CN217406194U - Diesel generator factory test energy storage and utilization device - Google Patents
Diesel generator factory test energy storage and utilization device Download PDFInfo
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- CN217406194U CN217406194U CN202220134153.5U CN202220134153U CN217406194U CN 217406194 U CN217406194 U CN 217406194U CN 202220134153 U CN202220134153 U CN 202220134153U CN 217406194 U CN217406194 U CN 217406194U
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- 238000004146 energy storage Methods 0.000 title claims abstract description 129
- 238000012360 testing method Methods 0.000 title claims abstract description 48
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 claims abstract description 43
- 238000012544 monitoring process Methods 0.000 claims description 12
- 230000000151 anti-reflux effect Effects 0.000 claims description 7
- 230000001052 transient effect Effects 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 5
- 238000013461 design Methods 0.000 claims description 4
- 230000001939 inductive effect Effects 0.000 claims description 4
- 238000007599 discharging Methods 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 3
- 238000004064 recycling Methods 0.000 abstract 1
- 238000007726 management method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
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Abstract
A diesel generator factory test energy storage and utilization device comprises a diesel generator set, a test station load, an energy storage utilization system and an energy management system EMS; the energy storage utilization system comprises a plurality of groups of independently arranged energy storage utilization subsystems, and the single group of energy storage utilization subsystems comprise an energy storage converter system, a lithium iron phosphate battery energy storage system and a step-down transformer; the energy storage converter system comprises a first energy storage converter system and a second energy storage converter system; lithium iron phosphate battery energy storage system is including lithium iron phosphate battery and BMS system, BMS system and lithium iron phosphate battery electric connection. The energy storage converter system is used for recycling energy output by a diesel generating set through charging and discharging the energy storage system of the lithium iron phosphate battery, so that electric energy waste is avoided.
Description
Technical Field
The patent of the utility model relates to a diesel generating set technical field specifically is a diesel generator dispatches from factory and tests energy storage and utilize device.
Background
Because the average monthly power consumption of a factory and a park is about 50 ten thousand degrees, the monthly power consumption of the factory is about 15 ten thousand degrees, and the monthly power consumption of the park is about 35 ten thousand degrees, a diesel generator set of the factory needs to be subjected to a full power test when being subjected to factory test, the test time is about 1 hour, and some data center projects need to be fully loaded and continuously operated for 12 hours and subjected to transient test. The capacity range of the diesel generating set is 7kW-2400kW, and the currently mainly debugged diesel generating set is about 1800 kW. The diesel generator set runs at full power during debugging, energy is consumed through discharge devices such as a resistive alternating current load cabinet and an inductive alternating current load cabinet in a laboratory, the debugging consumed electric quantity of the diesel generator set is about 6-8 ten thousand degrees of electric quantity every month, the output power of the diesel generator set is wasted, and the economical efficiency is poor.
SUMMERY OF THE UTILITY MODEL
The utility model provides a diesel generator dispatches from factory and tests energy storage and utilize device to solve the problem that proposes in the above-mentioned background art, concrete technical scheme is as follows:
a diesel generator factory test energy storage and utilization device comprises a diesel generator set, a test station load, an energy storage utilization system and an energy management system EMS;
the diesel generator set comprises a low-voltage unit and a high-voltage unit, wherein the low-voltage diesel generator set is used for providing a low-voltage alternating current power supply when a factory test belt runs fully and continuously, and the high-voltage diesel generator set is stepped down into the low-voltage alternating current power supply through a transformer;
the test station loads comprise resistive and inductive alternating current loads and are mainly used for factory transient index testing of the diesel generating set;
the energy storage utilization system comprises a plurality of groups of independently arranged energy storage utilization subsystems, and the single group of energy storage utilization subsystems comprise an energy storage converter system, a lithium iron phosphate battery energy storage system and a step-down transformer; the energy storage converter system comprises a first energy storage converter system and a second energy storage converter system; the lithium iron phosphate battery energy storage system comprises a lithium iron phosphate battery and a BMS system, and the BMS system is electrically connected with the lithium iron phosphate battery;
the diesel generator set is connected to a test station load through a breaker, and is simultaneously connected with a first energy storage converter system through a low-voltage alternating current bus and the breaker, the first energy storage converter system is connected to a lithium iron phosphate battery energy storage system, the lithium iron phosphate battery energy storage system is connected to a second energy storage converter system, and then the lithium iron phosphate battery energy storage system is connected to an electric load through a step-down transformer; and the energy management system EMS is connected with a controller of the diesel generator set, the BMS system and the energy storage converter system.
