CN116742784A - DC distribution network distribution equipment and distribution method - Google Patents
DC distribution network distribution equipment and distribution method Download PDFInfo
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- CN116742784A CN116742784A CN202310954682.9A CN202310954682A CN116742784A CN 116742784 A CN116742784 A CN 116742784A CN 202310954682 A CN202310954682 A CN 202310954682A CN 116742784 A CN116742784 A CN 116742784A
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- 238000009826 distribution Methods 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims description 12
- 238000006243 chemical reaction Methods 0.000 claims abstract description 61
- 238000012544 monitoring process Methods 0.000 claims abstract description 59
- 238000004146 energy storage Methods 0.000 claims abstract description 43
- 238000010248 power generation Methods 0.000 claims abstract description 34
- 230000005540 biological transmission Effects 0.000 claims abstract description 31
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 238000003860 storage Methods 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 claims description 3
- 230000007774 longterm Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 4
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- 230000006855 networking Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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Classifications
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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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
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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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
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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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a direct-current distribution network distribution device which comprises a monitoring energy storage system, a regulation and control switching system and a power transmission system, wherein the monitoring energy storage system comprises an alternating current monitoring module, a direct-current monitoring module and a power generation energy storage module; according to the invention, the regulation and control switching system is arranged, so that the single-type current can be divided and converted to keep normal power supply of household loads with different current types under the condition of alternating current or direct current outage, the switching is quick and has good applicability, meanwhile, the use of electric elements in the household loads is reduced through automatic conversion, the manufacturing and purchasing cost is reduced, and the converter on the power grid can be directly replaced when the electric elements with the current conversion are damaged, so that the electric energy conversion device is very convenient.
Description
Technical Field
The invention relates to the technical field of direct-current power distribution, in particular to power distribution equipment and a power distribution method of a direct-current power distribution network.
Background
Compared with an alternating current power distribution network, the direct current power distribution network is characterized in that a direct current bus is provided for a load, the direct current load can be directly powered by the direct current bus, the alternating current load needs to be powered after passing through an inverter device, and if the direct current load proportion in the load is larger, the direct current power distribution network has a larger advantage; the direct-current power distribution network has small line loss, high reliability, no need of phase frequency control and strong capacity of receiving distributed power sources.
The current distribution method is to use independent AC and DC distribution methods, when the method is used, the power failure of the load of the household appliance is stopped when the AC or DC is emergently powered off, so that the inconvenience of life of residents is caused, and the current appliances are added with rectifiers or inverters to adapt to different types of power grids when being produced, so that the manufacturing cost of the appliances is increased, meanwhile, a large number of household appliances are provided with the electric elements, and the electric elements need to be overhauled and replaced for many times when damaged, so that the invention provides a DC distribution network distribution device and a distribution method to solve the problems in the prior art.
Disclosure of Invention
In view of the above problems, the present invention aims to provide a dc power distribution network power distribution device and a power distribution method, where a regulation and control switching system is provided to enable single-type current to be split and converted to keep normal power supply of different current types of household loads under the condition of ac or dc power failure, the switching is fast and applicable, meanwhile, the use of internal electrical components of the household loads is reduced through automatic conversion, the manufacturing and purchase costs are reduced, and when the electrical components of the current conversion are damaged, the converter on the power grid can be directly replaced, which is very convenient.
