CN117013608A - Auxiliary unit power supply system of light storage intelligent generator set - Google Patents
Auxiliary unit power supply system of light storage intelligent generator set Download PDFInfo
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- CN117013608A CN117013608A CN202311231938.XA CN202311231938A CN117013608A CN 117013608 A CN117013608 A CN 117013608A CN 202311231938 A CN202311231938 A CN 202311231938A CN 117013608 A CN117013608 A CN 117013608A
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- power supply
- storage battery
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- 238000004146 energy storage Methods 0.000 claims abstract description 78
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 62
- 238000010248 power generation Methods 0.000 claims abstract description 12
- 238000004321 preservation Methods 0.000 claims abstract description 11
- 239000000295 fuel oil Substances 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000005286 illumination Methods 0.000 claims abstract description 6
- 230000003287 optical effect Effects 0.000 claims abstract description 5
- 238000004891 communication Methods 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 239000010705 motor oil Substances 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 238000010992 reflux Methods 0.000 claims description 3
- 239000002918 waste heat Substances 0.000 claims description 3
- 230000000295 complement effect Effects 0.000 abstract description 3
- 238000004134 energy conservation Methods 0.000 abstract description 3
- 239000010721 machine oil Substances 0.000 abstract description 3
- 239000000446 fuel Substances 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241001672018 Cercomela melanura Species 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009295 sperm incapacitation Effects 0.000 description 1
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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/388—Islanding, i.e. disconnection of local power supply from the network
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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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
-
- 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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
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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
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
-
- 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
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
-
- 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
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
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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
- H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
- H02J7/1415—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle with a generator driven by a prime mover other than the motor of a vehicle
-
- 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
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S10/00—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power
- H02S10/10—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power including a supplementary source of electric power, e.g. hybrid diesel-PV energy systems
-
- 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
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/10—The dispersed energy generation being of fossil origin, e.g. diesel generators
-
- 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
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic origin
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses an auxiliary unit power supply system of an optical storage intelligent generator set, which comprises: the photovoltaic power generation system comprises a power generation unit, a photovoltaic panel, a photovoltaic controller, an energy storage battery, a battery management system, a bidirectional converter, a fast change-over switch, a contactor, a distribution switch and a bypass switch; the auxiliary unit of the generator set comprises a starting battery charger, a water jacket heater, a machine oil preheater, a fuel oil electric tracing heat preservation device and illumination; the invention has the advantages that: providing a multi-energy complementary multi-power supply scheme for auxiliary units of the island scene generator set, and solving scene demands of highland, far-field, sea island, various project campsites, island energy stations and the like; the light firewood storage is coordinated and complemented, seamless switching of operation modes is realized through a rapid switching system, and the reliability and the electric energy quality of the system are improved; the photovoltaic green clean energy is preferentially utilized, so that energy conservation and emission reduction are realized.
Description
Technical Field
The invention relates to a photovoltaic energy storage auxiliary unit power supply system, in particular to a photovoltaic energy storage intelligent generator set auxiliary unit power supply system, and belongs to the technical field of generator set auxiliary unit power supply systems.
Background
The auxiliary unit of the generator set is a basic guarantee of whether the generator set can be reliably started and operated, and the operation of the auxiliary unit needs a reliable power supply system to support. In non-grid island scenes, such as motor power supply vehicles, engineering project camp power stations, highland and far-field island power stations, the only power supply for supplying power to the auxiliary units is the generator set; distributed energy stations are also often configured with backup generator sets to enhance total station emergency security capabilities. The working power supply and the standby power supply of the scenes adopt a large number of diesel generating sets, and the auxiliary unit power can only be used in stations or the generating sets are self-sufficient. In the prior art, the operation scheme investment is increased to limit the standby state time of the standby generator set according to the environmental conditions, or whether the load is needed or not is always ensured to have a power supply to operate so as to supply power for the auxiliary unit, so that the generator set is prevented from losing the starting capability under the severe environment; the auxiliary unit is additionally provided with a fuel unit, a fuel preheater and other devices; and the investment of equipment heat preservation technology is increased. These measures not only increase the power consumption and emission in the station, but also put a strict limit on the allowable duration of the stand-by state of the equipment under different environmental conditions, and in severe environments, the shutdown or improper stand-by time management of the generator set can cause the incapacitation of starting when emergency needs, even the total station loses the black start capability; in addition, the fuel power plant and the heat preservation process system are provided with higher configuration requirements, and the system structure is complex. The single self-contained power architecture of the auxiliary unit power reduces the overall reliability, economy and flexibility of the energy station/plant.
