modular rectifier cabinet, a manufacturing method thereof and a control rod drive mechanism power supply.
Background
At present, in nuclear power stations built and under construction in China, a power supply system consisting of two motor generator sets with flywheels, three control cabinets and three breaker screens is basically adopted, and power is supplied to a Coil (CRDM) after half-wave rectification through a rod control system. The method has the defects of high noise and vibration generated by supplying power to the CRDM, low power supply efficiency, complex protection, large maintenance workload, large volume, high price and the like. Although static bar power systems based on silicon controlled rectifier have been optimized for the above problems, there still exist problems of low efficiency and power factor, large size, and poor scalability and usability.
In view of this, the present application is specifically made.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the existing control rod driving mechanism has poor power supply reliability and expansibility, and is inconvenient to maintain. The modular rectifier cabinet and the control rod driving mechanism power supply improve the reliability and the expansibility of the control rod driving mechanism power supply, enable the control rod driving mechanism power supply to be more convenient to maintain, reduce the harmonic pollution of a rectifier module to a 380V alternating current bus, reduce the internal loss and improve the power factor and the efficiency of equipment through a redundancy design, a multi-stage conversion rectifier design, a sub-modular design and the application and protection configuration of a SiC-MOSFET switching tube.
The invention is realized by the following technical scheme:
on the one hand, the method comprises the following steps of,
the invention provides a modular rectifying cabinet, comprising:
the system comprises a coordination control device and a plurality of parallel rectification modules, wherein the plurality of parallel rectification modules comprise a standby rectification module;
the rectification module includes: the alternating current rectifying unit and the DC isolating unit are connected with each other; the alternating current rectifying unit includes a three-phase PWM rectifying circuit, and the DC isolating unit includes: a phase-shifted full-bridge inverter circuit and an uncontrolled rectifying circuit;
the three-phase PWM rectifying circuit and the phase-shifted full-bridge inverter circuit comprise SiC-MOSFET switching tubes, and the SiC-MOSFET switching tubes are used for rectification and inversion and simultaneously realize the sine of alternating-current side current and the correction of unit power factor;
the rectification modules are connected with the coordination control device through a CAN bus, the coordination control device is used for collecting and transmitting signals inside and outside the rectification cabinet, issuing output voltage target values and on/off control instructions to the rectification modules, collecting information of the rectification modules in the cabinet in real time, receiving start/stop commands issued by the control cabinet, communicating with the control cabinet through RJ45/TCP, and meanwhile achieving automatic current sharing control among the rectification modules by adopting a droop control strategy.
Further, in the above-mentioned case,
the alternating current rectifying unit further includes: the system comprises an alternating current EMI filter, an alternating current input contactor, a three-phase alternating current inductor and a bus supporting capacitor;
the DC isolation unit further includes: the high-frequency transformer, the output filter circuit, the direct-current EMI filter and the direct-current input contactor are arranged on the power supply;
after the alternating current EMI filter, the alternating current input contactor and the three-phase alternating current inductor are sequentially connected in series, one end of the alternating current EMI filter is connected to a 380V alternating current bus, and the other end of the alternating current EMI filter is connected with the three-phase PWM rectifying circuit;
after the three-phase PWM rectification circuit, the bus support capacitor and the phase-shifted full-bridge inverter circuit are connected in parallel, one end of the three-phase PWM rectification circuit is connected with the three-phase current inductor, and the other end of the three-phase current inductor is connected with the high-frequency transformer;
after the uncontrolled rectifying circuit is connected with the output filter circuit in parallel, one end of the uncontrolled rectifying circuit is connected with the high-frequency transformer, and the other end of the uncontrolled rectifying circuit is connected with the direct-current EMI filter;
one end of the direct current input contactor is connected with the direct current EMI filter, and the other end of the direct current input contactor is connected with a direct current bus.
Further, in the above-mentioned case,
the modular rectification cabinet further comprises: the integrated AC/DC back plate and the plug-and-play terminal are integrated; the rectification module is plugged in the integrated alternating current and direct current back plate through the plug-and-play type terminal.
Further, in the above-mentioned case,
the alternating current rectifying unit and the DC isolating unit are interconnected through the plug-and-play type terminal.