In order to achieve the purpose of the invention, the invention is realized by the following technical scheme: the utility model provides a direct current distribution network distribution equipment, includes monitoring energy storage system, regulation and control switching system and transmission system, monitoring energy storage system includes alternating current monitoring module, direct current monitoring module and electricity generation energy storage module, alternating current monitoring module is used for detecting alternating current line power supply state, triggers immediately when the commercial alternating current has a power failure and regulates and control switching system and switch over power supply mode and shunt conversion current type, direct current monitoring module monitors direct current power generation's power supply state based on direct current sensor, detects direct current power generation's electric energy conversion fluctuation data in the time of monitoring power supply state, networking combines weather condition to judge whether power generation equipment trouble has occurred, electricity generation energy storage module carries out the energy conversion and carries out direct current storage based on solar cell panel and domestic wind-driven generator, regulation and control switching system includes energy supply switching module, current conversion module and accuse voltage module, energy supply switching module is used for automatic switch over independent one kind of power supply mode and the control that standby power supply starts after alternating current or direct current outage, current conversion module is used for carrying out the conversion to the electric current type of independent power supply mode, cuts off the outage power supply input and converts another kind of current to the outage type current output power supply, the accuse module is used for carrying out the voltage regulation to step-down type of current type after the conversion, and the domestic transmission system is used for carrying out the regulation to direct current load after the regulation.
The further improvement is that: the alternating current monitoring module comprises a current monitoring sub-module and a line protection sub-module, wherein the current monitoring sub-module acquires alternating current real-time signal data based on an alternating current sensor and transmits the acquired real-time data to the energy supply switching module to automatically switch a power supply mode, and the line protection sub-module is used for timely cutting off alternating current input of a commercial power grid when a large current is detected to pass through so as to protect safe use of household appliances.
The further improvement is that: the power generation and energy storage module comprises a conversion power generation sub-module, a parallel flow sub-module and an electric energy storage sub-module, wherein the conversion power generation sub-module converts natural energy of a house into direct current electric energy based on a wind driven generator, a solar panel and geothermal power generation equipment, natural renewable resources are fully utilized, the power generation and energy storage module is environment-friendly, the parallel flow sub-module transmits electric energy converted by different types of energy in parallel flow, the electric energy storage sub-module stores the generated direct current electric energy in a multi-mode manner and stores standby electric energy based on an energy storage battery and a super capacitor, and the standby electric energy is started under the condition that commercial alternating current and direct current power supply are all powered off so as to maintain the domestic electric appliance to continuously run in a short time.
The further improvement is that: the energy supply switching module comprises a category judging sub-module and an intelligent switching sub-module, wherein the category judging sub-module is used for judging and confirming the combined power supply type according to the monitoring state data of the monitoring energy storage system, confirming the current type of the power-off part, generating a switching signal and transmitting the switching signal to the intelligent switching sub-module, and the intelligent switching sub-module is used for automatically switching to single alternating current or single direct current according to the switching signal generated by the judging result.
The further improvement is that: the current conversion module comprises an alternating current conversion sub-module and a direct current conversion sub-module, wherein the alternating current conversion sub-module is used for shunting the stored direct current after the stored direct current is powered off and converting the alternating current into direct current to be output and supplied with power through a rectifier, and the direct current conversion sub-module is used for shunting the stored direct current after the alternating current is powered off and converting the stored direct current into the alternating current to be output and supplied with power through an inverter.
The further improvement is that: the voltage control module comprises an alternating current regulation and control submodule and a direct current regulation and control submodule, wherein the alternating current regulation and control submodule is used for carrying out step-up or step-down treatment on the voltage of the input alternating current and the alternating current after direct current conversion, and the direct current regulation and control submodule is used for carrying out step-up or step-down treatment on the direct current voltage output by direct current energy storage and the direct current voltage converted by the alternating current.
The further improvement is that: the power transmission system comprises an alternating current power transmission module, a direct current power transmission module and a line monitoring module, wherein the alternating current power transmission module is used for transmitting alternating current to an alternating current household load, the direct current power transmission module is used for transmitting direct current to the direct current household load, and the line monitoring module is used for carrying out real-time fault monitoring on a power transmission line and alarming and reminding in time when line faults are detected.
