CN113595417A - Electric power direct current power supply device modularization system - Google Patents
Electric power direct current power supply device modularization system Download PDFInfo
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- CN113595417A CN113595417A CN202110865097.2A CN202110865097A CN113595417A CN 113595417 A CN113595417 A CN 113595417A CN 202110865097 A CN202110865097 A CN 202110865097A CN 113595417 A CN113595417 A CN 113595417A
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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
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/268—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured for dc systems
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00304—Overcurrent protection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00309—Overheat or overtemperature protection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
- H02J7/04—Regulation of charging current or voltage
- H02J7/06—Regulation of charging current or voltage using discharge tubes or semiconductor devices
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The application discloses electric power DC power supply device modularization system includes: the management monitoring module is used for acquiring power data and feeder line states on each line, and performing fault monitoring according to the power data and the feeder line states to obtain a monitoring result; the switch type direct current power supply module provides a direct current working power supply and an alternating current working power supply specifically based on the rectifier and the voltage reduction module; the current sharing module is used for adjusting the output voltages of different modules by adopting a preset low-voltage difference current sharing technology so as to enable the output currents of the modules to be consistent; the charging module comprises a power distribution module, an AC/DC converter and a battery box and is used for charging different modules and providing direct current detection voltage; and the plug switch module is used for cutting off the fault module from the current-sharing bus by disconnecting the plug switch box when the monitoring result is that the module has a fault. The method and the device can solve the technical problems that the existing zero device assembling system is complex and cannot be suitable for more and more complex products and system scenes.
Description
Technical Field
The application relates to the technical field of power systems, in particular to a modular system of a power direct-current power supply device.
Background
At present, an intelligent maintenance-free direct current power supply screen is called a direct current screen for short, the general model is GZDW, and a microcomputer type high-frequency switch direct current power supply system is specially designed for a small-capacity system; the integrated design concept is adopted for small-sized switch stations, small-sized user transformer stations and systems, and the integrated design concept is composed of a rectification module, a monitoring module, a voltage reduction unit, a power distribution unit and a battery installation box; the device has the characteristics of small volume, simple structure, independent system formation and the like; the monitoring module adopts LCD Chinese character menu display, is perfect in system monitoring and battery automatic management functions, has a four-remote interface connected with an automatic system, provides RS485 communication interface selection, and provides three communication protocol selections of RTU, CDT and MODBUS.
The problems and the defects of the existing direct current power supply device system are as follows: 1) the design cycle is long, and the workload of process equipment and production preparation is large. The traditional product structure mode is that parts and components are directly combined to form a product. The new product design is designed from part devices, the design of parts and the whole machine is gradually completed, except a small amount of universal parts, the new product design is almost brand new, and the inheritance in production and technology is poor. According to the product structure model, the design period of a new product is long, the workload of process equipment and production preparation is large, the production line needs to be adjusted greatly or greatly, and the product updating period even takes ten years as a calculation unit. 2) The structural mode of directly forming products by parts and the prior art can not meet the requirements of complex products and system engineering, can not meet the requirement of diversified market demands, and can not adapt to the strong market competition situation.
Disclosure of Invention
The application provides an electric power direct current power supply device modular system for solve the current mode too loaded down with trivial details with zero device equipment system, work load is big, and can not be applicable to the more and more complicated product and the technical problem in the system scene.
In view of the above, a first aspect of the present application provides a modular system for an electric dc power supply apparatus, comprising: the system comprises a management monitoring module, a switch type direct current power supply module, a current equalizing module, a charging module and a plug-in switch module;
the management monitoring module is used for acquiring power data and feeder line states on each line, and performing fault monitoring according to the power data and the feeder line states to obtain a monitoring result;
the switch type direct current power supply module comprises a rectifier and a voltage reduction module, and particularly provides a direct current working power supply and an alternating current working power supply based on the rectifier and the voltage reduction module;
the current equalizing module is used for adjusting the output voltages of different modules by adopting a preset low-voltage difference current equalizing technology so as to enable the output currents of the modules to be consistent;
the charging module comprises a power distribution module, an AC/DC converter and a battery box and is used for charging different modules and providing direct current detection voltage;
and the plug switch module is used for cutting off the fault module from the current-sharing bus by disconnecting the plug switch box when the monitoring result is that the module has a fault.
