CN111181240A - Connection method of energy storage battery and UPS and charge-discharge control method - Google Patents
Connection method of energy storage battery and UPS and charge-discharge control method Download PDFInfo
- Publication number
- CN111181240A CN111181240A CN201910824327.3A CN201910824327A CN111181240A CN 111181240 A CN111181240 A CN 111181240A CN 201910824327 A CN201910824327 A CN 201910824327A CN 111181240 A CN111181240 A CN 111181240A
- Authority
- CN
- China
- Prior art keywords
- energy storage
- storage battery
- pcs
- monitoring device
- battery
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
-
- 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
-
- 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 invention provides a method for connecting an energy storage battery and a UPS (uninterrupted power supply), wherein the energy storage battery is used for replacing a lead-acid battery, the energy storage battery is connected with a PCS (Power control System) or an inverter, the energy storage battery is connected with a UPS host machine through an anti-reverse diode, and the anti-reverse diode is connected with a contactor in parallel. The connection method does not need to transform a UPS host, and can realize the timely power supply of the energy storage battery under the condition of mains supply outage. The invention also provides a charging and discharging method of the energy storage battery, which comprises the steps of controlling the PCS, the inverter and the contactor through the monitoring device, setting a target standby capacity, enabling the electric quantity of the energy storage battery to reach the target standby capacity all the time under the control of the monitoring device, and simultaneously taking the difference between the total capacity of the energy storage battery and the target standby capacity as the automatic charging and discharging capacity to automatically charge the energy storage battery and automatically discharge the PCS or the inverter, so that the floating charge of the battery can be avoided, and the actual state of the energy storage battery can be monitored through the discharge of the PCS or the inverter, thereby improving the reliability of the energy storage battery.
Description
Technical Field
The invention belongs to the power electronic technology, and particularly relates to a connection method of an energy storage battery and a UPS and a charge-discharge control method.
Background
UPS (Uninterruptible Power Supply), that is, an Uninterruptible Power Supply, is a system device in which a storage battery (mostly a lead-acid maintenance-free storage battery) is connected to an electronic circuit, and dc Power is converted into commercial Power through a module circuit such as an inverter, and is mainly used to provide stable and uninterrupted Power Supply for a computer, a computer network system, or other Power electronic devices, such as an electromagnetic valve, a pressure transmitter, and the like, and is a fundamental stone for ensuring information security and industrial automation. When the commercial power input is normal, the UPS supplies the commercial power to the load for use after stabilizing the voltage, and the UPS is an alternating current type voltage stabilizer and also charges the battery in the machine; when the commercial power is interrupted (power failure in accident), the UPS immediately supplies 220V alternating current to the load by switching and converting the direct current electric energy of the battery through the inverter, so that the load keeps normal work and protects the software and hardware of the load from being damaged.
In the UPS, in addition to the reliability of the electronic devices, the secondary battery is also a critical device. Lead-acid batteries are generally adopted as storage batteries in UPS on the market at present. Although lead-acid batteries have made progress in the aspects of materials, manufacturing processes and the like, the lead-acid batteries still belong to consumable products, and have the problems of long-term floating charge, need of regular maintenance and repair, short service life and energy consumption resource consumption.
Energy storage technology is technology that stores energy through a device or physical medium for later use when needed. The energy storage technology is divided into mechanical energy storage, electrical energy storage, electrochemical energy storage, thermal energy storage and chemical energy storage according to storage media. In an energy storage System, a battery is used as an electrochemical energy storage medium, and an important component matched with the battery is a DC/AC bidirectional converter based on a PWM technology, namely an energy storage converter (Power Conversion System, hereinafter referred to as PCS). The PCS is composed of a DC/AC bidirectional converter, a control unit and the like, can control the charging and discharging processes of the battery, performs alternating current-direct current conversion, and realizes mutual interaction between a power grid and an energy storage battery, namely the power grid can charge the battery, and the battery can also discharge to the power grid under the condition of no power grid to supply power for an alternating current load.