A method of distributing power to a dc distribution network power distribution device, comprising the steps of:
step one, utilizing a power generation and energy storage module to convert electric energy of renewable green energy sources in sunny days, and converting the electric energy into direct current for storage;
step two, after the AC monitoring module detects that commercial AC power is cut off, the energy supply switching module is started, the AC power transmission module is switched and connected to the power generation and energy storage module, and the DC stored in power generation is converted into AC through the current conversion module to be regulated and controlled and then output;
step three, in the long-term overcast and rainy weather, when the direct current monitoring module monitors that the power generation and energy storage module cannot provide direct current for power failure, the energy supply switching module is started, and the input of commercial alternating current is converted into direct current through the current conversion module and then is output after being regulated and controlled;
and step four, after directional conversion and output of the current, supplying power to household alternating current load and direct current load through a power transmission system and monitoring a line in real time.
The beneficial effects of the invention are as follows: according to the invention, the regulation and control switching system is arranged, so that the normal power supply of household loads with different current types can be maintained by single-type current shunt conversion under the condition of alternating current or direct current outage, the switching is quick and has good applicability, meanwhile, the use of electric elements in the household loads is reduced through automatic conversion, the manufacturing and purchasing cost is reduced, the converter on the power grid can be directly replaced when the electric elements with current conversion are damaged, the electric elements with current conversion are very convenient, and the problems that the electric elements are troublesome to replace and the power transmission type cannot be automatically switched in the prior art are effectively solved.
Drawings
FIG. 1 is a system architecture diagram of an embodiment 1 of the present invention.
Fig. 2 is a schematic diagram of a commercial ac power conversion architecture according to embodiment 1 of the present invention.
Fig. 3 is a diagram of a dc power-off power supply conversion structure according to embodiment 1 of the present invention.
Fig. 4 is a flowchart illustrating the operation of the power distribution method according to embodiment 2 of the present invention.
Detailed Description
The present invention will be further described in detail with reference to the following examples, which are only for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention.
Example 1
According to the embodiment, the power distribution equipment for the direct-current distribution network comprises a monitoring energy storage system, a regulation and control switching system and a power transmission system, wherein the monitoring energy storage system comprises an alternating current monitoring module, a direct-current monitoring module and a power generation energy storage module, and the regulation and control switching system comprises an energy supply switching module, a current conversion module and a voltage control module.
The alternating current monitoring module is used for detecting the power supply state of an alternating current circuit, when commercial alternating current power failure occurs, the alternating current monitoring module immediately triggers the regulation and control switching system to switch the power supply mode and shunts the conversion current types, the alternating current monitoring module comprises a current monitoring sub-module and a circuit protection sub-module, the current monitoring sub-module acquires alternating current real-time signal data based on an alternating current sensor and transmits the acquired real-time data to the energy supply switching module to automatically switch the power supply mode, and the circuit protection sub-module is used for timely cutting off the alternating current input of a commercial power grid when detecting that high current passes through so as to protect the safe use of household appliances.
The direct current monitoring module monitors the power supply state of direct current power generation based on the direct current sensor, detects the power conversion fluctuation data of the direct current power generation while monitoring the power supply state, and judges whether the power generation equipment fails according to the networking and weather conditions.
The power generation and energy storage module is used for carrying out energy conversion and direct current storage based on a solar panel and a household wind driven generator, comprises a conversion and power generation sub-module, a parallel flow sub-module and an electric energy storage sub-module, the conversion and power generation sub-module is used for converting residential natural energy into direct current electric energy based on the wind driven generator, the solar panel and geothermal power generation equipment, natural renewable resources are fully utilized, the environment is protected, electric energy converted by different types of energy is transmitted in parallel flow by the parallel flow sub-module, the electric energy storage sub-module is used for carrying out multi-mode storage and standby electric energy storage on the generated direct current electric energy based on an energy storage battery and a super capacitor, and the standby electric energy is started under the condition that commercial alternating current and direct current power supply are all powered off so as to maintain the short-time continuous operation of the household electrical appliance.
