CN215907951U - Energy storage type diesel generator set control system - Google Patents
Energy storage type diesel generator set control system Download PDFInfo
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- CN215907951U CN215907951U CN202121794772.9U CN202121794772U CN215907951U CN 215907951 U CN215907951 U CN 215907951U CN 202121794772 U CN202121794772 U CN 202121794772U CN 215907951 U CN215907951 U CN 215907951U
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- energy storage
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- storage battery
- generator set
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
Abstract
The utility model relates to the technical field of diesel generating sets, in particular to an energy storage type diesel generating set control system which comprises a diesel generating set, an energy storage battery, an inverter, a DC-DC bidirectional converter and an energy management system, wherein the inverter comprises an AC-DC conversion module, a DC-AC inversion module and a direct current bus connected between the AC-DC conversion module and the DC-AC inversion module, the diesel generating set is connected with the AC-DC conversion module, the energy storage battery is connected with the DC-DC bidirectional converter, the DC-DC bidirectional converter is connected with the DC-AC inversion module through the direct current bus, the diesel generating set, the AC-DC conversion module, the DC-AC inversion module and the DC-DC bidirectional converter are respectively connected with the energy management system, the energy management system is connected with the energy storage battery. The utility model realizes the energy-saving operation of the diesel generator set, reduces the fuel waste, and improves the emergency use capability of the diesel generator set and the adaptability of the diesel generator set in occasions with higher noise requirements.
Description
Technical Field
The utility model relates to the technical field of diesel generating sets, in particular to a control system of an energy storage type diesel generating set.
Background
The diesel generating set is a power generating device using diesel as main fuel. The existing diesel generator set has the following problems when in use:
(1) the use power of the existing diesel generator set does not exceed 60 percent of rated power usually in normal work, and a certain fuel consumption can be caused when the diesel generator set is in a no-load running state in many times, so that the use cost of the diesel generator set is overhigh.
(2) The existing diesel generator set has high noise during working, and is limited to be used in places with strict requirements on environmental noise.
(3) The conventional diesel generator set needs a certain time from starting to on-load output, usually about 2-5 min, has limited one-time on-load capacity, usually does not exceed 75% of rated output power, and cannot meet the situation that the power output time of the diesel generator set used as an emergency power supply has strict requirements.
(3) The power supply for the equipment can not be realized at the stable starting and running stage of the diesel generating set.
(4) The idle standby state operation of the diesel generating set not only causes fuel waste, but also reduces the service life of the diesel generating set.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides an energy storage type diesel generating set control system, which aims to realize the energy-saving operation of a diesel generating set, reduce the fuel waste, and improve the emergency use capability of the diesel generating set and the adaptability of occasions with higher noise requirements. The specific technical scheme is as follows:
the energy storage type diesel generating set control system comprises a diesel generating set, an energy storage battery, an inverter, a DC-DC bidirectional converter and an energy management system, wherein the inverter comprises an AC-DC conversion module, a DC-AC inversion module and a direct current bus connected between the AC-DC conversion module and the DC-AC inversion module, the diesel generating set is connected with the AC-DC conversion module, the energy storage battery is connected with the DC-DC bidirectional converter, the DC-DC bidirectional converter is connected with the DC-AC inversion module through the direct current bus, the diesel generating set, the AC-DC conversion module, the DC-AC inversion module and the DC-DC bidirectional converter are respectively connected with the energy management system, and the energy management system is connected with the energy storage battery.
Preferably, the energy management system is connected to the energy storage battery through a BMS battery management system.
In the utility model, the diesel generator set is connected with the AC-DC conversion module through a first control switch K1, the energy storage battery is connected with the DC-DC bidirectional converter through a second control switch K2, and the DC-AC inversion module is connected with an alternating current load through a third control switch K3.
In the utility model, the diesel generator set is connected with an alternating current load through a bypass switch K4.
Preferably, the voltage of the dc bus is 600V, and the ac load is 380V ac load.
In the utility model, the diesel generator set comprises a diesel engine and a generator connected with the diesel engine, wherein the generator is one of a synchronous generator, an asynchronous generator and a permanent magnet synchronous generator.
In the present invention, the energy management system is connected to an I/O controller.
In the utility model, the DC-DC bidirectional converter is provided with two operation modes, wherein the two operation modes are a constant power control operation mode and a direct current side bus voltage control operation mode.
As a preferable scheme of the utility model, a solar power supply and/or a wind power supply are arranged outside the diesel generator set, and the solar power supply and/or the wind power supply are connected with the energy storage battery through a DC-DC direct current converter.
In the utility model, the energy management system is connected with a power grid.