CN104104136A discloses a method for accessing a new energy storage system to a UPS, wherein a new energy storage battery is accessed to a UPS host through a DC/DC device and is connected with an original lead-acid battery in parallel for operation. When the low-voltage alternating-current circuit normally supplies power to the UPS host, the new energy storage battery is disconnected with the UPS host, and the energy storage battery is charged by the PCS; when the low-voltage alternating-current line fails, the new energy storage battery is disconnected from the PCS and is switched to the UPS host, and the new energy storage battery and the primary lead-acid battery jointly supply power to the UPS host.
The new energy storage battery is added in the method, the problem of long-term floating charge of the original lead-acid battery is not solved, and potential safety hazards exist all the time; in addition, the new energy storage battery is switched in only when the low-voltage alternating current circuit fails, the switching time is needed for the connection of the new energy storage battery, and if the original lead-acid battery fails, the new energy storage battery cannot guarantee that the backup power supply supplies power in time.
Disclosure of Invention
The invention provides a method for connecting an energy storage battery and a UPS (uninterrupted power supply), which can be used for supplying power to the energy storage battery in time under the condition of mains supply outage.
The technical scheme of the invention is as follows: a method for connecting an energy storage battery to a UPS, the UPS shown in fig. 1 includes a UPS host, a lead-acid battery, an ac load, and a utility power (i.e., ac power), the UPS host includes a power supply device for converting the utility power into dc power and a power supply device for converting the dc power into the utility power; the method is characterized in that:
as shown in fig. 2, the lead-acid battery is replaced with an energy storage battery; the energy storage battery is connected with the PCS, and the energy storage battery and the mains supply are mutually converted through the PCS; the energy storage battery is connected with the UPS host through an anti-reverse diode, the anti-reverse diode is connected with the contactor in parallel, the anti-reverse diode is used for preventing the UPS host from charging the energy storage battery, the contactor is connected, and the UPS host charges the energy storage battery;
alternatively, as shown in fig. 3, the lead-acid battery is replaced with an energy storage battery; the energy storage battery is connected with a load through an inverter; the energy storage battery is connected with the UPS host through an anti-reverse diode, the anti-reverse diode is connected with the contactor in parallel, the anti-reverse diode is used for preventing the UPS host from charging the energy storage battery, the contactor is connected, and the UPS host charges the energy storage battery;
after the energy storage battery is connected with the UPS as shown in fig. 2, the invention further provides a charge and discharge control method, which can prevent the energy storage battery from floating, realize automatic inspection of the energy storage battery, and thus improve the reliability of the energy storage battery. The control method is shown in fig. 4 and 5, the PCS and the contactor are controlled by a monitoring device, and the control method specifically comprises the following steps:
(1) the monitoring device sets a target standby power capacity, wherein the target standby point capacity is smaller than the total capacity of the energy storage battery;
(2) the electric quantity of the energy storage battery is monitored; when the electric quantity is equal to the total capacity of the energy storage battery, the battery is fully charged, and the following step (3) is carried out; otherwise, the battery is not fully charged, and the following step (4) is carried out;
(3) the monitoring device instructs the PCS to stop charging and the contactor to open; then, the electric quantity of the energy storage battery is continuously monitored, when the electric quantity is larger than or equal to the target standby capacity, the monitoring device instructs the PCS to discharge, and when the electric quantity is smaller than the target standby capacity, the following step (4) is executed;
(4) the monitoring device instructs the PCS to charge or/and the contactor to close to cause the UPS to charge the battery, and step (2) is performed.
In practical applications, in order to prevent the PCS from having insufficient charging capability, it is preferable to switch to the UPS host to charge the energy storage battery. In this case, as shown in fig. 6, preferably, the monitoring device further sets a charging power threshold in step (1), and first determines the magnitudes of the charging power of the PCS and the charging power threshold in step (4); when the charging power of the PCS is larger than or equal to the charging power threshold value, the monitoring device instructs the PCS to charge, and then the step (2) is executed; when the charging power of the PCS is smaller than the charging power threshold value, the monitoring device instructs the contactor to be closed, and then the step (2) is executed.