On the other hand, in the case of a system,
the invention provides a method for manufacturing a modular rectifier cabinet, which comprises the following steps:
selecting a coordination control device and a plurality of rectification modules;
connecting a plurality of rectifier modules in parallel, and arranging a standby rectifier module in the plurality of rectifier modules connected in parallel;
for each rectifier module, the following steps are performed:
dividing the internal structure of a rectification module into an alternating current rectification unit and a DC isolation unit which are connected with each other, arranging a three-phase PWM rectification circuit in the alternating current rectification unit, and arranging a phase-shifted full-bridge inverter circuit and an uncontrolled rectification circuit in the DC isolation unit;
arranging SiC-MOSFET switching tubes in the three-phase PWM rectifying circuit and the phase-shifted full-bridge inverter circuit, wherein the SiC-MOSFET switching tubes are used for rectifying and inverting, and performing current sine and unit power factor correction;
the method comprises the steps of connecting a rectifying module with a coordination control device through a CAN bus, wherein the coordination control device is used for collecting and transmitting signals inside and outside a rectifying cabinet, issuing an output voltage target value and an on/off control instruction to each rectifying module, collecting information of each rectifying module in the cabinet in real time, receiving an on/off command issued by a control cabinet, communicating with the control cabinet through RJ45/TCP, and meanwhile realizing automatic current sharing control among a plurality of rectifying modules by adopting a droop control strategy.
Further, in the above-mentioned case,
the manufacturing method of the modular rectifying cabinet further comprises the following steps:
arranging an alternating current EMI filter, an alternating current input contactor, a three-phase current-crossing inductor and a bus supporting capacitor in the alternating current rectifying unit, and arranging a high-frequency transformer, an output filter circuit, a direct current EMI filter and a direct current input contactor in the DC isolating unit;
after the alternating current EMI filter, the alternating current input contactor and the three-phase alternating current inductor are sequentially connected in series, one end of the alternating current EMI filter is connected with a 380V alternating current bus, and the other end of the alternating current EMI filter is connected with the three-phase PWM rectifying circuit;
after the three-phase PWM rectifying circuit, the bus supporting capacitor and the phase-shifted full-bridge inverter circuit are connected in parallel, one end of the three-phase PWM rectifying circuit is connected with the three-phase alternating current inductor, and the other end of the three-phase PWM rectifying circuit is connected with the high-frequency transformer;
after the uncontrolled rectifying circuit is connected with the output filter circuit in parallel, one end of the uncontrolled rectifying circuit is connected with the high-frequency transformer, and the other end of the uncontrolled rectifying circuit is connected with the direct-current EMI filter;
and connecting one end of the direct current input contactor with the direct current EMI filter, and connecting the other end of the direct current input contactor with a direct current bus.
Further, in the above-mentioned case,
the manufacturing method of the modular rectifier cabinet further comprises the following steps:
arranging an integrated AC/DC back plate and a plug-and-play terminal;
inserting a rectification module on the integrated alternating current and direct current back plate through the plug-and-play type terminal;
and interconnecting the alternating current rectifying unit and the DC isolating unit through the plug-and-play type terminal.
In a still further aspect of the present invention,
the invention provides a control rod drive mechanism power supply, comprising:
the modular rectifying cabinets are arranged on the upper side of the cabinet body;
one modular rectifier cabinet corresponds to one energy storage cabinet and one control cabinet;
the input end of the modular rectifier cabinet is connected to a 380V alternating current bus through an alternating current breaker, and the output end of the modular rectifier cabinet is connected with the input end of the energy storage cabinet and the input end of the control cabinet;
the control cabinet sends a control signal to the alternating current circuit breaker and sends the control signal to the alternating current circuit breaker; the output end of the control cabinet is connected with the magnetic coil and supplies power to the magnetic coil;