Optionally, the method further includes: a detection module;
and the detection module is used for detecting the circuit voltage according to the detection voltage and detecting the temperature of the radiator.
Optionally, the method further includes: a protection circuit;
the protection circuit is used for carrying out current limiting protection and short circuit protection on the output of the charging module and carrying out overcurrent and overtemperature protection on the charging module.
Optionally, the method further includes: hot plug type digital display meter;
the hot-plug type digital display meter is used for displaying electric power data information of each module of the system, wherein the electric power data information comprises phase voltage, line current and related power.
Optionally, the current equalizing module is specifically configured to:
amplifying the collected output current of each module by adopting a preset amplification factor, and transmitting the amplified current to a current equalizing bus;
and adjusting the output voltages of different modules by adopting a preset low-voltage difference current-sharing technology, so that the output currents of the modules transmitted to the current-sharing bus are consistent.
According to the technical scheme, the embodiment of the application has the following advantages:
in this application, an electric dc power supply apparatus modular system is provided, comprising: the management monitoring module is used for acquiring power data and feeder line states on each line, and performing fault monitoring according to the power data and the feeder line states to obtain a monitoring result; the switch type direct current power supply module comprises a rectifier and a voltage reduction module, and particularly provides a direct current working power supply and an alternating current working power supply based on the rectifier and the voltage reduction module; the current sharing module is used for adjusting the output voltages of different modules by adopting a preset low-voltage difference current sharing technology so as to enable the output currents of the modules to be consistent; the charging module comprises a power distribution module, an AC/DC converter and a battery box and is used for charging different modules and providing direct current detection voltage; and the plug switch module is used for cutting off the fault module from the current-sharing bus by disconnecting the plug switch box when the monitoring result is that the module has a fault.
According to the modular system of the electric direct-current power supply device, functional devices in the system are processed in a modular mode, connecting lines among different modules and related electric power data are monitored, if faults exist, the corresponding modules are immediately cut off, and the overall operation of the system is not affected; the charging module is used for realizing the supply of different power supplies, including the detection of the required power supply; the current equalizing module can keep the consistency of the output current of each module; the working condition of each module can be accurately controlled, and the system does not need to be stopped to realize maintenance or adjustment operation. Therefore, the method and the device can solve the technical problems that the existing mode of assembling the system with the parts is too tedious, the workload is large, and the method and the device cannot be applied to more and more complex products and system scenes.
Drawings
Fig. 1 is a schematic structural diagram of a modular system of an electric dc power supply apparatus according to an embodiment of the present disclosure;
fig. 2 is a schematic diagram of a rectification operation principle of the charging module according to an embodiment of the present application.
Detailed Description
In order to make the technical solutions of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Modularization is a product of the era, is an effective means for following the diversification, decentralization, socialization, internationalization and informatization trends of the current manufacturing system as a thinking method, a working method, a design method and a new standardized form. The system has the advantages that the product structure is optimized, the production structure, the management system and the industrial structure are further optimized, the system is simplified, the standardization and the flexibility of the system structure are realized, the socialization and the specialization of production are promoted, the purpose of improving the comprehensive benefit is finally achieved, and the modularization is an effective way for enabling enterprises to move to the market.
The power direct-current power supply device modularized system in the embodiment of the application is installed on a direct-current screen, and the direct-current screen is a brand-new novel direct-current system with digital control, protection, management and measurement. The monitoring host part is highly integrated, adopts a single-board structure (All in one), and has the functions of insulation monitoring, battery routing inspection, grounding line selection, battery activation, silicon chain voltage stabilization, microcomputer central signal and the like. The host is provided with a large liquid crystal touch screen, various running states and parameters are displayed by Chinese characters, the whole design is convenient and simple, the human-computer interface is friendly, and the use habits of users are met; the direct current screen system provides powerful functions for remote detection and control, and has the functions of remote control, remote regulation, remote measurement and remote signaling and a remote communication interface; the operating parameters of the direct-current power supply system can be obtained remotely through the remote communication interface, and the operating state and the fixed value can be set and modified through the interface, so that the requirements of an electric power automation and unattended transformer substation of an electric power system are met; and a standard RS232/485 serial interface and an Ethernet interface are arranged, so that the substation automation system can be conveniently accommodated.