Preferably, the charge of the energy storage battery is monitored by a Battery Management System (BMS) in the energy storage battery.
Preferably, in the step (1), the target standby capacity is 70% -90% of the total capacity of the energy storage battery.
Preferably, in the step (3), the monitoring device sets PCS to perform discharge at fixed time and fixed quantity.
Preferably, in the step (4), the monitoring device sets the PCS to perform charging at a fixed timing.
Preferably, in the step (3) and the step (4), the monitoring device sets the PCS to perform charging and discharging in the peak-valley power period.
After the energy storage battery is connected with the UPS as shown in fig. 3, the invention further provides a charge and discharge control method, which can prevent the energy storage battery from floating, and realize automatic inspection of the energy storage battery, thereby improving the reliability of the energy storage battery. As shown in fig. 7 and 8, the control method for controlling the inverter and the contactor through the monitoring device specifically includes the following steps:
(1) the monitoring device sets a target standby power capacity, wherein the target standby point capacity is smaller than the total capacity of the energy storage battery;
(2) the electric quantity of the energy storage battery is monitored; when the electric quantity is equal to the total capacity of the energy storage battery, the battery is fully charged, and the following step (3) is carried out; otherwise, the battery is not fully charged, and the following step (4) is carried out;
(3) the monitoring device instructs the contactor to open; then, the electric quantity of the energy storage battery is continuously monitored, when the electric quantity is larger than or equal to the target standby capacity, the monitoring device instructs to start the inverter, the energy storage battery discharges to the self-checking load, and when the electric quantity is smaller than the target standby capacity, the following step (4) is executed;
(4) and (3) the monitoring device instructs the inverter to be closed, and simultaneously closes the contactor to enable the UPS to charge the battery, and the step (2) is executed.
Preferably, the charge of the energy storage battery is monitored by a Battery Management System (BMS) in the energy storage battery.
Preferably, in the step (1), the target standby capacity is 70% -90% of the total capacity of the energy storage battery.
Preferably, in the step (3), the monitoring device sets the inverter to perform discharge at a fixed time and a fixed amount.
Preferably, in the step (3), the monitoring device sets the inverter to discharge in a peak-to-valley period.
Preferably, in the step (4), the monitoring device sets the UPS to be charged in a peak-to-valley power period.
Compared with the prior art, the invention has the following advantages:
1. the invention replaces the lead-acid battery with the energy storage battery, does not need to transform a UPS host machine, only adopts the anti-reverse circuit and the contactor to connect the energy storage battery with the UPS, and can realize the timely power supply of the energy storage battery under the condition of commercial power outage.
2. According to the invention, through setting the target standby power capacity, the electric quantity of the energy storage battery is always enabled to reach the target standby power capacity under the control of the monitoring device, so that sufficient preparation can be made for the energy storage battery to supply power in time under the condition of mains supply power failure; meanwhile, the difference (called residual capacity) between the total capacity of the energy storage battery and the target standby capacity is used as the automatic charging and discharging capacity, the energy storage battery is automatically charged and automatically discharged by the PCS or the inverter, on one hand, the floating charge of the battery can be avoided, on the other hand, the actual state of the energy storage battery can be monitored through the discharging of the PCS or the inverter, the problem that the fault of the energy storage battery is not found in time is avoided, and therefore the reliability of the energy storage battery is improved.
3. When the energy storage battery is connected with the PCS, in the charging process of the energy storage battery, the invention can preferably select the PCS charging or the UPS charging by setting the charging power threshold value, so that the energy storage battery can be preferably switched to the UPS host machine to charge the energy storage battery under the condition that the PCS charging capacity is insufficient.
4. In the invention, the charge and discharge strategy of the residual electric quantity can be set and operated by the monitoring device, for example, the charge and discharge physical examination can be set at regular time and quantity every day, the reliability of the battery is improved, or the automatic operation of the monitoring program in the peak-valley electricity time period is set, and the energy conservation and the like are realized by utilizing the peak-valley electricity price difference.