the control cabinet is connected with the coordination control device in a bidirectional way.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. according to the modular rectifier cabinet, the manufacturing method and the control rod driving mechanism power supply, the plurality of rectifier modules are connected in parallel, the standby rectifier modules are reserved, so that the modular rectifier cabinet can automatically quit operation after a single rectifier module fails, and the normal work of the modular rectifier cabinet is not influenced; the three-stage rectification structure consisting of a three-phase PWM rectification circuit, a phase-shifted full-bridge inverter circuit and an uncontrolled rectification circuit is adopted to realize rectification and electrical isolation; in the PWM rectification circuit and the phase-shifted full-bridge inverter circuit, a SiC-MOSFET switching tube is adopted to finish rectification, inversion, current sine and unit power factor correction; the coordination control device is used for finishing signal acquisition and communication coordination of internal and external equipment, and is connected with the rectification module and the coordination control device through the rapid CAN bus, so that a control framework independent of the master control device is built; the reliability of the control rod driving mechanism power supply is enhanced in four aspects of redundancy design, multi-stage conversion rectification design, application of the SiC-MOSFET switching tube and establishment of an independent control framework;
2. according to the modular rectifying cabinet, the manufacturing method and the control rod driving mechanism power supply, the integrated alternating current and direct current back plate and the plug-and-play type terminal are arranged, the alternating current rectifying unit and the DC isolation unit are interconnected through the plug-and-play type terminal, and each submodule can be pulled out and maintained independently, so that the control rod driving mechanism power supply is convenient to maintain;
3. according to the modular rectifier cabinet, the manufacturing method and the control rod driving mechanism power supply, the rectifier modules are increased or decreased in a hot plug mode, and the expansibility of the control rod driving mechanism power supply is enhanced;
4. according to the modular rectifier cabinet, the manufacturing method and the control rod driving mechanism power supply, the rectifier module adopts a droop control strategy of output voltage/current, and automatic current sharing control among multiple modules is achieved. The control framework does not depend on a specific host or a main control device, the 'modular' operation of the rectifier cabinet is really realized, and the power supply reliability of the rectifier cabinet is improved.
Drawings
In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and that for those skilled in the art, other related drawings can be obtained from these drawings without inventive effort.
FIG. 1 is a schematic diagram of the overall structure of a control rod drive mechanism power supply provided in embodiment 1 of the present invention;
fig. 2 is an electrical schematic diagram of a rectifier module according to embodiment 1 of the present invention;
fig. 3 is a schematic diagram illustrating an electrical connection relationship between the ac rectifying unit and the DC isolating unit according to embodiment 1 of the present invention.
Reference numbers and corresponding part names in the drawings:
the power supply comprises a 1-rectification module, a 2-coordination control device, a 3-alternating current breaker, an 11-alternating current rectification unit, a 12-DC isolation unit, a 111-three-phase PWM rectification circuit, a 112-alternating current EMI filter, a 113-alternating current input contactor, a 114-three-phase current-intersecting inductor, a 115-bus support capacitor, a 121-phase-shifted full-bridge inverter circuit, a 122-uncontrolled rectification circuit, a 123-high-frequency transformer, a 124-output filter circuit, a 125-direct current EMI filter and a 126-direct current input contactor.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example 1
To solve the problems of poor reliability and expansibility of the conventional control rod driving mechanism power supply and inconvenience in maintenance, the present embodiment provides a modular rectification cabinet, and the structure of the rectification cabinet refers to fig. 1, and includes:
a coordinating control device 2 and N parallel rectifier modules 1, and a standby rectifier module 1. It should be noted that, in this embodiment, the rectifier cabinet is arranged according to "N + 1" rectifier modules 1, so that when a single rectifier module 1 fails, the failed module automatically exits from operation, and meanwhile, the standby rectifier module 1 is quickly replaced to keep the rectifier cabinet working together with the remaining N-1 rectifier modules 1, thereby enhancing the reliability of the control rod driving mechanism power supply. It should be noted that the number N of the rectifier modules 1 depends on the actual situation.
The rectifying module 1 is used as a core device for AC/DC power conversion, and realizes rectification and electrical isolation by adopting three-level conversion. Specifically, the rectifier module 1 includes: an alternating current rectifying unit 11 and a DC isolation unit 12 connected to each other. The alternating current rectification unit 11 comprises a three-phase PWM rectification circuit 111, a phase-shifted full-bridge inverter circuit 121 is internally provided with a SiC-MOSFET switching tube to complete rectification and inversion, and sine and unit power factor correction of alternating current side current are realized, so that harmonic pollution of the rectification module 1 to a 380V alternating current bus is reduced, loss is reduced, and reliability of a control rod driving mechanism power supply is enhanced.
Further, the rectifier module 1 is connected with the coordination control device 2 through a fast CAN bus in the cabinet.