The structure and working principle of the utility model are further explained as follows:
(1) the utility model is composed of a diesel generating set (comprising a diesel engine and a generator), a DC-DC converter, an inverter, an energy storage battery, an energy management system, an I/O controller, a man-machine display system and other main core devices.
(2) In the main circuit of the system, the alternating current input voltage of the diesel generator set or the power grid is converted into alternating current output through the inverters AC-DC and DC-AC, and the conversion can ensure that the voltage and the frequency of the generator or the power grid do not influence the stability of the alternating current output, so that the electrical performance index is ensured.
(3) The energy management system fully utilizes the residual power of the diesel generating set, the load is monitored in real time through the energy management system so as to utilize the residual power of the diesel generating set, and the residual power can be converted into electric energy to charge the energy storage battery by utilizing the DC-DC bidirectional converter connected to the direct current bus. The DC-DC bidirectional converter can also convert the energy of the energy storage battery into direct-current voltage through the direct-current bus and transmit the direct-current voltage to the direct-current bus of the inverter, so that the output alternating-current power is increased, and the energy utilization maximization is realized.
(4) Under the condition that emergency power supply is needed, the energy storage battery directly supplies power to a direct current bus of the inverter through the DC-DC bidirectional converter, and the inverter converts direct current into alternating current through the DC-AC inversion module and outputs the alternating current to supply power to a load; and meanwhile, the diesel generator set is automatically started to charge the battery according to the capacity of the battery.
(5) The diesel generator set can be started in a staggered mode in an environment with high noise requirements, for example, in a residential area, the diesel generator set can be operated at a rated rotating speed in the daytime and can be operated at 50% of rated power at night, the power of the diesel generator set is only about 50% of the rated power, and the energy storage battery provides the other 50% of the power.
(6) In the occasions with high sudden loading and unloading frequency, the sudden loading capacity of the diesel generator set is limited and is usually not more than 70%; and the diesel generator set is usually used for starting heavy current loads such as an air compressor and the like in construction sites and mines, the motor loads such as the air compressor, a compressor and the like are usually frequently started, the starting current is 6-7 times of the rated current, and the power is only about one fifth of that during starting stable operation. At the moment, the load is supplied with power through the energy storage battery, and the diesel generator set is started to charge the battery only according to the capacity of the battery and does not directly supply power to the load, so that the capacity of the diesel generator set with a large-current load is greatly enhanced.
(7) In an island-mounted diesel generator mode, a solar energy and wind energy power source can be stored in a battery through a DC-DC direct current converter, and a multi-mode power supply application can be provided together with a diesel generator set.
(8) Different generators such as a synchronous generator, an asynchronous generator, a permanent magnet synchronous generator and the like can be used through the inverter and the DC-DC bidirectional converter, so that the application in different occasions is met.
(9) The DC-DC bidirectional converter has two operation modes of a constant power control mode and a direct-current side bus voltage control mode, has bidirectional charge and discharge control capability, and has full-power dynamic response time of less than 500 ms; the external equipment can read the data information of the DC/DC unit through the 485 communication interface, and can set the control voltage of the direct current bus.
(10) And (3) sudden loading process: the sudden load is responded by the quick response of the energy storage battery, and the power required by the load increase is supplemented by the energy storage battery; and after the system is stable, slowly reducing the output power of the energy storage battery, and synchronously increasing the output power of the diesel generating set until the energy storage output power is zero.
(11) And (3) sudden load reduction process: the sudden load reduction is responded through the quick response of the energy storage battery, and the redundant electric energy of the diesel generator set is absorbed to charge the energy storage battery; and after the system is stable, slowly reducing the absorption power of the energy storage battery, and synchronously and slowly reducing the output power of the diesel generator set until the absorption power of the energy storage battery is reduced to zero.
(12) And (3) charging process: and under the conditions that the output power of the diesel generator is small and the system is stable, the energy storage battery is charged with constant power, and the diesel generator supplies power for the load and simultaneously charges the energy storage battery.
The utility model has the beneficial effects that: the energy storage battery and the corresponding control circuit are arranged in the system, so that the energy-saving operation of the diesel generating set is realized, the fuel waste is reduced, the one-time loading capacity of the set is strong, the working efficiency is high, and the environmental adaptability is good, so that the emergency use capacity of the diesel generating set and the adaptability of the diesel generating set on occasions with higher noise requirements are enhanced.