The modularized plug-in manufacturing of the direct current power supply can improve the specialized manufacturing level and batch processing technology of a processing factory, and can shorten the manufacturing period and the installation time. More and more design units and manufacturers concentrate on the core business of own excellence and outsource the non-core business, so that the longitudinal gathering type production chain is gradually replaced by a series of supply chains consisting of different independent entities with core competitiveness for complementary properties to provide the core output of the production chain, the cost can be reduced, a social platform is provided for knowledge flow and technical innovation, and the design and manufacturing level of the direct-current power supply industry is promoted to be continuously improved.
For ease of understanding, referring to fig. 1, an embodiment of a modular system for an electric dc power device provided herein includes: the system comprises a management monitoring module 101, a switch type direct current power supply module 102, a current equalizing module 103, a charging module 104 and a plug-in switch module 105.
And the management monitoring module 101 is configured to collect power data and feeder line states on each line, and perform fault monitoring according to the power data and the feeder line states to obtain a monitoring result. The management monitoring module can be arranged in different modules or on the whole system level, mainly acquires information, and carries out monitoring analysis according to the acquired information to obtain a monitoring result. The faults of different modules can take different measures, such as alarms or module removal and the like. For example, the work monitoring of a rectifier in a switch type direct current power supply module, the parameter monitoring of battery equipment in a charging module, the monitoring of the system alternating current and direct current distribution working state and the like; besides, the method also comprises the monitoring of the current and voltage change condition in the three-phase power supply process and the like.
In an actual system, the management monitoring module can adopt a touch screen for display, a friendly human-computer interface is realized, and working parameters and fault states are clear at a glance; the system can measure and collect battery voltage, control bus voltage, battery current, control bus current, module fault state, alternating voltage, insulation fault, battery polling function and 8-path switching value; in a specific control aspect, uniform floating charge control, uniform charge voltage, floating charge voltage and continuous and adjustable battery current limiting can be realized; and automatic management functions can be realized, such as automatic management of batteries, automatic conversion of uniform floating charge, regular uniform charge, uniform charge time and the like. The RS485 interface of the whole module can realize the four-remote function. In a specific monitoring process, a main interface displays: alternating-current voltage: single phase/three phase ac voltages can be displayed. Battery voltage: a current battery voltage; battery current: a current battery current; controlling the bus voltage: the current control bus voltage; controlling the bus current: the current of the current control bus.
It is also necessary to perform system setup for the management monitoring module, for example, battery management: setting a battery uniform float charge voltage, a uniform charge current limiting value, a battery capacity, a discharge time limit, temperature compensation and temperature compensation, wherein a compensation value is required to be set according to a temperature compensation parameter provided by a battery manufacturer, otherwise, the compensation value is set to be 0; and (3) communication setting: and a single-phase/three-phase power supply mode is set, and an alternating-current over-voltage and under-voltage alarm value is set. Insulating setting: and setting the number of branch detection units, a bus differential pressure alarm value, a branch ground resistance alarm value and an insulation flash output enable. Setting a module: the number of modules, the types of the modules and the communication protocol are set. Communication setting: setting a local address when communicating with an upper computer; the communication protocol and baud rate are not settable. Branch switch: setting branch switching value detection enabling and setting branch alarming types. D, direct current setting: and setting an over-voltage and under-voltage alarm value of the battery and an over-voltage and under-voltage alarm value of the control bus. Time setting: and setting system time and date. Battery inspection: and setting the total section number of the battery monomer type battery pack and the monomer over-voltage and under-voltage alarm value. Selecting a system voltage: the 220V or 110V or 48V system voltage is selected. Alarm delay: and the alarm sensitivity is set, and the system stability is improved. And (3) system control: and turning on and off the module, manually switching all floating charges and restarting the system.