It should be noted that the fast CAN bus may receive the output voltage control target value issued by the coordination control device 2, and complete the closed-loop adjustment of the output voltage. The coordination control device 2 is used for collecting and transmitting signals in the rectifier cabinet and controlling communication of internal and external equipment of the rectifier cabinet. Specifically, in the above, the coordination control device 2 receives the start and stop control commands issued by the control cabinet through the dry contact, completes the communication with the control cabinet through the RJ45/TCP network interface, receives the target value of the output voltage of the rectifier cabinet issued by the control cabinet, and uploads all the faults, states and measurement signals of the rectifier cabinet to the control cabinet; in the opposite direction, the coordination control device 2 issues an output voltage target value, a power-on/power-off control instruction and the like to each rectifier module 1 through a CAN bus in the rectifier cabinet, and collects detailed working states of each rectifier module 1 in the rectifier cabinet and key information such as voltage, current, temperature, insulation, resistance and the like in real time.
The control framework constructed by connecting the rectifier module 1 and the coordination control device 2 through the rapid CAN bus CAN perform closed-loop regulation of output voltage without depending on a specific host or a main control device, so that the modular operation of the rectifier cabinet is realized, and the reliability of power supply of the rectifier cabinet to the electromagnetic coil is improved.
Therefore, the structure of the rectifier module 1 is improved in four aspects of redundancy design, multi-stage conversion rectifier design, application of the SiC-MOSFET switching tube and establishment of an independent control framework, the work of a rectifier cabinet can be guaranteed not to be affected by a certain fault module, multi-stage rectification, sine of current and unit power factor correction are achieved, closed-loop regulation of output voltage can be independently controlled, and reliability of a control rod driving mechanism power supply is enhanced in multiple aspects.
Next, the electrical principle and the internal circuit structure of the rectifier module 1 will be described.
As shown in fig. 2, the ac rectifying unit 11 includes an ac EMI filter 112, an ac input contactor 113, a three-phase ac inductor 114, a three-phase PWM rectifying circuit 111, and a bus support capacitor C1. The DC isolation unit 12 includes: a phase-shifted full-bridge inverter circuit 121, a high-frequency transformer 123, an uncontrolled rectifier circuit 122, an output filter circuit 124, a DC EMI filter 125 and a DC input contactor 126.
Wherein,
with respect to the internal circuit configuration of the ac rectifying unit 11, the three-phase ac inductance 114 includes: inductors L1, L2 and L3, and a SiC-MOSFET switching tube M1, M2, M3, M4, M5 and M6 are arranged in the three-phase PWM rectification circuit 111. In the connection mode, the input end of the alternating current EMI filter 112 is connected to a 380V alternating current bus, and the output end is connected with the input end of the alternating current input contactor; the output end of the alternating current input contactor is respectively connected with the input ends of the inductors L1, L2 and L3; in the three-phase PWM rectifying circuit 111, SiC-MOSFET switching tubes M1 and M2 are connected in series, SiC-MOSFET switching tubes M3 and M4 are connected in series, and SiC-MOSFET switching tubes M5 and M6 are connected in series; m1 and M2, M3 and M4, and M5 and M6 which are connected in series are respectively connected with the bus support capacitor 115 in parallel; the output end of the inductor L1 is connected between the SiC-MOSFET switching tubes M1 and M2, the output end of the inductor L2 is connected between the SiC-MOSFET switching tubes M3 and M4, and the output end of the inductor L3 is connected between the SiC-MOSFET switching tubes M5 and M6.
For the internal circuit structure of the DC isolation unit 12, the phase-shifted full-bridge inverter circuit includes SiC-MOSFET switching tubes M7, M8, M9, and M10, the uncontrolled rectifier circuit 122 includes diodes D1, D2, D3, and D4, and the output filter circuit 124 includes an inductor L4 and a capacitor C2. In the connection mode, the SiC-MOSFET switch tubes M7 and M8 are connected in series, the SiC-MOSFET switch tubes M9 and M10 are connected in series, and the series-connected M7 and M8, and the series-connected M9 and M10 are respectively connected in parallel at two ends of the bus support capacitor 115. The diode D1 is connected with the diode D2 in series, and the diode D3 is connected with the diode D4 in series; the diodes D1 and D2 and the diodes D3 and D4 connected in series are respectively connected in parallel with the output filter circuit 124. The high frequency transformer 123 is connected between the phase-shifted full-bridge inverter circuits 121. In the filter circuit, an inductor L4 is connected in series with a capacitor C2. The filter circuit is then connected in sequence to the dc EMI filter 125 and the dc input contactor, the output of which is connected to the dc bus.