Disclosure of Invention
In order to solve the problems, the invention designs the auxiliary unit power supply system of the light storage intelligent generator set, which can fully utilize green clean energy, adopts a multi-energy complementary multi-power supply scheme, provides continuous and reliable electric energy guarantee for the auxiliary unit of the generator set, improves the reliability of the whole system, and simultaneously realizes energy conservation and emission reduction.
The technical scheme of the invention is as follows:
the utility model provides an intelligent generating set auxiliary unit power supply system is stored up to light, power supply system includes: the photovoltaic power generation system comprises a power generation unit, a photovoltaic panel, a photovoltaic controller, an energy storage battery, a battery management system, a bidirectional converter, a fast change-over switch, a contactor, a power distribution switch and a bypass switch; the auxiliary unit of the generator set comprises a starting battery charger, a water jacket heater, a machine oil preheater, a fuel oil electric tracing heat preservation device and illumination;
the specific connection relation is as follows:
the power output of the generator set is connected to the input end of the contactor, the output end of the contactor is electrically connected with the input end of the quick change-over switch, and the output end of the quick change-over switch is electrically connected with the alternating-current side of the bidirectional converter;
the photovoltaic panel is electrically connected with the input end of the photovoltaic controller, the output end of the photovoltaic controller charges the energy storage battery and is electrically connected with the direct current side of the bidirectional converter, the direct current side of the bidirectional converter charges the energy storage battery, and the energy storage battery discharges through the direct current side of the bidirectional converter;
the battery management system collects the temperature, voltage and current of the energy storage battery and calculates the capacity SOC of the energy storage battery;
the output end of the quick change-over switch is connected with the alternating current side of the bidirectional converter and then is electrically connected with the input end of the distribution switch, the output end of the distribution switch provides a total power supply for an auxiliary unit of the generator set and supplies power for the starting battery charger, the water jacket heater, the engine oil preheater, the fuel oil electric tracing heat preservation device and illumination;
the output power of the generator set is connected with the input end of the bypass switch, and the output end of the bypass switch is connected with the output end of the distribution switch; the bypass switch and the distribution switch are controlled by safety interlocking;
the bidirectional converter, the battery management system and the photovoltaic controller are connected through CAN communication to form a first CAN network, and the bidirectional converter is connected with the fast switch through CAN communication to form a second CAN network; the generator set is connected with the bidirectional converter by adopting a control signal;
the photovoltaic panel, the photovoltaic controller, the energy storage battery, the battery management system and the bidirectional converter form a photovoltaic energy storage power supply system, which is called as a photovoltaic energy storage power supply for short.
Some application scenes, such as a field motor power supply vehicle, are limited in the photovoltaic energy storage capacity, and key load ranges closely related to the auxiliary units and the generator set are reasonably matched with the photovoltaic energy storage capacity so as to ensure that the auxiliary units of the generator set work normally.