Drawings
Fig. 1 is a schematic structural diagram of a control system of an energy storage type diesel generating set.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Fig. 1 shows an embodiment of a control system of an energy storage type diesel generating set according to the utility model, which comprises a diesel generating set, an energy storage battery, an inverter, a DC-DC bidirectional converter and an energy management system, the inverter includes an AC-DC conversion module, a DC-AC inversion module, and a DC bus connected between the AC-DC conversion module and the DC-AC inversion module, the diesel generator set is connected with an AC-DC conversion module, the energy storage battery is connected with the DC-DC bidirectional converter, the DC-DC bidirectional converter is connected with the DC-AC inversion module through the direct current bus, the diesel generator set, the AC-DC conversion module, the DC-AC inversion module and the DC-DC bidirectional converter are respectively connected with an energy management system, and the energy management system is connected with the energy storage battery.
Preferably, the energy management system is connected to the energy storage battery through a BMS battery management system.
In this embodiment, the diesel generator set is connected to the AC-DC conversion module through a first control switch K1, the energy storage battery is connected to the DC-DC bidirectional converter through a second control switch K2, and the DC-AC inversion module is connected to an AC load through a third control switch K3.
In this embodiment, the diesel generator set is connected to an ac load through a bypass switch K4.
Preferably, the voltage of the dc bus is 600V, and the ac load is 380V ac load.
In this embodiment, the diesel generator set includes a diesel engine and a generator connected to the diesel engine, and the generator is one of a synchronous generator, an asynchronous generator, and a permanent magnet synchronous generator.
In this embodiment, the energy management system is connected to an I/O controller.
In this embodiment, the DC-DC bidirectional converter is provided with two operation modes, which are a constant power control operation mode and a DC-side bus voltage control operation mode.
As a preferable scheme of this embodiment, a solar power supply and/or a wind power supply is provided outside the diesel generator set, and the solar power supply and/or the wind power supply are connected to the energy storage battery through a DC-DC direct current converter.
In this embodiment, the energy management system is connected to a power grid.
The structure and operation principle of the present embodiment are further explained as follows:
(1) the system is composed of a diesel generating set (comprising a diesel engine and a generator), a DC-DC direct current converter, an inverter, an energy storage battery, an energy management system, an I/O controller, a man-machine display system and other main core devices.
(2) In a main circuit (shown in figure 1) of the system, alternating current input voltage of a diesel generator set or a power grid is converted into alternating current output through an inverter AC-DC and a DC-AC, and the conversion can ensure that the voltage and the frequency of the generator or the power grid do not influence the stability of the alternating current output, so that the electrical performance index is ensured.
(3) The energy management system fully utilizes the residual power of the diesel generating set, the load is monitored in real time through the energy management system so as to utilize the residual power of the diesel generating set, and the residual power can be converted into electric energy to charge the energy storage battery by utilizing the DC-DC bidirectional converter connected to the direct current bus. The DC-DC bidirectional converter can also convert the energy of the energy storage battery into direct-current voltage through the direct-current bus and transmit the direct-current voltage to the direct-current bus of the inverter, so that the output alternating-current power is increased, and the energy utilization maximization is realized.
(4) Under the condition that emergency power supply is needed, the energy storage battery directly supplies power to a direct current bus of the inverter through the DC-DC bidirectional converter, and the inverter converts direct current into alternating current through the DC-AC inversion module and outputs the alternating current to supply power to a load; and meanwhile, the diesel generator set is automatically started to charge the battery according to the capacity of the battery.
(5) The diesel generator set can be started in a staggered mode in an environment with high noise requirements, for example, in a residential area, the diesel generator set can be operated at a rated rotating speed in the daytime and can be operated at 50% of rated power at night, the power of the diesel generator set is only about 50% of the rated power, and the energy storage battery provides the other 50% of the power.
(6) In the occasions with high sudden loading and unloading frequency, the sudden loading capacity of the diesel generator set is limited and is usually not more than 70%; and the diesel generator set is usually used for starting heavy current loads such as an air compressor and the like in construction sites and mines, the motor loads such as the air compressor, a compressor and the like are usually frequently started, the starting current is 6-7 times of the rated current, and the power is only about one fifth of that during starting stable operation. At the moment, the load is supplied with power through the energy storage battery, and the diesel generator set is started to charge the battery only according to the capacity of the battery and does not directly supply power to the load, so that the capacity of the diesel generator set with a large-current load is greatly enhanced.
(7) In an island-mounted diesel generator mode, a solar energy and wind energy power source can be stored in a battery through a DC-DC direct current converter, and a multi-mode power supply application can be provided together with a diesel generator set.
(8) Different generators such as a synchronous generator, an asynchronous generator, a permanent magnet synchronous generator and the like can be used through the inverter and the DC-DC bidirectional converter, so that the application in different occasions is met.