In addition, the rectification cabinet further includes: integrated ac/dc and plug-and-play type terminal. The rectifier module 1 and the coordination control device 2 are plugged on the integrated alternating current and direct current backboard through the plug-and-play terminals, so that hot plugging of the rectifier module 1 and power-off-free operation and maintenance of the current cabinet are realized, and the fault repair time of the rectifier cabinet can be effectively shortened. And as shown in fig. 3, the alternating current rectifying unit 11 and the DC isolation unit 12 are also interconnected through plug-and-play terminals to achieve power and signal interconnection, thereby further improving the maintainability of the rectifying cabinet.
Further, the modular rectification cabinet further comprises: an ac circuit breaker 3 and a droop controller. Wherein, the alternating current breaker 3 performs short-circuit protection on the rectifier cabinet. The droop controller can perform automatic current sharing control among the plurality of rectifier modules 1, and is connected to the output end of the rectifier cabinet.
The embodiment also enhances the expandability of the rectifier cabinet by adopting the integrated direct-current backlight and the plug-and-play terminal. The user can conveniently change the output power of the rectifier cabinet only by increasing or reducing the number of the modules, thereby being well adapted to the power supply requirement of the control rod drive of various nuclear power stations such as small reactors, large reactors and the like.
Example 2
This embodiment provides a method for manufacturing the modular rectification cabinet according to embodiment 1, including the following steps:
step 1: and selecting one coordination control device and N rectifying modules. It should be noted that the number N of the rectifier modules is determined according to actual situations.
Step 2: the plurality of rectifier modules are connected in parallel, and a standby rectifier module is arranged in the plurality of parallel rectifier modules. In the embodiment, the rectifier cabinet is arranged according to the N +1 rectifier modules, so that when a single rectifier module breaks down, the fault module automatically quits running, and meanwhile, the spare rectifier module is quickly arranged to replace the fault module and keep the rectifier cabinet working together with the rest N-1 rectifier modules, so that the reliability of the control rod driving mechanism power supply is enhanced.
And step 3: for each rectifier module, performing step 3.1 to step 3.3:
step 3.1: the internal structure of a rectification module is divided into an alternating current rectification unit and a DC isolation unit which are connected with each other, a three-phase PWM rectification circuit is arranged in the alternating current rectification unit, and a phase-shifted full-bridge inverter circuit and an uncontrolled rectification circuit are arranged in the DC isolation unit.
The rectification module is used as a core device of AC/DC power conversion, and realizes rectification and electrical isolation by adopting three-stage conversion.
Step 3.2: and SiC-MOSFET switching tubes are arranged in the three-phase PWM rectifying circuit and the phase-shifted full-bridge inverter circuit and are used for rectifying and inverting, and performing current sine and unit power factor correction.
The step can reduce the harmonic pollution of the rectifier module to the 380V alternating current bus, reduce the loss and further enhance the reliability of the control rod driving mechanism power supply.
Step 3.3: and the rectification module is connected with a coordination control device through a rapid CAN bus, and the coordination control device is used for collecting and transmitting signals in the rectification cabinet and controlling communication of internal and external equipment of the rectification cabinet.
It should be noted that the fast CAN bus may receive the output voltage control target value issued by the cooperative control apparatus, and complete the closed-loop regulation of the output voltage. The coordination control device is used for collecting and transmitting signals in the rectifier cabinet and controlling communication of internal and external equipment of the rectifier cabinet. Specifically, in the upper part, the coordination control device receives a start-up control command and a stop control command issued by the control cabinet through a dry contact, completes communication with the control cabinet through an RJ45/TCP network interface, receives a rectifier cabinet output voltage target value issued by the control cabinet, and uploads all faults, states and measurement signals of the rectifier cabinet to the control cabinet; and in the opposite direction, the coordination control device issues an output voltage target value, an on/off control instruction and the like to each rectifier module through a CAN bus in the rectifier cabinet, and collects the detailed working state of each rectifier module in the rectifier cabinet and key information such as voltage, current, temperature, insulation, resistance and the like in real time.
The control architecture constructed by connecting the rectification module with the coordination control device through the rapid CAN bus CAN carry out closed-loop regulation on output voltage and automatic current sharing control among a plurality of direct current power supply modules without depending on a specific host or a main control device. The modularized operation of the rectifier cabinet is realized, so that the reliability of supplying power to the electromagnetic coil by the rectifier cabinet is improved.