The energy supply switching module is used for automatically switching an independent power supply mode and controlling the starting of a standby power supply after the alternating current or the direct current is powered off, the energy supply switching module comprises a category judging sub-module and an intelligent switching sub-module, the category judging sub-module is used for judging and confirming the combined power supply type according to the monitoring state data of the monitoring energy storage system, confirming the current type of the power-off part and generating a switching signal to be transmitted to the intelligent switching sub-module, and the intelligent switching sub-module is used for automatically switching the switching signal generated according to the judging result to single alternating current or single direct current to be input.
The current conversion module is used for converting the current type of the independent power supply mode, cutting off the power supply input and converting the other current into the power supply type current output power supply, the current conversion module comprises an alternating current conversion sub-module and a direct current conversion sub-module, the alternating current conversion sub-module is used for shunting the alternating current after the stored direct current is powered off and converting the alternating current into the direct current output power supply through a rectifier, and the direct current conversion sub-module is used for shunting the stored direct current after the alternating current is powered off and converting the stored direct current into the alternating current output power supply through an inverter.
The voltage control module is used for carrying out voltage boosting and voltage reducing regulation on the converted current type voltage, and comprises an alternating current regulation and control submodule and a direct current regulation and control submodule, wherein the alternating current regulation and control submodule is used for carrying out voltage boosting or voltage reducing treatment on the input alternating current and the alternating current voltage after direct current conversion, and the direct current regulation and control submodule is used for carrying out voltage boosting or voltage reducing treatment on the direct current voltage output by direct current energy storage and the direct current voltage after direct current conversion.
The power transmission system is used for transmitting the regulated current to household alternating current and direct current loads, and comprises an alternating current power transmission module, a direct current power transmission module and a line monitoring module, wherein the alternating current power transmission module is used for transmitting alternating current to the alternating current household loads, the direct current power transmission module is used for transmitting direct current to the direct current household loads, the line monitoring module is used for carrying out real-time fault monitoring on a power transmission line, and timely alarming and reminding are carried out when line faults are detected.
Example 2
According to fig. 4, the embodiment provides a power distribution method of a dc power distribution network power distribution device, which includes the following steps:
step one, utilizing a power generation and energy storage module to convert electric energy of renewable green energy sources in sunny days, and converting the electric energy into direct current for storage;
step two, after the AC monitoring module detects that commercial AC power is cut off, the energy supply switching module is started, the AC power transmission module is switched and connected to the power generation and energy storage module, and the DC stored in power generation is converted into AC through the current conversion module to be regulated and controlled and then output;
step three, in the long-term overcast and rainy weather, when the direct current monitoring module monitors that the power generation and energy storage module cannot provide direct current for power failure, the energy supply switching module is started, and the input of commercial alternating current is converted into direct current through the current conversion module and then is output after being regulated and controlled;
and step four, after directional conversion and output of the current, supplying power to household alternating current load and direct current load through a power transmission system and monitoring a line in real time.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides a direct current distribution network distribution equipment which characterized in that: including monitoring energy storage system, regulation and control switching system and transmission system, monitoring energy storage system includes alternating current monitoring module, direct current monitoring module and electricity generation energy storage module, alternating current monitoring module is used for detecting alternating current line power supply state, direct current monitoring module is based on direct current sensor monitoring direct current power generation's power supply state, electricity generation energy storage module carries out the energy conversion and carries out direct current storage based on solar cell panel and domestic aerogenerator, regulation and control switching system includes energy supply switching module, current conversion module and accuse voltage module, energy supply switching module is used for automatic switch-over single one kind of power supply mode after alternating current or direct current outage, current conversion module is used for converting the electric current type of single power supply mode, accuse voltage module is used for carrying out step-up and step-down regulation to the voltage of electric current type after the conversion, transmission system is used for carrying domestic alternating current and direct current load with the electric current after adjusting.
2. A direct current distribution network distribution device according to claim 1, characterized in that: the alternating current monitoring module comprises a current monitoring sub-module and a line protection sub-module, wherein the current monitoring sub-module is used for acquiring alternating current real-time signal data based on an alternating current sensor, and the line protection sub-module is used for timely cutting off alternating current input of a commercial power grid when detecting that a large current passes.