The switch-mode dc power supply module 102 includes a rectifier and a voltage-dropping module, and specifically provides a dc working power supply and an ac working power supply based on the rectifier and the voltage-dropping module. The switch type direct current power supply module is a high-frequency switch module type direct current power supply module and is associated with the charging module and the management monitoring module. The module comprises an AC/DC charging unit, a branch data acquisition unit, a feeder state detection unit and a related meter which operate independently. The direct current power supply module can provide safe and reliable working power supplies for primary and secondary equipment, comprises a 380V/220V alternating current power supply and a 48V direct current power supply for communication, and is suitable for transformer substations, distribution substations, power plants and other alternating current and direct current power supply places of mobile machine rooms.
In an actual circuit system, the output of a rectifier is connected to a direct current distribution part through a bus copper bar, and the direct current distribution provides load output. The management monitoring module can automatically monitor and control various parameters and working states of all rectifier modules, alternating current/direct current power distribution, batteries and other equipment in the direct current power supply module, and stores or displays information after the information is processed, and can be set according to specific requirements, so that repeated description is omitted. The DC power supply module can also work independently without monitoring, but will lose the function of 'three remote'. When the mains supply is in failure, namely when the voltage of the battery is continuously reduced to 42V (can be set), the backup battery is put into operation, and the system gives out sound and light alarm.
The DC power supply module adopts a unified lightning protection design, and B, C, D-level lightning protection measures (optional) are configured:
the class-B lightning protection is power lightning protection, belongs to a class-B lightning arrester, is applied to a main power distribution cabinet, has large flux, and has the protection capability of 120KA, in the process of discharging lightning current, residual voltage generated at two ends of the class-B lightning arrester can be discharged again by a class-C or class-D lightning arrester arranged at the front end of equipment even if the residual voltage still exceeds the highest transient voltage withstanding value of the protected equipment, so that the positive surge voltage of a real front line end of the equipment is very low, the normal operation of the equipment cannot be influenced at all, and the equipment is reliably protected.
And 2, C-level lightning protection measures: the C-level lightning protection device is installed on the working bus side of the alternating current power supply screen and used as third-level lightning protection, and residual surge voltage on the load side can be further limited. The damage of surge impact to equipment is reduced to the minimum, and the safe operation of loop equipment is guaranteed. The rated impulse current of the class C lightning protector is 20KA, and the maximum impulse current is 40 KA.
D-level lightning protection measures: the rectifier module is internally provided with a piezoresistor, the protection capability of the piezoresistor can reach 5KA, residual surge current is effectively absorbed, surge voltage is limited, and the safe and stable operation of the rectifier is ensured.
And the current sharing module 103 is used for adjusting the output voltages of different modules by adopting a preset low-voltage difference current sharing technology so as to enable the output currents of the modules to be consistent.
Further, the current sharing module 103 is specifically configured to:
amplifying the collected output current of each module by adopting a preset amplification factor, and transmitting the amplified current to a current equalizing bus;
the output voltages of different modules are adjusted by adopting a preset low-voltage difference current-sharing technology, so that the output currents of the modules transmitted to a current-sharing bus are consistent.
The parallel operation of a plurality of modules has good current-sharing characteristic, carries out voltage comparison operation according to the voltage on the bus that flow equalizes, adjusts the output voltage of module after error amplification, makes the output current of each module unanimous, makes it equally divide the load unbalance degree and be less than 3%, when the module breaks down like this, can break away from the bus that flow equalizes automatically, does not influence the normal operating of other modules.
The charging module 104 includes a power distribution module, an AC/DC converter, and a battery box for charging the various modules and providing a DC detection voltage.
The charging module comprises an AC/DC rectification part and a DC/DC part and also comprises some auxiliary power supplies besides a power distribution module, an AC/DC converter and a battery box. The front-stage bridge rectifier in the charging module is used for rectifying alternating current into smooth direct current voltage, and the rear-stage DC/DC circuit consists of a DC/DC converter, a control circuit thereof and a rectifier filter output, is used for converting the front-stage rectified voltage into stable direct current detection voltage output of an electric power operation system, and can be used for various detection items.