The photovoltaic controller is used for controlling the electric energy output of the photovoltaic panel to generate electricity and charging the energy storage battery;
the energy storage battery is used for storing the power generation electric energy of the photovoltaic panel and providing direct current power when discharging;
the battery management system collects the voltage, current and temperature of the energy storage battery in real time and calculates the SOC value of the energy storage battery;
the bidirectional converter converts output power of the photovoltaic controller and the energy storage battery into alternating current power to supply power to the distribution switch; the bidirectional converter converts alternating current power provided by the fast change-over switch into direct current power to charge the energy storage battery;
the output of the generator set provides power for a user load and simultaneously provides power for the contactor and the bypass switch;
the contactor is used for controlling the power input of the quick change-over switch;
the fast switch is used for fast switching power supply between the light storage power supply and the generator set, and changing the running mode of the light storage power supply;
the power distribution switch outputs power for an auxiliary system of the generator set;
the bypass switch is used for replacing the power distribution switch to supply power for the auxiliary system during the shutdown maintenance of the light storage power supply, and the generator set outputs power;
the bypass switch and the distribution switch are controlled by safety interlocking, so that the bypass switch and the distribution switch cannot be switched on at the same time, and the switching operation is performed after the switching operation is performed;
the bidirectional converter controls the charge and discharge running state and power balance of the optical storage power supply through CAN network communication;
the bidirectional converter is matched with the switching operation of the quick change-over switch through communication control of a second CAN network;
the generator set feeds back an operation state signal to the bidirectional converter; the bidirectional converter sends a start/stop control signal to the generator set;
during the heat standby of the generator set, the contactor is disconnected, the quick change-over switch is closed, the distribution switch is closed, and the light storage power supply supplies power to all equipment of the auxiliary unit of the generator set through the distribution switch in an off-grid operation mode; the photovoltaic power generation supplies power to the distribution switch through the bidirectional converter and simultaneously charges the energy storage battery; when the photovoltaic is insufficient, the energy storage battery is converted into a discharge state through the bidirectional converter, and the energy storage battery and the photovoltaic are used for supplying power to the distribution switch together, and the energy storage battery is used for discharging and supplying power without the photovoltaic or at night; when the SOC of the energy storage battery reaches a low limit value, the bidirectional converter signals to control the generator set to start running; if the generator set is already operated, the method is executed according to the following method during the operation of the generator set;
during the operation of the generator set, when the SOC of the energy storage battery reaches a low limit value, the contactor is switched on, the bidirectional converter is switched to a grid-connected mode, the fast switching switch is turned on, the generator set supplies power to the distribution switch and simultaneously charges the energy storage battery, when photovoltaic is available, the photovoltaic and the generator set charge the energy storage battery together, and the photovoltaic utilization is preferential; when the SOC of the energy storage battery reaches a high limit value, the bidirectional converter is switched to an off-grid mode, the quick change-over switch is closed, the contactor is disconnected, the light storage power supply supplies power to the distribution switch, meanwhile, a shutdown control signal is sent to the generator set, if the user load is needed at the moment, the generator set is not stopped, the load continues to operate, and if the user load is not needed, the generator set is directly stopped to recover a hot standby state;
during the operation of the generator set, the starting battery charger, the water jacket heater, the engine oil preheater and the fuel oil electric tracing heat preservation device of the auxiliary system automatically exit from operation, and the generator set belt charger and the waste heat reflux replace and maintain the working condition of the system, so that the load carried by the light storage power supply is greatly reduced, and only the lighting system is required to be supplied.
(1) The auxiliary unit of the island scene generator set is provided with a multi-energy complementary multi-power supply scheme, so that scene requirements of highland, far-field, sea island, various project campsites, energy stations and the like are met;
(2) The light firewood storage is coordinated and complemented, seamless switching of operation modes is realized through a rapid switching system, and the reliability and the electric energy quality of the system are improved;
(3) The photovoltaic green clean energy is preferentially utilized, so that energy conservation and emission reduction are realized;
the patent of the invention is further described below with reference to the drawings and examples.
Drawings
Fig. 1 is a schematic diagram of an auxiliary unit power supply system of an optical storage intelligent generator set according to an embodiment of the present invention.
Description of the embodiments
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, and it should be understood that the preferred embodiments described herein are for illustration and explanation of the present invention, and are not intended to limit the present invention.
As shown in fig. 1, the auxiliary unit power supply system of the light storage intelligent generator set comprises: the photovoltaic power generation system comprises a power generation unit, a photovoltaic panel, a photovoltaic controller, an energy storage battery, a battery management system, a bidirectional converter, a fast change-over switch, a contactor, a power distribution switch and a bypass switch; the auxiliary unit of the generator set comprises a starting battery charger, a water jacket heater, a machine oil preheater, a fuel oil electric tracing heat preservation device and illumination.
