CN110571915A - Intelligent energy storage power supply vehicle uninterrupted power supply system device and control method thereof - Google Patents
Intelligent energy storage power supply vehicle uninterrupted power supply system device and control method thereof Download PDFInfo
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- CN110571915A CN110571915A CN201910884344.6A CN201910884344A CN110571915A CN 110571915 A CN110571915 A CN 110571915A CN 201910884344 A CN201910884344 A CN 201910884344A CN 110571915 A CN110571915 A CN 110571915A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/08—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems requiring starting of a prime-mover
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- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Stand-By Power Supply Arrangements (AREA)
Abstract
The utility model provides an intelligent energy storage power supply car uninterrupted power supply system device, supply commercial power or UPS power to emergency load through single bidirectional converter, adopt bidirectional converter PCS1 and unidirectional converter PIS1 platform cooperation to use, bidirectional converter PCS passes through automatic conversion switch ATS and links to each other with power supply, the energy storage group battery passes through unidirectional converter PIS and links to each other with emergency load through static switch, the incessant on-grid operation of energy storage group and unidirectional converter PIS in the course of the work, bidirectional converter PCS output power is come through energy management system EMS control, charge and provide power for unidirectional converter PIS to the energy storage group battery in a flexible way, realize incessant power supply of emergency load and zero millisecond switching. The control strategy of the intelligent energy storage power supply vehicle uninterruptible power supply system device in different working modes is further provided, and automatic operation and abnormal protection among all the modes of the system are achieved according to established logic and control algorithms.
Description
Technical Field
the invention relates to the technical field of new energy equipment, in particular to an intelligent energy storage power supply vehicle uninterruptible power supply system device and a control method thereof.
Background
with the increasing investment of highly sensitive power electronic equipment in various industries in the current society, more and more users have continuously improved requirements on power supply reliability. In case of power failure accidents in large-scale activity places such as government agencies, important activity days, large hospitals and the like, the brought consequences are not imaginable, so that the normal living order is destroyed, huge economic loss is brought, and the normal order of the society is influenced more seriously. Therefore, in order to guarantee the uninterrupted power supply of the key load and reduce the related loss, the research on the intelligent energy storage power supply vehicle uninterrupted power supply system device is significant.
The emergency power supply vehicle widely used by the power department at present generates power by a diesel engine and takes a lead-acid battery as a backup emergency power supply system. However, the diesel engine has the defects of no-load operation for a long time, long starting time, poor power supply quality, serious waste gas pollution and incapability of realizing seamless switching. Lead-acid batteries have the disadvantages of heavy metal pollution, low energy ratio, limited charging and discharging times and the like. For the flywheel energy storage selected as the UPS mobile emergency power supply vehicle in recent years, the flywheel UPS is limited by mechanical energy storage, and the emergency time of the power which can be provided is short and the price is high.
The traditional mode that guarantees the power supply adopts is commercial power plus the power generation car, supplies with emergency load through rectification, contravariant mode, and this kind of mode all can have the commercial power to lose when, in the in-process that diesel generator or energy storage battery group started, the interval outage of a period of time in the middle of, this kind of phenomenon to some very important loads, for example, power electronic device or important sensitive device all can react, will cause very serious consequence. The uninterrupted power supply system device and the related control method are adopted, the starting time is short, and zero millisecond uninterrupted switching can be realized. Thereby ensuring the uninterrupted operation of the equipment and reducing the influence of the accident power failure on the production and the life to zero.
disclosure of Invention
Aiming at the defects of the existing emergency power protection power supply vehicle, the invention provides an intelligent energy storage power supply vehicle uninterruptible power supply system device and a control method thereof. Based on the fact that a mains supply or a UPS (uninterrupted power supply) is supplied to an emergency load through a single bidirectional converter by most emergency power supply vehicles, and an energy storage battery device is used as a standby power supply, the emergency power supply vehicle adopts 1 bidirectional converter (PCS) and 1 unidirectional converter (PIS) for cooperation, wherein an energy storage battery pack is uninterruptedly connected with the emergency load through the unidirectional converter PIS, and the energy storage battery pack and the unidirectional converter PIS are both in a working state regardless of whether the mains supply is normal or not, so that uninterrupted power supply and zero millisecond switching of the emergency load are realized. Meanwhile, the invention also designs related control strategies under different working modes aiming at the intelligent energy storage power supply vehicle uninterrupted power supply system device, and realizes automatic operation and abnormal protection among all modes of the system according to established logic and control algorithms.