Furthermore, the first energy storage converter system and the second energy storage converter system are formed by connecting at least two energy storage converter modules in parallel.
Further, the first energy storage converter system is a 500kW energy storage converter system, and the second energy storage converter system is a 250kW energy storage converter system; the energy storage converter system adopts the modularized design, and every energy storage converter module is 62.5kW, and 8 modules connect in parallel and constitute 500kW energy storage converter system, and 4 modules connect in parallel and constitute 250kW energy storage converter system.
Furthermore, among the lithium iron phosphate battery energy storage system, the battery adopts lithium iron phosphate battery, and a set of 2P6S lithium iron phosphate battery constitutes single 100Ah module, and two sets of modules constitute single 200Ah battery box, and 19 battery boxes and a high-voltage box constitute single cluster battery cluster, and single cluster capacity is 145.9kWh, and four clusters connect in parallel and constitute the lithium iron phosphate battery energy storage system that capacity is 583.6 kWh.
Further, the energy management system EMS comprises an acquisition layer and a cloud monitoring layer; the collection layer device is a microgrid controller, a microgrid energy cloud system is deployed at the cloud monitoring layer, and the microgrid controller is in microgrid energy cloud communication with the microgrid monitoring layer through a 4G module.
Furthermore, the system also comprises an anti-reflux device, and the electric load is connected with the commercial power through the anti-reflux device.
The beneficial effects of the utility model reside in that:
the energy storage converter system recycles energy output by a diesel generating set test through charging and discharging an iron phosphate lithium battery energy storage system, and feeds electric energy back to a power utilization load efficiently without pollution, so that the problem of electric energy waste caused by direct consumption of the electric energy through a test station load is avoided; simultaneously, the load conditions of the factory building and the industrial park are dynamically detected by the park power utilization monitoring system, and are matched with the capacity of the diesel generator set, the electricity generated by the firewood is dynamically distributed to the factory building and the industrial park, the purpose that the firewood is sent out for testing and generating power and is converted into the park for self use is realized, the recovery maximization is realized, and the purposes of reutilization and energy saving and efficiency improvement of the firewood sending out for testing and generating power are achieved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a working principle block diagram of the present invention;
FIG. 2 is a main topological diagram of a 500kW energy storage converter circuit of the utility model;
FIG. 3 is a main topology diagram of a 250kW energy storage converter circuit of the utility model;
fig. 4 is an architecture diagram of an energy management system EMS network of the present invention;
in the figure: 1. the system comprises a diesel generating set, 2, a test station load, 3, an energy storage utilization system, 4, 500kW energy storage converter systems, 5, an energy storage utilization subsystem, 6, a lithium iron phosphate battery energy storage system, 7, 250kW energy storage converter systems, 8, a step-down transformer, 9, an electricity utilization load, 10-backflow prevention devices, 11, a mains supply, 12, an RS485 communication line, 12 and a circuit breaker.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and the present invention is not limited to the specific embodiments disclosed below.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The use of "first," "second," and similar terms in the description and in the claims of the present application does not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships are changed accordingly.
Example 1
A diesel generator factory test energy storage and utilization device comprises a diesel generator set 1, a test station load 2, an energy storage utilization system 3, an energy management system EMS and an anti-reflux device 10.
The diesel generator set 1 comprises a low-voltage unit and a high-voltage unit, wherein the low-voltage diesel generator set is used for providing a low-voltage alternating-current power supply when a factory test strip runs fully and continuously, and the high-voltage diesel generator set is reduced to the low-voltage alternating-current power supply through a transformer.
The test station load 2 comprises resistive and inductive alternating current loads and is mainly used for factory transient index testing of the diesel generating set 1.
The energy storage utilization system 3 comprises a plurality of groups of energy storage utilization subsystems 5 which are independently arranged, and the single group of energy storage utilization subsystems 5 comprise an energy storage converter system, a lithium iron phosphate battery energy storage system 6 and a step-down transformer 8; the energy storage converter system comprises a 500kW energy storage converter system 4 and a 250kW energy storage converter system 7; lithium iron phosphate battery energy storage system 6 is including lithium iron phosphate battery and BMS system, BMS system and lithium iron phosphate battery electric connection.
Preferably, the energy storage utilization system 3 can set each group of energy storage utilization subsystems 5 to be independently connected with the electric load 9 according to actual needs, or a plurality of groups of energy storage utilization subsystems 5 jointly supply power to a single electric load 9.