The specific connection relation is as follows:
the power output of the generator set is connected to the input end of the contactor, the output end of the contactor is electrically connected with the input end of the quick change-over switch, and the output end of the quick change-over switch is electrically connected with the alternating-current side of the bidirectional converter;
the photovoltaic panel is electrically connected with the input end of the photovoltaic controller, the output end of the photovoltaic controller charges the energy storage battery and is electrically connected with the direct current side of the bidirectional converter, the direct current side of the bidirectional converter charges the energy storage battery, and the energy storage battery discharges through the direct current side of the bidirectional converter;
the battery management system collects the temperature, voltage and current of the energy storage battery and calculates the capacity (SOC) of the energy storage battery;
the output end of the quick change-over switch is connected with the alternating current side of the bidirectional converter and then is electrically connected with the input end of the distribution switch, the output end of the distribution switch provides a total power supply for an auxiliary unit of the generator set and supplies power for the starting battery charger, the water jacket heater, the engine oil preheater, the fuel oil electric tracing heat preservation device and illumination;
the output power of the generator set is connected with the input end of the bypass switch, and the output end of the bypass switch is connected with the output end of the distribution switch; the bypass switch and the distribution switch are controlled by safety interlocking;
the bidirectional converter, the battery management system and the photovoltaic controller are connected through CAN communication to form a first CAN network, and the bidirectional converter is connected with the fast switch through CAN communication to form a second CAN network; the generator set is connected with the bidirectional converter by adopting a control signal;
the photovoltaic panel, the photovoltaic controller, the energy storage battery, the battery management system and the bidirectional converter form a photovoltaic energy storage power supply system, which is called as a photovoltaic energy storage power supply for short.
Some application scenes, such as a field motor power supply vehicle, are limited in the photovoltaic energy storage capacity, and key load ranges closely related to the auxiliary units and the generator set are reasonably matched with the photovoltaic energy storage capacity so as to ensure that the auxiliary units of the generator set work normally.
The photovoltaic controller is used for controlling the electric energy output of the photovoltaic panel to generate electricity and charging the energy storage battery;
the energy storage battery is used for storing the power generation electric energy of the photovoltaic panel and providing direct current power when discharging;
the battery management system collects the voltage, current and temperature of the energy storage battery in real time and calculates the SOC value of the energy storage battery;
the bidirectional converter converts output power of the photovoltaic controller and the energy storage battery into alternating current power to supply power to the distribution switch; the bidirectional converter converts alternating current power provided by the fast change-over switch into direct current power to charge the energy storage battery;
the output of the generator set provides power for a user load and simultaneously provides power for the contactor and the bypass switch;
the contactor is used for controlling the power input of the quick change-over switch;
the fast switch is used for fast switching power supply between the light storage power supply and the generator set, and changing the running mode of the light storage power supply;
the power distribution switch outputs power for an auxiliary system of the generator set;
the bypass switch is used for replacing the power distribution switch to supply power for the auxiliary system during the shutdown maintenance of the light storage power supply, and the generator set outputs power;
the bypass switch and the distribution switch are controlled by safety interlocking, so that the bypass switch and the distribution switch cannot be switched on at the same time, and the switching operation is performed after the switching operation is performed;
the bidirectional converter controls the charge and discharge running state and power balance of the optical storage power supply through CAN network communication;
the bidirectional converter is matched with the switching operation of the quick change-over switch through communication control of a second CAN network;
the generator set feeds back an operation state signal to the bidirectional converter; the bidirectional converter sends a start/stop control signal to the generator set;
during the heat standby of the generator set, the contactor is disconnected, the quick change-over switch is closed, the distribution switch is closed, and the light storage power supply supplies power to all equipment of the auxiliary unit of the generator set through the distribution switch in an off-grid operation mode; the photovoltaic power generation supplies power to the distribution switch through the bidirectional converter and simultaneously charges the energy storage battery; when the photovoltaic is insufficient, the energy storage battery is converted into a discharge state through the bidirectional converter, and the energy storage battery and the photovoltaic are used for supplying power to the distribution switch together, and the energy storage battery is used for discharging and supplying power without the photovoltaic or at night; when the SOC of the energy storage battery reaches a low limit value, the bidirectional converter signals to control the generator set to start running; if the generator set is already operated, the method is executed according to the following method during the operation of the generator set;