The following describes in detail the method of arranging the circuit structure inside the rectifier module:
first, with respect to the arrangement of the internal circuit structure of the alternating current rectifying unit:
an alternating current EMI filter, an alternating current input contactor, a three-phase current-intersecting inductor and a bus supporting capacitor C1 are selected, and a three-phase PWM rectification circuit is arranged. The three-phase alternating current inductor selects three inductors L1, L2 and L3, and the three-phase PWM rectifying circuit selects six SiC-MOSFET switching tubes: m1, M2, M3, M4, M5 and M6.
The input end of the alternating current EMI filter is connected to a 380V alternating current bus, and the output end of the alternating current EMI filter is connected with the input end of the alternating current input contactor; the output end of the alternating current input contactor is respectively connected with the input ends of the inductors L1, L2 and L3;
in the three-phase PWM rectification circuit, a SiC-MOSFET switching tube M1 is connected with a M2 in series, a SiC-MOSFET switching tube M3 is connected with a M4 in series, and a SiC-MOSFET switching tube M5 is connected with a M6 in series; m1 and M2, M3 and M4, and M5 and M6 which are connected in series are respectively connected with the bus support capacitor in parallel;
the output end of the inductor L1 is connected between the SiC-MOSFET switching tubes M1 and M2, the output end of the inductor L2 is connected between the SiC-MOSFET switching tubes M3 and M4, and the output end of the inductor L3 is connected between the SiC-MOSFET switching tubes M5 and M6.
Then, for the internal circuit structure arrangement of the DC isolation unit:
a high-frequency transformer, a direct current EMI filter and a direct current input contactor are selected, and a phase-shifted full-bridge inverter circuit, an uncontrolled rectifier circuit and an output filter circuit are arranged. Wherein, select four SiC-MOSFET switch tubes in the full-bridge inverter circuit of phase-shifting: m7, M8, M9 and M10; four diodes D1, D2, D3 and D4 are selected in the uncontrolled rectifying circuit; an inductor L4 and a capacitor C2 are selected in the output filter circuit.
Connecting a SiC-MOSFET switching tube M7 with M8 in series, and connecting a SiC-MOSFET switching tube M9 with M10 in series; after the serial connection, M7 and M8, M9 and M10 are respectively connected in parallel at two ends of the bus supporting capacitor.
The diode D1 is connected with the diode D2 in series, and the diode D3 is connected with the diode D4 in series; after the series connection, the diodes D1 and D2, and the diodes D3 and D4 are respectively connected in parallel with the output filter circuit.
A high-frequency transformer is connected between the phase-shifted full-bridge inverter circuits.
An output filter circuit is formed by connecting an inductor L4 and a capacitor C2 in series.
And the direct current EMI filter and the direct current input contactor are connected in sequence after the filter circuit.
And connecting the output end of the direct current input contactor with a direct current bus.
In addition, the first and second substrates are,
an integrated AC/DC and plug-and-play type terminal is arranged for the rectifier cabinet. The rectifier module is inserted into the integrated alternating current and direct current backboard through the plug-and-play type terminal, so that hot plugging of the rectifier module and power-loss-free operation and maintenance of the current cabinet are realized, and the fault repair time of the rectifier cabinet can be effectively shortened. And the alternating current rectifying unit and the DC isolation unit are also connected with each other through a plug-and-play terminal to realize power and signal interconnection, so that the maintainability of the rectifying cabinet is further improved.
Example 3
The present embodiment provides a crdm power supply as described in fig. 1, comprising:
the modular rectifier cabinets are arranged on the upper portion of the rack, and the modular rectifier cabinets, the energy storage cabinets and the control cabinets are arranged on the rack;
one modular rectifier cabinet corresponds to one energy storage cabinet and one control cabinet;
the input end of the modular rectifier cabinet is connected to a 380V alternating current bus through an alternating current breaker, and the output end of the modular rectifier cabinet is connected with the input end of the energy storage cabinet and the input end of the control cabinet;
the control cabinet sends a control signal to the alternating current circuit breaker; the output end of the control cabinet is connected with the magnetic coil and supplies power to the magnetic coil;
the control cabinet is connected with the coordination control device in a bidirectional way.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. A modular rectification cabinet, comprising:
the device comprises a coordination control device (2) and a plurality of parallel rectification modules (1), wherein the plurality of parallel rectification modules (1) comprise a standby rectification module;
the rectification module includes: an alternating current rectifying unit (11) and a DC isolating unit (12) connected to each other; the alternating current rectifying unit (11) includes a three-phase PWM rectifying circuit (111), and the DC isolation unit (12) includes: a phase-shifted full-bridge inverter circuit (121) and an uncontrolled rectifier circuit (122);
the three-phase PWM rectifying circuit (111) and the phase-shifted full-bridge inverter circuit (121) comprise SiC-MOSFET switching tubes, and the SiC-MOSFET switching tubes are used for rectification and inversion and simultaneously realize the sine of alternating-current side current and the correction of unit power factor;
the rectification module is connected with the coordination control device (2) through a CAN bus;
the coordination control device (2) is used for collecting and transmitting signals inside and outside the rectifier cabinet, issuing output voltage target values and on/off control instructions to the rectifier modules, collecting information of the rectifier modules in the cabinet in real time, receiving on/off commands issued by the control cabinet, communicating with the control cabinet through RJ45/TCP, and meanwhile achieving automatic current sharing control among the rectifier modules by adopting a droop control strategy.
