CN110571918A - Method for achieving power supply capacity expansion by using UPS - Google Patents
Method for achieving power supply capacity expansion by using UPS Download PDFInfo
- Publication number
- CN110571918A CN110571918A CN201910950172.8A CN201910950172A CN110571918A CN 110571918 A CN110571918 A CN 110571918A CN 201910950172 A CN201910950172 A CN 201910950172A CN 110571918 A CN110571918 A CN 110571918A
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- CN
- China
- Prior art keywords
- energy
- battery
- load
- rectifier
- power
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- 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.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
-
- 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
Abstract
The invention discloses a method for achieving power supply capacity expansion by using a UPS (uninterrupted power supply), which comprises a rectifier, an inverter and a battery, wherein the rectifier acquires energy from a mains supply end, converts alternating-current voltage of the mains supply into direct-current voltage, provides required energy for the inverter and charges the battery, and converts the energy of the rectifier and the battery into stable 220V alternating current for a user load by the inverter; the battery in the UPS host machine serves as an energy storage function, when the load current is lower than the power distribution capacity, the battery is charged to store energy, when the load exceeds the power distribution capacity, the battery discharges and supplies energy to the load together with commercial power, so that the rectification part of the UPS host machine is modified to adapt to the limitation of input power distribution, the UPS host machine can work under the conditions of small input power at the network side and large output power of the load, and the effect of power supply capacity expansion at the load side of a user is achieved.
Description
Technical Field
The invention relates to the technical field of circuits, in particular to a method for achieving power supply capacity expansion by using a UPS.
Background
In actual use, the power distribution of many users is designed and constructed many years ago, although a design margin is reserved initially, with the increase or upgrade of the power utilization equipment, the actual power utilization quantity may be already close to the maximum power distribution capacity designed and constructed at first, in this case, if the starting current of some equipment is larger than the running current, the situation that the equipment is started instantly, the current exceeds the maximum allowable power distribution current, and tripping occurs may occur, or some equipment is not started at ordinary times and works for half an hour or one hour as required, when the equipment is not started, the power distribution can meet the load current, but when the equipment is started to work, the current exceeds the power distribution capacity, the cable may be heated, and the like;
for the situations, capacity expansion needs to be performed on power distribution, and the conventional power distribution capacity expansion needs to redesign and construct the whole power distribution system, so that the transformation cost is very high; if some equipment is temporarily used additionally, the capacity expansion of power distribution is not economical and unrealistic, and a new solution is needed for the capacity expansion of power supply, so that the invention provides a method for realizing the capacity expansion of power supply by using a UPS to solve the problems in the prior art.
Disclosure of Invention
The invention provides a method for achieving power supply and capacity expansion by using a UPS (uninterrupted power supply), which has the advantages that a battery in a UPS host machine is used as an energy storage function, when the load current is lower than the power distribution capacity, the battery is charged and stored, when the load exceeds the power distribution capacity, the battery is discharged and provides energy for the load together with commercial power, so that a rectification part of the UPS host machine is reformed to adapt to the limitation of input power distribution, the UPS host machine can work under the conditions of small input power at a network side and large output power of the load, and the effect of power supply and capacity expansion at a user load side is achieved.
In order to solve the above problems, the present invention provides a UPS mainframe including a rectifier, an inverter and a battery, wherein the rectifier obtains energy from a utility power end, converts an ac voltage of the utility power into a dc voltage, the rectifier provides the inverter with required energy and charges the battery, and the inverter converts the energy of the rectifier and the battery into a stable 220V ac power for a user load.
The further improvement lies in that: in the process that the rectifier obtains energy from the commercial power end, default input power distribution is enough, the commercial power end normally provides current required by full power, and the rectifier obtains enough energy from the network side for use.