(9) The DC-DC bidirectional converter has two operation modes of a constant power control mode and a direct-current side bus voltage control mode, has bidirectional charge and discharge control capability, and has full-power dynamic response time of less than 500 ms; the external equipment can read the data information of the DC/DC unit through the 485 communication interface, and can set the control voltage of the direct current bus.
(10) And (3) sudden loading process: the sudden load is responded by the quick response of the energy storage battery, and the power required by the load increase is supplemented by the energy storage battery; and after the system is stable, slowly reducing the output power of the energy storage battery, and synchronously increasing the output power of the diesel generating set until the energy storage output power is zero.
(11) And (3) sudden load reduction process: the sudden load reduction is responded through the quick response of the energy storage battery, and the redundant electric energy of the diesel generator set is absorbed to charge the energy storage battery; and after the system is stable, slowly reducing the absorption power of the energy storage battery, and synchronously and slowly reducing the output power of the diesel generator set until the absorption power of the energy storage battery is reduced to zero.
(12) And (3) charging process: and under the conditions that the output power of the diesel generator is small and the system is stable, the energy storage battery is charged with constant power, and the diesel generator supplies power for the load and simultaneously charges the energy storage battery.
The beneficial effect of this embodiment is: the energy storage battery and the corresponding control circuit are arranged in the system, so that the energy-saving operation of the diesel generating set is realized, the fuel waste is reduced, the one-time loading capacity of the set is strong, the working efficiency is high, and the environmental adaptability is good, so that the emergency use capacity of the diesel generating set and the adaptability of the diesel generating set on occasions with higher noise requirements are enhanced.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A control system of an energy storage type diesel generating set is characterized by comprising a diesel generating set, an energy storage battery, an inverter, a DC-DC bidirectional converter and an energy management system, the inverter includes an AC-DC conversion module, a DC-AC inversion module, and a DC bus connected between the AC-DC conversion module and the DC-AC inversion module, the diesel generator set is connected with an AC-DC conversion module, the energy storage battery is connected with the DC-DC bidirectional converter, the DC-DC bidirectional converter is connected with the DC-AC inversion module through the direct current bus, the diesel generator set, the AC-DC conversion module, the DC-AC inversion module and the DC-DC bidirectional converter are respectively connected with an energy management system, and the energy management system is connected with the energy storage battery.
2. The system of claim 1, wherein the energy management system is connected to the energy storage battery through a BMS battery management system.
3. The energy storage type diesel generator set control system as claimed in claim 1, wherein the diesel generator set is connected to the AC-DC conversion module through a first control switch K1, the energy storage battery is connected to the DC-DC bidirectional converter through a second control switch K2, and the DC-AC inversion module is connected to an AC load through a third control switch K3.
4. The control system of claim 1, wherein the diesel generator set is connected to an alternating current load through a bypass switch K4.
5. The control system of claim 3 or 4, wherein the voltage of the DC bus is 600V, and the AC load is 380V AC load.
6. The energy storage type diesel generator set control system as claimed in claim 1, wherein the diesel generator set comprises a diesel engine and a generator connected with the diesel engine, and the generator is one of a synchronous generator, an asynchronous generator and a permanent magnet synchronous generator.
7. The control system of claim 1, wherein the energy management system is coupled to the I/O controller.
8. The control system of claim 1, wherein the DC-DC bidirectional converter is provided with two operating modes, the two operating modes being a constant power control operating mode and a DC side bus voltage control operating mode.
9. The control system of the energy storage type diesel generating set according to claim 1, wherein a solar power source and/or a wind power source is arranged outside the diesel generating set, and the solar power source and/or the wind power source are connected with the energy storage battery through a DC-DC direct current converter.
10. The control system of claim 1, wherein the energy management system is connected to a power grid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121794772.9U CN215907951U (en) | 2021-08-03 | 2021-08-03 | Energy storage type diesel generator set control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121794772.9U CN215907951U (en) | 2021-08-03 | 2021-08-03 | Energy storage type diesel generator set control system |
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| CN215907951U true CN215907951U (en) | 2022-02-25 |
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| CN202121794772.9U Active CN215907951U (en) | 2021-08-03 | 2021-08-03 | Energy storage type diesel generator set control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117060469A (en) * | 2023-08-03 | 2023-11-14 | 北京博威能源科技股份有限公司 | Diesel oil and energy storage combined complementary generator set |
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2021
- 2021-08-03 CN CN202121794772.9U patent/CN215907951U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117060469A (en) * | 2023-08-03 | 2023-11-14 | 北京博威能源科技股份有限公司 | Diesel oil and energy storage combined complementary generator set |
| CN117060469B (en) * | 2023-08-03 | 2024-02-20 | 天津博威动力设备有限公司 | Diesel oil and energy storage combined complementary generator set |
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