In an actual system, please refer to fig. 2 for a schematic diagram of a rectification operation of a charging module, the charging module is composed of two power parts of AC/DC rectification and DC/DC rectification, and an auxiliary power supply and an input/output detection protection circuit are further provided in addition to the two power parts. The front-stage bridge rectification is used for rectifying alternating current into smooth direct current voltage, and the rear-stage DC/DC circuit is composed of a DC/DC converter, a control circuit thereof, a rectification filter output and the like and is used for converting the front-stage rectification voltage into stable direct current voltage output required by an electric power operating system. The direct-current voltage output and input detection circuit realizes the detection of input overvoltage, undervoltage, overvoltage and the like. The detection and protection circuit of the DC/DC comprises the detection of output voltage and current, the detection of the temperature of a radiator and the like, and all signals are used for the control and protection of the DC/DC.
And the plug-in switch module 105 is used for cutting off the fault module from the current-sharing bus by disconnecting the plug-in switch box when the monitoring result is that the module has a fault.
The pluggable switch module comprises a plurality of pluggable switch boxes, wherein the pluggable switch boxes are arranged on the cabinet body in an actual system, and two pluggable switch boxes are generally arranged, so that the pluggable switch module is also called as a hot plug switch box because the pluggable switch operation which does not influence the normal operation of the system is realized; in addition, the cabinet body is also internally provided with an independent storage battery drawer, a plurality of feeder terminals and a plurality of remote signal terminals. It can be understood that the hot plug monitoring device can be installed on the hot plug switch box, so as to control the working state of the hot plug switch box.
Further, still include: a detection module 106;
and the detection module is used for detecting the circuit voltage according to the detection voltage and detecting the temperature of the radiator. And feeder line state detection, current signal detection and the like can be performed, which is not described in detail. For example, the dc detection voltage input detection circuit in the charging module may be used to implement the detection of input over-voltage, under-voltage, and over-voltage.
Further, still include: a protection circuit 107;
and the protection circuit is used for performing current-limiting protection and short-circuit protection on the output of the charging module and performing overcurrent and overtemperature protection on the charging module. The detection module and the protection circuit are closely connected with the charging module, the detection of output voltage and current and the detection of the temperature of the radiator can be realized, and all signals can be used for controlling and protecting DC/DC.
Specifically, different alarm operations can be implemented according to different protection operations; input over/under voltage protection: the module has an input over/under voltage protection function. When the input voltage is smaller than the undervoltage set value or larger than the overvoltage set value, the module is protected, no direct current is output, and the alarm indicator lamp flickers. And after the voltage is restored to the normal range, the module automatically restores to work. Outputting overvoltage protection/undervoltage alarm: the module has the function of outputting overvoltage protection and undervoltage alarm. When the output voltage is larger than the overvoltage set value, the module protects, no direct current is output, and the alarm indicator lamp flickers. The module cannot be automatically recovered and must be powered up again after being powered off. When the output voltage is smaller than the undervoltage set value, the module gives an alarm, and if the output voltage is larger than the undervoltage set value, the module gives an alarm, and the alarm indicator lamp flickers. After the voltage recovers, the module output under-voltage alarm disappears. Short-circuit protection: the short-circuit protection adopts a retraction droop current-limiting mode, the module instantly reduces the output voltage to zero when outputting short circuit, and the short-circuit current is limited to be below 15% of the rated output current. The module can work in a short circuit state for a long time without damage, and the module can automatically recover to work after the fault is eliminated. And (3) over-temperature protection: when the module detects that the temperature of the radiator exceeds about 85 ℃, the module is automatically turned off for protection, and the module is automatically started after the temperature is reduced. Output current limiting protection: the maximum limit of the output current of each module is 1.05 times of the rated output current. And (3) module parallel protection: a parallel protection circuit is arranged in the module, and the module automatically quits the system when in fault, so that the normal work of other modules is not influenced. And (3) fault display: and displaying the module alarm information on the LED in real time in the form of fault codes. At this time, the display content of the LED is changed into a fault code, and the voltage is displayed after the display switching button is pressed. Communication function: the module communicates with the monitoring system in an RS485 mode. And sending the module output voltage and current, module protection and alarm information to a monitoring system, and receiving and executing a control command issued by the monitoring system. And different fault types can be indicated by the indicating lamps without colors, so that more visual warning is realized.