2. A modular rectifying cabinet according to claim 1,
the alternating current rectification unit (11) further comprises: an alternating current EMI filter (112), an alternating current input contactor (113), a three-phase alternating current inductor (114) and a bus supporting capacitor (115);
the DC isolation unit (12) further comprises: a high frequency transformer (123), an output filter circuit (124), a DC EMI filter (125) and a DC input contactor (126);
after the alternating current EMI filter (112), the alternating current input contactor (113) and the three-phase alternating current inductor (114) are sequentially connected in series, one end of the alternating current EMI filter is connected to a 380V alternating current bus, and the other end of the alternating current EMI filter is connected to the three-phase PWM rectifying circuit (111);
after the three-phase PWM rectification circuit (111), the bus supporting capacitor (115) and the phase-shifted full-bridge inverter circuit (121) are connected in parallel, one end of the three-phase PWM rectification circuit is connected with the three-phase current-crossing inductor (114), and the other end of the three-phase current-crossing inductor is connected with the high-frequency transformer (123);
after the uncontrolled rectifying circuit (122) is connected with the output filter circuit (124) in parallel, one end of the uncontrolled rectifying circuit is connected with the high-frequency transformer (123), and the other end of the uncontrolled rectifying circuit is connected with the direct-current EMI filter (125);
one end of the direct current input contactor (126) is connected with the direct current EMI filter (125), and the other end is connected with a direct current bus.
3. A modular rectification cabinet as claimed in claim 1, further comprising: the integrated AC/DC back plate and the plug-and-play terminal are integrated; the rectification module (1) is plugged on the integrated alternating current and direct current backboard through the plug-and-play type terminal.
4. A modular rectifying cabinet according to claim 3, characterized in that said alternating current rectifying unit (11) and said DC isolation unit (12) are interconnected through said plug and play type terminals.
5. A manufacturing method of a modular rectifying cabinet is characterized by comprising the following steps:
selecting a coordination control device and a plurality of rectification modules;
connecting a plurality of rectifier modules in parallel, and arranging a standby rectifier module in the plurality of rectifier modules connected in parallel;
for each rectifier module, the following steps are performed:
dividing the internal structure of a rectification module into an alternating current rectification unit and a DC isolation unit which are connected with each other, arranging a three-phase PWM rectification circuit in the alternating current rectification unit, and arranging a phase-shifted full-bridge inverter circuit and an uncontrolled rectification circuit in the DC isolation unit;
arranging SiC-MOSFET switching tubes in the three-phase PWM rectification circuit and the phase-shifted full-bridge inverter circuit, wherein the SiC-MOSFET switching tubes are used for rectification and inversion, and current sine and unit power factor correction;
the method comprises the steps of connecting a rectifying module with a coordination control device through a CAN bus, wherein the coordination control device is used for collecting and transmitting signals inside and outside a rectifying cabinet, issuing an output voltage target value and an on/off control instruction to each rectifying module, collecting information of each rectifying module in the cabinet in real time, receiving an on/off command issued by a control cabinet, communicating with the control cabinet through RJ45/TCP, and meanwhile realizing automatic current sharing control among a plurality of rectifying modules by adopting a droop control strategy.