A method for achieving power supply capacity expansion by using a UPS comprises the following steps:
The method comprises the following steps: adding an 'input distribution current limit value' setting item in the UPS host, and inputting the limit value into the UPS host by an installation engineer according to the distribution condition of a use field when each machine is installed on the field;
Step two: in the using process, the control DSP in the UPS mainframe is used for controlling the maximum input current of the rectifier on the set value in the step one, if the energy required by the load does not reach the current limiting value of the rectifier, the energy of the load is provided by the commercial power, and meanwhile, the commercial power charges the battery;
Step three: if the energy required by the load exceeds the current limit value of the rectifier, the rectifier supplies energy to the load according to the set limit value, the rest part is supplied by discharging the battery, and the commercial power and the battery jointly supply power to the load.
the further improvement lies in that: in the second step, the battery is used as an energy storage function, and when the load current is lower than the distribution capacity, the battery is charged to store energy.
the further improvement lies in that: in the third step, when the load exceeds the power distribution capacity, the battery discharges and provides energy to the load together with the commercial power.
the invention has the beneficial effects that: the battery in the UPS host machine serves as an energy storage function, when the load current is lower than the power distribution capacity, the battery is charged to store energy, when the load exceeds the power distribution capacity, the battery discharges and supplies energy to the load together with commercial power, so that the rectification part of the UPS host machine is modified to adapt to the limitation of input power distribution, the UPS host machine can work under the conditions of small input power at the network side and large output power of the load, and the effect of power supply capacity expansion at the load side of a user is achieved.
Drawings
FIG. 1 is a circuit topology diagram of a UPS host of the present invention;
FIG. 2 is a schematic view of step two of the present invention;
FIG. 3 is a schematic diagram of the third step of the present invention.
Detailed Description
In order to further understand the present invention, the following detailed description will be made with reference to the following examples, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.
according to fig. 1, the present embodiment provides a UPS host, which includes a rectifier, an inverter and a battery, wherein the rectifier obtains energy from a utility power end, and converts an ac voltage of the utility power into a dc voltage, the rectifier provides the required energy to the inverter and charges the battery, and the inverter converts the energy of the rectifier and the battery into a stable 220V ac power for the user load.
In the process that the rectifier obtains energy from the commercial power end, default input power distribution is enough, the commercial power end normally provides current required by full power, and the rectifier obtains enough energy from the network side for use.
As shown in fig. 2 and 3, the present embodiment provides a method for achieving power expansion by using a UPS, including the following steps:
The method comprises the following steps: adding an 'input distribution current limit value' setting item in the UPS host, and inputting the limit value into the UPS host by an installation engineer according to the distribution condition of a use field when each machine is installed on the field;
step two: in the using process, the maximum input current of the rectifier is controlled on the set value in the step one by using a control DSP in the UPS mainframe, if the energy required by the load does not reach the current limiting value of the rectifier and the load current is lower than the power distribution capacity, the energy of the load is provided by the commercial power, and meanwhile, the commercial power charges the battery, so that the battery is used as an energy storage function, and when the battery is charged and stores energy, as shown in figure 2;
Step three: if the energy required by the load exceeds the current limit value of the rectifier and the load exceeds the power distribution capacity, the rectifier supplies energy to the load according to the set limit value, the rest part is supplied by discharging the battery, and the commercial power and the battery jointly supply power to the load, as shown in figure 3.
The method for achieving power supply capacity expansion by using the UPS has the advantages that the battery in the UPS host machine serves as an energy storage function, when load current is lower than power distribution capacity, the battery charges and stores energy, when load exceeds power distribution capacity, the battery discharges and supplies energy to the load together with commercial power, so that the rectification part of the UPS host machine is transformed, the UPS host machine is adaptive to limitation of input power distribution, the UPS host machine can work under the condition that input power of a network side is small and output power of the load is large, and the effect of power supply capacity expansion of a user load side is achieved.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. A UPS host computer which characterized in that: the rectifier obtains energy from a mains supply end, converts alternating-current voltage of the mains supply into direct-current voltage, provides required energy for the inverter and charges the battery, and the inverter converts the energy of the rectifier and the battery into stable 220V alternating-current power which is provided for a user load to use.