5. In the invention, the target standby capacity, the charging power threshold value and the like can be set by the monitoring device, so that the target standby capacity, the charging power threshold value and the like can be adjusted according to actual conditions.
Drawings
Fig. 1 is a diagram illustrating a conventional UPS connection structure.
Fig. 2 is one of the connection structures of the energy storage battery and the UPS in the present invention.
Fig. 3 is a second diagram of the connection structure between the energy storage battery and the UPS in the present invention.
Fig. 4 is a structure diagram of charge and discharge control when the energy storage battery is connected to the PCS in the present invention.
Fig. 5 is one of the charge and discharge control flow charts when the energy storage battery is connected to the PCS in the present invention.
Fig. 6 is a second structure diagram of charge and discharge control when the energy storage battery is connected to the PCS.
Fig. 7 is a flowchart of charge and discharge control when the energy storage battery is connected to the inverter according to the present invention.
Fig. 8 is a flowchart of the charge and discharge control when the energy storage battery is connected to the inverter according to the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following examples and drawings, which are intended to facilitate the understanding of the present invention and are not intended to limit the present invention in any way.
Example 1:
fig. 2 shows a method for connecting an energy storage battery to a UPS, where the UPS includes a UPS host, an energy storage battery, an ac load, and a utility power. The UPS host comprises a power supply device for converting commercial power into direct current and a power supply device for converting the direct current into the commercial power. The energy storage battery is connected with the PCS, and the energy storage battery and the mains supply are mutually converted through the PCS. The energy storage battery is connected with the UPS host through an anti-reverse diode, and the anti-reverse diode is connected with the contactor in parallel. The anti-reverse diode is used for preventing the UPS host from charging the energy storage battery. And the contactor is switched on, and the UPS host machine charges the energy storage battery. The energy storage battery can supply power to the load in time under the condition of commercial power outage.
After the energy storage battery is connected with the UPS, as shown in fig. 4, the PCS and the contactor are controlled by the monitoring device, and a specific control method is shown in fig. 5, and the method includes the following steps:
(1) the monitoring device sets the target standby power capacity to be 80% of the total capacity of the energy storage battery;
(2) the energy storage battery comprises a Battery Management System (BMS), and the BMS monitors the electric quantity of the energy storage battery; when the electric quantity is equal to the total capacity of the energy storage battery, the battery is fully charged, and the following step (3) is carried out; otherwise, the battery is not fully charged, and the following step (4) is carried out;
(3) the monitoring device instructs the PCS to stop charging and the contactor to open; then, the BMS continuously monitors the electric quantity of the energy storage battery, when the electric quantity is larger than or equal to the target standby capacity, the monitoring device instructs the PCS to discharge, and when the electric quantity is smaller than the target standby capacity, the following step (4) is executed;
(4) the monitoring device instructs the PCS to charge, or/and the contactor is closed to cause the UPS to charge the battery, and step (2) is performed.
Example 2:
in this embodiment, the connection method between the energy storage battery and the UPS is the same as that in embodiment 1.
After the energy storage battery is connected with the UPS, as shown in fig. 4, the PCS and the contactor are controlled by the monitoring device, and a specific control method is shown in fig. 6, and the method includes the following steps:
(1) the monitoring device sets a target standby power capacity and a charging power threshold, wherein the target standby power capacity is 80% of the total capacity of the energy storage battery, and the charging power threshold is 10% of the total power of the UPS;
(2) the energy storage battery comprises a Battery Management System (BMS), and the BMS monitors the electric quantity of the energy storage battery; when the electric quantity is equal to the total capacity of the energy storage battery, the battery is fully charged, and the following step (3) is carried out; otherwise, the battery is not fully charged, and the following step (4) is carried out;
(3) the monitoring device instructs the PCS to stop charging and the contactor to open; then, the BMS continuously monitors the electric quantity of the energy storage battery, when the electric quantity is larger than or equal to the target standby capacity, the monitoring device instructs the PCS to discharge, and when the electric quantity is smaller than the target standby capacity, the following step (4) is executed;
(4) comparing the charging power of the PCS with the charging power threshold value; when the charging power of the PCS is larger than or equal to the charging power threshold value, the monitoring device instructs the PCS to charge, and then the step (2) is executed; when the charging power of the PCS is smaller than the charging power threshold value, the monitoring device instructs the contactor to be closed, and then the step (2) is executed.