6. The method of claim 5, further comprising the steps of:
arranging an alternating current EMI filter, an alternating current input contactor, a three-phase current-crossing inductor and a bus supporting capacitor in the alternating current rectifying unit, and arranging a high-frequency transformer, an output filter circuit, a direct current EMI filter and a direct current input contactor in the DC isolating unit;
after the alternating current EMI filter, the alternating current input contactor and the three-phase alternating current inductor are sequentially connected in series, one end of the alternating current EMI filter is connected with a 380V alternating current bus, and the other end of the alternating current EMI filter is connected with the three-phase PWM rectifying circuit;
after the three-phase PWM rectifying circuit, the bus supporting capacitor and the phase-shifted full-bridge inverter circuit are connected in parallel, one end of the three-phase PWM rectifying circuit is connected with the three-phase alternating current inductor, and the other end of the three-phase PWM rectifying circuit is connected with the high-frequency transformer;
after the uncontrolled rectifying circuit is connected with the output filter circuit in parallel, one end of the uncontrolled rectifying circuit is connected with the high-frequency transformer, and the other end of the uncontrolled rectifying circuit is connected with the direct-current EMI filter;
and connecting one end of the direct current input contactor with the direct current EMI filter, and connecting the other end of the direct current input contactor with a direct current bus.
7. The method of claim 5, further comprising the steps of:
arranging an integrated AC/DC back plate and a plug-and-play terminal;
inserting a rectification module on the integrated alternating current and direct current back plate through the plug-and-play type terminal;
and interconnecting the alternating current rectifying unit and the DC isolating unit through the plug-and-play type terminal.
8. A control rod drive mechanism power supply, comprising:
a plurality of modular rectifier cabinets according to any of claims 1 to 5, a plurality of energy storage cabinets and a plurality of control cabinets;
one modular rectifier cabinet corresponds to one energy storage cabinet and one control cabinet;
the input end of the modular rectifier cabinet is connected to a 380V alternating current bus through an alternating current breaker, and the output end of the modular rectifier cabinet is connected with the input end of the energy storage cabinet and the input end of the control cabinet;
the control cabinet sends a control signal to the alternating current circuit breaker; the output end of the control cabinet is connected with the magnetic coil and supplies power to the magnetic coil;
the control cabinet is connected with the coordination control device in two ways.
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| CN202210809046.2A CN114977776A (en) | 2022-07-11 | 2022-07-11 | Modular rectifier cabinet, manufacturing method thereof and control rod driving mechanism power supply |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102045925A (en) * | 2010-11-02 | 2011-05-04 | 华南理工大学 | LED centralized direct-current power supply system and operating method thereof |
| CN104868507A (en) * | 2015-06-02 | 2015-08-26 | 中国核动力研究设计院 | Reactor control rod driving mechanism power supply system |
| CN106452122A (en) * | 2016-09-22 | 2017-02-22 | 许继电气股份有限公司 | Parallel coordinative running control method and control device of AC/DC direct current source |
| CN107302223A (en) * | 2017-07-10 | 2017-10-27 | 山东鲁能智能技术有限公司 | A kind of electric energy bidirectional transmission system and its control method |
| CN109696872A (en) * | 2019-02-01 | 2019-04-30 | 华南理工大学 | A kind of high frequency oxidation power supply communicated based on CAN and RS485 |
| CN216673446U (en) * | 2021-12-22 | 2022-06-03 | 保定莱特整流器股份有限公司 | Rectifier adopting CAN bus synchronous data |
-
2022
- 2022-07-11 CN CN202210809046.2A patent/CN114977776A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102045925A (en) * | 2010-11-02 | 2011-05-04 | 华南理工大学 | LED centralized direct-current power supply system and operating method thereof |
| CN104868507A (en) * | 2015-06-02 | 2015-08-26 | 中国核动力研究设计院 | Reactor control rod driving mechanism power supply system |
| CN106452122A (en) * | 2016-09-22 | 2017-02-22 | 许继电气股份有限公司 | Parallel coordinative running control method and control device of AC/DC direct current source |
| CN107302223A (en) * | 2017-07-10 | 2017-10-27 | 山东鲁能智能技术有限公司 | A kind of electric energy bidirectional transmission system and its control method |
| CN109696872A (en) * | 2019-02-01 | 2019-04-30 | 华南理工大学 | A kind of high frequency oxidation power supply communicated based on CAN and RS485 |
| CN216673446U (en) * | 2021-12-22 | 2022-06-03 | 保定莱特整流器股份有限公司 | Rectifier adopting CAN bus synchronous data |
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