2. the UPS host of claim 1, wherein: in the process that the rectifier obtains energy from the commercial power end, default input power distribution is enough, the commercial power end normally provides current required by full power, and the rectifier obtains enough energy from the network side for use.
3. A method for achieving power supply capacity expansion by using a UPS is characterized in that: the method comprises the following steps:
The method comprises the following steps: adding an 'input distribution current limit value' setting item in the UPS host, and inputting the limit value into the UPS host by an installation engineer according to the distribution condition of a use field when each machine is installed on the field;
Step two: in the using process, the control DSP in the UPS mainframe is used for controlling the maximum input current of the rectifier on the set value in the step one, if the energy required by the load does not reach the current limiting value of the rectifier, the energy of the load is provided by the commercial power, and meanwhile, the commercial power charges the battery;
step three: if the energy required by the load exceeds the current limit value of the rectifier, the rectifier supplies energy to the load according to the set limit value, the rest part is supplied by discharging the battery, and the commercial power and the battery jointly supply power to the load.
4. The method of claim 3, wherein the method further comprises: in the second step, the battery is used as an energy storage function, and when the load current is lower than the distribution capacity, the battery is charged to store energy.
5. the method of claim 3, wherein the method further comprises: in the third step, when the load exceeds the power distribution capacity, the battery discharges and provides energy to the load together with the commercial power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910950172.8A CN110571918A (en) | 2019-10-08 | 2019-10-08 | Method for achieving power supply capacity expansion by using UPS |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910950172.8A CN110571918A (en) | 2019-10-08 | 2019-10-08 | Method for achieving power supply capacity expansion by using UPS |
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| CN110571918A true CN110571918A (en) | 2019-12-13 |
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| CN201910950172.8A Pending CN110571918A (en) | 2019-10-08 | 2019-10-08 | Method for achieving power supply capacity expansion by using UPS |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI804038B (en) * | 2021-11-03 | 2023-06-01 | 永續電子有限公司 | Power supply controlling system and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4709318A (en) * | 1986-10-22 | 1987-11-24 | Liebert Corporation | UPS apparatus with control protocols |
| CN109066962A (en) * | 2018-08-24 | 2018-12-21 | 佛山市众盈电子有限公司 | Off-line UPS power-supply system |
| CN109103983A (en) * | 2018-08-29 | 2018-12-28 | 微控物理储能研究开发（深圳）有限公司 | Using flywheel energy storage to the system and control method of converter plant uninterrupted power supply |
| CN109149609A (en) * | 2018-08-29 | 2019-01-04 | 微控物理储能研究开发（深圳）有限公司 | A kind of user side electric power dynamic compatibilization system and its control method |
| WO2019040338A1 (en) * | 2017-08-25 | 2019-02-28 | Saudi Arabian Oil Company | Distributed energy storage systems |
-
2019
- 2019-10-08 CN CN201910950172.8A patent/CN110571918A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4709318A (en) * | 1986-10-22 | 1987-11-24 | Liebert Corporation | UPS apparatus with control protocols |
| WO2019040338A1 (en) * | 2017-08-25 | 2019-02-28 | Saudi Arabian Oil Company | Distributed energy storage systems |
| CN109066962A (en) * | 2018-08-24 | 2018-12-21 | 佛山市众盈电子有限公司 | Off-line UPS power-supply system |
| CN109103983A (en) * | 2018-08-29 | 2018-12-28 | 微控物理储能研究开发（深圳）有限公司 | Using flywheel energy storage to the system and control method of converter plant uninterrupted power supply |
| CN109149609A (en) * | 2018-08-29 | 2019-01-04 | 微控物理储能研究开发（深圳）有限公司 | A kind of user side electric power dynamic compatibilization system and its control method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI804038B (en) * | 2021-11-03 | 2023-06-01 | 永續電子有限公司 | Power supply controlling system and method |
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Application publication date: 20191213 |
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