In the above, the diesel generator set 1 is connected to a test station load 2 through a breaker 13, and is connected to a 500kW energy storage converter system 4 through a low-voltage ac bus and the breaker 13, the 500kW energy storage converter system 4 is connected to a lithium iron phosphate battery energy storage system 6, the lithium iron phosphate battery energy storage system 6 is connected to a 250kW energy storage converter system 7, and then is connected to an electric load 9 through a step-down transformer 8; the energy management system EMS is connected with a controller, a BMS system and an energy storage converter system of the diesel generator set 1 through an RS485 communication line 12, and a mains supply 11 is connected to an electric load 9 through a reverse flow prevention device 10.
Example 2
As shown in fig. 1-4, this example further illustrates example 1:
the energy storage converter system adopts the modularized design, each energy storage converter module is 62.5kW, 8 modules are connected in parallel to form a 500kW energy storage converter system 4, and 4 modules are connected in parallel to form a 250kW energy storage converter system 7. The energy storage converter has a bidirectional inversion function, can support a power grid, ensures stable operation of a power grid system, provides short-time impact resistance, supplies power smoothly, stores energy, cuts peaks and fills valleys; the modularized design can further improve the switching frequency, the conversion efficiency and the system stability, reduce the output harmonic waves and the switching loss, and simultaneously can reduce the size of the converter.
In the lithium iron phosphate battery energy storage system 6, the batteries are lithium iron phosphate batteries, a set of 2P6S lithium iron phosphate batteries form a single 100Ah module, two sets of modules form a single 200Ah battery box, 19 battery boxes and a high-voltage box form a single cluster battery cluster, the capacity of the single cluster is 145.9kWh, and four clusters are connected in parallel to form the lithium iron phosphate battery energy storage system 6 with the capacity of 583.6 kWh; meanwhile, the lithium battery has the advantages of environmental protection, no pollution, high specific energy, long cycle life and long storage period, and the lithium iron phosphate battery energy storage system 6 is used for storing electric energy generated by a diesel engine in a factory test and supplying the electric energy to an electric load 9, so that the purpose of saving electric charge is achieved.
The energy management system EMS mainly provides equipment and services of an acquisition layer and a cloud monitoring layer; the collection layer device is a microgrid controller, and a microgrid energy cloud system is deployed at the cloud monitoring layer part. The microgrid controller is in microgrid energy cloud communication with the cloud monitoring layer through a 4G module (or Ethernet); the micro-grid energy cloud is used for realizing remote monitoring on the equipment through a cloud platform, providing an interface for user operation and background data interaction, friendly displaying the running data of the micro-grid, and serving as an intelligent control center, and the micro-grid energy cloud can be managed and accessed through a Web page; meanwhile, the microgrid controller is connected with the system data of the energy storage converter and the 6 data of the lithium iron phosphate battery energy storage system and used as the input of stable operation of the microgrid, and the system output active power regulation and the system stability are realized by controlling the energy storage converter to regulate the power output.
The anti-reflux device 10 is used for supplying power to the power load 9 by the commercial power 11 and the storage battery at the same time, and has an anti-reflux function on the power grid side, so that the power of the storage battery cannot flow back into the power grid, and the storage battery supplies power preferentially and then supplies power to the power grid.
The diesel generating set 1 is subjected to delivery test, if transient test is required, 50% sudden load loading and 100% sudden load unloading performance test is required to be realized through a test station load 2, if full-load continuous operation test is carried out, low-voltage 400V alternating current emitted by the diesel generating set 1 or low-voltage 400V alternating current output by a high-voltage unit through voltage reduction of a transformer rectifies the alternating current into direct current through a 500kW energy storage converter system 4, and charging of a lithium iron phosphate battery energy storage system 6 is realized; under the normal condition, the power load supplies power through commercial power, when the storage battery is fully charged or the electric quantity of the storage battery is enough to support the power load, the direct current can be inverted into alternating current through the 250kW energy storage converter system 7, the power load 9 is directly supplied with power through the step-down transformer 8, and under the condition that the electric quantity of the storage battery is not enough to maintain the load requirement, the commercial power 11 is connected to the power load 9 for supplying power; in the process of power supply conversion, uninterrupted power supply needs to be realized, the storage battery and the mains supply are connected to the power grid and run briefly, when the mains supply 11 and the storage battery supply power to the power load 9 at the same time, the power grid side is provided with a counter-current prevention function, and the power of the storage battery cannot flow back into the power grid; the storage battery is preferentially used for supplying power under the condition of power limitation, then the power grid supplies power, and the diesel generating set 1 passes the load test of the experiment station during the transient test. The energy storage converter system recycles energy output by the diesel generator set 1 through charging and discharging the lithium iron phosphate battery energy storage system 6, and feeds back electric energy to the power utilization load 9 efficiently without pollution, so that the problem of electric energy waste caused by direct consumption of the electric energy through the load 2 of the test station is solved; simultaneously, the load condition of the factory building and the industrial park is dynamically detected by the park power utilization monitoring system, and is matched with the capacity of the firewood generator set, the electricity generated by firewood is dynamically distributed to the factory building and the industrial park, the purpose that the firewood generator test power generation is converted into the park self-use is realized, the recovery maximization is realized, and the purposes of reutilization and energy saving and efficiency improvement of the firewood generator test power generation are achieved.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a diesel generator leaves factory and tests energy storage and utilize device, utilizes system and energy management system EMS, its characterized in that including diesel generator set, test station load, energy storage:
the diesel generator set comprises a low-voltage unit and a high-voltage unit, wherein the low-voltage diesel generator set is used for providing a low-voltage alternating current power supply when a factory test belt runs fully and continuously, and the high-voltage diesel generator set is stepped down into the low-voltage alternating current power supply through a transformer;
the test station loads comprise resistive and inductive alternating current loads and are mainly used for factory transient index testing of the diesel generating set;
the energy storage utilization system comprises a plurality of groups of independently arranged energy storage utilization subsystems, and the single group of energy storage utilization subsystems comprise an energy storage converter system, a lithium iron phosphate battery energy storage system and a step-down transformer; the energy storage converter system comprises a first energy storage converter system and a second energy storage converter system; the lithium iron phosphate battery energy storage system comprises a lithium iron phosphate battery and a BMS system, and the BMS system is electrically connected with the lithium iron phosphate battery;
the diesel generator set is connected to a test station load through a breaker, and is simultaneously connected with a first energy storage converter system through a low-voltage alternating current bus and the breaker, the first energy storage converter system is connected to a lithium iron phosphate battery energy storage system, the lithium iron phosphate battery energy storage system is connected to a second energy storage converter system, and then the lithium iron phosphate battery energy storage system is connected to an electric load through a step-down transformer; and the energy management system EMS is connected with a controller of the diesel generator set, the BMS system and the energy storage converter system.
2. The diesel generator factory test energy storage and utilization device of claim 1, wherein: the first energy storage converter system and the second energy storage converter system are formed by connecting at least two energy storage converter modules in parallel.
3. The diesel generator factory test energy storage and utilization device according to claim 2, wherein: the first energy storage converter system is a 500kW energy storage converter system, and the second energy storage converter system is a 250kW energy storage converter system; the energy storage converter system adopts the modularized design, and every energy storage converter module is 62.5kW, and 8 modules connect in parallel and constitute 500kW energy storage converter system, and 4 modules connect in parallel and constitute 250kW energy storage converter system.
4. The diesel generator factory test energy storage and utilization device of claim 1, wherein: among the lithium iron phosphate battery energy storage system, the battery adopts lithium iron phosphate battery, and one set of 2P6S lithium iron phosphate battery constitutes single 100Ah module, and two sets of modules constitute single 200Ah battery box, and single cluster battery cluster is constituteed to 19 battery boxes and a high-voltage box, and single cluster capacity is 145.9kWh, and four clusters are parallelly connected to constitute the lithium iron phosphate battery energy storage system that capacity is 583.6 kWh.
5. The diesel generator factory test energy storage and utilization device of claim 1, wherein: the energy management system EMS comprises an acquisition layer and a cloud monitoring layer; the collection layer device is a microgrid controller, a microgrid energy cloud system is deployed at the cloud monitoring layer, and the microgrid controller is in microgrid energy cloud communication with the microgrid monitoring layer through a 4G module.
6. The diesel generator factory test energy storage and utilization device according to claim 1, wherein: the system also comprises an anti-reflux device, and the power load is connected with the commercial power through the anti-reflux device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220134153.5U CN217406194U (en) | 2022-01-19 | 2022-01-19 | Diesel generator factory test energy storage and utilization device |
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| CN202220134153.5U CN217406194U (en) | 2022-01-19 | 2022-01-19 | Diesel generator factory test energy storage and utilization device |
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| CN217406194U true CN217406194U (en) | 2022-09-09 |
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