The technical scheme adopted by the invention is as follows:
An intelligent energy storage power supply vehicle uninterruptible power supply system device comprises a diesel engine power supply 380V three-phase power supply, an energy storage battery system, a bidirectional converter PCS, a unidirectional converter PIS, a static switch, an automatic transfer switch ATS and related switches K1-K6;
one distribution line supplies power to 380V of mains supply and 380V of diesel engine and is connected to the input side of an automatic transfer switch ATS; the output end of the automatic transfer switch ATS is connected with one end of a switch K1; the other end of the switch K1 is connected with the alternating current side of the bidirectional converter PCS; the direct current side of the bidirectional converter PCS is respectively connected with the input end of the energy storage battery pack and one end of a switch K2; the other end of the switch K2 is connected with the direct current side of the unidirectional converter PIS; meanwhile, the output side of the energy storage battery pack is connected with the direct current side of the one-way converter PIS; the alternating current side of the unidirectional converter PIS is connected with the input side of the static switch; the output sides of the static switches are respectively connected with one end of a switch K3 and one end of a switch K5; the other end of the K3 is connected with an emergency load; the other end of the K5 is connected with a third distribution line; the second distribution line is that the automatic transfer switch ATS is connected with one end of a bypass maintenance switch K6; the other end of the K6 is connected with the input side of the static switch; the output end of the automatic transfer switch ATS of the third distribution line is connected with one end of a switch K4; the other end of the switch K4 is connected to the vehicle load.
Further, the apparatus also includes an energy management system, EMS; the energy management system is respectively connected with the bidirectional converter PCS, the unidirectional converter PIS and the energy storage battery system through the CAN.
still further, the apparatus further comprises a battery management system; the battery management system is in communication connection with the energy storage battery pack and the charging and discharging protection circuit.
a control method of an intelligent energy storage power supply vehicle uninterruptible power supply system device comprises a commercial power operation mode, a battery independent power supply mode, a related equipment maintenance state power supply mode and an energy storage battery system maintenance mode, wherein:
the power supply operation mode is used for supplying power under the condition that the power supply is normal, after the power supply device, the power supply provides power for the direct current bus through the automatic transfer switch ATS, the output power of the PCS of the bidirectional converter is adjusted according to the output power of the PIS of the unidirectional converter, and if the output power of the PIS is smaller than a set value and the charge quantity of the lithium iron phosphate energy storage battery is smaller than a set value of the charge quantity, the PCS charges the battery with the set value power. In the process, when the load carried by the PIS is found to be changed too much, the distribution of the output power of the PCS of the bidirectional converter is adjusted in time so as to better meet the power demand of the emergency load;
The battery independent power supply mode is used for adopting the battery independent power supply for ensuring the uninterrupted power supply for the emergency load when the commercial power is cut off or fails; when the mains supply is powered off, all loads are switched to be output by the energy storage battery pack through the unidirectional converter PIS, the mains supply is seamlessly replaced for supplying the loads, meanwhile, the ATS is switched to the standby power supply, the voltage of the standby power supply is checked, if the voltage does not meet the requirement, the PCS of the bidirectional converter quits running, and if the voltage meets the requirement, the PCS of the bidirectional converter works to set the output power to supply power to the direct-current bus, so that the diesel engine is used for generating a charging power supply, and the normal running of the loads is ensured; the two-way converter PCS tracks the state of the mains supply in real time, after the mains supply is recovered, the input power supply of the generator is switched to the working state of the mains supply through the automatic transfer switch ATS, and meanwhile, the generator is controlled to stop working.
the power supply mode of the related equipment maintenance state is used for supplying power under the condition that the inverter device fails, when the uninterrupted power supply system device fails, the bypass maintenance switch K6 is closed, the static switch is switched to a second distribution line, and uninterrupted power supply of a load is ensured;
The energy storage battery system maintenance mode is used for controlling the maintenance of the energy storage battery in a long-time standing state, the ATS starts the diesel generator, the automatic transfer switch ATS is automatically switched to the side of the diesel generator, the switch K1 is closed, the AC side of the bidirectional converter PCS is accessed, and the energy storage battery pack is charged through the PCS; and meanwhile, the switch K5 is closed, and the energy storage battery pack discharges the load in the vehicle through the PIS.
The invention has the beneficial effects that:
1. aiming at the problems that the conventional emergency power supply vehicle cannot realize uninterrupted power supply and zero millisecond switching, air pollution is serious, noise is high and the like in the using process, two converter connecting circuits are designed, the output power is flexibly controlled, the uninterrupted power supply vehicle capable of realizing uninterrupted power supply and zero millisecond switching technology is realized, and the performance of the conventional emergency power supply vehicle is greatly improved.
2. The invention provides a control strategy of an intelligent energy storage power supply vehicle uninterruptible power supply system device aiming at different working modes and working scenes of an emergency power supply vehicle, aiming at different working environments, and realizing the switching of uninterruptible power supply among the different working modes of the emergency power supply vehicle.
drawings
FIG. 1 is a topology diagram of an uninterruptible power supply system of an intelligent energy storage power vehicle according to the present invention;
Fig. 2 is a topological diagram of the embodiment of the present invention in the commercial power operation mode;
FIG. 3 is a topology diagram of the operation of the battery pack in the independent operation mode according to the embodiment of the present invention;
FIG. 4 is a schematic diagram of a working topology in a maintenance mode of an uninterruptible power supply system according to an embodiment of the present invention;
FIG. 5 is a topology diagram of the operation in the battery maintenance mode according to the embodiment of the present invention;
Fig. 6 is a schematic flow chart of a control method in a commercial power operating mode of an uninterruptible power supply system device of an intelligent energy storage power supply vehicle;
fig. 7 is a schematic flow chart of a control method in an independent working mode of an energy storage battery of an uninterruptible power supply system of an intelligent energy storage power supply vehicle;
fig. 8 is a schematic flow chart of a control method in a battery maintenance mode of an uninterruptible power supply system device of an intelligent energy storage power supply vehicle.
Detailed Description
the drawings are for illustrative purposes only and are not to be construed as limiting the patent. The technical solution of the present invention is further described below with reference to the accompanying drawings and examples.
Referring to fig. 1 to 8, an intelligent uninterruptible power supply system device for an energy storage power supply vehicle includes a dual power automatic transfer switch ATS, a bidirectional converter PCS, a unidirectional converter PIS, an energy storage battery system, a static transfer switch and switches K1-K6.
One distribution line supplies power to 380V of mains supply and 380V of diesel engine and is connected to the input side of an automatic transfer switch ATS; the output end of the automatic transfer switch ATS is connected with one end of a switch K1; the other end of the switch K1 is connected with the alternating current side of the bidirectional converter PCS; the direct current side of the bidirectional converter PCS is respectively connected with the input end of the energy storage battery pack and one end of a switch K2; the other end of the switch K2 is connected with the direct current side of the unidirectional converter PIS; meanwhile, the output side of the energy storage battery pack is connected with the direct current side of the one-way converter PIS; the alternating current side of the unidirectional converter PIS is connected with the input side of the static switch; the output sides of the static switches are respectively connected with one end of a switch K3 and one end of a switch K5; the other end of the K3 is connected with an emergency load; the other end of the K5 is connected with a third distribution line; the second distribution line is that the automatic transfer switch ATS is connected with one end of a bypass maintenance switch K6; the other end of the K6 is connected with the input side of the static switch; the output end of the automatic transfer switch ATS of the third distribution line is connected with one end of a switch K4; the other end of the switch K4 is connected to the vehicle load.
further, the apparatus also includes an energy management system, EMS; the energy management system is respectively connected with the bidirectional converter PCS, the unidirectional converter PIS and the energy storage battery system through the CAN.
Still further, the apparatus further comprises a battery management system; the battery management system is in communication connection with the energy storage battery pack and the charging and discharging protection circuit.
The power supply system of the embodiment has the advantages of simple structure and low cost, and the black start function of the mobile power supply vehicle is added.
The energy storage battery system and the one-way converter PIS form an energy storage battery pack uninterrupted power supply system, and the alternating current bus and the energy storage battery pack jointly form an emergency load power supply system. The energy storage battery pack power supply system is connected to the input end of the static switch, the alternating current bus is connected to the input end of the static switch through the bypass overhaul switch K6, the output end of the static switch is connected to the load switch K3 and the switch K5, and the load uninterruptible power supply system is formed jointly.
The alternating current bus supplies power for all loads in the vehicle, the alternating current bus is connected into the switch K4, and meanwhile, the energy storage battery pack power supply system is connected into the switch K4 through the manual switch K5, so that when the alternating current bus breaks down, the energy storage battery pack power supply system can be connected into the load in the vehicle through the manual switch K5, and the load in the vehicle is guaranteed to supply power uninterruptedly.
380V commercial power, the power generation of 380V diesel engine insert two input ends of automatic transfer switch ATS respectively, constitute two power supply system jointly, and wherein the 380V commercial power is power commonly used, and the power generation of 380V diesel engine is stand-by power supply, can make two way power automatic switch-over, output termination alternating current bus.
The energy storage battery power supply system mainly comprises an alternating current bus, a bidirectional converter PCS, a direct current bus, a unidirectional converter PIS and an energy storage battery pack, wherein the output end of the alternating current bus is connected to the alternating current side of the bidirectional converter PCS, the direct current side of the bidirectional converter PCS is divided into two paths, one path of the two paths of.
The energy management system is in communication connection with the automatic switch conversion switch ATS, the bidirectional converter PCS and the unidirectional converter PIS through CAN buses respectively, and the energy storage system is connected with the monitoring terminal through CAN buses.
a control method of an intelligent energy storage power supply vehicle uninterruptible power supply system device comprises a mains supply mode, a battery independent power supply mode, a related equipment maintenance state power supply mode and an energy storage battery system maintenance mode, wherein: the mains supply mode is shown in fig. 2, the battery independent supply mode is shown in fig. 3, the power supply mode in the related equipment maintenance state is shown in fig. 4, and the energy storage battery maintenance mode is shown in fig. 5.
a corresponding control strategy flow chart for the mains supply mode of fig. 2 is shown in fig. 6, and the detailed steps are as follows:
(1) When an uninterrupted emergency power supply system based on the lithium iron phosphate energy storage battery system supplies power to an emergency load, after the mobile energy storage vehicle is firstly connected with a mains supply, when the automatic transfer switch ATS detects that the mains supply is normal, the switches K1 on the mains supply side of the automatic transfer switch ATS and the input side of the alternating-current bus are closed, and power is supplied to the alternating-current bus;
(2) the energy management system EMS firstly starts the bidirectional converter PCS through the CAN bus, sets the output power of the bidirectional converter PCS to be 0, then starts the unidirectional converter PIS, and simultaneously reads the output power of the PCS and the PIS;
(3) When the output power of the PIS is smaller than the set output power and the SOC of the energy storage battery pack is smaller than the set value, the energy management system EMS controls the PCS to charge the battery through the direct-current bus so as to ensure that the energy storage battery uninterrupted power supply system works stably;
(4) in the emergency power supply process, if the emergency load is suddenly increased, the switch K2 is closed, and the bidirectional converter PCS simultaneously supplies partial power to the unidirectional converter PIS so as to meet the load requirement;
(5) when the SOC of the energy storage battery pack is larger than a set value, the output power of the emergency load is mainly provided by the energy storage battery pack, and meanwhile, the PCS (bidirectional converter) tracks the output power of the unidirectional converter in real time.
A flowchart of a control strategy corresponding to the battery independent power supply mode in fig. 3 is shown in fig. 7, and the detailed steps are as follows:
(1) After the mains supply is powered down, the power supply of the emergency load is transferred to the energy storage battery pack and output through the PIS, the switch K6 is closed, the vehicle-mounted power supply is also supplied by the energy storage battery pack, and the uninterrupted power supply system of the energy storage battery pack does not generate any mutation before and after the mains supply is powered down, so that the emergency load can seamlessly replace the mains supply to the load;
(2) After the battery independent operation mode is entered, when the output power of the unidirectional converter PIS is greater than the maximum output power of the unidirectional converter PIS, the PIS gives an alarm and stops operating, meanwhile, the bypass maintenance switch K7 is closed, the automatic transfer switch ATS2 is controlled to transfer the input side to a bypass switch branch, and the diesel engine generates electricity to supply power for the whole load;
(3) In the process of independent power supply of the battery, the energy management system simultaneously detects whether the voltage and the frequency of the side of the standby power supply are normal, if the input side of the ATS1 is switched into the diesel generator, if the input side of the ATS1 is abnormal, the PCS of the bidirectional converter is pushed out to operate, and the PCS continues to operate in the independent working mode of the battery;
(4) If the diesel engine is in power generation operation, the bidirectional converter PCS is started at the same time, the energy management system EMS simultaneously reads the PCS and the PIS output power, if the charge SOC of the energy storage battery pack is larger than a set value, the PCS output power tracks the PIS output power in real time, and when the charge SOC of the energy storage battery pack is smaller than the set value, the PCS charges the battery pack with the set power;
(5) meanwhile, the bidirectional converter tracks the state of the mains supply in real time, after the mains supply is recovered, the input power supply of the generator is switched back to the mains supply for working through the automatic transfer switch ATS1, and meanwhile, the diesel generator is stopped to work through the energy management system EMS.
a flowchart of a control strategy corresponding to the battery maintenance mode shown in fig. 4 is shown in fig. 8, and the detailed steps are as follows:
(1) Considering the long-time static state of the energy storage battery pack, the battery pack needs to be charged and discharged periodically in order to prevent the over-discharge condition of the battery pack;
(2) starting a diesel generator, automatically switching an automatic transfer switch ATS1 to a generator side, closing a switch K1, accessing to a bidirectional converter PCS alternating current side, and charging an energy storage battery pack through PCS;
(3) and meanwhile, the switch K5 is closed, and the energy storage battery pack discharges the load in the vehicle through the PIS.
Claims (4)
1. The utility model provides an intelligent energy storage formula uninterrupted power system device which characterized in that: the device comprises 380V three-phase power supplied by a diesel engine, an energy storage battery system, a bidirectional converter PCS, a unidirectional converter PIS, a static switch, an automatic transfer switch ATS and related switches K1-K6;
one power supply line supplies power for 380V of mains supply and 380V of diesel engine and is connected to the input side of the automatic transfer switch ATS; the output end of the automatic transfer switch ATS is connected with one end of a switch K1; the other end of the switch K1 is connected with the alternating current side of the bidirectional converter PCS; the direct current side of the bidirectional converter PCS is respectively connected with the input end of the energy storage battery pack and one end of a switch K2; the other end of the switch K2 is connected with the direct current side of the unidirectional converter PIS; meanwhile, the output side of the energy storage battery pack is connected with the direct current side of the one-way converter PIS; the alternating current side of the unidirectional converter is connected with the input side of the static switch; the output sides of the static switches are respectively connected with one end of a switch K3 and one end of a switch K5; the other end of the K3 is connected with an emergency load; the other end of the K5 is connected with a third distribution line; the second distribution line is that the automatic transfer switch ATS is connected with one end of a bypass maintenance switch K6; the other end of the K6 is connected with the input side of the static switch; the output end of the automatic transfer switch ATS of the third distribution line is connected with one end of a switch K4; the other end of the switch K4 is connected to the vehicle load.
2. The intelligent energy-storage uninterruptible power supply system device of claim 1, wherein: the apparatus further comprises an energy management system, EMS; the energy management system is respectively connected with the bidirectional converter PCS, the unidirectional converter PIS and the energy storage battery system through CAN buses.
3. an intelligent energy-storage uninterruptible power supply system as claimed in claim 1 or 2, wherein: the apparatus also includes a battery management system; the battery management system is in communication connection with the energy storage battery pack and the charging and discharging protection circuit.
4. a control method of an intelligent energy-storage uninterruptible power supply system device according to claim 1, characterized in that: the control method comprises a commercial power operation mode, a battery independent power supply mode, a related equipment maintenance state power supply mode and an energy storage battery system maintenance mode, wherein:
The commercial power operation mode is used for supplying power under the condition that commercial power is normal, after a commercial power device, commercial power supplies power to a direct-current bus through an automatic transfer switch ATS, the output power of the PCS of the bidirectional converter is adjusted according to the output power of the PIS of the unidirectional converter, if the output power of the PIS is smaller than a set value and the charge amount of the lithium iron phosphate energy storage battery is smaller than a set value of the charge amount, the PCS charges the battery with the set value of the power, and when the load carried by the PIS is found to be changed excessively in the process, the distribution of the output power of the PCS of the bidirectional converter is adjusted in time so as to better meet the;
the battery independent power supply mode is used for adopting the battery independent power supply for ensuring the uninterrupted power supply for the emergency load when the commercial power is cut off or fails; when the mains supply is powered off, all loads are switched to be output by the energy storage battery pack through the unidirectional converter PIS, the mains supply is seamlessly replaced for supplying the loads, meanwhile, the ATS is switched to the standby power supply, the voltage of the standby power supply is checked, if the voltage does not meet the requirement, the PCS of the bidirectional converter quits running, and if the voltage meets the requirement, the PCS of the bidirectional converter works to set the output power to supply power to the direct-current bus, so that the diesel engine is used for generating a charging power supply, and the normal running of the loads is ensured; the method comprises the following steps that a bidirectional converter PCS tracks the state of commercial power in real time, when the commercial power is recovered, an input power supply of a generator is switched to the working state of the commercial power through an automatic transfer switch ATS, and the generator is controlled to stop working;
the power supply mode of the related equipment maintenance state is used for supplying power under the condition that the inverter device fails, when the uninterrupted power supply system device fails, the bypass maintenance switch K6 is closed, the static switch is switched to a second distribution line, and uninterrupted power supply of a load is ensured;
The energy storage battery system maintenance mode is used for controlling the maintenance of the energy storage battery in a long-time standing state, the ATS starts the diesel generator, the automatic transfer switch ATS is automatically switched to the side of the diesel generator, the switch K1 is closed, the AC side of the bidirectional converter PCS is accessed, and the energy storage battery pack is charged through the PCS; and meanwhile, the switch K5 is closed, and the energy storage battery pack discharges the load in the vehicle through the PIS.
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| CN111355281A (en) * | 2020-03-26 | 2020-06-30 | 国网江西省电力有限公司电力科学研究院 | Vehicle-mounted movable energy storage system |
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| CN112186829A (en) * | 2020-08-25 | 2021-01-05 | 国网江苏综合能源服务有限公司 | Mobile energy storage shelter power supply system and control method |
| CN112165156A (en) * | 2020-09-23 | 2021-01-01 | 深圳市拓邦锂电池有限公司 | Charging/discharging device, battery system, charging/discharging control method, and storage medium |
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| CN113410904A (en) * | 2021-03-29 | 2021-09-17 | 广东电网有限责任公司电力科学研究院 | Multi-module parallel emergency power supply and control method |
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| CN113241787A (en) * | 2021-05-25 | 2021-08-10 | 国网北京市电力公司 | Power supply coordination control method and device for power generation vehicle system |
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| CN113691144A (en) * | 2021-08-06 | 2021-11-23 | 天津捷强动力装备股份有限公司 | Power converter control system for outputting stable voltage |
| CN113437789A (en) * | 2021-08-27 | 2021-09-24 | 南京力骏新能源储能研究院有限公司 | Energy storage system with reconfigurable topology, mobile energy storage shelter and multi-element application method thereof |
| CN114243676A (en) * | 2021-10-29 | 2022-03-25 | 魔储科技(北京)有限公司 | Remote power supply system and control method thereof |
| CN114243676B (en) * | 2021-10-29 | 2024-03-05 | 魔储科技(北京)有限公司 | Remote power supply system and control method thereof |
| CN113922493B (en) * | 2021-11-16 | 2023-09-22 | 江苏晨昕闳达电力科技有限公司 | Automatic switching type standby power supply access system based on mobile energy storage and control method thereof |
| CN113922493A (en) * | 2021-11-16 | 2022-01-11 | 江苏晨昕闳达电力科技有限公司 | Self-switching type standby power supply access system based on mobile energy storage and control method thereof |
| CN114268166A (en) * | 2021-11-24 | 2022-04-01 | 国网浙江省电力有限公司诸暨市供电公司 | Mobile high-reliability power-off zero-perception uninterrupted switching system |
| CN114508383A (en) * | 2022-02-09 | 2022-05-17 | 山东正晨科技股份有限公司 | Tunnel electric power support system based on electric power monitoring |
| CN115719964A (en) * | 2022-09-06 | 2023-02-28 | 新至储能科技(浙江)有限公司 | Energy storage battery automatic charging and discharging system and method based on load tracking |
| CN116111714A (en) * | 2023-04-11 | 2023-05-12 | 浙江德塔森特数据技术有限公司 | Uninterruptible power supply, control method and device thereof and readable medium |
| CN116455047A (en) * | 2023-06-14 | 2023-07-18 | 京清数电(北京)技术有限公司 | Control method and device for solid-state change-over switch and readable storage medium |
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Application publication date: 20191213 |