during the operation of the generator set, when the SOC of the energy storage battery reaches a low limit value, the contactor is switched on, the bidirectional converter is switched to a grid-connected mode, the fast switching switch is turned on, the generator set supplies power to the distribution switch and simultaneously charges the energy storage battery, when photovoltaic is available, the photovoltaic and the generator set charge the energy storage battery together, and the photovoltaic utilization is preferential; when the SOC of the energy storage battery reaches a high limit value, the bidirectional converter is switched to an off-grid mode, the quick change-over switch is closed, the contactor is disconnected, the light storage power supply supplies power to the distribution switch, meanwhile, a shutdown control signal is sent to the generator set, if the user load is needed at the moment, the generator set is not stopped, the load continues to operate, and if the user load is not needed, the generator set is directly stopped to recover a hot standby state;
during the operation of the generator set, the starting battery charger, the water jacket heater, the engine oil preheater and the fuel oil electric tracing heat preservation device of the auxiliary system automatically exit from operation, and the generator set belt charger and the waste heat reflux replace and maintain the working condition of the system, so that the load carried by the light storage power supply is greatly reduced, and only the lighting system is required to be supplied.
The above disclosure is only illustrative of the present invention and is not intended to limit the present invention. Modifications of the embodiments described herein or equivalent alternatives to some of the features thereof may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The auxiliary unit power supply system of the light storage intelligent generator set is characterized in that: the power output of the generator set is connected to the input end of the contactor, the output end of the contactor is electrically connected with the input end of the quick change-over switch, and the output end of the quick change-over switch is electrically connected with the alternating-current side of the bidirectional converter;
the photovoltaic panel is electrically connected with the input end of the photovoltaic controller, the output end of the photovoltaic controller charges the energy storage battery and is electrically connected with the direct current side of the bidirectional converter, the direct current side of the bidirectional converter charges the energy storage battery, and the energy storage battery discharges through the direct current side of the bidirectional converter;
the battery management system collects the temperature, voltage and current of the energy storage battery and calculates the capacity SOC of the energy storage battery;
the output end of the quick change-over switch is connected with the alternating current side of the bidirectional converter and then is electrically connected with the input end of the distribution switch, the output end of the distribution switch provides a total power supply for an auxiliary unit of the generator set and supplies power for the starting battery charger, the water jacket heater, the engine oil preheater, the fuel oil electric tracing heat preservation device and illumination;
the output power of the generator set is connected with the input end of the bypass switch, and the output end of the bypass switch is connected with the output end of the distribution switch; the bypass switch and the distribution switch are controlled by safety interlocking;
the bidirectional converter, the battery management system and the photovoltaic controller are connected through CAN communication to form a first CAN network, and the bidirectional converter is connected with the fast switch through CAN communication to form a second CAN network; the generator set is connected with the bidirectional converter by adopting a control signal;
the photovoltaic panel, the photovoltaic controller, the energy storage battery, the battery management system and the bidirectional converter form a photovoltaic energy storage power supply system, which is called as a photovoltaic energy storage power supply for short.
2. The light-storing intelligent power generating set auxiliary unit power supply system according to claim 1, wherein: the photovoltaic controller is used for controlling the electric energy output of the photovoltaic panel to generate electricity and charging the energy storage battery;
the energy storage battery is used for storing the power generation electric energy of the photovoltaic panel and providing direct current power when discharging.
3. The light-storing intelligent power generating set auxiliary unit power supply system according to claim 1, wherein: and the battery management system acquires the voltage, the current and the temperature of the energy storage battery in real time and calculates the SOC value of the energy storage battery.
4. The light-storing intelligent power generating set auxiliary unit power supply system according to claim 1, wherein: the bidirectional converter converts output power of the photovoltaic controller and the energy storage battery into alternating current power to supply power to the distribution switch; the bidirectional converter converts alternating current power provided by the fast change-over switch into direct current power to charge the energy storage battery.