Example 3:
fig. 3 shows a method for connecting an energy storage battery to a UPS, where the UPS includes a UPS host, an energy storage battery, an ac load, and a utility power. The UPS host comprises a power supply device for converting commercial power into direct current and a power supply device for converting the direct current into the commercial power. The energy storage battery is connected with the load through the inverter. The energy storage battery is connected with the UPS host through an anti-reverse diode, and the anti-reverse diode is connected with the contactor in parallel. The anti-reverse diode is used for preventing the UPS host from charging the energy storage battery. And the contactor is switched on, and the UPS host machine charges the energy storage battery. The energy storage battery can supply power to the load in time under the condition of commercial power outage.
After the energy storage battery is connected with the UPS, as shown in fig. 7, the inverter and the contactor are controlled by the monitoring device, and a specific control method is shown in fig. 8, and includes the following steps:
(1) the monitoring device sets the target standby power capacity to be 70% of the total capacity of the energy storage battery;
(2) the energy storage battery comprises a Battery Management System (BMS), and the BMS monitors the electric quantity of the energy storage battery; when the electric quantity is equal to the total capacity of the energy storage battery, the battery is fully charged, and the following step (3) is carried out; otherwise, the battery is not fully charged, and the following step (4) is carried out;
(3) the monitoring device instructs the contactor to open; then, the BMS continuously monitors the electric quantity of the energy storage battery, when the electric quantity is larger than or equal to the target standby capacity, the monitoring device instructs to start the inverter, the energy storage battery discharges to the self-checking load, and when the electric quantity is smaller than the target standby capacity, the following step (4) is executed;
(4) and (3) the monitoring device instructs the inverter to be closed, and simultaneously closes the contactor to enable the UPS to charge the battery, and the step (2) is executed.
The embodiments described above are intended to illustrate the technical solutions of the present invention in detail, and it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modification, supplement or similar substitution made within the scope of the principles of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A method for connecting an energy storage battery with a UPS (uninterrupted Power supply) comprises a UPS host, a lead-acid battery, an alternating-current load and a mains supply, wherein the UPS host comprises a power supply device for converting the mains supply into direct current and a power supply device for converting the direct current into the mains supply; the method is characterized in that:
replacing the lead acid battery with an energy storage battery;
the energy storage battery is connected with the UPS host through an anti-reverse diode, the anti-reverse diode is connected with the contactor in parallel, the anti-reverse diode is used for preventing the UPS host from charging the energy storage battery, the contactor is connected, and the UPS host charges the energy storage battery;
the energy storage battery is connected with the PCS, and the energy storage battery and the mains supply are mutually converted through the PCS; or the energy storage battery is connected with an inverter and is connected with a load through the inverter.
2. The charge/discharge control method for connecting the energy storage battery to the UPS by using the connection method according to claim 1, wherein: the energy storage battery is connected with the PCS, and the PCS and the contactor are controlled by the monitoring device, and the energy storage battery monitoring method comprises the following steps:
(1) the monitoring device sets a target standby power capacity, wherein the target standby point capacity is smaller than the total capacity of the energy storage battery;
(2) the electric quantity of the energy storage battery is monitored; when the electric quantity is equal to the total capacity of the energy storage battery, the battery is fully charged, and the following step (3) is carried out; otherwise, the battery is not fully charged, and the following step (4) is carried out;
(3) the monitoring device instructs the PCS to stop charging and the contactor to open; then, the electric quantity of the energy storage battery is continuously monitored, when the electric quantity is larger than or equal to the target standby capacity, the monitoring device instructs the PCS to discharge, and when the electric quantity is smaller than the target standby capacity, the following step (4) is executed;
(4) the monitoring device instructs the PCS to charge or/and the contactor to close to cause the UPS to charge the battery, and step (2) is performed.