Further, still include: hot plug type digital display meter 108;
the hot-plug type digital display meter is used for displaying electric power data information of each module of the system, wherein the electric power data information comprises phase voltage, line current and related power. The hot plug type digital display meter is also arranged on the cabinet body, so that information can be conveniently checked.
According to the modular system of the electric direct-current power supply device, functional devices in the system are processed in a modular mode, connecting lines among different modules and related electric power data are monitored, if faults exist, the corresponding modules are immediately cut off, and the overall operation of the system is not affected; the charging module is used for realizing the supply of different power supplies, including the detection of the required power supply; the current equalizing module can keep the consistency of the output current of each module; the working condition of each module can be accurately controlled, and the system does not need to be stopped to realize maintenance or adjustment operation. Therefore, the technical problems that the conventional mode of assembling the system with the parts is too tedious, the workload is large, and the system cannot be suitable for more and more complex products and system scenes can be solved.
The direct current product modular plug-in design is based on an established general model series, has the advantages of resource sharing and strong inheritance, can reduce low-level repeated labor, and has short product research and development period; the module is repeatedly used and optimized, the process is stable, the quality is good, and the reliability is high; the modularized plug-in type product has high generalization and serialization degree, less varieties of parts and can reduce the cost of the whole process. Therefore, the application of the modular plug-in design concept is beneficial to the universality and interchangeability of the direct-current power supply, the direct-current power supply is easy to maintain, the maintenance time can be shortened, the power failure loss can be reduced, and the power supply quality can be improved.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for executing all or part of the steps of the method described in the embodiments of the present application through a computer device (which may be a personal computer, a server, or a network device). And the aforementioned storage medium includes: a U disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (5)
1. A modular system for an electrical dc power unit, comprising: the system comprises a management monitoring module, a switch type direct current power supply module, a current equalizing module, a charging module and a plug-in switch module;
the management monitoring module is used for acquiring power data and feeder line states on each line, and performing fault monitoring according to the power data and the feeder line states to obtain a monitoring result;
the switch type direct current power supply module comprises a rectifier and a voltage reduction module, and particularly provides a direct current working power supply and an alternating current working power supply based on the rectifier and the voltage reduction module;
the current equalizing module is used for adjusting the output voltages of different modules by adopting a preset low-voltage difference current equalizing technology so as to enable the output currents of the modules to be consistent;
the charging module comprises a power distribution module, an AC/DC converter and a battery box and is used for charging different modules and providing direct current detection voltage;
and the plug switch module is used for cutting off the fault module from the current-sharing bus by disconnecting the plug switch box when the monitoring result is that the module has a fault.
2. The powered dc power supply unit modular system of claim 1, further comprising: a detection module;
and the detection module is used for detecting the circuit voltage according to the detection voltage and detecting the temperature of the radiator.
3. The powered dc power supply unit modular system of claim 2, further comprising: a protection circuit;
the protection circuit is used for carrying out current limiting protection and short circuit protection on the output of the charging module and carrying out overcurrent and overtemperature protection on the charging module.
4. The powered dc power supply unit modular system of claim 1, further comprising: hot plug type digital display meter;
the hot-plug type digital display meter is used for displaying electric power data information of each module of the system, wherein the electric power data information comprises phase voltage, line current and related power.
5. The modular system of an electric dc power supply according to claim 1, wherein the current sharing module is specifically configured to:
amplifying the collected output current of each module by adopting a preset amplification factor, and transmitting the amplified current to a current equalizing bus;
and adjusting the output voltages of different modules by adopting a preset low-voltage difference current-sharing technology, so that the output currents of the modules transmitted to the current-sharing bus are consistent.
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