3. A direct current distribution network distribution device according to claim 1, characterized in that: the power generation and energy storage module comprises a conversion power generation sub-module, a parallel flow sub-module and an electric energy storage sub-module, wherein the conversion power generation sub-module converts residential natural energy into direct-current electric energy based on a wind driven generator, a solar panel and geothermal power generation equipment, the parallel flow sub-module transmits electric energy converted by different types of energy in parallel flow, and the electric energy storage sub-module stores the generated direct-current electric energy in a multi-mode manner and stores standby electric energy based on an energy storage battery and a super capacitor.
4. A direct current distribution network distribution device according to claim 1, characterized in that: the energy supply switching module comprises a category judging sub-module and an intelligent switching sub-module, wherein the category judging sub-module is used for judging and confirming the combined power supply type according to the monitoring state data of the monitoring energy storage system, and the intelligent switching sub-module is used for automatically switching to single alternating current or single direct current input according to a judging result.
5. A direct current distribution network distribution device according to claim 1, characterized in that: the current conversion module comprises an alternating current conversion sub-module and a direct current conversion sub-module, wherein the alternating current conversion sub-module is used for shunting the stored direct current after the stored direct current is powered off and converting the alternating current into direct current to be output and supplied with power through a rectifier, and the direct current conversion sub-module is used for shunting the stored direct current after the alternating current is powered off and converting the stored direct current into the alternating current to be output and supplied with power through an inverter.
6. A direct current distribution network distribution device according to claim 1, characterized in that: the voltage control module comprises an alternating current regulation and control submodule and a direct current regulation and control submodule, wherein the alternating current regulation and control submodule is used for carrying out step-up or step-down treatment on the voltage of the input alternating current and the alternating current after direct current conversion, and the direct current regulation and control submodule is used for carrying out step-up or step-down treatment on the direct current voltage output by direct current energy storage and the direct current voltage converted by the alternating current.
7. A direct current distribution network distribution device according to claim 1, characterized in that: the power transmission system comprises an alternating current power transmission module, a direct current power transmission module and a line monitoring module, wherein the alternating current power transmission module is used for transmitting alternating current to an alternating current household load, the direct current power transmission module is used for transmitting direct current to the direct current household load, and the line monitoring module is used for monitoring faults of a power transmission line in real time.
8. The power distribution method of the direct-current power distribution network power distribution equipment is characterized by comprising the following steps of:
step one, utilizing a power generation and energy storage module to convert electric energy of renewable green energy sources in sunny days, and converting the electric energy into direct current for storage;
step two, after the AC monitoring module detects that commercial AC power is cut off, the energy supply switching module is started, the AC power transmission module is switched and connected to the power generation and energy storage module, and the DC stored in power generation is converted into AC through the current conversion module to be regulated and controlled and then output;
step three, in the long-term overcast and rainy weather, when the direct current monitoring module monitors that the power generation and energy storage module cannot provide direct current for power failure, the energy supply switching module is started, and the input of commercial alternating current is converted into direct current through the current conversion module and then is output after being regulated and controlled;
and step four, after directional conversion and output of the current, supplying power to household alternating current load and direct current load through a power transmission system and monitoring a line in real time.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310954682.9A CN116742784A (en) | 2023-08-01 | 2023-08-01 | DC distribution network distribution equipment and distribution method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310954682.9A CN116742784A (en) | 2023-08-01 | 2023-08-01 | DC distribution network distribution equipment and distribution method |
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| CN116742784A true CN116742784A (en) | 2023-09-12 |
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| CN202310954682.9A Pending CN116742784A (en) | 2023-08-01 | 2023-08-01 | DC distribution network distribution equipment and distribution method |
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| Country | Link |
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| CN (1) | CN116742784A (en) |
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- 2023-08-01 CN CN202310954682.9A patent/CN116742784A/en active Pending
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