5. The light-storing intelligent power generating set auxiliary unit power supply system according to claim 1, wherein: the output of the generator set provides power for a user load and simultaneously provides power for the contactor and the bypass switch;
the contactor is used for controlling the power input of the quick change-over switch;
the fast switch is used for fast switching power supply between the light storage power supply and the generator set, and changing the running mode of the light storage power supply.
6. The light-storing intelligent power generating set auxiliary unit power supply system according to claim 1, wherein: the power distribution switch outputs power for an auxiliary system of the generator set;
the bypass switch is used for replacing the power distribution switch to supply power for the auxiliary system during the shutdown maintenance of the light storage power supply, and the generator set outputs power;
and safety interlocking control is arranged between the bypass switch and the distribution switch.
7. The light-storing intelligent power generating set auxiliary unit power supply system according to claim 1, wherein: the bidirectional converter controls the charge and discharge running state and power balance of the optical storage power supply through CAN network communication;
the bidirectional converter is matched with the switching operation of the quick change-over switch through communication control of a second CAN network;
the generator set feeds back an operation state signal to the bidirectional converter; the bi-directional converter sends a start/stop control signal to the generator set.
8. The light-storing intelligent power generating set auxiliary unit power supply system according to claim 1, wherein: during the heat standby of the generator set, the contactor is disconnected, the quick change-over switch is closed, the distribution switch is closed, and the light storage power supply supplies power to all equipment of the auxiliary unit of the generator set through the distribution switch in an off-grid operation mode; the photovoltaic power generation supplies power to the distribution switch through the bidirectional converter and simultaneously charges the energy storage battery; when the photovoltaic is insufficient, the energy storage battery is converted into a discharge state through the bidirectional converter, and the energy storage battery and the photovoltaic are used for supplying power to the distribution switch together, and the energy storage battery is used for discharging and supplying power without the photovoltaic or at night; when the SOC of the energy storage battery reaches a low limit value, the bidirectional converter signals to control the generator set to start running; if the generator set is already operating, it is executed according to the method described below during operation of the generator set.
9. The light-storing intelligent power generating set auxiliary unit power supply system according to claim 1, wherein: during the operation of the generator set, when the SOC of the energy storage battery reaches a low limit value, the contactor is switched on, the bidirectional converter is switched to a grid-connected mode, the fast switching switch is turned on, the generator set supplies power to the distribution switch and simultaneously charges the energy storage battery, when photovoltaic is available, the photovoltaic and the generator set charge the energy storage battery together, and the photovoltaic utilization is preferential; when the SOC of the energy storage battery reaches a high limit value, the bidirectional converter is switched to an off-grid mode, the quick change-over switch is closed, the contactor is disconnected, the light storage power supply supplies power to the distribution switch, meanwhile, a control signal capable of stopping is sent to the generator set, if the user load is needed at the moment, the generator set is not stopped, the load continues to operate, and if the user load is not needed, the generator set is stopped directly to recover a hot standby state.
10. The light-storing intelligent power generating set auxiliary unit power supply system according to claim 1, wherein: during the operation of the generator set, the starting battery charger, the water jacket heater, the engine oil preheater and the fuel oil electric tracing heat preservation device of the auxiliary system automatically exit from operation, and the generator set belt charger and the waste heat reflux replace and maintain the working condition of the system, so that the load carried by the light storage power supply is greatly reduced, and only the lighting system is required to be supplied.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311231938.XA CN117013608A (en) | 2023-09-22 | 2023-09-22 | Auxiliary unit power supply system of light storage intelligent generator set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311231938.XA CN117013608A (en) | 2023-09-22 | 2023-09-22 | Auxiliary unit power supply system of light storage intelligent generator set |
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| Publication Number | Publication Date |
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| CN117013608A true CN117013608A (en) | 2023-11-07 |
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|---|---|---|---|
| CN202311231938.XA Pending CN117013608A (en) | 2023-09-22 | 2023-09-22 | Auxiliary unit power supply system of light storage intelligent generator set |
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| Country | Link |
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| CN (1) | CN117013608A (en) |
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