3. The charge and discharge control method according to claim 2, characterized in that: in the step (1), the monitoring device further sets a charging power threshold, and in the step (4), the charging power of the PCS and the charging power threshold are firstly judged; when the charging power of the PCS is larger than or equal to the charging power threshold value, the monitoring device instructs the PCS to charge, and then the step (2) is executed; when the charging power of the PCS is smaller than the charging power threshold value, the monitoring device instructs the contactor to be closed, and then the step (2) is executed.
4. The charge/discharge control method for connecting the energy storage battery to the UPS by using the connection method according to claim 1, wherein: the energy storage battery is connected with the inverter, the inverter and the contactor are controlled by the monitoring device, and the method comprises the following steps:
(1) the monitoring device sets a target standby power capacity, wherein the target standby point capacity is smaller than the total capacity of the energy storage battery;
(2) the electric quantity of the energy storage battery is monitored; when the electric quantity is equal to the total capacity of the energy storage battery, the battery is fully charged, and the following step (3) is carried out; otherwise, the battery is not fully charged, and the following step (4) is carried out;
(3) the monitoring device instructs the contactor to open; then, the electric quantity of the energy storage battery is continuously monitored, when the electric quantity is larger than or equal to the target standby capacity, the monitoring device instructs to start the inverter, the energy storage battery discharges to a load, and when the electric quantity is smaller than the target standby capacity, the following step (4) is executed;
(4) and (3) the monitoring device instructs the inverter to be closed, and simultaneously closes the contactor to enable the UPS to charge the battery, and the step (2) is executed.
5. The charge and discharge control method according to claim 2, 3 or 4, characterized by: and monitoring the electric quantity of the energy storage battery through a battery management system in the energy storage battery.
6. The charge and discharge control method according to claim 2, 3 or 4, characterized by: in the step (1), the target standby power capacity is 70% -90% of the total capacity of the energy storage battery.
7. The charge and discharge control method according to claim 2, 3 or 4, characterized by: in the step (3), the monitoring device sets the PCS or the inverter to discharge at fixed time and fixed quantity.
8. The charge and discharge control method according to claim 2 or 3, characterized by: in the step (4), the monitoring device sets the PCS to be charged regularly and quantitatively.
9. The charge and discharge control method according to claim 2 or 3, characterized by: in the step (3) and the step (4), the monitoring device sets the PCS to be charged and discharged in the peak-valley electricity time period.
10. The charge and discharge control method according to claim 4, characterized in that: in the step (3), the monitoring device sets the inverter to discharge in the peak-valley power period.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910824327.3A CN111181240B (en) | 2019-09-02 | 2019-09-02 | Connection method of energy storage battery and UPS and charge and discharge control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910824327.3A CN111181240B (en) | 2019-09-02 | 2019-09-02 | Connection method of energy storage battery and UPS and charge and discharge control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111181240A true CN111181240A (en) | 2020-05-19 |
| CN111181240B CN111181240B (en) | 2023-05-16 |
Family
ID=70657072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910824327.3A Active CN111181240B (en) | 2019-09-02 | 2019-09-02 | Connection method of energy storage battery and UPS and charge and discharge control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111181240B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI807405B (en) * | 2021-08-25 | 2023-07-01 | 台達電子工業股份有限公司 | Power conversion system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201830008U (en) * | 2010-09-02 | 2011-05-11 | 中山冠虹电子有限公司 | Realization device for preventing power frequency on-line Uninterruptible Power Supply (UPS) battery from leaking electricity |
| CN102412732A (en) * | 2010-04-03 | 2012-04-11 | 联正电子(深圳)有限公司 | Uninterrupted power supply device and control method thereof |
| KR101331183B1 (en) * | 2013-06-17 | 2013-11-20 | 주식회사 이온 | Uninterruptible power system for having energy storage system function |
| US20150270744A1 (en) * | 2012-10-11 | 2015-09-24 | Schneider Electric It Corporation | Circuit and method for providing an uninterruptible power supply |
| CN205986191U (en) * | 2016-08-25 | 2017-02-22 | 江西清华泰豪三波电机有限公司 | Incessant on -vehicle mains operated system of synthesizing of dual input dual output |
| CN107437847A (en) * | 2017-06-14 | 2017-12-05 | 浙江南都电源动力股份有限公司 | Energy storage for data center machine room construction is for electric service system |
| CN208127888U (en) * | 2018-03-20 | 2018-11-20 | 连储环保科技（上海）有限公司 | A kind of energy storage is for electrical integrated ups power system |
-
2019
- 2019-09-02 CN CN201910824327.3A patent/CN111181240B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102412732A (en) * | 2010-04-03 | 2012-04-11 | 联正电子(深圳)有限公司 | Uninterrupted power supply device and control method thereof |
| CN201830008U (en) * | 2010-09-02 | 2011-05-11 | 中山冠虹电子有限公司 | Realization device for preventing power frequency on-line Uninterruptible Power Supply (UPS) battery from leaking electricity |
| US20150270744A1 (en) * | 2012-10-11 | 2015-09-24 | Schneider Electric It Corporation | Circuit and method for providing an uninterruptible power supply |
| KR101331183B1 (en) * | 2013-06-17 | 2013-11-20 | 주식회사 이온 | Uninterruptible power system for having energy storage system function |
| CN205986191U (en) * | 2016-08-25 | 2017-02-22 | 江西清华泰豪三波电机有限公司 | Incessant on -vehicle mains operated system of synthesizing of dual input dual output |
| CN107437847A (en) * | 2017-06-14 | 2017-12-05 | 浙江南都电源动力股份有限公司 | Energy storage for data center machine room construction is for electric service system |
| CN208127888U (en) * | 2018-03-20 | 2018-11-20 | 连储环保科技（上海）有限公司 | A kind of energy storage is for electrical integrated ups power system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI807405B (en) * | 2021-08-25 | 2023-07-01 | 台達電子工業股份有限公司 | Power conversion system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111181240B (en) | 2023-05-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107219470B (en) | On-line checking discharge device and method for storage battery pack | |
| CN107144796B (en) | Feedback type storage battery pack nuclear capacity discharging device and application method | |
| CN103441562B (en) | High voltage direct current electric power system | |
| CN103490492B (en) | High voltage direct current electric power system | |
| CN111786455B (en) | Positive and negative lithium battery parallel operation system for UPS | |
| CN106787040A (en) | DC power system | |
| KR20150073505A (en) | Energy storage system and starting method the same | |
| CN104201762B (en) | A kind of electric power box becomes dedicated operations power supply | |
| CN112018870A (en) | Direct-current power supply backup storage battery pack discharging remote control system and method | |
| CN103645412A (en) | Battery detection method and device | |
| CN205791745U (en) | A kind of generator set storage battery charging system | |
| CN114421586A (en) | Data center power supply system, power supply control method and device and data center | |
| CN212380995U (en) | DC power supply backup storage battery pack discharging remote control system | |
| CN111181240B (en) | Connection method of energy storage battery and UPS and charge and discharge control method | |
| CN201515256U (en) | On-line storage battery replacement device | |
| CN111327107A (en) | Intelligent UPS power supply management system | |
| CN208369223U (en) | Backup battery energy storage discharge control system | |
| CN103872754B (en) | Photovoltaic solar method for controlling power supply and system | |
| CN104953614A (en) | Distributed power supply grid-connection control system | |
| CN113253124A (en) | Safe and energy-saving power storage battery nuclear capacity discharging device and method | |
| CN114123459A (en) | Fuel cell and battery backup power supply in power system | |
| CN103944179B (en) | Plumbous carbon battery is utilized to implement the electric power system of communication system peak load shifting | |
| CN201789310U (en) | Power direct current operating switching power supply | |
| CN206259735U (en) | DC power system | |
| CN101958568A (en) | Electric direct-current-operated switching power supply and storage battery pack management method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |